CN115885580A

CN115885580A - Position registration method and terminal equipment

Info

Publication number: CN115885580A
Application number: CN202080103162.1A
Authority: CN
Inventors: 李海涛; 胡奕
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2023-03-31
Also published as: WO2022082433A1

Abstract

The embodiment of the application provides a position registration method and terminal equipment, and under the condition that a plurality of TACs are broadcasted in a cell, the initiation of a position registration process is reduced to the maximum extent and signaling overhead is reduced by comparing the registration positions of the plurality of TACs and the terminal equipment. The position registration method comprises the following steps: the terminal equipment acquires a TAC list of a target cell; and the terminal equipment determines whether to initiate a position registration process according to the TAC list of the target cell and the TAC list registered by the terminal equipment.

Description

Position registration method and terminal equipment

Technical Field

The embodiment of the application relates to the field of communication, and in particular relates to a method for registering a location and a terminal device.

Background

In a New Radio (NR) system, each cell broadcasts only one Tracking Area Code (TAC). When a terminal device in an idle (idle) state or a deactivated (inactive) state performs cell reselection, if a TAC broadcasted by a new cell does not belong to a set of Tracking Areas (TAs) registered by the terminal device, the terminal device initiates a location registration procedure to an Access and Mobility Management Function (AMF) entity to update a Tracking Area list. However, in a Non Terrestrial Network (NTN) scenario, due to the movement of low earth orbit satellites, the cells covered by the ground are not fixed in the geographical position, which brings a new challenge to the maintenance of the tracking area.

Disclosure of Invention

The embodiment of the application provides a position registration method and terminal equipment, and under the condition that a plurality of TACs are broadcasted in a cell, the initiation of a position registration process is reduced to the maximum extent and signaling overhead is reduced by comparing the registration positions of the plurality of TACs and the terminal equipment.

In a first aspect, a method for location registration is provided, where the method includes:

the terminal equipment acquires a TAC list of a target cell;

and the terminal equipment determines whether to initiate a position registration process according to the TAC list of the target cell and the TAC list registered by the terminal equipment.

In some embodiments, the determining, by the terminal device, whether to initiate a location registration procedure according to the TAC list of the target cell and the TAC list registered by the terminal device includes:

under the condition that each TAC in the TAC list of the target cell does not belong to the TAC list registered by the terminal equipment, the terminal equipment determines to initiate a position registration process;

and under the condition that part or all TACs in the TAC list of the target cell belong to the TAC list registered by the terminal equipment, the terminal equipment determines not to initiate a position registration process.

under the condition that the TAC list of the target cell and the TAC list registered by the terminal equipment do not have an intersection, the terminal equipment determines to initiate a position registration process;

and under the condition that the intersection exists between the TAC list of the target cell and the TAC list registered by the terminal equipment, the terminal equipment determines not to initiate a position registration process.

In some embodiments, the acquiring, by the terminal device, a TAC list of the target cell includes:

after the terminal device selects the target cell through a cell reselection process, the terminal device obtains a TAC list of the target cell by reading system information broadcast of the target cell.

In some embodiments, the method further comprises:

and under the condition that the terminal equipment determines to initiate the position registration process, the terminal equipment initiates the position registration process to an access and mobility management function (AMF) entity.

In some embodiments, the method is applied to NTN.

In a second aspect, a terminal device is provided, which is configured to perform the method in the first aspect or each implementation manner thereof.

Specifically, the terminal device includes a functional module configured to execute the method in the first aspect or its implementation manner.

In a third aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method in the first aspect or each implementation manner thereof.

In a fourth aspect, an apparatus is provided for implementing the method of the first aspect or its implementation manners.

Specifically, the apparatus includes: a processor configured to invoke and run the computer program from the memory, so that the device on which the apparatus is installed performs the method according to the first aspect or its implementations.

In a fifth aspect, a computer-readable storage medium is provided for storing a computer program, which causes a computer to execute the method of the first aspect or its implementations.

A sixth aspect provides a computer program product comprising computer program instructions for causing a computer to perform the method of the first aspect or its implementations.

In a seventh aspect, a computer program is provided, which, when run on a computer, causes the computer to perform the method of the first aspect or its implementations.

Through the technical scheme, the terminal equipment determines whether to initiate a position registration process according to the TAC list of the target cell and the TAC list registered by the terminal equipment. That is to say, in the case that the target cell broadcasts the TAC list(s), the initiation of the location registration process is minimized and the signaling overhead is reduced by comparing the TAC list of the target cell with the TAC list registered by the terminal device.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture to which an embodiment of the present application is applied.

Fig. 2 is a schematic flow chart of a method for location registration provided according to an embodiment of the present application.

Fig. 3 is a schematic flow chart of location registration provided according to an embodiment of the present application.

Fig. 4 is a schematic flow chart of another location registration provided according to an embodiment of the present application.

Fig. 5 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

Fig. 6 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

Fig. 7 is a schematic block diagram of an apparatus provided according to an embodiment of the present application.

Fig. 8 is a schematic block diagram of a communication system provided according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without making any creative effort with respect to the embodiments in the present application belong to the protection scope of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an Advanced Long Term Evolution (Advanced Long Term Evolution, LTE-a) System, a New Radio (NR) System, an Evolution System of an NR System, an LTE (LTE-based Access to unlicensed spectrum, LTE-U) System on an unlicensed spectrum, an NR (NR-based Access to unlicensed spectrum, non-Terrestrial communication network (network-telecommunications), a Wireless Local Area network (UMTS) System, a Wireless Local Area network (UMTS) 5 (Universal Mobile telecommunications network, UMTS) System, a Wireless Local Area network (Wireless Telecommunication System, wiFi) System, a Wireless Local Area network (Wireless Telecommunication System, or Wireless Telecommunication System, and the like.

Generally, the conventional Communication system supports a limited number of connections and is easy to implement, however, with the development of Communication technology, the mobile Communication system will support not only conventional Communication but also, for example, device to Device (D2D) Communication, machine to Machine (M2M) Communication, machine Type Communication (MTC), vehicle to Vehicle (V2V) Communication, or Vehicle to internet (V2X) Communication, and the embodiments of the present application can also be applied to these Communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a Carrier Aggregation (CA) scenario, may also be applied to a Dual Connectivity (DC) scenario, and may also be applied to an independent (SA) networking scenario.

Optionally, the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; alternatively, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where the licensed spectrum may also be regarded as an unshared spectrum.

Various embodiments are described in connection with a network device and a terminal device, where the terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment.

The terminal device may be a STATION (ST) in a WLAN, and may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) STATION, a Personal Digital Assistant (PDA) device, a handheld device with Wireless communication capability, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next generation communication system such as an NR Network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) Network, and so on.

In the embodiment of the application, the terminal equipment can be deployed on the land, including indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.).

In the embodiment of the present application, the terminal device may be a Mobile Phone (Mobile Phone), a tablet personal computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned driving (self driving), a wireless terminal device in remote medical treatment (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home), or the like.

By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of applying wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application function, and need to be matched with other equipment such as a smart phone for use, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

In this embodiment of the present application, the network device may be a device for communicating with a mobile device, and the network device may be an Access Point (AP) in a WLAN, a Base Station (BTS) in GSM or CDMA, a Base Station (NodeB, NB) in WCDMA, an evolved Node B (eNB or eNodeB) in LTE, a relay Station or an Access Point, a vehicle-mounted device, a wearable device, and a network device or Base Station (gbb) in an NR network, or a network device or Base Station (gbb) in a PLMN network for future evolution, or a network device in an NTN network, and the like.

By way of example and not limitation, in embodiments of the present application, a network device may have a mobile nature, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a Medium Earth Orbit (MEO) satellite, a geosynchronous Orbit (GEO) satellite, a High Elliptic Orbit (HEO) satellite, and the like. Alternatively, the network device may be a base station installed on land, water, or the like.

In this embodiment, a network device may provide a service for a cell, and a terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource or a frequency spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (for example, a base station), the cell may belong to a macro base station, and may also belong to a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells), and the like, and the small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission services.

Illustratively, a communication system 100 applied in the embodiment of the present application is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area.

Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above and are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application. The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions.

It should be understood that "indication" mentioned in the embodiments of the present application may be a direct indication, an indirect indication, or an indication of an association relationship. For example, a indicates B, which may indicate that a directly indicates B, e.g., B may be obtained by a; it may also mean that a indicates B indirectly, for example, a indicates C, and B may be obtained by C; it can also mean that there is an association between a and B.

In the description of the embodiments of the present application, the term "correspond" may indicate that there is a direct correspondence or an indirect correspondence between the two, may also indicate that there is an association between the two, and may also indicate and be indicated, configure and configured, and so on.

In the embodiment of the present application, "predefining" may be implemented by pre-saving a corresponding code, table or other means that can be used to indicate related information in a device (for example, including a terminal device and a network device), and the present application is not limited to a specific implementation manner thereof. Such as predefined, may refer to what is defined in the protocol.

In the embodiment of the present application, the "protocol" may refer to a standard protocol in the field of communications, and for example, may include an LTE protocol, an NR protocol, and a related protocol applied in a future communication system, which is not limited in the present application.

For better understanding of the embodiments of the present application, NTN related to the present application will be described.

The 5G NR system defines the NTN system deployment scenario including the satellite network. The NTN generally provides communication services to terrestrial users by way of satellite communications. Satellite communications have many unique advantages over terrestrial cellular communications. First, satellite communication is not limited by user regions, for example, general terrestrial communication cannot cover regions where communication equipment cannot be set up, such as the sea, mountains, desert, and the like, or communication coverage is not performed due to sparse population, and for satellite communication, since one satellite can cover a large ground and the satellite can orbit around the earth, theoretically every corner on the earth can be covered by satellite communication. Second, satellite communication has great social value. Satellite communication can be covered in remote mountainous areas, poor and laggard countries or areas with lower cost, so that people in the areas can enjoy advanced voice communication and mobile internet technology, the digital gap between the areas is favorably reduced and developed, and the development of the areas is promoted. Thirdly, the satellite communication distance is long, and the communication cost is not obviously increased when the communication distance is increased; and finally, the satellite communication has high stability and is not limited by natural disasters.

Communication satellites are classified into Low-Earth Orbit (LEO) satellites, medium-Earth Orbit (MEO) satellites, geosynchronous Orbit (GEO) satellites, high-elliptic Orbit (HEO) satellites, and the like according to the difference in orbital height.

For example, LEO satellites have an altitude ranging from 500km to 1500km, with a corresponding orbital period of about 1.5 hours to 2 hours. The signal propagation delay for inter-user single-hop communications is typically less than 20ms. Maximum satellite visibility time 20 minutes. The signal propagation distance is short, the link loss is less, and the requirement on the transmitting power of the user terminal is not high.

As another example, the GEO satellite orbit has a height of 35786km and a period of 24 hours of rotation around the earth. The signal propagation delay for inter-user single-hop communications is typically 250ms.

For the NTN system, in order to ensure the coverage of the satellite and improve the system capacity of the entire satellite communication system, the satellite covers the ground by using multiple beams, and one satellite can form dozens or even hundreds of beams to cover the ground; a satellite beam may cover a terrestrial region several tens to hundreds of kilometers in diameter.

In order to better understand the embodiments of the present application, a Location registration (Location registration) process related to the present application will be described.

The terminal device may register a set of tracking areas with the AMF entity. Generally, a tracking area will contain a plurality of cells, and when the AMF entity needs to page the terminal device, it sends a paging message to all cell base stations in the group of tracking areas. Currently, only one Tracking Area Code (TAC) is broadcast per 5G cell. When a terminal device in idle/inactive state performs cell reselection, if a TAC broadcasted by a new cell does not belong to a group of tracking areas registered by the terminal device, the terminal device initiates a location registration process to an AMF entity, and updates a tracking area list.

In the NTN scenario, the cells covered by the ground are not fixed in geographical position due to the movement of the low-earth orbit satellites, which brings new challenges to the maintenance of the tracking area.

Based on the above problem, the present application provides a location registration scheme, which reduces initiation of a location registration process to the maximum extent and reduces signaling overhead by comparing registration locations of a plurality of TACs and terminal devices in the case that a cell broadcasts a plurality of TACs.

The technical solution of the present application is described in detail by specific examples below.

Fig. 2 is a schematic flow chart of a method 200 of location registration according to an embodiment of the present application, and as shown in fig. 2, the method 200 may include at least part of the following:

s210, the terminal equipment acquires a TAC list of a target cell;

s220, the terminal device determines whether to initiate a location registration procedure according to the TAC list of the target cell and the TAC list registered by the terminal device.

It should be noted that one TAC list may include one or more TACs.

In the embodiment of the present application, the target cell may broadcast the TAC list. For example, at different tracking area boundaries, a cell covering the tracking area boundary may broadcast multiple TACs to reduce the frequency of location registration procedure initiations.

Optionally, the embodiments of the present application may be applied to an NTN network. Of course, the embodiments of the present application may also be applied to other networks, and the present application does not limit this.

In some embodiments, the terminal device obtains a TAC list registered by the terminal device from the AMF entity in the location registration procedure.

Optionally, in some embodiments, S210 may specifically be:

Optionally, in some embodiments, S220 may specifically be:

That is to say, as long as there is a TAC list in the TAC list of the target cell, where a TAC belongs to the TAC list registered by the terminal device, the terminal device may determine not to initiate the location registration procedure.

Optionally, the terminal device initiates a location registration procedure when each TAC in the TAC list of the target cell does not belong to the TAC list registered by the terminal device;

and under the condition that part or all TACs in the TAC list of the target cell belong to the TAC list registered by the terminal equipment, the terminal equipment does not initiate a position registration process.

For example, as shown in fig. 3, the terminal device may specifically initiate a location registration procedure through S11 to S14.

S11, a TAC list registered by the terminal equipment in the AMF entity comprises TAC 0, TAC 1 and TAC 2;

s12, after the terminal device selects the target cell through a cell reselection process, the terminal device obtains a TAC list of the target cell by reading system information of the target cell broadcasted by gNB, wherein the TAC list of the target cell comprises TAC 3 and TAC 4;

s13, the terminal equipment judges that each TAC in the TAC list of the target cell does not belong to the TAC list registered by the terminal equipment;

s14, the terminal equipment initiates a position registration process to the AMF entity.

For another example, suppose that a TAC list registered by the terminal device in the AMF entity includes TAC 0, TAC 1, and TAC 2, the terminal device obtains the TAC list of the target cell and includes TAC 0 and TAC 4, and the terminal device determines that the TAC 0 included in the TAC list of the target cell belongs to the TAC list registered by the terminal device, in this case, the terminal device does not initiate a location registration procedure to the AMF entity.

For another example, assume that a TAC list registered by the terminal device in the AMF entity includes TAC 0, TAC 1, and TAC 2, the terminal device obtains the TAC list of the target cell and includes TAC 0 and TAC 1, and the terminal device determines that both TAC 0 and TAC 1 included in the TAC list of the target cell belong to the TAC list registered by the terminal device, and in this case, the terminal device does not initiate a location registration procedure to the AMF entity.

Optionally, in other embodiments, S220 may specifically be:

the terminal equipment determines to initiate a position registration process under the condition that an intersection exists between the TAC list of the target cell and the TAC list registered by the terminal equipment;

Optionally, the terminal device initiates a location registration procedure when there is no intersection between the TAC list of the target cell and the TAC list registered by the terminal device;

and under the condition that the intersection exists between the TAC list of the target cell and the TAC list registered by the terminal equipment, the terminal equipment does not initiate a position registration process.

For example, as shown in fig. 4, the terminal device may specifically initiate a location registration procedure through S21-S24.

S21, a TAC list registered by the terminal equipment in the AMF entity comprises TAC 0, TAC 1, TAC 2 and TAC 3;

s22, after the terminal device selects the target cell through a cell reselection process, the terminal device obtains a TAC list of the target cell by reading system information of the target cell broadcasted by gNB, wherein the TAC list of the target cell comprises TAC 4 and TAC 5;

s23, the terminal equipment judges that the TAC list of the target cell does not have an intersection with the TAC list registered by the terminal equipment;

s24, the terminal equipment initiates a position registration process to the AMF entity.

For another example, suppose that a TAC list registered by the terminal device in the AMF entity includes TAC 0, TAC 1, TAC 2, and TAC 3, the terminal device obtains the TAC list of the target cell including TAC 0 and TAC 6, and the terminal device determines that there is an intersection between the TAC list of the target cell and the TAC list registered by the terminal device, and in this case, the terminal device does not initiate a location registration procedure to the AMF entity.

For another example, assume that a TAC list registered by the terminal device in the AMF entity includes TAC 0, TAC 1, TAC 2, and TAC 3, the terminal device obtains the TAC list of the target cell including TAC 0 and TAC 2, and the terminal device determines that there is an intersection between the TAC list of the target cell and the TAC list registered by the terminal device, and in this case, the terminal device does not initiate a location registration procedure to the AMF entity.

Optionally, in some embodiments, in a case that the terminal device determines to initiate the location registration procedure, the terminal device initiates the location registration procedure with the AMF entity to update the tracking area list.

Therefore, in the embodiment of the present application, the terminal device determines whether to initiate a location registration procedure according to the TAC list of the target cell and the TAC list registered by the terminal device. Further, the terminal device determines whether a TAC in the TAC list of the target cell belongs to a TAC list registered by the terminal device, and determines whether to initiate a location registration process. Or, the terminal device judges whether an intersection exists between the TAC list of the target cell and the TAC list registered by the terminal device, and determines whether to initiate a location registration process. That is to say, in the case that the target cell broadcasts the TAC list(s), the initiation of the location registration process is reduced to the maximum extent and the signaling overhead is reduced by comparing the TAC list of the target cell with the TAC list registered by the terminal device.

Method embodiments of the present application are described in detail above with reference to fig. 2-4, and apparatus embodiments of the present application are described in detail below with reference to fig. 5-8, it being understood that apparatus embodiments correspond to method embodiments and that similar descriptions may be made to method embodiments.

Fig. 5 shows a schematic block diagram of a terminal device 300 according to an embodiment of the application. As shown in fig. 5, the terminal device 300 includes:

a communication unit 310, configured to acquire a TAC list of a target cell;

a processing unit 320, configured to determine whether to initiate a location registration procedure according to the TAC list of the target cell and the TAC list registered by the terminal device.

Optionally, the processing unit 320 is specifically configured to:

determining to initiate a position registration process under the condition that each TAC in the TAC list of the target cell does not belong to the TAC list registered by the terminal equipment;

and under the condition that part or all TACs in the TAC list of the target cell belong to the TAC list registered by the terminal equipment, determining not to initiate a position registration process.

Optionally, the processing unit 320 is specifically configured to:

determining to initiate a position registration process under the condition that intersection does not exist between the TAC list of the target cell and the TAC list registered by the terminal equipment;

and under the condition that intersection exists between the TAC list of the target cell and the TAC list registered by the terminal equipment, determining not to initiate a position registration process.

Optionally, the communication unit 310 is specifically configured to:

and after the terminal equipment selects the target cell through a cell reselection process, acquiring a TAC list of the target cell by reading system information broadcast of the target cell.

Optionally, the communication unit 310 is further configured to initiate a location registration procedure with an access and mobility management function, AMF, entity in case the terminal device determines to initiate the location registration procedure.

Optionally, the terminal device 300 is applied to a non-terrestrial communication network NTN.

Optionally, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system on a chip. The processing unit may be one or more processors.

It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the terminal device 300 are respectively for implementing the corresponding flow of the terminal device in the method 200 shown in fig. 2, and are not described herein again for brevity.

Fig. 6 is a schematic structural diagram of a communication device 400 according to an embodiment of the present application. The communication device 400 shown in fig. 6 includes a processor 410, and the processor 410 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 6, the communication device 400 may also include a memory 420. From the memory 420, the processor 410 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 420 may be a separate device from the processor 410, or may be integrated into the processor 410.

Optionally, as shown in fig. 6, the communication device 400 may further include a transceiver 430, and the processor 410 may control the transceiver 430 to communicate with other devices, and in particular, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 430 may include a transmitter and a receiver, among others. The transceiver 430 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 400 may specifically be a network device in the embodiment of the present application, and the communication device 400 may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the communication device 400 may specifically be a terminal device in the embodiment of the present application, and the communication device 400 may implement a corresponding process implemented by the terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Fig. 7 is a schematic configuration diagram of an apparatus of an embodiment of the present application. The apparatus 500 shown in fig. 7 includes a processor 510, and the processor 510 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 7, the apparatus 500 may further include a memory 520. From the memory 520, the processor 510 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 520 may be a separate device from the processor 510, or may be integrated into the processor 510.

Optionally, the apparatus 500 may further comprise an input interface 530. The processor 510 may control the input interface 530 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.

Optionally, the apparatus 500 may further comprise an output interface 540. The processor 510 may control the output interface 540 to communicate with other devices or chips, and may particularly output information or data to the other devices or chips.

Optionally, the apparatus may be applied to the network device in the embodiment of the present application, and the apparatus may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the apparatus may be applied to the terminal device in the embodiment of the present application, and the apparatus may implement the corresponding process implemented by the terminal device in each method in the embodiment of the present application, and for brevity, details are not described herein again.

Alternatively, the device mentioned in the embodiments of the present application may also be a chip. For example, it may be a system-on-chip, a system-on-chip or a system-on-chip, etc.

Fig. 8 is a schematic block diagram of a communication system 600 according to an embodiment of the present application. As shown in fig. 8, the communication system 600 includes a terminal device 610 and a network device 620.

The terminal device 610 may be configured to implement the corresponding function implemented by the terminal device in the foregoing method, and the network device 620 may be configured to implement the corresponding function implemented by the network device in the foregoing method, for brevity, which is not described herein again.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed 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 the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), enhanced Synchronous SDRAM (ESDRAM), synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), synchronous Link DRAM (SLDRAM), direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product, including computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.

Optionally, the computer program product may be applied to the terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the computer program may be applied to the terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the terminal device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Those of ordinary skill in the art will appreciate that the various illustrative elements 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 implementation. 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 can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. With respect to such understanding, the technical solutions of the present application, which are essential or part of the technical solutions contributing to the prior art, may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in 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 (RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of location registration, comprising:

the method comprises the steps that terminal equipment obtains a Tracking Area Code (TAC) list of a target cell;

and the terminal equipment determines whether to initiate a position registration process according to the TAC list of the target cell and the TAC list registered by the terminal equipment.
The method of claim 1, wherein the determining, by the terminal device, whether to initiate a location registration procedure according to the TAC list of the target cell and the TAC list registered by the terminal device, comprises:

under the condition that each TAC in the TAC list of the target cell does not belong to the TAC list registered by the terminal equipment, the terminal equipment determines to initiate a position registration process;

and under the condition that part or all TACs in the TAC list of the target cell belong to the TAC list registered by the terminal equipment, the terminal equipment determines not to initiate a position registration process.
The method of claim 1, wherein the determining, by the terminal device, whether to initiate a location registration procedure according to the TAC list of the target cell and the TAC list registered by the terminal device, comprises:

the terminal equipment determines to initiate a position registration process under the condition that an intersection exists between the TAC list of the target cell and the TAC list registered by the terminal equipment;

and under the condition that the intersection exists between the TAC list of the target cell and the TAC list registered by the terminal equipment, the terminal equipment determines not to initiate a position registration process.
The method of any one of claims 1 to 3, wherein the terminal device obtaining the TAC list of the target cell comprises:

and after the terminal equipment selects the target cell through a cell reselection process, the terminal equipment acquires a TAC list of the target cell by reading system information broadcast of the target cell.
The method of any of claims 1 to 4, further comprising:

and under the condition that the terminal equipment determines to initiate the position registration process, the terminal equipment initiates the position registration process to an access and mobility management function (AMF) entity.
The method according to any of claims 1 to 5, applied to a non-terrestrial communication network, NTN.
A terminal device, comprising:

the communication unit is used for acquiring a tracking area code TAC list of a target cell;

and the processing unit is used for determining whether to initiate a position registration process according to the TAC list of the target cell and the TAC list registered by the terminal equipment.
The terminal device of claim 7, wherein the processing unit is specifically configured to:

under the condition that each TAC in the TAC list of the target cell does not belong to the TAC list registered by the terminal equipment, the terminal equipment determines to initiate a position registration process;

and under the condition that part or all TACs in the TAC list of the target cell belong to the TAC list registered by the terminal equipment, the terminal equipment determines not to initiate a position registration process.
The terminal device of claim 7, wherein the processing unit is specifically configured to:

determining to initiate a position registration process under the condition that intersection does not exist between the TAC list of the target cell and the TAC list registered by the terminal equipment;

and determining not to initiate a position registration process under the condition that intersection exists between the TAC list of the target cell and the TAC list registered by the terminal equipment.
The terminal device according to any of claims 7 to 9, wherein the communication unit is specifically configured to:

and after the terminal equipment selects the target cell through a cell reselection process, acquiring a TAC list of the target cell by reading system information broadcast of the target cell.
The terminal device according to any of claims 7 to 10,

and under the condition that the terminal equipment determines to initiate the position registration process, the communication unit is also used for initiating the position registration process to an access and mobility management function (AMF) entity.
The terminal device according to any of claims 7 to 11, wherein the terminal device is applied to a non-terrestrial communication network, NTN.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 6.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 6.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 6.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 6.
A computer program, characterized in that the computer program causes a computer to execute the method according to any of claims 1-6.