Access method and apparatus

Abstract

The present application relates to the technical field of communications, and discloses an access method and an apparatus, for reducing unnecessary location verification when a terminal device performs access, and reducing the access failure probability of the terminal device. The method comprises: a terminal device determines whether location verification needs to be performed on a terminal device that has accessed one or more servicing areas; and the terminal device initiates access to a first servicing area, wherein the first servicing area belongs to the one or more servicing areas, and the first servicing area is a servicing area in which location verification does not need to be performed on the terminal device that has accessed the servicing area.

Description

Access method and device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on August 21, 2023, with application number 202311057813.X and application name “A Method and Device for Access”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of communication technology, and in particular to an access method and device. Background Art

[0004] Non-terrestrial networks (NTNs), such as satellites, offer advantages such as wide coverage, long communication distances, high reliability, flexibility, high throughput, and immunity to geographical factors, climate conditions, and natural disasters. They have been widely adopted in aviation, maritime, and military communications. The introduction of NTNs into mobile communication systems, such as the fifth-generation (5G) system, not only provides communication services in areas difficult to reach by terrestrial networks, such as oceans and forests, but also enhances communication reliability, providing more stable and high-quality communication services for users on trains, airplanes, and other modes of transportation, and providing more data transmission resources, such as supporting the connection of a larger number of terminal devices.

[0005] Currently, NTN communications have been introduced in the 3rd Generation Partnership Project (3GPP) standards. However, the beam coverage of satellites and other network equipment is often relatively large, potentially covering multiple countries. Laws and regulations in different countries may vary, so satellites and other network equipment are required to verify the location of terminal devices. However, some terminal devices do not support location verification due to capabilities and other reasons, making them unable to access.

[0006] Summary of the Invention

[0007] The embodiments of the present application provide an access method and apparatus to reduce unnecessary location verification during terminal device access and reduce the probability of failure in terminal device access.

[0008] On 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 require location verification for 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 the 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, etc.

[0009] Through the above method, the service area can be divided into service areas that require location verification for the accessed terminal devices and service areas that do not require location verification for the accessed terminal devices according to whether the service area crosses geographical areas (such as countries or regions, etc.). For the first communication device (such as 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 caused by access failure.

[0010] In addition, in the above method, the granularity of location verification for accessed terminal devices can 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.

[0011] 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.

[0012] 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 from the set of candidate service areas that meet the access (or residence) requirements. This can avoid the first communication device from selecting the second service area that requires location verification for the accessed terminal device to initiate access, reduce the failure probability of access of the first communication device that does not support location verification, and reduce the power consumption of the first communication device caused by access failure.

[0013] 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.

[0014] Through the above design, it supports explicit indications such as the first indication information, as well as implicit indications such as PLMN information and the location of the reference point, to indicate whether the service area needs to perform location verification on the accessed terminal device, which is conducive to the terminal device accurately knowing whether the service area needs to perform location verification on the accessed terminal device.

[0015] In one possible design, the first message includes PLMN information corresponding to the first service area, and the first communication device determines, based on the first message, whether the first service area needs to perform location verification on the accessed terminal device, 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.

[0016] Through the above design, the first communication device can obtain information about 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, which can reduce signaling overhead.

[0017] In one possible design, the first message includes the location of the reference point of the first service area, and the first communication device determines, based on the first message, whether the first service area needs to perform location verification on the accessed terminal device, including: when the distance between the reference point of the first service area and the boundary of the 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 the accessed terminal device.

[0018] Through the above design, the first communication device is supported to select a service area for access based on the location of the reference point of 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 access terminal device to initiate access, reduce the failure probability of the first communication device that does not support location verification, and reduce the power consumption of the first communication device caused by access failure.

[0019] In one possible design, the first communication device determines whether one or more service areas need to perform location verification on the accessed terminal device, including: the first communication device determines the distance between the reference point of each candidate service area in the candidate service area set and the boundary between the geographical area; the first communication device determines that the N candidate service areas in the candidate service area set with the smallest distance between the reference point and the boundary between the geographical area need to perform location verification on the accessed terminal device, and the MN candidate service areas other than the N 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.

[0020] Through the above design, the first communication device is supported to select a service area for access based on the location of the reference point of the service area and the distance across the boundary of the geographical area, which is conducive to the first communication device selecting 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.

[0021] On 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.

[0022] Through the above method, the service area can be divided into service areas that require location verification of the accessed terminal devices and service areas that do not require location verification of the accessed terminal devices 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 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 devices.

[0023] In one possible design, the second communication device determines whether to accept access of the first communication device based on whether the first service area requires location verification for the accessing terminal device, including: if the first service area does not require location verification for the accessing terminal device, the second communication device determines to accept access of the first communication device; if the first service area requires location verification for the accessing terminal device and the first communication device supports location verification, the second communication device determines to accept access of the first communication device; if the first service area requires location verification for the accessing 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 provide for the first communication device based on whether the first service area requires location verification, including: if the first service area does not require location verification for the accessing terminal device, the second communication device determines to provide the first communication device with a first service type of service; if the first service area requires location verification for the accessing 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; if the first service area requires location verification for the accessing terminal device and the first communication device supports location verification, the second communication device determines to provide the first communication device with a second service type of service; if the first service area requires location verification for the accessing 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.

[0024] 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.

[0025] 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.

[0026] 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 the reference point of the first service area.

[0027] Through the above design, it supports explicit indications such as the first indication information, as well as implicit indications such as PLMN information and the location of the reference point, to indicate whether the service area needs to perform location verification on the accessed terminal device, which is conducive to the terminal device accurately knowing whether the service area needs to perform location verification on the accessed terminal device.

[0028] 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 requires location verification of 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.

[0029] 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.

[0030] In a third aspect, embodiments of the present application provide a communication device having the functionality to implement the method of the first or second aspect described above. The functionality may be implemented through hardware or through hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the functionality described above, such as a communication unit and a processing unit.

[0031] In a fourth aspect, an embodiment of the present application provides a communication device, comprising a processor, which is used to execute the methods described in the above aspects.

[0032] 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 instructions, or storing data generated after the processor executes 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 memory are integrated together).

[0033] In a possible implementation, the communication device is a chip.

[0034] In the 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.

[0035] In the sixth aspect, an embodiment of the present application further provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is executed by a communication device, the communication device executes the method provided in the first or second aspect above.

[0036] 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 by a processor), can implement the method of the first or second aspect described above.

[0037] 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.

[0038] Optionally, the chip is coupled to a memory, or the memory is part of the chip.

[0039] In a 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.

[0040] In one possible design, the chip system further includes a memory for storing programs and data necessary for the computer device. The chip system can be composed of a chip or include a chip and other discrete devices.

[0041] 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 aspects mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] FIG1 is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application;

[0043] Figures 2A, 2B, and 2C are schematic diagrams of communication scenarios provided in embodiments of the present application;

[0044] FIG3 is a schematic diagram of one of the access methods provided in an embodiment of the present application;

[0045] FIG4 is a schematic diagram of cell distribution provided in an embodiment of the present application;

[0046] FIG5 is a schematic diagram of a terminal device initiating access according to an embodiment of the present application;

[0047] FIG6 is a second schematic diagram of a terminal device initiating access according to an embodiment of the present application;

[0048] FIG7 is a second schematic diagram of an access method provided in an embodiment of the present application;

[0049] FIG8 is a schematic diagram of a structure of a communication device according to an embodiment of the present application;

[0050] FIG9 is a second schematic diagram of the structure of the communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as 5G communication systems, NTN communication systems, etc., and can also be applied to communication systems that have evolved after 5G, such as the sixth generation (6G) communication system. As shown in Figure 1, an architectural schematic diagram of a communication system provided in an embodiment of the present application is provided. The communication system includes network devices and terminal devices, where 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 number of terminal devices and network devices in the communication system shown in Figure 1 is not limited in the embodiments of the present application.

[0052] The terminal device, which can also be referred to as a terminal, user equipment (UE), mobile station (MS), or mobile terminal, is a device or equipment with wireless communication capabilities. Terminal devices can be widely used in various scenarios, such as machine type communication (MTC), the Internet of Things (IoT), vehicle to everything (V2X), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, and smart cities. A terminal device can be a subscriber unit (SUU), a cellular phone, a smartphone, a wireless data card, a personal digital assistant (PDA), a computer, a tablet, a wireless modem, a handheld device, a laptop computer, customer-premises equipment (CPE), a smart point of sale (POS), a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a robotic arm, smart home devices, MTC equipment, a ground station, and the like. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0053] The above-mentioned network equipment, which can also be referred to as access network (AN) equipment or radio access network (RAN) equipment, is a device or equipment that can be deployed in a radio access network to provide wireless communication functions for terminal devices. Network equipment can be base stations used for wireless communication, such as artificial earth satellites and high-altitude aircraft, such as medium earth orbit (MEO) satellites in non-geostationary earth orbit (NGEO), low earth orbit (LEO) satellites, high altitude platform stations (HAPS), evolved NodeBs (eNBs), and 5G base stations (gNBs). Optionally, the network devices in the embodiments of the present application may include various forms of base stations, such as: macro base stations, micro base stations (also known as small stations), relay stations, access points, devices that implement base station functions in communication systems evolved after 5G, transmission points (transmitting and receiving points, TRP), transmission 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 radio access network (C-RAN) systems. The embodiments of the present application do not specifically limit this.

[0054] Taking the network device as a satellite as an example, the communication scenarios of the specific application of the embodiment of the present application can be shown in Figures 2A, 2B and 2C.

[0055] In the scenario shown in Figure 2A, a base station is deployed on the ground. The satellite is connected to the ground station via an air interface, and the ground station can be connected to the base station via a wireless or wired link. Terminal devices on the ground access the mobile communication network via an air interface (which can be any type of air interface, such as a 5G air interface). The satellite acts as a transmission node, forwarding information from the terminal devices.

[0056] In the scenario shown in Figure 2B, a base station is deployed on a satellite. The satellite connects to a ground station via an air interface, and the ground station can connect to the core network via wireless or wired links. Terminal devices on the ground communicate with the satellite base station via the air interface, thereby accessing the mobile communication network. The satellite, acting as a base station, connects to the ground station via an air interface NG interface, and the ground station connects to the core network via an NG interface, which can be either wireless or wired.

[0057] Compared with the scenario shown in FIG. 2B , the scenario shown in FIG. 2C adds a communication scenario between satellite base stations. Specifically, the satellite base stations can communicate with each other through an Xn interface.

[0058] In Figures 2A-2C, the terminal devices may include various types of terminal devices supporting the new air interface, such as the various types of terminals listed above. The terminal devices may access the satellite network through the air interface and initiate calls, access the Internet, and other services.

[0059] Base stations are mainly used to provide wireless access services, dispatch wireless resources to access terminal devices, and provide reliable wireless transmission protocols and data encryption protocols.

[0060] The core network is primarily responsible for providing 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 control plane and data plane functional entities.

[0061] 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.

[0062] Air interface: refers to the wireless link between the terminal device and the base station.

[0063] Xn interface: represents the interface between satellite base stations, mainly used for signaling interaction such as switching.

[0064] 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). It mainly exchanges signaling such as the non-access stratum (NAS) of the core network and user service data.

[0065] Because the beam coverage of non-terrestrial network equipment such as satellites is often relatively large, potentially covering areas of multiple countries, and because laws and regulations may differ between countries, when a terminal device selects or reselects a cell and initiates access, satellites and other non-terrestrial network equipment need to know the terminal device's location. Depending on the terminal device's location, different laws and regulations may apply or services may be provided. Unlike terrestrial communications, where network equipment such as ground base stations can directly locate terminal devices, in NTN communications, terminal devices report their own locations, which are then verified by non-terrestrial network equipment such as satellites. However, because location verification for NTN communications was recently introduced in Release 18 of the 3GPP standard, existing terminal devices do not support location verification. This results in these terminal devices being unable to access NTN cells using satellites and other technologies due to the lack of location verification support.

[0066] Based on this, the present application provides an access method and apparatus to reduce unnecessary location verification when a terminal device accesses the device, thereby reducing the probability of failure in accessing the terminal device.

[0067] Furthermore, it should be understood that ordinal numbers such as "first" and "second" in the embodiments of this application are used to distinguish between multiple objects and are not used to define the size, content, order, timing, priority, or importance of the multiple objects. For example, the first service area and the second service area do not indicate a difference in priority or importance between the two service areas.

[0068] 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 there may be three relationships. 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 items" or similar expressions refers to any combination of these items, including any combination of single items 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.

[0069] The access method provided in the embodiments of this application can be performed by a first communication device and a second communication device. Here, the first communication device 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 following describes the access method provided in this application, taking the first communication device and the second communication device as an example, respectively, to describe the first and second terminal devices.

[0070] FIG3 is a schematic diagram of an access method provided in an embodiment of the present application, the method comprising:

[0071] S301: The terminal device determines whether one or more service areas require location verification for the connected terminal device.

[0072] In a communication system, a network device can include one or more cells, or in other words, a network device can serve one or more cells. Taking satellite 1 as an example, referring to the cell distribution diagram shown in Figure 4, satellite 1 includes cells 1 and 2, and can provide services to terminal devices located in cells 1 and 2.

[0073] 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 needs 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.

[0074] 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 one 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 one 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 one geographical area respectively.

[0075] In the embodiments of the present application, the service areas of network devices can be divided into two types: one is a service area whose coverage includes (or involves) multiple geographical areas and requires location verification of connected terminal devices; the other is a service area whose coverage includes (or involves) only one geographical area and does not require location verification of connected terminal devices. The service area can be the 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, etc.

[0076] Taking the service area as a cell as an example, referring to the cell distribution diagram shown in Figure 4, 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 device; 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 device and determine the geographical area where the terminal device is located, so as to provide the terminal device with services that comply with the laws and regulations of the geographical area where the terminal device is located.

[0077] Whether a service area requires location verification for an accessing terminal device may be determined by the terminal device based on a first message from a network device corresponding to the service area. The first message may include one or more of first indication information indicating whether the first service area spans a geographical area, PLMN information corresponding to the first service area, and the location of a reference point in the first service area. This will be described below with reference to a specific implementation.

[0078] In one possible implementation, the network device can send a first message through broadcasting or multicasting, and 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.

[0079] 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.

[0080] 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.

[0081] 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. The terminal device can determine that the first beam SSB3 needs to perform location verification on the accessed terminal device based on 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).

[0082] 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 for the accessed terminal device based on the PLMN information corresponding to the first service area.

[0083] Currently, 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 that 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 that 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.

[0084] 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.

[0085] 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 requires location verification of the accessed terminal device based on the location of the reference point of the first service area.

[0086] 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 accessed 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 the first threshold.

[0087] For example: if the distance between the reference point of the cell and the cross-geographical region boundary is less than or equal to a first threshold, the terminal device determines that the cell (i.e., the first service area) requires location verification for the accessed terminal device; if the distance between the reference point of the cell and the cross-geographical region boundary is greater than the first threshold, the terminal device determines that the cell (i.e., the first service area) does not require location verification for the accessed terminal device. The cross-geographical region boundary may be pre-configured in the terminal device, may be sent to the terminal device by a network device, etc., or may be obtained by the terminal device through a map application (APP) in the terminal device, and this application does not limit this.

[0088] In addition, the above implementations are all introduced using the example of the first service area being the coverage area of ​​a certain cell or beam. 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.

[0089] 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 cell among the one or more cells corresponding to the first service area needs 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, it determines that the first service area does not need to perform location verification on the accessed terminal device.

[0090] 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; when multiple beams do 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.

[0091] S302: The terminal device initiates access to the first service area. Accordingly, the network device receives the access initiated by the terminal device in the first service area.

[0092] Among them, the first service area is a service area that does not require location verification of the accessed terminal device.

[0093] In one possible implementation, when a terminal device performs cell selection, reselection, or switching, one or more service areas that meet the access (or residence) requirements can be used as candidate service areas for initiating access, and the candidate service areas can be screened based on whether the service area requires location verification of the accessed terminal device.

[0094] For example: the terminal device can move out of one or more second service areas where location verification of the accessed terminal device is required 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 where location verification of the accessed terminal device is not required to initiate access.

[0095] 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.

[0096] Taking the service area as a cell and the terminal device as a terminal device that does not support location verification as an example, as shown in Figure 5, the candidate cell set that meets the terminal device access (or residence) requirements includes cell 1 and cell 2, where cell 2 needs to perform location verification on 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.

[0097] As shown in Figure 6, 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 of 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 of the accessed terminal device to initiate access.

[0098] In some implementations, the terminal device may further 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.

[0099] 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 between the geographical areas 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 between the geographical areas among the M candidate service areas require location verification for the accessed terminal device, or are candidate service areas that are not recommended for access. The terminal device can select the 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.

[0100] In some implementations, if there is a corresponding access (or residence) priority for the candidate service area in the candidate service area set, the terminal device can also select the 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.

[0101] As an example: the set of candidate service areas includes service area 1 and service area 2. Service area 1 requires location verification for accessing terminal devices, while service area 2 does not. The access priority of the service areas is determined according to the signal quality of the service areas. 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 a terminal device selects a service area to initiate access, unlike under normal conditions where the terminal device selects service area 1 to initiate access, the terminal device may prioritize service area 2, which does not require location verification for accessing terminal devices, when considering whether the service area requires location verification for accessing terminal devices.

[0102] In addition, it can be understood that if the 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 are all required to perform location verification for the accessed terminal device. The terminal device may also not perform cell selection, reselection or switching, and wait for the terminal device to change its location before trying cell selection, reselection or switching.

[0103] As an example: the terminal device resides in service area 3. If the candidate service areas that meet the access (or residency) requirements determined by the terminal device only include service area 2, and service area 2 requires location verification for the accessed terminal device, the terminal device may not switch.

[0104] 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 terminal device.

[0105] In a possible implementation, the network device may determine whether to accept access by the terminal device based on whether the first service area requires location verification for the accessing terminal device.

[0106] 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.

[0107] In the case where location verification is required for an accessing terminal device in the first service area, if the terminal device supports location verification, the network device may determine to accept the access initiated by the terminal device to the first service area, and after the location verification of the terminal device is passed, may 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.

[0108] In the case where the first service area requires location verification for 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.

[0109] 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 based on whether the first service area requires location verification for the accessed terminal device.

[0110] As an example: when the location verification of the accessed terminal device is not required in the first service area, the network device determines to provide the terminal device with a service of the first business type.

[0111] In the case that location verification is required for the accessed terminal device in the first service area, if the terminal device supports location verification, the network device determines to provide the terminal device with a service of the first business type.

[0112] In the case that the location verification of the accessed terminal device is required 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 business type.

[0113] 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.

[0114] 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 for 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 from registering 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: it can only be provided with emergency call services, and cannot provide service types other than emergency calls.

[0115] 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.

[0116] The information on whether the terminal device supports location verification can be determined by the network device based on 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.

[0117] 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. The network device can determine that the terminal device does not support location verification.

[0118] In an embodiment of the present application, access methods in which the terminal device does not first verify the information can also be supported, 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.

[0119] 7 is a schematic diagram of another access method provided in an embodiment of the present application, the method comprising:

[0120] S701: The terminal device initiates access to the first service area. Accordingly, the network device receives the access request initiated by the terminal device to the first service area.

[0121] S702: 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 terminal device that accesses the terminal device.

[0122] In an embodiment of the present application, when a terminal device initiates access, it is possible to ignore the factor of whether the service area initiating access requires location verification of the accessed terminal device. The network device corresponding to the service area initiating 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 access by the terminal device requires location verification of the accessed terminal device.

[0123] In a possible implementation, the network device may determine whether to accept access by the terminal device based on whether the first service area requires location verification for the accessing terminal device.

[0124] 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.

[0125] In the case where location verification is required for an accessing terminal device in the first service area, if the terminal device supports location verification, the network device may determine to accept the access initiated by the terminal device to the first service area, and after the location verification of the terminal device is passed, may 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.

[0126] In the case where the first service area requires location verification for 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.

[0127] 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 based on whether the first service area requires location verification for the accessed terminal device.

[0128] As an example: when the location verification of the accessed terminal device is not required in the first service area, the network device determines to provide the terminal device with a service of the first business type.

[0129] In the case that location verification is required for the accessed terminal device in the first service area, if the terminal device supports location verification, the network device determines to provide the terminal device with a service of the first business type.

[0130] In the case that the location verification of the accessed terminal device is required 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 business type.

[0131] 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.

[0132] The information on whether the terminal device supports location verification can be determined by the network device based on 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.

[0133] 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. The network device can determine that the terminal device does not support location verification.

[0134] The following describes the communication device provided in an embodiment of the present application. Please refer to Figure 8, which is a schematic diagram of the structure of the communication device in an embodiment of the present application. The communication device may include units or modules corresponding to all or part of the steps in the above-mentioned method embodiment, and may be used to execute the steps executed by the first communication device (e.g., terminal device) or the second communication device (e.g., second terminal device) in the above-mentioned embodiment. For details, please refer to the relevant description in the above-mentioned method embodiment.

[0135] As shown in Figure 8, communication device 800 includes a processing unit 810 and a communication unit 820. Processing unit 810 may be a processor or processing circuit, and communication unit 820 may be a transceiver unit or input / output interface. Communication device 800 may be used to implement the steps performed by the first communication device or the second communication device.

[0136] 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:

[0137] The processing unit 810 is configured to determine whether one or more service areas require location verification for an accessed terminal device;

[0138] The communication unit 820 is used to initiate access to the 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 the accessed terminal device.

[0139] 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 also used to move at least one second service area out of the set of candidate service areas 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.

[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 receive a first message through the communication unit 820, the first message including one or more of 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 the location of a reference point of the first service area; and based on the first message, determine whether the first service area needs to perform location verification on an accessed terminal device.

[0141] In one possible design, the first message includes PLMN information corresponding to the first service area. When 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, it is specifically used to determine that the first service area does not need to perform location verification on the accessed terminal device when the first service area corresponds to a PLMN in a geographical area.

[0142] In one possible design, the first message includes the location of the reference point of the first service area. When 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, it is specifically used to determine that the first service area does not need to perform location verification on the accessed terminal device when the distance between the reference point of the first service area and the boundary of the cross-geographic area is greater than a first threshold.

[0143] 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.

[0144] In one possible design, the first communication device does not support location verification.

[0145] 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:

[0146] The communication unit 820 is configured to receive an access request initiated by a first communication device to a first service area;

[0147] The processing unit 810 is configured to determine whether to accept access by the first communication device or determine a service type to be provided to the first communication device according to whether the first service area requires location verification for the accessed terminal device.

[0148] 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, it 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.

[0149] In one possible design, when the processing unit 810 determines the service type to be provided to the first communication device based on whether the first service area requires location verification of the accessed terminal device, it is specifically used to: determine to provide the first communication device with the first service type of service when the first service area does not require location verification of the accessed terminal device; determine to provide the first communication device with the first service type of service when the first service area requires location verification of the accessed terminal device and the first communication device supports location verification; determine to provide the first communication device with the second service type of service when the first service area requires location verification of the accessed terminal device and the first communication device does not support location verification.

[0150] 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 the reference point of the first service area.

[0151] 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.

[0152] 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, where the version number is used to determine whether the first communication device supports location verification.

[0153] As shown in Figure 9, the present application also provides a communication device 900, which includes 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 is understandable 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 further include a memory 930 for storing instructions executed by the processor 910 or storing input data required by the processor 910 to run instructions or storing data generated after the processor 910 runs instructions. The memory 930 may be a physically independent unit, or may be coupled to the processor 910, or the processor 910 may include the memory 930.

[0154] 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.

[0155] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or may be 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.

[0156] 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 write information to the storage medium. Of course, the storage medium can also be an integral part 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.

[0157] In the above embodiments, all or part of the embodiments can be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments can be implemented 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 instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer can 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 instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer program or instructions can be transmitted from one network device, terminal, computer, server, or data center to another network device, terminal, computer, server, or data center via wired or wireless means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; it can also be an optical medium, such as a digital video disk; or it can be a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0158] In the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0159] Furthermore, it should be understood that in the embodiments of this application, the word "exemplary" is used to indicate an example, illustration, or description. Any embodiment or design described in this application as "exemplary" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the word "exemplary" is intended to present concepts in a concrete manner.

[0160] It is understood that the various numbers used in the embodiments of this application are merely for ease of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not necessarily imply a specific order of execution; the order of execution of the processes should be determined by their functions and inherent 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 the first service area, the location verification of the accessed terminal device is required, and the first communication device does not support location verification In the case of the second communication device determining to deny 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 the method according to any one of claims 1 to 7, or execute the method according to any one of claims 8 to 12, through the communication unit.

14. A communication device, characterized in that: The method comprises at least one processor, wherein the at least one processor is used to execute the method according to any one of claims 1 to 7, or to execute the method according to any one of claims 8 to 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 is implemented, or the method according to any one of claims 8 to 12 is implemented.

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

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