阅读说明：本技术 一种针对语音起呼回落的测量方法、终端和网络设备 (Measurement method, terminal and network equipment for voice call-back ) 是由 阮航 肖善鹏 马帅 于 2018-09-05 设计创作，主要内容包括：本发明实施例公开了一种针对语音起呼回落的测量方法、终端和网络设备。所述方法包括：网络设备接收到来自终端的用于语音业务的第一无线资源控制(RRC)消息；根据自身支持的语音方案能力确定发起针对所述语音业务的语音起呼回落；向所述终端发送第二RRC消息,所述第二RRC消息中包括异系统测量字段,以使所述终端根据所述异系统测量字段执行异系统测量。(The embodiment of the invention discloses a measuring method, a terminal and network equipment for voice call-starting and call-back. The method comprises the following steps: the network equipment receives a first Radio Resource Control (RRC) message for voice service from a terminal; determining to initiate voice call fallback aiming at the voice service according to the voice scheme capability supported by the user equipment; and sending a second RRC message to the terminal, wherein the second RRC message comprises a different system measurement field, so that the terminal executes different system measurement according to the different system measurement field.)

1. A measurement method for voice originated call fallback, which is applied to a network device, and comprises:

receiving a first Radio Resource Control (RRC) message for voice service from a terminal;

determining to initiate voice call fallback aiming at the voice service according to the voice scheme capability supported by the user equipment;

and sending a second RRC message to the terminal, wherein the second RRC message comprises a different system measurement field, so that the terminal executes different system measurement according to the different system measurement field.

2. The method of claim 1, wherein receiving the first RRC message for voice service from the terminal comprises:

and receiving an RRC connection establishment request message of the terminal, wherein the RRC connection establishment request message carries a reason value representing the voice service.

3. The method of claim 1, wherein the sending the second RRC message to the terminal comprises:

sending an RRC connection establishment message to the terminal, wherein the RRC connection establishment message comprises a different system measurement field; alternatively, the first and second electrodes may be,

sending an RRC connection reconfiguration message to the terminal; the RRC connection reconfiguration message comprises a different system measurement field; alternatively, the first and second electrodes may be,

sending RRC signaling to the terminal; the RRC signaling includes a inter-system measurement field.

4. The method according to any one of claims 1 to 3, wherein the inter-system measurement field comprises measurement configuration information based on a measurement interval, so that the terminal performs inter-system measurement in the measurement interval and performs signaling in a non-measurement interval; alternatively, the first and second electrodes may be,

the inter-system measurement field includes measurement configuration information based on a measurement free interval, so that the terminal performs signaling transmission while performing inter-system measurement.

5. The method of claim 1, further comprising:

receiving a different system measurement report of the terminal, selecting a cell to be switched according to the different system measurement report, executing voice call fallback based on the cell to be switched, and switching or redirecting to the cell to be switched.

6. The method of claim 1, wherein the network device is an NR base station or a 5G base station.

7. A measurement method for voice originated call fallback is applied to a terminal, and the method comprises the following steps:

sending a first RRC message for voice service to a network device;

receiving a second RRC message of the network equipment, wherein the second RRC message comprises a different system measurement field;

and executing inter-system measurement according to the inter-system measurement field, obtaining an inter-system measurement report, and sending the inter-system measurement report to the network equipment.

8. The method of claim 7, wherein sending the first RRC message for voice traffic to the network device comprises:

and sending an RRC connection establishment request message to the network equipment, wherein the RRC connection establishment request message carries a reason value representing the voice service.

9. The method of claim 7, wherein the receiving the second RRC message of the network device comprises:

receiving an RRC connection establishment message of the network equipment, wherein the RRC connection establishment message comprises an inter-system measurement field; alternatively, the first and second electrodes may be,

receiving an RRC connection reconfiguration message of the network equipment; the RRC connection reconfiguration message comprises a different system measurement field; alternatively, the first and second electrodes may be,

receiving RRC signaling of the network device; the RRC signaling includes a inter-system measurement field.

10. The method of claim 7, wherein the inter-system measurement field comprises measurement configuration information based on a measurement interval, and wherein the performing inter-system measurements according to the inter-system measurement field comprises: the terminal carries out inter-system measurement in the measurement interval and carries out signaling transmission in a non-measurement interval; alternatively, the first and second electrodes may be,

the inter-system measurement field includes measurement configuration information based on a no measurement interval, and the performing inter-system measurement according to the inter-system measurement field includes: and the terminal performs signaling transmission while performing inter-system measurement.

11. A network device, characterized in that the network device comprises: the device comprises a first receiving unit, a determining unit and a first sending unit; wherein the content of the first and second substances,

the first receiving unit is configured to receive a first RRC message for a voice service from a terminal;

the determining unit is used for determining to initiate voice call fallback aiming at the voice service according to the voice scheme capability supported by the determining unit;

the first sending unit is configured to send a second RRC message to the terminal, where the second RRC message includes a measurement field of the inter-system, so that the terminal performs inter-system measurement according to the measurement field of the inter-system.

12. The network device according to claim 11, wherein the first receiving unit is configured to receive an RRC connection establishment request message of a terminal, where the RRC connection establishment request message carries a cause value characterizing a voice service.

13. The network device according to claim 11, wherein the first sending unit is configured to send an RRC connection setup message to the terminal, where the RRC connection setup message includes a inter-system measurement field; or, sending an RRC connection reconfiguration message to the terminal; the RRC connection reconfiguration message comprises a different system measurement field; or, sending RRC signaling to the terminal; the RRC signaling includes a inter-system measurement field.

14. The network device according to any of claims 11 to 13, wherein the inter-system measurement field comprises measurement configuration information based on a measurement interval, so that the terminal performs inter-system measurement in the measurement interval and performs signaling in a non-measurement interval; alternatively, the first and second electrodes may be,

the inter-system measurement field includes measurement configuration information based on a measurement free interval, so that the terminal performs signaling transmission while performing inter-system measurement.

15. The network device of claim 11, wherein the network device further comprises a switching unit;

the first receiving unit is further configured to receive a measurement report of the different system of the terminal;

and the switching unit is used for selecting the cell to be switched according to the inter-system measurement report, executing voice call fallback based on the cell to be switched, and switching or redirecting to the cell to be switched.

16. The network device of claim 11, wherein the network device is an NR base station or a 5G base station.

17. A terminal, characterized in that the terminal comprises a second transmitting unit, a second receiving unit and a measuring unit; wherein the content of the first and second substances,

the second sending unit is configured to send a first RRC message for a voice service to a network device;

the second receiving unit is configured to receive a second RRC message of the network device, where the second RRC message includes an inter-system measurement field;

the measurement unit is used for executing different system measurement according to the different system measurement field to obtain a different system measurement report;

the second sending unit is further configured to send the inter-system measurement report to the network device.

18. The terminal according to claim 17, wherein the second sending unit is configured to send an RRC connection establishment request message to a network device, and the RRC connection establishment request message carries a cause value characterizing a voice service.

19. The terminal according to claim 17, wherein the second receiving unit is configured to receive an RRC connection setup message of the network device, where the RRC connection setup message includes an inter-system measurement field; or, receiving an RRC connection reconfiguration message of the network device; the RRC connection reconfiguration message comprises a different system measurement field; or, receiving RRC signaling of the network device; the RRC signaling includes a inter-system measurement field.

20. The terminal according to claim 17, wherein if the inter-system measurement field includes measurement configuration information based on a measurement interval, the measurement unit performs inter-system measurement in the measurement interval, and the second sending unit and/or the second receiving unit are/is configured to perform signaling transmission in a non-measurement interval; alternatively, the first and second electrodes may be,

if the inter-system measurement field includes measurement configuration information based on no measurement interval, the second sending unit and/or the second receiving unit performs signaling transmission while the measurement unit performs inter-system measurement.

21. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 6; alternatively, the program is adapted to carry out the steps of the method of any one of claims 7 to 10 when executed by a processor.

22. A network device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method of any of claims 1 to 6 are implemented when the processor executes the program.

23. A terminal comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method according to any of claims 7 to 10 are implemented by the processor when executing the program.

Technical Field

The invention relates to the field of wireless communication, in particular to a method, a terminal and network equipment for measuring voice call-back.

Background

As the fourth generation mobile communication technology (4G) enters the commercial scale phase, the fifth generation mobile communication technology (5G) oriented in 2020 and the future has become a global research and development hotspot. There are many different voice schemes for 5G, which are associated with different networking modes. Currently, 3GPP defines two schemes for 5G New air interface (NR) networking, namely independent networking (SA) and Non-independent Networking (NSA). For the 5G independent networking mode, 3GPP proposes two schemes, namely, Voice Over New Radio Over 5G (VoNR) and Fallback (Fallback) in Evolved Packet System (EPS). The VoNR scheme is that a 5G access network and a core network provide voice services based on an IP Multimedia Subsystem (IMS), and the EPS Fallback scheme is that a terminal falls back to 4G when initiating an IMS call on the 5G network, and establishes a VoLTE voice service through the 4G access network and the core network, where the fall back mode may be handover or the like.

The inter-system measurement in the EPS Fallback scheme is measured after the signaling process of the origination call, that is, the delay of the EPS Fallback scheme includes the signaling delay of the 5G origination call, the inter-system measurement delay, the delay of the Fallback to 4G, and the delay of the VoLTE call establishment process; the different system measurement time delay is long, so that the time delay for establishing the whole EPS Fallback voice service is long, and the user experience is influenced.

Disclosure of Invention

In order to solve the existing technical problem, embodiments of the present invention provide a measurement method, a terminal, and a network device for voice origination and fallback.

In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:

the embodiment of the invention provides a measuring method aiming at voice call-starting and call-back, which is applied to network equipment and comprises the following steps:

receiving a first Radio Resource Control (RRC) message for a voice service from a terminal;

determining to initiate voice call fallback aiming at the voice service according to the voice scheme capability supported by the user equipment;

and sending a second RRC message to the terminal, wherein the second RRC message comprises a different system measurement field, so that the terminal executes different system measurement according to the different system measurement field.

In the foregoing solution, the receiving a first RRC message for a voice service from a terminal includes:

and receiving an RRC connection establishment request message of the terminal, wherein the RRC connection establishment request message carries a reason value representing the voice service.

In the foregoing solution, the sending the second RRC message to the terminal includes:

sending an RRC connection establishment message to the terminal, wherein the RRC connection establishment message comprises a different system measurement field; alternatively, the first and second electrodes may be,

sending an RRC connection reconfiguration message to the terminal; the RRC connection reconfiguration message comprises a different system measurement field; alternatively, the first and second electrodes may be,

sending RRC signaling to the terminal; the RRC signaling includes a inter-system measurement field.

In the above scheme, the inter-system measurement field includes measurement configuration information based on a measurement interval, so that the terminal performs inter-system measurement in the measurement interval and performs signaling transmission in a non-measurement interval; alternatively, the first and second electrodes may be,

the inter-system measurement field includes measurement configuration information based on a measurement free interval, so that the terminal performs signaling transmission while performing inter-system measurement.

In the above scheme, the method further comprises: receiving a different system measurement report of the terminal, selecting a cell to be switched according to the different system measurement report, executing voice call fallback based on the cell to be switched, and switching or redirecting to the cell to be switched.

In the above scheme, the network device is an NR base station or a 5G base station.

The embodiment of the invention also provides a measuring method aiming at the voice call-starting fallback, which is applied to a terminal and comprises the following steps:

sending a first RRC message for voice service to a network device;

receiving a second RRC message of the network equipment, wherein the second RRC message comprises a different system measurement field;

and executing inter-system measurement according to the inter-system measurement field, obtaining an inter-system measurement report, and sending the inter-system measurement report to the network equipment.

In the foregoing solution, the sending the first RRC message for the voice service to the network device includes:

and sending an RRC connection establishment request message to the network equipment, wherein the RRC connection establishment request message carries a reason value representing the voice service.

In the foregoing scheme, the receiving the second RRC message of the network device includes:

receiving an RRC connection establishment message of the network equipment, wherein the RRC connection establishment message comprises an inter-system measurement field; alternatively, the first and second electrodes may be,

receiving an RRC connection reconfiguration message of the network equipment; the RRC connection reconfiguration message comprises a different system measurement field; alternatively, the first and second electrodes may be,

receiving RRC signaling of the network device; the RRC signaling includes a inter-system measurement field.

In the foregoing solution, the inter-system measurement field includes measurement configuration information based on a measurement interval, and the performing inter-system measurement according to the inter-system measurement field includes: the terminal carries out inter-system measurement in the measurement interval and carries out signaling transmission in a non-measurement interval; alternatively, the first and second electrodes may be,

the inter-system measurement field includes measurement configuration information based on a no measurement interval, and the performing inter-system measurement according to the inter-system measurement field includes: and the terminal performs signaling transmission while performing inter-system measurement.

An embodiment of the present invention further provides a network device, where the network device includes: the device comprises a first receiving unit, a determining unit and a first sending unit; wherein the content of the first and second substances,

the first receiving unit is configured to receive a first RRC message for a voice service from a terminal;

the determining unit is used for determining to initiate voice call fallback aiming at the voice service according to the voice scheme capability supported by the determining unit;

the first sending unit is configured to send a second RRC message to the terminal, where the second RRC message includes a measurement field of the inter-system, so that the terminal performs inter-system measurement according to the measurement field of the inter-system.

In the foregoing solution, the first receiving unit is configured to receive an RRC connection establishment request message of a terminal, where the RRC connection establishment request message carries a cause value representing a voice service.

In the foregoing solution, the first sending unit is configured to send an RRC connection establishment message to the terminal, where the RRC connection establishment message includes an inter-system measurement field; or, sending an RRC connection reconfiguration message to the terminal; the RRC connection reconfiguration message comprises a different system measurement field; or, sending RRC signaling to the terminal; the RRC signaling includes a inter-system measurement field.

In the above scheme, the inter-system measurement field includes measurement configuration information based on a measurement interval, so that the terminal performs inter-system measurement in the measurement interval and performs signaling transmission in a non-measurement interval; alternatively, the first and second electrodes may be,

the inter-system measurement field includes measurement configuration information based on a measurement free interval, so that the terminal performs signaling transmission while performing inter-system measurement.

In the above solution, the network device further includes a switching unit;

the first receiving unit is further configured to receive a measurement report of the different system of the terminal;

and the switching unit is used for selecting the cell to be switched according to the inter-system measurement report, executing voice call fallback based on the cell to be switched, and switching or redirecting to the cell to be switched.

In the above scheme, the network device is an NR base station or a 5G base station.

The embodiment of the invention also provides a terminal, which comprises a second sending unit, a second receiving unit and a measuring unit; wherein the content of the first and second substances,

the second sending unit is configured to send a first RRC message for a voice service to a network device;

the second receiving unit is configured to receive a second RRC message of the network device, where the second RRC message includes an inter-system measurement field;

the measurement unit is used for executing different system measurement according to the different system measurement field to obtain a different system measurement report;

the second sending unit is further configured to send the inter-system measurement report to the network device.

In the foregoing solution, the second sending unit is configured to send an RRC connection establishment request message to a network device, where the RRC connection establishment request message carries a cause value representing a voice service.

In the foregoing solution, the second receiving unit is configured to receive an RRC connection setup message of the network device, where the RRC connection setup message includes an inter-system measurement field; or, receiving an RRC connection reconfiguration message of the network device; the RRC connection reconfiguration message comprises a different system measurement field; or, receiving RRC signaling of the network device; the RRC signaling includes a inter-system measurement field.

In the foregoing solution, if the inter-system measurement field includes measurement configuration information based on a measurement interval, the measurement unit performs inter-system measurement in the measurement interval, and the second sending unit and/or the second receiving unit is configured to perform signaling transmission in a non-measurement interval; alternatively, the first and second electrodes may be,

if the inter-system measurement field includes measurement configuration information based on no measurement interval, the second sending unit and/or the second receiving unit performs signaling transmission while the measurement unit performs inter-system measurement.

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the measurement method for voice originated call fallback, where the method is applied to a network device; or, the program is executed by a processor to implement the steps of the measurement method for voice originated call fallback, which is applied to the terminal according to the embodiment of the present invention.

The embodiment of the invention also provides network equipment, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein when the processor executes the program, the steps of the measurement method for the voice call-back and the call-back applied to the network equipment in the embodiment of the invention are realized.

The embodiment of the invention also provides a terminal, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein when the processor executes the program, the steps of the measurement method for the voice call-back and the call-back applied to the terminal in the embodiment of the invention are realized.

The embodiment of the invention provides a measuring method, a terminal and network equipment for voice call-back, wherein the method comprises the following steps: the network equipment receives a first RRC message for voice service from a terminal; determining to initiate voice call fallback aiming at the voice service according to the voice scheme capability supported by the user equipment; and sending a second RRC message to the terminal, wherein the second RRC message comprises a different system measurement field, so that the terminal executes different system measurement according to the different system measurement field. By adopting the technical scheme of the embodiment of the invention, the inter-system measurement is preposed aiming at the scene that the voice call fallback scheme needs to be executed, and the inter-system measurement is specifically carried out in the call signaling process, so that the time delay of the voice call fallback process is greatly shortened, and the user experience is improved.

Drawings

Fig. 1 is a schematic flow chart of a measurement method for voice originated call fallback according to an embodiment of the present invention;

FIG. 2 is a schematic flow chart illustrating a measurement method for a voice originated call fallback according to an embodiment of the present invention;

FIG. 3 is a schematic flow chart of a measurement method for a voice originated call fallback according to an embodiment of the present invention;

FIG. 4 is an interaction diagram of a voice origination and fallback in the prior art;

FIG. 5 is a schematic diagram of a network device according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of another structure of a network device according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a terminal according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The embodiment of the invention provides a measuring method for voice call-starting and call-back. Fig. 1 is a schematic flow chart of a measurement method for voice originated call fallback according to an embodiment of the present invention; as shown in fig. 1, the method includes:

step 101: a first RRC message for a voice service is received from a terminal.

Step 102: and determining to initiate voice call fallback aiming at the voice service according to the voice scheme capability supported by the user equipment.

Step 103: and sending a second RRC message to the terminal, wherein the second RRC message comprises a different system measurement field, so that the terminal executes different system measurement according to the different system measurement field.

The method for measuring the voice call-back of the embodiment is applied to network equipment, wherein the network equipment is network equipment in a communication system; in the present embodiment, the communication system is, for example, a 5G system. Here, the communication system applicable to this embodiment is a communication system that adopts a 5G independent networking scheme, and the independent networking scheme is specifically an EPS Fallback scheme, that is, for a voice service, when a terminal initiates an IMS call on a 5G network, the terminal falls back to a 4G network, and performs the voice service through a 4G access network and a core network.

Where a network device may be a device that communicates with a terminal, the network device may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area. Alternatively, the network device may be an NR base station or a 5G base station in a 5G system. In the following embodiments, a network device is taken as a base station (NR base station or 5G base station) as an example for explanation.

In an embodiment, the receiving a first RRC message for a voice service from a terminal includes: and receiving an RRC connection establishment request message of the terminal, wherein the RRC connection establishment request message carries a reason value representing the voice service.

In this embodiment, the terminal actively initiates a call Request in an idle state, or after receiving a paging message as a called party, sends an RRC Connection Request (RRC Connection Request) message to the base station, where the RRC Connection Request message carries a cause value which may be "voice," indicating that the RRC Connection Request message is used for a voice service.

In the embodiment, a base station receives an RRC connection establishment request message sent by a terminal, judges that the voice service is the voice service according to a cause value carried in the RRC connection establishment request message, and determines to initiate voice call back aiming at the voice service according to semantic scheme capability supported by the base station; wherein the voice origination Fallback is a voice origination Fallback for a 5G system, and as an example, the voice origination Fallback may be an EPS Fallback scheme.

As an implementation manner, if the base station only supports the EPS Fallback scheme, the base station determines to initiate the voice call back for the voice service according to the voice scheme supported by the base station, that is, initiates the EPS Fallback. If the base station supports other voice schemes besides the EPS Fallback scheme, the base station may determine, based on the relevant configuration information, that it is necessary to initiate a voice call back for the voice service, that is, initiate an EPS Fallback.

In this embodiment, a base station sends a second RRC message to a terminal, where the second RRC message carries a measurement field of a different system, and the measurement field of the different system is used for the terminal to perform different system measurement; namely, the method advances the inter-system measurement process to the signaling interaction process of the call in the 5G communication system, namely, the Service Request (Service Request) process.

In an embodiment, the sending the second RRC message to the terminal includes: sending an RRC connection establishment message to the terminal, wherein the RRC connection establishment message comprises a different system measurement field; or, sending an RRC connection reconfiguration message to the terminal; the RRC connection reconfiguration message comprises a different system measurement field; or, sending RRC signaling to the terminal; the RRC signaling includes a inter-system measurement field.

As a first embodiment, a base station transmits an RRC Connection Setup (RRC Connection Setup) message to a terminal; the RRC connection establishment message is sent after receiving the RRC connection establishment request message; the RRC connection setup message carries a field for inter-system measurement.

As a second embodiment, in the call initiation process, after the RRC Connection setup is completed, the base station sends an RRC Connection Reconfiguration (RRC Connection Reconfiguration) message to the terminal; the RRC connection reconfiguration message carries a field for inter-system measurement.

As a third embodiment, the base station may also send the inter-system measurement field through other independent RRC signaling different from the above-mentioned RRC signaling; however, it should be noted that the RRC signaling is sent during the origination procedure, that is, the base station can obtain the inter-system measurement report of the terminal before the origination procedure is completed.

In the embodiment of the present invention, the inter-system measurement field includes measurement configuration information based on a measurement interval, so that the terminal performs inter-system measurement in the measurement interval and performs signaling transmission in a non-measurement interval; or, the inter-system measurement field includes measurement configuration information based on a measurement free interval, so that the terminal performs signaling transmission while performing inter-system measurement.

In an embodiment, the method further comprises: receiving a different system measurement report of the terminal, selecting a cell to be switched according to the different system measurement report, executing voice call fallback based on the cell to be switched, and switching or redirecting to the cell to be switched.

In this embodiment, a base station receives a measurement report of a different system of a terminal; here, the base station may periodically receive the inter-system measurement report of the terminal; when the voice call back is required to be executed, selecting a cell to be switched from the different system measurement reports (such as the latest different system measurement report), wherein the cell to be switched is a 4G cell; in practical application, a 4G cell with the best communication quality (e.g. the strongest signal) can be selected from the inter-system measurement reports as the cell to be handed over, and voice-initiated call-back-drop handover or redirection can be performed to the cell to be handed over.

As an example, taking the second RRC message as an RRC connection setup message, an example of a code carrying the inter-system measurement field in the RRC connection setup message may be as follows:

wherein "measConfig" denotes the inter-system measurement field.

By adopting the technical scheme of the embodiment of the invention, the inter-system measurement is preposed aiming at the scene that the voice call fallback scheme needs to be executed, and the inter-system measurement is specifically carried out in the call signaling process, so that the time delay of the voice call fallback process is greatly shortened, and the user experience is improved.

The embodiment of the invention also provides a measuring method aiming at the voice call-starting fallback. FIG. 2 is a schematic flow chart illustrating a measurement method for a voice originated call fallback according to an embodiment of the present invention; as shown in fig. 2, the method includes:

step 201: a first RRC message for voice traffic is sent to a network device.

Step 202: and receiving a second RRC message of the network equipment, wherein the second RRC message comprises an inter-system measurement field.

Step 203: and executing inter-system measurement according to the inter-system measurement field, obtaining an inter-system measurement report, and sending the inter-system measurement report to the network equipment.

The method for measuring the voice call-back in the embodiment is applied to a terminal, wherein the terminal is a terminal in a communication system and can be positioned in the coverage area of network equipment; in the present embodiment, the communication system is, for example, a 5G system. Examples of terminals include, but are not limited to, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks or terminal devices in future-evolved PLMNs, etc., as one example, a terminal may be a cell phone.

As an embodiment, the sending the first RRC message for the voice service to the network device includes: sending an RRC Connection establishment Request (RRC Connection Request) message to the network equipment, wherein the RRC Connection establishment Request message carries a reason value representing the voice service.

In this embodiment, the terminal actively initiates a call request in an idle state, or after receiving a paging message as a called party, sends an RRC connection establishment request message to the base station, where the RRC connection establishment request message carries a cause value that may be "voice," indicating that the RRC connection establishment request message is used for a voice service.

As an embodiment, the receiving the second RRC message of the network device includes: receiving an RRC connection establishment message of the network equipment, wherein the RRC connection establishment message comprises an inter-system measurement field; or, receiving an RRC connection reconfiguration message of the network device; the RRC connection reconfiguration message comprises a different system measurement field; or, receiving RRC signaling of the network device; the RRC signaling includes a inter-system measurement field.

As a first embodiment, the terminal receives an RRC Connection Setup (RRC Connection Setup) message; the RRC connection establishment message is received after the RRC connection establishment request message is sent; the RRC connection setup message carries a field for inter-system measurement.

As a second embodiment, in the originating process, after the RRC Connection setup is completed, the terminal receives an RRC Connection Reconfiguration (RRC Connection Reconfiguration) message; the RRC connection reconfiguration message carries a field for inter-system measurement.

As a third embodiment, the base station may also send the inter-system measurement field through another independent RRC signaling different from the above-mentioned RRC signaling, and the terminal receives the RRC signaling; however, it should be noted that the RRC signaling is received during the origination procedure, that is, the base station can obtain the inter-system measurement report of the terminal before the origination procedure is completed.

In this embodiment, the inter-system measurement field includes measurement configuration information based on a measurement interval, and the performing inter-system measurement according to the inter-system measurement field includes: the terminal carries out inter-system measurement in the measurement interval and carries out signaling transmission in a non-measurement interval; or, the inter-system measurement field includes measurement configuration information based on a no measurement interval (no Gap), and the performing inter-system measurement according to the inter-system measurement field includes: and the terminal performs signaling transmission while performing inter-system measurement.

As a first implementation manner, for inter-system measurement based on a measurement interval, a terminal performs inter-system measurement in the measurement interval and performs signaling transmission in a non-measurement interval. As a second implementation manner, for inter-system measurement based on no measurement interval, the terminal may perform continuous measurement, that is, may perform signaling transmission while performing inter-system measurement.

In this embodiment, after the terminal completes the inter-system measurement, the terminal sends an inter-system measurement report to the network device. As an example, the terminal may periodically perform inter-system measurement and send an inter-system measurement report to the network device.

By adopting the technical scheme of the embodiment of the invention, the inter-system measurement is preposed aiming at the scene that the voice call fallback scheme needs to be executed, and the inter-system measurement is specifically carried out in the call signaling process, so that the time delay of the voice call fallback process is greatly shortened, and the user experience is improved.

The following describes in detail a measurement method for voice originated call fallback according to an embodiment of the present invention with reference to a specific example.

FIG. 3 is a schematic flow chart of a measurement method for a voice originated call fallback according to an embodiment of the present invention; as shown in fig. 3, includes:

step 301: a User Equipment (UE) sends AN RRC connection request message to a (Radio) Access Network ((R) AN). As AN example, the (R) AN may specifically be a base station, such as a 5G base station or AN NR base station, and the (R) AN is denoted as the base station in the following description.

Here, the cause value carried by the RRC connection request message is "voice", indicating that the RRC connection establishment request message is for a voice service. The base station judges that the voice service is the voice service according to the reason value carried in the RRC connection establishment request message, and then determines to initiate voice call-back aiming at the 5G system according to the semantic scheme capability supported by the base station.

Step 302: a base station sends RRC connection establishment information to UE; the RRC connection setup message carries a field for inter-system measurement.

Step 303: UE sends RRC connection establishment completion message to base station; the RRC connection setup complete message carries the related NAS signaling.

Step 304: the base station sends an N2Message (N2Message) to an Access and Mobility management function (AMF); the message N2 carries NAS signaling for the service request.

In the subsequent flow, a safety-based authentication flow is performed between the UE and the AMF, and between the AMF and a Session Management Function (SMF); after the authentication is completed, the AMF and the SFM request the establishment of a Protocol Data Unit (PDU) Session (Session) link through signaling interaction.

Step 305: the AMF sends an N2Request (N2Request) message to the base station.

Step 306: and the base station sends an RRC connection reconfiguration message to the UE.

Step 307: and the UE sends an RRC connection reconfiguration completion message to the base station.

Step 308: the base station sends an N2Request acknowledgement (N2Request ACK) message to the AMF.

Step 309: and the UE sends the inter-system measurement report to the base station. After receiving the inter-system measurement field, the UE performs inter-system measurement based on the inter-system measurement field.

As an example, the inter-system measurement field includes measurement configuration information based on a measurement interval in which the terminal performs inter-system measurement and a non-measurement interval in which signaling is transmitted; as another example, the inter-system measurement field includes measurement configuration information based on a no measurement interval, and the terminal performs signaling while performing inter-system measurement. After the measurement of the different system is finished, a different system measurement report is sent to the base station; the inter-system measurement report may include all 4G cells measured by the terminal and corresponding related parameters (the related parameters may include parameters characterizing channel quality); or, the inter-system measurement report may also include a 4G cell with the best channel quality measured by the terminal. The base station needs to execute EPS Fallback, and can select the 4G cell with the best channel quality from the measurement reports of the different systems to execute cell switching or redirection.

In the subsequent flow, the AMF establishes a PDU Session (Session) link through signaling interaction before the SFM.

In this embodiment, an example that the RRC connection setup message carries the inter-system measurement field is taken to describe, at present, the inter-system measurement field may also be carried in the RRC connection reconfiguration message, or the inter-system measurement field may also be carried in another independent RRC signaling different from the above RRC signaling, and the sending timing of the RRC signaling may be any timing before the PDU session link setup is completed.

FIG. 4 is an interaction diagram of a voice origination and fallback in the prior art; fig. 4 is a signaling interaction flow of a call, i.e., a Service Request (Service Request) process, different from that shown in fig. 3 of the present application, in which an RRC message (e.g., an RRC connection setup message) does not carry a measurement field of a different system, and accordingly, in the process, the terminal does not perform measurement of the different system and does not report a measurement report. The process is used for establishing a quality of service (QoS) flow with a level of 5 to carry Session Initiation Protocol (SIP) signaling, and specifically includes:

UE sends SIP signaling request (Invite) to IMS, IMS receives SIP signaling request, then informs core network to prepare to set up load, core network instructs base station to set up QoS flow with grade 1 to load voice service.

If the base station selects the EPS Fallback scheme, the QoS flow of the voice service is refused to be established, and an EPSFallback process is executed. The base station firstly triggers the measurement process of the different system, sends a measurement control message to instruct the terminal to carry out 4G measurement, and selects a 4G cell according to the measurement result after the terminal reports a 4G measurement report. Therefore, the inter-system measurement in the prior art is performed after the signaling process of the call origination.

The base station performs a handover/redirection procedure to the selected 4G cell, after which the terminal completes the VoLTE call setup on the 4G.

As can be seen from the above, the EPS Fallback voice service establishment delay from the idle state includes the signaling delay of the 5G origination call + the inter-system measurement delay + the fall-back to 4G delay + the VoLTE call establishment delay.

On the other hand, the time delay of the inter-system measurement is longer.

As an example, for the inter-system Measurement based on the Measurement interval, assuming that a Measurement interval Repetition Period (MGRP) is a minimum value (e.g., 20ms), and a Measurement interval Length (MGL) is 6ms, since it takes 6ms to measure one 4G frequency point, that is, it takes to measure one 4G frequency point in one Measurement interval Repetition Period, and it takes 5 times to measure 4G frequency points in the average, each frequency point, so that the inter-system Measurement delay is 20 × 4 × 5 ═ 400 ms.

As another example, for inter-system measurements based on no measurement interval, referring to the above assumption, the inter-system measurement delay is 6 × 4 × 5 — 120ms since continuous measurements are possible.

By adopting the measurement scheme of the embodiment of the invention, the inter-system measurement is preposed, namely the inter-system measurement is carried out in the signaling interaction process of the initial call, so that the EPS Fallback voice service establishment delay comprises the signaling delay (new) of the 5G initial call, the delay falling back to 4G and the VoLTE call establishment delay.

As a first implementation manner, for the inter-system measurement based on the measurement interval, the above assumption is still adopted, and the inter-system measurement delay is 400ms, and the signaling delay (new) of the 5G origination is the maximum value of 200 and 400, that is, 400ms, so that the epsilonback voice service establishment delay is shortened by 200+ 400-.

As another embodiment, for the inter-system measurement based on the non-measurement interval, referring to the above assumption, the introduced inter-system measurement delay is 120ms, and the signaling delay (new) of the 5G origination is the maximum of 200 and 120, i.e. 200ms, so the EPS Fallback voice service establishment delay is shortened by 200+ 120-.

Therefore, the technical scheme of the application greatly shortens the time delay of the voice call-back process and improves the user experience.

The embodiment of the invention also provides network equipment. FIG. 5 is a schematic diagram of a network device according to an embodiment of the present invention; as shown in fig. 5, the network device includes: a first receiving unit 41, a determining unit 42, and a first transmitting unit 43; wherein the content of the first and second substances,

the first receiving unit 41 is configured to receive a first RRC message for a voice service from a terminal;

the determining unit 42 is configured to determine to initiate a voice call fallback for the voice service according to the voice scheme capability supported by the determining unit;

the first sending unit 43 is configured to send a second RRC message to the terminal, where the second RRC message includes a measurement field of the inter-system, so that the terminal performs inter-system measurement according to the measurement field of the inter-system.

In this embodiment, the network device is an NR base station or a 5G base station.

In an embodiment, the first receiving unit 41 is configured to receive an RRC connection establishment request message of a terminal, where the RRC connection establishment request message carries a cause value representing a voice service.

In an embodiment, the first sending unit 43 is configured to send an RRC connection setup message to the terminal, where the RRC connection setup message includes an inter-system measurement field; or, sending an RRC connection reconfiguration message to the terminal; the RRC connection reconfiguration message comprises a different system measurement field; or, sending RRC signaling to the terminal; the RRC signaling includes a inter-system measurement field.

In an embodiment, the inter-system measurement field includes measurement configuration information based on a measurement interval, so that the terminal performs inter-system measurement in the measurement interval and performs signaling transmission in a non-measurement interval; alternatively, the first and second electrodes may be,

the inter-system measurement field includes measurement configuration information based on a measurement free interval, so that the terminal performs signaling transmission while performing inter-system measurement.

In an embodiment, as shown in fig. 6, the network device further includes a switching unit 44;

the first receiving unit 41 is further configured to receive an inter-system measurement report of the terminal;

the switching unit 44 is configured to select a cell to be switched according to the inter-system measurement report, execute voice call fallback based on the cell to be switched, and switch or redirect to the cell to be switched.

In the embodiment of the present invention, the determining Unit 42 and the switching Unit 44 in the network device may be implemented by a Central Processing Unit (CPU), a Digital Signal Processor (DSP), a Micro Control Unit (MCU), or a Programmable Gate Array (FPGA) in the network device in practical application; the first receiving unit 41 and the first transmitting unit 43 in the terminal can be implemented by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a protocol, and the like) and a transceiving antenna in practical application.

It should be noted that: in the network device provided in the foregoing embodiment, when performing measurement for a voice origination and call back, only the division of the program modules is illustrated, and in practical applications, the processing distribution may be completed by different program modules according to needs, that is, the internal structure of the network device is divided into different program modules to complete all or part of the processing described above. In addition, the network device provided by the above embodiment and the embodiment of the measurement method for the voice call-back fall belong to the same concept, and the specific implementation process thereof is described in detail in the embodiment of the method and will not be described herein again.

The embodiment of the invention also provides the terminal. Fig. 7 is a schematic structural diagram of a terminal according to an embodiment of the present invention; as shown in fig. 7, the terminal includes a second transmitting unit 51, a second receiving unit 52, and a measuring unit 53; wherein the content of the first and second substances,

the second sending unit 51 is configured to send a first RRC message for a voice service to a network device;

the second receiving unit 52 is configured to receive a second RRC message of the network device, where the second RRC message includes an inter-system measurement field;

the measurement unit 53 is configured to perform inter-system measurement according to the inter-system measurement field to obtain an inter-system measurement report;

the second sending unit 51 is further configured to send the inter-system measurement report to the network device.

In an embodiment, the second sending unit 51 is configured to send an RRC connection establishment request message to a network device, where the RRC connection establishment request message carries a cause value representing a voice service.

In an embodiment, the second receiving unit 52 is configured to receive an RRC connection setup message of the network device, where the RRC connection setup message includes an inter-system measurement field; or, receiving an RRC connection reconfiguration message of the network device; the RRC connection reconfiguration message comprises a different system measurement field; or, receiving RRC signaling of the network device; the RRC signaling includes a inter-system measurement field.

In an embodiment, if the inter-system measurement field includes measurement configuration information based on a measurement interval, the measurement unit 53 performs inter-system measurement in the measurement interval, and the second sending unit 51 and/or the second receiving unit 52 are configured to perform signaling transmission in a non-measurement interval; alternatively, the first and second electrodes may be,

if the inter-system measurement field includes measurement configuration information based on no measurement interval, the measurement unit 53 performs inter-system measurement and at the same time, the second sending unit 51 and/or the second receiving unit 52 performs signaling transmission.

In the embodiment of the present invention, the second sending unit 51 and the second receiving unit 52 in the terminal can be implemented by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a protocol, etc.) and a transceiving antenna in practical application; the measurement unit 53 in the terminal can be implemented by a CPU, a DSP, an MCU, or an FPGA in combination with a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a protocol, etc.) and a transceiver antenna in practical application.

It should be noted that: in the terminal provided in the foregoing embodiment, when performing measurement for a voice origination call back drop, only the division of the program modules is illustrated, and in practical applications, the processing distribution may be completed by different program modules according to needs, that is, the internal structure of the terminal is divided into different program modules to complete all or part of the processing described above. In addition, the terminal provided by the above embodiment and the embodiment of the measurement method for the voice call-back fall belong to the same concept, and the specific implementation process thereof is described in the embodiment of the method and will not be described herein again.

When the device is a network device, the processor executes the program to realize the steps of the measurement method for the voice call fallback applied to the network device in the embodiment of the present invention; when the device is a terminal, the processor executes the program to implement the steps of the measurement method for the voice originated call fallback applied to the terminal in the embodiment of the present invention.

It is understood that the device also includes a communication interface; the various components in the device may be coupled together by a bus system. It will be appreciated that a bus system is used to enable communications among the components. The bus system includes a power bus, a control bus, and a status signal bus in addition to a data bus.

It will be appreciated that the memory can be either volatile memory or nonvolatile memory, and can include both volatile and nonvolatile memory. Among them, the nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical disk, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), Synchronous Dynamic Random Access Memory (SLDRAM), Direct Memory (DRmb Access), and Random Access Memory (DRAM). The described memory for embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.

The method disclosed by the embodiment of the invention can be applied to a processor or realized by the processor. The processor may be an integrated circuit chip having signal processing capabilities. 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 processor described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The processor may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium having a memory and a processor reading the information in the memory and combining the hardware to perform the steps of the method.

Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method according to the embodiments of the present invention; alternatively, the program implements the steps of the method described in the embodiments of the present invention when executed by a processor.

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. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

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, that is, 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 achieve the purpose of the solution of the embodiment.

In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.

Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention 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 invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.