Access method and device

Abstract

The invention relates to the technical field of communication, discloses an access method and device, and aims to reduce unnecessary position verification during access of terminal equipment and reduce the access failure probability of the terminal equipment. The method comprises the following steps that: the terminal equipment determines whether one or more service areas need to carry out position verification on accessed terminal equipment or not; and the terminal equipment initiates access to a first service area, the first service area belongs to the one or more service areas, and the first service area is a service area which does not need to perform position verification on the accessed terminal equipment.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an access method and device. Background Art

[0002] Satellite and other non-terrestrial networks (NTN) have the advantages of wide coverage, long communication distance, high reliability, great flexibility, high throughput, and no impact from geographical environment, climate conditions and natural disasters. They have been widely used in aviation communications, maritime communications, military communications and other fields. The introduction of NTN into mobile communication systems, such as the fifth generation (5G) system, can not only provide communication services for areas that are difficult to cover by terrestrial networks, such as oceans and forests, but also enhance the reliability of communications, such as providing more stable and high-quality communication services for trains, airplanes and users on these vehicles, and providing more data transmission resources, such as supporting a larger number of terminal device connections.

[0003] Currently, NTN communication has been introduced in the 3rd Generation Partnership Project (3GPP) standard. However, the beam coverage of satellite and other network equipment is often relatively large and may cover multiple countries. However, the laws and regulations of different countries may differ. Therefore, satellite and other network equipment are needed to verify the location of terminal devices. However, some terminal devices do not support location verification and cannot be accessed due to capabilities and other reasons. Summary of the invention

[0004] The embodiments of the present application provide an access method and apparatus to reduce unnecessary location verification when a terminal device accesses and reduce the probability of failure of terminal device access.

[0005] In the first aspect, an embodiment of the present application provides an access method, which can be executed by a first communication device, where the first communication device can refer to the terminal device itself, or a processor, module, chip, or chip system that implements the method in the terminal device, and the method includes: the first communication device determines whether one or more service areas need to perform location verification on the accessed terminal device; the first communication device initiates access to the first service area, the first service area belongs to one or more service areas, and the first service area is a service area that does not require location verification for the accessed terminal device. Optionally, the service area can be a service (or coverage) area of ​​one or more beams, a partial service (or coverage) area of ​​a cell, a service (or coverage) area corresponding to one or more cells, and the like.

[0006] Through the above method, the service area can be divided into a service area that requires location verification for the accessed terminal device and a service area that does not require location verification for the accessed terminal device according to whether the service area crosses geographical areas (such as countries or regions, etc.). For the first communication device (such as a terminal device) that supports or does not support location verification, it can give priority to initiating access in the service area that does not require location verification for the accessed terminal device, thereby reducing unnecessary location verification, reducing the probability of access failure of the first communication device that does not support location verification, and reducing the power consumption of the first communication device due to access failure.

[0007] In addition, in the above method, the granularity of location verification for accessed terminal devices may be the service (or coverage) area of ​​one or more beams, partial service (or coverage) area of ​​a cell, etc., rather than just the cell. This can reduce the area within a cell where location verification of accessed terminal devices is required, thereby reducing unnecessary location verification.

[0008] In one possible design, one or more service areas are candidate service areas for access initiated by the first communication device, and one or more service areas constitute a set of candidate service areas for access initiated by the first communication device. The method also includes: when there is at least one second service area in the one or more service areas that requires location verification of the accessed terminal device, the first communication device moves the at least one second service area out of the set of candidate service areas.

[0009] Through the above design, the first communication device can be supported to delete the second service area that requires location verification for the accessed terminal device in the set of candidate service areas that meet the access (or residence) requirements, and the first communication device can be prevented from selecting the second service area that requires location verification for the accessed terminal device to initiate access, thereby reducing the failure probability of access of the first communication device that does not support location verification and reducing the power consumption of the first communication device due to access failure.

[0010] In one possible design, a first communication device determines whether one or more service areas need to perform location verification on an accessed terminal device, including: the first communication device receives a first message, the first message including first indication information for indicating whether the first service area needs to perform location verification on an accessed terminal device (or whether it crosses a geographical area), public land mobile network (PLMN) information corresponding to the first service area, and one or more of the location of a reference point of the first service area; the first communication device determines, based on the first message, whether the first service area needs to perform location verification on an accessed terminal device.

[0011] Through the above design, it supports indicating whether the service area needs to perform location verification on the connected terminal device by explicit indications such as the first indication information, as well as implicit indications such as the PLMN information and the location of the reference point, which is conducive to the terminal device accurately knowing whether the service area needs to perform location verification on the connected terminal device.

[0012] In one possible design, the first message includes PLMN information corresponding to the first service area, and the first communication device determines whether the first service area needs to perform location verification on the accessed terminal device based on the first message, including: when the first service area corresponds to the PLMN of a geographical area, the first communication device determines that the first service area does not need to perform location verification on the accessed terminal device.

[0013] Through the above design, the first communication device can obtain whether the service area needs to perform location verification on the accessed terminal device through the PLMN information of the service area. There is no need to indicate to the first communication device through additional signaling or fields whether the service area needs to perform location verification on the accessed terminal device, thereby reducing signaling overhead.

[0014] In one possible design, the first message includes the location of a reference point of the first service area, and the first communication device determines whether the first service area needs to perform location verification on an accessed terminal device based on the first message, including: when the distance between the reference point of the first service area and the boundary of a cross-geographic area is greater than a first threshold, the first communication device determines that the first service area does not need to perform location verification on an accessed terminal device.

[0015] Through the above design, the first communication device is supported to select a service area for access based on the location of a reference point in the service area and the distance across the boundary of a geographical area, which is beneficial for the first communication device to select a service area that does not require location verification of the accessed terminal device to initiate access, thereby reducing the probability of access failure of the first communication device that does not support location verification and reducing the power consumption of the first communication device due to access failure.

[0016] In one possible design, the first communication device determines whether one or more service areas need to perform location verification on an accessed terminal device, including: the first communication device determines the distance between a reference point of each candidate service area in a set of candidate service areas and a boundary across a geographical area; the first communication device determines that the N candidate service areas in the set of candidate service areas with the smallest distance between a reference point and a boundary across a geographical area need to perform location verification on an accessed terminal device, and MN candidate service areas other than the N candidate service areas do not need to perform location verification on an accessed terminal device, wherein the set of candidate service areas includes M candidate service areas, M and N are integers, and N is less than M.

[0017] Through the above design, the first communication device is supported to select a service area for access based on the location of a reference point in the service area and the distance across the boundary of the geographical area, which is beneficial for the first communication device to select a service area that does not require location verification of the accessed terminal device to initiate access, thereby reducing the probability of access failure and reducing the power consumption of the first communication device caused by access failure.

[0018] In the second aspect, an embodiment of the present application provides an access method, which can be executed by a second communication device. The second communication device here can refer to the network device itself, or it can refer to a processor, module, chip, or chip system in the network device that implements the method. The method includes: the second communication device receives access initiated by the first communication device to the first service area; the second communication device determines whether to accept the access of the first communication device or determines the type of service provided to the first communication device based on whether the first service area needs to perform location verification on the accessed terminal device.

[0019] Through the above method, the service area can be divided into a service area that requires location verification of the accessed terminal device and a service area that does not require location verification of the accessed terminal device according to whether the service area crosses geographical areas. This supports the second communication device (such as a network device) to decide whether to accept the access of the first communication device (such as a terminal device) or the type of service provided to the first communication device according to whether the service area initiated by the first communication device (such as a terminal device) requires location verification of the accessed terminal device.

[0020] In one possible design, the second communication device determines whether to accept access of the first communication device according to whether the first service area needs to perform location verification on the accessed terminal device, including: when the first service area does not need to perform location verification on the accessed terminal device, the second communication device determines to accept access of the first communication device; when the first service area needs to perform location verification on the accessed terminal device and the first communication device supports location verification, the second communication device determines to accept access of the first communication device; when the first service area needs to perform location verification on the accessed terminal device and the first communication device does not support location verification, the second communication device determines to reject access of the first communication device; the second communication device determines the type of service to be provided to the first communication device according to whether the first service area needs to perform location verification, including: when the first service area does not need to perform location verification on the accessed terminal device, the second communication device determines to provide the first communication device with a first service type of service; when the first service area needs to perform location verification on the accessed terminal device and the first communication device supports location verification, the second communication device determines to provide the first communication device with a first service type of service; when the first service area needs to perform location verification on the accessed terminal device and the first communication device supports location verification, the second communication device determines to provide the first communication device with a first service type of service; when the first service area needs to perform location verification on the accessed terminal device and the first communication device does not support location verification, the second communication device determines to provide the first communication device with a second service type of service.

[0021] The first service type may include emergency call services and non-emergency call services (such as ordinary conversation services, etc.), and the second service type may only include emergency call services.

[0022] Through the above design, it is possible to support the second communication device (such as a network device) to decide whether to accept the access of the first communication device or the type of service provided to the first communication device based on whether the service area initiated by the first communication device (such as a terminal device) requires location verification of the accessed terminal device and whether the first communication device supports location verification.

[0023] In one possible design, the method also includes: the second communication device sends a first message to the first communication device, wherein the first message includes one or more of first indication information for indicating whether the first service area needs to perform location verification on the accessed terminal device (or whether it crosses geographical areas), PLMN information corresponding to the first service area, and the location of a reference point of the first service area.

[0024] Through the above design, it supports indicating whether the service area needs to perform location verification on the connected terminal device by explicit indications such as the first indication information, as well as implicit indications such as the PLMN information and the location of the reference point, which is conducive to the terminal device accurately knowing whether the service area needs to perform location verification on the connected terminal device.

[0025] In one possible design, before the second communication device determines whether to accept access from the first communication device or determines the type of service provided to the first communication device based on whether the first service area needs to perform location verification on the accessed terminal device, the method further includes: the second communication device receives first information from the first communication device, the first information being used to indicate whether the first communication device supports location verification. Optionally, the first information includes information on whether the first communication device supports location verification, and / or a version number supported by the first communication device, wherein the version number is used to determine whether the first communication device supports location verification.

[0026] The above design can support the second communication device to determine whether the first communication device supports location verification based on the first information reported by the first communication device, which is beneficial for the second communication device to decide whether to accept access from the first communication device or the accuracy of the service type provided to the first communication device.

[0027] In a third aspect, an embodiment of the present application provides a communication device, which has the function of implementing the method of the first aspect or the second aspect, and the function can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions, such as a communication unit and a processing unit.

[0028] In a fourth aspect, an embodiment of the present application provides a communication device, including a processor, wherein the processor is used to execute the methods described in the above aspects.

[0029] Optionally, the communication device may further include a memory for storing instructions executed by the processor or storing input data required by the processor to execute the instructions or storing data generated after the processor executes the instructions. The memory may be a physically independent unit or may be coupled to the processor, or the processor may include the memory (i.e., the processor and the memory are integrated together).

[0030] In a possible implementation, the communication device is a chip.

[0031] In a fifth aspect, an embodiment of the present application provides a communication system, which includes a first communication device (such as a terminal device) and a second communication device (such as a network device), wherein the first communication device has the function of implementing the method of the first aspect above, and the second communication device has the function of implementing the method of the second aspect above.

[0032] In the sixth aspect, an embodiment of the present application further provides a computer-readable storage medium, in which a computer program or instructions are stored. When the computer program or instructions are executed by a communication device, the communication device executes the method provided in the first or second aspect above.

[0033] In a seventh aspect, an embodiment of the present application further provides a computer program product, comprising a computer program code, which, when executed (such as executed by a processor), can implement the method of the first aspect or the second aspect described above.

[0034] In an eighth aspect, an embodiment of the present application further provides a chip, which is used to read a computer program stored in a memory and execute the method provided in the first or second aspect above.

[0035] Optionally, the chip is coupled to a memory, or the memory is a part of the chip.

[0036] In the ninth aspect, an embodiment of the present application further provides a chip system, which includes a processor for supporting a computer device to implement the method provided in the first or second aspect above.

[0037] In a possible design, the chip system further includes a memory, which is used to store programs and data necessary for the computer device. The chip system can be composed of a chip, or can include a chip and other discrete devices.

[0038] The technical effects that can be achieved in the third to ninth aspects mentioned above can refer to the technical effects that can be achieved in the first or second aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic diagram of the architecture of a communication system provided in an embodiment of the present application;

[0040] Figure 2A , Figure 2B and Figure 2C A schematic diagram of a communication scenario provided in an embodiment of the present application;

[0041] Figure 3 One of the schematic diagrams of the access method provided in the embodiment of the present application;

[0042] Figure 4 A schematic diagram of the cell distribution provided in the embodiment of the present application;

[0043] Figure 5 One of the schematic diagrams of terminal device initiating access provided in the embodiment of the present application;

[0044] Figure 6The second schematic diagram of a terminal device initiating access provided in an embodiment of the present application;

[0045] Figure 7 The second schematic diagram of the access method provided in the embodiment of the present application;

[0046] Figure 8 One of the structural schematic diagrams of the communication device provided in the embodiment of the present application;

[0047] Fig. 9 The second structural diagram of the communication device provided in the embodiment of the present application. DETAILED DESCRIPTION

[0048] The technical solution of the embodiment of the present application can be applied to various communication systems, such as: 5G communication system, NTN communication system, etc., and can also be applied to the sixth generation (6G) communication system and other communication systems evolved after 5G. Figure 1 As shown, it is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application. The communication system includes a network device and a terminal device, wherein the number of network devices is 1 and the number of terminal devices is 2 (terminal device A and terminal device B) as an example. Terminal device A and terminal device B can communicate with the network device separately or simultaneously. It should be noted that the embodiments of the present application do not limit Figure 1 The number of terminal devices and network devices in the communication system shown.

[0049] The above-mentioned terminal equipment may also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal, etc., and is a device or equipment with wireless communication function. The terminal equipment can be widely used in various scenarios, for example, machine type of communication (MTC), Internet of things (IoT), vehicle to everything (V2X), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal equipment may be a subscriber unit, a cellular phone, a smart phone, a wireless data card, a personal digital assistant (PDA) computer, a tablet computer, a wireless modem, a handheld device (handset), a laptop computer, a customer-premises equipment (CPE), a smart point of sale (POS) machine, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a mechanical arm, a smart home device, an MTC device, a ground station, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0050] The above network equipment may also be referred to as access network (AN) equipment or radio access network (RAN) equipment, which is a device or equipment that can be deployed in a radio access network to provide wireless communication functions for terminal devices. The network equipment may be a base station for wireless communication such as an artificial earth satellite and a high-altitude aircraft, such as a medium earth orbit (MEO) satellite in a non-geostationary earth orbit (NGEO), a low earth orbit (LEO) satellite, a high altitude platform station (HAPS), an evolved NodeB (eNB) and a 5G base station (gNB). Optionally, the network equipment in the embodiments of the present application may include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), relay stations, access points, devices that implement base station functions in communication systems that evolve after 5G, transmission points (transmitting and receiving points, TRP), transmitting points (transmitting points, TP), mobile switching centers, and devices that perform base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, etc., and may also include centralized units (CU) and distributed units (DU) in cloud access network (C-RAN) systems. The embodiments of the present application do not specifically limit this.

[0051] Taking the network device as a satellite as an example, the communication scenario of the specific application of the embodiment of the present application can be as follows: Figure 2A , Figure 2B and Figure 2C shown.

[0052] exist Figure 2A In the scenario shown, the base station is deployed on the ground, the satellite is connected to the ground station through the air interface, and the ground station can be connected to the base station through a wireless or wired link. The terminal equipment on the ground accesses the mobile communication network through the air interface (the air interface can be various types of air interfaces, such as 5G air interfaces), and the satellite acts as a transmission node to forward the information of the terminal equipment.

[0053] exist Figure 2BIn the scenario shown, the base station is deployed on the satellite, and the satellite is connected to the ground station through the air interface, and the ground station can be connected to the core network through a wireless or wired link. The terminal equipment on the ground communicates with the satellite base station through the air interface to access the mobile communication network. The satellite, as a base station, is connected to the ground station through the air interface NG interface, and the ground station is connected to the core network through the NG interface. The NG interface can be wireless or wired.

[0054] Figure 2C The scene shown is similar to Figure 2B Compared with the scenario shown in FIG. 1 , a communication scenario between satellite base stations is added. Specifically, satellite base stations can communicate with each other through an Xn interface.

[0055] exist Figure 2A-2C In the present invention, the terminal equipment may include various types of terminal equipment supporting the new air interface, such as the various types of terminals listed above. The terminal equipment may access the satellite network through the air interface and initiate calls, surf the Internet and other services.

[0056] Base stations are mainly used to provide wireless access services, dispatch wireless resources to access terminal devices, provide reliable wireless transmission protocols and data encryption protocols, etc.

[0057] The core network is mainly used to provide functions such as user access control, mobility management, session management, user security authentication, and billing. The core network consists of multiple functional units, which can be divided into functional entities of the control plane and the data plane.

[0058] The ground station is mainly responsible for forwarding signaling and business data between the satellite and the base station, or between the satellite and the core network.

[0059] Air interface: refers to the wireless link between the terminal device and the base station.

[0060] Xn interface: represents the interface between satellite base stations, mainly used for signaling interaction such as switching.

[0061] NG interface: refers to the interface between the base station and the core network, or the interface between the ground station and the core network, or the interface between the satellite base station and the ground station (in this case, the interface is a wireless link), which mainly interacts with the core network's non-access stratum (NAS) and other signaling, as well as user service data.

[0062] Since the beam coverage of non-terrestrial network devices such as satellites is often relatively large and may cover areas of multiple countries, and the laws and regulations of different countries may differ, when the terminal device selects or reselects a cell and initiates access, non-terrestrial network devices such as satellites need to know the location of the terminal device, and adopt different laws and regulations or provide different services according to the location of the terminal device. Unlike terrestrial communications, network devices such as ground base stations can directly locate terminal devices. In NTN communications, the terminal device can report its own location, and non-terrestrial network devices such as satellites can verify the location reported by the terminal device. However, since the location verification of NTN communications was newly introduced in the R18 version of the 3GPP standard, existing terminal devices do not support location verification, which results in these terminal devices being unable to access NTN cells such as satellites because they do not support location verification.

[0063] Based on this, the present application provides an access method and device, in order to reduce unnecessary location verification when a terminal device accesses, and reduce the probability of failure of terminal device access. The embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0064] In addition, it should be understood that the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the size, content, order, timing, priority or importance of multiple objects. For example, the first service area and the second service area do not mean that the priority or importance of the two service areas is different.

[0065] In the embodiments of the present application, the number of nouns, unless otherwise specified, means "singular noun or plural noun", that is, "one or more". "At least one" means one or more, and "plural" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. For example, A / B means: A or B. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c can be single or multiple.

[0066] The access method provided in the embodiment of the present application can be performed by a first communication device and a second communication device. The first communication device here can refer to the terminal device itself, or a processor, module, chip, or chip system in the terminal device that implements the method; the second communication device can refer to the network device itself, or a processor, module, chip, or chip system in the network device that implements the method. The access method provided by the present application is introduced below by taking the first communication device and the second communication device as an example, respectively, the first terminal device and the second terminal device.

[0067] Figure 3 A schematic diagram of an access method provided in an embodiment of the present application, the method comprising:

[0068] S301: The terminal device determines whether one or more service areas require location verification for the connected terminal device.

[0069] In a communication system, a network device may include one or more cells, or a network device may serve one or more cells. Figure 4 As shown in the schematic diagram of cell distribution, it can be seen that satellite 1 includes cell 1 and cell 2, and can provide services for terminal devices located in cell 1 and cell 2.

[0070] For network equipment such as satellites and high-altitude platforms, the beam coverage range is often large, and the cell of the network equipment may cover multiple geographical areas (such as different administrative divisions such as countries and regions). The laws and regulations of different geographical areas may be different. Therefore, the network equipment is required to verify the location of the terminal device and adopt different laws and regulations or provide different services based on the location of the terminal device.

[0071] It can be understood that in the embodiments of the present application, if two countries (or regions) correspond to the same PLMN and are subject to the same laws and regulations, the two countries (or regions) can also be regarded as a geographical area; if different areas (such as provinces, etc.) in the same country (or region) correspond to different PLMNs and are subject to different laws and regulations, different areas in the same country (or region) can also be regarded as a geographical area. For example: Cell A covers Province A1 and Province A2 of Country A. Although Province A1 and Province A2 belong to the same country A, Province A1 and Province A2 correspond to different PLMNs and are subject to different laws and regulations. If a terminal device with its home location in Province A1 accesses the PLMN in Province A2, it is considered roaming. Then Province A1 and Province A2 can be regarded as a geographical area respectively.

[0072] In the embodiment of the present application, the service area of ​​the network device can be divided into two types, one is that the coverage of the service area includes (or involves) multiple geographical areas, and the service area needs to verify the location of the terminal device connected; the other is that the coverage of the service area only includes (or only involves) one geographical area, and the service area does not need to verify the location of the terminal device connected. Among them, the service area can be the service (or coverage) area of ​​one or more beams, the partial service (or coverage) area of ​​a cell, the service (or coverage) area corresponding to one cell or multiple cells, etc.

[0073] Take the service area as a cell as an example, refer to Figure 4 From the cell distribution diagram shown, it can be seen that the coverage of cell 1 of satellite 1 does not cross the boundary line of the geographical area, and the coverage range only involves one geographical area. Cell 1 does not need to verify the location of the connected terminal equipment; the coverage of cell 2 of satellite 1 crosses the boundary line of the geographical area, and the coverage range involves multiple geographical areas. Cell 2 needs to verify the location of the connected terminal equipment to determine the geographical area where the terminal equipment is located, so as to provide the terminal equipment with services that comply with the laws and regulations of the geographical area where the terminal equipment is located.

[0074] Whether the service area needs to perform location verification on the accessed terminal device, the terminal device may determine it according to a first message from a network device corresponding to the service area, wherein the first message may include one or more of first indication information indicating whether the first service area crosses a geographical area, PLMN information corresponding to the first service area, and the location of a reference point of the first service area. This is described below in conjunction with a specific implementation.

[0075] In one possible implementation, the network device can send a first message via broadcast or multicast, where the first message includes first indication information for indicating whether the first service area needs to perform location verification on the accessed terminal device. The terminal device can determine whether the first service area needs to perform location verification on the accessed terminal device based on the received first message.

[0076] Taking the first service area as the coverage area of ​​a certain cell as an example, the network device can broadcast a first message in the cell. The first message can include a first field. When the first field is a first value, it indicates that the cell needs to perform location verification on the accessed terminal device across geographical areas; when the first field is a second value, it indicates that the cell does not cross geographical areas and does not need to perform location verification on the accessed terminal device. The terminal device can determine that the cell (i.e., the first service area) needs to perform location verification on the accessed terminal device when the first field of the first message is a first value, and determine that the cell (i.e., the first service area) does not need to perform location verification on the accessed terminal device when the first field of the first message is a second value. Taking the first field as 1 bit as an example, the first value can be 1 and the second value can be 0, or the first value can be 0 and the second value can be 1.

[0077] Taking the first service area as the coverage area of ​​the first beam, and the first beam as a beam of a certain cell as an example, the network device can broadcast a first message in the cell, and the first message can include a second field, and the second field can include the identifiers of one or more beams in the cell that need to perform location verification on the accessed terminal device. The terminal device can determine that the first beam (i.e., the first service area) needs to perform location verification on the accessed terminal device when the identifier of the first beam is included in the second field of the first message, and determine that the first beam (i.e., the first service area) does not need to perform location verification on the accessed terminal device when the identifier of the first beam is not included in the second field of the first message.

[0078] For example: each synchronization signal block (synchronization signal / PBCH block, SSB) in a cell represents a beam in one direction, and the beams in the cell include SSB1, SSB2, and SSB3. The first beam SSB3 is a beam of the cell, wherein the coverage of SSB3 spans a geographical area, and the network device carries the identifier of SSB3 (such as SSB3 index) in the second field of the first message broadcast by the cell, and the terminal device can determine that the first beam SSB3 needs to perform location verification on the accessed terminal device according to the identifier of SSB3 carried in the second field of the first message. The above-mentioned SSB may include a synchronization signal and / or a physical broadcast channel (PBCH), and the synchronization signal may include two parts, a primary synchronization signal (PSS) and a secondary synchronization signal (SSS).

[0079] In another possible implementation, the network device may send a first message via broadcast or multicast, where the first message includes public land mobile network (PLMN) information corresponding to the first service area. The terminal device may determine whether the first service area requires location verification of the accessed terminal device based on the PLMN information corresponding to the first service area.

[0080] At present, all cells will broadcast PLMN information. One PLMN corresponds to one core network. If a cell involves cross-geographical areas, the broadcast message of the cell will indicate PLMNs of at least two different geographical areas. If a cell does not involve cross-geographical areas, the PLMN of the cell will only involve one geographical area. Taking the first service area as the coverage area of ​​a certain cell as an example, the network device can broadcast a first message in the cell, and the first message includes the PLMN information corresponding to the cell. After receiving the first message, the terminal device can determine the one or more PLMNs corresponding to the cell based on the PLMN information corresponding to the cell (such as one or more PLMN IDs corresponding to the cell). In the case where the cell corresponds to PLMNs of at least two geographical areas, the terminal device can determine that the cell (i.e., the first service area) needs to perform location verification on the accessed terminal device. In the case where the cell only corresponds to the PLMN of one geographical area, the terminal device can determine that the cell (i.e., the first service area) does not need to perform location verification on the accessed terminal device.

[0081] It should be understood that in some special cases, such as when the laws and regulations applicable to PLMNs in two geographical areas (such as countries) are the same, although a cell corresponds to PLMNs in at least two geographical areas, the protocol stipulates, or the laws and regulations stipulate, or the network equipment side indicates that the cell allows terminal devices that do not support location verification to initiate access. The terminal device may also determine the cell as a cell that does not require location verification for the accessing terminal devices.

[0082] In another possible implementation, the network device may send a first message via broadcast or multicast, where the first message includes the location of a reference point of the first service area. The terminal device may also determine whether the first service area needs to perform location verification on the accessed terminal device based on the location of the reference point of the first service area.

[0083] Taking the first service area as the coverage area of ​​a certain cell as an example, the network device can broadcast a first message in the cell, and the first message can include the location of the reference point of the cell, where the reference point of the cell can be the center point, edge point or any point in the cell, etc. After the terminal device receives the first information, it can determine whether the cell (i.e., the first service area) needs to perform location verification on the connected terminal device based on whether the distance between the reference point of the cell and the boundary across the geographical area (i.e., the boundary line) is less than or equal to a first threshold.

[0084] For example: if the distance between the reference point of the cell and the cross-geographical area boundary is less than or equal to the first threshold, the terminal device determines that the cell (i.e., the first service area) needs to perform location verification on the accessed terminal device; if the distance between the reference point of the cell and the cross-geographical area boundary is greater than the first threshold, the terminal device determines that the cell (i.e., the first service area) does not need to perform location verification on the accessed terminal device. The cross-geographical area boundary can be pre-configured in the terminal device, can be sent to the terminal device by a network device, etc., or can be obtained by the terminal device through a map application (application, APP) in the terminal device, and this application does not limit this.

[0085] In addition, the above implementations are all introduced by taking the first service area as the coverage area of ​​a certain cell or beam as an example. It can be understood that when the first service area is a partial service (or coverage) area of ​​a certain cell, the terminal device can determine that the first service area needs to perform location verification on the accessed terminal device when the cell needs to perform location verification on the accessed terminal device, and when the cell does not need to perform location verification on the accessed terminal device, it is determined that the first service area does not need to perform location verification on the accessed terminal device.

[0086] When the first service area is a service (or coverage) area corresponding to one or more cells, the terminal device may determine that the first service area needs to perform location verification on the accessed terminal device when at least one of the one or more cells corresponding to the first service area needs to perform location verification on the accessed terminal device; and determine that the first service area does not need to perform location verification on the accessed terminal device when one or more cells corresponding to the first service area do not need to perform location verification on the accessed terminal device.

[0087] When the first service area is the service (or coverage) area of ​​multiple beams, the terminal device may determine that the first service area needs to perform location verification on the accessed terminal device when at least one beam among the multiple beams needs to perform location verification on the accessed terminal device, and determine that the first service area does not need to perform location verification on the accessed terminal device when none of the multiple beams need to perform location verification on the accessed terminal device.

[0088] S302: The terminal device initiates access to the first service area, and accordingly, the network device receives the access initiated by the terminal device in the first service area.

[0089] The first service area is a service area that does not require location verification for accessed terminal devices.

[0090] In one possible implementation, when a terminal device is performing cell selection, reselection, or switching, one or more service areas that meet the access (or residence) requirements may be used as candidate service areas for initiating access, and the candidate service areas may be screened based on whether the service area requires location verification of the accessing terminal device.

[0091] For example: the terminal device can move out of one or more second service areas that require location verification for the accessed terminal device in a set of candidate service areas consisting of one or more service areas that meet the access (or residence) requirements, and select a first service area in the set of candidate service areas that does not require location verification for the accessed terminal device to initiate access.

[0092] Alternatively, the terminal device may also lower the access priority of one or more second service areas that require location verification for the accessing terminal device (for example, lower the access priority to the lowest) in a set of candidate service areas consisting of one or more service areas that meet the access (or residence) requirements, and select the service area for initiating access according to the access priority of the candidate service area in the set of candidate service areas.

[0093] Take the service area as a cell and the terminal device as a terminal device that does not support location verification as an example. Figure 5 As shown, the candidate cell set that meets the terminal device access (or residence) requirements includes cell 1 and cell 2, where cell 2 requires location verification for the accessed terminal device. The terminal device can remove cell 2 from the candidate cell set and select cell 1 in the candidate cell set that does not require location verification for the accessed terminal device to initiate access.

[0094] Reference Figure 6 As shown, the candidate beam set that meets the terminal device access (or residence) requirements includes beam 1, beam 2 and beam 3, among which beam 3 requires location verification for the accessed terminal device. The terminal device can remove beam 3 from the candidate beam set and select beam 1 or beam 2 in the candidate beam set that does not require location verification for the accessed terminal device to initiate access.

[0095] In some implementations, the terminal device may also filter the candidate service areas in the candidate service area set based on the distance between the reference point of each candidate service area in the candidate service area set and the boundary across the geographical area, and select the candidate service area for initiating access.

[0096] As an example, the candidate service area set includes M candidate service areas. The terminal device can determine the distance between the reference point of each candidate service area in the M candidate service areas and the boundary of the cross-geographic area based on the reference point position of each candidate service area in the M candidate service areas, and can determine that the N candidate service areas with the smallest distance between the reference point and the boundary of the cross-geographic area among the M candidate service areas require location verification for the accessed terminal device, or are candidate service areas for which access is not recommended. The terminal device can select a candidate service area to initiate access from the remaining MN candidate service areas in the candidate service area set, and initiate access, where M and N are integers, N is less than M, and N can be determined based on M, such as N is M-1, N is M-2, etc., or N is the integer digit of the product of M and a set proportional coefficient, etc.

[0097] In some implementations, if a candidate service area in the candidate service area set has a corresponding access (or residence) priority, the terminal device may also select a candidate service area to initiate access based on the access priority corresponding to the candidate service area in the candidate service area set and whether the candidate service area requires location verification for the accessed terminal device.

[0098] As an example: the candidate service area set includes service area 1 and service area 2, service area 1 needs to perform location verification on the accessed terminal device, service area 2 does not need to perform location verification on the accessed terminal device, and the access priority of the service area is determined according to the signal quality of the service area, wherein the signal quality of service area 1 is greater than the signal quality of service area 2, and the access priority of service area 1 is higher than the access priority of service area 2. When the terminal device selects a service area to initiate access, unlike the terminal device selecting service area 1 to initiate access under normal conditions, the terminal device may give priority to selecting service area 2 that does not require location verification for the accessed terminal device to initiate access, while considering whether the service area needs to perform location verification on the accessed terminal device.

[0099] In addition, it is understandable that if a terminal device (such as a terminal device that does not support location verification) is performing cell selection, reselection or switching, the candidate service areas in the set of candidate service areas that meet the access (or residence) requirements all need to perform location verification on the accessed terminal device. The terminal device may also not perform cell selection, reselection or switching, and wait for the terminal device to change location before trying cell selection, reselection or switching.

[0100] As an example: the terminal device resides in service area 3. If the terminal device determines that the candidate service areas that meet the access (or residency) requirements only include service area 2, and service area 2 requires location verification for the accessed terminal device, the terminal device may not switch.

[0101] S303: The network device determines whether to accept the access of the terminal device or determines the type of service provided to the terminal device according to whether the first service area needs to perform location verification on the accessed terminal device.

[0102] In a possible implementation, the network device may determine whether to accept access by the terminal device according to whether the first service area needs to perform location verification on the accessed terminal device.

[0103] As an example: when the first service area does not require location verification for the accessing terminal device, the network device may determine to accept the access initiated by the terminal device to the first service area without considering whether the terminal device supports location verification.

[0104] In the case where location verification is required for a terminal device accessing the first service area, if the terminal device supports location verification, the network device can determine to accept the access initiated by the terminal device to the first service area, and can provide services that comply with the laws and regulations of the geographical area where the terminal device is located based on the location of the terminal device after the location verification of the terminal device is passed.

[0105] In the case where the first service area needs to perform location verification on the terminal device accessing, if the terminal device does not support location verification, the network device may determine to reject the access initiated by the terminal device to the first service area.

[0106] In another possible implementation, the network device may accept the access initiated by the terminal device to the first service area, but determines the type of service provided to the terminal device according to whether the first service area needs to perform location verification on the accessed terminal device.

[0107] As an example: when there is no need to perform location verification on the accessed terminal device in the first service area, the network device determines to provide the terminal device with a service of the first business type.

[0108] In the case where the location of the accessed terminal device needs to be verified in the first service area, if the terminal device supports the location verification, the network device determines to provide the terminal device with a service of the first service type.

[0109] In the case where the location of the accessed terminal device needs to be verified in the first service area, if the terminal device does not support the location verification, the network device determines to provide the terminal device with a service of the second service type.

[0110] The first service type may include emergency call services and non-emergency call services (such as ordinary conversation services, etc.), and the second service type may only include emergency call services.

[0111] In an embodiment of the present application, when the terminal device does not support location verification and the service area to which the terminal device initiates access requires location verification of the accessed terminal device, the network side (such as the access network side and the core network side) will reject the access initiated by the terminal device or reject the terminal device to register in the core network during the terminal device access process, or although the terminal device is allowed to register in the core network, the terminal device can only be provided with limited services, for example: only emergency call services can be provided, and no service types other than emergency calls can be provided.

[0112] In the case where the terminal device can only be provided with the second service type, the terminal device can choose to exit or continue communicating according to its own service needs. If the choice is to exit, the terminal device can exit to the idle state and then re-select, reselect or switch the cell.

[0113] The information on whether the terminal device supports location verification can be determined by the network device based on the first information sent by the terminal device during the access process, etc. The first information may include information on whether the terminal device supports location verification and / or a version number supported by the terminal device, wherein the version number can be used to determine whether the terminal device supports location verification.

[0114] As an example: the first information includes that the version number supported by the terminal device is R17, and the terminal device with the version number R17 does not support location verification, and the network device can determine that the terminal device does not support location verification.

[0115] In an embodiment of the present application, it is also possible to support access methods in which the terminal device does not first verify the information, for example: the network device does not indicate whether the service area needs to perform location verification on the accessed terminal device, and the terminal device does not consider whether the service area initiating the access needs to perform location verification on the accessed terminal device.

[0116] Reference Figure 7 FIG. 1 is a schematic diagram of another access method provided in an embodiment of the present application, the method comprising:

[0117] S701: A terminal device initiates access to a first service area, and accordingly, a network device receives a signal from the terminal device that accesses the first service area.

[0118] S702: The network device determines whether to accept access by the terminal device or determines the type of service provided to the terminal device according to whether the first service area needs to perform location verification on the terminal device that accesses.

[0119] In an embodiment of the present application, when a terminal device initiates access, it is not necessary to consider whether the service area initiating the access needs to perform location verification on the accessed terminal device. The network device corresponding to the service area initiating the access by the terminal device determines whether to accept the access of the terminal device or determine the type of service provided to the terminal device based on whether the service area initiating the access by the terminal device needs to perform location verification on the accessed terminal device.

[0120] In a possible implementation, the network device may determine whether to accept access by the terminal device according to whether the first service area needs to perform location verification on the accessed terminal device.

[0121] As an example: when the first service area does not require location verification for the accessing terminal device, the network device may determine to accept the access initiated by the terminal device to the first service area without considering whether the terminal device supports location verification.

[0122] In the case where location verification is required for a terminal device accessing the first service area, if the terminal device supports location verification, the network device can determine to accept the access initiated by the terminal device to the first service area, and can provide services that comply with the laws and regulations of the geographical area where the terminal device is located based on the location of the terminal device after the location verification of the terminal device is passed.

[0123] In the case where the first service area needs to perform location verification on the terminal device accessing, if the terminal device does not support location verification, the network device may determine to reject the access initiated by the terminal device to the first service area.

[0124] In another possible implementation, the network device may accept the access initiated by the terminal device to the first service area, but determines the type of service provided to the terminal device according to whether the first service area needs to perform location verification on the accessed terminal device.

[0125] As an example: when there is no need to perform location verification on the accessed terminal device in the first service area, the network device determines to provide the terminal device with a service of the first business type.

[0126] In the case where the location of the accessed terminal device needs to be verified in the first service area, if the terminal device supports the location verification, the network device determines to provide the terminal device with a service of the first service type.

[0127] In the case where the location of the accessed terminal device needs to be verified in the first service area, if the terminal device does not support the location verification, the network device determines to provide the terminal device with a service of the second service type.

[0128] The first service type may include emergency call services and non-emergency call services (such as ordinary conversation services, etc.), and the second service type may only include emergency call services.

[0129] The information on whether the terminal device supports location verification can be determined by the network device based on the first information sent by the terminal device during the access process, etc. The first information may include information on whether the terminal device supports location verification and / or a version number supported by the terminal device, wherein the version number can be used to determine whether the terminal device supports location verification.

[0130] As an example: the first information includes that the version number supported by the terminal device is R17, and the terminal device with the version number R17 does not support location verification, and the network device can determine that the terminal device does not support location verification.

[0131] The communication device provided in the embodiment of the present application is described below. Figure 8 , Figure 8 This is a schematic diagram of the structure of the communication device of the embodiment of the present application. The communication device may include units or modules corresponding to all or part of the steps in the above method embodiment, and may be used to execute the steps executed by the first communication device (such as a terminal device) or the second communication device (such as a second terminal device) in the above embodiment. For details, please refer to the relevant introduction in the above method embodiment.

[0132] like Figure 8 As shown, the communication device 800 includes a processing unit 810 and a communication unit 820, wherein the processing unit 810 can be a processor or a processing circuit, and the communication unit 820 can also be a transceiver unit or an input / output interface. The communication device 800 can be used to implement the steps performed by the first communication device or the second communication device.

[0133] When the communication device 800 is used to implement the steps performed by the first communication device (such as a terminal device) in the above embodiment:

[0134] The processing unit 810 is used to determine whether one or more service areas need to perform location verification on the accessed terminal device;

[0135] The communication unit 820 is used to initiate access to a first service area, where the first service area belongs to the one or more service areas and is a service area that does not require location verification for an accessed terminal device.

[0136] In one possible design, the one or more service areas are candidate service areas for access initiated by the first communication device, and the one or more service areas constitute a set of candidate service areas for access initiated by the first communication device. The processing unit 810 is further used to move at least one second service area out of the set of candidate service areas if there is at least one second service area in the one or more service areas that requires location verification of an accessed terminal device.

[0137] In one possible design, when the processing unit 810 determines whether one or more service areas need to perform location verification on an accessed terminal device, it is specifically used to receive a first message through the communication unit 820, the first message including first indication information for indicating whether the first service area needs to perform location verification on an accessed terminal device, PLMN information corresponding to the first service area, and one or more of the location of a reference point of the first service area; and determine, based on the first message, whether the first service area needs to perform location verification on an accessed terminal device.

[0138] In one possible design, the first message includes PLMN information corresponding to the first service area. The processing unit 810 determines whether the first service area needs to perform location verification on the accessed terminal device based on the first message. Specifically, when the first service area corresponds to a PLMN in a geographical area, it is used to determine that the first service area does not need to perform location verification on the accessed terminal device.

[0139] In one possible design, the first message includes the location of a reference point of the first service area. When the processing unit 810 determines whether the first service area needs to perform location verification on an accessed terminal device based on the first message, it is specifically used to determine that the first service area does not need to perform location verification on an accessed terminal device when the distance between the reference point of the first service area and the boundary of a cross-geographic area is greater than a first threshold.

[0140] In one possible design, when the processing unit 810 determines whether one or more service areas need to perform location verification on an accessed terminal device, it is specifically used to: determine the distance between a reference point of each candidate service area in the candidate service area set and a cross-geographical area boundary; and determine that the N candidate service areas in the candidate service area set with the smallest distance between the reference point and the cross-geographical area boundary need to perform location verification on the accessed terminal device, and the remaining MN candidate service areas do not need to perform location verification on the accessed terminal device, wherein the candidate service area set includes M candidate service areas, M and N are integers, and N is less than M.

[0141] In one possible design, the first communication device does not support location verification.

[0142] When the communication device 800 is used to implement the steps performed by the second communication device (such as a network device) in the above embodiment:

[0143] The communication unit 820 is configured to receive access initiated by the first communication device to the first service area;

[0144] The processing unit 810 is used to determine whether to accept the access of the first communication device or determine the service type provided for the first communication device according to whether the first service area needs to perform location verification on the accessed terminal device.

[0145] In one possible design, when the processing unit 810 determines whether to accept access of the first communication device based on whether the first service area needs to perform location verification on the accessed terminal device, the processing unit 810 is specifically used to: determine to accept access of the first communication device when the first service area does not need to perform location verification on the accessed terminal device; determine to accept access of the first communication device when the first service area needs to perform location verification on the accessed terminal device and the first communication device supports location verification; determine to reject access of the first communication device when the first service area needs to perform location verification on the accessed terminal device and the first communication device does not support location verification.

[0146] In one possible design, when the processing unit 810 determines the type of service to be provided to the first communication device based on whether the first service area needs to perform location verification on the accessed terminal device, the processing unit 810 is specifically used to: determine to provide the first communication device with service of the first service type when the first service area does not need to perform location verification on the accessed terminal device; determine to provide the first communication device with service of the first service type when the first service area needs to perform location verification on the accessed terminal device and the first communication device supports location verification; determine to provide the first communication device with service of the second service type when the first service area needs to perform location verification on the accessed terminal device and the first communication device does not support location verification.

[0147] In one possible design, the communication unit 820 is also used to send a first message to the first communication device, wherein the first message includes one or more of first indication information for indicating whether the first service area needs to perform location verification on the accessed terminal device, PLMN information corresponding to the first service area, and the location of a reference point of the first service area.

[0148] In one possible design, the communication unit 820 is further used to receive first information from the first communication device, where the first information is used to indicate whether the first communication device supports location verification.

[0149] In one possible design, the first information includes information on whether the first communication device supports location verification and / or a version number supported by the first communication device, wherein the version number is used to determine whether the first communication device supports location verification.

[0150] like Fig. 9 As shown, the present application also provides a communication device 900, including a processor 910, and may also include a communication interface 920. The processor 910 and the communication interface 920 are coupled to each other. It can be understood that the communication interface 920 can be a transceiver, an input-output interface, an input interface, an output interface, an interface circuit, etc. Optionally, the communication device 900 may also include a memory 930 for storing instructions executed by the processor 910 or storing input data required for the processor 910 to run the instructions or storing data generated after the processor 910 runs the instructions. Among them, the memory 930 may be a physically independent unit, or it may be coupled to the processor 910, or the processor 910 may include the memory 930.

[0151] When the communication device 900 is used to implement the steps performed by the first communication device (such as a terminal device) or the second communication device (such as a network device) in the above embodiments, the processor 910 can be used to implement the functions of the above processing unit 810, and the communication interface 920 can be used to implement the functions of the above communication unit 820.

[0152] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), logic circuits, field programmable gate arrays (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0153] The method steps in the embodiments of the present application can be implemented by hardware, or by a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, a register, a hard disk, a mobile hard disk, a CD-ROM, or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and can write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a network device or a terminal device. Of course, the processor and the storage medium can also be present in a network device or a terminal device as discrete components.

[0154] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device or other programmable device. The computer program or instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instruction may be transmitted from one network device, terminal, computer, server or data center to another network device, terminal, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, for example, a floppy disk, a hard disk, a tape; it may also be an optical medium, for example, a digital video disc; it may also be a semiconductor medium, for example, a solid-state hard disk. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0155] In the various embodiments of the present application, unless otherwise specified or provided for in any logical conflict, the terms and / or descriptions between the different embodiments are consistent and may be referenced to each other, and the technical features in the different embodiments may be combined to form new embodiments according to their inherent logical relationships.

[0156] In addition, it should be understood that in the embodiments of the present application, the word "exemplary" is used to indicate an example, illustration or description. Any embodiment or design described as "exemplary" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present concepts in a specific way.

[0157] It is understood that the various numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

Claims

1. An access method, characterized in that: include: The first communication device determines whether one or more service areas require location verification of the accessed terminal device; The first communication device initiates access to a first service area, the first service area belongs to the one or more service areas, and the first service area is a service area that does not require location verification for an accessed terminal device.

2. The method according to claim 1, characterized in that The one or more service areas are candidate service areas for the first communication device to initiate access, and the one or more service areas constitute a set of candidate service areas for the first communication device to initiate access, and the method further includes: In the case that there is at least one second service area among the one or more service areas that requires location verification of the accessed terminal device, the first communication device moves the at least one second service area out of the candidate service area set.

3. The method according to claim 1 or 2, characterized in that The first communication device determines whether one or more service areas require location verification of the accessed terminal device, including: The first communication device receives a first message, wherein the first message includes one or more of first indication information for indicating whether the first service area needs to perform location verification on the accessed terminal device, public land mobile network PLMN information corresponding to the first service area, and a location of a reference point of the first service area; The first communication device determines, based on the first message, whether the first service area requires location verification of the accessed terminal device.

4. The method according to claim 3, characterized in that The first message includes PLMN information corresponding to the first service area, and the first communication device determines whether the first service area needs to perform location verification on the accessed terminal device according to the first message, including: In the case where the first service area corresponds to a PLMN in a geographical area, the first communication device determines that the first service area does not require location verification of the accessed terminal device.

5. The method according to claim 3, characterized in that The first message includes the location of the reference point of the first service area, and the first communication device determines whether the first service area needs to perform location verification on the accessed terminal device according to the first message, including: When the distance between the reference point of the first service area and the boundary of the cross-geographical area is greater than a first threshold, the first communication device determines that the first service area does not need to perform location verification on the accessed terminal device.

6. The method according to claim 2, characterized in that The first communication device determines whether one or more service areas require location verification of the accessed terminal device, including: The first communication device determines a distance between a reference point of each candidate service area in the set of candidate service areas and a boundary across a geographical area; The first communication device determines that N candidate service areas in the candidate service area set whose distances between reference points and cross-geographic area boundaries are the smallest require location verification of connected terminal devices, and MN candidate service areas other than the N candidate service areas do not require location verification of connected terminal devices, wherein the candidate service area set includes M candidate service areas, and M and N are integers, and N is less than M.

7. The method according to any one of claims 1 to 6, characterized in that The first communication device does not support location verification.

8. An access method, characterized in that: include: The second communication device receives the access initiated by the first communication device to the first service area; The second communication device determines whether to accept access by the first communication device or determines the type of service provided to the first communication device according to whether the first service area needs to perform location verification on the accessed terminal device.

9. The method according to claim 8, characterized in that The second communication device determines whether to accept access by the first communication device according to whether the first service area needs to perform location verification on the accessed terminal device, including: In a case where the first service area does not require location verification for the accessed terminal device, the second communication device determines to accept access by the first communication device; In a case where the first service area requires location verification of the accessed terminal device and the first communication device supports location verification, the second communication device determines to accept access by the first communication device; In a case where the first service area requires location verification for the accessed terminal device and the first communication device does not support location verification, the second communication device determines to reject access of the first communication device; The second communication device determines, according to whether the first service area requires location verification, a service type provided for the first communication device, including: In a case where the first service area does not require location verification for the accessed terminal device, the second communication device determines to provide the first communication device with a service of the first service type; In a case where the first service area requires location verification of the accessed terminal device and the first communication device supports location verification, the second communication device determines to provide the first communication device with a service of the first service type; In a case where the first service area requires location verification of the accessed terminal equipment and the first communication device does not support location verification, the second communication device determines to provide a second service type of service for the first communication device.

10. The method according to claim 8 or 9, characterized in that The method further comprises: The second communication device sends a first message to the first communication device, wherein the first message includes one or more of first indication information for indicating whether the first service area needs to perform location verification on the accessed terminal device, public land mobile network PLMN information corresponding to the first service area, and the location of a reference point of the first service area.

11. The method according to claim 9, characterized in that Before the second communication device determines whether to accept access of the first communication device or determines the type of service provided to the first communication device according to whether the first service area needs to perform location verification on the accessed terminal device, the method further includes: The second communication device receives first information from the first communication device, where the first information is used to indicate whether the first communication device supports location verification.

12. The method according to claim 11, characterized in that The first information includes information on whether the first communication device supports location verification and / or a version number supported by the first communication device, wherein the version number is used to determine whether the first communication device supports location verification.

13. A communication device, characterized in that: include: A communication unit for receiving and sending information; A processing unit, configured to execute, through the communication unit, the method as claimed in any one of claims 1-7 or 8-12.

14. A communication device, characterized in that: Comprising a processor, the processor is used to execute the method as described in any one of claims 1-7 or 8-12.

15. A communication system, characterized in that: include: A first communication device, configured to execute the method according to any one of claims 1 to 7; The second communication device is configured to execute the method according to any one of claims 8 to 12.

16. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program or instruction. When the computer program or instruction is executed by the communication device, the method according to any one of claims 1 to 7 or 8 to 12 is implemented.

17. A chip, characterized in that: The chip reads the computer program stored in the memory and executes the method according to any one of claims 1-7 or 8-12.

18. A computer program product, characterized in that The computer program product comprises: a computer program code, and when the computer program code is executed, the method according to any one of claims 1 to 7 or 8 to 12 is implemented.

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