CN116017294A

CN116017294A - Position information processing method and device

Info

Publication number: CN116017294A
Application number: CN202111228401.9A
Authority: CN
Inventors: 吴小宁; 胡星星; 耿婷婷
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2023-04-25
Also published as: WO2023066071A1

Abstract

The application discloses a position information processing method and device, wherein the method comprises the following steps: acquiring position information of terminal equipment; determining coarse position information of the terminal equipment according to the position information of the terminal equipment; transmitting first information, wherein the first information comprises coarse position information of the terminal equipment and first indication information, and the first indication information is used for indicating a unique TAC corresponding to the position indicated by the position information of the terminal equipment; the access network equipment receives the first information, determines second information according to the first information, wherein the second information comprises TACs corresponding to the terminal equipment and/or NG interface global cell identifiers CGI corresponding to the terminal equipment. According to the embodiment of the invention, the access network equipment can obtain the unique TAC and send the unique TAC and/or the unique NG interface CGI to the AMF, so that the smooth execution of the AMF access management process is ensured.

Description

Position information processing method and device

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for processing location information.

Background

Tracking Area (TA) is a concept set up for location management of a terminal equipment (UE) by a long term evolution (long term evolution, LTE) system or a New Radio (NR) system. Which is defined as a free mobile area where the UE does not need an update service. Within the TA of one UE, one or more tracking area codes (tracking area code, TAC) may be included. In a terrestrial communication network (terrestrial network, TN), TACs are configured at a cell level, a plurality of cells may be configured with the same TAC, and a cell may only belong to an area corresponding to one TAC, and a corresponding TAC may correspond to one or more global cell identities (cell global identifier, CGI). The TAC and the public land mobile network (public land mobile network, PLMN) together form a tracking area identity (tracking area identity, TAI), i.e. tai=plmn+tac. A plurality of TAIs form a TAI List (TA List) and are simultaneously distributed to a UE, and the UE does not need to execute TA update (TAU) when moving in the TAI List so as to reduce frequent interaction with a network; when the UE enters an area not in the TAI list registered by the UE, the TAU needs to be executed, and the core network reallocates a group of TAIs to the UE, where the newly allocated TAIs may also include some TAIs in the original TAI list; in addition to this, the UE may also do TAU periodically, letting the core network know the location of the UE.

In NTN networks, due to the large coverage area of cells, one cell may have one or more areas corresponding to 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 performs a mapping to map a larger CGI (called UU interface CGI) into a smaller CGI (called NG interface CGI), so that a TAC corresponds to one or more NG interface CGIs.

The UE may determine its precise geographic location and a coarse location (coarse location) corresponding to the precise geographic location, where the coarse location is obtained from the loss of precision (e.g., expressed bits, etc.) of the precise geographic location. Before security activation, the UE reports the coarse location to a base station (gNB), the gNB determines the TAC where the UE is located according to the coarse location, or further determines an NG interface CGI corresponding to the UE in the TAC range, and reports the NG interface CGI and/or TAC to an access and mobility management function (access and mobility management function, AMF) so that the AMF performs access management of the UE according to the coarse location.

However, the coarse location reported before the UE is safely activated may span multiple TACs, so that the gNB cannot determine the unique TAC corresponding to the UE and/or the unique NG interface CGI corresponding to the UE according to the coarse location, and thus the AMF cannot perform access management of the UE according to the unique TAC and/or the unique NG interface CGI.

Disclosure of Invention

The embodiment of the application provides a position information processing method and a position information processing device, which enable access network equipment to obtain a unique TAC or a unique NG interface CGI corresponding to terminal equipment and send the unique TAC or the unique NG interface CGI to a core network element, so that the core network element can smoothly execute an access management process of the terminal equipment.

In a first aspect, there is provided a location information processing method, the method including: acquiring position information of terminal equipment; determining coarse position information of the terminal equipment according to the position information of the terminal equipment; transmitting first information, wherein the first information comprises coarse position information of the terminal equipment and first indication information, and the first indication information is used for indicating a unique TAC corresponding to the position indicated by the position information of the terminal equipment; or the first information comprises the adjusted coarse position information, and the position indicated by the adjusted coarse position information corresponds to the unique TAC.

In the embodiment of the application, the unique TAC corresponding to the accurate position of the terminal equipment and the coarse position information corresponding to the accurate position of the terminal equipment are determined, and the first indication information and the coarse position information corresponding to the unique TAC are sent to the access network equipment, so that the access network equipment 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, and the smooth execution of the access management process of the AMF to the terminal equipment is ensured.

In an alternative example, before sending the first location information, the method further comprises: and determining that the tracking area code TAC corresponding to the position indicated by the coarse position information of the terminal equipment is more than one.

In an alternative example, one TAC corresponds to one region.

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

In an alternative example, determining that the tracking area code TAC corresponding to the location indicated by the coarse location information of the terminal device is greater than one includes: comparing the position indicated by the coarse position information of the terminal equipment with the areas corresponding to the TACs, and determining whether the position indicated by the coarse position information of the terminal equipment has intersection with more than one area corresponding to one TAC in the areas corresponding to the TACs; if the position indicated by the coarse position information of the terminal equipment has intersection with more than one area corresponding to one TAC in the areas corresponding to the plurality of TACs, determining that the TAC corresponding to the position indicated by the coarse position information of the terminal equipment is more than one.

In an alternative example, the method further comprises: determining that the position indicated by the position information of the terminal equipment is in a first area; adjusting the position indicated by the position information of the terminal equipment to obtain adjusted position information; determining adjusted coarse position information according to the adjusted position information; or adjusting the position indicated by the coarse position information of the terminal equipment to obtain the adjusted coarse position information.

In an alternative example, the method further comprises: determining that the position indicated by the rough information of the terminal equipment is intersected with a plurality of first areas; adjusting the position indicated by the position information of the terminal equipment, obtaining adjusted position information, and determining adjusted coarse position information according to the adjusted position information; or adjusting the position indicated by the coarse position information of the terminal equipment to obtain the adjusted coarse position information.

In the embodiment of the application, the first area is directly determined, and the relation between the accurate position or the coarse position of the terminal equipment and the first area is used as the judging condition for judging whether to adjust the accurate position or the coarse position, so that the judging process is clear and rapid, and the efficiency of obtaining the adjusted coarse position information is improved.

In a second aspect, there is provided a position information processing method, the method including: receiving first information, wherein the first information comprises coarse position information of the terminal equipment and first indication information, and the first indication information is used for indicating a unique TAC corresponding to the position indicated by the position information of the terminal equipment; determining second information according to the first information, wherein the second information comprises TACs corresponding to the terminal equipment and/or NG interface global cell identifiers CGI corresponding to the terminal equipment; the second information is sent to the access and mobility management function AMF.

In an optional example, if the second information includes TAC corresponding to the terminal device, determining the second location information according to the first information includes: and determining the unique TAC corresponding to the position indicated by the position information of the terminal equipment according to the first indication information, and taking the unique TAC corresponding to the position indicated by the position information of the terminal equipment as the TAC corresponding to the terminal equipment.

In an optional example, if the second information includes an NG interface CGI corresponding to the terminal device, determining the second location information according to the first information includes: and determining the NG interface CGI according to the position indicated by the rough position information of the terminal equipment and the unique TAC corresponding to the position indicated by the position information of the terminal equipment.

In a third aspect, there is provided a communication apparatus comprising: the processing unit is used for acquiring the position information of the terminal equipment and determining the coarse position information of the terminal equipment according to the position information of the terminal equipment; a transmitting unit, configured to transmit first information, where the first information includes coarse 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 the first information comprises the adjusted coarse position information, and the position indicated by the adjusted coarse position information corresponds to the unique TAC.

In an alternative example, the processing unit is further configured to, prior to sending the first location information: and determining that the tracking area code TAC corresponding to the position indicated by the coarse position information of the terminal equipment is more than one.

In an alternative example, one TAC corresponds to one region.

In an alternative example, the processing unit is further configured to: determining that the position indicated by the position information of the terminal equipment is in a first area; adjusting the position indicated by the position information of the terminal equipment to obtain adjusted position information; determining adjusted coarse position information according to the adjusted position information; or adjusting the position indicated by the coarse position information of the terminal equipment to obtain the adjusted coarse position information.

In an alternative example, the processing unit is further configured to: determining that the position indicated by the rough information of the terminal equipment is intersected with a plurality of first areas; adjusting the position indicated by the position information of the terminal equipment, obtaining adjusted position information, and determining adjusted coarse position information according to the adjusted position information; or adjusting the position indicated by the coarse position information of the terminal equipment to obtain the adjusted coarse position information.

In a fourth aspect, there is provided a communication apparatus comprising: a receiving unit, configured to receive first information, where the first information includes coarse 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 is used for determining second information according to the first information, wherein the second information comprises TACs corresponding to the terminal equipment and/or NG interface global cell identifiers CGI corresponding to the terminal equipment; and the sending unit is used for sending the second information to the access and mobility management function AMF.

In a fifth aspect, embodiments of the present application provide a communication apparatus comprising a communication interface for communicating with other devices and at least one processor. By way of example, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface. At least one processor is configured to invoke a set of programs, instructions or data to perform the method described in the first or second aspect above. The apparatus may also include a memory for storing programs, instructions or data called by the processor. The memory is coupled to at least one processor which, when executing instructions or data stored in the memory, can implement the method described in the first or second aspect above.

In a sixth aspect, embodiments of the present application further provide a computer readable storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform a method as in the first aspect or any one of the possible implementations of the first aspect, or cause the computer to perform a method as in the second aspect or any one of the possible implementations of the second aspect.

In a seventh aspect, an embodiment of the present application provides a chip system, where the chip system includes a processor, and may further include a memory, where the method is used to implement the first aspect or any one of the possible implementation manners of the first aspect, or the method is used to implement the second aspect or any one of the possible implementation manners of the second aspect, and the chip system may include a chip, or may include a chip and other discrete devices.

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

In an eighth aspect, embodiments of the present application also provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method as in the first aspect or any one of the possible implementations of the first aspect, or cause the computer to perform the method as in the second aspect or any one of the possible implementations of the second aspect.

In a ninth aspect, in an embodiment of the present application, there is further provided a communication system, which may include the communication apparatus provided in the first aspect and the second aspect.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below.

Fig. 1A is a RAN architecture based on NTN according to an embodiment of the present application;

fig. 1B is another RAN architecture based on NTN provided in an embodiment of the present application;

fig. 1C is another RAN architecture based on NTN provided in an embodiment of the present application;

fig. 1D is another RAN architecture based on NTN provided in an embodiment of the present application;

fig. 1E is a schematic structural diagram of an access network device according to an embodiment of the present application;

fig. 2A is a flowchart of a method for processing location information according to an embodiment of the present application;

fig. 2B is a schematic diagram of a relationship between a coarse position 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 coarse position of a UE and areas corresponding to a plurality of TACs according to an embodiment of the present application;

FIG. 3A is a flowchart of another method for processing location information according to an embodiment of the present disclosure;

FIG. 3B is a schematic view of a first area according to an embodiment of the present disclosure;

Fig. 3C is a schematic diagram of adjusting a coarse position of a terminal device according to an embodiment of the present application;

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

fig. 3E is a schematic diagram of adjusting an accurate position of a terminal device according to 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 flowchart of an information transmission processing method provided in an embodiment of the present application;

fig. 6 is a block diagram of a communication device according to an embodiment of the present application;

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

fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The terms "first," "second," "third," and "fourth" and the like in the description and in the claims of this application and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or modules is not limited to only those steps or modules but may include other steps or modules not expressly listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases 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. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

"plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

First, an application scenario of the embodiment of the present application will be described.

The embodiments of the present application may be applied to fourth generation mobile information (the 4th generation mobile communication technology,4G) systems, fifth generation mobile communication (5th generation mobile communication technology,5G) systems, non-terrestrial communication networks (non-terrestrial network, NTN) and future network systems.

The NTN-based RAN architecture may include 5 kinds as follows:

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

As shown in fig. 1A, in an NTN-based RAN architecture provided in the embodiments of the present application, in a transparent transmission scenario, there are independent base stations. The satellites form a remote radio unit, which is mainly used as a physical layer relay between terminal equipment and access network equipment, regenerates physical layer signals, and is invisible to higher layers. In particular, satellites may be used in the uplink and downlink directions: radio frequency filtering, frequency conversion and amplification. There is also an NTN gateway between the satellite and the access network device. The satellite replicates the signals of the NR-Uu interface from the service link (between the satellite and the UE) to the feeder link (between the NTN gateway and the satellite) and vice versa. Wherein the satellite radio interface on the feeder link carries the NR-Uu port information, in other words, the satellite does not terminate or change the NR-Uu port information, but merely copies and forwards the information. The NTN gateway supports all necessary functions for forwarding the 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 regenerated satellites without inter-satellite links (ISLs)

As shown in fig. 1B, another RAN architecture based on NTN provided in an embodiment of the present application, in which there is no ISL, and the satellite is used as a payload processed by the base station. Wherein signals of the NR-Uu radio interface are transmitted in a service link between the UE and the satellite. Between the satellite and the 5G core network, there are devices such as NTN gateway, etc. the NG interface is responsible for information interaction, especially, between the satellite and NTN gateway, the NG interface is carried on the satellite wireless interface SRI, and is responsible for higher layer information transmission. The NTN gateway is a transport network layer node and supports all necessary transport protocols.

(3) RAN architecture with regenerated satellites with ISL

As shown in fig. 1C, another NTN-based RAN architecture is provided in an embodiment of the present application, in which the same satellites are used as payloads for base station processing. The difference from (2) is that there is an ISL, and multiple satellites can be connected through an Xn interface. Wherein the Xn interface is carried over the inter-satellite link ISL. UEs served by one 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 regenerated satellites as gNB-DUs

As shown in fig. 1D, another RAN architecture based on NTN provided in an embodiment of the present application, in which a satellite is used as a Distributed Unit (DU) in a base station, and performs a base station function together with other Central Units (CUs). Between the distribution units on the satellite and the concentration units on the ground, there is an NTN gateway. The NTN gateway is a transport network layer node supporting all necessary transport protocols. The F1 interface protocol signals are transmitted in the satellite radio interface SRI of the feeder link between the satellite and the gateway. The NR-Uu interface protocol signals are transmitted over a service link between the UE and the satellite.

(5) RAN architecture with satellite as access backhaul integration (integrated access and backhaul, IAB)

In this scenario, the satellite is handling the payload as an IAB base station. The specific architecture is to be further investigated.

The communication system in the embodiment of the application mainly relates to the network elements: terminal equipment, core network, access network equipment. Specifically:

1) A terminal device, also called User Equipment (UE), mobile Station (MS), mobile Terminal (MT), etc., is a device that provides voice and/or data connectivity to a user. Such as a handheld device, an in-vehicle device, etc., having a wireless connection function. Currently, some examples of terminals are: a mobile phone, a tablet, a notebook, a palm, a mobile internet device (mobile internet device, MID), a wearable device, a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (self driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like.

2) An access network device refers to a radio access network (radio access network, RAN) node (or device), also referred to as a base station, that accesses a terminal to a wireless network. Currently, some examples of RAN nodes are: a further evolved Node B (gNB), a transmission and reception point (transmission reception point, TRP), an evolved Node B (eNB), a radio network controller (radio network controller, RNC), a Node B (Node B, NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (e.g., home evolved NodeB, or home Node B, HNB), a baseband unit (BBU), or a wireless fidelity (wireless fidelity, wifi) Access Point (AP), etc. In addition, in one network structure, the access network device may include a Centralized Unit (CU) node, or a Distributed Unit (DU) node, or a RAN device including a CU node and a DU node. The RAN equipment comprising CU nodes and DU nodes splits the protocol layers of gnb in the NR system, the functions of part of the protocol layers are controlled in the CU in a centralized way, and the functions of the rest part or all of the protocol layers are distributed in DUs, so that the CU controls the DUs in a centralized way. As an implementation manner, referring to fig. 1E, fig. 1E is a schematic structural diagram of an access network device provided in an embodiment of the present application, as shown in fig. 1E, a CU is deployed with a radio resource control (radio Resource Control, RRC) layer, a packet data convergence protocol (packet data convergence protocol, PDCP) layer, and a service data adaptation protocol (service data adaptation protocol, SDAP) layer in a protocol stack; the DU is deployed with a radio link control (radio link control, RLC) layer, a media intervening control (media access control, MAC) layer, and a physical layer (PHY) in the protocol stack. Thus, the CU has the processing capabilities of RRC, PDCP and SDAP. The DU has the processing power of RLC, MAC and PHY. It is to be understood that the above-described segmentation of functions is only one example and does not constitute a limitation on CUs and DUs. That is, there may be other manners of function segmentation between the CU and the DU, which is not described herein in detail in this embodiment. The functionality of a CU may be implemented by one entity or by a different entity. For example, the functionality of the CU may be further split, e.g. the Control Plane (CP) and the User Plane (UP) are separated, i.e. the control plane (CU-CP) and the CU user plane (CU-UP) of the CU. For example, CU-CP and CU-UP may be implemented by different functional entities, which may be coupled to DUs, together performing the functions of the base station.

3) The core network device refers to a device in a Core Network (CN) that provides service support for the terminal device. Currently, examples of some core network devices are: access and mobility management function (access and mobility management function, AMF) entities, session management function (session management function, SMF) entities, user plane function (user plane function, UPF) entities, and the like, to name but a few. The AMF entity can be responsible for access management and mobility management of the terminal; the SMF entity may be responsible for session management, such as session establishment for a user, etc.; the UPF entity may be a functional entity of the user plane, mainly responsible for connecting to external networks. It should be noted that, in this application, an entity may also be referred to as a network element or a functional entity, for example, an AMF entity may also be referred to as an AMF network element or an AMF functional entity, and for example, an SMF entity may also be referred to as an SMF network element or an SMF functional entity.

The following describes terms of art to which embodiments of the present application may relate.

(1) NTN networks, i.e. satellite communication networks. In general, the higher the orbit of a satellite, the larger its coverage area, but the longer the delay of communication. In general, the orbit of a satellite can be classified into:

a. Low Earth Orbit (LEO): the track height is 160-2000 km;

b. middle rail (medium earth orbit, MEO): the track height is 2000-35786 km;

c. stationary rail (geostationary earth orbi, GEO): the orbit height is 35786km, and the relative position of the satellite running on the orbit and the earth is not influenced by the rotation of the earth.

The low-orbit communication satellite is close to the ground, short in communication time delay and high in data transmission rate, the weight and the volume of the mobile terminal are almost the same as those of personal mobile equipment, the low-orbit communication satellite is more suitable for popularization in mass markets, and the low-orbit communication satellite becomes a hot spot for the current industrial development.

(2)TA

TA is a concept set up by the LTE system or the NR system for location management of the UE. Which is defined as a free mobile area where the UE does not need an update service. The TA function is to manage the terminal location, and may be divided into paging management and location update management. The UE informs the core network of its own TA through tracking area registration.

When the UE is in idle state, the core network can know the tracking area where the UE is located, and when the UE in idle state needs to be paged, paging must be performed in all cells of the tracking area where the UE is registered.

(3)TAC

Within the TA of one UE, one or more divided areas may be included, each area having its corresponding tracking area code (tracking area code, TAC), i.e. one TA may include one or more areas corresponding to TAC.

In the terrestrial communication network (terrestrial network, TN), TACs are configured at a cell level, a plurality of cells can configure the same TAC, and one cell can only belong to an area corresponding to one TAC.

In NTN networks, due to the large coverage of cells, a cell may correspond to an area corresponding to one or more TACs.

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

(4)TAI

The TAC and the public land mobile network (public land mobile network, PLMN) together form a tracking area identity (tracking area identity, TAI), i.e. tai=plmn+tac. A plurality of TAIs form a TAI List (TAI List) and are simultaneously distributed to one UE, and the UE does not need to execute TA update (TAU) when moving in the TAI List so as to reduce frequent interaction with a network; when the UE enters an area not in the list of TAIs it registers, it needs to execute TAUs, the core network reallocates a set of TAIs to the UE, and the newly allocated TAIs may also contain some TAIs in the original TAI list

The TAC corresponds to the same area as the TAI. After the UE determines the TAC corresponding to its own position, the PLMN is added, and the corresponding TAI can be determined.

(5) Global district logo (cell global identifier CGI)

The CGI is used to identify the area covered by a cell. In a TN network, since the cell coverage of the gNB is smaller, the CGI range is smaller, and thus a plurality of CGIs are often included in one TAC. In NTN, the cell coverage of the gNB is larger (where one CGI may correspond to one or more TACs), in order to maintain the CGI operation mechanism in the TN network, the gNB maps a CGI with a larger range (called UU port CGI) to a CGI with a smaller range (called NG interface CGI) (where one TAC may correspond to one or more CGIs), and sends the CGI with a smaller range to the AMF.

The CGI referred to hereinafter is generally referred to as NG interface CGI unless specifically stated.

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

The UE may determine its precise geographic location and determine a corresponding coarse location according to the precise location, and before secure activation, the UE reports the coarse location to the gNB, which determines the NG port CGI and TAC accordingly, and reports the NG port CGI and/or TAC to the AMF.

In this process, the coarse position of the UE spans an area corresponding to a plurality of TACs, after the gNB acquires the coarse position sent by the UE, it cannot determine the unique TAC and/or the unique CGI corresponding to the UE, and after the AMF receives the CGI and/or the TAC sent by the gNB, it cannot perform access management of the UE according to the unique TAC or the CGI.

Based on this, referring to fig. 2A, a flowchart of a location information processing method according to an embodiment of the present application is shown in fig. 2A, where the method includes the following steps:

201. the terminal equipment acquires the position information of the terminal equipment.

The terminal equipment (hereinafter referred to as UE) acquires location information of the terminal equipment, that is, the UE acquires current accurate location information of itself. Specifically, the method can be obtained by a global navigation satellite system (global navigation satellite system, GNSS), a global positioning system (global positioning system, GPS), beidou positioning and the like. The location information may include explicit geographic coordinates, such as latitude and longitude information of the location, or coordinate information of a national grid coordinate system corresponding to the location, and these explicit geographic coordinates may be directly used as the precise location of the UE. Or the location information may also include implicit geographical coordinates, such as the city district street location, zip code, etc. where the location is located, which may be used to infer explicit geographical coordinates and then determine the precise location of the UE.

202. The terminal equipment determines coarse position information of the terminal equipment according to the position information of the terminal equipment.

The accurate position of the UE loses a certain accuracy to obtain a coarse position of the UE, i.e. the coarse position is a range of positions compared to the accurate position. For example, the exact location of the UE is (116.397, 39.916), indicating the east longitude 116.397 degrees, north latitude 39.916. Coarse position information obtained from the accurate position information may be, for example, (116, 39) and represents a position range in which the coarse position is composed of longitudes 116.000 to 116.999 and latitudes 39.000 to 39.999. For another example, the precise location is a precise address: the ss street 01 house number in the xx country yy city mm region, while the coarse location may be the xx country yy city mm region, etc.

203. The terminal equipment sends first information, wherein the first information comprises coarse position information of the terminal equipment and first indication information, and the first indication information is used for indicating a unique TAC corresponding to the position indicated by the position information of the terminal equipment.

In NTN networks, due to the large coverage area of cells, one or more areas corresponding to TACs may appear in one cell. After the gNB receives the coarse location of the UE, even if the cell to which the UE is connected is determined, since the coarse location of the UE is obtained with a certain accuracy according to the accurate location loss of the UE, if the coarse location of the UE intersects with the areas corresponding to the plurality of TACs, the gNB may not determine the unique TAC corresponding to the current accurate location of the UE according to the coarse location of the UE.

In this case, the UE may determine the unique TAC corresponding to the precise location of the UE according to the precise location information of the UE, and then when sending the coarse location to the gNB, send first indication information for indicating the unique TAC corresponding to the precise location of the UE, so that the gNB determines the unique TAC corresponding to the UE. The first indication information may be, for example, an index value of the TAC, or may be directly a specific TAC.

Before the UE obtains the unique TAC corresponding to the precise location of the UE, it needs to obtain the location area range division condition and the TACs corresponding to the location area ranges (i.e. the corresponding relationship between the location area ranges and the TACs), and then determine the TACs corresponding to the precise location of the UE according to the location area range where the precise location of the UE is located. The manner of acquiring the correspondence between the location area range and the TAC may include, but is not limited to, one or more of the following:

1. And acquiring according to the broadcast message sent by the access network equipment. The gNB may send a broadcast message to a plurality of UEs, and the broadcast message may include relevant information such as a correspondence between a location area range and TAC.

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

3. And acquiring according to the predefined information in the terminal equipment. The UE may store in advance the relevant information of the corresponding relationship between the location area range and the TAC, and directly read from the memory when obtaining the relevant information.

In this embodiment, the area may also be referred to as a location area or a location area range, and thus the area corresponding to TAC may also be referred to as a location area corresponding to TAC or a location area range corresponding to TAC.

The location area range may be expressed by longitude and latitude, and may also be expressed by country or region. The corresponding relation between the position area range and the TAC can be characterized by a table, a function, an algorithm or a neural network model and the like. In this embodiment of the present application, the latitude and longitude are used to represent the location area range, and the table is used to represent the correspondence between the location area range and the TAC as an example, specifically, refer to table 1, where table 1 is a correspondence table between the location area range and the TAC:

TABLE 1

	TAC	Location area scope
			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 encoded with one TAC. Wherein the position area range is (L ₁₁ ,L ₁₂ ) The representation area ranges from L ₁₁ To L ₁₂ . For example, assume L ₁₁ Is (110,30), L ₂₁ The (120, 40) indicates a positional range of 110 degrees to 120 degrees in east longitude and 30 degrees to 40 degrees in north latitude. The corresponding code of the position area range is TAC1.

Then, the TAC corresponding to the precise location of the UE is determined, that is, the location area range where the precise location of the UE is located is determined. 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 the UE sends the coarse position to the gNB, sending first indication information to indicate TAC1, including directly sending TAC1, or sending an index value "0" corresponding to TAC1, etc.

Optionally, before sending the first location information, the method further comprises: and determining that the tracking area code TAC corresponding to the position indicated by the coarse position information of the terminal equipment is more than one.

Assuming that the TAC corresponding to the coarse position of the UE is one, after the UE sends the coarse position information of the UE to the gNB, the gNB may determine the unique TAC corresponding to the UE, in this case, the UE may omit the process of determining the TAC corresponding to the accurate position of the UE and sending the first indication information to the gNB, so as to reduce resource overhead. Therefore, the UE may determine that the TAC corresponding to the coarse position of the UE is greater than one before performing step 203.

Specifically, as can be seen from the foregoing description, the location area ranges may correspond one-to-one to the TACs. If the current accurate position of the terminal equipment is in the range of the area corresponding to the TAC, the area can be determined to be the area corresponding to the target TAC, and then whether the TAC corresponding to the coarse position of the UE is larger than one is determined by determining whether the coarse position of the UE exceeds the range of the area corresponding to the target TAC. Referring to fig. 2B, fig. 2B is a schematic diagram of a relationship between a coarse position of a UE and an area corresponding to a target TAC according to an embodiment of the present application, and as shown in fig. 2B, it is assumed that a current accurate position of a terminal device is (116.397, 39.916), which is within a range of the area corresponding to the target TAC (areas corresponding to the target TAC are (110.50,38.50) to (116.50,40.50)), and corresponds to TAC1. The position indicated by the coarse position of the terminal device, that is, the coarse position of the terminal device, is a position range after precision loss, assuming (116, 39), the longitude range corresponding to the characterization coarse position is 116.00-116.99, the latitude range is 39.00-39.99, the longitude range of the area corresponding to the target TAC is 110.50-116.50, the longitude range corresponding to the coarse position can only be partially covered, that is, the coarse position exceeds the area corresponding to the target TAC, and it can be determined that the TAC corresponding to the coarse position of the terminal device is greater than one.

Specifically, the rough position of the terminal device may be directly compared with the areas corresponding to the TACs, and the intersection of the rough position and the position range area corresponding to the TACs may be determined. Referring to fig. 2C, fig. 2C is a schematic diagram of a relationship between a coarse position of a UE and areas corresponding to a plurality of TACs, and as shown in fig. 2C, it is assumed that the coarse position of the UE is (116, 39), and areas corresponding to TACs with values close to the two TACs are obtained from the areas corresponding to the plurality of TACs. Assuming that the areas corresponding to TAC1 are (110.50,38.50) to (116.59,40.50) and the areas corresponding to TAC2 are (116.60,38.50) to (120.50,40.50) in the areas corresponding to TACs, it can be known that the coarse position of the UE intersects with the areas corresponding to both TACs, and it is determined that the TAC corresponding to the coarse position of the UE is greater than one.

According to the above mode, the UE may obtain its coarse position and its TAC corresponding to the accurate position, further 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: an RCR restoration complete (rrcrecumecomplete) message, an RRC setup complete (rrcsetup complete) message, or an RRC reconfiguration complete (rrcrecnonfigurationcomplete) message, or an uplink information transfer (ulinfomation transfer) message.

204. The access network equipment receives the first information, determines second information according to the first information, wherein the second information comprises TACs corresponding to the terminal equipment and/or NG interface global cell identifiers CGI corresponding to the terminal equipment.

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

Specifically, assuming that the second information includes TAC corresponding to the UE, since the first information includes TAC corresponding to the accurate position of the UE, the gNB may directly transmit TAC received from the UE as TAC corresponding to the UE to the AMF, so that the AMF performs access management of the UE according to the TAC.

Or after the gNB receives the rough position information of the UE, determining the TAC corresponding to the position indicated by the rough position information of the UE (namely the rough position of the UE), and then sending the TAC corresponding to the accurate position of the UE and the TAC corresponding to the rough position of the UE to the AMF. Specifically, the TAC corresponding to the coarse position may be determined from the TAC corresponding to the region where the coarse position intersects. For example, if the coarse position has an intersection with the region corresponding to TAC1 and the region corresponding to TAC2, the TAC corresponding to the coarse position includes TAC1 and TAC2, and then the TAC1, TAC2, and the TAC indicated by the first indication information are all transmitted to the AMF as TACs corresponding to the UE.

Or if the gNB determines that the number of the TACs corresponding to the coarse position is greater than one, comparing and verifying the plurality of TACs corresponding to the coarse position with the unique TACs corresponding to the precise position of the UE determined according to the process, and if the unique TACs corresponding to the precise position of the UE are contained in the plurality of TACs corresponding to the coarse position, sending the unique TACs corresponding to the precise position to the AMF as the TACs 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 may be sent to the AMF, or a plurality of TACs corresponding to the coarse location of the UE may be sent to the AMF, or both the unique TAC corresponding to the precise location of the UE and the plurality of TACs corresponding to the coarse location of the UE may be sent to the AMF. Or, it may be determined that the process of sending the first information to the gNB by the UE is wrong, 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 one TAC according to the algorithm of the gNB and send the TAC to the AMF. Which TAC is specifically transmitted is determined by the gNB algorithm and is not limited herein.

In some cases, the second information includes an NG interface CGI corresponding to the UE. As can be seen from the foregoing description, multiple NG interfaces CGI may be corresponding to one TAC, after the gNB obtains the unique TAC corresponding to the precise location of the UE, the unique NG interface CGI may be determined according to the coarse location of the UE and the unique TAC corresponding to the precise location of the UE, and then the NG interface CGI is sent to the AMF.

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

It can be seen that, in this embodiment of the present application, the terminal device obtains a plurality of location area ranges and tracking area codes TAC corresponding to the plurality of location area ranges, then determines a unique TAC corresponding to the precise location of the terminal device and coarse location information corresponding to the precise location of the terminal device, and sends the first indication information and the coarse location information of the unique TAC to the access network device, so that the access network device determines a unique TAC or a unique NG interface CGI corresponding to the terminal device, and then sends the unique TAC to the AMF and/or according to the unique NG interface CGI, thereby ensuring that the access management process of the AMF to the terminal device is successfully executed.

Referring to fig. 3A, a flowchart of another location information processing method according to an embodiment of the present application is shown in fig. 3A, and the method includes the following steps:

301. the terminal device obtains the position information of the terminal device.

302. The terminal equipment determines coarse position information of the terminal equipment according to the position information of the terminal equipment.

In step 301 and step 302, the terminal device obtains its current accurate position information, and determines coarse position information according to the accurate position information, and the specific process is described in the foregoing step 201 and step 202, which are not described herein again.

303. And the terminal equipment sends the adjusted coarse position information, and the position indicated by the adjusted coarse position information corresponds to the unique TAC.

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

Optionally, the method further comprises: determining that the position indicated by the position information of the terminal equipment is in a first area; adjusting the position indicated by the position information of the terminal equipment, obtaining adjusted position information, and determining adjusted coarse position information according to the adjusted position information; or adjusting the position indicated by the coarse position information of the terminal equipment to obtain the adjusted coarse position information.

Optionally, the method further comprises: determining that the position indicated by the rough information of the terminal equipment is intersected with a plurality of first areas; adjusting the position indicated by the position information of the terminal equipment, obtaining adjusted position information, and determining adjusted coarse position information according to the adjusted position information; or adjusting the position indicated by the coarse position information of the terminal equipment to obtain the adjusted coarse position information.

The UE determines that the location indicated by the location information of the UE is in a first area, that is, the UE determines that the precise location of the UE is in the first area, where the first area may be the location indicated by the access network device (the indication may be sent by a second message, which may be an SIB1 message), or the location indicated by a NAS message issued by the core network, or a preset location in the UE. For example, the gNB may send indication information to the UE, indicating the first areas a1= (116.00, 38.50) - (116.59, 40.50), and the first areas a2= (116.60, 38.50) - (117.00, 40.50), referring to fig. 3B, for a first area schematic diagram provided in the embodiment of the present application, as shown in fig. 3B, the areas A1 and A2 are adjacent, and a1+a2 is an area formed by longitudes 116.00-117.00 and latitudes 38.50-40.50. The exact location of the UE is (116.39, 39.91), i.e. in the range of A1.

Determining the position indicated by the coarse position information of the UE, that is, that the coarse position has an intersection with a plurality of first areas, may first determine a first area A1 having an intersection with the coarse position of the UE, find that the coarse position of the UE does not completely belong to A1, compare the coarse position of the UE with a first area A2 adjacent to A1, find that the coarse position of the UE also has an intersection with A2, and thus determine that the coarse position of the UE has an intersection with a plurality of first areas. See in particular fig. 3B.

In the case that the UE determines that the own precise location is in the first area, or that the own coarse location intersects with a plurality of first areas, the UE may adjust the own precise location and then obtain adjusted coarse location information according to the adjusted precise location. Similarly, the relevant data (including adjustment distance, adjustment direction, etc.) of the UE for adjusting the accurate position of the UE corresponds to the first area to which the UE belongs (different first areas have different adjustment relevant data), which may be indicated by the access network device, or may be indicated by NAS message issued by the core network, or may be preset in the UE. For example, indication information is transmitted to the UE by the access network device for indicating that the accurate position of the UE moves 4 km western when the accurate position of the UE is in the first area A1.

It can be appreciated that the above adjustment of the precise location of the UE may cause the precise location of the UE after adjustment to not be in the first region.

Or, in case that the UE determines that the accurate position of the UE is in the first area or that the coarse position of the UE intersects with a plurality of first areas, the UE may adjust the coarse position of the UE and then obtain the adjusted coarse position information. Similarly, the data or mode of the UE for adjusting the coarse position corresponds to the first area (different first areas have different adjustment data or modes), and may be indicated by the access network device, or may 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 adjusting direction or adjusting distance, and the adjustment may be moving, doubling, cutting, or the like. For example, it is preset in the UE that when the accurate position of the UE is in the first area A1, the coarse position of the UE is folded in half in the longitudinal direction about the longitudinal boundary line between A1 and A2. Specifically, as shown in fig. 3C, fig. 3C is a schematic diagram of adjusting a coarse position of a terminal device provided in the embodiment of the present application, assuming that a coarse position c1= (116, 39) of a UE spans A1 and A2 in a longitudinal direction 116.00-116.99, the UE may be folded in half with a longitude boundary 116.59 (or 116.60) between A1 and A2 as an axis to obtain c1 '= (116.60, 39) - (116.99, 39) and c1' = (116.00, 39) - (116.59, 39), and since an accurate position of the UE is in a range of A1, C1 "in a range of A1 may be reserved as a coarse position after adjustment of the UE, and then adjusted coarse position information may be determined according to the adjusted coarse position.

Or, the rough position of the UE and the A1 (i.e. the first area where the accurate position of the UE is located) are intersected, then the rough position of the non-intersected part is cut, the intersection is reserved as the adjusted rough position, and the adjusted rough position indication information is used for indicating the adjusted rough position.

Alternatively, the rough position of the UE is moved, the original rough position of the UE is a position area corresponding to (116,39), and after the rough position is moved in the west (in a direction away from A2), the new rough position of the UE is a position area corresponding to (115,39).

It is appreciated that the above adjustment of the coarse position for the UE may be such that the coarse position of the UE after adjustment does not intersect with the plurality of first regions (only with one first region or with any first region).

In general, the first area divided by the access network device is an edge position or a border of an area corresponding to the TAC, and the access network device indicates the accurate position or the coarse position of the terminal device to change itself, so that the coarse position of the UE indicated by the adjusted coarse position information obtained according to the accurate position or the coarse position after the change of the UE can be used for the access network device to determine the unique TAC corresponding to the coarse position of the UE, and if the coarse position after the adjustment of the UE does not have an intersection with a plurality of first areas, the coarse position of the UE indicated by the adjusted coarse position information is certain to be in an area corresponding to a certain TAC, and the coarse position of the UE indicated by the adjusted coarse position information can be ensured to correspond to the unique TAC. In addition, in this case, the access network device may instruct the UE to change the relevant data of the accurate position or the coarse position of the UE, and the UE may not learn the correspondence between the location area range and the TAC.

Or, in some cases, as described in the foregoing corresponding embodiments of fig. 2A to fig. 2C, the UE may learn the correspondence between the location area range and the TAC, and then the indication information sent by the gNB may be used to indicate the distribution situation of the first area in the area corresponding to the TAC. For example, the first area may be an edge position in an area corresponding to each TAC, and specifically may be a position 1 km to 2 km away from the edge. Or the first area may be a position of a boundary of an area corresponding to each TAC and an area corresponding to another TAC, and if each area corresponding to each TAC is boundary with an area corresponding to another TAC, the first area may be a set of the areas corresponding to TACs and the boundary positions. In this case, the plurality of first areas among the areas corresponding to the plurality of TACs can be completely indicated by simple indication information without specific boundary or range indication for each first area. Specifically, referring to fig. 3D, fig. 3D is a schematic distribution diagram of a first area in an area corresponding to TAC in the embodiment of the present application, as shown in fig. 3D, the areas corresponding to TAC1, TAC2, TAC3 and TAC4 are mutually intersected, and S1, S2, S3 and S4 at the intersection are the first areas in the areas corresponding to TAC1, TAC2, TAC3 and TAC4, respectively.

Similarly, in the case that the UE determines that the accurate position of the UE is located in the first area, or that the coarse position of the UE intersects with a plurality of first areas, the UE may adjust the accurate position of the UE and then obtain the adjusted coarse position information according to the adjusted accurate position. Consistent with the above description, relevant data (including adjustment distance, adjustment direction, etc.) of the UE for adjusting the accurate position of the UE may be indicated by the access network device, or may be indicated by a NAS message issued by the core network, or may be preset in the UE. The difference is that, under the condition that the UE knows the region division corresponding to the TAC, the obtained related data for adjusting the accurate position of the UE can be based on the region corresponding to the TAC, not just based on the indication of the network, so that the overhead of network transmission information is saved. Referring specifically to fig. 3E, fig. 3E is a schematic diagram of adjusting an accurate position of a terminal device according to an embodiment of the present application, as shown in fig. 3E, for example, when an access network device indicates that the accurate position of a UE is in a first area, the access network device moves its accurate position to a position far from an edge of an area corresponding to a TAC by 10km. Let the area corresponding to TAC1 be (110.50,38.50) to (116.50,40.50), and s1= (116.30, 38.50) to 116.50, 40.50) in the area corresponding to TAC, the precise location L1 of the UE is (116.39, 39.91), is within S1, and is at the east edge of the area corresponding to TAC. Then the mobile station moves 10km to an edge position far from the corresponding area of the TAC1, i.e., moves to the west, and the longitude is-0.1, and the moved accurate position L1' is (116.29, 39.91) and is not in S1.

In the case that the UE determines that the accurate position of the UE is located in the first area or that the coarse position of the UE intersects with a plurality of first areas, the UE may adjust the coarse position of the UE and then obtain the adjusted coarse position information according to the adjusted coarse position. Consistent with the above description, the data or mode of the UE for adjusting the coarse position may be indicated by the access network device, or may 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 manner, such as moving, doubling, cutting, or the like, or an adjustment distance. The difference is that, in the case that the UE knows the region division corresponding to the TAC, the instruction information sent by the gNB may instruct the UE to perform position adjustment or coarse position adjustment based on the region corresponding to the TAC to obtain adjusted coarse position information, which reduces specific adjustment data sent by the gNB, for example, the gNB may instruct that, when the coarse position of the UE has an intersection with a plurality of first regions, a coarse position of a portion of the coarse position, which does not have an intersection with the region corresponding to the TAC of the precise position of the UE, may be cut, and the coarse position of the region corresponding to the TAC located in the precise position of the UE in the coarse position is reserved as the adjusted coarse position.

In the embodiment of the present application, when the correspondence between the location area range and the TAC is known, that is, when 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 a judging condition for whether to adjust the precise location or the coarse location, so that when the access network device indicates the first area to the terminal device, or indicates the precise location or the coarse location degree or the mode for adjusting the terminal device to the terminal device, the content of signaling transmission can be reduced, and the communication efficiency between the terminal device and the access network device is improved.

In an alternative example, when the UE does not know the first area, the adjustment of the accurate position or the coarse position of the UE can be completed only through the binding relationship between the position area range and the TAC, and the access network device is not required to issue the first area and the related indication information of the adjustment data in the process, so that the overhead of network transmission information is further saved.

Specifically, the UE acquires that the accurate position of the UE is L1, the coarse position corresponding to the accurate position is C1, the UE may determine the TAC corresponding to C1 according to the corresponding relation between the position area range and the TAC, and if the number of TACs corresponding to C1 is greater than one, the UE adjusts the accurate position or coarse position of the UE to obtain an adjusted coarse position, and the adjusted coarse position corresponds to a unique TAC, and sends the adjusted coarse position information to the gNB according to the adjusted coarse position information obtained by the adjusted coarse position, so that the gNB may be ensured to obtain the unique TAC corresponding to the adjusted coarse position. The procedure does not require the access network device to issue any indication.

304. The access network equipment receives the adjusted coarse position information, and determines second information according to the adjusted coarse position information, wherein the second information comprises TACs corresponding to the terminal equipment and/or NG interface global cell identifiers CGI corresponding to the terminal equipment.

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 position information, and the position indicated by the adjusted coarse position information corresponds to the unique TAC, so that after the coarse position of the UE is determined according to the adjusted coarse position information, the unique TAC corresponding to the coarse position of the UE can be determined. The gNB may send the unique TAC to the AMF, or further, determine a unique CGI corresponding to the UE according to the coarse location of the UE, and then send the CGI to the AMF. Or the unique TAC and the unique CGI may both be sent to the AMF, so that the AMF performs access management on the UE.

It can be seen that, in this embodiment of the present application, when the terminal device determines that the self accurate position is located in the first area, or the self coarse position has an intersection with a plurality of first areas, the self accurate position may be adjusted, and then the adjusted coarse position information may be obtained according to the adjusted accurate position, and also the self coarse position may be adjusted, so as to obtain the adjusted coarse position information. The terminal equipment sends the adjusted coarse position information to the access network equipment, so that the access network equipment can determine the unique TAC and/or the unique CGI according to the adjusted coarse position information, and further, the AMF can carry out access management on the terminal equipment.

In this embodiment of the present application, multiple TACs and PLMNs may determine multiple TAIs, and the multiple TAIs may form a TAI list (TAIlist) and be allocated to a UE, where the UE does not need to perform TA update (TAU) when moving in the TAI list, so as to reduce frequent interaction with a network; when the UE enters an area not in the TAI list registered by the UE, the TAU needs to be executed, and the core network reallocates a group of TAIs to the UE, where the newly allocated TAIs may also include some TAIs in the original TAI list; in addition to this, the UE may also perform TAU periodically to let the core network know the location of the UE.

AS described above, in the NTN, one cell may include one or more areas corresponding to TACs, and in the case that the area corresponding to multiple TACs is included, the Access Stratum (AS) of the terminal device does not know which area corresponding to TAC is in the area corresponding to TAC, so the AS layer of the UE reports multiple TACs and/or TAIs to the NAS layer of the UE, which results in that the NAS layer of the UE cannot determine whether the TAI corresponding to the current location of the UE is moved out of the TAI list, which results in that the UE cannot timely TAU and affects the normal user experience of the UE.

Based on this, referring to fig. 4, a flowchart of a location information processing method according to an embodiment of the present application is provided, as shown in fig. 4, and the method includes the following steps:

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

In this embodiment of the present application, the location related information of the UE may be the current accurate location of the UE itself, or may be other related information indirectly reflecting the location of the UE. As described in the foregoing embodiments corresponding to fig. 2A to fig. 2C, the manner in which the UE determines the current accurate position of the UE includes GNSS, GPS, beidou positioning, and the like. The obtained location information may be a display geographic coordinate or an implicit geographic coordinate.

Other relevant information indirectly reflecting the UE position may be, for example, a beam where the UE is located, and specifically, the beam where the UE is located and the corresponding beam number may be obtained through the access layer AS of the terminal device. Acquisition means include, but are not limited to: acquiring according to a synchronizing signal and/or a broadcasting message sent by access network equipment; and acquiring according to the synchronous signal and/or the broadcast message of the current wave beam sent by the access network equipment.

402. The access layer AS of the terminal equipment determines the TAC corresponding to the terminal equipment according to the position related information of the terminal equipment and the corresponding relation between the position area range and the TAC;

the UE may obtain the correspondence between the location area range and the TAC, and the specific correspondence may be as described in table 1 and the corresponding description. The manner of acquisition may include one or more of the following: acquiring according to a broadcast message sent by access network equipment; acquiring NAS information issued by a core network; and acquiring according to the predefined information in the terminal equipment. After the corresponding relation between the position area range and the TAC is obtained, the position area range where the UE is located can be determined according to the position indicated by the position related information of the UE, and then the TAC corresponding to the UE is determined according to the TAC corresponding to the position area range.

Specifically, assuming that the location related information of the UE is related information of an accurate location of the UE, a location area range to which the accurate location belongs may be determined, and since the accurate location of the UE is a location point and is located in a location area range, a unique TAC corresponding to the UE may be determined at this time.

Assuming that the position-related information of the UE is beam information of the UE, a position area range where the UE is located may be determined according to a beam indicated by the beam information of the UE (i.e., a beam number of the UE), and since the beam of the UE may be located in a plurality of position area ranges, one or more TACs corresponding to the UE may be determined according to the beam information of the UE.

In another possible implementation manner, assuming that the location related information of the UE is beam information of the UE, and the UE may directly obtain the correspondence between the beam information of the UE and TAC, the above step 402 may be correspondingly replaced with 402': the access layer AS of the terminal equipment determines the TAC corresponding to the terminal equipment according to the beam information of the terminal equipment and the corresponding relation between the beam information and the TAC.

Specifically, after determining the beam information of the UE, the AS of the UE may acquire a correspondence between the beam information and the TAC, where the acquiring manner may include one or more of the following: acquiring according to a broadcast message sent by access network equipment; and acquiring according to the broadcast message of the current wave beam sent by the access network equipment. After the correspondence between the beam and the TAC is acquired, the area where the UE is located and the corresponding TAC or TACs may be determined according to the beam indicated by the beam information of the UE (i.e., the beam number of the UE).

403. The access stratum AS of the terminal equipment sends second indication information to the non-access stratum NAS of the terminal equipment, wherein the indication information is used for indicating the TAC corresponding to the terminal equipment.

After determining the unique TAC corresponding to the area where the UE is located, the 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, so the indication information may be the unique TAC and/or TAI directly or may be an index number of the unique TAC and/or TAI. And the NAS determines the TAI of the area where the UE is located according to the indication information, determines whether the TAI is in a TAI list, if so, does not perform TAU, and if not, performs a TAU process.

In another possible implementation manner, the TAC determined by the UE through the beam may not be unique, but the number of TACs and/or TAIs reported to the NAS by the AS is reduced to some extent, so AS to help determine whether the TAI corresponding to the current location of the UE moves out of the TAI list.

In another possible implementation manner, the NAS of the non-access stratum of the UE may directly obtain the corresponding relationship between the location area range and the TAC according to the NAS message issued by the core network to the UE, or obtain the relationship between the location area range and whether to execute the TAU, and determine whether to execute the TAU according to the relationship and the location of the UE. Wherein the relation of the location area range and whether to execute TAU refers to indicating whether the range is to execute TAU for different location area ranges. 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, the TAU is not triggered. By way of further example, if the location of the UE is within a location area where TAU is not performed, 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 correspondence between the location area range and the TAC, the corresponding area of the TAC where the access layer is located is determined according to the accurate location of the access layer, and the corresponding unique TAC is sent to the non-access layer, so that the NAS determines the area corresponding to the TAC where the UE is located according to the unique TAC, and further, the TAU judgment and processing of the UE are performed in time, so that the paging efficiency is improved, and the overall system performance is improved.

As described previously, in some cases, for example, the NAS layer of the UE may need to trigger a periodic TAU procedure or may actively initiate mobile communications when the UE is in the idle state. Because the NAS of the UE cannot sense the coverage condition of the UE (whether the UE is within the coverage of the satellite signal), if the NAS layer of the UE triggers a periodic TAU procedure or actively initiates mobile communications when the UE is not covered, the transmitted signal network cannot receive the signal network, and the electric quantity of the UE and signaling of the network are wasted.

Based on this, referring to fig. 5, a flowchart of an information transmission processing method provided in an embodiment of the present application, as shown in fig. 5, includes the following steps:

501. the access stratum AS of the terminal equipment acquires the coverage condition of the terminal equipment, wherein the coverage condition comprises coverage or non-coverage.

The coverage condition of the terminal equipment comprises coverage or non-coverage, and the specific determining method can comprise the following steps:

(1) And determining the coverage condition of the terminal equipment according to the signal quality of the terminal equipment. And when the signal quality of the terminal equipment is larger than a first preset threshold value, determining that the UE has coverage, otherwise, determining that the UE has no coverage. The first preset threshold value may be a fixed signal value, or may be a signal value that varies according to the communication requirement.

(2) And determining the coverage condition of the terminal equipment according to the satellite auxiliary information provided for the terminal equipment and the position information of the terminal equipment. Satellite assistance information includes ephemeris information, satellite coverage information (e.g., reference points and coverage radii), etc., from which satellite coverage may be determined. And then determining whether the position of the terminal equipment is in the coverage range of the satellite, if so, determining that coverage exists, and otherwise, determining that no coverage exists.

502. The access stratum AS of the terminal equipment sends third indication information to the non-access stratum NAS of the terminal equipment, wherein the indication information is used for indicating the coverage condition of the terminal equipment.

The access stratum AS of the UE sends third indication information to the NAS of the UE, and the specific sending method includes, but is not limited to: the periodic transmission, the AS layer of the UE transmits upon detecting a coverage change, which includes a change from covered to uncovered or from uncovered to covered.

If the NAS layer of the UE receives the indication of no coverage, the periodic TAU process is not triggered or the mobile communication is not actively initiated. If the NAS layer of the UE receives the coverage indication, judging whether to trigger a TAU process or actively 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 situation of the terminal device, and sends the coverage situation to the NAS of the terminal device, so that the NAS of the terminal device adjusts the trigger timing of the periodic TAU and the timing of actively initiating mobile communication according to the coverage situation of the terminal device. When no coverage exists, the NAS layer of the UE does not actively trigger the period TAU and does not actively initiate mobile communication, so that the electric quantity of the UE is saved, the network signaling overhead is saved, and the overall network performance is improved. When coverage is restored, the NAS layer of the UE maximally restores the TAU process or actively initiates mobile communication according to the current and historical states, so that user experience is maximally ensured.

Fig. 6 is a schematic diagram of a communication apparatus 600 according to an embodiment of the present application, which may be used to perform the methods and embodiments performed by the access network devices of fig. 2A to 2C and fig. 3A to 3E. In one possible implementation, as shown in fig. 6, the apparatus 600 includes a processing unit 602 and a transmitting unit 603.

A processing unit 602, configured to obtain location information of a terminal device, and determine coarse location information of the terminal device according to the location information of the terminal device;

a transmitting unit 603, configured to transmit first information, where the first information includes coarse 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 the first information comprises the adjusted coarse position information, and the position indicated by the adjusted coarse position information corresponds to the unique TAC.

Optionally, before sending the first location information, the processing unit 602 is further configured to: and determining that the tracking area code TAC corresponding to the position indicated by the coarse position information of the terminal equipment is more than one.

Optionally, one TAC corresponds to one region.

Optionally, determining that the tracking area code TAC corresponding to the position indicated by the coarse position information of the terminal device is greater than one includes: determining an area corresponding to a target TAC to which a position indicated by the position information of the terminal equipment belongs; determining whether the position indicated by the rough position information of the terminal equipment exceeds the range of the area corresponding to the target TAC; if the position indicated by the coarse position information of the terminal equipment exceeds the range of the area corresponding to the target TAC, determining that the TAC corresponding to the position indicated by the coarse position information of the terminal equipment is more than one TAC.

Optionally, determining that the tracking area code TAC corresponding to the position indicated by the coarse position information of the terminal device is greater than one includes: comparing the position indicated by the coarse position information of the terminal equipment with the areas corresponding to the TACs, and determining whether the position indicated by the coarse position information of the terminal equipment has intersection with more than one area corresponding to one TAC in the areas corresponding to the TACs; if the position indicated by the coarse position information of the terminal equipment has intersection with more than one area corresponding to one TAC in the areas corresponding to the plurality of TACs, determining that the TAC corresponding to the position indicated by the coarse position information of the terminal equipment is more than one.

Optionally, the processing unit 602 is further configured to: determining that the position indicated by the position information of the terminal equipment is in a first area; adjusting the position indicated by the position information of the terminal equipment, obtaining adjusted position information, and determining adjusted coarse position information according to the adjusted position information; or adjusting the position indicated by the coarse position information of the terminal equipment to obtain the adjusted coarse position information.

Optionally, the processing unit 602 is further configured to: determining that the position indicated by the rough information of the terminal equipment is intersected with a plurality of first areas; adjusting the position indicated by the position information of the terminal equipment, obtaining adjusted position information, and determining adjusted coarse position information according to the adjusted position information; or adjusting the position indicated by the coarse position information of the terminal equipment to obtain the adjusted coarse position information.

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

Optionally, the communication apparatus 600 may further include a receiving unit 601, and the transmitting unit 603 and the receiving unit 601 may be interface circuits or transceivers. For receiving or transmitting data or instructions from other electronic devices.

Optionally, the communication device 600 may further comprise a storage unit (not shown in the figure), which may be used for storing data and/or signaling, and which 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 procedure in the foregoing method embodiment is performed.

Fig. 7 is a schematic diagram of a communication apparatus 700 according to an embodiment of the present application, which may be used to execute the methods and embodiments executed by the terminal devices of fig. 2A to 2C and fig. 3A to 3E. In a possible implementation, as shown in fig. 7, the apparatus 700 includes a transmitting unit 701, a receiving unit 702, and a processing unit 703.

A receiving unit 702, configured to receive first information, where the first information includes coarse 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;

A processing unit 703, configured to determine second information according to the first information, where the second information includes a TAC corresponding to the terminal device and/or an NG interface global cell identifier CGI corresponding to the terminal device;

a sending unit 701, configured to send the second information to an access and mobility management function AMF.

Optionally, if the second information includes TAC corresponding to the terminal device, determining the second location information according to the first information includes: and determining the unique TAC corresponding to the position indicated by the position information of the terminal equipment according to the first indication information, and taking the unique TAC corresponding to the position indicated by the position information of the terminal equipment as the TAC corresponding to the terminal equipment.

Optionally, if the second information includes an NG interface CGI corresponding to the terminal device, determining the second location information according to the first information includes: and determining the NG interface CGI according to the position indicated by the rough position information of the terminal equipment and the unique TAC corresponding to the position indicated by the position information of the terminal equipment.

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

Alternatively, the receiving unit 702 and the transmitting unit 701 may be interface circuits or transceivers. For receiving or transmitting data or signaling from other electronic devices.

Optionally, the communication device 700 may further comprise a storage unit (not shown in the figure), which may be used for storing data and/or signaling, and which may be coupled to the receiving unit 702, the transmitting 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 apparatus 600 and the communication apparatus 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 communicatively connected to each other through a bus 804.

The Memory 801 may be a 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 programs, and when the programs stored in the memory 801 are executed by the processor 802, the processor 802 and the communication interface 803 are used to perform the respective steps of the distributed rendering method of the embodiments of the present application.

The processor 802 may be 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 to implement the functions required to be performed by the receiving unit 601, the processing unit 602, and the transmitting unit 603 in the communication device 600 of the embodiment of the present application, or implement the functions required to be performed by the transmitting unit 701, the receiving unit 702, and the processing unit 703 in the communication device 700, or perform the location information processing method of the embodiment of the method of the present application.

The processor 802 may also be an integrated circuit chip with signal processing capabilities. In implementation, various steps of the distributed rendering methods of the present application may be accomplished by instructions in the form of integrated logic circuits or software of hardware in the processor 802. The processor 802 described above may also be a general purpose processor, a digital signal processor (Digital Signal Processing, DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in the memory 801, and the processor 802 reads information in the memory 801, and in combination with hardware thereof, performs functions required to be executed by the modules included in the communication apparatus 600 or 700 of the embodiment of the present application, or executes the location information processing method of the embodiment of the method of the present application.

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

It should be noted that while the electronic device 800 shown in fig. 8 shows only a memory, a processor, and a communication interface, those skilled in the art will appreciate that in a particular implementation, the electronic device 800 also includes other components necessary to achieve proper operation. Also, as will be appreciated by those skilled in the art, the electronic device 800 may also include hardware components that perform other additional functions, as desired. Furthermore, it will be appreciated by those skilled in the art that the electronic device 800 may also include only the components necessary to implement the embodiments of the present application, and not necessarily all of the components shown in FIG. 8.

The embodiment of the application also provides a communication system, which comprises a first communication device and a second communication device, wherein the first communication device can be used for executing the method executed by the access network equipment of the foregoing fig. 2A-2C and fig. 3A-3E, and the second communication device can be used for executing the method executed by the terminal equipment of the foregoing fig. 2A-2C and fig. 3A-3E.

Furthermore, the present application provides a computer program for implementing the operations and/or processes performed by the first communication device in the method provided in the present application.

The present application also provides a computer program for implementing the operations and/or processes performed by the second communication device in the methods provided herein.

The present application also provides a computer readable storage medium having stored therein a computer program or computer executable instructions which, when run on a computer, cause the computer to perform the operations and/or processes performed by the first communication device in the methods provided herein.

The present application also provides a computer readable storage medium having stored therein a computer program or computer executable instructions which, when run on a computer, cause the computer to perform the operations and/or processes performed by the second communication device in the methods provided herein.

The present application also provides a computer program product comprising computer executable instructions or a computer program which, when run on a computer, cause operations and/or processing performed by the first communication device in the method provided by the present application to be performed.

The present application also provides a computer program product comprising computer executable instructions or a computer program which, when run on a computer, cause operations and/or processes performed by the second communication device in the methods provided herein to be performed.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described system, apparatus and module may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules is merely a logical function division, and there may be additional divisions of actual implementation, e.g., multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.

The modules illustrated as separate components may or may not be physically separate, and components shown as modules may or may not be physical modules, i.e., may be located in one place, or may be distributed over a plurality of network modules. Some or all of the modules may 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, or each module may exist alone physically, or two or more modules may be integrated into one module.

The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored on a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

Claims

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

acquiring position information of terminal equipment;

determining coarse position information of the terminal equipment according to the position information of the terminal equipment;

transmitting first information, wherein the first information comprises coarse position information of the terminal equipment and first indication information, and the first indication information is used for indicating a unique tracking area code TAC corresponding to a position indicated by the position information of the terminal equipment; or the first information comprises adjusted coarse position information, and the position indicated by the adjusted coarse position information corresponds to the unique TAC.

2. The method of claim 1, wherein prior to transmitting the first location information, the method further comprises: and determining that the TAC corresponding to the position indicated by the coarse position information of the terminal equipment is more than one.

3. A method according to claim 1 or 2, characterized in that one TAC corresponds to one zone.

4. A method according to claim 3, wherein said determining that the tracking area code TAC corresponding to the location indicated by the coarse location information of the terminal device is greater than one comprises:

determining an area corresponding to a target TAC to which the position indicated by the position information of the terminal equipment belongs;

determining whether the position indicated by the coarse position information of the terminal equipment exceeds the range of the area corresponding to the target TAC;

if the position indicated by the coarse position information of the terminal equipment exceeds the range of the area corresponding to the target TAC, determining that the TAC corresponding to the position indicated by the coarse position information of the terminal equipment is more than one.

5. A method according to claim 3, wherein said determining that the tracking area code TAC corresponding to the location indicated by the coarse location information of the terminal device is greater than one comprises:

Comparing the position indicated by the coarse position information of the terminal equipment with the areas corresponding to the TACs, and determining whether the position indicated by the coarse position information of the terminal equipment has intersection with more than one area corresponding to one TAC in the areas corresponding to the TACs;

if the position indicated by the coarse position information of the terminal equipment is intersected with the area corresponding to more than one TAC in the areas corresponding to the plurality of TACs, determining that the TAC corresponding to the position indicated by the coarse position information of the terminal equipment is more than one TAC.

6. The method according to any of claims 1-5, wherein in case the first information comprises adjusted coarse position information, the method further comprises:

determining that the position indicated by the position information of the terminal equipment is in a first area; the method comprises the steps of carrying out a first treatment on the surface of the

Adjusting the position indicated by the position information of the terminal equipment, obtaining adjusted position information, and determining adjusted coarse position information according to the adjusted position information; or (b)

And adjusting the position indicated by the coarse position information of the terminal equipment to obtain the adjusted coarse position information.

7. The method according to any of claims 1-5, wherein in case the first information comprises adjusted coarse position information, the method further comprises:

Determining that the position indicated by the rough information of the terminal equipment has intersection with a plurality of first areas;

8. A position information processing method, characterized in that the method comprises:

receiving first information, wherein the first information comprises coarse position information of the terminal equipment and first indication information, and the first indication information is used for indicating a unique TAC corresponding to a position indicated by the position information of the terminal equipment;

determining second information according to the first information, wherein the second information comprises TACs corresponding to the terminal equipment and/or NG interface global cell identifiers CGI corresponding to the terminal equipment;

and sending the second information to an access and mobility management function AMF.

9. The method of claim 8, wherein if the second information includes TAC corresponding to the terminal device, the determining the second location information according to the first information includes:

And determining a unique TAC corresponding to the position indicated by the position information of the terminal equipment according to the first indication information, and taking the unique TAC corresponding to the position indicated by the position information of the terminal equipment as the TAC corresponding to the terminal equipment.

10. The method of claim 8, wherein if the second information includes an NG interface CGI corresponding to the terminal device, the determining the second location information according to the first information includes:

and determining the CGI according to the position indicated by the rough position information of the terminal equipment and the unique TAC corresponding to the position indicated by the position information of the terminal equipment.

11. A communication device, the device comprising:

the processing unit is used for acquiring the position information of the terminal equipment and determining the coarse position information of the terminal equipment according to the position information of the terminal equipment;

a sending unit, configured to send first information, where the first information includes coarse 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 the first information comprises adjusted coarse position information, and the position indicated by the adjusted coarse position information corresponds to the unique TAC.

12. The apparatus of claim 11, wherein the processing unit is further configured to, prior to transmitting the first location information: and determining that the tracking area code TAC corresponding to the position indicated by the coarse position information of the terminal equipment is more than one.

13. The apparatus of claim 11 or 12, wherein one TAC corresponds to one zone.

14. The apparatus of claim 13, wherein the determining that the tracking area code TAC corresponding to the location indicated by the coarse location information of the terminal device is greater than one includes:

15. The apparatus of claim 13, wherein the determining that the tracking area code TAC corresponding to the location indicated by the coarse location information of the terminal device is greater than one includes:

16. The apparatus according to any one of claims 11-15, wherein the processing unit is further configured to:

determining that the position indicated by the position information of the terminal equipment is in a first area;

17. The apparatus according to any one of claims 11-15, wherein the processing unit is further configured to:

18. A communication device, the device comprising:

a receiving unit, configured to receive first information, where the first information includes coarse 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 is used for determining second information according to the first information, wherein the second information comprises TACs corresponding to the terminal equipment and/or NG interface global cell identifiers CGI corresponding to the terminal equipment;

and the sending unit is used for sending the second information to an access and mobility management function (AMF).

19. The apparatus of claim 18, wherein if the second information includes TAC corresponding to the terminal device, the determining the second location information according to the first information includes:

20. The apparatus of claim 18, wherein if the second information includes an NG interface CGI corresponding to the terminal device, the determining the second location information according to the first information includes:

21. A computer readable storage medium having instructions stored thereon for implementing the method of any of claims 1 to 7 or the method of any of claims 8 to 10 when the instructions are executed.

22. A chip system, comprising: a processor for executing a stored computer program for executing the method of any one of claims 1 to 7 or the method of any one of claims 8 to 10.

23. A computer program product, the computer program product comprising: computer program which, when run, causes the method of any one of claims 1 to 7 to be performed or causes the method of any one of claims 8 to 10 to be performed.