WO2023066071A1 - Location information processing method and apparatus - Google Patents

Abstract

Disclosed in the present application are a location information processing method and apparatus. The method comprises: acquiring location information of a terminal device; determining coarse location information of the terminal device according to the location information of the terminal device; sending first information, wherein the first information comprises the coarse location information of the terminal device and first indication information, and the first indication information is used for indicating a unique TAC corresponding to a location indicated by the location information of the terminal device; and an access network device receiving the first information, and determining second information according to the first information, wherein the second information comprises a TAC corresponding to the terminal device and/or an NG interface cell global identifier (CGI) corresponding to the terminal device. By means of the embodiments of the present application, an access network device can obtain a unique TAC, and sends the unique TAC and/or a unique NG interface CGI to an AMF, thereby guaranteeing the smooth execution of an access management process of the AMF.

Description

Location information processing method and device

This application claims the priority of the Chinese patent application with the application number 202111228401.9 and the application name "Position Information Processing Method and Device" submitted to the China Patent Office on October 21, 2021, the entire contents of which are incorporated in this application by reference.

technical field

The present application relates to the field of communication technologies, and in particular to a location information processing method and device.

Background technique

Tracking Area (TA) is a concept established by long term evolution (long term evolution, LTE) system or new air interface (new radio, NR) system for the location management of terminal equipment (user equipment, UE). It is defined as a free movement area in which the UE does not need to update the service. In a TA of a UE, one or more tracking area codes (tracking area code, TAC) may be included. In the terrestrial network (TN), TAC is a cell-level configuration. Multiple cells can be configured with the same TAC, and a cell can only belong to the area corresponding to one TAC. A corresponding TAC may correspond to one or more Global cell identifier (cell global identifier, CGI). TAC and public land mobile network (PLMN) together form a tracking area identity (TAI), that is, TAI=PLMN+TAC. Multiple TAIs form a TAI list (TA List) and are assigned to a UE at the same time. When the UE moves in the TAI list, it does not need to perform TA update (TA update, TAU) to reduce frequent interaction with the network; when the UE enters the absence When registering an area in the TAI list, TAU needs to be executed, and the core network reassigns a set of TAIs to the UE. The newly allocated TAI can also include some TAIs in the original TAI list; in addition to this situation, the UE will periodically Do TAU to let the core network know the location of the UE.

In the NTN network, due to the large coverage of the cell, one cell may have areas corresponding to one or more TACs, and a corresponding CGI may correspond to multiple TACs. Therefore, in the NTN network, in order to maintain the CGI operation mechanism in the TN network, the base station will do a mapping to map the CGI with a larger range (called UU interface CGI) to a CGI with a smaller range (called NG interface CGI ), so that one TAC corresponds to one or more NG interfaces CGI.

The UE may determine its own precise geographic location and a coarse location (coarse location) corresponding to the precise geographic location, where the coarse location is obtained by losing precision (for example, expressing bits, etc.) to the precise geographic location. Before the security activation, the UE reports the rough location to the base station (gNB), and the gNB determines the TAC where the UE is located, or further determines the corresponding NG interface CGI of the UE within the range of the TAC, and reports the NG interface CGI and/or TAC Give access and mobility management function (access and mobility management function, AMF), so that AMF can do UE access management accordingly.

However, the coarse location reported by the UE before security activation may span multiple TACs, resulting in the gNB being unable to determine the unique TAC corresponding to the UE and/or the unique NG interface CGI corresponding to the UE based on the coarse location, thus making it impossible for the AMF to determine the unique TAC and/or The only NG interface CGI is used for UE access management.

Contents of the invention

The embodiment of the present application provides a location information processing method and device, so that the access network equipment can obtain the unique TAC or the unique NG interface CGI corresponding to the terminal equipment, and send the unique TAC or the unique NG interface to the core network element CGI ensures the smooth implementation of the access management process of the core network element to the terminal equipment.

In a first aspect, a location information processing method is provided, the method comprising: acquiring location information of a terminal device; determining rough location information of the terminal device according to the location information of the terminal device; sending first information, the first information including the rough location information of the terminal device The location information, and the first indication information, the first indication information is used to indicate the unique TAC corresponding to the location indicated by the location information of the terminal device; or the first information includes the adjusted rough location information, and the adjusted rough location information indicates the location Corresponds to a unique TAC.

In the embodiment of the present application, by determining the unique TAC corresponding to the precise location of the terminal device and the rough location information corresponding to the precise location of the terminal device, and sending the first indication information and rough location information corresponding to the unique TAC to the access network device , so that the access network device determines the unique TAC or the unique NG interface CGI corresponding to the terminal equipment, and then sends the unique TAC and/or the unique NG interface CGI to the AMF, so as to ensure the smooth execution of the access management process of the terminal equipment by the AMF.

In an optional example, before sending the first location information, the method further includes: determining that the tracking area code TAC corresponding to the location indicated by the rough location information of the terminal device is greater than one.

In an optional example, one TAC corresponds to one area.

In an optional example, determining that the location indicated by the rough location information of the terminal device corresponds to more than one tracking area code TAC includes: determining the area corresponding to the target TAC to which the location indicated by the location information of the terminal device belongs; Whether the location indicated by the coarse location information exceeds the range of the area corresponding to the target TAC; if the location indicated by the coarse location information of the terminal device exceeds the range of the area corresponding to the target TAC, determine that the TAC corresponding to the location indicated by the coarse location information of the terminal device is greater than one.

In an optional example, determining that the location indicated by the rough location information of the terminal device corresponds to more than one tracking area code TAC includes: comparing the location indicated by the rough location information of the terminal device with the areas corresponding to multiple TACs, and determining Whether the location indicated by the rough location information of the terminal device intersects with the area corresponding to more than one TAC in the area corresponding to multiple TACs; If the areas overlap, it is determined that the TAC corresponding to the location indicated by the rough location information of the terminal device is more than one.

In an optional example, the method further includes: determining that the location indicated by the location information of the terminal device is within the first area; adjusting the location indicated by the location information of the terminal device to obtain adjusted location information; The information determines the adjusted rough location information; or adjusts the location indicated by the rough location information of the terminal device to obtain the adjusted rough location information.

In an optional example, the method further includes: determining that the position indicated by the rough information of the terminal device intersects with multiple first areas; adjusting the position indicated by the position information of the terminal device, obtaining the adjusted position information, and The adjusted location information determines the adjusted rough location information; or adjusts the location indicated by the rough location information of the terminal device to obtain the adjusted rough location information.

In the embodiment of the present application, the first area is directly determined, and the relationship between the precise position or rough position of the terminal device and the first area is used as the judgment condition for whether to adjust the precise position or rough position, so that the judgment process is clear and fast, and the Improve the efficiency of obtaining the adjusted coarse position information.

In a second aspect, a location information processing method is provided, the method includes: receiving first information, the first information includes rough location information of the terminal device, and first indication information, the first indication information is used to indicate the location information of the terminal device The unique TAC corresponding to the indicated location; determine the second information according to the first information, and the second information includes the TAC corresponding to the terminal device and/or the NG interface global cell identity CGI corresponding to the terminal device; send to the access and mobility management function AMF second information.

In an optional example, if the second information includes the TAC corresponding to the terminal device, determining the second location information according to the first information includes: determining the unique TAC corresponding to the location indicated by the location information of the terminal device according to the first indication information, The unique TAC corresponding to the location indicated by the location information of the terminal device is used as the TAC corresponding to the terminal device.

In an optional example, if the second information includes the NG interface CGI corresponding to the terminal device, the second location information is determined according to the first information, including: the location indicated by the rough location information of the terminal device, and the location information of the terminal device The unique TAC corresponding to the indicated location identifies the NG interface CGI.

In a third aspect, a communication device is provided, which includes: a processing unit configured to acquire location information of a terminal device, and determine rough location information of the terminal device according to the location information of the terminal device; a sending unit configured to send first information, The first information includes rough location information of the terminal device, and first indication information, the first indication information is used to indicate the unique TAC corresponding to the location indicated by the location information of the terminal device; or the first information includes the adjusted coarse location information, adjusted The location indicated by the subsequent coarse location information corresponds to a unique TAC.

In an optional example, before sending the first location information, the processing unit is further configured to: determine that the tracking area code TAC corresponding to the location indicated by the rough location information of the terminal device is greater than one.

In an optional example, one TAC corresponds to one area.

In an optional example, determining that the location indicated by the rough location information of the terminal device corresponds to more than one tracking area code TAC includes: determining the area corresponding to the target TAC to which the location indicated by the location information of the terminal device belongs; Whether the location indicated by the coarse location information exceeds the range of the area corresponding to the target TAC; if the location indicated by the coarse location information of the terminal device exceeds the range of the area corresponding to the target TAC, determine that the TAC corresponding to the location indicated by the coarse location information of the terminal device is greater than one.

In an optional example, determining that the location indicated by the rough location information of the terminal device corresponds to more than one tracking area code TAC includes: comparing the location indicated by the rough location information of the terminal device with the areas corresponding to multiple TACs, and determining Whether the location indicated by the rough location information of the terminal device intersects with the area corresponding to more than one TAC in the area corresponding to multiple TACs; If the areas overlap, it is determined that the TAC corresponding to the location indicated by the rough location information of the terminal device is more than one.

In an optional example, the processing unit is further configured to: determine that the location indicated by the location information of the terminal device is within the first area; adjust the location indicated by the location information of the terminal device to obtain adjusted location information; The location information determines the adjusted rough location information; or adjusts the location indicated by the rough location information of the terminal device to obtain the adjusted rough location information.

In an optional example, the processing unit is further configured to: determine that the position indicated by the rough information of the terminal device intersects with multiple first areas; adjust the position indicated by the position information of the terminal device to obtain adjusted position information, and Determine the adjusted rough location information according to the adjusted location information; or adjust the location indicated by the rough location information of the terminal device to obtain the adjusted rough location information.

In a fourth aspect, a communication device is provided, which includes: a receiving unit, configured to receive first information, the first information includes rough location information of the terminal device, and first indication information, the first indication information is used to indicate the terminal device The unique TAC corresponding to the position indicated by the position information; the processing unit is configured to determine the second information according to the first information, and the second information includes the TAC corresponding to the terminal device and/or the NG interface global cell identity CGI corresponding to the terminal device; the sending unit , for sending the second information to the access and mobility management function AMF.

In an optional example, if the second information includes the TAC corresponding to the terminal device, determining the second location information according to the first information includes: determining the unique TAC corresponding to the location indicated by the location information of the terminal device according to the first indication information, The unique TAC corresponding to the location indicated by the location information of the terminal device is used as the TAC corresponding to the terminal device.

In an optional example, if the second information includes the NG interface CGI corresponding to the terminal device, the second location information is determined according to the first information, including: the location indicated by the rough location information of the terminal device, and the location information of the terminal device The unique TAC corresponding to the indicated location identifies the NG interface CGI.

In a fifth aspect, the embodiment of the present application provides a communication device, the device includes a communication interface and at least one processor, and the communication interface is used for the device to communicate with other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module or other types of communication interface. At least one processor is used to call a set of programs, instructions or data to execute the method described in the first or second aspect above. The device may also include a memory for storing programs, instructions or data invoked by the processor. The memory is coupled to at least one processor, and when the at least one processor executes instructions or data stored in the memory, the method described in the first aspect or the second aspect above can be implemented.

In the sixth aspect, the embodiments of the present application also provide a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are run on a computer, the computer executes the computer according to the first aspect or the first aspect. The method in any possible implementation manner of the second aspect, or causing the computer to execute the method in the second aspect or any possible implementation manner of the second aspect.

In a seventh aspect, an embodiment of the present application provides a system-on-a-chip, where the system-on-a-chip includes a processor, and may also include a memory, configured to implement the method in the above-mentioned first aspect or any possible implementation manner of the first aspect, Or for implementing the second aspect above or the method in any possible implementation manner of the second aspect, the system-on-a-chip may consist of chips, or may include chips and other discrete devices.

In a possible example, the chip system further includes a transceiver.

In the eighth aspect, the embodiments of the present application also provide a computer program product, including instructions, which, when run on a computer, cause the computer to execute the method in any possible implementation manner of the first aspect or the first aspect , or cause the computer to execute the method in the second aspect or any possible implementation manner of the second aspect.

In a ninth aspect, an embodiment of the present application further provides a communication system, and the communication system may include the communication devices provided in the first aspect and the second aspect.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following will briefly introduce the drawings that are used in the embodiments.

FIG. 1A is an NTN-based RAN architecture provided by an embodiment of the present application;

FIG. 1B is another NTN-based RAN architecture provided by the embodiment of the present application;

FIG. 1C is another NTN-based RAN architecture provided by the embodiment of the present application;

FIG. 1D is another NTN-based RAN architecture provided by the embodiment of the present application;

FIG. 1E is a schematic structural diagram of an access network device provided in an embodiment of the present application;

FIG. 2A is a flow chart of a location information processing method provided in an embodiment of the present application;

FIG. 2B is a schematic diagram of a relationship between a rough location of a UE and an area corresponding to a target TAC according to an embodiment of the present application;

FIG. 2C is a schematic diagram of a relationship between a rough location of a UE and areas corresponding to multiple TACs according to an embodiment of the present application;

FIG. 3A is a flow chart of another location information processing method provided in the embodiment of the present application;

Fig. 3B is a schematic diagram of a first area provided by the embodiment of the present application;

FIG. 3C is a schematic diagram of adjusting a coarse position of a terminal device provided by an embodiment of the present application;

FIG. 3D is a schematic diagram of the distribution of a first region in the region corresponding to the TAC according to the embodiment of the present application;

FIG. 3E is a schematic diagram of adjusting the precise position of a terminal device provided by an embodiment of the present application;

FIG. 4 is a flowchart of a location information processing method provided in an embodiment of the present application;

FIG. 5 is a flow chart of an information transmission processing method provided by an embodiment of the present application;

FIG. 6 is a structural block diagram of a communication device provided by an embodiment of the present application;

FIG. 7 is a structural block diagram of a communication device provided by an embodiment of the present application;

FIG. 8 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

The terms "first", "second", "third" and "fourth" in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or modules is not limited to the listed steps or modules, but optionally also includes steps or modules that are not listed, or optionally includes For other steps or modules inherent in these processes, methods, products or devices.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

"Multiple" means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. The character "/" generally indicates that the contextual objects are an "or" relationship.

Firstly, the application scenarios of the embodiments of the present application are introduced.

The embodiment of this application can be applied to the fourth generation mobile information (the 4th generation mobile communication technology, 4G) system, the fifth generation mobile communication (5th generation mobile communication technology, 5G) system, non-terrestrial communication network (non-terrestrial network) , NTN) and future network systems and other communication systems.

The NTN-based RAN architecture can include the following five types:

(1) RAN architecture with transparent satellite transmission (NG-RAN)

As shown in FIG. 1A , an NTN-based RAN architecture provided by the embodiment of the present application has an independent base station in a transparent transmission scenario. The satellite forms a remote radio unit, which is mainly used as a physical layer relay between the terminal device and the access network device to regenerate the physical layer signal, and the high layer is invisible. Specifically, the satellite can be used for uplink and downlink directions: radio frequency filtering, frequency conversion and amplification. There is also an NTN gateway between the satellite and the access network equipment. The satellite replicates the signal of the NR-Uu interface from the serving link (between the satellite and the UE) to the feeder link (between the NTN gateway and the satellite) and vice versa. Among them, the satellite wireless interface on the feeder link carries the information of the NR-Uu interface. In other words, the satellite does not terminate or change the information of the NR-Uu interface, but only copies and forwards the information. The NTN gateway supports all necessary functions for forwarding NR-Uu port signals. The NR-Uu interface is the interface between the terminal equipment and the access network equipment in the protocol.

(2) RAN architecture for regenerative satellites without inter-satellite link (ISL)

As shown in FIG. 1B , it is another NTN-based RAN architecture provided by the embodiment of the present application. In this architecture, there is no ISL, and satellites are used as payloads processed by the base station. Wherein, the signal of the NR-Uu radio interface is transmitted on the service link between the UE and the satellite. Between the satellite and the 5G core network, there are devices such as NTN gateways, and the NG interface is responsible for information exchange. In particular, between the satellite and the NTN gateway, the NG interface is carried on the satellite wireless interface SRI and is responsible for higher-level information transmission. The NTN gateway is a transport network layer node and supports all necessary transport protocols.

(3) RAN architecture with regenerative satellites with ISL

As shown in FIG. 1C , it is another NTN-based RAN architecture provided by the embodiment of the present application. In this architecture, the same satellite is used as the payload processed by the base station. The difference from (2) is that there is an ISL, and multiple satellites can be connected through the Xn interface. Wherein, the Xn interface is carried on the inter-satellite link ISL. UEs served by a satellite gNB can access the 5G core network through ISL. The gNBs of different satellites can also be connected to the same terrestrial 5G core network.

(4) RAN architecture with regenerative satellite as gNB-DU

As shown in Figure 1D, another NTN-based RAN architecture provided by the embodiment of the present application, in this architecture, the satellite is used as a distributed unit (distributed unit, DU) in the base station, and other centralized units (central unit, CU) jointly perform base station functions. Between the distribution unit on the satellite and the centralized unit on the ground, there is an NTN gateway. NTN Gateway is a transport network layer node that supports all necessary transport protocols. The F1 interface protocol signal is transmitted in the satellite radio interface SRI of the feeder link between the satellite and the gateway. The service link between the UE and the satellite transmits NR-Uu interface protocol signals.

(5) RAN architecture with satellites as integrated access and backhaul (IAB)

In this scenario, the satellite acts as an IAB base station to handle the payload. The specific structure needs further study.

The communication system in the embodiment of the present application mainly involves network elements: terminal equipment, core network, and access network equipment. specifically:

1) Terminal equipment, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), etc., is a device that provides voice and/or data connectivity to users . For example, handheld devices with wireless connectivity, vehicle-mounted devices, etc. At present, examples of some terminals are: mobile phone (mobile phone), tablet computer, notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) device, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart grid Wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, etc.

2) An access network device refers to a wireless access network (radio access network, RAN) node (or device) that connects a terminal to a wireless network, and may also be called a base station. Currently, examples of some RAN nodes are: evolving Node B (gNB), transmission reception point (transmission reception point, TRP), evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB) , base band unit (base band unit, BBU), or wireless fidelity (wireless fidelity, Wifi) access point (access point, AP), etc. In addition, in a network structure, the access network device may include a centralized unit (centralized unit, CU) node, or a distributed unit (distributed unit, DU) node, or a RAN device including a CU node and a DU node. The RAN equipment including the CU node and the DU node splits the protocol layer of gnb in the NR system, and the functions of some protocol layers are placed in the centralized control of the CU, and the remaining part or all of the functions of the protocol layer are distributed in the DU and centralized by the CU. Control DUs. As an implementation, refer to FIG. 1E, which is a schematic structural diagram of an access network device provided in an embodiment of the present application. As shown in FIG. 1E, the CU is deployed with a radio resource control (radio Resource Control, RRC) layer, packet data convergence protocol (packet data convergence protocol, PDCP) layer, and service data adaptation protocol (service data adaptation protocol, SDAP) layer; DU is deployed with radio link control (radio link control, RLC) in the protocol stack ) layer, media access control (media access control, MAC) layer, and physical layer (physical layer, PHY). Thus, the CU has the processing capability of RRC, PDCP and SDAP. DU has the processing capability of RLC, MAC and PHY. It can be understood that the division of the above functions is only an example, and does not constitute a limitation on CUs and DUs. That is to say, there may be other ways of dividing functions between the CU and the DU, which will not be described here in this embodiment of the present application. The functions of the CU can be implemented by one entity or by different entities. For example, the functions of the CU can be further divided, for example, the control plane (CP) and the user plane (UP) are separated, that is, the control plane (CU-CP) and the CU user plane (CU-UP) of the CU. For example, the CU-CP and CU-UP can be implemented by different functional entities, and the CU-CP and CU-UP can be coupled with the DU to jointly complete the functions of the base station.

3) The core network device refers to the device in the core network (core network, CN) that provides service support for the terminal device. At present, some examples of core network equipment are: access and mobility management function (access and mobility management function, AMF) entity, session management function (session management function, SMF) entity, user plane function (user plane function, UPF) Entities, etc., are not listed here. Wherein, the AMF entity may be responsible for terminal access management and mobility management; the SMF entity may be responsible for session management, such as user session establishment; the UPF entity may be a functional entity of the user plane, mainly responsible for connecting to an external network. It should be noted that entities in this application may also be referred to as network elements or functional entities, for example, AMF entities may also be referred to as AMF network elements or AMF functional entities, and for example, SMF entities may also be referred to as SMF network elements or SMF functions entity etc.

The technical terms that may be involved in the embodiments of the present application are introduced below.

(1) NTN network, that is, satellite communication network. Generally speaking, the higher the orbit of the satellite, the larger the coverage area, but the longer the communication delay. Generally speaking, the orbits of satellites can be divided into:

a. Low earth orbit (LEO): The orbital height is 160-2000km;

b. Medium earth orbit (MEO): the orbit height is 2000-35786km;

c. Geostationary earth orbit (GEO): The orbital height is 35786km, and the relative position of the satellites in this orbit and the earth is not affected by the rotation of the earth.

Among them, low-orbit communication satellites are close to the ground, have short communication delays, and high data transmission rates. The weight and volume of mobile terminals are almost the same as personal mobile devices. They are more suitable for popularization in the mass market and have become a hot spot in current industrial development.

(2)TA

TA is a concept established by the LTE system or the NR system for UE location management. It is defined as a free movement area in which the UE does not need to update the service. The TA function can be divided into paging management and location update management in order to realize the management of the terminal location. The UE notifies the core network of its own TA through tracking area registration.

When the UE is in the idle state, the core network can know the tracking area where the UE is located. At the same time, when the UE in the idle state needs to be paged, it must perform paging in all cells in the tracking area where the UE is registered.

(3)TAC

A TA of a UE may include one or more divided areas, and each area has its corresponding tracking area code (tracking area code, TAC), that is, a TA may include one or more areas corresponding to the TAC.

In a terrestrial network (TN), TAC is a cell-level configuration, multiple cells can be configured with the same TAC, and a cell can only belong to an area corresponding to one TAC.

In the NTN network, due to the large coverage of the cell, one cell may correspond to the area corresponding to one or more TACs.

Herein, an area may also be referred to as a location area or a location area range, and therefore an area corresponding to a TAC may also be referred to as a location area corresponding to a TAC or a location area range corresponding to a TAC.

(4)TAI

TAC and public land mobile network (PLMN) together form a tracking area identity (TAI), that is, TAI=PLMN+TAC. Multiple TAIs form a TAI list (TAI List) and are assigned to a UE at the same time. When the UE moves in the TAI list, it does not need to perform TA update (TA update, TAU) to reduce frequent interaction with the network; when the UE enters the absence When the area in the registered TAI list needs to execute TAU, the core network re-allocates a set of TAIs to the UE, and the newly allocated TAIs can also include some TAIs in the original TAI list

Both TAC and TAI correspond to the same region. After the UE determines the TAC corresponding to its own location, the corresponding TAI can be determined by adding the PLMN.

(5) Cell global identifier (CGI)

CGI is used to identify the area covered by a cell. In the TN network, since the cell range covered by the gNB is small and the CGI range is small, one TAC often includes multiple CGIs. In NTN, gNB covers a large range of cells (at this time, one CGI may correspond to one or more TACs), in order to maintain the CGI operation mechanism in TN network, when gNB sends CGI to AMF, it will do a mapping. A CGI with a larger range (called UU port CGI) is mapped to a CGI with a smaller range (called NG interface CGI) (at this time, a TAC may correspond to one or more CGIs), and this smaller NG interface CGI sent to AMF.

The CGI mentioned below, unless otherwise specified, generally refers to the NG interface CGI.

The NG interface refers to the interface between the 5G base station and the 5G core network.

The UE can determine its own precise geographic location, and determine the corresponding rough location based on the precise location. Before security activation, the UE reports the rough location to the gNB, and the gNB determines the CGI and TAC of the NG interface based on this, and sends the CGI and/or TAC of the NG interface Escalate to AMF.

In this process, the coarse location of the UE may cross the areas corresponding to multiple TACs. After the gNB obtains the coarse location sent by the UE, it cannot determine the unique TAC and/or unique CGI corresponding to the UE. Then the AMF receives the CGI sent by the gNB and/or after the TAC, UE access management cannot be performed based on the unique TAC or CGI.

Based on this, please refer to FIG. 2A, which is a flow chart of a location information processing method provided in the embodiment of the present application. As shown in FIG. 2A, the method includes the following steps:

201. The terminal device acquires location information of the terminal device.

The terminal device (hereinafter referred to as UE) obtains the location information of the terminal device, that is, the UE obtains its current precise location information. For example, it can be obtained through global navigation satellite system (global navigation satellite system, GNSS), global positioning system (global positioning system, GPS), Beidou positioning and other means. The location information may include explicit geographic coordinates, such as latitude and longitude information of the location, or coordinate information of the national grid coordinate system corresponding to the location, and these explicit geographic coordinates can be directly used as the precise location of the UE. Or location information can also include implicit geographic coordinates, such as the location of the province, city, street, zip code, etc. These implicit geographic coordinates can be used to deduce explicit geographic coordinates, and then determine the precise location of the UE .

202. The terminal device determines rough location information of the terminal device according to the location information of the terminal device.

The precise location of the UE loses certain accuracy to obtain the rough location of the UE, that is, the rough location is a location range compared to the precise location. For example, the precise position of the UE is (116.397, 39.916), which means 116.397 degrees east longitude and 39.916 north latitude. The rough location information obtained according to the precise location information may be, for example, (116, 39), indicating that the rough location is a location range consisting of longitude 116.000-116.999 and latitude 39.000-39.999. For another example, the precise location is a precise address: house number 01, ss street, mm district, yy city, xx country, and the rough location can be mm district, yy city, xx country, and so on.

203. The terminal device sends first information, where the first information includes rough location information of the terminal device and first indication information, where the first indication information is used to indicate a unique TAC corresponding to a location indicated by the location information of the terminal device.

In the NTN network, due to the large coverage of the cell, one or more areas corresponding to TACs may appear in one cell. Then after the gNB receives the rough location of the UE, even in the case of determining the cell that the UE accesses, since the rough location of the UE is obtained based on the precise location of the UE, it is assumed that the rough location of the UE corresponds to multiple TACs If the areas overlap, the gNB may not be able to determine the unique TAC corresponding to the current precise location of the UE according to the rough location of the UE.

In this case, the UE can first determine the unique TAC corresponding to the precise location of the UE according to the precise location information of the UE, and then send the first indication information when sending the rough location to the gNB, which is used to indicate the TAC corresponding to the precise location of the UE. Unique TAC, so that the gNB can determine the unique TAC corresponding to the UE. The first indication information may be, for example, an index value of the TAC, or may directly be a specific TAC.

Before the UE obtains the unique TAC corresponding to the precise location of the UE, it needs to first obtain the division of the location area range and the TAC corresponding to these location area ranges (that is, the correspondence between the location area range and the TAC), and then according to the location of the UE's precise location The location area range determines the TAC corresponding to the precise location of the UE. The manner of obtaining the corresponding relationship between the location area range and the TAC may include but not limited to one or more of the following:

1. Acquired according to the broadcast message sent by the access network device. The gNB may send a broadcast message to multiple UEs, and the broadcast message may include relevant information such as a correspondence between location area ranges and TACs.

2. Obtain according to the message delivered by the non-access stratum (NAS). The core network may send a NAS message to the UE, and the message may include relevant information such as a correspondence between a location area range and a TAC.

3. Obtain according to the predefined information in the terminal device. The relevant information of the corresponding relationship between the location area range and the TAC may be pre-stored in the UE, and may be directly read from the memory when acquiring.

In this embodiment, an area may also be called a location area or a location area range. Therefore, an area corresponding to a TAC may also be called a location area corresponding to a TAC or a location area range corresponding to a TAC.

The range of the location area can be represented by latitude and longitude, and can also be represented by a country or region. The corresponding relationship between the range of the location area and the TAC may be represented by a table, or may be represented by a function, an algorithm, or a neural network model. In the embodiment of the present application, the range of the location area is represented by latitude and longitude, and the corresponding relationship between the range of the location area and TAC is represented by a table as an example for illustration. For details, please refer to Table 1, which is a table of the corresponding relationship between the range of the location area and TAC:

Table 1

the	TAC	location area range
0	TAC1	(L 11 ,L 12 )
1	TAC2	(L 21 ,L 22 )
2	TAC3	(L 31 ,L 32 )

As shown in Table 1, each location area range is coded by one TAC. Wherein, the location area range is (L ₁₁ , L ₁₂ ), which means that the area range is from L ₁₁ to L ₁₂ . For example, assuming that L ₁₁ is (110, 30), and L ₂₁ is (120, 40), it means that the location area ranges from 110 degrees east longitude to 120 degrees east longitude, and from 30 degrees north latitude to 40 degrees north latitude. The code corresponding to the range of the location area is TAC1.

Then, determining the TAC corresponding to the precise location of the UE is determining the range of the location area where the precise location of the UE is located. Assuming that the precise location of the UE is (116.397, 39.916), it can be determined that the TAC corresponding to the precise location of the UE is TAC1. When sending the coarse location to the gNB, the UE sends the first indication information to indicate the TAC1, including sending the TAC1 directly, or sending the index value "0" corresponding to the TAC1, and the like.

Optionally, before sending the first location information, the method further includes: determining that the tracking area code TAC corresponding to the location indicated by the rough location information of the terminal device is greater than one.

Assuming that there is one TAC corresponding to the coarse location of the UE, after the UE sends the coarse location information of the UE to the gNB, the gNB can determine the unique TAC corresponding to the UE. In this case, the UE can omit determining the TAC corresponding to its precise location, and send the The process in which the gNB sends the first indication information reduces resource overhead. Therefore, before performing step 203, the UE may first determine that the TAC corresponding to its own coarse location is greater than one.

In an optional example, determining that the location indicated by the rough location information of the terminal device corresponds to more than one tracking area code TAC includes: determining the area corresponding to the target TAC to which the location indicated by the location information of the terminal device belongs; Whether the location indicated by the coarse location information exceeds the range of the area corresponding to the target TAC; if the location indicated by the coarse location information of the terminal device exceeds the range of the area corresponding to the target TAC, determine that the TAC corresponding to the location indicated by the coarse location information of the terminal device is greater than one.

Specifically, according to the foregoing description, it can be known that the range of the location area may have a one-to-one correspondence with the TAC. If the current precise location of the terminal device is within the area corresponding to a TAC, it can be determined that this area is the area corresponding to the target TAC, and then determine the TAC corresponding to the coarse location of the UE by determining whether the coarse location of the UE exceeds the range of the area corresponding to the target TAC Is it greater than one. Please refer to FIG. 2B. FIG. 2B is a schematic diagram of the relationship between the rough location of the UE and the area corresponding to the target TAC provided by the embodiment of the present application. As shown in FIG. 2B, assuming that the current precise location of the terminal device is (116.397, 39.916), It is within the range of the area corresponding to the target TAC (the area corresponding to the target TAC is (110.50, 38.50) to (116.50, 40.50)), corresponding to TAC1. The position indicated by the rough position of the terminal device, that is, the rough position of the terminal device, is a position range after the loss of precision of the precise position, assuming (116, 39), which represents the longitude range corresponding to the coarse position is 116.00~116.99, and the latitude range is 39.00 to 39.99, and the longitude range of the area corresponding to the target TAC is 110.50 to 116.50, which can only partially cover the longitude range corresponding to the coarse position, that is, the coarse position exceeds the range of the area corresponding to the target TAC, then the coarse The position corresponds to a TAC greater than one.

In an optional example, determining that the location indicated by the rough location information of the terminal device corresponds to more than one tracking area code TAC includes: comparing the location indicated by the rough location information of the terminal device with the areas corresponding to multiple TACs, and determining Whether the location indicated by the rough location information of the terminal device intersects with the area corresponding to more than one TAC in the area corresponding to multiple TACs; If the areas overlap, it is determined that the TAC corresponding to the location indicated by the rough location information of the terminal device is more than one.

Specifically, the rough location of the terminal device may also be directly compared with areas corresponding to multiple TACs to determine the intersection of the rough location and the location range areas corresponding to the TACs. Refer to FIG. 2C. FIG. 2C is a schematic diagram of the relationship between a rough location of a UE and areas corresponding to multiple TACs provided in an embodiment of the present application. As shown in FIG. 2C, assuming that the rough location of the UE is (116, 39), the obtained Among the areas corresponding to multiple TACs, the area corresponding to the TAC whose two values are close to each other. Assuming that among the areas corresponding to multiple TACs, the area corresponding to TAC1 is (110.50, 38.50) to (116.59, 40.50), and the area corresponding to TAC2 is (116.60, 38.50) to (120.50, 40.50), then the rough location of the UE can be obtained If the areas corresponding to the two TACs have an intersection, it is determined that the TAC corresponding to the coarse location of the UE is more than one.

According to the above method, the UE can obtain its rough location and the TAC corresponding to its precise location, and then determine the content of the first information, and then send the first information to the access network device. Specifically, the first information may be sent through a first message; the first message may be one or more of the following: RCR recovery complete (RRCResumeComplete) message, RRC setup complete (RRCSetupComplete) message, or RRC reconfiguration complete (RRCReconfigurationComplete) message , or an uplink information transfer (ULInformationTransfer) message.

204. The access network device receives the first information, and determines second information according to the first information, where the second information includes the TAC corresponding to the terminal device and/or the NG interface global cell identity CGI corresponding to the terminal device.

205. The access network device sends the second information to the access and mobility management function AMF.

Specifically, assuming that the second information includes the TAC corresponding to the UE, since the first information includes the TAC corresponding to the precise location of the UE, the gNB can directly transparently transmit the TAC received from the UE as the TAC corresponding to the UE to the AMF, so that the AMF Access management of the UE is performed according to the TAC.

Or, after receiving the rough location information of the UE, the gNB determines the TAC corresponding to the location indicated by the rough location information of the UE (that is, the rough location of the UE), and then compares the TAC corresponding to the precise location of the UE with the TAC corresponding to the rough location of the UE Both are sent to AMF. Specifically, the TAC corresponding to the coarse position may be determined according to the TAC corresponding to the area that intersects with the coarse position. For example, the coarse location overlaps with the area corresponding to TAC1 and the area corresponding to TAC2 at the same time, then the TAC corresponding to the coarse location includes TAC1 and TAC2, and then TAC1, TAC2 and the TAC indicated by the first indication information are all sent to the AMF as the TAC corresponding to the UE .

Or, assuming that the gNB determines that the number of TACs corresponding to the coarse location is greater than one, then compare and verify the multiple TACs corresponding to the coarse location with the unique TAC corresponding to the precise location of the UE determined according to the above process, assuming that the unique TAC corresponding to the precise location of the UE The TAC is included in multiple TACs corresponding to the coarse location, and the unique TAC corresponding to the precise location is sent to the AMF as the TAC corresponding to the UE. Assuming that the unique TAC corresponding to the precise location of the UE is not included in the TAC corresponding to the coarse location, the unique TAC corresponding to the precise location of the UE can be sent to the AMF, or multiple TACs corresponding to the coarse location of the UE can be sent to the AMF, It is also possible to send both the unique TAC corresponding to the precise location of the UE and the multiple TACs corresponding to the coarse location of the UE to the AMF. Alternatively, it may be judged that there is an error in the process of sending the first information from the UE to the gNB, and the gNB may reacquire the first information until the correct TAC is determined and sent to the AMF. The gNB can also directly select a TAC according to its own algorithm and send it to the AMF. Which TAC to send is determined by the gNB algorithm, which is not limited here.

In some cases, the second information includes the NG interface CGI corresponding to the UE. According to the foregoing description, one TAC may correspond to multiple NG interfaces CGI, then after the gNB obtains the unique TAC corresponding to the precise location of the UE, it can determine the unique NG interface according to the rough location of the UE and the unique TAC corresponding to the precise location of the UE CGI, and then send the NG interface CGI to AMF.

The gNB can send the TAC corresponding to the UE to the AMF, or send the NG interface CGI corresponding to the UE to the AMF, or send the TAC and the NG interface CGI corresponding to the UE to the AMF, which can be used by the AMF for UE access management.

It can be seen that in the embodiment of the present application, the terminal device acquires multiple location area ranges and the tracking area codes TACs corresponding to the multiple location area ranges, and then determines the unique TAC corresponding to the precise location of the terminal device, and the corresponding TAC of the precise location of the terminal device. coarse location information, and send the first indication information and coarse location information of the unique TAC to the access network device, so that the access network device determines the unique TAC or the unique NG interface CGI corresponding to the terminal device, and then sends the unique TAC to the AMF TAC and/or according to the unique NG interface CGI, ensure that the access management process of the AMF to the terminal equipment is executed smoothly.

Please refer to FIG. 3A, which is a flowchart of another location information processing method provided in the embodiment of the present application. As shown in FIG. 3A, the method includes the following steps:

301. The terminal device acquires location information of the terminal device.

302. The terminal device determines rough location information of the terminal device according to the location information of the terminal device.

In step 301 and step 302, the terminal device acquires its own current precise location information, and determines rough location information according to the precise location information. The specific process is as described in the aforementioned steps 201 and 202, and will not be repeated here.

303. The terminal device sends the adjusted coarse location information, and the location indicated by the adjusted coarse location information corresponds to the unique TAC.

In this embodiment of the application, the UE can acquire the adjusted coarse location information, so that the location indicated by the adjusted coarse location information corresponds to a unique TAC, then the UE reports the adjusted coarse location information to the gNB, so that the gNB can The coarse location information determines the unique TAC, or determines the unique CGI, and then reports the TAC and/or CGI to the AMF, so that the AMF can perform UE access management according to the unique TAC and/or CGI.

Optionally, the method further includes: determining that the location indicated by the location information of the terminal device is within the first area; adjusting the location indicated by the location information of the terminal device, obtaining adjusted location information, and determining the adjusted location information according to the adjusted location information the adjusted coarse location information; or adjust the location indicated by the rough location information of the terminal device to obtain the adjusted coarse location information.

Optionally, the method further includes: determining that the position indicated by the rough information of the terminal device intersects with multiple first areas; adjusting the position indicated by the position information of the terminal device to obtain adjusted position information, and according to the adjusted position The information determines the adjusted rough location information; or adjusts the location indicated by the rough location information of the terminal device to obtain the adjusted rough location information.

The UE determines that the location indicated by the location information of the UE is in the first area, that is, the UE determines that its precise location is in the first area, and the first area may be the location indicated by the access network device (this indication may be sent by the second message, The second message may be a SIB1 message), or may be a location indicated by a NAS message issued by the core network, or may be a preset location in the UE. For example, gNB can send indication information to UE, indicating that the first area A1=(116.00, 38.50)~(116.59, 40.50), the first area A2=(116.60, 38.50)~(117.00, 40.50), please refer to Figure 3B, for A schematic diagram of a first area provided by the embodiment of the present application, as shown in FIG. 3B , A1 and A2 are adjacent, and A1+A2 is an area composed of longitude 116.00-117.00 and latitude 38.50-40.50. The precise location of the UE is (116.39, 39.91), that is, within the range of A1.

Determine the location indicated by the coarse location information of the UE, that is, the coarse location has an intersection with multiple first areas, and first determine a first area A1 that intersects with the coarse location of the UE, and find that the coarse location of the UE does not completely belong to A1, then Comparing the rough location of the UE with the first area A2 adjacent to A1, it is found that the rough location of the UE also intersects with A2, so it can be determined that the rough location of the UE intersects with multiple first areas. Please refer to FIG. 3B for details.

When the UE determines that its own precise location is in the first area, or its own rough location intersects with multiple first areas, the UE may adjust its own precise location, and then obtain an adjusted rough location based on the adjusted precise location information. Similarly, the UE adjusts its own precise position related data (including adjusting distance, adjusting direction, etc.) to correspond to the first area to which it belongs (different first areas have different adjustment related data), which can be indicated by the access network device, or It may be indicated by a NAS message issued by the core network, or may be preset in the UE. For example, the access network device sends indication information to the UE, which is used to indicate that when the precise position of the UE is in the first area A1, the precise position of the UE moves westward by 4 kilometers.

It can be known that, the foregoing adjustment for the precise location of the UE may make the adjusted precise location of the UE not within the first area.

Or, when the UE determines that its own precise location is in the first area, or its own rough location overlaps with multiple first areas, the UE may adjust its own rough location, and then obtain the adjusted rough location information. Similarly, the data or method for UE to adjust the coarse location corresponds to the first area to which it belongs (different first areas have different adjustment data or methods), which can be indicated by the access network device, or by the NAS issued by the core network The message indication can also be preset in the UE. Adjusting the data of the coarse position may include adjusting the direction or adjusting the distance, etc., and the adjustment method may be, for example, moving, folding in half, or cutting. For example, it is preset in the UE that when the precise location of the UE is in the first area A1, the rough location of the UE is folded in half in the longitude direction with the longitude boundary line of A1 and A2 as the axis. Specifically, as shown in Figure 3C, Figure 3C is a schematic diagram of adjusting the coarse position of the terminal device provided by the embodiment of the present application, assuming that the coarse position of the UE is C1=(116, 39), which is 116.00-116.99 in the longitude direction, across the A1 and A2 can be folded in half with the longitude boundary line 116.59 (or 116.60) of A1 and A2 as the axis, and C1'=(116.60,39)~(116.99,39) and C1"=(116.00,39)~( 116.59, 39), since the precise location of the UE is within the range of A1, C1" within the range of A1 can be reserved as the adjusted coarse location of the UE, and then the adjusted coarse location information can be determined according to the adjusted coarse location.

Alternatively, the rough position of the UE is intersected with A1 (that is, the first area where the precise position of the UE is located), and then the rough position of the non-intersecting part is cut off, and the intersection is reserved as the adjusted rough position, and the adjusted coarse position indication information is used for Indicates the adjusted coarse position.

Or, move the coarse location of the UE. The original coarse location of the UE is the location area corresponding to (116, 39). After moving the coarse location westward (towards the direction away from A2), the new coarse location of the UE is corresponding to (115, 39). location area.

It can be known that, the above-mentioned adjustment for the coarse location of the UE can make the adjusted coarse location of the UE not intersect with multiple first areas (only intersect with one first area, or do not intersect with any first area) ).

Usually, the first area divided by the access network device is the edge or junction of the area corresponding to the TAC. The access network device instructs the terminal device to change its precise or rough The coarse location of the UE indicated by the adjusted coarse location information obtained from the location or coarse location can be used by the access network device to determine the unique TAC corresponding to the coarse location of the UE, and the adjusted coarse location of the UE does not overlap with multiple first areas , then it must be in the area corresponding to a certain TAC, which can ensure that the coarse location of the UE indicated by the adjusted coarse location information corresponds to a unique TAC. In addition, in this case, the access network device only needs to instruct the UE to change its precise location or rough location related data, and the UE may not know the correspondence between the location area range and the TAC.

In the embodiment of the present application, the first area is directly determined, and the relationship between the precise position or rough position of the terminal device and the first area is used as the judgment condition for whether to adjust the precise position or rough position, so that the judgment process is clear and fast, and the Improve the efficiency of obtaining the adjusted coarse position information.

Or, in some cases, as described in the corresponding embodiments of FIG. 2A to FIG. 2C , the UE can know the correspondence between the location area range and the TAC, then the indication information sent by the gNB can be used to indicate that the first area is in the area corresponding to the TAC distribution in . For example, the first area may be an edge position in the area corresponding to each TAC, and specifically may be a position 1 km to 2 km away from the edge. Or the first area can be the position at the junction of the area corresponding to other TACs in the area corresponding to each TAC, then assuming that the area corresponding to each TAC borders the area corresponding to other multiple TACs, then the first area can be A collection of the area corresponding to the TAC and multiple junction locations. In this case, the multiple first areas in the areas corresponding to the multiple TACs can be completely indicated through simple indication information, without specific boundary or range indication for each first area. For details, please refer to FIG. 3D. FIG. 3D is a schematic diagram of the distribution of a first region in the region corresponding to TAC provided by the embodiment of the present application. As shown in FIG. 3D, the regions corresponding to TAC1, TAC2, TAC3 and TAC4 border each other, and S1, S2, S3, and S4 at the junction are respectively the first area among the areas corresponding to TAC1, TAC2, TAC3, and TAC4.

Similarly, when the UE determines that its precise location is in the first area, or its rough location intersects with multiple first areas, the UE can adjust its own precise location, and then obtain the adjusted location based on the adjusted precise location. coarse location information. Consistent with the above description, the data related to the UE's adjustment of its precise location (including adjustment distance, adjustment direction, etc.) can be indicated by the access network device, or indicated by the NAS message issued by the core network, or preset in the UE. . The difference is that when the UE knows the area division corresponding to the TAC, the obtained relevant data for adjusting its precise location can be based on the area corresponding to the TAC, not just based on the network's instructions, so as to save the overhead of network transmission information. For details, please refer to FIG. 3E. FIG. 3E is a schematic diagram of adjusting the precise location of the terminal device provided by the embodiment of the present application. As shown in FIG. 3E, for example, when the access network device indicates that the UE is in the first area, Move your exact position 10km away from the edge of the area corresponding to the TAC. Assuming that the area corresponding to TAC1 is (110.50, 38.50) to (116.50, 40.50), and S1 in the area corresponding to the TAC = (116.30, 38.50) ~ (116.50, 40.50), the precise location L1 of the UE is (116.39, 39.91 ), which is within S1 and at the eastern edge of the area corresponding to TAC. Then move 10km away from the edge of the corresponding area of TAC1, that is, move westward, longitude -0.1, and the precise position L1' after the move is (116.29, 39.91), which is not in S1.

When it is determined that the UE determines that its own precise location is in the first area, or that its own rough location intersects with multiple first areas, the UE may adjust its own rough location, and then obtain the adjusted rough location according to the adjusted rough location. location information. Consistent with the above description, the data or method for the UE to adjust the coarse location may be indicated by the access network device, may also be indicated by a NAS message issued by the core network, or may be preset in the UE. The data for adjusting the coarse position may include an adjustment method or an adjustment distance, and the adjustment method may be, for example, moving, folding in half, or cutting. The difference is that when the UE knows the area division corresponding to the TAC, the indication information sent by the gNB can instruct the UE to perform position or coarse position adjustment based on the area corresponding to the TAC to obtain the adjusted coarse position information, which reduces the specific adjustment data sent by the gNB For example, the gNB may indicate that when the rough location of the UE intersects with multiple first areas, it may cut off part of the rough location that does not intersect with the TAC area corresponding to the UE's precise location, and keep the rough location The coarse position in the area corresponding to the TAC at the precise position of the UE is used as the adjusted coarse position.

In the embodiment of the present application, when the corresponding relationship between the location area range and the TAC is known, that is, the area corresponding to the TAC is known, the first area is determined according to the relationship between the area corresponding to the TAC and the first area, and the first area is used as whether The judgment condition for adjusting the precise location or coarse location, so that when the access network device indicates the first area to the terminal device, or indicates to the terminal device the degree or method of adjusting the precise location or coarse location of the terminal device, signaling transmission can be reduced content to improve communication efficiency between terminal equipment and access network equipment.

In an optional example, when the UE does not know the first area, it can also complete the adjustment of its precise location or coarse location only through the binding relationship between the location area range and the TAC. The first area and related indication information of the adjustment data further save the overhead of network transmission information.

Specifically, assuming that the UE knows its own precise location as L1, and the coarse location corresponding to the precise location is C1, the UE can determine the TAC corresponding to C1 according to the correspondence between the location area range and the TAC, assuming that the number of TACs corresponding to C1 is greater than one , then the UE adjusts its precise location or coarse location to obtain the adjusted coarse location, and the adjusted coarse location corresponds to a unique TAC, then sends the adjusted coarse location information to the gNB according to the adjusted coarse location information obtained from the adjusted coarse location The adjusted coarse location information can ensure that the gNB obtains the unique TAC corresponding to the adjusted coarse location. This process does not require any instruction issued by the access network device.

304. The access network device receives the adjusted coarse location information, and determines second information according to the adjusted coarse location information, where the second information includes the TAC corresponding to the terminal device and/or the NG interface global cell identity CGI corresponding to the terminal device.

305. The access network device sends the second information to the access and mobility management function AMF.

The access network device receives the adjusted coarse location information. Since the location indicated by the adjusted coarse location information corresponds to a unique TAC, after determining the coarse location of the UE according to the adjusted coarse location information, the corresponding TAC of the coarse location of the UE can be determined. Unique TAC. The gNB can send the unique TAC to the AMF, or further, determine the unique CGI corresponding to the UE according to the rough location of the UE, and then send the CGI to the AMF. Alternatively, both the unique TAC and the unique CGI may be sent to the AMF, so that the AMF performs access management on the UE.

It can be seen that in the embodiment of the present application, when the terminal device determines that its own precise position is within the first area, or its own rough position intersects with multiple first areas, it can adjust its own precise position, and then according to the adjusted precise The location obtains the adjusted coarse location information, and can also adjust its own coarse location to obtain the adjusted coarse location information. The terminal device sends the adjusted coarse location information to the access network device, which ensures that the access network device can determine the unique TAC and/or unique CGI according to the adjusted coarse location information, thereby ensuring that the AMF can access the terminal device. into management.

In the embodiment of this application, multiple TACs and PLMNs can determine multiple TAIs, and multiple TAIs can form a TAI list (TAI list) and be assigned to a UE at the same time. When the UE moves in the TAI list, it does not need to perform TA update ( TA update, TAU), to reduce frequent interaction with the network; when the UE enters an area not in its registered TAI list, TAU needs to be executed, and the core network reassigns a set of TAIs to the UE, and the newly assigned TAI can also include Some TAIs in the original TAI list; in addition to this situation, the UE will periodically perform TAU to let the core network know the location of the UE.

As described above, in NTN, a cell may contain areas corresponding to one or more TACs. In the case of areas corresponding to multiple TACs, the access stratum (non-access stratum, AS) of the terminal device does not Knowing the area corresponding to which TAC you are in, the AS layer of the UE reports multiple TACs and/or TAIs to the NAS layer of the UE, so that the NAS layer of the UE cannot determine whether the TAI corresponding to the current location of the UE has been removed from the TAI list. As a result, the UE cannot TAU in time, which affects the normal user experience of the UE.

Based on this, please refer to FIG. 4, which is a flow chart of a location information processing method provided in the embodiment of the present application. As shown in FIG. 4, the method includes the following steps:

401. The access layer AS of the terminal device determines location-related information of the terminal device.

In the embodiment of the present application, the location-related information of the UE may be the current precise location of the UE itself, or may be other related information that indirectly reflects the location of the UE. As described above in the embodiments corresponding to FIG. 2A to FIG. 2C , the way for the UE to determine its current precise location includes GNSS, GPS, Beidou positioning, and the like. The acquired location information may be displayed geographic coordinates or implicit geographic coordinates.

Other relevant information that indirectly reflects the location of the UE may be, for example, the beam where the UE is located. Specifically, the beam where the terminal device is located and the corresponding beam number may be obtained through the access layer AS of the terminal device. The acquisition method includes but is not limited to: acquisition according to the synchronization signal and/or broadcast message sent by the access network device; acquisition according to the synchronization signal and/or broadcast message of the current beam sent by the access network device.

402. The access layer AS of the terminal device determines the TAC corresponding to the terminal device according to the location-related information of the terminal device and the correspondence between the location area range and the TAC;

The UE may acquire the correspondence between the location area range and the TAC, and the specific correspondence may be as in the aforementioned Table 1 and corresponding descriptions. The manner of obtaining may include one or more of the following: obtaining according to a broadcast message sent by an access network device; obtaining according to a NAS message delivered by a core network; obtaining according to predefined information in a terminal device. After obtaining the correspondence between the location area range and the TAC, the location area range of the UE may be determined according to the location indicated by the UE's location related information, and then the TAC corresponding to the UE may be determined according to the TAC corresponding to the location area range.

Specifically, assuming that the UE's location-related information is the UE's precise location-related information, the location area to which the precise location belongs can be determined. Since the UE's precise location is a location point and is in a location area, it can be Determine the unique TAC corresponding to the UE.

Assuming that the location-related information of the UE is the beam information of the UE, the location area range of the UE can be determined according to the beam indicated by the beam information of the UE (that is, the beam number of the UE). Since the beam of the UE may be in multiple location area ranges, therefore One or more TACs corresponding to the UE may be determined according to the beam information of the UE.

In another possible implementation, assuming that the UE's location-related information is the UE's beam information, and the UE can directly obtain the correspondence between the UE's beam information and the TAC, then the above step 402 can be replaced by 402': the terminal device The access layer AS of the terminal device determines the TAC corresponding to the terminal device according to the beam information of the terminal device and the corresponding relationship between the beam information and the TAC.

Specifically, after the AS of the UE determines the beam information of the UE, it can obtain the corresponding relationship between the beam information and the TAC. Obtain the broadcast message of the current beam sent by the device. After obtaining the corresponding relationship between the beam and the TAC, the area where the UE is located and one or more corresponding TACs may be determined according to the beam indicated by the beam information of the UE (ie, the beam number of the UE).

403. The access stratum AS of the terminal device sends second indication information to the non-access stratum NAS of the terminal device, where the indication information is used to indicate a TAC corresponding to the terminal device.

After determining the unique TAC corresponding to the area where the UE is located, second indication information may be sent to the NAS of the UE, where the indication information is used to indicate the unique TAC and/or TAI corresponding to the area where the UE is located. Therefore, the indication information may be directly The unique TAC and/or TAI may also be an index number of the unique TAC and/or TAI. The NAS determines the TAI of the area where the UE is located according to the indication information, determines whether the TAI is in the TAI list, if yes, does not perform the TAU, and if not, performs the TAU process.

In another possible implementation, the TAC determined by the UE through the beam may not be unique, but it also reduces the number of TAC and/or TAI reported by the AS to the NAS to a certain extent, which helps to determine the TAI corresponding to the UE's current location Whether it has been removed from the TAI list.

In another possible implementation, the UE's non-access stratum NAS can directly obtain the correspondence between the location area range and TAC according to the NAS message sent by the core network to the UE, or obtain the location area range and whether to perform TAU. relationship, and determine whether to perform TAU according to the relationship and the location of the UE. Wherein, the relationship between the range of the location area and whether to execute the TAU refers to indicating whether to execute the TAU in the range for different ranges of the location area. For example, if the TAI corresponding to the location of the UE (determined according to the TAC corresponding to the location of the UE) belongs to the location area indicated by the TAI List, TAU is not triggered. For another example, if the location of the UE is within the range of the location area where the TAU is not performed, the TAU is not triggered.

It can be seen that in the embodiment of the present application, when the access layer of the terminal device obtains the corresponding relationship between the location area range and the TAC, it determines the area corresponding to the TAC where it is located according to its own precise location, and sends it to the non-access layer The corresponding unique TAC enables the NAS to determine the area corresponding to the TAC where the UE is located according to the unique TAC, and then timely judge and process the TAU of the UE, thereby improving paging efficiency and overall system performance.

As described above, in some cases, for example, when the UE is in the idle state, the NAS layer of the UE may need to trigger a periodic TAU process or may actively initiate mobile communication. Since the NAS of the UE cannot perceive the coverage of the UE (whether the UE is within the coverage of the satellite signal), if the UE has no coverage, if the NAS layer of the UE triggers a periodic TAU process or actively initiates mobile communication, the transmitted signal network If it is not received, the power of the UE and the signaling of the network will be wasted.

Based on this, please refer to FIG. 5, which is a flowchart of an information transmission processing method provided in the embodiment of the present application. As shown in FIG. 5, the method includes the following steps:

501. The access layer AS of the terminal device acquires the coverage status of the terminal device, where the coverage status includes coverage or no coverage.

The coverage of the terminal equipment includes coverage or no coverage, and the specific determination methods may include:

(1) Determine the coverage of the terminal equipment according to the signal quality of the terminal equipment. When the signal quality of the terminal device is greater than the first preset threshold, it is determined that the UE has coverage; otherwise, it is determined that the UE has no coverage. Wherein, the first preset threshold may be a fixed signal value, or may be a signal value that changes according to communication requirements.

(2) Determine the coverage of the terminal device according to the satellite assistance information provided to the terminal device combined with the location information of the terminal device. Satellite auxiliary information includes ephemeris information, satellite coverage information (such as reference point and coverage radius), etc., and satellite coverage can be determined according to these information. Then it is determined whether the location of the terminal device is within the coverage of the satellite, if so, it is determined that there is coverage, otherwise it is determined that there is no coverage.

502. The access stratum AS of the terminal device sends third indication information to the non-access stratum NAS of the terminal device, where the indication information is used to indicate the coverage situation of the terminal device.

The UE's access layer AS sends the third indication information to the UE's NAS. The specific sending method includes but is not limited to: periodic sending, once the UE's AS layer detects a coverage change, the coverage change includes changing from coverage to no coverage , or change from no coverage to coverage.

If the NAS layer of the UE receives no coverage indication, it does not trigger the periodic TAU process or initiates mobile communication actively. If the NAS layer of the UE receives the coverage indication, it will determine whether to trigger the TAU process or initiate mobile communication according to the current and historical conditions.

It can be seen that in the embodiment of the present application, the AS of the terminal device obtains the coverage status of the terminal device, and sends the coverage status to the NAS of the terminal device, so that the NAS of the terminal device adjusts the triggering timing of the periodic TAU according to the coverage status of the terminal device And the timing of actively initiating mobile communication. When there is no coverage, the NAS layer of the UE does not actively trigger periodic TAU or initiate mobile communication, which saves UE power, saves network signaling overhead, and improves overall network performance. When the coverage is restored, the NAS layer of the UE restores the TAU process as much as possible according to the current and historical status or actively initiates mobile communication to ensure user experience to the greatest extent.

FIG. 6 is a communication apparatus 600 provided by an embodiment of the present application, which can be used to implement the methods and specific embodiments performed by the access network devices in FIGS. 2A to 2C and FIGS. 3A to 3E. In a possible implementation manner, as shown in FIG. 6 , the apparatus 600 includes a processing unit 602 and a sending unit 603 .

A processing unit 602, configured to acquire location information of the terminal device, and determine rough location information of the terminal device according to the location information of the terminal device;

The sending unit 603 is configured to send first information, where the first information includes rough location information of the terminal device, and first indication information, where the first indication information is used to indicate a unique TAC corresponding to a location indicated by the location information of the terminal device; or One piece of information includes adjusted coarse location information, and the location indicated by the adjusted coarse location information corresponds to a unique TAC.

Optionally, before sending the first location information, the processing unit 602 is further configured to: determine that the tracking area code TAC corresponding to the location indicated by the rough location information of the terminal device is greater than one.

Optionally, one TAC corresponds to one area.

Optionally, determining that the location indicated by the coarse location information of the terminal device corresponds to more than one tracking area code TAC includes: determining the area corresponding to the target TAC to which the location indicated by the location information of the terminal device belongs; determining the coarse location information indicated by the terminal device Whether the position of the terminal device exceeds the range of the area corresponding to the target TAC; if the position indicated by the rough position information of the terminal device exceeds the range of the area corresponding to the target TAC, it is determined that the TAC corresponding to the position indicated by the coarse position information of the terminal device is greater than one.

Optionally, determining that the location indicated by the coarse location information of the terminal device corresponds to more than one tracking area code TAC includes: comparing the location indicated by the rough location information of the terminal device with the areas corresponding to multiple TACs, and determining the coarse location code of the terminal device. Whether the location indicated by the location information intersects with the area corresponding to more than one TAC in the area corresponding to multiple TACs; if the location indicated by the rough location information of the terminal device overlaps with the area corresponding to more than one TAC in the area corresponding to multiple TACs, Then it is determined that the TAC corresponding to the location indicated by the rough location information of the terminal device is more than one.

Optionally, the processing unit 602 is further configured to: determine that the location indicated by the location information of the terminal device is within the first area; adjust the location indicated by the location information of the terminal device, obtain adjusted location information, and Determine the adjusted coarse location information; or adjust the location indicated by the rough location information of the terminal device to obtain the adjusted coarse location information.

Optionally, the processing unit 602 is further configured to: determine that the position indicated by the rough information of the terminal device intersects with multiple first areas; adjust the position indicated by the position information of the terminal device, obtain adjusted position information, and calculate The location information of the terminal device is used to determine the adjusted coarse location information; or the location indicated by the rough location information of the terminal device is adjusted to obtain the adjusted coarse location information.

Optionally, the foregoing processing unit 602 may be a central processing unit (Central Processing Unit, CPU).

Optionally, the foregoing communication device 600 may further include a receiving unit 601, and the sending unit 603 and the receiving unit 601 may be interface circuits or transceivers. Used to receive or send data or instructions from other electronic devices.

Optionally, the communication device 600 may further include a storage unit (not shown in the figure), which may be used to store data and/or signaling, and the storage unit may be coupled to the receiving unit 601, the sending unit 603, and the processing unit 602 . For example, the processing unit 602 may be configured to read data and/or signaling in the storage unit, so that the channel processing process in the foregoing method embodiments is executed.

FIG. 7 shows a communication device 700 provided by the embodiment of the present application, which can be used to execute the methods and specific embodiments performed by the terminal devices in FIGS. 2A to 2C and FIGS. 3A to 3E . In a possible implementation manner, as shown in FIG. 7 , the apparatus 700 includes a sending unit 701 , a receiving unit 702 and a processing unit 703 .

The receiving unit 702 is configured to receive first information, where the first information includes rough location information of the terminal device, and first indication information, where the first indication information is used to indicate a unique TAC corresponding to a location indicated by the location information of the terminal device;

The processing unit 703 is configured to determine second information according to the first information, where the second information includes the TAC corresponding to the terminal device and/or the NG interface global cell identity CGI corresponding to the terminal device;

The sending unit 701 is configured to send the second information to the access and mobility management function AMF.

Optionally, if the second information includes the TAC corresponding to the terminal device, determining the second location information according to the first information includes: determining the unique TAC corresponding to the location indicated by the location information of the terminal device according to the first indication information, and setting the TAC of the terminal device to The unique TAC corresponding to the location indicated by the location information is used as the TAC corresponding to the terminal device.

Optionally, if the second information includes the NG interface CGI corresponding to the terminal device, determining the second location information according to the first information includes: the location indicated by the rough location information of the terminal device, and the location corresponding to the location indicated by the location information of the terminal device. The only TAC identified is the NG interface CGI.

Optionally, the foregoing processing unit 703 may be a central processing unit (Central Processing Unit, CPU).

Optionally, the foregoing receiving unit 702 and sending unit 701 may be interface circuits or transceivers. Used to receive or send data or signaling from other electronic devices.

Optionally, the communication device 700 may further include a storage unit (not shown in the figure), which may be used to store data and/or signaling, and the storage unit may be coupled to the receiving unit 702, the sending unit 701, and the processing unit 703 .

As shown in FIG. 8 , FIG. 8 shows a schematic structural diagram of an electronic device in an embodiment of the present application. The structures of the communication device 600 and the communication device 700 may refer to the structure shown in FIG. 8 . The electronic device 800 includes: a memory 801 , a processor 802 , a communication interface 803 and a bus 804 . Wherein, the memory 801 , the processor 802 , and the communication interface 803 are connected to each other through a bus 804 .

The memory 801 may be a read-only memory (Read Only Memory, ROM), a static storage device, a dynamic storage device or a random access memory (Random Access Memory, RAM). The memory 801 may store a program. When the program stored in the memory 801 is executed by the processor 802, the processor 802 and the communication interface 803 are used to execute various steps of the distributed rendering method of the embodiment of the present application.

The processor 802 may adopt a general-purpose CPU, a microprocessor, an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a GPU, or one or more integrated circuits for executing related programs, so as to realize the communication device of the embodiment of the present application The receiving unit 601 in 600, the processing unit 602 and the sending unit 603 need to perform the functions, or realize the sending unit 701 in the communication device 700, the receiving unit 702 and the processing unit 703 need to perform the functions, or implement the method of this application Example location information processing method.

The processor 802 may also be an integrated circuit chip with signal processing capabilities. During implementation, each step of the distributed rendering method of the present application may be completed by an integrated logic circuit of hardware in the processor 802 or instructions in the form of software. The above-mentioned processor 802 can also be a general-purpose processor, a digital signal processor (Digital Signal Processing, DSP), an application-specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices , discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory 801, and the processor 802 reads the information in the memory 801, and combines its hardware to complete the functions required by the modules included in the communication device 600 or the communication device 700 of the embodiment of the application, or to implement the method of the application. Example location information processing method.

The communication interface 803 implements communication between the electronic device 800 and other devices or communication networks by using a transceiver device such as but not limited to a transceiver. For example, the determined segmentation target and/or candidate target bounding boxes may be obtained through the communication interface 803 . The bus 804 may include a path for transferring information between various components of the electronic device 800 (eg, memory 801 , processor 802 , communication interface 803 ).

It should be noted that although the electronic device 800 shown in FIG. 8 only shows a memory, a processor, and a communication interface, in the specific implementation process, those skilled in the art should understand that the electronic device 800 also includes necessary other devices. Meanwhile, according to specific needs, those skilled in the art should understand that the electronic device 800 may also include hardware devices for implementing other additional functions. In addition, those skilled in the art should understand that the electronic device 800 may only include components necessary to realize the embodiment of the present application, and does not necessarily include all the components shown in FIG. 8 .

The embodiment of the present application also provides a communication system, the communication system includes a first communication device and a second communication device, and the first communication device can be used to implement the above-mentioned interface in Figure 2A to Figure 2C and Figure 3A to Figure 3E For the method executed by the network access device, the second communication device may be used to execute the method executed by the terminal device in FIGS. 2A to 2C and FIGS. 3A to 3E .

In addition, the present application further provides a computer program, which is used to implement the operations and/or processing performed by the first communication device in the method provided in the present application.

The present application also provides a computer program, which is used to implement the operations and/or processing performed by the second communication device in the method provided in the present application.

The present application also provides a computer-readable storage medium, the computer-readable storage medium stores computer programs or computer-executable instructions, and when the computer programs or computer-executable instructions are run on the computer, the computer executes the Operations and/or processing performed by the first communication device in the method.

The present application also provides a computer-readable storage medium, the computer-readable storage medium stores computer programs or computer-executable instructions, and when the computer programs or computer-executable instructions are run on the computer, the computer executes the Operations and/or processing performed by the second communication device in the method.

The present application also provides a computer program product, which includes computer-executable instructions or computer programs. When the computer-executable instructions or computer programs are run on a computer, the method provided by the present application is executed by the first communication device Performed The operation and/or processing is performed.

The present application also provides a computer program product, which includes computer-executable instructions or computer programs, and when the computer-executable instructions or computer programs are run on a computer, the method provided by the present application is executed by the second communication device Performed The operation and/or processing is performed.

It should be understood that, in various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

Those skilled in the art can appreciate that the modules and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device, and module can refer to the corresponding process in the foregoing method embodiment, and details are not repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components can be combined or integrated. to another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or modules may be in electrical, mechanical or other forms.

A module described as a separate component may or may not be physically separated, and a component shown as a module may or may not be a physical module, that is, it may be located in one place, or may also be distributed to multiple network modules. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional module in each embodiment of the present application may be integrated into one processing module, each module may exist separately physically, or two or more modules may be integrated into one module.

If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods in various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disc, etc., which can store program codes. .

Claims (23)

1. A location information processing method, characterized in that the method comprises:

   Obtain the location information of the terminal device;

   determining rough location information of the terminal device according to the location information of the terminal device;

   Sending first information, where the first information includes rough location information of the terminal device, and first indication information, where the first indication information is used to indicate the unique tracking area corresponding to the location indicated by the location information of the terminal device code TAC; or the first information includes adjusted coarse location information, and the location indicated by the adjusted coarse location information corresponds to a unique TAC.
2. The method according to claim 1, further comprising: before sending the first location information, the method further comprises: determining that the TAC corresponding to the location indicated by the rough location information of the terminal device is more than one.
3. The method according to claim 1 or 2, characterized in that one TAC corresponds to one area.
4. The method according to claim 3, wherein the determining that the tracking area code TAC corresponding to the location indicated by the rough location information of the terminal device is more than one includes:

   determining the area corresponding to the target TAC to which the location indicated by the location information of the terminal device belongs;

   determining whether the location indicated by the rough location information of the terminal device is beyond the scope of the area corresponding to the target TAC;

   If the location indicated by the coarse location information of the terminal device exceeds the scope of the area corresponding to the target TAC, it is determined that the location indicated by the coarse location information of the terminal device corresponds to more than one TAC.
5. The method according to claim 3, wherein the determining that the tracking area code TAC corresponding to the location indicated by the rough location information of the terminal device is more than one includes:

   comparing the location indicated by the rough location information of the terminal device with areas corresponding to multiple TACs, and determining whether the location indicated by the rough location information of the terminal device corresponds to more than one TAC in the area corresponding to the multiple TACs Areas overlap;

   If the location indicated by the coarse location information of the terminal device has an intersection with the area corresponding to more than one TAC among the areas corresponding to the plurality of TACs, determine that the location indicated by the coarse location information of the terminal device corresponds to more than one TAC.
6. The method according to any one of claims 1-5, wherein when the first information includes adjusted coarse location information, the method further comprises:

   determining that the location indicated by the location information of the terminal device is within the first area;

   Adjusting the location indicated by the location information of the terminal device, obtaining adjusted location information, and determining adjusted coarse location information according to the adjusted location information; or

   Adjusting the location indicated by the rough location information of the terminal device to obtain the adjusted rough location information.
7. The method according to any one of claims 1-5, wherein when the first information includes adjusted coarse location information, the method further comprises:

   determining that the position indicated by the rough information of the terminal device intersects with multiple first areas;

   Adjusting the location indicated by the location information of the terminal device, obtaining adjusted location information, and determining adjusted coarse location information according to the adjusted location information; or

   Adjusting the location indicated by the rough location information of the terminal device to obtain the adjusted rough location information.
8. A location information processing method, characterized in that the method comprises:

   receiving first information, where the first information includes rough location information of the terminal device, and first indication information, where the first indication information is used to indicate a unique TAC corresponding to a location indicated by the location information of the terminal device;

   Determine the second information according to the first information, the second information includes the TAC corresponding to the terminal device and/or the NG interface global cell identity CGI corresponding to the terminal device;

   Said second information is sent to an Access and Mobility Management Function AMF.
9. The method according to claim 8, wherein if the second information includes the TAC corresponding to the terminal device, determining the second location information according to the first information includes:

   Determine the unique TAC corresponding to the position indicated by the position information of the terminal device according to the first indication information, and use the unique TAC corresponding to the position indicated by the position information of the terminal device as the TAC corresponding to the terminal device.
10. The method according to claim 8, wherein if the second information includes the NG interface CGI corresponding to the terminal device, determining the second location information according to the first information includes:

    The NG interface CGI is determined according to the location indicated by the rough location information of the terminal device and the unique TAC corresponding to the location indicated by the location information of the terminal device.
11. A communication device, characterized in that the device includes:

    a processing unit, configured to acquire location information of the terminal device, and determine rough location information of the terminal device according to the location information of the terminal device;

    A sending unit, configured to send first information, where the first information includes rough location information of the terminal device, and first indication information, where the first indication information is used to indicate a location indicated by the location information of the terminal device The corresponding unique TAC; or the first information includes adjusted coarse location information, and the location indicated by the adjusted coarse location information corresponds to the unique TAC.
12. The apparatus according to claim 11, wherein before sending the first location information, the processing unit is further configured to: determine that the tracking area code TAC corresponding to the location indicated by the rough location information of the terminal device is more than one.
13. The device according to claim 11 or 12, wherein one TAC corresponds to one area.
14. The device according to claim 13, wherein the determining that the tracking area code TAC corresponding to the location indicated by the rough location information of the terminal device is more than one includes:

    determining the area corresponding to the target TAC to which the location indicated by the location information of the terminal device belongs;

    determining whether the location indicated by the rough location information of the terminal device is beyond the scope of the area corresponding to the target TAC;

    If the location indicated by the coarse location information of the terminal device exceeds the scope of the area corresponding to the target TAC, it is determined that the location indicated by the coarse location information of the terminal device corresponds to more than one TAC.
15. The device according to claim 13, wherein the determining that the tracking area code TAC corresponding to the location indicated by the rough location information of the terminal device is more than one includes:

    comparing the location indicated by the rough location information of the terminal device with areas corresponding to multiple TACs, and determining whether the location indicated by the rough location information of the terminal device corresponds to more than one TAC in the area corresponding to the multiple TACs Areas overlap;

    If the location indicated by the coarse location information of the terminal device has an intersection with the area corresponding to more than one TAC among the areas corresponding to the plurality of TACs, determine that the location indicated by the coarse location information of the terminal device corresponds to more than one TAC.
16. The device according to any one of claims 11-15, wherein the processing unit is further configured to:

    determining that the location indicated by the location information of the terminal device is within the first area;

    Adjusting the location indicated by the location information of the terminal device, obtaining adjusted location information, and determining adjusted coarse location information according to the adjusted location information; or

    Adjusting the location indicated by the rough location information of the terminal device to obtain the adjusted rough location information.
17. The device according to any one of claims 11-15, wherein the processing unit is further configured to:

    determining that the position indicated by the rough information of the terminal device intersects with multiple first areas;

    Adjusting the location indicated by the location information of the terminal device, obtaining adjusted location information, and determining adjusted rough location information according to the adjusted location information; or

    Adjusting the location indicated by the rough location information of the terminal device to obtain the adjusted rough location information.
18. A communication device, characterized in that the device includes:

    A receiving unit, configured to receive first information, where the first information includes rough location information of the terminal device, and first indication information, where the first indication information is used to indicate a location indicated by the location information of the terminal device The corresponding unique TAC;

    A processing unit, configured to determine second information according to the first information, where the second information includes the TAC corresponding to the terminal device and/or the NG interface global cell identity CGI corresponding to the terminal device;

    A sending unit, configured to send the second information to an access and mobility management function AMF.
19. The device according to claim 18, wherein if the second information includes the TAC corresponding to the terminal device, determining the second location information according to the first information includes:

    Determine the unique TAC corresponding to the position indicated by the position information of the terminal device according to the first indication information, and use the unique TAC corresponding to the position indicated by the position information of the terminal device as the TAC corresponding to the terminal device.
20. The device according to claim 18, wherein if the second information includes the NG interface CGI corresponding to the terminal device, determining the second location information according to the first information includes:

    The NG interface CGI is determined according to the location indicated by the rough location information of the terminal device and the unique TAC corresponding to the location indicated by the location information of the terminal device.
21. A computer-readable storage medium, characterized in that instructions are stored thereon, and when the instructions are executed, it is used to implement the method according to any one of claims 1 to 7, or the method according to any one of claims 8 to 7. The method described in any one of 10.
22. A system on a chip, characterized in that it includes: a processor, the processor is used to execute a stored computer program, and the computer program is used to execute the method according to any one of claims 1 to 7, or the The method described in any one of 8 to 10 is required.
23. A computer program product, the computer program product comprising: a computer program, when the computer program is executed, the method according to any one of claims 1 to 7 is executed, or the method according to claim 8 is executed The method described in any one of to 10 is carried out.

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