阅读说明：本技术 一种接入方法及设备 (Access method and device ) 是由 谢宗慧 王宏 于 2020-06-09 设计创作，主要内容包括：本申请实施例提供一种接入方法及设备,涉及通信技术领域,解决了当终端设备与飞行平台在较大通信距离进行通信时,终端设备和飞行平台需要使用较大的发射功率,导致较大的功率消耗的问题。具体方案为：终端设备获取与接入网设备之间的传输参数；终端设备根据传输参数和参考信息确定满足预设条件时接入接入网设备,参考信息包括传输参数的对应的门限值。本申请实施例用于通信接入。(The embodiment of the application provides an access method and equipment, relates to the technical field of communication, and solves the problem that when terminal equipment and a flight platform communicate at a large communication distance, the terminal equipment and the flight platform need to use large transmitting power, so that large power consumption is caused. The specific scheme is as follows: the method comprises the steps that terminal equipment obtains transmission parameters between the terminal equipment and access network equipment; and the terminal equipment accesses the access network equipment when the preset conditions are met according to the transmission parameters and the reference information, wherein the reference information comprises the corresponding threshold values of the transmission parameters. The embodiment of the application is used for communication access.)

1. An access method, comprising:

the method comprises the steps that terminal equipment obtains transmission parameters between the terminal equipment and access network equipment;

and the terminal equipment accesses the access network equipment when determining that the transmission parameters and the reference information meet preset conditions, wherein the reference information comprises a threshold value corresponding to the transmission parameters.

2. The method of claim 1, wherein the reference information comprises one or more of a channel parameter threshold, a doppler shift threshold, or a distance threshold between the terminal device and the access network device.

3. The method of claim 2, wherein the transmission parameters comprise channel parameters, and wherein the preset conditions comprise:

the channel parameter is greater than or equal to the channel parameter threshold value.

4. The method of claim 2, wherein the transmission parameters comprise channel parameters, and wherein the preset conditions comprise:

the absolute value of the variation of the channel parameter in a unit time is less than or equal to the channel parameter threshold value.

5. The method according to claim 2, wherein the transmission parameter comprises a channel parameter, the channel parameter threshold value is 0, and the preset condition comprises:

the variation of the channel parameter per unit time is greater than 0.

6. The method according to claim 2, wherein the transmission parameter includes a doppler shift, the threshold value of the doppler shift is 0, and the preset condition includes:

the doppler shift is less than 0.

7. The method of claim 2, wherein the transmission parameter comprises a distance, and wherein the preset condition comprises:

the distance is less than or equal to the distance threshold value.

8. The method of claim 2, wherein the transmission parameter comprises a distance, and wherein the preset condition comprises:

the amount of change in the distance per unit time is less than or equal to the distance threshold value.

9. The method of claim 2, wherein the transmission parameter comprises a distance, wherein the distance threshold is 0, and wherein the preset condition comprises:

the variation of the distance is less than 0.

10. The method according to any one of claims 1-9, further comprising:

and when the terminal equipment determines that the transmission parameters and the reference information do not meet the preset conditions, the terminal equipment periodically determines whether to access the access network equipment according to the reference information.

11. The method according to any one of claims 3 to 9, wherein the transmission parameters further include an uplink data amount, and the preset condition further includes:

and the uplink data volume is less than or equal to the data volume threshold value.

12. The method of claim 11, further comprising:

and if the terminal equipment determines that the uplink data volume is larger than the data volume threshold value, accessing the access network equipment.

13. The method according to any one of claims 1-12, further comprising:

and the terminal equipment receives first capability indication information from the access network equipment, wherein the first capability indication information is used for indicating the terminal equipment to access the access network equipment according to the transmission parameters and the reference information.

14. The method according to any one of claims 1-12, further comprising:

the terminal equipment receives second capability indication information from the access network equipment, wherein the second capability indication information is used for indicating the terminal equipment to access the access network equipment according to the transmission parameters and the reference information when executing the first service;

the terminal device accesses the access network device when determining that preset conditions are met according to the transmission parameters and the reference information, and the method comprises the following steps:

and the terminal equipment accesses the access network equipment according to the transmission parameters and the reference information when executing the first service.

15. The method according to any one of claims 1-14, further comprising:

and the terminal equipment receives the reference information from the access network equipment.

16. An access method, comprising:

the method comprises the steps that access network equipment sends capacity indication information to terminal equipment, wherein the capacity indication information comprises first capacity indication information or second capacity indication information, and the first capacity indication information is used for indicating the terminal equipment to access the access network equipment according to transmission parameters and reference information; the second capability indication information is used for indicating the terminal equipment to access the access network equipment according to the transmission parameters and the reference information when executing the first service;

and the access network equipment sends reference information to the terminal equipment, wherein the reference information comprises a reference value of a transmission parameter between the access network equipment and the terminal equipment.

17. A communication device is characterized by comprising a transceiver module and a processing module;

wherein the transceiver module is configured to: acquiring transmission parameters between the access network equipment and the access network equipment;

the processing module is used for: and accessing the access network equipment when the transmission parameters and the reference information meet preset conditions, wherein the reference information comprises a threshold value corresponding to the transmission parameters.

18. The communications apparatus of claim 17, wherein the reference information comprises one or more of a channel parameter threshold, a doppler shift threshold, or a distance threshold between the communications apparatus and the access network device.

19. The communications apparatus as claimed in claim 18, wherein the transmission parameters comprise channel parameters, and the preset conditions comprise:

the channel parameter is greater than or equal to the channel parameter threshold value.

20. The communications apparatus as claimed in claim 18, wherein the transmission parameters comprise channel parameters, and the preset conditions comprise:

the absolute value of the variation of the channel parameter in a unit time is less than or equal to the channel parameter threshold value.

21. The communications apparatus as claimed in claim 18, wherein the transmission parameter comprises a channel parameter, the channel parameter threshold is 0, and the preset condition comprises:

the variation of the channel parameter per unit time is greater than 0.

22. The communications apparatus as claimed in claim 18, wherein the transmission parameter includes a doppler shift, the threshold value of the doppler shift is 0, and the preset condition includes:

the doppler shift is less than 0.

23. The communications apparatus as claimed in claim 18, wherein the transmission parameter comprises a distance, and the preset condition comprises:

the distance is less than or equal to the distance threshold value.

24. The communications apparatus as claimed in claim 18, wherein the transmission parameter comprises a distance, and the preset condition comprises:

the amount of change in the distance per unit time is less than or equal to the distance threshold value.

25. The communications apparatus as claimed in claim 18, wherein the transmission parameter includes a distance, the distance threshold is 0, and the preset condition includes:

the variation of the distance is less than 0.

26. The communications device of any one of claims 17-25, wherein the processing module is further configured to:

and when the transmission parameters and the reference information are determined not to meet the preset conditions, periodically determining whether to access the access network equipment according to the reference information.

27. The communications apparatus according to any one of claims 19 to 25, wherein the transmission parameter further includes an uplink data amount, and the preset condition further includes:

and the uplink data volume is less than or equal to the data volume threshold value.

28. A communication device is characterized by comprising a transceiver module and a processing module; wherein the processing module is configured to:

sending capability indication information to terminal equipment through the transceiver module, wherein the capability indication information comprises first capability indication information or second capability indication information, and the first capability indication information is used for indicating the terminal equipment to access the communication device according to transmission parameters and reference information; the second capability indication information is used for indicating the terminal equipment to access the communication device according to the transmission parameters and the reference information when executing the first service;

the processing module is further configured to: and sending reference information to the terminal equipment through the transceiver module, wherein the reference information comprises a reference value of a transmission parameter between the communication device and the terminal equipment.

29. A communications apparatus, comprising: a processor and a memory; wherein the memory is configured to store computer instructions that, when executed by the communication device, are executed by the processor to perform the method of any one of claims 1 to 15, or the method of claim 16.

30. A computer-readable storage medium having stored therein instructions which, when executed, implement the method of any one of claims 1-15 or the method of claim 16.

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to an access method and equipment.

Background

In 5G communication systems and future communication systems, non-terrestrial communication networks (NTNs) gradually come out of the corner of the communication field, and have the advantage of wide coverage by communicating through aircrafts such as airplanes, high-altitude balloons, satellites and the like.

The NTN communication scenario is shown in fig. 1, and includes a data network (data network), a Gateway (Gateway), a flight platform (e.g., satellite, drone, etc.), and a terminal device. Wherein the maximum communication distance between the flying platform and the terminal device is much larger than the track height, which is generally regarded as the minimum communication distance between the flying platform and the terminal device. Because the difference between the minimum communication distance and the maximum communication distance between the flight platform and the terminal device is large, when the terminal device communicates with the flight platform at the maximum communication distance, the terminal device and the flight platform need to use large transmission power, resulting in large power consumption. How to solve the problem of large power consumption is a problem to be considered in the field.

Disclosure of Invention

The embodiment of the application provides an access method and equipment, wherein the terminal equipment is only accessed to the access network equipment when the distance between the terminal equipment and a flight platform is short, so that the power consumption caused by the fact that the access network equipment needs to use large transmitting power when the distance between the terminal equipment and the flight platform is long is avoided.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in one aspect, an embodiment of the present application provides an access method, where the method includes: the method comprises the steps that terminal equipment obtains transmission parameters between the terminal equipment and access network equipment; and the terminal equipment accesses the access network equipment when the preset conditions are met according to the transmission parameters and the reference information, wherein the reference information comprises a threshold value corresponding to the transmission parameters.

In the scheme, the terminal equipment is determined to be accessed to the access network equipment when the preset condition is met according to the transmission parameter and the reference information, but not to be accessed to the access network equipment under any condition, so that the access network equipment can be accessed when the flying platform is close to the terminal equipment, and power consumption caused by the fact that the terminal equipment is far away from the flying platform and needs to use large transmitting power is avoided.

In one possible design, the method further includes: the reference information comprises one or more of a channel parameter threshold value, a Doppler shift threshold value or a distance threshold value between the terminal equipment and the access network equipment. Therefore, whether the terminal equipment is accessed to the access network equipment or not is judged by combining a plurality of parameters, and the judgment accuracy can be improved.

In one possible design, the transmission parameter includes a channel parameter, and the corresponding reference information includes a channel parameter threshold between the terminal device and the access network device; the preset conditions include: and the channel parameter between the terminal equipment and the access network equipment is greater than or equal to the channel parameter threshold value.

In the scheme, the channel parameter between the terminal equipment and the access network equipment is greater than or equal to the threshold value of the channel parameter, the signal strength between the terminal equipment and the access network equipment is higher, namely the distance between the terminal equipment and the flying platform is shorter, so that the transmitting power required when the terminal equipment is accessed to the access network equipment is smaller, and the power consumption is less.

In another possible design, the transmission parameters include channel parameters; the preset conditions include: and the absolute value of the channel parameter variation between the terminal equipment and the access network equipment in unit time is less than or equal to the channel parameter threshold value.

In the scheme, the variation of the channel parameter between the terminal equipment and the access network equipment in unit time is less than or equal to the threshold value of the channel parameter, and the variation of the channel parameter between the terminal equipment and the access network equipment is slow, namely the variation of the distance between the terminal equipment and the flying platform is slow. According to the common knowledge in the field, when the flying platform is close to the terminal equipment, the change between the flying platform and the terminal equipment is slow. Therefore, the distance between the terminal equipment and the flying platform is short. Therefore, the transmitting power required by the terminal equipment when the terminal equipment is accessed to the access network equipment is smaller, and the power consumption is smaller.

In yet another possible design, the transmission parameter includes a channel parameter, and the channel parameter threshold is 0; the preset conditions include: the variation of the channel parameter between the terminal equipment and the access network equipment in unit time is larger than 0.

In the scheme, the fact that the variation of the channel parameter between the terminal device and the access network device in unit time is greater than 0 means that the signal strength between the terminal device and the access network device is increasingly greater, that is, the distance between the terminal device and the flight platform tends to be closer. The flying platform moves at a high speed. Therefore, when the terminal equipment judges that the variation of the channel parameters is larger than 0 in unit time, the distance between the terminal equipment and the flight platform tends to become closer and closer, and the flight platform moves to a position close to the terminal equipment quickly. Thereafter, when the terminal device accesses the access network device, the flying platform may have moved to a location that is closer to the terminal device. At this time, the distance between the terminal device and the flight platform is short, the transmitting power required by the terminal device to access the access network device is small, and the power consumption is small. Thus, the terminal device accesses the access network device.

For example, the channel parameters include one or more of RSRP, RSRQ, SINR, or SNR.

In one possible design, the transmission parameters include a doppler shift, and the doppler shift threshold is 0; the preset conditions include: the Doppler frequency shift between the terminal equipment and the access network equipment is less than 0.

In the scheme, the doppler shift between the terminal device and the access network device is smaller than 0, which means that the distance between the terminal device and the flying platform tends to be closer and closer. The flying platform moves at a high speed. Therefore, when the terminal device judges that the distance between the terminal device and the access network device is closer and closer according to the fact that the Doppler frequency shift between the terminal device and the access network device is smaller than 0, the flying platform moves to a position close to the terminal device quickly. Thereafter, when the terminal device accesses the access network device, the flying platform may have moved to a location that is closer to the terminal device. At this time, the distance between the terminal device and the flight platform is short, the transmitting power required by the terminal device to access the access network device is small, and the power consumption is small. Thus, the terminal device accesses the access network device.

In one possible design, the transmission parameter includes a distance; the preset conditions include: the distance between the terminal equipment and the access network equipment is smaller than or equal to the distance threshold value.

In the scheme, the distance between the terminal equipment and the access network equipment is smaller than or equal to the distance threshold value, and the distance between the terminal equipment and the flight platform is short, so that the transmitting power required by the terminal equipment when the terminal equipment is accessed to the access network equipment is small, and the power consumption is low.

In another possible design, the transmission parameter includes a distance; the preset conditions include: and the absolute value of the distance variation between the terminal equipment and the access network equipment in unit time is less than or equal to the distance threshold value.

In the scheme, the distance variation between the terminal equipment and the access network equipment in unit time is smaller than or equal to the distance threshold value, so that the distance between the terminal equipment and the flying platform is slowly changed. According to the common knowledge in the field, when the flying platform is close to the terminal equipment, the change between the flying platform and the terminal equipment is slow. Therefore, the distance between the terminal equipment and the flying platform is short. Therefore, the transmitting power required by the terminal equipment when the terminal equipment is accessed to the access network equipment is smaller, and the power consumption is smaller.

In yet another possible design, the transmission parameter includes a distance, and the distance threshold is 0; the preset conditions include: the distance variation between the terminal equipment and the access network equipment is less than 0.

In the scheme, the distance variation between the terminal device and the access network device is smaller than 0, which means that the distance between the terminal device and the flying platform tends to be closer and closer. Therefore, when the terminal equipment judges that the distance variation between the terminal equipment and the access network equipment is less than 0 and the distance between the terminal equipment and the flying platform tends to become closer, the flying platform can move to a position closer to the terminal equipment quickly. Thereafter, when the terminal device accesses the access network device, the flying platform may have moved to a location that is closer to the terminal device. At this time, the distance between the terminal device and the flight platform is short, and when the terminal device is accessed to the access network device, the required transmitting power is small, and the power consumption is small. Thus, the terminal device accesses the access network device.

In one possible design, the method further includes: and the terminal equipment determines that the preset condition is not met according to the transmission parameters and the reference information, and the terminal equipment periodically determines whether to access the access network equipment according to the reference information.

In a possible design, the transmission parameter further includes an uplink data amount, and the preset condition further includes: the uplink data volume of the terminal equipment is less than or equal to the data volume threshold value. The method further comprises the following steps: and if the terminal equipment determines that the uplink data volume is larger than the data volume threshold value, accessing the access network equipment.

In the scheme, when the uplink data volume of the terminal equipment is small, the terminal equipment is accessed to the access network equipment when the distance between the terminal equipment and the flying platform is short, so that the power consumption caused by the fact that the access network equipment needs to use large transmitting power when the distance between the terminal equipment and the flying platform is long is avoided; when the uplink data volume of the terminal equipment is large, the terminal equipment is directly accessed, and extra energy consumption and complexity caused by replacement of a flight platform in the transmission process are avoided.

In one possible design, the determining, by the terminal device, the access network device includes at least one of: the terminal equipment determines to send a random access lead code to the access network equipment; the terminal equipment determines to initiate a random access process to the access network equipment; the terminal equipment determines to send uplink transmission data to the access network equipment; and the access layer of the terminal equipment indicates the non-access layer to carry out uplink transmission.

In one possible design, the method further includes: and the terminal equipment receives first capability indication information from the access network equipment, wherein the first capability indication information is used for indicating the terminal equipment to access the access network equipment according to the transmission parameters and the reference information.

In another possible design, the method further includes: the terminal equipment receives second capability indication information from the access network equipment, wherein the second capability indication information is used for indicating the terminal equipment to access the access network equipment according to the transmission parameters and the reference information when the terminal equipment executes the first service; the method for accessing the access network equipment by the terminal equipment when the terminal equipment meets the preset conditions according to the transmission parameters and the reference information comprises the following steps: and the terminal equipment accesses the access network equipment according to the transmission parameters and the reference information when executing the first service.

In this scheme, the terminal device can determine that the terminal device itself has the capability of accessing the network by using the method of the embodiment of the present application by receiving the first capability indication information or the second capability indication information.

In one possible design, the method includes: the terminal device receives the reference information from the access network device. That is, the reference information may be configured by the access network device. In addition, the reference information may also be preset information in the terminal device.

On the other hand, an embodiment of the present application provides an access method, including: the access network equipment sends capability indication information to the terminal equipment, wherein the capability indication information comprises first capability indication information or second capability indication information, and the first indication information is used for indicating the terminal equipment to access the access network equipment according to the transmission parameters and the reference information; the second capability indication information is used for indicating the terminal equipment to access the access network equipment according to the transmission parameters and the reference information when executing the first service; and the access network equipment sends reference information to the terminal equipment, wherein the reference information comprises a reference value of a transmission parameter between the access network equipment and the terminal equipment.

In another aspect, the present application provides a communication device including a transceiver module and a processing module. Wherein, the transceiver module is used for: acquiring transmission parameters between the access network equipment and the access network equipment; the processing module is used for: and accessing the access network equipment when the transmission parameters and the reference information meet the preset conditions, wherein the reference information comprises a threshold value corresponding to the transmission parameters.

In one possible design, the reference information includes one or more of a channel parameter threshold, a doppler shift threshold, or a distance threshold between the communication device and the access network equipment.

In one possible design, the transmission parameters include channel parameters; the preset conditions include: the channel parameter is greater than or equal to a channel parameter threshold value.

In another possible design, the transmission parameters include channel parameters; the preset conditions include: the absolute value of the variation of the channel parameter per unit time is less than or equal to the channel parameter threshold value.

In yet another possible design, the transmission parameter includes a channel parameter, and the channel parameter threshold is 0; the preset conditions include: the variation of the channel parameter per unit time is greater than 0.

In one possible design, the transmission parameter includes a doppler shift, and a threshold value of the doppler shift is 0; the preset conditions include: the doppler shift is less than 0.

In one possible design, the transmission parameter includes a distance; the preset conditions include: the distance is less than or equal to the distance threshold value.

In another possible design, the transmission parameter includes a distance, and the preset condition includes: the amount of change in the distance per unit time is less than or equal to the distance threshold.

In yet another possible design, the transmission parameter includes a distance, and the distance threshold is 0; the preset conditions include: the variation of the distance is less than 0.

In one possible design, the processing module is further to: and when the transmission parameters and the reference information are determined not to meet the preset conditions, periodically determining whether to access the access network equipment according to the reference information.

In one possible design, the transmission parameters further include an amount of uplink data; the preset conditions further include: the uplink data volume is less than or equal to the data volume threshold value.

In one possible design, the processing module is further to: and if the uplink data volume is determined to be larger than the data volume threshold value, accessing the access network equipment.

In one possible design, the transceiver module is further configured to: and receiving first capability indication information from the access network equipment, wherein the first capability indication information is used for indicating the communication device to access the access network equipment according to the transmission parameters and the reference information.

In another possible design, the transceiver module is further configured to: receiving second capability indication information from the access network equipment, wherein the second capability indication information is used for indicating the communication device to access the access network equipment according to the transmission parameters and the reference information when executing the first service; the processing module is further configured to: and accessing the access network equipment according to the transmission parameters and the reference information when the first service is executed.

In one possible design, the transceiver module is further configured to: reference information is received from an access network device.

In another aspect, the present application provides a communication device including a transceiver module and a processing module. Wherein the processing module is configured to: and sending capability indication information to the terminal equipment through the transceiver module, wherein the capability indication information comprises first capability indication information or second capability indication information. The first capability indication information is used for indicating the terminal equipment to access the communication device according to the transmission parameters and the reference information; the second capability indication information is used for indicating the terminal equipment to access the communication device according to the transmission parameters and the reference information when executing the first service; the processing module is further configured to: and sending reference information to the terminal equipment through the transceiving module, wherein the reference information comprises a reference value of a transmission parameter between the communication device and the terminal equipment.

In yet another aspect, the present application provides a communication apparatus comprising: a processor and a memory; the memory is configured to store computer instructions that, when executed by the processor, cause the communication device to perform the method of any of the possible designs of any of the above aspects.

In yet another aspect, embodiments of the present application provide a communication system, which may include a terminal device and an access network device. The devices in the communication system may perform the method of any one of the possible designs of any one of the above aspects.

Any one of the above-provided apparatuses, computer storage media, computer program products, chips, or communication systems is configured to execute the above-provided corresponding methods, and therefore, the beneficial effects that can be achieved by the apparatuses, the computer storage media, the computer program products, the chips, or the communication systems can refer to the beneficial effects of the corresponding schemes in the above-provided corresponding methods, and are not described herein again.

These and other aspects of the present application will be more readily apparent from the following description of the embodiments.

Drawings

Fig. 1 is a schematic diagram of an NTN communication system according to an embodiment of the present application;

fig. 2 is a schematic hardware structure diagram of a communication device according to an embodiment of the present disclosure;

fig. 3A is a schematic diagram of a communication architecture based on platform transparent transmission according to an embodiment of the present disclosure;

fig. 3B is a schematic diagram of a communication architecture based on a flight platform access network device according to an embodiment of the present application;

fig. 3C is a schematic diagram of a communication architecture based on a distributed unit flight platform according to an embodiment of the present application;

fig. 4 is a flowchart of a low power access method according to an embodiment of the present application;

fig. 5 is a schematic diagram of a gNB moving with a flight platform according to an embodiment of the present disclosure;

fig. 6 is a schematic diagram of another access method provided in the embodiment of the present application;

fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention.

In the description of the embodiments herein, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more than two.

In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present embodiment, "a plurality" means two or more unless otherwise specified.

The access method provided by the embodiment of the application can be applied to a communication system, and the communication system can comprise a data network, a gateway, an access network device, a terminal device and other devices.

The terminal device is an entity for receiving signals, or transmitting signals, or receiving signals and transmitting signals at the user side. The terminal equipment may also be referred to as User Equipment (UE), a terminal, access terminal equipment, a subscriber unit, a subscriber station, a mobile station, a remote station, remote terminal equipment, a mobile device, user terminal equipment, a wireless communication device, a user agent, or a user device. The terminal equipment can be an electric meter, a water meter and the like. The terminal device may also be a V2X device, such as a smart car (smart car or interactive car), a digital car (digital car), an unmanned car (unmanned car or driver car or pilot car or automatic car), an automatic car (self-driving car or automatic car), a pure electric car (pure EV or Battery EV), a hybrid electric car (HEV), a Range Extended EV (REEV), a plug-in hybrid HEV (PHEV), a new energy vehicle (new energy vehicle), a roadside unit (RSU). The terminal device may also be a B2C device or a B2B device, etc. In addition, the terminal device in this embodiment may also be a Mobile Station (MS), a subscriber unit (subscriber unit), an unmanned aerial vehicle, an internet of things (IoT) device, a Station (ST) in a WLAN, a cellular phone (cellular phone), a smart phone (smart phone), a wireless phone, a wireless data card, a tablet computer, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a laptop computer (laptop computer), an AR device, a VR device, or a Machine Type Communication (MTC) terminal device. The terminal device may also be a handheld device, a computing device, or other processing device connected to a wireless modem, a vehicle mounted device, or a wearable device, etc., having wireless communication capabilities.

Radio Access Network (RAN) equipment is equipment that provides a terminal device with a wireless communication function. Access network equipment includes, for example but not limited to: next generation base station (gndeb, gNB), evolved node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), home base station (e.g., home evolved node B, or home node B, HNB), Base Band Unit (BBU), transmission point (TRP), Transmission Point (TP), mobile switching center, etc. in 5G.

Exemplarily, fig. 2 shows a hardware structure diagram of a communication apparatus provided in an embodiment of the present application. The communication device 200 includes a processor 201, a communication line 202, a memory 203, and at least one communication interface (fig. 2 is only exemplary and includes a communication interface 204).

The processor 201 may be a general processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more ics for controlling the execution of programs in accordance with the present invention.

The communication link 202 may include a path for transmitting information between the aforementioned components.

The communication interface 204 may be any device, such as a transceiver, for communicating with other devices or communication networks, such as an ethernet, a Radio Access Network (RAN), a Wireless Local Area Network (WLAN), etc.

The memory 203 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to these. The memory may be separate and coupled to the processor via communication line 202. The memory may also be integral to the processor.

The memory 203 is used for storing computer execution instructions for executing the scheme of the application, and is controlled by the processor 201 to execute. The processor 201 is configured to execute computer-executable instructions stored in the memory 203, thereby implementing the access method provided by the following embodiments of the present application.

Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

In particular implementations, processor 201 may include one or more CPUs such as CPU0 and CPU1 in fig. 2, for example, as one embodiment.

In particular implementations, communication apparatus 200 may include multiple processors, such as processor 201 and processor 208 in fig. 2, for example, as an example. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

In one implementation, the communications apparatus 200 may further include an output device 205 and an input device 206. The output device 205 is in communication with the processor 201 and may display information in a variety of ways. For example, the output device 205 may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. The input device 206 is in communication with the processor 201 and may receive user input in a variety of ways. For example, the input device 206 may be a mouse, a keyboard, a touch screen device, or a sensing device, among others.

The communication apparatus 200 may be a general-purpose device or a special-purpose device. In a specific implementation, the communication apparatus 200 may be a desktop computer, a portable computer, a network server, a Personal Digital Assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or a device with a similar structure as in fig. 2. The embodiment of the present application does not limit the type of the communication apparatus 200.

In some embodiments, the communication distance between the access network device and the terminal device may vary. For example, the communication system may be an NTN communication system as shown in fig. 1. The NTN communication system may also include a flight platform.

Wherein, the flight platform can be aircrafts such as satellites, unmanned planes and the like. The flight platform may connect to an access network device, so as to provide a transmission/reception point (TRP) for wireless access to the terminal device. The flight platform may also mount access network devices thereon, so that the terminal device communicates with the core network through the access network devices, or may also mount the access network devices on the flight platform in a distributed manner based on Distributed Units (DUs).

Three communication architectures of the NTN communication system are described below by taking an example in which the flying platform is a satellite and the access network device is a base station.

If the satellite is connected to a base station to provide a receiving/transmitting point for the terminal device to access wirelessly, the NTN communication system may be a communication architecture as shown in fig. 3A. In the communication architecture based on satellite transparent transmission shown in fig. 3A, a satellite is connected to a base station. The base station can be arranged on the ground, and the base station and the terminal equipment are communicated through satellite retransmission signals.

If the satellite has a base station mounted thereon, the NTN communication system may be a communication architecture as shown in fig. 3B. In the communication architecture based on the satellite base station shown in fig. 3B, the base station is mounted on a satellite. Therefore, the base station and the satellite move synchronously, and the base station and the satellite can be regarded as a whole.

In addition, if the base station is configured based on distributed units, the NTN communication system may be a communication architecture as shown in fig. 3C. In the communication architecture based on the distributed unit satellite shown in fig. 3C, the base station is partially mounted on the satellite based on the distributed unit. The communication mechanism of fig. 3C may be considered a specific example of the communication architecture shown in fig. 3B.

The access method in the embodiment of the present application may be applied to the communication architecture described above. The flying platform may include a low earth orbit satellite, a medium earth orbit satellite, a geosynchronous orbit satellite, an unmanned flying system platform, a high earth orbit satellite, depending on the altitude of the flying platform. Table 1 shows the height ranges, tracks and coverage for the different platform types described above.

TABLE 1

Based on the geosynchronous orbit NTN and the communication parameters based on the low orbit NTN shown in table 2, it can be seen that the maximum communication distance between the flight platform and the terminal device is much greater than the minimum communication distance according to different orbit types of the flight platform.

TABLE 2

In the prior art, because the difference between the maximum communication distance and the minimum communication distance between the terminal device and the flight platform is large, when the terminal device and the flight platform communicate at the maximum communication distance, large transmission power needs to be used, resulting in large power consumption.

In order to reduce power consumption, in the access method of the embodiment of the application, when the distance between the terminal device and the flying platform is long, the terminal device does not access the access network device because large transmission power is required to communicate. And the terminal equipment is not accessed to the access network equipment until the terminal equipment detects that the distance between the terminal equipment and the flying platform is short and meets the preset condition in the access method of the embodiment of the application. Therefore, the terminal equipment is accessed to the access network equipment only when the distance between the terminal equipment and the flying platform is short, and the power consumption caused by the fact that the access network equipment needs to use large transmitting power when the distance between the terminal equipment and the flying platform is long is avoided.

Exemplarily, as shown in fig. 4, a low power access method provided in an embodiment of the present application may include:

401. and the access network equipment sends the capability indication information to the terminal equipment.

For example, the access network device may be a gNB in the NTN, or may be another access network device, which is not particularly limited herein.

Wherein the capability indication information may be any one of the following capability indication information:

the first capability indication information may also be referred to as explicit indication information. The first capability indication information is used for indicating the terminal equipment to access the access network equipment according to the transmission parameters and the reference information between the terminal equipment and the access network equipment. That is, when the capability indication information is the first capability indication information, the terminal device may determine that it has the capability to access the access network device using the method described in the following procedure of the embodiment of the present application.

The second capability indication information may also be referred to as implicit indication information. And the second capability indication information is used for indicating the terminal equipment to access the access network equipment according to the transmission parameters and the reference information between the terminal equipment and the access network equipment when the terminal equipment executes the first service. Wherein the first service is a delay tolerant service. That is to say, when the capability indication information is the second capability indication information, and the terminal device executes the first service, for example, a delay-tolerant service, the terminal device accesses the access network device by using the method described in the following process of the embodiment of the present application.

Accordingly, the terminal device receives the capability indication information from the access network device.

It should be noted that the purpose of step 401 is to indicate that the terminal device has the capability of determining whether to access the access network device according to the transmission parameter and the reference information by using the access method in the embodiment of the present application.

In the embodiment of the present application, the time when the access network device sends the capability indication information to the terminal device is not limited. For example, step 401 may occur only once before the terminal device accesses the access network device, and after determining that the terminal device has the capability of determining whether to access the network device according to the transmission parameters and the reference information by using the access method in the embodiment of the present application, the terminal device does not need to repeat the above steps when accessing the access network device again. Step 401 may also occur once before each access of the access network device by the terminal device.

Further, in the embodiment of the present application, step 401 is optional. That is, the access network device sending the capability indication information to the terminal device is not a necessary step in the access method in the embodiment of the present application.

402. The terminal equipment acquires transmission parameters between the terminal equipment and the access network equipment.

Illustratively, the transmission parameter may include at least one of a channel parameter between the terminal device and the access network device, a doppler shift between the terminal device and the access network device, or a distance between the terminal device and the access network device, etc.

In the embodiment of the present application, the channel parameter may include at least one of Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), signal to interference noise ratio (SINR), signal to noise ratio (SNR), or the like.

It can be understood that, if the transmission parameter is a channel parameter, the larger the channel parameter value is, the stronger the signal strength between the terminal device and the access network device is, that is, the closer the communication distance between the terminal device and the access network device is; conversely, the smaller the channel parameter value is, the weaker the signal strength between the terminal device and the access network device is, that is, the longer the communication distance between the terminal device and the access network device is. If the transmission parameter is Doppler frequency shift, the Doppler frequency shift is smaller than 0, which indicates that the communication distance between the terminal equipment and the access network equipment is closer and closer; conversely, the doppler shift is greater than or equal to 0, which indicates that the communication distance between the terminal device and the access network device is longer and longer.

Optionally, the terminal device may obtain the transmission parameter from the access network device, for example, the terminal device may obtain the transmission parameter by measuring a reference signal sent by the access network device, where the reference signal may include at least one of the following: cell-specific reference signal (CRS), Synchronization Signal Block (SSB), and channel state reference signal (CSI-RS); alternatively, the terminal device may obtain the transmission parameter according to the system information sent by the access network device. The embodiment of the present application does not limit the specific manner in which the terminal device acquires the transmission parameters.

403. And the terminal equipment judges whether the access network equipment can be accessed according to the transmission parameters and the reference information. Then, the terminal device executes step 404a or step 404 b.

Optionally, the terminal device may periodically transmit the parameter and the reference information to determine whether the access network device may be accessed.

Wherein the reference information comprises threshold values of the transmission parameters. In the embodiment of the present application, the terminal device may acquire the reference information in a plurality of ways.

Optionally, the reference information may be reference information sent by the access network device to the terminal device. For example, the reference information sent by the access network to the terminal device may correspond to the transmission parameter, and the reference information includes at least one of a channel parameter threshold between the terminal device and the access network device, a doppler shift threshold between the terminal device and the access network device, and a distance threshold between the terminal device and the access network device.

Optionally, the reference information may also be preset information of the terminal device. The preset information may be manually set or agreed upon. In the embodiment of the present application, the manner of setting the preset information of the terminal device is not limited.

It should be noted that the channel parameter threshold may be a threshold of a channel parameter value, or may be a threshold of a channel parameter variation. The distance threshold may be a threshold of a distance value or a threshold of a distance change amount. The doppler shift threshold is typically 0.

404a, the terminal device accesses the access network device when the terminal device determines that the preset condition is met according to the transmission parameter and the reference information.

Specifically, the access network device is accessed when the terminal device determines that the preset condition is met, and the access network device comprises at least one of the following items: the terminal equipment determines that a random access lead code can be sent to the access network equipment; the terminal equipment determines that a random access process can be initiated to the access network equipment; the terminal equipment determines that uplink transmission can be sent to the access network equipment; the access stratum of the terminal equipment indicates to the non-access stratum that uplink transmission can be carried out. That is, the terminal device may specifically trigger the access network devices to access these procedures.

As can be seen from the above, the transmission parameter may include at least one of a channel parameter between the terminal device and the access network device, a doppler shift between the terminal device and the access network device, or a distance between the terminal device and the access network device. Correspondingly, the reference information may include at least one of a channel parameter threshold between the terminal device and the access network device, a doppler shift threshold between the terminal device and the access network device, and a distance threshold between the terminal device and the access network device. And when the transmission parameters are different, the preset conditions are also different. The preset conditions corresponding to the above three kinds of reference information are further described below.

Scheme 1

When the transmission parameter is a channel parameter between the terminal device and the access network device, the corresponding reference information is a channel parameter threshold between the terminal device and the access network device. In this case, the preset condition includes at least one of:

(1) the channel parameter between the terminal equipment and the access network equipment is greater than or equal to the channel parameter threshold value;

(2) the channel parameter variation between the terminal equipment and the access network equipment in unit time is greater than 0, and here, the channel parameter threshold value is 0;

(3) and the absolute value of the channel parameter variation between the terminal equipment and the access network equipment in unit time is less than or equal to the channel parameter threshold value.

In the following, with reference to fig. 5, a terminal device is taken as a UE, and an access network device is taken as a gNB, which will be described in detail. In fig. 5, taking the communication architecture shown in fig. 3B as an example, the gNB moves with the flight platform from position 1 to position 3 via position 2.

For example, assume that the preset conditions are: and the channel parameter between the terminal equipment and the access network equipment is greater than or equal to the channel parameter threshold value.

Referring to fig. 5, when the gNB moves with the flight platform to position 1, the channel parameter is M1, when the gNB moves with the flight platform to position 2, the channel parameter is M2, and when the gNB moves with the flight platform to position 3, the channel parameter is M3. Wherein M2 is greater than the channel parameter threshold, and M1 and M3 are less than the channel parameter threshold.

When the gNB moves from the position 1 to the position 3 via the position 2 along with the flight platform, at the position 1, the M1 is smaller than the channel parameter threshold value and does not satisfy the preset condition, so that the UE does not access the gNB. Specifically, since M1 is smaller than the channel parameter threshold, the signal strength between the UE and the gNB is small. It follows that the distance between the UE and the gNB is relatively long. And when the distance between the UE and the gNB is long, the transmit power used by the UE to access the gNB is large, and the power consumption is large. Therefore, to reduce power consumption, at location 1, the terminal device does not access the gNB.

In position 2, M2 is greater than the channel parameter threshold, and satisfies the preset condition, so the UE accesses the gNB. Specifically, since M2 is greater than the channel parameter threshold value, which indicates that the signal strength between the UE and the gNB is greater, it can be concluded that the distance between the UE and the gNB is closer. And when the distance between the UE and the gNB is short, the transmitting power used by the UE for accessing the gNB is small, and the power consumption is small. Thus, at location 2, the terminal device accesses the gNB.

Similarly, at position 3, M3 is smaller than the channel parameter threshold, and does not satisfy the preset condition, so the UE does not access the gNB.

In another embodiment, the above method can also be applied in the communication architecture shown in fig. 3A. In this communication architecture, the flight platform functions as a repeater. If the terminal device determines that the channel parameter between the terminal device and the access network device is greater than or equal to the channel parameter threshold value at a certain position, it indicates that the signal between the terminal device and the access network device is strong. In this scenario, the flight platform transparently transmits signals between the terminal device and the access network device, and the terminal device determines transmission parameters according to the signals transparently transmitted from the flight platform. Therefore, if the terminal device determines that the signal transmitted through the flying platform is strong, the distance between the flying platform and the terminal device is short. It follows that at this position the distance between the terminal device and the flight platform is relatively short. At this time, the transmitting power used by the terminal device accessing the access network device is smaller, and the power consumption is smaller. Thus, at this location, the terminal device accesses the access network device. On the contrary, if the terminal device determines that the channel parameter between the terminal device and the access network device is smaller than the channel parameter threshold value at a certain position, it can be obtained that the terminal device is far away from the flight platform. At this time, the transmission power used by the terminal device accessing the access network device is large, and the power consumption is large. Thus, at this location, the terminal device does not access the access network device.

For example, assume that the preset conditions are: the variation of the channel parameter between the terminal device and the access network device in unit time is greater than 0, and here, the threshold value of the channel parameter is 0. Wherein the channel parameter variation indicates a variation of the channel parameter per unit time.

Referring to fig. 5, the communication architecture shown in fig. 3B is taken as an example. When the gNB moves from the position 1 to the position 4 along with the flight platform, the UE determines that the variation of the channel parameter in the unit time is greater than 0. At this time, the UE accesses the gNB when a preset condition is satisfied. Specifically, the variation of the channel parameter in unit time is greater than 0, which indicates that the channel parameter value is larger and larger, and the signal strength tends to become larger and larger. That is, the distance between the UE and the gNB tends to become closer and closer. Since the moving speed of the flight platform is very fast, it can be considered that when the UE determines that the distance between the UE and the gNB tends to become closer and closer according to the fact that the variation of the channel parameter is greater than 0 in the unit time, the gNB may quickly move to a position closer to the terminal device along with the flight platform. Thereafter, when the UE accesses the access network device, the gNB may have moved with the flight platform to a position closer to the UE. At this time, the distance between the UE and the gNB is short, the transmit power required for the UE to access the gNB is small, and the power consumption is small. Thus, the UE accesses the gNB.

In contrast, referring to fig. 5, when the gNB moves from position 2 to position 5 along with the movement of the flying platform, the UE determines that the variation of the channel parameter per unit time is less than 0 at this time. At this time, the preset condition is not satisfied, and thus the UE does not access the gNB. Specifically, the variation of the channel parameter per unit time is less than or equal to 0, which indicates that the channel parameter value is not larger and larger, and the signal strength does not tend to become larger and larger. For example, if the UE determines that the amount of variation of the channel parameter per unit time is less than 0, the UE tends to move farther away from the gNB. Since the moving speed of the flying platform is very fast, it can be considered that after the UE determines that the distance between the UE and the gNB tends to become farther and farther according to the fact that the channel parameter variation is smaller than 0 in unit time, when the UE accesses the access network device, the gNB has moved to a position far from the UE along with the flying platform. At this time, the distance between the UE and the gNB is long, and the UE needs a large transmission power to access the gNB, which results in large power consumption. Therefore, the UE does not access the gNB.

In another embodiment, the above method can also be applied in the communication architecture shown in fig. 3A. In this communication architecture, the flight platform functions as a repeater. If the terminal device determines that the variation of the channel parameter between the terminal device and the access network device in a unit time is greater than 0 at a certain position, the signal strength between the terminal device and the access network device tends to become larger and larger. In this scenario, the flight platform transparently transmits signals between the terminal device and the access network device, and the terminal device determines transmission parameters according to the signals transparently transmitted from the flight platform. Therefore, if the terminal device determines that the signal transmitted through the flying platform is strong, the distance between the flying platform and the terminal device is short. It can be seen that at this location, the distance between the terminal device and the flight platform tends to become closer and closer. Since the moving speed of the flying platform is very fast, it can be considered that when the terminal device determines that the distance between the terminal device and the flying platform tends to become closer and closer according to the fact that the variation of the channel parameter in unit time is greater than 0, the flying platform may move to a position closer to the terminal device quickly. At this time, the transmitting power used by the terminal device accessing the access network device is smaller, and the power consumption is smaller. Thus, at this location, the terminal device accesses the access network device. On the contrary, if the terminal device determines that the channel parameter variation between the terminal device and the access network device in a certain position in a unit time is not greater than 0, the transmitting power used by the terminal device to access the access network device is larger, and the power consumption is larger. Thus, at this location, the terminal device does not access the access network device.

For example, assume that the preset conditions are: and the absolute value of the channel parameter variation between the terminal equipment and the access network equipment in unit time is less than or equal to the channel parameter threshold value. Assuming that the UE is located within the coverage of the flying platform, and taking the location of the UE at a certain time as a reference point, according to common general knowledge in the art, when the flying platform is far from the reference point, the distance between the flying platform and the reference point changes rapidly. When the flying platform is closer to the reference point, the distance between the flying platform and the reference point changes slowly. That is, when the flying platform is far away from the UE, the distance between the flying platform and the UE changes faster. When the flying platform is close to the UE, the distance between the flying platform and the UE changes slowly.

Referring to fig. 5, the communication architecture shown in fig. 3B is taken as an example. In the process that the gNB moves from the position 1 to the position 3 via the position 2 along with the movement of the flight platform, when the gNB moves to the position 2 along with the movement of the flight platform, the UE determines that the absolute value of the channel parameter variation in the unit time at the moment is less than or equal to the channel parameter threshold value. At this time, the UE accesses the gNB when a preset condition is satisfied. Specifically, the absolute value of the channel parameter variation in the unit time is smaller than or equal to the channel parameter threshold, which indicates that the channel parameter variation is slow at this time. That is, the distance between the UE and the gNB on the flight platform changes slowly, i.e., the distance between the UE and the flight platform is relatively stable. It can be inferred from the common knowledge that the flight platform is closer to the UE. That is, the UE is closer to the gNB on the flight platform. When the distance between the UE and the gNB is short, the UE needs less transmission power for accessing the gNB, and the power consumption is less. Thus, the UE accesses the gNB.

On the contrary, when the gNB moves to the position 1 or the position 3 along with the flight platform, the UE determines that the absolute value of the channel parameter variation in the unit time at this time is greater than the channel parameter threshold value. At this time, the preset condition is not met, and the UE does not access the gNB. Specifically, the channel parameter variation in unit time is greater than the channel parameter threshold, which indicates that the channel parameter variation is fast at this time. That is, the distance between the UE and the gNB on the flight platform changes rapidly, i.e., the distance between the UE and the flight platform is relatively unstable. It can be inferred from the common knowledge that the flying platform is far away from the UE. That is, the UE is far away from the gNB on the flight platform. When the distance between the UE and the gNB is long, the UE needs a large transmission power to access the gNB, and power consumption is large. Therefore, the UE does not access the gNB.

In another embodiment, the above method can also be applied in the communication architecture shown in fig. 3A. In this communication architecture, the flight platform functions as a repeater. If the terminal device determines that the absolute value of the channel parameter variation between the terminal device and the access network device in unit time is smaller than or equal to the channel parameter threshold value at a certain position, it indicates that the signal strength variation between the terminal device and the access network device is slow. In this scenario, the flight platform transparently transmits signals between the terminal device and the access network device, and the terminal device determines transmission parameters according to the signals transparently transmitted from the flight platform. Therefore, if the terminal device determines that the signal transmitted through the flying platform is strong, the distance between the flying platform and the terminal device is short. It can be seen that, at this position, the distance between the terminal device and the flight platform changes slowly and is relatively stable. According to the common knowledge, it can be inferred that the flight platform is closer to the terminal equipment. At this time, the transmitting power used by the terminal device accessing the access network device is smaller, and the power consumption is smaller. Thus, at this location, the terminal device accesses the access network device. On the contrary, if the absolute value of the channel parameter variation between the terminal device and the access network device in unit time is determined to be larger than the channel parameter threshold value at a certain position, the transmitting power used by the terminal device to access the access network device is larger, and the power consumption is larger. Thus, at this location, the terminal device does not access the access network device.

In scheme 1, the terminal device determines whether to access according to the channel parameters. If the predetermined condition includes at least one of: the channel parameter between the terminal equipment and the access network equipment is greater than or equal to the channel parameter threshold value; or the channel parameter variation between the terminal equipment and the access network equipment in unit time is greater than 0, and the channel parameter threshold value is 0; or, when the absolute value of the channel parameter variation between the terminal device and the access network device in unit time is less than or equal to the channel parameter threshold, it indicates that the distance between the terminal device and the flight platform is short. And when the distance between the terminal equipment and the flying platform is short, the terminal equipment is accessed to the access network equipment. Therefore, power consumption caused by the fact that the access network equipment needs to use larger transmitting power when the distance between the terminal equipment and the flying platform is longer is avoided.

Optionally, the preset condition may include any two or three of the above three preset conditions.

For example, when the preset condition includes a combination of the preset condition (1) and the preset condition (2), the channel parameter between the terminal device and the access network device is greater than or equal to the channel parameter threshold; meanwhile, when the channel parameter variation between the terminal equipment and the access network equipment in unit time is greater than 0, the terminal equipment is accessed to the access network equipment. This is because, when the preset condition (1) and the preset condition (2) are satisfied at the same time, it is indicated that the distance between the terminal device and the flight platform is closer, and the distance between the terminal device and the flight platform tends to become closer and closer. Therefore, when the terminal equipment is close to the flying platform, the terminal equipment is accessed to the access network equipment, and therefore power consumption can be effectively reduced.

In addition, the preset condition may include a combination of the preset condition (1) and the preset condition (3), and may further include a combination of the preset condition (1), the preset condition (2), and the preset condition (3). Through the combination of a plurality of preset conditions, the terminal equipment can be accessed to the access network equipment when the distance between the terminal equipment and the flight platform is short, so that the power consumption is effectively reduced, and the power consumption caused by the fact that the access network equipment needs to use large transmitting power when the terminal equipment is far away from the flight platform is avoided.

Scheme 2

When the transmission parameter is the doppler shift between the terminal device and the access network device, the corresponding reference information is the doppler shift threshold between the terminal device and the access network device. In this case, the preset conditions include: the doppler shift between the terminal device and the access network device is less than 0, and here, the threshold value of the doppler shift is 0.

In the following, a detailed description is given by taking a terminal device as a UE and an access network device as a gNB.

For example, assume that the preset conditions are: the doppler shift between the terminal device and the access network device is less than 0, and here, the threshold value of the doppler shift is 0.

Referring to fig. 5, the communication architecture shown in fig. 3B is taken as an example. When the gNB moves with the flight platform from location 1 to location 4, the UE determines a doppler shift F <0 at location 4, and when the gNB moves from location 2 to location 5, the UE determines a doppler shift F >0 at location 5. According to the common knowledge in the art, F <0 means that the UE is closer to the gNB, and F >0 means that the UE is further from the gNB.

Therefore, when the gNB moves to the position 4 along with the flight platform, the UE determines that F <0, and then the UE accesses the gNB if the preset condition is met. Specifically, F <0 indicates that the relative distance of the UE to the gNB is closer and closer. Since the flight platform moves very fast, when the UE accesses the access network device, the gNB may have moved with the flight platform to a position closer to the UE. At this time, the distance between the UE and the gNB is short, the transmit power required for the UE to access the gNB is small, and the power consumption is small. Thus, the UE accesses the gNB.

On the contrary, when the gNB moves to the position 5 along with the flight platform, the UE determines that F >0, the preset condition is not met, and the UE does not access the gNB. In particular, F >0, indicating that the UE is at increasingly greater relative distances from the gNB. Since the flying platform moves very fast, when the UE accesses the access network device, the gNB may have moved with the flying platform to a location that is far from the UE. At this time, the distance between the UE and the gNB is long, and the UE needs a large transmission power to access the gNB, which results in large power consumption. Therefore, the UE does not access the gNB.

In another embodiment, the above method can also be applied in the communication architecture shown in fig. 3A. In this communication architecture, the flying platform functions as a repeater, while the access network device is located on the ground. Thus, in this scenario, the doppler shift between the terminal device and the access network device essentially refers to the doppler shift between the terminal device and the flying platform. If the Doppler frequency shift between the terminal equipment and the access network equipment is determined to be less than 0 at a certain position, the fact that the distance between the terminal equipment and the flying platform at the position tends to be closer and closer is indicated. Since the flying platform moves at a very fast speed, it can be considered that the flying platform may move to a position closer to the terminal device when the terminal device accesses the access network device. At this time, the transmitting power used by the terminal device accessing the access network device is smaller, and the power consumption is smaller. Thus, at this location, the terminal device accesses the access network device. On the contrary, if the doppler frequency shift between the terminal device and the access network device is determined to be greater than 0 at a certain position, the transmission power used by the terminal device to access the access network device is relatively high, and the power consumption is relatively high. Thus, at this location, the terminal device does not access the access network device.

In scheme 2, the terminal device determines whether to access according to the doppler shift. And when the Doppler frequency shift between the terminal equipment and the access network equipment is less than 0, the terminal equipment is closer to the flying platform. At this time, the terminal device accesses the access network device. Therefore, power consumption caused by the fact that the access network equipment needs to use larger transmitting power when the distance between the terminal equipment and the flying platform is longer is avoided.

Scheme 3

When the transmission parameter is the distance between the terminal device and the access network device, the corresponding reference information is a distance threshold value between the terminal device and the access network device. In this case, the preset condition includes at least one of:

(1) the distance between the terminal equipment and the access network equipment is less than or equal to a distance threshold value;

(2) the distance variation between the terminal equipment and the access network equipment in unit time is less than 0, and here, the distance threshold value is 0;

(3) and the absolute value of the distance variation between the terminal equipment and the access network equipment in unit time is less than or equal to the distance threshold value.

In the following, a detailed description is given by taking a terminal device as a UE and an access network device as a gNB.

For example, assume that the preset conditions are: the distance between the terminal equipment and the access network equipment is smaller than or equal to the distance threshold value.

Referring to fig. 5, the communication architecture shown in fig. 3B is taken as an example. When the gNB moves to the position 1 along with the flight platform, the communication distance between the UE and the gNB is L1, when the gNB moves to the position 2 along with the flight platform, the communication distance between the UE and the gNB is L2, and when the gNB moves to the position 3 along with the flight platform, the communication distance between the UE and the gNB is L3. Wherein L2 is smaller than the distance threshold, and L1 and L3 are larger than the distance threshold.

When the gNB moves from the position 1 to the position 3 via the position 2 along with the flight platform, at the position 1, L1 is greater than the distance threshold value and does not satisfy the preset condition, so that the UE does not access the gNB. Specifically, L1 is greater than the distance threshold, indicating that the distance between the UE and the gNB is relatively long. And when the distance between the UE and the gNB is long, the transmit power used by the UE to access the gNB is large, and the power consumption is large. Therefore, to reduce power consumption, at location 1, the terminal device does not access the gNB.

At position 2, L2 is smaller than the distance threshold, and the preset condition is met, so the UE accesses the gNB. Specifically, since L2 is smaller than the distance threshold, it indicates that the distance between the UE and the gNB is short at this time. And when the distance between the UE and the gNB is short, the transmitting power used by the UE for accessing the gNB is small, and the power consumption is small. Thus, at location 2, the UE accesses the gbb.

Similarly, at position 3, L3 is greater than the distance threshold and does not satisfy the predetermined condition, and therefore, the UE does not access the gNB. In another embodiment, the above method can also be applied in the communication architecture shown in fig. 3A. In this communication architecture, the flight platform functions as a repeater. The distance may be a communication distance between the terminal device and the access network device, or a communication distance between the terminal device and the flight platform. For example, if the terminal device determines that the distance between the terminal device and the access network device is smaller than or equal to the distance threshold value at a certain position, it indicates that the signal between the terminal device and the access network device is strong. In this scenario, the flight platform transparently transmits signals between the terminal device and the access network device, and the terminal device determines transmission parameters according to the signals transparently transmitted from the flight platform. Therefore, if the terminal device determines that the signal transmitted through the flying platform is strong, the distance between the flying platform and the terminal device is short. It follows that at this position the distance between the terminal device and the flight platform is relatively short. At this time, the transmitting power used by the terminal device accessing the access network device is smaller, and the power consumption is smaller. Thus, at this location, the terminal device accesses the access network device. On the contrary, if the distance between the terminal device and the access network device is determined to be greater than the distance threshold value at a certain position, it can be obtained that the distance between the terminal device and the flying platform is longer. At this time, the transmission power used by the terminal device accessing the access network device is large, and the power consumption is large. Thus, at this location, the terminal device does not access the access network device.

For example, assume that the preset conditions are: the distance variation between the terminal device and the access network device in unit time is less than 0, and here, the distance threshold value is 0. Wherein the distance variation indicates a variation in distance per unit time.

Referring to fig. 5, the communication architecture shown in fig. 3B is taken as an example. When the gNB moves to the position 4 along with the flight platform, the UE determines that the distance variation in unit time at the moment is less than 0, the preset condition is met, and the UE accesses the gNB. Specifically, the distance variation in unit time is less than 0, which indicates that the distance between the UE and the gNB tends to become closer and closer. Since the moving speed of the flight platform is very fast, it can be considered that, after the UE determines that the distance between the UE and the gNB tends to become closer and closer according to the fact that the distance variation amount in unit time is smaller than 0, when the UE accesses the access network device, the gNB may have moved to a position closer to the UE along with the flight platform. At this time, the distance between the UE and the gNB is short, the transmit power required for the UE to access the gNB is small, and the power consumption is small. Thus, the UE accesses the gNB.

On the contrary, when the gNB moves from the position 2 to the position 5 along with the movement of the flight platform, the UE determines that the distance variation in unit time is greater than 0 at this time, and the preset condition is not satisfied, so that the UE does not access the gNB. Specifically, the distance variation per unit time is greater than or equal to 0, which indicates that the distance between the UE and the gNB does not tend to be closer and closer. For example, if the distance variation per unit time is greater than 0, it indicates that the distance between the UE and the gNB tends to be farther and farther. Since the moving speed of the flying platform is very fast, it can be considered that, after the UE determines that the distance between the UE and the gNB tends to become farther and farther according to the fact that the distance variation amount in unit time is greater than 0, when the UE accesses the access network device, the gNB may have moved to a position farther from the UE along with the flying platform. At this time, the distance between the UE and the gNB is long, and the UE needs a large transmission power to access the gNB, which results in large power consumption. Therefore, the UE does not access the gNB.

In another embodiment, the above method can also be applied in the communication architecture shown in fig. 3A. In this communication architecture, the flight platform functions as a repeater. The distance may be a communication distance between the terminal device and the access network device, or a communication distance between the terminal device and the flight platform. For example, if the terminal device determines that the variation of the distance between the terminal device and the access network device in a certain position in a unit time is less than 0, the terminal device indicates that the signal strength between the terminal device and the access network device tends to become larger and larger. In this scenario, the flight platform transparently transmits signals between the terminal device and the access network device, and the terminal device determines transmission parameters according to the signals transparently transmitted from the flight platform. Therefore, if the terminal device determines that the signal transmitted through the flying platform is strong, the distance between the flying platform and the terminal device is short. It can be seen that at this location, the distance between the terminal device and the flight platform tends to become closer and closer. Since the moving speed of the flying platform is very fast, it can be considered that when the terminal device determines that the distance variation per unit time is smaller than 0 and the distance between the terminal device and the flying platform tends to become closer, the flying platform may move to a position closer to the terminal device quickly. At this time, the transmitting power used by the terminal device accessing the access network device is smaller, and the power consumption is smaller. Thus, at this location, the terminal device accesses the access network device. On the contrary, if the distance variation between the terminal device and the access network device in a unit time is determined to be not less than 0 at a certain position, the transmitting power used by the terminal device to access the access network device is larger, and the power consumption is larger. Thus, at this location, the terminal device does not access the access network device.

For example, assume that the preset conditions are: and the absolute value of the distance variation between the terminal equipment and the access network equipment in unit time is less than or equal to the distance threshold value. Assuming that the UE is located within the coverage of the flying platform, and taking the location of the UE at a certain time as a reference point, according to common general knowledge in the art, when the flying platform is far from the earth, the moving speed is fast. In this way, the distance between the flying platform and the reference point changes faster. When the flying platform is close to the earth, the moving speed is low. In this way, the distance between the flying platform and the reference point varies slowly. That is, when the flying platform is far away from the UE, the distance between the flying platform and the UE changes faster. When the flying platform is close to the UE, the distance between the flying platform and the UE changes slowly.

Referring to fig. 5, the communication architecture shown in fig. 3B is taken as an example. In the process that the gNB moves from the position 1 to the position 3 via the position 2 along with the movement of the flight platform, when the gNB moves to the position 2 along with the movement of the flight platform, the UE determines that the absolute value of the distance variation in unit time at the moment is smaller than or equal to the distance threshold value. At this time, the UE accesses the gNB when a preset condition is satisfied. Specifically, the distance variation in unit time is smaller than or equal to the channel parameter threshold value, which indicates that the distance between the UE and the gNB on the flight platform changes slowly, i.e., the distance between the UE and the flight platform is relatively stable. It can be inferred from the common knowledge that the flight platform is closer to the UE. That is, the UE is closer to the gNB on the flight platform. When the distance between the UE and the gNB is short, the UE needs less transmission power for accessing the gNB, and the power consumption is less. Thus, the UE accesses the gNB.

On the contrary, when the gNB moves to the position 1 or the position 3 along with the flight platform, the UE determines that the absolute value of the distance variation in the unit time at this time is greater than the distance threshold value. And at this moment, the preset condition is not met, and the UE does not access the gNB. Specifically, the distance variation in unit time is greater than the channel parameter threshold value, which indicates that the distance between the UE and the gNB on the flight platform changes faster, i.e., the distance between the UE and the flight platform is relatively unstable. It can be inferred from the common knowledge that the flying platform is far away from the UE. That is, the UE is far away from the gNB on the flight platform. When the distance between the UE and the gNB is long, the UE needs a large transmission power to access the gNB, and power consumption is large. Therefore, the UE does not access the gNB.

In another embodiment, the above method can also be applied in the communication architecture shown in fig. 3A. In this communication architecture, the flight platform functions as a repeater. The distance may be a communication distance between the terminal device and the access network device, or a communication distance between the terminal device and the flight platform. For example, if the terminal device determines that the absolute value of the distance variation between the terminal device and the access network device in a unit time is smaller than or equal to the distance threshold value at a certain position, it indicates that the signal strength between the terminal device and the access network device changes slowly. In this scenario, the flight platform transparently transmits signals between the terminal device and the access network device, and the terminal device determines transmission parameters according to the signals transparently transmitted from the flight platform. Therefore, if the terminal device determines that the signal transmitted through the flying platform is strong, the distance between the flying platform and the terminal device is short. It can be seen that, at this position, the distance between the terminal device and the flight platform changes slowly and is relatively stable. According to the common knowledge, it can be inferred that the flight platform is closer to the terminal equipment. At this time, the transmitting power used by the terminal device accessing the access network device is smaller, and the power consumption is smaller. Thus, at this location, the terminal device accesses the access network device. On the contrary, if the terminal device determines that the absolute value of the distance variation between the terminal device and the access network device in unit time is greater than the distance threshold value at a certain position, the transmitting power used by the terminal device to access the access network device is greater, and the power consumption is greater. Thus, at this location, the terminal device does not access the access network device.

In scheme 3, the terminal device determines whether to access according to the distance. If the predetermined condition includes at least one of: the distance between the terminal equipment and the access network equipment is less than or equal to a distance threshold value; or the distance variation between the terminal equipment and the access network equipment in unit time is less than 0, and the distance threshold value is 0; or, when the absolute value of the distance variation between the terminal device and the access network device in unit time is less than or equal to the distance threshold value, it indicates that the distance between the terminal device and the flight platform is short. And when the distance between the terminal equipment and the flying platform is short, the terminal equipment is accessed to the access network equipment. Therefore, power consumption caused by the fact that the access network equipment needs to use larger transmitting power when the distance between the terminal equipment and the flying platform is longer is avoided.

Optionally, the preset condition may include any two or three of the above three preset conditions.

For example, when the preset condition includes a combination of the preset condition (1) and the preset condition (2), the distance between the terminal device and the access network device is less than or equal to a distance threshold value; meanwhile, when the distance variation between the terminal equipment and the access network equipment in unit time is less than 0, the terminal equipment is accessed to the access network equipment. This is because, when the preset condition (1) and the preset condition (2) are satisfied at the same time, it is indicated that the distance between the terminal device and the flight platform is closer, and the distance between the terminal device and the flight platform tends to become closer and closer. Therefore, when the terminal equipment is close to the flying platform, the terminal equipment is accessed to the access network equipment, and the power consumption can be effectively reduced.

In addition, the preset condition may include a combination of the preset condition (1) and the preset condition (3), and may further include a combination of the preset condition (1), the preset condition (2), and the preset condition (3). Through the combination of a plurality of preset conditions, the terminal equipment can be accessed to the access network equipment when the distance between the terminal equipment and the flight platform is short, so that the power consumption is effectively reduced, and the power consumption caused by the fact that the access network equipment needs to use large transmitting power when the terminal equipment is far away from the flight platform is avoided.

In other embodiments, the transmission parameters may include a combination of a plurality of channel parameters, doppler shift or distance, etc. between the terminal device and the access network device. Accordingly, the preset condition may include a plurality of the preset conditions in the above-described aspects 1 to 3.

For example, the transmission parameters may include channel parameters and doppler shift. Correspondingly, the preset conditions include: at least one of the preset conditions when the reference information is a channel parameter threshold value between the terminal device and the access network device, and the preset condition when the reference information is a doppler shift threshold value. For example, the preset condition may be: the channel parameter between the terminal equipment and the access network equipment is greater than or equal to the channel parameter threshold value, and the Doppler frequency shift between the terminal equipment and the access network equipment is less than 0. The fact that the channel parameter between the terminal device and the access network device is greater than or equal to the channel parameter threshold value can indicate that the terminal device is close to the flight platform. The fact that the Doppler frequency shift between the terminal device and the access network device is smaller than 0 can indicate that the distance between the terminal device and the flying platform is closer and closer. The combination of the two can further prove that the terminal equipment can access the access network equipment when the terminal equipment is close to the flying platform. Therefore, the power consumption is effectively reduced, and the power consumption caused by the fact that the terminal equipment is connected with the access network equipment and needs to use larger transmitting power when the terminal equipment is far away from the flight platform is avoided. In addition, other combinations of preset conditions exist, which are not listed individually herein.

As another example, the reference information may include channel parameters, doppler shift, and range. Correspondingly, the preset conditions include: at least one of preset conditions when the reference information is a channel parameter threshold value between the terminal device and the access network device, preset conditions when the reference information is a doppler shift threshold value, and at least one of preset conditions when the reference information is a distance threshold value between the terminal device and the access network device. For example, the preset condition may be: the variation of the channel parameter between the terminal equipment and the access network equipment in unit time is greater than 0, the Doppler frequency shift between the terminal equipment and the access network equipment is less than 0, and the distance between the terminal equipment and the access network equipment is less than or equal to a distance threshold value. Other combinations of corresponding predetermined conditions exist, which are not listed individually herein.

It will be appreciated that the combination of transmission parameters may take many forms. In the embodiment of the present application, the transmission parameter only needs to include one or more of a channel parameter, a doppler shift, or a distance between the terminal device and the access network device. In the embodiments of the present application, the combination form of the transmission parameters is not limited.

Through the combination of various transmission parameters, the terminal equipment can be further proved to be accessed to the access network equipment when the terminal equipment is close to the flying platform. Therefore, the power consumption is effectively reduced, and the power consumption caused by the fact that the terminal equipment is connected with the access network equipment and needs to use larger transmitting power when the terminal equipment is far away from the flight platform is avoided.

404b, when the terminal device determines that the preset condition is not met according to the transmission parameter and the reference information, the terminal device periodically executes step 402-403.

Specifically, when the terminal device determines that the preset condition is not met, the terminal device does not access the access network device, and the method includes at least one of the following steps: the terminal equipment determines that the random access lead code cannot be sent to the access network equipment; the terminal equipment determines that a random access process cannot be initiated to the access network equipment; the terminal equipment determines that uplink transmission cannot be sent to the access network equipment; and the access layer of the terminal equipment indicates that uplink transmission cannot be carried out to the non-access layer.

Wherein the period may be configured by the access network device. For example, the period may be carried in a system message sent by the access network device to the terminal device; alternatively, the period may be agreed upon by a protocol. In the embodiment of the present application, the acquisition mode of the period is not limited.

According to the access method in the embodiment of the application, when the distance between the terminal device and the flight platform is long, the terminal device does not access the access network device because large transmission power is needed for communication. And the terminal equipment is not accessed to the access network equipment until the terminal equipment detects that the distance between the terminal equipment and the flying platform is short and meets the preset condition in the access method of the application. Therefore, the terminal equipment is accessed to the access network equipment only when the distance between the terminal equipment and the flying platform is short, and the power consumption caused by the fact that the access network equipment needs to use large transmitting power when the distance between the terminal equipment and the flying platform is long is avoided.

Optionally, the transmission parameter may further include an uplink data amount. In the case that the transmission parameter further includes an uplink data volume, the embodiment of the present application may further provide an access method triggered by the data volume. The access method will be described in detail below with reference to fig. 6. In the access method:

the above step 402 may be replaced by:

402a, the terminal device obtains the transmission parameter between the terminal device and the access network device. The transmission parameters include one or more of channel parameters between the terminal device and the access network device, doppler shift between the terminal device and the access network device, or a distance between the terminal device and the access network device, and an uplink data volume.

In an embodiment of the access method, in step 403, the terminal device determines whether the access network device can be accessed according to the transmission parameter and the reference information, where the reference information may further include: a data volume threshold corresponding to the uplink data volume. Correspondingly, the preset conditions further include: the uplink data volume of the terminal equipment is less than or equal to the data volume threshold value.

Specifically, when the access method in this embodiment is executed, the step 403 may be replaced with:

501. the terminal equipment determines whether the uplink data volume is less than or equal to a data volume threshold value.

The transmission timing of the data amount threshold is not particularly limited. For example, the data amount threshold may be used as reference information and sent together with other reference information (for example, at least one of a channel parameter threshold between the terminal device and the access network device, a doppler shift threshold between the terminal device and the access network device, and a distance threshold between the terminal device and the access network device) sent by the access network device to the terminal device; alternatively, the data amount threshold may be transmitted separately from other reference information.

502a, when the terminal device determines that the uplink data amount is less than or equal to the data amount threshold value, at least one scheme of scheme 1, scheme 2 or scheme 3 in the step 404a or the step 404b is executed.

Specifically, the terminal device determines that the uplink data amount is smaller than or equal to the data amount threshold value, that is, the uplink data amount of the terminal device is smaller. When the uplink data volume of the terminal device is small, the time required for transmitting the data volume is short. If the terminal device selects the flight platform with a short access distance when starting to transmit data, when the time for transmitting data volume is short, the flight platform is considered to be still close to the terminal device, and the terminal device does not change the flight platform. Therefore, there is no additional energy consumption and complexity associated with replacing the flight platform during transport.

In this case, in order to reduce power consumption, the terminal device should access the access network device when it is close to the flying platform. Therefore, when the uplink data amount of the terminal device is less than or equal to the data amount threshold value, the terminal device executes at least one of the scheme 1, the scheme 2, or the scheme 3 in the step 404a according to the type of the acquired transmission parameter. That is to say, it is determined, by combining with other reference information (for example, a channel parameter threshold between the terminal device and the access network device, a doppler shift threshold between the terminal device and the access network device, and a distance threshold between the terminal device and the access network device), that the access network device is accessed only when the distance between the terminal device and the flight platform is short, so that power consumption caused by the fact that the access network device needs to use a large transmission power when the distance between the terminal device and the flight platform is long is avoided.

502b, when the terminal device determines that the uplink data volume is larger than the data volume threshold value, the access network device is accessed.

Specifically, when the uplink data amount of the terminal device is greater than the data amount threshold value, that is, the uplink data amount of the terminal device is large, the transmission time required for transmitting the large data amount is long. It is assumed that the terminal device selects the flying platform with a short access distance when starting to transmit data, however, the flying platform with a short access distance may move to a far position in a long transmission time due to the movement of the flying platform, and the replacement of the flying platform may occur. In such a case, the transmission power required for the terminal device to access the access network device becomes large, and the power consumption increases. Therefore, under the condition of large data volume and long transmission time, the terminal equipment waits for access when the distance between the terminal equipment and the flight platform is short, power consumption cannot be effectively reduced, and service time delay is increased.

Therefore, under the condition of large data volume, the terminal equipment does not need to wait until the terminal equipment is close to the flying platform to access the access network equipment. In order to avoid the problems of extra energy consumption and complexity caused by replacing the flight platform in the transmission process and even data loss, and to ensure the service timeliness to a certain extent, the terminal equipment is directly accessed to the access network equipment.

For example, if the access network device is mounted on a flying platform, when the access network device moves to a certain position along with the flying platform, the terminal device obtains the uplink data amount and distance between the terminal device and the access network device. At this time, if the terminal device determines that the uplink data amount is smaller than the data amount threshold, the terminal device may determine whether the access network device may be accessed according to the distance between the terminal device and the access network device and the distance threshold. Specifically, the terminal device may determine whether one or more preset conditions are satisfied when the transmission parameter is the distance between the terminal device and the access network device. If the terminal equipment meets the preset conditions according to the distance and the distance threshold value, accessing the access network equipment; if the terminal equipment determines that the preset condition is not met according to the distance and the distance threshold value, whether the preset condition is met is determined periodically according to the distance and the distance threshold value. In another embodiment, if the terminal device determines that the uplink data amount is greater than the data amount threshold value, the terminal device directly accesses the access network device.

According to the method, when the uplink data volume of the terminal equipment is small, the terminal equipment is accessed to the access network equipment when the distance between the terminal equipment and the flying platform is short, and power consumption caused by the fact that the access network equipment needs to use large transmitting power when the distance between the terminal equipment and the flying platform is long is avoided; when the uplink data volume of the terminal equipment is large, the terminal equipment is directly accessed, and extra energy consumption and complexity caused by replacement of a flight platform in the transmission process are avoided.

The above description mainly introduces the scheme provided in the embodiments of the present application from the perspective of interaction between communication devices. It is to be understood that, in order to implement the above functions, the terminal device or the access network device includes a hardware structure and/or a software module for performing the respective functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the communication apparatus may be divided into the functional modules according to the method example, for example, each functional module may be divided according to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

The method of the embodiment of the present application is mainly described above, and the communication apparatus provided in the embodiment of the present application for performing the method is described below. Those skilled in the art will appreciate that the methods and apparatuses may be combined and referred to one another, and the communication apparatus provided in the embodiments of the present application may perform the steps performed by the terminal device in the above-described access method.

For example, in the case where the functional modules are divided in an integrated manner, fig. 7 shows a schematic configuration diagram of a communication device 70. The communication device 70 includes: a transceiver module 701 and a processing module 702.

In some embodiments, the communication apparatus 70 is a terminal device or is located on a terminal device, and the transceiver module 701 may be used to support the communication apparatus 70 to perform step 401 and step 402 shown in fig. 4 in the above embodiments; as well as steps 401 and 402a shown in fig. 6, and/or other steps or functions performed by the terminal device in the above method embodiments. Thereby acquiring transmission parameters between the access network equipment and the access network equipment; and receiving the first capability indication information or the second capability indication information from the access network equipment.

The processing module 702 is configured to support the communication apparatus 70 to perform the steps 403, 404a, and 404b shown in fig. 4 in the above embodiment: as well as steps 501, 502a and 502b shown in fig. 6, and/or other steps or functions performed by the terminal device in the above method embodiments. Thereby enabling the communication device 70 to access the access network equipment in the proper practice.

In other embodiments, the communication device 70 is an access network device or is located on an access network device, and the processing module 702 is configured to: sending capability indication information to a terminal device through a transceiver module 701, where the capability indication information includes first capability indication information or second indication information, where the first capability indication information is used to indicate that the terminal device accesses the communication apparatus according to the transmission parameter and reference information; and the second capability indication information is used for indicating the terminal equipment to access the communication device according to the transmission parameters and the reference information when executing the first service. The transceiver module 701 and the processing module 702 are further used for supporting the communication device 70 to perform other steps or functions performed by the access network apparatus in the above method embodiment.

All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

In the embodiment of the present application, the communication device 70 is presented in a form of dividing each functional module in an integrated manner. A "module" herein may refer to a particular ASIC, a circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other device that provides the described functionality. In a simple embodiment, those skilled in the art will appreciate that the communication device 70 may take the form shown in FIG. 2.

For example, the processor 201 in fig. 2 may cause the communication apparatus 70 to perform the actions performed by the terminal device in the above-described method embodiment by calling the computer instructions stored in the memory 203.

In particular, the functions/implementation procedures of the transceiver module 701 and the processing module 702 in fig. 7 may be implemented by the processor 201 in fig. 2 calling the computer instructions stored in the memory 203. Alternatively, the function/implementation procedure of the transceiver module 701 in fig. 7 may be implemented by the communication interface 204 in fig. 2, and the function/implementation procedure of the processing module 702 in fig. 7 may be implemented by the processor 201 in fig. 2 calling the computer instructions stored in the memory 203.

Memory 203 may be used to store related instructions and data. For example, when the communication apparatus is a terminal device or is located on a terminal device, the memory 203 may also be used to store reference information used when determining whether an access network device can be accessed.

Optionally, an embodiment of the present application further provides a computer-readable storage medium, where computer instructions are stored, and when the computer instructions are executed on a communication apparatus, the communication apparatus is caused to execute the above related method steps to implement the access method in the above embodiment. For example, the communication device may be the terminal device in the above method embodiment. Alternatively, the communication device may be an access network device in the above method embodiment.

Optionally, an embodiment of the present application further provides a computer program product, which when running on a computer, causes the computer to execute the above related steps to implement the access method performed by the communication apparatus in the above embodiment. For example, the communication device may be the terminal device in the above method embodiment. Alternatively, the communication device may be an access network device in the above method embodiment.

Optionally, an apparatus may be specifically a chip, a component, a module, or a system on a chip. The apparatus may include a processor and a memory coupled; the memory is used for storing computer instructions, and when the device runs, the processor can execute the computer instructions stored in the memory, so that the chip can execute the access method executed by the communication device in the above-mentioned method embodiments. For example, the communication device may be the terminal device in the above method embodiment. Alternatively, the communication device may be an access network device in the above method embodiment.

Optionally, an embodiment of the present application further provides a communication system, where the communication system includes a terminal device and an access network device. The terminal device and the access network device in the communication system may respectively perform the access methods performed by the terminal device and the access network device in the above embodiments.

The communication device, the computer-readable storage medium, the computer program product, the chip or the system on chip provided by the embodiments of the present application are all configured to execute the corresponding methods provided above, so that the beneficial effects achieved by the communication device, the computer-readable storage medium, the computer program product, the chip or the system on chip can refer to the beneficial effects in the corresponding methods provided above, and are not described herein again.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, 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 according to the embodiments of the present application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or can comprise one or more data storage devices, such as a server, a data center, etc., that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include such modifications and variations.