阅读说明：本技术 一种通信控制方法和通信设备 (Communication control method and communication equipment ) 是由 舒林 于 2021-08-09 设计创作，主要内容包括：本申请提供了一种通信控制方法和通信设备,该通信控制方法包括：第一网元接收来自能力降低终端设备的请求信息；第一网元基于阈值处理请求信息；第一网元向能力降低终端设备发送反馈信息,反馈信息用于指示第一网元对请求信息的处理结果,并且,该反馈信息包括原因值,这原因值是用于指示拒绝原因或者指示达到阈值。通过由第一网元对来自能力降低终端设备的请求信息进行处理并做出相应的反馈,本申请能够实现避免能力降低终端设备对网络资源的过度消耗,并使其满足其所适用的垂直行业场景的业务需求,从而能够提升通信效率和网络资源利用率。(The application provides a communication control method and a communication device, wherein the communication control method comprises the following steps: a first network element receives request information from a capability reduction terminal device; the first network element processes the request information based on the threshold value; the first network element sends feedback information to the capability reduction terminal equipment, wherein the feedback information is used for indicating the processing result of the first network element on the request information, and the feedback information comprises a reason value, and the reason value is used for indicating a rejection reason or indicating that a threshold value is reached. By processing the request information from the capability reduction terminal equipment and making corresponding feedback through the first network element, the method and the device can avoid excessive consumption of the capability reduction terminal equipment on network resources, and enable the capability reduction terminal equipment to meet the service requirements of the applicable vertical industry scene, thereby improving the communication efficiency and the network resource utilization rate.)

1. A communication control method, comprising:

a first network element receives request information from a capability reduction terminal device;

the first network element processes the request information based on a threshold value;

the first network element sends feedback information to the terminal equipment with reduced capability, the feedback information indicates the processing result of the first network element to the request information, the feedback information comprises a reason value, and the reason value indicates the rejection reason or indicates that the threshold value is reached.

2. The method of claim 1,

the request information is registration request information or service request information, the threshold is a maximum value of the number of the capability reduction terminal devices registered in the first location area,

wherein the registration request information includes indication information of capability reduction.

3. The method of claim 2,

when the number of the terminal devices with reduced capability registered in the first location area in the first network element reaches the threshold, the processing result is that the first network element rejects the request message, and the cause value indicates that the maximum number of terminal devices is reached.

4. A method according to claim 2 or 3, characterized in that the first location area comprises any of the following parameters:

the capability reduces a tracking area, a registration area of the terminal device and a service area of the first network element.

5. The method of claim 1,

the request message is uplink non-access stratum (NAS) transmission message or Packet Data Unit (PDU) session establishment request message, and the threshold is the maximum value of the PDU session number.

6. The method of claim 5,

the PDU session setup request information includes capability reduction indication information.

7. The method according to claim 5 or 6,

when the number of PDU sessions of the capability-reduced terminal device reaches the threshold, the processing result is that the first network element rejects the request information, and the cause value indicates that the maximum number of PDU sessions is reached.

8. The method of claim 1,

the request information is packet data unit, PDU, session modification request information, the threshold is a maximum of a quality of service flow, QoS, flow number, or,

the threshold is the maximum value of the QoS rate.

9. The method of claim 8,

when the QoS flow number of the capability-reducing terminal device reaches the threshold, the processing result is that the first network element rejects the request message, the cause value indicates that the maximum QoS flow number is reached, or,

and when the QoS flow quantity of the PDU session of the terminal equipment with reduced capability reaches the threshold value, the first network element rejects the request information as a processing result, and the reason value indicates that the maximum QoS flow quantity is reached.

10. The method of claim 8,

when the QoS flow number of the capability-reducing terminal device plus the QoS flow number requested to be established by the capability-reducing terminal device reaches the threshold, the processing result is that the first network element receives the request information, the cause value indicates that the maximum QoS flow number is reached, or,

when the QoS flow quantity of the PDU session of the capability-reduction terminal equipment plus the QoS flow quantity requested to be established by the capability-reduction terminal equipment reaches the threshold value, the first network element receives the request information as a processing result, and the reason value indicates that the maximum QoS flow quantity is reached.

11. The method of claim 8,

when the QoS flow number of the capability-reducing terminal device plus the QoS flow number requested to be established by the capability-reducing terminal device is greater than the threshold, the processing result is that the first network element rejects or accepts the request message, the cause value indicates that the maximum QoS flow number is reached, or,

when the QoS flow number of the PDU session of the capability-reducing terminal device plus the QoS flow number requested to be established by the capability-reducing terminal device is greater than the threshold, the processing result is that the first network element rejects or accepts the request information, and the cause value indicates that the maximum QoS flow number is reached.

12. The method according to claim 9 or 11,

the processing result is that the first network element rejects the request information, and the feedback information further includes a maximum value of the QoS flow number.

13. The method of claim 8,

when the QoS rate requested by the capability-reducing terminal equipment reaches the threshold, the processing result is that the first network element receives the request information, and the reason value indicates that the maximum QoS rate is reached.

14. The method of claim 8,

when the QoS rate requested by the capability-reducing terminal equipment is greater than the threshold, the processing result is that the first network element rejects or accepts the request information, and the reason value indicates that the QoS is not accepted or the maximum QoS rate is reached.

15. The method of claim 14,

the processing result is that the first network element rejects the request information, and the feedback information further includes a maximum value of the QoS rate.

16. The method according to claim 2 or 6,

and the first network element determines the terminal equipment as the terminal equipment with reduced capability according to the indication information of reduced capability.

17. The method according to any one of claims 1 to 16,

the first network element is a mobility management network element or a session management network element.

18. A communication control method, comprising:

the capacity reduction terminal equipment sends request information to a first network element;

the capability reduction terminal equipment receives feedback information of the first network element, wherein the feedback information indicates a processing result of the first network element on the request information, the feedback information comprises a reason value, and the reason value indicates a rejection reason or indicates that the threshold is reached;

and the capability reduction terminal equipment processes the feedback information according to the reason value.

19. The method of claim 18, wherein the request information is any one of the following:

registration request information, service request information, uplink non-access stratum, NAS, transport information, packet data unit, PDU, session establishment request information, and packet data unit, PDU, session modification request information,

wherein the registration request information or the PDU session setup request information includes capability reduction indication information.

20. The method of claim 19,

when the request information is the registration request information, the feedback information is registration rejection information, or,

when the request information is the service request information, the feedback information is service rejection information, or,

when the request message is the uplink NAS transport message, the feedback message is a downlink NAS transport message, or,

when the request information is the PDU session establishment request information, the feedback information is PDU session establishment rejection information, or,

when the request information is the PDU session modification request information, the feedback information is PDU session modification rejection information or PDU session modification command information,

wherein the PDU session modification rejection information further includes: a maximum of the number of quality of service flows QoS flow or a maximum of the quality of service QoS rate.

21. The method of claim 20,

the feedback information is registration rejection information, and the reason value is that the maximum number of terminal equipment is reached; alternatively, the first and second electrodes may be,

the feedback information is service rejection information, and the reason value is that the maximum number of terminal equipment is reached; alternatively, the first and second electrodes may be,

the feedback information is downlink NAS transmission information, and the reason value is that the maximum PDU session number is reached; alternatively, the first and second electrodes may be,

the feedback information is PDU conversation establishment rejection information, and the reason value is that the maximum PDU conversation quantity is reached; alternatively, the first and second electrodes may be,

the feedback information is PDU session modification rejection information, and the reason value is that the maximum QoS flow number is reached, or the maximum QoS rate is reached, or the QoS is not accepted.

22. The method of claim 21, wherein the processing the feedback information by the reduced capability terminal device according to the cause value comprises:

the reason value is that the maximum number of terminal devices is reached, and the terminal device with reduced capability does not send the registration request information to the first network element any more; alternatively, the first and second electrodes may be,

the reason value is that the maximum PDU session number is reached, and the terminal equipment with reduced capability does not send the PDU session establishment request information to the first network element any more; alternatively, the first and second electrodes may be,

the reason value is that the maximum QoS flow number is reached, the capability-reducing terminal equipment does not send the PDU session modification request information to the first network element any more, and the PDU session modification request information is used for establishing the QoS flow of the capability-reducing terminal equipment; alternatively, the first and second electrodes may be,

and if the reason value is that the maximum QoS rate is reached or the QoS is not accepted, the capability-reduction terminal device does not send the PDU session modification request information to the first network element any more, and the PDU session modification request information is used for requesting the QoS rate of the capability-reduction terminal device.

23. The method according to any one of claims 18 to 22,

the first network element is a mobility management network element or a session management network element.

24. A communication device, comprising at least one processor configured to execute a computer program stored in a memory to cause the communication device to perform the communication method of any one of claims 1 to 17.

25. A communication device comprising at least one processor configured to execute a computer program stored in a memory to cause the communication device to perform the communication method of any one of claims 18 to 23.

26. A computer storage medium storing instructions that, when executed on a computer, cause the computer to perform the communication method of any one of claims 1 to 17.

27. A computer storage medium storing instructions that, when executed on a computer, cause the computer to perform the communication method of any one of claims 18 to 23.

28. A computer program product, which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 17.

29. A computer program product, which, when run on a computer, causes the computer to perform the method of any one of claims 18 to 23.

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication control method and a communication device.

Background

The fifth generation (5th generation, 5G) network supports three typical application scenarios: enhanced mobile broadband (eMBB), mass machine-type communication (mtc), and ultra-reliable and low latency communication (URLLC). The eMBB is directed to a traditional user terminal, and the mtc and URLLC are directed to an internet of things (IoT) terminal facing a vertical industry.

Cellular internet of things (CIoT) is an internet of things that enables an internet of things terminal to access a mobile communication network through a narrowband internet of things (NB-IoT) access technology. At the initial stage of the 5G network, the internet of things terminal still accesses the 5G Core Network (CN) through the conventional NB-IoT air interface access technology, and the New Radio (NR) does not support the access of the internet of things terminal.

The third generation partnership project (3rd generation partnership project, 3GPP) has established a special standard project at the release17 (Rel-17) stage to analyze and optimize the functional characteristics of the existing 5G terminal and network to realize that the 5G internet of things terminal accesses to the 5G core network through the 5G NR. In this standard project, 3GPP proposes NR devices that support reduced capability (RedCap), i.e., RedCap terminals. Compared with the traditional eMBB/URLLC equipment, the capacity-reduced terminal equipment has the advantages of lower cost, low complexity, more compact size, sufficient performance and the like.

However, how to avoid the excessive consumption of network resources by the terminal device due to capability reduction and meet the service requirement of the applicable vertical industry scene is a technical problem to be solved urgently at present.

Disclosure of Invention

The application provides a communication control method and communication equipment, which can be used for avoiding excessive consumption of a terminal on network resources and meeting the service requirements of a vertical industry scene suitable for the terminal, thereby improving the communication efficiency and the utilization rate of the network resources.

In a first aspect, a communication control method is provided, including: a first network element receives request information from a capability reduction terminal device; the first network element processes the request information based on the threshold value; the first network element sends feedback information to the terminal equipment with reduced capability, the feedback information is used for indicating the processing result of the first network element to the request information, the feedback information comprises a reason value, and the reason value is used for indicating the rejection reason or indicating that the threshold value is reached.

By processing the request information from the capability reduction terminal equipment and making corresponding feedback through the first network element, the method and the device can avoid excessive consumption of the capability reduction terminal equipment on network resources, and enable the capability reduction terminal equipment to meet the service requirements of the applicable vertical industry scene, thereby improving the communication efficiency and the network resource utilization rate.

With reference to the first aspect, in certain implementations of the first aspect, the request information is registration request information or service request information, and the threshold is a maximum value of the number of capability reduction terminal devices registered in the first location area, where the registration request information includes capability reduction indication information.

By sending the indication information of capability reduction to the first network element by the UE in the registration process, the first network element controls the terminal equipment with capability reduction based on the maximum number of the terminal equipment and provides the UE with the rejection reason value.

With reference to the first aspect, in some implementations of the first aspect, when the number of terminal devices with reduced capability to register in the first network element in the first location area reaches the threshold, the processing result is that the first network element rejects the request message, and the cause value is used to indicate that the maximum number of terminal devices is reached.

With reference to the first aspect, in certain implementations of the first aspect, the first location area includes any one of the following parameters: the capability is reduced for the tracking area, the registration area of the terminal device and the service area of the first network element.

With reference to the first aspect, in some implementations of the first aspect, the request message is an uplink non-access stratum NAS transport message or a packet data unit, PDU, session establishment request message, and the threshold is a maximum value of a number of PDU sessions.

The first network element controls the capability reduction terminal equipment based on the maximum PDU session number and provides the reason value for the UE, so that the excessive consumption of the capability reduction terminal equipment on network resources can be avoided, the service requirement of a typical vertical industry scene applicable to the capability reduction terminal equipment is met, and the communication efficiency and the network resource utilization rate can be improved.

With reference to the first aspect, in some implementations of the first aspect, the PDU session setup request information includes capability reduction indication information.

With reference to the first aspect, in some implementations of the first aspect, when the number of PDU sessions of the capability-reduced terminal device reaches the threshold, the processing result is that the first network element rejects the request information, and the reason value is used to indicate that the maximum number of PDU sessions is reached.

With reference to the first aspect, in some implementations of the first aspect, the request information is packet data unit, PDU, session modification request information, and the threshold is a maximum of a number of quality of service flows, QoS, flow, or the threshold is a maximum of a QoS rate.

By processing PDU session modification request information of the UE by the first network element based on the maximum QoS flow quantity or the maximum QoS rate value and providing a cause value for the UE, the method and the device can avoid excessive consumption of network resources by the capability reduction terminal device, meet the service requirement of a typical vertical industry scene applicable to the capability reduction terminal device, and further improve the communication efficiency and the network resource utilization rate.

With reference to the first aspect, in some implementations of the first aspect, when the QoS flow number of the capability-reduction terminal device reaches the threshold, the processing result is that the first network element rejects the request information, and the cause value is used to indicate that the maximum QoS flow number is reached, or, when the QoS flow number of the PDU session of the capability-reduction terminal device reaches the threshold, the processing result is that the first network element rejects the request information, and the cause value is used to indicate that the maximum QoS flow number is reached.

With reference to the first aspect, in some implementations of the first aspect, when the QoS flow number of the capability-reduction terminal device plus the QoS flow number requested to be established by the capability-reduction terminal device reaches a threshold, the processing result is that the first network element receives the request information, and the reason value is used to indicate that the maximum QoS flow number is reached, or when the QoS flow number of the PDU session of the capability-reduction terminal device plus the QoS flow number requested to be established by the capability-reduction terminal device reaches a threshold, the processing result is that the first network element receives the request information, and the reason value is used to indicate that the maximum QoS flow number is reached.

With reference to the first aspect, in some implementations of the first aspect, when the QoS flow number of the capability-reduction terminal device plus the QoS flow number requested to be established by the capability-reduction terminal device is greater than a threshold, the processing result is that the first network element rejects or accepts the request message, and the cause value is used to indicate that the maximum QoS flow number is reached, or, when the QoS flow number of the PDU session of the capability-reduction terminal device plus the QoS flow number requested to be established by the capability-reduction terminal device is greater than the threshold, the processing result is that the first network element rejects or accepts the request message, and the cause value is used to indicate that the maximum QoS flow number is reached.

With reference to the first aspect, in some implementations of the first aspect, the processing result is that the first network element rejects the request information, and the feedback information further includes a maximum value of the QoS flow number.

With reference to the first aspect, in some implementations of the first aspect, when the QoS rate requested by the capability reduction terminal device reaches the threshold, the processing result is that the first network element accepts the request information, and the cause value indicates that the maximum QoS rate is reached.

With reference to the first aspect, in some implementations of the first aspect, when the QoS rate requested by the capability reduction terminal device is greater than the threshold, the processing result is that the first network element rejects or accepts the request message, and the cause value is used to indicate that the QoS is not accepted or the maximum QoS rate is reached.

With reference to the first aspect, in certain implementations of the first aspect, the processing result is that the first network element rejects the request information, and the feedback information further includes a maximum value of the QoS rate.

With reference to the first aspect, in some implementations of the first aspect, the first network element determines, according to the indication information of capability reduction, that the terminal device is a capability-reduced terminal device.

With reference to the first aspect, in some implementations of the first aspect, the first network element is a mobility management network element or a session management function network element.

In a second aspect, a communication control method is provided, including: the capacity reduction terminal equipment sends request information to a first network element; the method comprises the steps that the capability reduction terminal equipment receives feedback information of a first network element, wherein the feedback information is used for indicating a processing result of the first network element to request information, the feedback information comprises a reason value, and the reason value is used for indicating a rejection reason or indicating that a threshold value is reached; the capability-reduction terminal device processes the feedback information according to the cause value.

With reference to the second aspect, in some implementations of the second aspect, the request information is any one of the following information: the network element comprises registration request information, service request information, uplink non-access stratum (NAS) transmission information, Packet Data Unit (PDU) session establishment request information and Packet Data Unit (PDU) session modification request information, wherein the registration request information or the PDU session establishment request information comprises capability reduction indication information.

With reference to the second aspect, in some implementations of the second aspect, when the request information is registration request information, the feedback information is registration rejection information, or when the request information is service request information, the feedback information is service rejection information, or when the request information is uplink NAS transport information, the feedback information is downlink NAS transport information, or when the request information is PDU session establishment request information, the feedback information is PDU session establishment rejection information, or when the request information is PDU session modification request information, the feedback information is PDU session modification rejection information, or PDU session modification command information, where the PDU session modification rejection information further includes: a maximum of the number of quality of service flows QoS flow or a maximum of the quality of service QoS rate.

With reference to the second aspect, in some implementations of the second aspect, the feedback information is registration rejection information, and the cause value is that the maximum number of terminal devices is reached; or the feedback information is service rejection information, and the reason value is that the maximum terminal equipment number is reached; or the feedback information is downlink NAS transmission information, and the reason value is that the maximum PDU session number is reached; or the feedback information is PDU conversation establishment rejection information, and the reason value is that the maximum PDU conversation quantity is reached; alternatively, the feedback information is PDU session modification reject information, the reason value is that the maximum QoS flow number is reached, or the maximum QoS rate is reached, or the QoS is not accepted.

With reference to the second aspect, in some implementations of the second aspect, the processing, by the capability-reduction terminal device, the feedback information according to a cause value includes: the reason value is that the maximum number of the terminal equipment is reached, and the terminal equipment with reduced capability does not send the registration request information to the first network element any more; or, the reason value is that the maximum PDU session number is reached, the capability reduction terminal equipment does not send PDU session establishment request information to the first network element any more; or, the reason value is that the maximum QoS flow number is reached, the capability-reducing terminal device does not send the PDU session modification request information to the first network element any more, and the PDU session modification request information is used for establishing the QoS flow of the capability-reducing terminal device; or, the reason value is that the maximum QoS rate is reached or the QoS is not accepted, the capability-reduction terminal device does not send PDU session modification request information to the first network element any more, and the PDU session modification request information is used for requesting the QoS rate of the capability-reduction terminal device.

With reference to the second aspect, in some implementations of the second aspect, the first network element is a mobility management network element or a session management function network element.

In a third aspect, a communication control method is provided, including: a first network element receives control plane user data from the capability reduction terminal equipment; the first network element processes control plane user data based on a threshold, wherein the threshold is the maximum value of the control plane user data; the first network element sends feedback information to the capability reduction terminal equipment, wherein the feedback information is used for indicating the processing result of the first network element on the control plane user data, the feedback information comprises a reason value, and the reason value is used for indicating a rejection reason.

With reference to the third aspect, in some implementations of the third aspect, the processing results in the first network element rejecting control plane user data, the cause value being indicative of reaching or being greater than a threshold.

With reference to the third aspect, in some implementations of the third aspect, the first network element is a mobility management network element or a session management function network element.

In a fourth aspect, a communication control method is provided, including: the capacity reduction terminal equipment sends control plane user data to the first network element; the capability reduction terminal equipment receives feedback information from the first network element, wherein the feedback information is used for indicating the processing result of the first network element on the control plane user data, the feedback information comprises a reason value, and the reason value is used for indicating a rejection reason; and the capability reduction terminal equipment processes the feedback information according to the reason value.

With reference to the fourth aspect, in some implementations of the fourth aspect, the processing results in the first network element rejecting control plane user data, the cause value being indicative of reaching or being greater than a threshold.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first network element is a mobility management network element or a session management function network element.

In a fifth aspect, a communication control method is provided, including: the user plane functional network element receives user plane user data from the capability reduction terminal equipment; the user plane functional network element processes user plane user data based on a threshold value, wherein the threshold value is the maximum value of the size of the user plane user data; and the user plane function network element sends Packet Forwarding Control Protocol (PFCP) session report request information to the session management function network element, wherein the PFCP session report request information is used for indicating that the threshold is reached or is greater than the threshold.

In a sixth aspect, a communication control method is provided, including: a session management function network element receives Packet Forwarding Control Protocol (PFCP) session report request information from a user plane function network element, wherein the PFCP session report request information is used for indicating that a threshold value is reached or greater, and the threshold value is the maximum value of user plane user data; a session management function network element releases a Packet Data Unit (PDU) session corresponding to user data of a user plane; and the session management function network element sends PDU release command information to the terminal equipment with reduced capability, wherein the PDU release command information is used for indicating the release of the PDU session.

In a seventh aspect, a communication control method is provided, including: the capacity reduction terminal equipment sends user plane user data to a user plane functional network element; the capability reduction terminal equipment receives PDU release command information from a session management function network element, wherein the PDU release command information is used for indicating the release of PDU session; and the capability reduction terminal equipment processes user plane user data according to the PDU release command information.

In an eighth aspect, there is provided a communication device comprising: a transceiving unit for receiving request information from the capability-reduced terminal device; a processing unit for processing the request information based on a threshold value; and the transceiving unit is further configured to send feedback information to the capability reduction terminal device, where the feedback information is a processing result of the first network element for indicating the request information, and the feedback information includes a cause value, and the cause value is used for indicating a reject cause or indicating that the threshold is reached.

With reference to the eighth aspect, in some implementations of the eighth aspect, the request information is registration request information or service request information, and the threshold is a maximum value of the number of capability reduction terminal devices registered in the first location area, wherein the registration request information includes capability reduction indication information.

With reference to the eighth aspect, in some implementations of the eighth aspect, when the number of terminal devices with reduced capability to register with the first network element in the first location area reaches the threshold, the processing result is that the first network element rejects the request message, and the cause value is used to indicate that the maximum number of terminal devices is reached.

With reference to the eighth aspect, in certain implementations of the eighth aspect, the first location area includes any one of the following parameters: the capability is reduced for the tracking area, the registration area of the terminal device and the service area of the first network element.

With reference to the eighth aspect, in some implementations of the eighth aspect, the request message is an uplink non-access stratum NAS transport message or a packet data unit, PDU, session establishment request message, and the threshold is a maximum value of a PDU session number.

With reference to the eighth aspect, in some implementations of the eighth aspect, the PDU session setup request information includes capability reduction indication information.

With reference to the eighth aspect, in some implementations of the eighth aspect, when the number of PDU sessions of the capability-reduced terminal device reaches the threshold, the processing result is that the first network element rejects the request information, and the reason value is used to indicate that the maximum number of PDU sessions is reached.

With reference to the eighth aspect, in certain implementations of the eighth aspect, the request information is packet data unit, PDU, session modification request information, and the threshold is a maximum of a quality of service flow, QoS, flow number, or the threshold is a maximum of a QoS rate.

With reference to the eighth aspect, in some implementations of the eighth aspect, when the QoS flow number of the capability-reduction terminal device reaches the threshold, the processing result is that the first network element rejects the request information, and the cause value is used to indicate that the maximum QoS flow number is reached, or, when the QoS flow number of the PDU session of the capability-reduction terminal device reaches the threshold, the processing result is that the first network element rejects the request information, and the cause value is used to indicate that the maximum QoS flow number is reached.

With reference to the eighth aspect, in some implementations of the eighth aspect, when the QoS flow number of the capability-reduction terminal device plus the QoS flow number requested to be established by the capability-reduction terminal device reaches the threshold, the processing result is that the first network element receives the request information, and the cause value is used to indicate that the maximum QoS flow number is reached, or when the QoS flow number of the PDU session of the capability-reduction terminal device plus the QoS flow number requested to be established by the capability-reduction terminal device reaches the threshold, the processing result is that the first network element receives the request information, and the cause value is used to indicate that the maximum QoS flow number is reached.

With reference to the eighth aspect, in some implementations of the eighth aspect, when the QoS flow number of the capability-reduction terminal device plus the QoS flow number requested to be established by the capability-reduction terminal device is greater than the threshold, the processing result is that the first network element rejects or accepts the request message, and the cause value is used to indicate that the maximum QoS flow number is reached, or, when the QoS flow number of the PDU session of the capability-reduction terminal device plus the QoS flow number requested to be established by the capability-reduction terminal device is greater than the threshold, the processing result is that the first network element rejects or accepts the request message, and the cause value is used to indicate that the maximum QoS flow number is reached.

With reference to the eighth aspect, in some implementations of the eighth aspect, the processing result is that the first network element rejects the request information, and the feedback information further includes a maximum value of the QoS flow number.

With reference to the eighth aspect, in some implementations of the eighth aspect, when the QoS rate requested by the capability reduction terminal device reaches the threshold, the processing result is that the first network element accepts the request information, and the cause value indicates that the maximum QoS rate is reached.

With reference to the eighth aspect, in some implementations of the eighth aspect, when the QoS rate requested by the capability reduction terminal device is greater than the threshold, the processing result is that the first network element rejects or accepts the request message, and the cause value is used to indicate that the QoS is not accepted or the maximum QoS rate is reached.

With reference to the eighth aspect, in some implementations of the eighth aspect, the processing result is that the first network element rejects the request information, and the feedback information further includes a maximum value of the QoS rate.

With reference to the eighth aspect, in some implementations of the eighth aspect, the first network element determines that the terminal device is a capability reduction terminal device according to the capability reduction indication information.

With reference to the eighth aspect, in some implementations of the eighth aspect, the first network element is a mobility management network element or a session management function network element.

In a ninth aspect, there is provided a communication device comprising: a receiving and sending unit, configured to send request information to a first network element; the receiving and sending unit is further configured to receive feedback information of the first network element, where the feedback information is a processing result for indicating the first network element to request information, the feedback information includes a reason value, and the reason value is used for indicating a reject reason or indicating that a threshold is reached; and the processing unit is used for processing the feedback information according to the reason value.

With reference to the ninth aspect, in some implementations of the ninth aspect, the request information is any one of: the network element comprises registration request information, service request information, uplink non-access stratum (NAS) transmission information, Packet Data Unit (PDU) session establishment request information and Packet Data Unit (PDU) session modification request information, wherein the registration request information or the PDU session establishment request information comprises capability reduction indication information.

With reference to the ninth aspect, in some implementations of the ninth aspect, when the request information is registration request information, the feedback information is registration rejection information, or when the request information is service request information, the feedback information is service rejection information, or when the request information is uplink NAS transport information, the feedback information is downlink NAS transport information, or when the request information is PDU session establishment request information, the feedback information is PDU session establishment rejection information, or when the request information is PDU session modification request information, the feedback information is PDU session modification rejection information, or PDU session modification command information, where the PDU session modification rejection information further includes: a maximum of the number of quality of service flows QoS flow or a maximum of the quality of service QoS rate.

With reference to the ninth aspect, in some implementations of the ninth aspect, the feedback information is registration rejection information, and the cause value is that the maximum number of terminal devices is reached; or the feedback information is service rejection information, and the reason value is that the maximum terminal equipment number is reached; or the feedback information is downlink NAS transmission information, and the reason value is that the maximum PDU session number is reached; or the feedback information is PDU conversation establishment rejection information, and the reason value is that the maximum PDU conversation quantity is reached; alternatively, the feedback information is PDU session modification reject information, the reason value is that the maximum QoS flow number is reached, or the maximum QoS rate is reached, or the QoS is not accepted.

With reference to the ninth aspect, in some implementations of the ninth aspect, the cause value is that the maximum number of terminal devices is reached, and the transceiver unit is further configured to no longer send the registration request information to the first network element; or, the reason value is that the maximum PDU session number is reached, the receiving and sending unit is also used for not sending the PDU session establishment request information to the first network element any more; or, the reason value is that the maximum QoS flow number is reached, the transceiver unit is further configured to not send the PDU session modification request information to the first network element any more, and the PDU session modification request information is used to establish QoS flow of the capability-reduced terminal device; or, the reason value is that the maximum QoS rate is reached or the QoS is not accepted, the transceiver unit is further configured to not send PDU session modification request information to the first network element any more, where the PDU session modification request information is used to request the QoS rate of the capability reduction terminal device.

With reference to the ninth aspect, in some implementations of the ninth aspect, the first network element is a mobility management network element or a session management function network element.

In a tenth aspect, there is provided a communication apparatus comprising: a receiving and sending unit, configured to receive control plane user data from the capability reduction terminal device; a processing unit for processing the control plane user data based on a threshold, the threshold being a maximum value of the control plane user data; and the transceiving unit is further configured to send feedback information to the capability reduction terminal device, where the feedback information is a processing result indicating the first network element to the control plane user data, and the feedback information includes a cause value, and the cause value is used to indicate a reject cause.

With reference to the tenth aspect, in some implementations of the tenth aspect, the processing results in the first network element rejecting control plane user data, the cause value being indicative of reaching or being greater than a threshold.

With reference to the tenth aspect, in some implementations of the tenth aspect, the first network element is a mobility management network element or a session management function network element.

In an eleventh aspect, there is provided a communication device comprising: a receiving unit, configured to send control plane user data to a first network element; the receiving unit is further configured to accept feedback information from the first network element, where the feedback information is a processing result indicating that the first network element processes control plane user data, and the feedback information includes a cause value, and the cause value is used to indicate a reject cause; and the processing unit is used for processing the feedback information according to the reason value.

With reference to the eleventh aspect, in some implementations of the eleventh aspect, the processing results in the first network element rejecting the control plane user data, the cause value being indicative of reaching or being greater than the threshold.

With reference to the eleventh aspect, in certain implementations of the eleventh aspect, the first network element is a mobility management network element or a session management function network element.

In a twelfth aspect, there is provided a communication device comprising: a receiving and sending unit, which is used for receiving user plane user data from the capability reduction terminal equipment; a processing unit for processing the user plane user data based on a threshold value, the threshold value being a maximum value of a size of the user plane user data; the receiving and sending unit is further configured to send Packet Forwarding Control Protocol (PFCP) session report request information to the session management function network element, where the PFCP session report request information is used to indicate that a threshold is reached or exceeded.

In a thirteenth aspect, there is provided a communication device comprising: a receiving and sending unit, configured to receive Packet Forwarding Control Protocol (PFCP) session report request information from a user plane function network element, where the PFCP session report request information is used to indicate that a threshold value is reached or greater, and the threshold value is a maximum value of user data of a user plane; the processing unit is used for releasing a Packet Data Unit (PDU) session corresponding to user data of a user plane; and the transceiving unit is further used for sending PDU release command information to the terminal equipment with reduced capability, wherein the PDU release command information is used for indicating the release of the PDU session.

In a fourteenth aspect, a communication device is provided, comprising: a receiving and sending unit, configured to send user plane user data to a user plane functional network element; a receiving and sending unit, configured to receive PDU release command information from a session management function network element, where the PDU release command information is used to indicate that a PDU session is released; and the processing unit is used for processing the user plane user data according to the PDU release command information.

A fifteenth aspect provides a computer storage medium storing instructions that, when executed on a computer, cause the computer to perform a communication control method as described in the first aspect and any one of the possible implementations of the first aspect, or the third aspect and any one of the possible implementations of the fourth aspect, or the fifth aspect and any one of the possible implementations of the fifth aspect, or the sixth aspect.

A sixteenth aspect provides a computer storage medium storing instructions that, when executed on a computer, cause the computer to perform a communication control method as set forth in the second aspect and any one of the possible implementations of the second aspect, or the seventh aspect and any one of the possible implementations of the seventh aspect.

A seventeenth aspect provides a computer program product which, when run on a computer, causes the computer to perform the communication control method as described in the first aspect and any one of the possible implementations of the first aspect, or the communication control method as described in the third aspect and any one of the possible implementations of the third aspect, or the communication control method as described in the fourth aspect and any one of the possible implementations of the fourth aspect, or the communication control method as described in the fifth aspect and any one of the possible implementations of the fifth aspect, or the communication control method as described in any one of the possible implementations of the sixth aspect.

Eighteenth aspect provides a computer program product which, when run on a computer, causes the computer to execute a communication control method as described in the second aspect and any one of the possible implementations of the second aspect, or as described in the seventh aspect and any one of the possible implementations of the seventh aspect.

Drawings

Fig. 1 is a schematic architecture diagram of a 5G system provided in the present application.

Fig. 2 is a schematic flow chart of a communication control method provided in the present application.

Fig. 3 is a schematic flow chart of another communication control method provided in the present application.

Fig. 4 is a schematic flow chart of another communication control method provided in the present application.

Fig. 5 is a block diagram of a communication device provided in the present application.

Fig. 6 is a block diagram of a further communication device provided in the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a global system for mobile communications (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a long term evolution (long term evolution, LTE) system, a LTE Frequency Division Duplex (FDD) system, a LTE Time Division Duplex (TDD) system, a universal mobile telecommunications system (universal mobile telecommunications system, UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a 5G network or NR, or a future communication network such as a sixth generation (6 th generation) communication network^thgeneration, 6G) networks, and the like.

A terminal device in the embodiments of the present application may be referred to as an access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless network device, user agent, or user equipment. The terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capability, a computing device or other device connected to a wireless modem, a vehicle-mounted device, a wearable device or internet of things, a terminal device in a vehicle network, a home gateway (CPE), any form of terminal device in a future network, and so on. For convenience of description, in the embodiments of the present application, a User Equipment (UE) is used to refer to a terminal device.

The network device in this embodiment may be a device for communicating with a terminal device, where the network device may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, an evolved node b (eNB or eNodeB) in an LTE system, a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or a relay station, an access point, a vehicle-mounted device, a wearable device, and a network device in a 5G network or a future communication network.

Fig. 1 shows a schematic diagram of a 5G system architecture provided in the present application. Specifically, as shown in fig. 1, an application scenario to which the communication method of the present application may be applied may include a UE101, a Radio Access Network (RAN) device 102, a User Plane Function (UPF) network element 103, an access and mobility management function (AMF) 104, a Session Management Function (SMF) network element 105, and a Policy Control Function (PCF) network element 106, an Application Function (AF) network element 107, a network slice selection authentication and authorization function (nsaaf) network element 108, a Unified Data Management (UDM) network element 109, an authentication authorization service function (AUSF) network element 110, a Network Slice Selection Function (NSSF) network element 111, and a Data Network (DN) 112.

It should be understood that one example of a RAN device is a Base Station (BS).

A base station, which may also be referred to as a base station device, is a device that accesses a terminal device to a wireless network, including but not limited to: a Transmission Reception Point (TRP), a 5G node B (gnb), an evolved node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved node B, or home node B), an HNB base unit (BBU), or a Wifi Access Point (AP), or a small cell base equipment (pico), etc.

It should be understood that the present application is not limited to a particular type of base station. In systems using different radio access technologies, the names of devices that function as base stations may differ. For convenience of description, the above-mentioned apparatuses for providing a terminal device with a wireless communication function are collectively referred to as a base station in this application.

UPF: it can be understood as the naming of the user plane functional network elements in the 5G architecture. The user plane functional network element mainly comprises the following functions: user plane related functions such as data packet routing and transmission, packet detection, service quantity reporting, quality of service (QoS) processing, legal monitoring, uplink packet detection, downlink data packet storage and the like.

AMF: it can be understood as the naming of the mobility management network element in the 5G architecture. The mobility management network element mainly comprises the following functions: connection management, mobility management, registration management, access authentication and authorization, reachability management, security context management, and other access and mobility related functions.

SMF: it can be understood as the naming of the session management network element in the 5G architecture. The session management network element mainly performs functions of session management, execution of control strategies issued by PCF, selection of UPF, allocation of UE IP addresses and the like.

PCF: it can be understood as the naming of the policy control function network element in the 5G architecture. The policy control function network element is mainly responsible for performing policy control functions such as charging, QoS bandwidth guarantee, mobility management, UE policy decision and the like aiming at the session and the service flow level. In the system, PCFs connected to the AMF and the SMF are an access and mobility control PCF (AM PCF) and an SM PCF, respectively, and the AM PCF and the SM PCF may not be the same PCF entity in actual deployment.

UDM: it can be understood as the naming of the unified data management network element in the 5G architecture. The unified data management network element mainly comprises the following functions: unified data management, support authentication credential processing in 3GPP authentication and key agreement mechanisms, user identity processing, access authorization, registration and mobility management, subscription management, short message management and the like.

AUSF: it can be understood as the name of the authentication authorization service function network element in the 5G architecture. The authentication authorization service functional network element is responsible for authenticating and authorizing the access of the terminal equipment.

DN: a data network for identifying an operator network access point name. In this application, the DN may also include authentication, authorization, and accounting (AAA) server functions, which are responsible for performing secondary authentication on the user.

AF: it can be understood as the naming of the application function network element in the 5G architecture. The application function network element mainly transfers requirements of an application side on a network side, such as quality of service (QoS) requirements and the like. The AF network element may be a third-party functional entity, or may be an application service deployed by an operator, such as an IP Multimedia Subsystem (IMS) voice call service.

NSSAAF: it can be understood that the authentication and authorization functions chosen for network slices are named in the 5G architecture. The authentication and authorization function of network slice selection is mainly used for authenticating and authorizing the network slice service requested by the terminal equipment.

It is to be understood that the above network elements or functions may be network elements in a hardware device, or may be software functions running on dedicated hardware, or virtualization functions instantiated on a platform (e.g., a cloud platform). Optionally, the network element or the function may be implemented by one device, or may be implemented by multiple devices together, or may be a functional module in one device, which is not specifically limited in this embodiment of the present application.

Wherein, each interface function is described as follows:

n1: the interface between the AMF and the UE, access independence, is used to deliver QoS control rules to the UE, etc.

N2: and the interface between the AMF and the RAN is used for transmitting radio bearer control information from the core network side to the RAN and the like.

N3: an interface between the RAN and the UPF for transferring user plane data between the RAN and the UPF.

N4: the interface between the SMF and the UPF is used for transmitting information between the control plane and the user plane, and comprises the control of issuing of forwarding rules, QoS control rules, flow statistic rules and the like facing the user plane and the information reporting of the user plane.

N5: and the interface between the AF and the PCF is used for issuing the application service request and reporting the network event.

N6: and the interface between the UPF and the DN is used for transmitting the user plane data between the UPF and the DN.

N7: the interface between the PCF and the SMF is used to send a Protocol Data Unit (PDU) session granularity and a service data stream granularity control policy.

N8: and the interface between the AMF and the UDM is used for acquiring the subscription data and the authentication data related to access and mobility management from the UDM by the AMF, registering the current mobility management related information of the UE from the UDM by the AMF and the like.

N9: the interface between the UPFs, such as the interface between a visited-policy control function (V-PCF) and a home-policy control function (H-PCF), or the interface between the UPF connected to the DN and the UPF connected to the RAN, is used to transfer user plane data between the UPFs.

N10: and the interface between the SMF and the UDM is used for acquiring the subscription data related to the session management from the SMF to the UDM, registering the related information of the current session of the UE from the SMF to the UDM, and the like.

N11: and the interface between the SMF and the AMF is used for transmitting PDU session tunnel information between the RAN and the UPF, transmitting control information sent to the UE, transmitting radio resource control information sent to the RAN and the like.

N12: and the interface between the AMF and the AUSF is used for carrying out identity authentication on the terminal equipment.

N13: and the interface between the UDM and the AUSF is used for transmitting the authentication parameters and transmitting the authentication result.

N14: an interface between the two AMFs for passing user context to support movement across the AMFs.

N15: and the interface between the PCF and the AMF is used for issuing the UE strategy and the access control related strategy.

N22: and the interface between the AMF and the NSSF is used for slice selection and acquisition of slice information allowed by the terminal.

N33: and the interface between the NEF and the AF is used for acquiring the capability opening information from the mobile network by the third-party application and providing the application information to the mobile network.

N58: an interface between the AMF and the NSSAAF for performing authentication and authorization of network slice selection.

N59: an interface between the NSSAAF and the UDM for obtaining user subscription information for authentication and authorization for network slice selection.

It should be noted that the name of each network element included in fig. 1 is only a name, and the name does not limit the function of the network element itself. In the 5G network and other networks in the future, the network elements may also be given other names, which is not specifically limited in the embodiment of the present application. For example, in a 6G network, some or all of the above network elements may use the terminology in 5G, or may use other nomenclature, and so on, which are described herein in a unified manner and will not be described again below.

It should be understood that the present application is not limited to the system architecture shown in fig. 1. For example, more or fewer network elements or devices may be included in a communication system to which the communication method of the present application may be applied. The devices or network elements in fig. 1 may be hardware, or may be functionally divided software, or a combination of the two. The devices or network elements in fig. 1 may communicate with each other through other devices or network elements.

It should be noted that, in the embodiment of the present application, the capability reduction terminal apparatus is equivalent to a red map UE, and for convenience of description, the embodiment of the present application uses the capability reduction terminal apparatus to describe the technical solution of the embodiment of the present application.

It should be understood that the requirement of the capability reduction terminal device for the network is between the traditional NB-IoT/eMTC terminal and the eMBB/URLLC terminal, and the main application scenarios facing the capability reduction terminal device include:

1. industrial wireless sensor network: the demand is diversified; no mobility or low speed mobility; supporting relay transmission; low power consumption; low cost and low complexity.

2. Video monitoring in smart cities: the uplink transmission is mainly carried out, and the uplink bandwidth is large; real-time online for 24 hours; no mobility; there is no power saving requirement.

3. Wearable smart device of individual: voice and service continuity are supported; supporting relay transmission; low power consumption; low cost and low complexity.

Based on the application scenario, compared with the traditional eMB/URLLC terminal, the capability reduction terminal device has the advantages of lower device complexity, lower cost, more compact size and enough performance. Meanwhile, the 5G network needs to identify the accessed terminal device as a capability-reduced terminal device, i.e., a terminal device supporting the RedCap capability. In order to avoid the excessive consumption of network resources by the terminal equipment due to capacity reduction, the 5G network needs to perform access control on the network resources, optimize the resource utilization of the 5G network, and meet the service requirements of the applicable vertical industry scene, so that the communication efficiency and the network resource utilization rate can be improved.

The access control factor for the network resources of the NB-IoT terminal includes the number of PDU sessions (sessions) activated by the maximum User Plane (UP). The access control factor for the network resources of the eMBB terminal has the maximum number of connections for a PDU session.

However, for the capability-reduction terminal device, based on the service requirements of the applicable industrial wireless sensor network and video monitoring in the smart city and the requirements of the operator for network resource optimization, the above scheme cannot help to solve the problem that the 5G network excessively consumes the network resources for the capability-reduction terminal device, and make the capability-reduction terminal device meet the service requirements of the applicable vertical industrial scene, so as to improve the communication efficiency and the network resource utilization rate.

In view of the above technical problems, the present application provides a communication control method and a communication device, which can help avoid excessive consumption of network resources by a red map terminal device, and enable the red map terminal device to meet the service requirements of a vertical industry scenario to which the red map terminal device is applied, so as to improve communication efficiency and network resource utilization rate.

Fig. 2 shows a schematic flow chart of a communication control method #200 provided by the present application. The details are shown in fig. 2. It should be understood that the execution subject of the method #200 shown in fig. 2 is the network element # a and the UE, i.e. the capability-reduction terminal device.

S210, the UE sends request information.

Correspondingly, network element # a receives the request information from the UE.

It should be understood that, in the embodiment of the present application, the request information may be registration request information, service request information, packet data unit PDU session establishment request information, PDU session modification request information, and Non Access Stratum (NAS) transmission information, and the like.

S220, the network element # a processes the request information based on the threshold value.

It should be understood that the threshold corresponds to the request information sent by the capability reduction terminal device, that is, the correspondence relationship may be understood as: if the request information is registration request information, the threshold is the maximum terminal equipment number of the terminal equipment with reduced registration capability of the network element # A in a certain position area; if the request message is a service request message, the threshold is also the maximum number of terminal devices of which the capability registered in the network element # A in a certain location area is reduced; if the request message is uplink NAS transmission message or PDU session establishment request message, the threshold value is the maximum value of the number of PDU sessions of the capability reduction terminal equipment; if the request message is a PDU session modification request message, the threshold is a maximum value of the number of QoS flows (flows) of the capability-reduced terminal device or a maximum value of the QoS rate of the capability-reduced terminal device, which will be described in detail later.

It should be understood that the network element # a processes the request information based on a threshold value corresponding to the request information and determines a corresponding processing result.

S230, the network element # a sends the feedback information.

It should be understood that, the network element # a sends the feedback information to the UE, so that the UE can know the processing result of the network element # a on the request information, and the UE can determine the corresponding action or behavior based on the processing result.

It should be understood that after the network element # a processes the request information based on the threshold, a corresponding processing result is determined, and the processing result includes: accept the request message or reject the request message.

It should be noted that the feedback information sent by the network element # a to the UE includes a cause value (cause value), where the cause value is used to indicate a reject cause or to indicate that a threshold is reached.

And S240, the UE processes the feedback information according to the reason value.

Illustratively, if the feedback information sent by the network element # a to the UE indicates that the network element # a rejects the request information and indicates a reject reason through the carried reason value, the UE may process the feedback information based on the reason value, for example, no longer sends the request information to the network element # a.

As a possible implementation, the network element # a determines that the UE is a reduced capability terminal device by the indication information of reduced capability included in the request information.

By processing the request information sent by the UE and determining the corresponding feedback information through the network element # A, the method and the device can realize the control of the network on the capacity reduction terminal equipment, and further avoid the excessive consumption of the capacity reduction terminal equipment on network resources, so that the network resource can meet the service requirement of the applicable vertical industry scene, and the communication efficiency and the network resource utilization rate can be improved.

The technical solution of the method #200 will be further described below with reference to specific types of request information.

First, the request message is a registration request message, and network element # a is an AMF network element.

S210# a, the UE transmits registration request (registration request) information for requesting the UE to register to the network.

It should be appreciated that the registration request information includes indication information of reduced capability, based on which the AMF network element determines that the UE is a reduced capability device.

S220# a, the AMF network element processes the registration request information based on the maximum terminal device number of the terminal device reduced by the capability registered in the first location area.

The AMF network element determines that the UE is a reduced capability terminal device based on the indication information of reduced capability included in the registration request information and stores it in the context of the UE.

It is to be understood that the AMF network element checks whether the number of capability reduction terminal devices already registered in the first location area reaches a maximum number of terminal devices. If not, the AMF network element completes the registration process; and if so, the AMF network element rejects the registration request information of the UE.

The first location area may include:

1) tracking Area (TA) where the UE is currently located.

2) A registration area (registration area) where the UE is currently located, where the registration area includes a TA where the UE is currently located and a plurality of surrounding TAs, and forms a TA list.

3) The entire service area (service area) of the AMF network element.

S230# a, the AMF network element sends registration reject (registration reject) information to the UE, the registration reject information including a cause value indicating that a maximum number of UEs reached.

When determining to reject the registration request information of the UE, the AMF network element sends registration rejection information to the UE, and carries a cause value in the registration rejection information, which is used to indicate a reject cause.

S240# A, the UE enters a de-registration state according to the registration rejection information and the reason value.

After knowing that the AMF network element rejects the registration request information of the UE, the UE selects not to send the registration request information to the AMF network element any more based on the registration rejection information and the cause value, and enters a deregistration state.

By sending the indication information of capability reduction to the AMF network element by the UE in the registration process, the AMF network element controls the capability reduction terminal equipment based on the maximum terminal equipment number and provides the rejection reason value for the UE.

Second, the request message is a service request message and network element # a is an AMF network element.

S210# B, the UE sends service request (service request) information, where the service request information is used to request the network to provide a service, such as establishing an air interface user plane resource.

After the UE successfully registers to the network, the UE sends service request information to the AMF network element, that is, requests the network to provide a certain service or service, for example, establish an air interface user plane resource.

It should be understood that after the UE successfully registers to the network, the UE does not need to carry the capability reduction indication information in the service request information, and the AMF network element can determine that the UE is the capability reduction terminal device based on the capability reduction indication information carried by the UE in the previous registration request information.

And S220# B, the AMF network element reduces the maximum terminal equipment number of the terminal equipment based on the registered capacity in the first location area to process the service request information.

The AMF network element checks whether the number of capability reduction terminal devices already registered in the first location area reaches a maximum number of terminal devices. If not, the AMF network element continues to provide the service requested by the UE for the UE; and if so, the AMF network element rejects the service request information of the UE, namely rejects to provide the service requested by the UE for the UE.

For the content of the first location area, reference may be made to the foregoing content, which is not described herein again.

S230# B, the AMF network element sends service reject (service reject) information to the UE, the service reject information including a cause value indicating that a maximum number of terminal devices (UEs) reached.

When determining to reject the service request information of the UE, the AMF network element sends service rejection information to the UE, and carries a cause value in the service rejection information, where the cause value is used to indicate a reject cause.

S240# B, the UE enters a registration-removing state according to the service refusal information and the reason value.

It should be understood that, after the UE knows that the AMF network element rejects the service request information of the UE, it will not send the service request information to the AMF network element any more based on the service rejection information and the cause value, and enter a deregistration state.

As a possible implementation, the AMF network element checks whether the number of the registered capability reduction terminal devices in the first location area has reached the maximum number of terminal devices, and determines whether de-registration request (de-registration request) information needs to be sent to the UE based on the check result. If the number of the terminal equipment reaches the maximum number, the AMF network element sends registration request information to the UE, the registration request information comprises a reason value, the reason value is used for indicating that the maximum number of the terminal equipment is reached, and after the UE receives the registration request information, the UE does not send the registration request information to the AMF network element any more based on the registration request information and the reason value and enters a registration removing state.

By sending the indication information of capability reduction to the AMF network element by the UE in the registration process, the AMF network element controls the capability reduction terminal equipment based on the maximum terminal equipment number and provides the rejection reason value for the UE.

Third, the request message is an uplink NAS transport message, and network element # a is an AMF network element.

S210# C, the UE sends uplink NAS transmission information to the AMF network element, and the uplink NAS transmission information comprises PDU session establishment request information.

Specifically, the UE initiates PDU session establishment request information based on a request of an upper layer application, the PDU session establishment request information is encapsulated in the uplink NAS transport information and sent to the AMF network element, and the PDU session establishment request information is used for requesting establishment of a new PDU session.

And S220# C, the AMF network element processes the uplink NAS transmission information and the PDU session establishment request information based on the maximum PDU session number.

Specifically, the AMF network element checks whether the number of active PDU sessions of the UE reaches the maximum number of PDU sessions. If not, the AMF network element executes a PDU session establishment flow and forwards PDU session establishment request information to the SMF network element; and if so, the AMF network element does not forward the PDU session establishment request information to the SMF network element.

S230# C, the AMF network element sends downlink NAS transport information to the UE, where the downlink NAS transport information includes the PDU session establishment request information received in S210# C.

When the AMF network element determines that the number of the activated PDU sessions of the UE reaches the maximum number of the PDU sessions, the AMF network element sends downlink NAS transmission information to the UE, the PDU session establishment request information received from the UE is included in the downlink NAS transmission information and sent back to the UE, and the downlink NAS transmission information carries a reason value which is used for indicating a rejection reason, namely the reason of sending back the PDU session establishment request information.

It should be understood that the downlink NAS transport information described above includes a cause value indicating that the maximum PDU session number of PDU sessions accessed is reached.

And S240# C, the UE does not send the PDU session establishment request information according to the downlink NAS transmission information and the reason value.

It should be understood that after the UE knows that the AMF network element sends back the PDU session establishment request message of the UE, it will not send the PDU session establishment request message based on the downlink NAS transport information and the cause value.

It should be noted that, the AMF network element determines, through the indication information of capability reduction carried by the UE in the previous registration procedure, that the UE is the terminal device with reduced capability.

The AMF network element controls the capability reduction terminal equipment based on the maximum PDU session number and provides a reason value for the UE, so that the excessive consumption of the capability reduction terminal equipment on network resources can be avoided, the service requirement of a typical vertical industry scene applicable to the capability reduction terminal equipment is met, and the communication efficiency and the network resource utilization rate can be improved.

Fourth, the request message is a PDU session setup request message, and network element # a is an SMF network element.

S210# D, the UE sends PDU session establishment request information to the SMF network element.

Specifically, the UE initiates PDU session establishment request information based on a request of an upper layer application, the PDU session establishment request information is encapsulated in uplink NAS transport information and sent to the AMF network element, the AMF network element encapsulates the received PDU session establishment request information in PDU session creation context request information and sends the PDU session establishment request information to the SMF network element, and the PDU session establishment request information is used for requesting establishment of a new PDU session.

And S220# D, the SMF network element processes the PDU session establishment request information based on the maximum PDU session number.

Specifically, the SMF network element checks whether the active PDU session number of the UE reaches the maximum PDU session number. If not, the SMF network element receives PDU session establishment request information; if yes, the SMF network element rejects the PDU session establishment request information and sends the PDU session rejection information to the UE.

S230# D, the SMF network element sends PDU session setup reject information to the UE.

When determining to reject the PDU session establishment request information of the UE, the SMF network element sends PDU session establishment rejection information to the UE, and the rejection information carries a reason value which is used for indicating a rejection reason.

The SMF network element encapsulates PDU session establishment rejection information in N1 transmission information and sends the transmission information to the AMF network element, and the AMF network element encapsulates the PDU session establishment rejection information in downlink NAS transmission information and forwards the downlink NAS transmission information to the UE.

It should be understood that the above-mentioned PDU session setup reject information includes a cause value indicating that the maximum PDU session number of PDU sessions (accessed) is reached.

And S240# D, the UE does not send PDU session establishment request information to the SMF network element any more according to the PDU session establishment rejection information and the reason value.

It should be understood that, after the UE knows that the SMF network element rejects the PDU session establishment request information of the UE, it will not send the PDU session establishment request information to the SMF network element any more based on the PDU session establishment rejection information and the cause value.

It should be understood that, the SMF network element determines that the UE is the capability-reduced terminal device from the AMF network element, for example, when a first PDU session is newly established, or in a location update registration procedure triggered by movement across AMF network elements (inter-AMF), the AMF network element sends the obtained indication information that the UE supports the reccap capability to the SMF network element, or the SMF network element obtains the indication information that the UE supports the reccap capability and directly reports the indication information through PDU session establishment request information from the UE.

The capacity reduction terminal equipment is controlled by the SMF network element based on the maximum PDU session number, and the reason value is provided for the UE, so that the capacity reduction terminal equipment can be prevented from excessively consuming network resources, the service requirement of a typical vertical industry scene applicable to the capacity reduction terminal equipment is met, and the communication efficiency and the network resource utilization rate can be improved.

Fifthly, the request message is a PDU session modification request message for requesting to establish at least one QoS flow, and the network element # a is an SMF network element.

S210# E, the UE sends PDU conversation modification request information to the SMF network element.

Specifically, the UE initiates PDU session modification request information based on a request of an upper layer application, which is used to request to newly establish at least one QoS flow, wherein the PDU session modification request information includes the newly established at least one QoS flow information. And the PDU session modification request information is encapsulated in the uplink NAS transmission information and is sent to the AMF network element. And the AMF network element encapsulates the received PDU session modification request information in the PDU session context update request information and sends the PDU session context update request information to the SMF network element.

S220# E, the SMF network element processes the PDU conversation modification request information based on the maximum QoS flow quantity.

It should be understood that the SMF network element has two processing modes for the PDU session modification request information of the UE based on the maximum QoS flow number:

the first method is as follows: the quantity of the QoS flow established by the terminal equipment with reduced capability at the SMF network element reaches the maximum QoS flow quantity, or the quantity of the QoS flow established by the terminal equipment with reduced capability at the SMF network element does not reach the maximum QoS flow quantity, but the quantity of the QoS flow newly requested exceeds the maximum QoS flow quantity, and the SMF network element rejects the PDU session modification request information of the UE.

The second method comprises the following steps: the quantity of the QoS flow established by the terminal equipment at the SMF network element is reduced to not reach the maximum QoS flow quantity, but the newly requested QoS flow quantity reaches or exceeds the maximum QoS flow quantity, the SMF network element receives all or part of the requested QoS flow, and the SMF network element receives PDU session modification request information of the UE.

S230# E, the SMF network element sends PDU conversation modification rejection information or PDU conversation modification command information to the UE.

According to different processing modes, feedback information sent by the SMF network element to the UE has two forms:

form # 1: the SMF network element rejects the PDU session modification information of the UE, and the SMF network element rejects the PDU session modification information

And encapsulating the PDU session modification rejection message in N1 transmission information and sending the message to the AMF network element, wherein the PDU session modification rejection message comprises a cause value which indicates that the maximum QoS flow number of the UE (maximum number of QoS flow accessed per UE) is reached or the maximum QoS flow number of the PDU session (maximum number of QoS flow accessed per PDU session) is reached. And the AMF network element encapsulates the received PDU session modification rejection information in the downlink NAS transmission information and forwards the downlink NAS transmission information to the UE.

Form # 2: the SMF network element receives the PDU session modification information, the SMF network element encapsulates PDU session modification command (PDU session modification command) information in N1 transmission information and sends the PDU session modification command information to the AMF network element, and the PDU session modification command information comprises a cause value which indicates that the maximum QoS flow number of the UE (maximum number of QoS flow accessed UE) is reached or the maximum QoS flow number of the PDU session is reached. And the AMF network element encapsulates the received PDU session modification command information in the downlink NAS transmission information and forwards the downlink NAS transmission information to the UE.

As a possible implementation manner, the SMF network element may carry the UE maximum QoS flow number or the PDU session maximum QoS flow number or the maximum QoS flow number in the PDU session modification rejection information or the PDU session modification command information.

It should be understood that in the above scenario, the SMF network element is based on the threshold of processing, i.e. the maximum QoS flow number corresponds to two processing granularities, one processing granularity is based on the UE level to judge whether the limit of the maximum QoS flow number is reached, i.e. the maximum QoS flow number that can be established by one UE, and the corresponding cause value indicates that the maximum QoS flow number of the UE is reached (maximum number of QoS flow reacquired UE). The other processing granularity is to determine whether the maximum QoS flow number is reached based on a PDU session level of the UE, that is, the maximum QoS flow number that can be included in a PDU session of the UE, and the corresponding cause value indicates that the maximum QoS flow number of the PDU session (maximum number of QoS flow accessed per PDU session) is reached.

As a possible implementation manner, for two processing granularities, the SMF network element uniformly provides the same cause value, which is used to indicate that the maximum QoS flow number (maximum number of QoS flow reached) is reached, and the UE understands the received cause value as reaching the UE maximum QoS flow number or reaching the PDU session maximum QoS flow number according to the policy agreed with the network.

S240# E, the UE does not send PDU session modification request information to the SMF network element any more.

And the UE determines not to send PDU session establishment request information to the AMF network element any more based on the cause value included in the PDU session modification rejection information or the PDU session modification command information, so that the UE does not request to establish a new QoS flow any more.

It should be noted that, the SMF network element determines, from the AMF network element, that the UE is the terminal device with reduced capability, for example, when a first PDU session is newly established or in a location update registration process triggered by inter-AMF mobility, the AMF sends the obtained indication information that the UE supports the rectap capability to the SMF network element, or the SMF network element obtains the indication information that the UE supports the rectap capability and directly reports the indication information from the UE through the PDU session establishment request information.

By processing PDU session modification request information of the UE by the SMF network element based on the maximum QoS flow quantity and providing a cause value for the UE, the method and the device can avoid excessive consumption of network resources by the capacity reduction terminal equipment, meet the service requirement of a typical vertical industry scene applicable to the capacity reduction terminal equipment, and further improve the communication efficiency and the network resource utilization rate.

Sixth, the request message is a PDU session modify request message for requesting to modify the QoS rate of the at least one QoS flow, and the network element # a is an SMF network element.

S210# F, the UE sends PDU conversation modification request information to the SMF network element.

Specifically, the UE initiates a PDU session modification request information request to modify the QoS rate of at least one QoS flow based on a request of an upper layer application. And the PDU session modification request information is encapsulated in the uplink NAS transmission information and is sent to the AMF network element. And the AMF network element encapsulates the received PDU session modification request information in the PDU session context update request information and sends the PDU session context update request information to the SMF network element.

S220# F, the SMF network element processes the PDU session modification request information based on the maximum QoS rate.

The SMF network element checks if the QoS rate requested by the UE exceeds the maximum QoS rate limit of the network for the reduced capability terminal device. If the QoS rate requested by the UE exceeds the maximum QoS rate of the network to the capability reduction terminal equipment, and the SMF network element rejects the QoS rate request of the UE, the SMF network element rejects the PDU session modification request of the UE, or if the QoS rate requested by the UE reaches or exceeds the maximum QoS rate of the network to the capability reduction terminal equipment, but the SMF network element decides to allocate the maximum QoS rate to the UE, the SMF network element accepts the PDU session modification request of the UE.

S230# F, the SMF network element sends PDU session modification reject information or PDU session modification command information to the UE.

It should be understood that, according to different processing manners, the feedback information sent by the SMF network element to the UE has two forms:

form # 3: if the SMF network element rejects the PDU session modification information of the UE, the SMF network element encapsulates the PDU session modification rejection information in an N1 transmission message and sends the message to the AMF network element, and the message includes a cause value indicating that the maximum QoS rate is reached (maximum rate of QoS flows accessed) or indicating that the QoS is not accepted (QoS not accessed). And the AMF network element encapsulates the received PDU session modification rejection information in the downlink NAS transmission information and forwards the downlink NAS transmission information to the UE.

Form # 4: if the SMF network element accepts the PDU session modification information of the UE, the SMF network element encapsulates a PDU session modification command (PDU session modification command) information in N1 transmission information and sends the information to the AMF network element, and the information includes a cause value indicating that a maximum QoS rate of QoS flows accessed is reached or that QoS is not accepted (QoS not accepted). And the AMF network element encapsulates the received PDU session modification command information in the downlink NAS transmission information and forwards the downlink NAS transmission information to the UE.

As a possible implementation manner, the SMF network element may carry the maximum QoS rate in the PDU session modification rejection information or the PDU session modification command information.

S240# F, the UE does not send PDU session modification request information to the SMF network element any more.

It should be understood that, based on the feedback information sent by the SMF network element and the cause value, the UE no longer requests the SMF network element for a rate greater than the maximum QoS rate delivered by the network.

It should be understood that, the SMF network element determines that the UE is the capability-reduced terminal device from the AMF network element, for example, when a first PDU session is newly established, or in a location update registration procedure triggered by movement across AMF network elements (inter-AMF), the AMF network element sends the obtained indication information that the UE supports the reccap capability to the SMF network element, or the SMF network element obtains the indication information that the UE supports the reccap capability and directly reports the indication information from the UE through the PDU session establishment request information.

By processing the PDU session modification request information of the UE based on the maximum QoS rate by the SMF network element and providing the reason value for the UE, the method and the device can avoid the excessive consumption of the capability reduction terminal equipment to the network resource, meet the service requirement of the capability reduction terminal equipment in a typical vertical industry scene, and further improve the communication efficiency and the utilization rate of the network resource.

Fig. 3 shows a schematic flow chart of a communication control method #300 provided by the present application. The details are shown in fig. 3. It should be understood that the execution subject of the method #300 shown in fig. 3 is the network element # a and the UE, i.e. the capability-reduction terminal device.

S310, the UE sends the control plane user data to the network element # A.

Specifically, the UE needs to transmit uplink Control Plane (CP) user data based on a request of an upper layer application. If the UE is in an idle state, the UE encapsulates CP user data in a container (e.g., a small data container (small data container) or a payload container (payload container)) of control plane service request (control plane service request) information; alternatively, if the UE is in the connected state, the UE encapsulates the CP user data in a container (e.g., payload container) of the uplink NAS transport information.

Correspondingly, network element # a receives CP user data from the UE.

The network element # a processes the CP user data based on the threshold S320.

In particular, network element # a checks whether the received CP user data size exceeds the maximum user data size limit of the network for the reduced capability terminal device. If the CP user data size sent by the UE exceeds the maximum user data size limit of the network to the capability-reduced terminal device, then:

a) if the network element # A receives the CP service request information, the network element # A rejects the CP service request information and discards the received CP user data;

b) if the network element # A receives the uplink NAS transmission information, the network element # A sends the CP user data back to the UE;

c) if the network element # a directly receives the CP user data, the network element # a discards the received CP user data.

S330, the network element # a sends feedback information to the UE, the feedback information including a cause value indicating a reject cause or indicating that a threshold is reached.

Specifically, if the network element # a receives the CP service request information, the network element # a sends service rejection information to the UE, and carries a cause value: up to a maximum user data size (maximum user data size) or up to a maximum information size (maximum message size) size; or, if the network element # a receives the uplink NAS transport information, the network element # a encapsulates the CP user data in the downlink NAS transport information and sends the encapsulated CP user data back to the UE, and the downlink NAS transport information carries a cause value: up to a maximum user data size (maximum user data size) or up to a maximum information size (maximum message size) size; or, if the network element # a directly receives the CP user data, the network element # a sends PDU session release command information to the UE, releases the PDU session associated with the CP user data, and carries a cause value in the PDU session release command information: up to a maximum user data size (maximum user data size) or up to a maximum information size (maximum message size) size.

Optionally, network element # a provides the maximum user data size value to the UE in the feedback information.

And S340, the UE processes the feedback information according to the reason value.

It should be understood that the UE determines that CP user data exceeding the maximum user data size is no longer to be transmitted to the network element # a based on the cause value included in the feedback information, and may limit the size of CP user data to be subsequently transmitted to the network element # a based on the cause value or the maximum user data size value.

By executing control over the capability reduction terminal equipment based on the maximum CP (content provider) user data size by the network element # A and providing the reason value for the UE, the method and the device can avoid excessive consumption of the capability reduction terminal equipment on network resources, meet the service requirement of a typical vertical industry scene applicable to the capability reduction terminal equipment, and further improve the communication efficiency and the network resource utilization rate.

The method #300 shown in fig. 3 will be further described below for the case where the network element # a is an SMF network element or an AMF network element.

First, network element # a is an AMF network element.

S310# A, the UE sends CP-plane user data to the AMF network element.

It should be understood that the foregoing may be referred to for a specific sending process, and details are not repeated herein.

And S320# A, the AMF network element processes the CP-plane user data based on the maximum user data size.

In particular, the AMF network element checks whether the received CP user data size exceeds the maximum user data size limit of the network for the reduced capability terminal device. If the CP user data size sent by the UE exceeds the maximum user data size limit of the network to the capability-reduced terminal device, then:

a) if the AMF network element receives the CP service request information, the AMF network element rejects the CP service request information and discards the received CP user data;

b) and if the AMF network element receives the uplink NAS transmission information, the AMF network element sends the CP user data back to the UE.

S330# A, the AMF network element sends feedback information to the UE.

Specifically, if the AMF network element receives the CP service request message, the AMF network element sends a service rejection message to the UE, and carries a cause value: up to a maximum user data size (maximum user data size) or up to a maximum information size (maximum message size) size; or, if the AMF network element receives the uplink NAS transport message, the network element # a encapsulates the CP user data in the downlink NAS transport message and sends the encapsulated CP user data back to the UE, and the downlink NAS transport message carries a cause value: up to a maximum user data size (maximum user data size) or up to a maximum information size (maximum message size) size.

Optionally, the AMF network element provides the maximum user data size value to the UE in the service rejection information or the downlink NAS transport information.

And S340# A, the UE processes the feedback information according to the reason value.

It should be understood that the UE determines that CP user data exceeding the maximum user data size is no longer to be sent to the AMF network element based on the cause value included in the service rejection information or the downlink NAS transport information, and may limit the size of CP user data to be subsequently sent to the AMF network element based on the cause value or the maximum user data size value.

It should be noted that, the AMF network element learns or determines that the UE is the terminal device with reduced capability based on the indication information of reduced capability carried by the UE in the first registration process.

By executing control over the capacity reduction terminal equipment by the AMF network element based on the maximum CP (content addressable memory) plane user data size and providing the reason value for the UE, the method and the device can avoid excessive consumption of the capacity reduction terminal equipment on network resources, meet the service requirement of a typical vertical industry scene applicable to the capacity reduction terminal equipment, and further improve the communication efficiency and the network resource utilization rate.

Second, network element # a is an SMF network element.

And S310# B, the UE sends the CP-plane user data to the SMF network element.

It should be understood that the UE needs to transmit uplink CP user data based on a request of an upper layer application. For example, if the UE is in idle state, the UE encapsulates the CP user data in a container (e.g., a small data container or a payload container) of the CP service request message and sends the CP user data to the AMF; if the UE is in the connected state, the UE encapsulates the CP user data in a container (e.g., payload container) of the uplink NAS transport information and sends the CP user data to the AMF.

And the AMF network element forwards the received CP user data to the SMF network element.

And S320# B, the SMF network element processes the CP-plane user data based on the maximum user data size.

In particular, the SMF network element checks whether the received CP user data size of the UE exceeds the maximum user data size limit of the network for the reduced capability terminal device. If the size of the CP user data sent by the UE exceeds the maximum user data size limit of the network to the capability reduction terminal equipment, the SMF network element discards the received CP user data and releases the corresponding CP PDU session.

S330# B, the SMF network element sends feedback information to the UE.

Specifically, the SMF network element encapsulates the PDU session release command information in the N1 transport information and sends the transmission information to the AMF network element, and the PDU session release command information carries a cause value: up to a maximum user data size (maximum user data size) or up to a maximum information size (maximum message size) is reached. And the AMF network element encapsulates the received PDU session release command information in the downlink NAS transmission information and forwards the downlink NAS transmission information to the UE.

Optionally, the SMF network element provides the maximum user data size value to the UE in the PDU session release command information.

And S340# B, the UE processes the feedback information according to the reason value.

It should be understood that the UE determines that CP user data exceeding the maximum user data size is no longer to be transmitted to the SMF network element based on the cause value included in the PDU session release command information, and may limit the size of CP user data subsequently transmitted to the SMF network element based on the cause value or the maximum user data size value.

It should be understood that the SMF network element determines that the UE is a capability-reduced terminal device from the AMF network element, for example, when a first PDU session is newly established, or in a location update registration process triggered by movement across AMF network elements (inter-AMF), the AMF network element sends the obtained indication information that the UE supports the reccap capability to the SMF network element; or the indication information that the SMF network element acquires the capability that the UE supports the RedCap is directly reported from the UE through PDU session establishment request information.

By executing control over the capacity reduction terminal equipment by the SMF network element based on the maximum CP (content protection function) plane user data size and providing the reason value for the UE, the capacity reduction terminal equipment can avoid excessive consumption of network resources, the service requirement of a typical vertical industry scene applicable to the capacity reduction terminal equipment is met, and therefore the communication efficiency and the network resource utilization rate can be improved.

Fig. 4 shows a schematic flow chart of a communication control method #400 provided by the present application. The details are shown in fig. 4. It should be understood that the execution subjects of the method #400 shown in fig. 4 are a UPF network element, an SMF network element, and a UE, i.e., a capability-reduction terminal device.

S410, the UE sends user plane user data to the UPF network element.

Correspondingly, the UPF network element receives User Plane (UP) user data from the UE.

Specifically, the UE sends UP user data to the UPF network element based on a request of an upper layer application.

S420, the UPF network element processes UP user data based on the maximum user data size.

In particular, the UPF network element checks whether the received UP user data size exceeds the maximum user data size limit of the network for the reduced capability terminal device. And if the size of the user data sent by the UE exceeds the maximum user data size limit of the network to the capability reduction terminal equipment, discarding the received user data by the UPF network element, and reporting the information reaching the maximum user data size to the SMF network element.

S430, the UPF network element sends the packet forwarding control protocol session report request information to the SMF network element.

It should be understood that, if the UPF network element determines that the UP data size of the UE reaches the limit based on the maximum user data size, the UPF network element sends Packet Forwarding Control Protocol (PFCP) session report request (session report request) information to the SMF network element, and the request information carries: the maximum user data size limit indication is reached.

S440, the SMF network element releases the PDU session corresponding to the UP user data.

It should be understood that the SMF network element decides to release the PDU session corresponding to the UP user data based on the indication information reported by the UPF network element that the maximum user data size limit is reached.

S450, the SMF network element sends PDU release command information to the UE.

Specifically, the SMF network element initiates a PDU session release procedure, that is, sends PDU session release command information to the UE. The SMF network element encapsulates the PDU session release command information in the N1 transmission information and sends the PDU session release command information to the AMF network element. And the AMF network element encapsulates the received PDU session release command information in the downlink NAS transmission information and forwards the downlink NAS transmission information to the UE. The PDU conversation release command information carries a reason value: up to a maximum user data size (maximum user data size) or up to a maximum information size (maximum message size) size.

Optionally, the SMF network element provides the maximum user data size value to the UE in the PDU session release command information.

S460, the UE processes the UP user data based on the cause value.

It should be understood that the UE will re-establish the PDU session as needed based on the cause value carried in the feedback information and send UP user data to the UPF network element according to the maximum user data size value provided by the network.

It should be understood that, the UPF network element learns or determines that the UE is the capability-reduction terminal device from the SMF network element, and reference may be made to the foregoing description for a manner that the SMF network element learns that the UE is the capability-reduction terminal device, which is not described herein again.

By controlling the UE based on the maximum UP-plane user data size through the UPF network element and the SMF network element and providing the reason value for the UE, the method and the device can avoid the excessive consumption of the network resources by the capacity reduction terminal equipment, meet the service requirement of the typical vertical industry scene suitable for the capacity reduction terminal equipment, and further improve the communication efficiency and the network resource utilization rate.

The communication device in the present application will be described below with reference to the drawings.

Fig. 5 is a schematic block diagram of a communication device 500 provided herein. As shown, the communication device 500 may include: a transceiving unit 510 and a processing unit 520.

In a possible design, the communication device 500 may be the UE in the above method embodiment, or may be a chip for implementing the function of the UE in the above method embodiment.

It should be understood that the communication device 500 may correspond to a UE in the method embodiments of the present application, and that the communication device 500 may include means for performing the methods performed by the UE in the method embodiments described above.

It should be understood that the units in the communication device 500 and the other operations and/or functions described above are respectively for implementing the corresponding flows in fig. 2 to 4.

It should be understood that the specific processes of the units for executing the corresponding steps are already described in detail in the above method embodiments, and therefore, for brevity, detailed descriptions thereof are omitted.

It should be understood that the above is only an exemplary understanding, and the communication device 500 can also implement other UE-related steps, actions or methods in the above method embodiments, which are not described herein again.

In another possible design, the communication device 500 may be a network device in the above method embodiment, for example, an AMF network element, an SMF network element, a UPF network element, and the like, and may also be a chip for implementing the functions of the network device in the above method embodiment.

It should be understood that the communication device 500 may correspond to a network device in the method embodiments of the present application, and that the communication device 500 may include means for performing the method performed by the network device in the method embodiments described above.

It should be understood that the specific processes of the units for executing the corresponding steps are already described in detail in the above method embodiments, and therefore, for brevity, detailed descriptions thereof are omitted.

It should be understood that the specific processes of the units for executing the corresponding steps are already described in detail in the above method embodiments, and therefore, for brevity, detailed descriptions thereof are omitted.

It is also to be understood that the transceiving unit 510 in the communication device 500 may correspond to the transceiver 620 in the communication device 600 shown in fig. 6, and the processing unit 520 in the communication device 500 may correspond to the processor 610 in the communication device 600 shown in fig. 6.

It should also be understood that when the communication device 500 is a chip, the chip includes a transceiver unit and a processing unit. The transceiving unit can be an input/output circuit or a communication interface; the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip.

The transceiving unit 510 is used for implementing transceiving operation of signals of the communication device 500, and the processing unit 520 is used for implementing processing operation of signals of the communication device 500.

Optionally, the communication device 500 further comprises a storage unit 530, the storage unit 530 being configured to store instructions.

Fig. 6 is a schematic block diagram of a communication device 600 provided in an embodiment of the present application. As shown, the communication device 600 includes: at least one processor 610 and a transceiver 620. The processor 610 is coupled to the memory for executing instructions stored in the memory to control the transceiver 620 to transmit signals and/or receive signals.

Optionally, the communication device 600 further comprises a memory 630 for storing instructions.

It will be appreciated that the processor 610 and the memory 630 may be combined into a single processing device, and that the processor 610 is configured to execute program code stored in the memory 630 to implement the functions described above. In particular implementations, the memory 630 may be integrated with the processor 610 or may be separate from the processor 610.

It is also understood that the transceiver 620 may include a receiver (or, receiver) and a transmitter (or, transmitter).

The transceiver 620 may further include one or more antennas. The transceiver 620 may be a communication interface or interface circuit.

When the communication device 600 is a chip, the chip includes a transceiving unit and a processing unit. The transceiving unit can be an input/output circuit or a communication interface; the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip.

The embodiment of the application also provides a processing device which comprises a processor and an interface. The processor may be adapted to perform the method of the above-described method embodiments.

It should be understood that the processing means may be a chip. For example, the processing device may be a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), a system on chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a digital signal processing circuit (DSP), a Microcontroller (MCU), a Programmable Logic Device (PLD), or other integrated chips.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor. To avoid repetition, it is not described in detail here.

Embodiments of the present application also provide a computer-readable storage medium on which computer instructions for implementing the method performed by the network device in the foregoing method embodiments are stored.

For example, the computer program, when executed by a computer, causes the computer to implement the method performed by the network device in the above-described method embodiments.

Embodiments of the present application also provide a computer-readable storage medium on which computer instructions for implementing the method performed by the UE in the foregoing method embodiments are stored.

For example, the computer program, when executed by a computer, causes the computer to implement the method performed by the UE in the above-described method embodiments.

Embodiments of the present application also provide a computer program product containing instructions, where the instructions, when executed by a computer, cause the computer to implement the method performed by the UE in the above method embodiments.

Embodiments of the present application further provide a computer program product containing instructions, where the instructions, when executed by a computer, cause the computer to implement the method performed by the network device in the foregoing method embodiments.

The embodiment of the present application further provides a chip system, and a processor, configured to call and run a computer program from a memory, so that a communication device in which the chip system is installed executes a method that should be executed by a UE, or executes a method that should be executed by a network device.

It is clear to those skilled in the art that for convenience and brevity of description, any of the explanations and advantages provided above for relevant contents of any of the communication apparatuses may refer to the corresponding method embodiments provided above, and no further description is provided herein.

The embodiment of the present application does not particularly limit a specific structure of an execution subject of the method provided by the embodiment of the present application, as long as communication can be performed by the method provided by the embodiment of the present application by running a program in which codes of the method provided by the embodiment of the present application are recorded. For example, an execution main body of the method provided by the embodiment of the present application may be a UE or a network device, or a functional module capable of calling a program and executing the program in the UE or the network device.

Various aspects or features of the disclosure may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media.

The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device including one or more available media integrated servers, data centers, and the like. Available media (or computer-readable media) may include, for example but not limited to: magnetic or magnetic storage devices (e.g., floppy disks, hard disks (e.g., removable hard disks), magnetic tapes), optical media (e.g., compact disks, CD's, Digital Versatile Disks (DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memories (EPROM), cards, sticks, or key drives, etc.), or semiconductor media (e.g., Solid State Disks (SSD), usb disks, read-only memories (ROMs), Random Access Memories (RAMs), etc.) that may store program code.

Various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, but is not limited to: wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

It will be appreciated that the memory referred to in the embodiments of the application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM). For example, RAM can be used as external cache memory. By way of example and not limitation, RAM may include the following forms: static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and direct bus RAM (DR RAM).

It should be noted that when the processor is a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, the memory (memory module) may be integrated into the processor.

It should also be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the above-described division of units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. Furthermore, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the scheme provided by the application.

In addition, functional units in the embodiments of the present application may be integrated into one unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof.

When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the present application are all or partially generated upon loading and execution of computer program instructions on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. For example, the computer may be a personal computer, a server, or a network appliance, among others. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, digital subscriber line) or wirelessly (e.g., infrared, wireless, microwave, etc.). With regard to the computer-readable storage medium, reference may be made to the above description.

It should be understood that the numbers "first" and "second" … are only used to distinguish different objects in the embodiments of the present application. For example, in order to distinguish different network devices, the scope of the embodiments of the present application is not limited thereto.

It should also be understood that, in this application, "when …", "if" and "if" all refer to a network element that performs the corresponding process under certain objective circumstances, and are not time-critical, nor do they require certain deterministic actions to be performed by the network element, nor do they imply that other limitations exist.

It should also be understood that in the embodiments of the present application, "B corresponding to a" means that B is associated with a, from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

It should also be understood that the term "and/or" herein is merely one type of association that describes an associated object, meaning that three types of relationships may exist. For example, a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.