WO2023102710A1

WO2023102710A1 - Communication method, terminal device, and network device

Info

Publication number: WO2023102710A1
Application number: PCT/CN2021/135959
Authority: WO
Inventors: 于新磊; 李海涛; 胡奕
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2023-06-15
Also published as: CN117957872A

Abstract

Provided in the present application are a communication method, a network device, and a terminal device, so as to solve the problem of a signaling overhead related to the reporting of position information of a terminal device being high. The method comprises: a terminal device sending first position information to a network device, wherein the first position information is determined according to measured position information and reference position information, and the value of the first position information is lower than the value of the measured position information. Compared with actually measured measurement position information of a terminal device, the value of first position information is lower. Therefore, the number of bits of the first position information may be less than the number of bits of the measured position information. A signaling, which carries the first position information, may occupy fewer bits, thereby reducing a signaling overhead.

Description

Communication method, terminal device and network device

technical field

The present application relates to the technical field of communication, and more specifically, to a communication method, network equipment and terminal equipment.

Background technique

In related technologies, a terminal device may measure its own location and report location information. The communication network can provide services for the terminal device according to the location information of the terminal device. For example, a non-terrestrial network (NTN) cell can construct a suitable cell global identification (CGI) according to the location information of the terminal device, and the core network can provide services for the terminal device according to the CGI.

The terminal device may report the location information of the terminal device through signaling. The signaling related to the reporting of terminal device location information will take up a lot of bits. If multiple terminal devices in the cell report location information periodically or frequently trigger location information reporting due to the high mobility of the terminal device itself, it will lead to a large signal. order overhead.

Contents of the invention

The present application provides a communication method, a network device, and a terminal device, so as to solve the problem of high signaling overhead related to reporting position information of the terminal device.

In a first aspect, a communication method is provided, including: a terminal device sends first location information to a network device, the first location information is determined according to measurement location information and reference location information, wherein the value of the first location information is less than the value of the measured location information.

In a second aspect, a communication method is provided, including: a network device receiving first location information sent by a terminal device, the first location information is determined according to measured location information and reference location information, wherein the first location information is The value is smaller than the value of the measured location information.

In a third method, a terminal device is provided, including: a first sending unit, configured to send first location information to a network device, the first location information is determined according to measured location information and reference location information, wherein the first A value of location information is smaller than a value of the measured location information.

In a fourth aspect, a network device is provided, including: a second receiving unit, configured to receive first location information sent by a terminal device, the first location information is determined according to measurement location information and reference location information, wherein the The value of the first location information is smaller than the value of the measured location information.

In a fifth aspect, a terminal device is provided, including a processor, a memory, and a communication interface, the memory is used to store one or more computer programs, and the processor is used to call the computer programs in the memory so that the terminal device Execute the method described in the first aspect.

In a sixth aspect, a network device is provided, including a processor, a memory, and a communication interface, the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory to make the network device Execute the method of the second aspect.

In a seventh aspect, an embodiment of the present application provides a communication system, where the system includes the above-mentioned terminal device and/or network device. In another possible design, the system may further include other devices that interact with the terminal or network device in the solutions provided by the embodiments of the present application.

In the eighth aspect, the embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and the computer program enables the terminal device to perform some or all of the steps in the method of the first aspect above .

In the ninth aspect, the embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and the computer program causes the network device to perform some or all of the steps in the method of the second aspect above .

In a tenth aspect, the embodiment of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to enable the terminal to execute the above-mentioned first Some or all of the steps in the method of one aspect. In some implementations, the computer program product can be a software installation package.

In an eleventh aspect, the embodiment of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a network device to execute Part or all of the steps in the method of the second aspect above. In some implementations, the computer program product can be a software installation package.

In a twelfth aspect, an embodiment of the present application provides a chip, the chip includes a memory and a processor, and the processor can call and run a computer program from the memory to implement the method described in the first aspect or the second aspect above some or all of the steps.

A thirteenth aspect provides a computer program product, including a program, the program causes a computer to execute the method described in the first aspect.

In a fourteenth aspect, a computer program product is provided, including a program, and the program causes a computer to execute the method described in the second aspect.

A fifteenth aspect provides a computer program, the computer program causes a computer to execute the method described in the first aspect.

A sixteenth aspect provides a computer program, the computer program causes a computer to execute the method described in the second aspect.

Compared with the measured location information actually measured by the terminal device, the value of the first location information is smaller. Therefore, the number of bits of the first location information may be less than the number of bits of the measurement location information. The signaling bearing the first location information may occupy fewer bits, thereby reducing signaling overhead.

Description of drawings

FIG. 1 is a schematic diagram of a wireless communication system applied in an embodiment of the present application.

Fig. 2 is a schematic diagram of a satellite network architecture.

Fig. 3 is a schematic diagram of another satellite network architecture.

Fig. 4 is a schematic diagram of another satellite network architecture.

FIG. 5 is a schematic flowchart of a communication method provided by an embodiment of the present application.

FIG. 6 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.

FIG. 7 is a schematic structural diagram of a network device provided by an embodiment of the present application.

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

Detailed ways

The technical solution in this application will be described below with reference to the accompanying drawings.

Communication Systems

FIG. 1 is a wireless communication system 100 applied in an embodiment of the present application. The wireless communication system 100 may include a network device 110 and a terminal device 120 . The network device 110 may be a device that communicates with the terminal device 120 . The network device 110 can provide communication coverage for a specific geographical area, and can communicate with the terminal device 120 located in the coverage area.

Figure 1 exemplarily shows one network device and two terminals. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. The embodiment does not limit this.

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

It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, for example: the fifth generation (5th generation, 5G) system or new radio (new radio, NR), long term evolution (long term evolution, LTE) system , LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, and satellite communication systems, and so on.

The terminal equipment in the embodiment of the present application may also be called user equipment (user equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station (mobile station, MS), mobile terminal (mobile terminal, MT) ), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in the embodiment of the present application may be a device that provides voice and/or data connectivity to users, and can be used to connect people, objects and machines, such as handheld devices with wireless connection functions, vehicle-mounted devices, and the like. The terminal device in the embodiment of the present application can be mobile phone (mobile phone), tablet computer (Pad), notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) equipment, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart Wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, etc. Optionally, UE can be used to act as a base station. For example, a UE may act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc. For example, a cell phone and an automobile communicate with each other using sidelink signals. Communication between cellular phones and smart home devices without relaying communication signals through base stations.

The network device in this embodiment of the present application may be a device for communicating with a terminal device, and the network device may also be called an access network device or a wireless access network device, for example, the network device may be a base station. The network device in this embodiment of the present application may refer to a radio access network (radio access network, RAN) node (or device) that connects a terminal device to a wireless network. The base station can broadly cover various names in the following, or replace with the following names, such as: Node B (NodeB), evolved base station (evolved NodeB, eNB), next generation base station (next generation NodeB, gNB), relay station, Access point, transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), primary station MeNB, secondary station SeNB, multi-standard wireless (MSR) node, home base station, network controller, access node , wireless node, access point (access point, AP), transmission node, transceiver node, base band unit (base band unit, BBU), remote radio unit (Remote Radio Unit, RRU), active antenna unit (active antenna unit) , AAU), radio head (remote radio head, RRH), central unit (central unit, CU), distributed unit (distributed unit, DU), positioning nodes, etc. A base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. A base station may also refer to a communication module, modem or chip used to be set in the aforementioned equipment or device. The base station can also be a mobile switching center, a device that undertakes the function of a base station in D2D, vehicle-to-everything (V2X), machine-to-machine (M2M) communication, and a device in a 6G network. Network-side equipment, equipment that assumes base station functions in future communication systems, etc. Base stations can support networks of the same or different access technologies. The embodiment of the present application does not limit the specific technology and specific device form adopted by the network device.

Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, a helicopter or drone may be configured to serve as a device in communication with another base station.

In some deployments, the network device in this embodiment of the present application may refer to a CU or a DU, or, the network device includes a CU and a DU. A gNB may also include an AAU.

It should be understood that all or part of the functions of the communication device in this application may also be realized by software functions running on hardware, or by virtualization functions instantiated on a platform (such as a cloud platform).

Network equipment and terminal equipment can be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites in the air. In the embodiment of the present application, the scenarios where the network device and the terminal device are located are not limited.

NTN

NTN uses non-terrestrial (such as satellite) methods to provide communication services to users.

For terrestrial network communications, in scenarios such as oceans, mountains, and deserts, terrestrial communications cannot be equipped with communication equipment. Alternatively, terrestrial communications typically do not cover sparsely populated areas due to the cost of building and operating communications equipment. Compared with ground network communication, NTN has many advantages. First of all, NTN communication can not be restricted by the user's region. As for the NTN communication network, it will not be restricted by the region. In theory, satellites can orbit the earth, so every corner of the earth can be covered by satellite communications. Moreover, the area covered by NTN communication equipment is much larger than the area covered by terrestrial communication equipment. For example, in satellite communications, a single satellite can cover a large ground area. Secondly, NTN communication has great social value. NTN communication can achieve coverage at a lower cost, for example, it can cover remote mountainous areas or poor and backward countries or regions through satellite communication at a lower cost. This will enable people in these regions to enjoy advanced voice communication and mobile Internet technologies, which will help narrow the digital gap with developed regions and promote the development of these regions. Again, the communication distance of NTN communication is long, and the cost of communication is not significantly increased. In addition, the stability of NTN communication is high. For example, NTN communication can not be limited by natural conditions, and can be used even in the case of natural disasters.

Communications satellite

According to different orbit heights, communication satellites can be divided into low-earth orbit (LEO) satellites, medium-earth orbit (MEO) satellites, geosynchronous earth orbit (GEO) satellites, high Elliptical orbit (high elliptical orbit, HEO) satellites, etc. The following describes LEO satellites and GEO satellites in detail.

The orbital altitude of LEO satellites ranges from 500km to 1500km. The orbital period is about 1.5 hours to 2 hours. The signal propagation delay of single-hop communication between users is generally less than 20ms. The maximum satellite visible time is 20 minutes. The signal propagation distance is short, the link loss is small, and the requirements for the transmission power of the user terminal are not high.

The orbit height of GEO satellite is 35786km. GEO satellites orbit the Earth every 24 hours. The signal propagation delay of single-hop communication between users is generally 250ms.

In order to ensure satellite coverage and improve the system capacity of the entire satellite communication system, satellites can use multiple beams to cover the ground. For example, a satellite can form dozens or even hundreds of beams to cover the ground. Among them, a satellite beam can cover a ground area with a diameter of tens to hundreds of kilometers.

Satellite Network Architecture

The NTN network can be realized based on the satellite network architecture. The satellite network architecture may include the following network elements: gateways, feeder links, service links, satellites, and inter-satellite links.

The number of gateways can be one or more. Gateways can be used to connect satellite and terrestrial public networks. Gateways are usually located at ground level.

The feeder link may be the communication link between the gateway and the satellite.

The service link may be a link for communication between the terminal device and the satellite.

Satellites can be divided into transparent payload satellites and regenerative payload satellites based on the functions they provide.

Inter-satellite links can exist under the regenerative and forwarding network architecture.

FIG. 2 is a schematic diagram of a network architecture based on transparent forwarding satellites. Transparent forwarding satellites can provide radio frequency filtering, frequency conversion and amplification functions. The transparent forwarding satellite only provides transparent forwarding of signals, and will not change the waveform signal it forwards.

FIG. 3 is a schematic diagram of a network architecture based on regenerative and forwarding satellites. Regenerative repeater satellites can provide radio frequency filtering, frequency conversion and amplification functions. Regenerative repeater satellites may also provide at least one of demodulation/decoding, routing/conversion, and encoding/modulation. It can be understood that the regenerative-retransmitting satellite may have part or all of the functions of the base station. Wherein, the wireless link between the satellite and the gateway is a feeder link.

Take, for example, the architecture discussed in the 3rd generation partnership project (3GPP). For the regenerative and forwarding satellite network architecture, according to the different functions carried on the satellite, it can be divided into gNB-based bearer, gNB-distributed unit (gNB-DU)-based bearer or similar access and backhaul (integrated access) and backhaul like, IAB-like) bearer architecture. Fig. 3 is a schematic diagram of a regenerative and forwarding satellite network architecture based on gNB bearer. Fig. 4 is a schematic diagram of a regenerative and forwarding satellite network structure based on gNB-DU bearer.

Terminal device location reporting

With the development of technology, the terminal device can report the location information of the terminal device to solve some problems in the communication network, such as meeting the requirements of the core network. For example, after the initial access, the terminal device may send a radio resource control (radio resource control, RRC) connection establishment completion message, that is, a message 5 (message5, Msg5) to the network device. Msg5 will carry the first non-access stratum (non-access stratum, NAS) message of the terminal device. The network device will forward the NAS message of the terminal device in Msg5 to the core network, and attach an identifier such as CGI. The core network can provide services for terminal devices according to CGI. CGI not only exists in Msg5, but also needs to provide CGI information to the core network when the terminal device enters the connected state. CGI may include a cell ID. In terrestrial communication networks, the size (granularity) of the geographical area represented by the CGI may be the size of a terrestrial cell (typical radius of about 2 kilometers). Due to the large coverage of satellite beams, NTN cells can provide coverage far beyond that of terrestrial cells. For example, for cells of LEO satellites, the typical coverage range can be up to 100 to 1000 kilometers. Therefore, for NTN cells, if the CGI still uses the cell ID, the geographical area identified by the CGI will be greatly expanded. The larger the geographic area marked by a CGI, the less accurate the CGI information is, which creates many problems. For example, when a cell covers a country border area, if a terminal device initiates an emergency call service, it is difficult for the communication network to register the terminal device with the core network of the correct country to provide compliant services.

Taking the NTN system as an example, the network equipment can construct a CGI based on the location information reported by the terminal equipment, and the size of the geographical area corresponding to the CGI can be equivalent to the size of a terrestrial network cell (with a radius of 2 kilometers or more).

In addition, for the NTN system, in the connected state, by reporting the location information of the terminal device, the terminal device can provide the network with the service connection timing advance (service link timing advance, service link TA) of the terminal device, and assist the network to perform k-biasing for the terminal device. Shift (k offset) configuration, so as to achieve the purpose of enhancing the timing of NTN scheduling.

The terminal device can measure its own position to obtain position information, for example, obtain the position information of the terminal device through a global navigation satellite system (global navigation satellite system, GNSS) capability.

As an implementation manner, RAN2 introduces RRC signaling to perform initial access and report the location of the terminal equipment in the connected state.

For the position reporting of the terminal device during the initial access (that is, before the activation of the access stratum (access stratum, AS) security connection), it is considered in the related art that the terminal device can complete the RRC setting/RRC recovery completion (RRCSetupComplete/RRCResumeComplete) in Msg5 The message reports the rough location information of the terminal device (coarse location information). The granularity of the rough location information may not be indicated to the terminal device through a system message. From RAN2 perspective, there is no need for enhanced schemes to verify coarse location information. As an implementation, the 24-bit GNSS latitude and longitude coordinates can be truncated to the high X bits satisfying the accuracy of about 2 kilometers (X can be an integer greater than 0) to obtain rough location information.

For the position reporting of the terminal device in the connection state (that is, after the AS security connection is established), in related technologies, if the network device has the user permission to obtain the location of the terminal device, it can support finer location information in the connection state (finer location information) or complete GNSS Coordinates report. The network device can obtain the location information of the terminal device through signaling. For example, the network device may configure a report configuration (reportConfig) information element (information element, IE) to include a common location information (includeCommonLocationInfo) field, so as to configure the terminal device to report location information. In one implementation, the method of reporting the location of the terminal device in the connected state can support event triggering and periodic reporting, and does not support aperiodic methods of reporting the location of the terminal device (such as scheduling based on downlink control information (DCI). Periodic reporting method).

As an implementation manner, the terminal device may report the location information of the terminal device through RRC signaling. For example, after the terminal device measures the location information of the terminal device, it can report the location information of the terminal device (such as the location information defined in TS 23.032[15]) through the RRC IE EllipsoidPointWithAltitude. An example structure of EllipsoidPointWithAltitude is shown below.

It can be seen from the structure of EllipsoidPointWithAltitude that the field (field) of EllipsoidPointWithAltitude can be used to indicate the coordinate information measured by the terminal device. Wherein, the field degreesLatitude is 23 bits, the field degreesLongitude is 24 bits, and the field altitude is 15 bits.

It can be seen from the above signaling that if multiple terminal devices in the cell report location information periodically or frequently trigger location reporting due to the high mobility of the terminal devices themselves, the signaling related to terminal location reporting will occupy a large number of bits, resulting in relatively large Large signaling overhead. In particular, since the NTN cell has the characteristics of a large coverage area and a large number of terminal devices in a single cell, the above problems are more serious for the NTN cell.

The present application proposes a communication method to solve the above problems. FIG. 5 is a schematic flowchart of a communication method provided by an embodiment of the present application. The method shown in FIG. 5 can be executed by a terminal device and a network device. The method shown in FIG. 5 may include step S510.

Step S510, the terminal device sends the first location information to the network device.

The first location information can be obtained by measuring the location information. The measured location information may be location information obtained by the terminal device through measurement. For example, the terminal device may obtain measured location information (for example, 24-bit location coordinates) through GNSS measurement configured on the terminal device. It can be understood that the measured location information may be complete location information obtained through measurement of the terminal device. In some embodiments, the measured location information may also be referred to as absolute location information, location information of the terminal device or actual location information.

The value of the first location information is smaller than the value of the measurement location information. It can be understood that, compared with the measurement location information, the value of the first location information is smaller, and the number of bits of the first location information may be less than the number of bits of the measurement location information. The number of bits of the signaling for reporting the first location information may be smaller than the number of bits for reporting the measurement location information. Therefore, reporting the first location information can reduce the signaling overhead of reporting the location information of the terminal device. For example, the RRC IE EllipsoidPointWithAltitude described above includes measurement location information. If the first location information is reported through RRC signaling, the value range of the field in the corresponding RRC IE may be smaller than the value range of the field of EllipsoidPointWithAltitude, thereby reducing the number of bits of RRC signaling for terminal device location reporting. When the serving cell of the terminal device is an NTN cell, since the NTN cell has a large coverage area and serves many terminal devices, the method provided in this application can largely alleviate the problem of high signaling overhead caused by the location reporting of the terminal device.

It can be understood that, in the case of the same number of bits, the smaller the value, the higher the precision that can be represented. Therefore, the value of the first location information is small, and a more precise granularity of location information representation can also be realized.

This application does not limit the manner of obtaining the first location information. As an implementation manner, the first location information may be obtained by processing the measured location information with reference to the location information, that is, the first location information may be obtained according to the reference location information and the measured location information. The reference location information may be location information known or acquired by both the terminal device and the network device. The terminal device can calculate the first location information by combining the known reference location information with the measured location information, and the network device can also restore the measured location information of the terminal device according to the first location information and the known reference location information.

The present application does not limit the specific manner of acquiring the first location information by measuring the location information and referring to the location information. As an implementation manner, the first location information may be obtained by means of difference. For example, first location information=measurement location information−reference location information. Taking the measurement location information as an example, coordinates of the first location=coordinates of the measurement location−coordinates of the reference location.

This application does not limit the manner in which terminal devices and network devices acquire reference location information. As an implementation manner, the terminal device may send the reference location information to the network device, so that all network devices know the content of the reference location information. Alternatively, the network device may send the reference location information to the terminal device, so that the terminal device knows the content of the reference location information. Alternatively, the terminal device and/or the network device may obtain the reference location information through calculation based on the obtained information.

As an embodiment, the method shown in FIG. 5 may further include step S505.

S505. The network device may send the first message to the terminal device. The first message may be used by the terminal device to determine reference location information. It can be understood that the first messages sent by the network device to different terminal devices may be the same, that is, different terminal devices in the same cell may use the same reference location information to determine the first location information. According to the same reference position information and the first position information reported by different terminal devices, the network device can quickly restore the measured position information of each terminal device, thereby reducing the calculation amount of the network device.

The present application does not limit the manner in which the network device sends the reference location information. For example, a system message may be sent by broadcasting or signaling (for example, RRC signaling), and the system message may include reference location information. It can be understood that it is simpler to implement by broadcasting the reference position information.

This application does not limit the specific content of the reference location information. For example, the reference location information may be location information of a reference point. The reference point may be at least one of a cell ground reference point, a sub-satellite point, or a historical location of the terminal device. Different types of reference location information will be described separately below.

As an embodiment, the reference position information may be position information of a ground reference point of a cell. The cell ground reference point may be, for example, a cell center point. The ground reference point of the cell may be static and unchanged, for example, it is always the center point of the cell. Alternatively, the cell ground reference point may be a dynamically changing location point.

As another embodiment, the reference position information may be the position information of the reference point included in the existing system message. For example, the existing system message may be satellite ephemeris information broadcast by the network device, and the reference point may be a sub-satellite point obtained from the satellite ephemeris information. The sub-satellite point is the intersection of the line connecting the center of the earth and the satellite on the surface of the earth. The sub-satellite point can be obtained through the satellite ephemeris information of the serving cell of the terminal device. It can be understood that, using the location information of the reference point in the existing system message as the reference location information can reduce message interaction between the network device and the terminal device for transmitting the reference location information, thereby reducing signaling overhead.

It can be understood that the network device may send the information of the ground reference point of the cell and/or the satellite ephemeris information to the terminal device through the first message. It can be understood that the information of the ground reference point of the cell and the satellite ephemeris information may be sent through the same first message, or may be sent through different first messages, which is not limited in this application. As an embodiment, the first message may include the information of the ground reference point of the cell, and the terminal device and/or the network device may determine the location information of the ground reference point of the cell as the reference location information. As another embodiment, the first message may include satellite ephemeris information, and the terminal device and/or network device determines the sub-satellite point according to the satellite ephemeris information, and determines the position information of the sub-satellite point as the reference position information. As yet another embodiment, if the network device transmits the cell ground reference point information to the terminal device, the terminal device and/or the network device may determine the location information of the cell ground reference point as reference position information; if the network device does not transmit the cell ground reference point information point information, the terminal device and/or network device can determine the location information of the sub-satellite point as the reference location information.

As another embodiment, the reference location information may be second location information reported by the terminal device before reporting the first location information. It can be understood that the second location information may be any historical location information reported by the terminal device, for example, it may be the last reported location information reported in the first location information, or the last reported location information.

The application does not limit the type of the second location information. For example, the second location information may be a kind of first location information, that is, the second location information may be relative location information. Alternatively, the second location information may be measurement location information. As an embodiment, the second location information may be rough location information, fine location information or a complete GNSS coordinate report previously reported by the terminal device.

The terminal device may send the first location information to the network device through RRC signaling. A new first IE may be added in the RRC signaling to carry the first location information. It can be understood that the number of bits of the first IE may be smaller than the number of bits of an IE (for example, EllipsoidPointWithAltitude) used to report the location of the terminal device in the related art.

Optionally, if the first location information is outside the first range, the terminal device may send the measured location information to the network device. The present application does not limit the size of the first range, for example, the first range may be the range of the first IE. It can be understood that, when the first location information cannot be reported, the measured location information may be reported so that the network device acquires the location of the terminal device. For example, when the value of the first location information is outside the value range of the first IE and the first IE cannot bear the first location information, the measurement location information may be reported through the method for reporting the location information of the terminal device in the related art.

After the network device receives the first location information reported by the terminal device, further operations may be implemented based on the first location information. As an implementation manner, the network device may construct a CGI according to the first location information for use by the core network. For example, the serving cell of the terminal device is an NTN cell, and the network device may construct a CGI equivalent to the cell size (for example, 2 kilometers) of the terrestrial network according to the first location information, and provide the constructed CGI to the core network. As another implementation manner, the network device may configure terminal device-specific k offsets for the terminal device according to the first location information.

The method embodiment of the present application is described in detail above with reference to FIG. 5 , and the device embodiment of the present application is described in detail below in conjunction with FIGS. 6 to 8 . It should be understood that the descriptions of the method embodiments correspond to the descriptions of the device embodiments, therefore, for parts not described in detail, reference may be made to the foregoing method embodiments.

FIG. 6 is a schematic structural diagram of a terminal device 600 provided in an embodiment of the present application. The terminal device 600 shown in FIG. 6 may include a first sending unit 610 .

The first sending unit 610 may be configured to send the first location information to the network device, the first location information is determined according to the measured location information and the reference location information, wherein the value of the first location information is smaller than the value of the measured location information value.

Optionally, the serving cell of the terminal device is a non-terrestrial communication NTN cell.

Optionally, the terminal device 600 may further include a first receiving unit 605 .

The first receiving unit 605 may be configured to receive a first message sent by the network device, where the first message is used to determine the reference location information.

Optionally, the first message includes information about the ground reference point of the cell.

Optionally, the terminal device may further include: a first determining unit, configured to determine the location information of the ground reference point of the cell as the reference location information.

Optionally, the first message includes satellite ephemeris information.

Optionally, the terminal device may further include: a second determining unit, configured to determine a sub-satellite point according to the satellite ephemeris information, and determine position information of the sub-satellite point as the reference position information.

Optionally, the terminal device may further include: a second sending unit, configured to send second location information to the network device; a third determining unit, configured to determine that the second location information is the reference location information .

Optionally, the second location information includes rough location information or fine location information of the terminal device.

Optionally, the terminal device further includes: a third sending unit, configured to send the measured location information to the network device if the value of the first location information is outside the first range .

Optionally, the measured position information is obtained through GNSS of the terminal device.

Optionally, the first location information is sent through RRC signaling.

Optionally, the number of bits of the first location information is smaller than the number of bits of the measured location information.

Optionally, the first message is sent by broadcasting.

Optionally, the first message is sent through RRC signaling.

FIG. 7 is a schematic structural diagram of a network device 700 provided in an embodiment of the present application. The network device 700 may include a second receiving unit 710 .

The second receiving unit 710 may be configured to receive the first location information sent by the terminal device, the first location information is determined according to the measured location information and the reference location information, wherein the value of the first location information is smaller than the measured location information value.

Optionally, the serving cell of the terminal device is an NTN cell.

Optionally, the network device further includes a fourth sending unit 705 .

The fourth sending unit 705 may be configured to send a first message to the terminal device, where the first message is used to determine the reference location information.

Optionally, the network device 700 may further include: a fourth determining unit, configured to determine the location information of the ground reference point of the cell as the reference location information.

Optionally, the first message includes satellite ephemeris information.

Optionally, the network device 700 may further include: a fifth determining unit, configured to determine a sub-satellite point according to the satellite ephemeris information, and determine position information of the sub-satellite point as the reference position information.

Optionally, the network device 700 may further include: a third receiving unit, configured to receive the second location information sent by the terminal device; a sixth determining unit, configured to determine that the second location information is the reference location information.

Optionally, the network device 700 may further include: a fourth receiving unit, configured to receive the information sent by the terminal device if the value of the first location information is outside the first range. Measure location information.

Optionally, the network device further includes: a construction unit, configured to construct a CGI by the network device according to the first location information; and/or a configuration unit, configured to construct a CGI on the network according to the first location information The device configures the k offset of the terminal device.

Optionally, the first location information is received through radio resource control RRC signaling.

Optionally, the first message is sent by broadcasting.

Optionally, the first message is sent through RRC signaling.

FIG. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application. The dashed line in Figure 8 indicates that the unit or module is optional. The apparatus 800 may be used to implement the methods described in the foregoing method embodiments. Apparatus 800 may be a chip, a terminal device or a network device.

Apparatus 800 may include one or more processors 810 . The processor 810 may support the device 800 to implement the methods described in the foregoing method embodiments. The processor 810 may be a general purpose processor or a special purpose processor. For example, the processor may be a central processing unit (central processing unit, CPU). Alternatively, the processor can also be other general-purpose processors, digital signal processors (digital signal processors, DSPs), application specific integrated circuits (application specific integrated circuits, ASICs), off-the-shelf programmable gate arrays (field programmable gate arrays, FPGAs) Or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

Apparatus 800 may also include one or more memories 820 . A program is stored in the memory 820, and the program can be executed by the processor 810, so that the processor 810 executes the methods described in the foregoing method embodiments. The memory 820 may be independent from the processor 810 or may be integrated in the processor 810 .

The apparatus 800 may also include a transceiver 830 . The processor 810 can communicate with other devices or chips through the transceiver 830 . For example, the processor 810 may send and receive data with other devices or chips through the transceiver 830 .

The embodiment of the present application also provides a computer-readable storage medium for storing programs. The computer-readable storage medium can be applied to the terminal or the network device provided in the embodiments of the present application, and the program enables the computer to execute the methods performed by the terminal or the network device in the various embodiments of the present application.

The embodiment of the present application also provides a computer program product. The computer program product includes programs. The computer program product can be applied to the terminal or the network device provided in the embodiments of the present application, and the program enables the computer to execute the methods performed by the terminal or the network device in the various embodiments of the present application.

The embodiment of the present application also provides a computer program. The computer program can be applied to the terminal or the network device provided in the embodiments of the present application, and the computer program enables the computer to execute the methods performed by the terminal or the network device in the various embodiments of the present application.

It should be understood that the terms "system" and "network" may be used interchangeably in this application. In addition, the terms used in the application are only used to explain the specific embodiments of the application, and are not intended to limit the application. The terms "first", "second", "third" and "fourth" in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present application, the "indication" mentioned may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.

In this embodiment of the application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B may also be determined according to A and/or other information.

In this embodiment of the application, the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is instructed, configures and is configured, etc. relation.

In this embodiment of the application, "predefined" or "preconfigured" can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices). The application does not limit its specific implementation. For example, pre-defined may refer to defined in the protocol.

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

The term "and/or" in the embodiment of the present application is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and/or B, which can mean: A exists alone, and A and B exist at the same time , there are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

In various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the execution order of each process should be determined by its functions and internal logic, rather than the implementation process of the embodiments of the present application. constitute any limitation.

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

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be read by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital versatile disc (digital video disc, DVD)) or a semiconductor medium (for example, a solid state disk (solid state disk, SSD) )wait.

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims

A communication method, characterized in that, comprising:

The terminal device sends first location information to the network device, where the first location information is determined according to measured location information and reference location information, where a value of the first location information is smaller than a value of the measured location information.
The method according to claim 1, characterized in that the serving cell of the terminal device is a non-terrestrial communication NTN cell.
The method according to claim 1 or 2, characterized in that the method further comprises:

The terminal device receives the first message sent by the network device, where the first message is used to determine the reference location information.
The method according to claim 3, wherein the first message includes the information of the ground reference point of the cell.
The method according to claim 4, characterized in that the method further comprises:

The terminal device determines the location information of the ground reference point of the cell as the reference location information.
The method according to any one of claims 3-5, wherein the first message includes satellite ephemeris information.
The method according to claim 6, further comprising:

The terminal device determines the sub-satellite point according to the satellite ephemeris information, and determines the position information of the sub-satellite point as the reference position information.
The method according to claim 1 or 2, wherein before the terminal device sends the first location information to the network device, the method further comprises:

The terminal device sends second location information to the network device;

The terminal device determines that the second location information is the reference location information.
The method according to claim 8, wherein the second location information includes rough location information or fine location information of the terminal device.
The method according to any one of claims 1-9, wherein if the value of the first location information is outside the first range, the method further comprises:

The terminal device sends the measured location information to the network device.
The method according to any one of claims 1-10, characterized in that the measured position information is obtained through a Global Navigation Satellite System (GNSS) of the terminal device.
The method according to any one of claims 1-11, characterized in that the first location information is sent through Radio Resource Control (RRC) signaling.
The method according to any one of claims 1-12, characterized in that the number of bits of the first location information is smaller than the number of bits of the measured location information.
The method according to any one of claims 3-7, wherein the first message is sent by broadcasting.
The method according to any one of claims 3-7, wherein the first message is sent through RRC signaling.
A communication method, characterized in that, comprising:

The network device receives first location information sent by the terminal device, where the first location information is determined according to measured location information and reference location information, where a value of the first location information is smaller than a value of the measured location information.
The method according to claim 16, characterized in that the serving cell of the terminal device is a non-terrestrial communication NTN cell.
The method according to claim 16 or 17, wherein the method further comprises:

The first message sent by the network device to the terminal device, where the first message is used to determine the reference location information.
The method according to claim 18, wherein the first message includes the information of the ground reference point of the cell.
The method according to claim 19, further comprising:

The network device determines the location information of the ground reference point of the cell as the reference location information.
The method according to any one of claims 18-20, wherein the first message includes satellite ephemeris information.
The method according to claim 21, further comprising:

The network device determines the sub-satellite point according to the satellite ephemeris information, and determines the position information of the sub-satellite point as the reference position information.
The method according to claim 16 or 17, wherein before the terminal device sends the first location information to the network device, the method further comprises:

The network device receives the second location information sent by the terminal device;

The network device determines that the second location information is the reference location information.
The method according to claim 23, wherein the second location information includes rough location information or fine location information of the terminal device.
The method according to any one of claims 16-24, wherein if the value of the first location information is outside the first range, the method further comprises:

The network device receives the measured location information sent by the terminal device.
The method according to any one of claims 16-25, wherein the method further comprises:

According to the first location information, the network device constructs a cell global identity CGI; and/or

According to the first location information, the network device configures the k-offset of the terminal device.
The method according to any one of claims 16 to 26, characterized in that the measured position information is obtained through a Global Navigation Satellite System (GNSS) of the terminal device.
The method according to any one of claims 16-27, wherein the first location information is received through Radio Resource Control (RRC) signaling.
The method according to any one of claims 16-28, characterized in that the number of bits of the first location information is smaller than the number of bits of the measured location information.
The method according to any one of claims 18-22, wherein the first message is sent by broadcasting.
The method according to any one of claims 18-22, wherein the first message is sent through RRC signaling.
A terminal device, characterized in that it includes:

A first sending unit, configured to send first location information to a network device, the first location information is determined according to measured location information and reference location information, wherein a value of the first location information is smaller than a value of the measured location information .
The terminal device according to claim 32, wherein the serving cell of the terminal device is a non-terrestrial communication NTN cell.
The terminal device according to claim 32 or 33, wherein the terminal device further comprises:

A first receiving unit, configured to receive a first message sent by the network device, where the first message is used to determine the reference location information.
The terminal device according to claim 34, wherein the first message includes the information of the ground reference point of the cell.
The terminal device according to claim 35, wherein the terminal device further comprises:

The first determining unit is configured to determine the location information of the ground reference point of the cell as the reference location information.
The terminal device according to any one of claims 34-36, wherein the first message includes satellite ephemeris information.
The terminal device according to claim 37, wherein the terminal device further comprises:

The second determining unit is configured to determine the sub-satellite point according to the satellite ephemeris information, and determine the position information of the sub-satellite point as the reference position information.
The terminal device according to claim 32 or 33, wherein the terminal device further comprises:

a second sending unit, configured to send second location information to the network device;

A third determining unit, configured to determine the second location information as the reference location information.
The terminal device according to claim 39, wherein the second location information includes rough location information or fine location information of the terminal device.
The terminal device according to any one of claims 32-40, wherein the terminal device further comprises:

A third sending unit, if the value of the first location information is outside the first range, the third sending unit is configured to send the measured location information to the network device.
The terminal device according to any one of claims 32-41, wherein the measured position information is obtained through a Global Navigation Satellite System (GNSS) of the terminal device.
The terminal device according to any one of claims 32-42, wherein the first location information is sent through radio resource control (RRC) signaling.
The terminal device according to any one of claims 32 to 43, wherein the number of bits of the first location information is smaller than the number of bits of the measured location information.
The terminal device according to any one of claims 34-38, wherein the first message is sent in a broadcast manner.
The terminal device according to any one of claims 34-38, wherein the first message is sent through RRC signaling.
A network device, characterized in that it includes:

The second receiving unit is configured to receive the first location information sent by the terminal device, the first location information is determined according to the measured location information and the reference location information, wherein the value of the first location information is smaller than that of the measured location information value.
The network device according to claim 47, wherein the serving cell of the terminal device is a non-terrestrial communication NTN cell.
The network device according to claim 47 or 48, wherein the network device further comprises:

The fourth sending unit is configured to send a first message to the terminal device, where the first message is used to determine the reference location information.
The network device according to claim 49, wherein the first message includes the information of the ground reference point of the cell.
The network device according to claim 50, wherein the network device further comprises:

The fourth determining unit is configured to determine the location information of the ground reference point of the cell as the reference location information.
The network device according to any one of claims 49-51, wherein the first message includes satellite ephemeris information.
The network device according to claim 52, wherein the network device further comprises:

The fifth determining unit is configured to determine the sub-satellite point according to the satellite ephemeris information, and determine the position information of the sub-satellite point as the reference position information.
The network device according to claim 47 or 48, wherein the network device further comprises:

a third receiving unit, configured to receive the second location information sent by the terminal device;

A sixth determining unit, configured to determine that the second location information is the reference location information.
The network device according to claim 54, wherein the second location information includes rough location information or fine location information of the terminal device.
The network device according to any one of claims 47-55, wherein the network device further comprises:

A fourth receiving unit, configured to receive the measured location information sent by the terminal device if the value of the first location information is outside the first range.
The network device according to any one of claims 47-56, wherein the network device further comprises:

A construction unit, configured to, according to the first location information, the network device construct a cell global identity CGI; and/or

A configuring unit, configured to configure, by the network device, the k offset of the terminal device according to the first location information.
The network device according to any one of claims 47-57, wherein the measured position information is obtained through a Global Navigation Satellite System (GNSS) of the terminal device.
The network device according to any one of claims 47-58, wherein the first location information is received through Radio Resource Control (RRC) signaling.
The network device according to any one of claims 47-59, wherein the number of bits of the first location information is smaller than the number of bits of the measured location information.
The network device according to any one of claims 49-53, wherein the first message is sent by broadcasting.
The network device according to any one of claims 49-53, wherein the first message is sent through RRC signaling.
A terminal, characterized by comprising a memory and a processor, the memory is used to store programs, and the processor is used to call the programs in the memory to execute the method described in any one of claims 1-15 method.
A network device, characterized by comprising a memory and a processor, the memory is used to store a program, and the processor is used to call the program in the memory to execute any one of claims 16-31 Methods.
An apparatus, characterized by comprising a processor, configured to call a program from a memory to execute the method according to any one of claims 1-15.
An apparatus, characterized by comprising a processor, configured to call a program from a memory to execute the method according to any one of claims 16-31.
A chip, characterized by comprising a processor, configured to call a program from a memory, so that a device installed with the chip executes the method according to any one of claims 1-15.
A chip, characterized by comprising a processor, configured to call a program from a memory, so that a device installed with the chip executes the method according to any one of claims 16-31.
A computer-readable storage medium, characterized in that a program is stored thereon, the program causes a computer to execute the method according to any one of claims 1-15.
A computer-readable storage medium, characterized in that a program is stored thereon, and the program causes a computer to execute the method according to any one of claims 16-31.
A computer program product, characterized by comprising a program, the program causes a computer to execute the method according to any one of claims 1-15.
A computer program product, characterized by comprising a program, the program causes a computer to execute the method according to any one of claims 16-31.
A computer program, characterized in that the computer program causes a computer to execute the method according to any one of claims 1-15.
A computer program, characterized in that the computer program causes a computer to execute the method according to any one of claims 16-31.