WO2023011166A1

WO2023011166A1 - Information transmission method and communication apparatus

Info

Publication number: WO2023011166A1
Application number: PCT/CN2022/106495
Authority: WO
Inventors: 雷显调; 刘梦婷; 欧阳国威; 郭英昊; 李洪
Original assignee: 华为技术有限公司
Priority date: 2021-08-06
Filing date: 2022-07-19
Publication date: 2023-02-09
Also published as: CN115706917A

Abstract

The present application provides an information transmission method and a communications apparatus. The method comprises: a terminal device receives a first request message from a first network device, the first request message being used for requesting information about at least one positioning capability of the terminal device; the terminal device sends first indication information to the first network device, the first indication information comprising the information about at least one positioning capability indicated in the first request message and information about at least one positioning capability not indicated in the first request message; the first network device receives the first indication information from the terminal device, and sends the first indication information to a second network device; and the second network device receives and stores the first indication information. By means of the first indication information sent by the terminal device, the first network device can clearly know the information about the positioning capability of the terminal device, thereby facilitating reducing positioning delay and signaling overhead and improving service performance.

Description

Information transmission method and communication device

This application claims priority to a Chinese patent application filed with the State Intellectual Property Office of China on August 6, 2021, with application number 202110904531.3, and application title "Information Transmission Method and Communication Device", the entire contents of which are hereby incorporated by reference in this application middle.

technical field

The present application relates to the communication field, and in particular to an information transmission method and a communication device.

Background technique

In a wireless communication system, a network device needs to know information about a positioning capability of a terminal device, and judge which positioning capability to use for positioning according to the information about the positioning capability. In order to ensure that the network device can make a correct positioning decision, and then perform correct and efficient positioning, it is necessary to ensure the accuracy and completeness of the positioning capability information of the terminal device acquired by the network device.

Currently, a network device may request information about the positioning capability of a terminal device through a positioning capability request message. Based on the request message, the terminal device may report the positioning capability information supported by the terminal device to the network device. The network device can receive and store the positioning capability information supported by the terminal device. In this way, after the next positioning procedure is started, the network device can perform positioning directly based on information about the positioning capability supported by the terminal device.

However, the above method has the problem of inaccurate storage of information about the location capability of the terminal device, which may cause the network device to repeatedly request information about a certain location capability from the terminal device again, increasing signaling overhead. Or the network device misjudges that the terminal device cannot support the certain positioning capability, thereby affecting the performance of the positioning service.

Contents of the invention

The present application provides an information transmission method, which solves the problem of inaccurate storage of terminal equipment positioning capability information, helps reduce signaling overhead and positioning delay, and improves positioning service performance.

In a first aspect, an information transmission method is provided, including: a terminal device receiving a first request message from a first network device, where the first request message is used to request at least one location capability information of the terminal device; the terminal The device sends first indication information to the first network device, where the first indication information includes at least one positioning capability information indicated in the first request message and at least one positioning capability not indicated in the first request message Information.

In this embodiment of the present application, the terminal device may report first indication information to the first network device, where the first indication information includes at least one positioning capability information indicated in the above-mentioned first request message, and the information in the first request message Information about at least one positioning capability not indicated. The first network device receives the first indication information, and sends the first indication information to the second network device for storage. So that before the next positioning, the first network device can obtain the above-mentioned stored first indication information from the second network device, obtain at least one positioning capability information that it has requested based on the first positioning capability information, and the at least one positioning capability information. In the item of positioning capability information, the positioning capability information supported by the terminal device and the positioning capability information not supported by the terminal device are included. In this way, the problem of inaccurate storage of positioning capability information is solved, so that the first network device does not need to repeatedly request the positioning capability information of the terminal device it has already requested, and avoids misjudgment of certain positioning capability information as far as possible, and can Effectively reduce signaling overhead and positioning delay, and improve the performance of positioning services.

With reference to the first aspect, in some implementations of the first aspect, the at least one positioning capability information indicated in the first request message includes at least one of the following: at least one positioning capability indicated in the first request message Information about the positioning capability supported by the terminal device in the above information; information about the positioning capability not supported by the terminal device in the at least one positioning capability information indicated in the first request message.

With reference to the first aspect, in some implementations of the first aspect, the information about at least one positioning capability not indicated in the first request message includes at least one of the following: information about at least one positioning capability indicated in the history request message Information about the positioning capability supported by the terminal device in the information; information about the positioning capability not supported by the terminal device in the at least one positioning capability information indicated in the history request message.

With reference to the first aspect, in some implementation manners of the first aspect, the foregoing first indication information is sent in the form of a bitmap.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the terminal device receiving a second request message from the first network device, where the second request message is used to request the terminal device's Information of at least one positioning capability other than the above-mentioned first indication information

In this embodiment of the present application, the terminal device sends the first indication information so that the first network device learns at least one positioning capability information indicated in the first request message, and at least one positioning capability information not indicated in the first request message. Information about the item's targeting capabilities. The first network device can clearly know the positioning capability information of the terminal device, which solves the problem of inaccurate storage of the positioning capability information of the terminal device, thereby preventing the first network device from repeatedly requesting the above-mentioned first indication information through the above-mentioned second request message The location capability information included in the location capability, that is, the location capability information that the first network device has requested, reduces signaling overhead and reduces location delay.

With reference to the first aspect, in some implementation manners of the first aspect, the first request message includes fifth indication information, and the fifth indication information is used to instruct the terminal device to report at least the information indicated in the first request message. One item of positioning capability information, and at least one item of positioning capability information not indicated in the first request message.

In a second aspect, an information transmission method is provided, including: a first network device sends a first request message to a terminal device, where the first request message is used to request information about at least one positioning capability of the terminal device; the above first The network device receives first indication information from the terminal device, where the first indication information includes at least one positioning capability information indicated in the first request message and at least one positioning capability not indicated in the first request message information; the first network device sends the first indication information to the second network device.

In this embodiment of the present application, the terminal device sends the first indication information so that the first network device learns at least one positioning capability information indicated in the first request message, and at least one positioning capability information not indicated in the first request message. Information about the item's targeting capabilities. The first network device can clearly know the positioning capability information of the terminal device, which solves the problem of inaccurate storage of the positioning capability information of the terminal device, thereby preventing the first network device from repeatedly requesting the above-mentioned first indication information through the second request message. The included positioning capability information, that is, the positioning capability information requested by the first network device, reduces signaling overhead and reduces positioning delay.

With reference to the second aspect, in some implementations of the second aspect, the at least one positioning capability information indicated in the first request message includes at least one of the following: at least one positioning capability indicated in the first request message Information about the positioning capability supported by the terminal device in the above information; information about the positioning capability not supported by the terminal device in the at least one positioning capability information indicated in the first request message.

With reference to the second aspect, in some implementations of the second aspect, the information about at least one positioning capability not indicated in the first request message includes at least one of the following: at least one positioning capability not indicated in the history request message Information about the positioning capability supported by the terminal device in the above information; information about the positioning capability not supported by the terminal device in the information about at least one positioning capability not indicated in the history request message.

With reference to the second aspect, in some implementation manners of the second aspect, the foregoing first indication information is sent in the form of a bitmap.

With reference to the second aspect, in some implementation manners of the second aspect, the above-mentioned method further includes: the above-mentioned first network device receives a first message from the above-mentioned second network device, and the first message is used to send the above-mentioned first network device Requesting the location information of the terminal device, the first message includes the first indication information; the first network device sends a second request message to the terminal device, the second request message is used to request information other than the first indication information Information about at least one positioning capability of .

With reference to the second aspect, in some implementation manners of the second aspect, the first request message includes fifth indication information, and the fifth indication information is used to instruct the terminal device to report at least one of the information indicated in the first request message. Information about one item of positioning capability, and information about at least one item of positioning capability not indicated in the above-mentioned first request message.

In a third aspect, an information transmission method is provided, including: a first network device sends a first request message to a terminal device, where the first request message is used to request information about at least one positioning capability of the terminal device; the above-mentioned terminal The device receives the first request message from the first network device, and sends first indication information to the first network device, where the first indication information includes at least one positioning capability information indicated in the first request message, and at least one positioning capability information not indicated in the first request message; the first network device receives the first indication information from the terminal device; the first network device sends the second network device the First indication information: the second network device receives the first indication information from the first network device, and stores the first indication information.

With reference to the third aspect, in some implementations of the third aspect, the at least one positioning capability information indicated in the first request message includes at least one of the following: at least one positioning capability indicated in the first request message Information about the positioning capability supported by the terminal device in the above information; information about the positioning capability not supported by the terminal device in the at least one positioning capability information indicated in the first request message.

With reference to the third aspect, in some implementations of the third aspect, the information about at least one positioning capability not indicated in the first request message includes at least one of the following: at least one positioning capability not indicated in the history request message Information about the positioning capability supported by the above-mentioned terminal device in the information; information about the positioning capability not supported by the above-mentioned terminal device in the information about at least one positioning capability not indicated in the above-mentioned history message.

With reference to the third aspect, in some implementation manners of the third aspect, the foregoing first indication information is sent in the form of a bitmap.

With reference to the third aspect, in some implementation manners of the third aspect, the method further includes: the second network device sending a first message to the first network device, where the first message is used to request the first network device The location information of the above-mentioned terminal device, the first message includes the first indication information; the above-mentioned first network device receives the above-mentioned first message from the above-mentioned second network device, and sends a second request message to the above-mentioned terminal device, the first The second request message is used to request information about at least one positioning capability other than the first indication information of the terminal device; the terminal device receives the second request message from the first network device.

With reference to the third aspect, in some implementation manners of the third aspect, the first request message includes fifth indication information, and the fifth indication information is used to instruct the terminal device to report at least one of the information indicated in the first request message. Information about one item of positioning capability, and information about at least one item of positioning capability not indicated in the above-mentioned first request message.

In a fourth aspect, an information transmission method is provided, including: a terminal device receiving a third request message from a first network device, where the third request message is used to request information on all positioning capabilities of the terminal device; The first network device sends second indication information, where the second indication information includes information about all positioning capabilities indicated in the third request message.

In this embodiment of the present application, the first network device can obtain information about all positioning capabilities supported by the terminal device by sending a request message to the above-mentioned terminal device, and the second network device requests the first network device for the location of the above-mentioned terminal device information, the first network device can directly obtain all positioning capabilities supported by the terminal device based on the second indication information stored by the second network device, and can know the location of the terminal device based on information about all positioning capabilities supported by the terminal device. Information about all location capabilities not supported. Alternatively, the first network device may also directly obtain information about the positioning capability supported by the terminal device and information about all positioning capabilities not supported by the terminal device from the second indication information, which solves the problem of storing information about the positioning capability of the terminal device. The problem of inaccuracy makes it unnecessary for the first network device to request location capability information from the terminal device, which reduces signaling overhead, improves location efficiency, reduces location delay, and improves service performance.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the information on all positioning capabilities indicated in the third request message includes information on all positioning capabilities supported by the terminal device, and/or all positioning capabilities not supported by the terminal device Information about all location capabilities.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the above-mentioned second indication information is sent in the form of a bitmap.

With reference to the fourth aspect, in some implementations of the fourth aspect, the information about all the positioning capabilities of the terminal device includes at least one of the following: whether it supports the positioning capability information of the Long Term Evolution Positioning Protocol (LPP) segment, observed time difference of arrival (OTDOA) Positioning capability information, enhanced cell identity ECID positioning capability information, downlink time difference of arrival DL-TDOA positioning capability information, downlink angle of departure DL-AoD positioning capability information, uplink angle of arrival UL-AoA) positioning capability information, uplink Time difference of arrival UL-TDOA positioning capability information, and multiple round-trip time Multi-RTT positioning capability information; assisted global navigation satellite system A-GNSS positioning capability information, sensor positioning capability information, or ground beacon system TBS positioning capability Information.

In a fifth aspect, an information transmission method is provided, including: a first network device sending a third request message to a terminal device, where the third request message is used to request information on all positioning capabilities of the terminal device; the first network device receiving second indication information from the terminal device, where the second indication information includes information on all positioning capabilities indicated in the third request message; and sending the second indication information to the second network device by the first network device.

With reference to the fifth aspect, in some implementation manners of the fifth aspect, the information on all positioning capabilities indicated in the third request message includes information on all positioning capabilities supported by the terminal device, and/or all positioning capabilities not supported by the terminal device Information about all location capabilities.

With reference to the fifth aspect, in some implementation manners of the fifth aspect, the above-mentioned second indication information is sent in the form of a bitmap.

With reference to the fifth aspect, in some implementations of the fifth aspect, the information on all positioning capabilities of the terminal device includes at least one of the following: information on whether to support the positioning capability of the Long Term Evolution Positioning Protocol (LPP) segment, observed time difference of arrival (OTDOA) Positioning capability information, enhanced cell identification ECID positioning capability information, downlink time difference of arrival DL-TDOA positioning capability information, downlink angle of departure DL-AoD positioning capability information, uplink angle of arrival UL-AoA positioning capability information, uplink arrival Time difference UL-TDOA positioning capability information, multiple round-trip time Multi-RTT positioning capability information, assisted global navigation satellite system A-GNSS positioning capability information, sensor positioning capability information, or ground beacon system TBS positioning capability information .

According to a sixth aspect, an information transmission method is provided, including: a first network device sends a third request message to a terminal device, where the third request message is used to request information on all positioning capabilities of the terminal device; the terminal device receives information from a third request message from the first network device, and send second indication information to the first network device, where the second indication information includes information on all positioning capabilities indicated in the third request message; the first network device receiving the second indication information from the terminal device, and sending the second indication information to a second network device; the second network device receiving the second indication information from the first network device, and storing the second indication information.

With reference to the sixth aspect, in some implementations of the sixth aspect, it is characterized in that the information on all positioning capabilities indicated in the third request message includes information on all positioning capabilities supported by the terminal device, and/or the terminal device Information about all location capabilities not supported by the device.

With reference to the sixth aspect, in some implementation manners of the sixth aspect, the above-mentioned second indication information is sent in the form of a bitmap.

With reference to the sixth aspect, in some implementations of the sixth aspect, the information about all the positioning capabilities of the terminal device includes at least one of the following: information about whether it supports the positioning capability of the Long Term Evolution Positioning Protocol (LPP) segment, observed time difference of arrival (OTDOA) Positioning capability information, enhanced cell identification ECID positioning capability information, downlink time difference of arrival DL-TDOA positioning capability information, downlink angle of departure DL-AoD positioning capability information, uplink angle of arrival UL-AoA positioning capability information, uplink arrival Time difference UL-TDOA positioning capability information, multiple round-trip time Multi-RTT positioning capability information, assisted global navigation satellite system A-GNSS positioning capability information, sensor positioning capability information, or ground beacon system TBS positioning capability information .

In a seventh aspect, a communication device is provided, including: a receiving module and a sending module; wherein, the receiving module is configured to: receive a first request message from a first network device, and the first request message is used to request the above-mentioned terminal device Information about at least one positioning capability; the sending module is configured to: send first indication information to the above-mentioned first network device, where the first indication information includes at least one positioning capability information indicated in the above-mentioned first request message, and the above-mentioned first Information about at least one positioning capability not indicated in the request message.

With reference to the seventh aspect, in some implementation manners of the seventh aspect, the at least one positioning capability information indicated in the first request message includes at least one of the following: at least one positioning capability indicated in the first request message Information about the positioning capability supported by the terminal device in the above information; information about the positioning capability not supported by the terminal device in the at least one positioning capability information indicated in the first request message.

With reference to the seventh aspect, in some implementations of the seventh aspect, the information about at least one positioning capability not indicated in the first request message includes at least one of the following: information about at least one positioning capability indicated in the history request message Information about the positioning capability supported by the terminal device in the information; information about the positioning capability not supported by the terminal device in the at least one positioning capability information indicated in the history request message.

With reference to the seventh aspect, in some implementation manners of the seventh aspect, the above-mentioned first indication information is sent in the form of a bitmap.

With reference to the seventh aspect, in some implementation manners of the seventh aspect, the above-mentioned receiving module is configured to: receive a second request message from the above-mentioned first network device, where the second request message is used to request the first Information indicating at least one positioning capability other than the information.

With reference to the seventh aspect, in some implementation manners of the seventh aspect, the first request message includes fifth indication information, and the fifth indication information is used to instruct the terminal device to report at least one of the information indicated in the first request message. Information about one item of positioning capability, and information about at least one item of positioning capability not indicated in the above-mentioned first request message.

In an eighth aspect, a communication device is provided, including: a sending module and a receiving module; wherein the sending module is configured to: send a first request message to a terminal device, and the first request message is used to request at least one location of the terminal device Capability information; the receiving module is configured to: receive first indication information from the terminal device, where the first indication information includes at least one positioning capability information indicated in the first request message, and information not included in the first request message Indicated at least one positioning capability information; the sending module is configured to: send the first indication information to the second network device.

With reference to the eighth aspect, in some implementations of the eighth aspect, the at least one positioning capability information indicated in the first request message includes at least one of the following: at least one positioning capability indicated in the first request message Information about the positioning capability supported by the terminal device in the above information; information about the positioning capability not supported by the terminal device in the at least one positioning capability information indicated in the first request message.

With reference to the eighth aspect, in some implementations of the eighth aspect, the information on at least one positioning capability not indicated in the first request message includes at least one of the following: at least one positioning capability not indicated in the historical request message Information about the positioning capability supported by the terminal device in the information; information about the positioning capability not supported by the terminal device in the information about at least one positioning capability not indicated in the history request message.

With reference to the eighth aspect, in some implementation manners of the eighth aspect, the above-mentioned first indication information is sent in the form of a bitmap.

With reference to the eighth aspect, in some implementation manners of the eighth aspect, the above-mentioned apparatus further includes: a processing module configured to: receive a first message from the above-mentioned second network device, where the first message is used to send a message to the above-mentioned first network device Requesting the location information of the terminal device, the first message includes the first indication information; sending a second request message to the terminal device, the second request message is used to request at least one positioning capability other than the first indication information Information.

With reference to the eighth aspect, in some implementation manners of the eighth aspect, the first request message includes fifth indication information, and the fifth indication information is used to instruct the terminal device to report at least the information indicated in the first request message. One item of positioning capability information, and at least one item of positioning capability information not indicated in the first request message. The above-mentioned processing module is used to: request the location information of the above-mentioned terminal device, the first message includes the first indication information; send a second request message to the above-mentioned terminal device, and the second request message is used to request the location information of the above-mentioned first indication information Information about at least one other positioning capability.

With reference to the eighth aspect, in some implementation manners of the eighth aspect, the first request message includes fifth indication information, and the fifth indication information is used to instruct the terminal device to report at least the information indicated in the first request message. One item of positioning capability information, and at least one item of positioning capability information not indicated in the first request message.

In a ninth aspect, a communication device is provided, including: a receiving module and a sending module; wherein the receiving module is configured to: receive a third request message from the first network device, the third request message is used to request all Positioning capability information; the sending module is configured to: send second indication information to the first network device, where the second indication information includes all positioning capability information indicated in the third request message.

With reference to the ninth aspect, in some implementation manners of the ninth aspect, the information on all positioning capabilities indicated in the third request message includes information on all positioning capabilities supported by the terminal device, and/or all positioning capabilities not supported by the terminal device Information about all location capabilities.

With reference to the ninth aspect, in some implementation manners of the ninth aspect, the above-mentioned second indication information is sent in the form of a bitmap.

With reference to the ninth aspect, in some implementations of the ninth aspect, the information on all positioning capabilities of the terminal device includes at least one of the following: information on whether to support the positioning capability of the Long Term Evolution Positioning Protocol (LPP) segment, observed time difference of arrival (OTDOA) Positioning capability information, enhanced cell identity ECID positioning capability information, downlink time difference of arrival (DL-TDOA) positioning capability information, downlink angle of departure DL-AoD positioning capability information, uplink angle of arrival UL-AoA positioning capability information, uplink Time difference of arrival UL-TDOA positioning capability information, and multiple round-trip time Multi-RTT positioning capability information; assisted global navigation satellite system A-GNSS positioning capability information, sensor positioning capability information, or ground beacon system TBS positioning capability Information.

In a tenth aspect, a communication device is provided, including: a sending module and a receiving module; wherein the sending module is configured to: send a third request message to a terminal device, where the third request message is used to request all positioning capabilities of the terminal device information; the receiving module is used to: receive the second indication information from the above terminal device, the second indication information includes the information of all positioning capabilities indicated in the above third request message; the above sending module is used to: send to the second network device Send the second indication information.

With reference to the tenth aspect, in some implementation manners of the tenth aspect, the information on all positioning capabilities indicated in the third request message includes information on all positioning capabilities supported by the terminal device, and/or all positioning capabilities not supported by the terminal device Information about all location capabilities.

With reference to the tenth aspect, in some implementation manners of the tenth aspect, the above-mentioned second indication information is sent in the form of a bitmap.

With reference to the tenth aspect, in some implementations of the tenth aspect, the above information about all the positioning capabilities of the terminal device includes at least one of the following: information about whether to support the positioning capability of the Long Term Evolution Positioning Protocol (LPP) segment, observed time difference of arrival (OTDOA) Positioning capability information, enhanced cell identification ECID positioning capability information, downlink time difference of arrival DL-TDOA positioning capability information, downlink angle of departure DL-AoD positioning capability information, uplink angle of arrival UL-AoA positioning capability information, uplink arrival Time difference UL-TDOA positioning capability information, multiple round-trip time Multi-RTT positioning capability information, assisted global navigation satellite system A-GNSS positioning capability information, sensor positioning capability information, or ground beacon system TBS positioning capability information .

In an eleventh aspect, an information transmission system is provided, and the system includes: a terminal device, a first network device, and a second network device. Wherein, the terminal device is configured to execute the method corresponding to the terminal device in any possible implementation manner of the above third aspect or the sixth aspect, and the first network device is configured to execute any of the above third aspect or the sixth aspect The method corresponding to the first network device in one possible implementation manner, the second network device is configured to execute the method corresponding to the second network device in any possible implementation manner of the third aspect or the sixth aspect.

In a twelfth aspect, another communication device is provided, including a processor, the processor is coupled with a memory, and can be used to execute instructions in the memory, so as to implement the first aspect, the second aspect, the fourth aspect or the fifth aspect. A method in any of the possible implementations of . Optionally, the terminal device further includes a memory. Optionally, the terminal device further includes a communication interface, and the processor is coupled to the communication interface.

In a thirteenth aspect, a processor is provided, including: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method in any possible implementation manner of the first aspect, the second aspect, the fourth aspect, or the fifth aspect.

In a specific implementation process, the above-mentioned processor can be a chip, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a flip-flop, and various logic circuits. The input signal received by the input circuit may be received and input by, for example but not limited to, the receiver, the output signal of the output circuit may be, for example but not limited to, output to the transmitter and transmitted by the transmitter, and the input circuit and the output The circuit may be the same circuit, which is used as an input circuit and an output circuit respectively at different times. The embodiment of the present application does not limit the specific implementation manners of the processor and various circuits.

In a fourteenth aspect, a processing device is provided, including a processor and a memory. The processor is used to read instructions stored in the memory, and can receive signals through the receiver and transmit signals through the transmitter, so as to implement any possible implementation of the first aspect, the second aspect, the fourth aspect or the fifth aspect. methods in methods.

Optionally, there are one or more processors, and one or more memories.

Optionally, the memory may be integrated with the processor, or the memory may be separated from the processor.

In the specific implementation process, the memory can be a non-transitory (non-transitory) memory, such as a read-only memory (read only memory, ROM), which can be integrated with the processor on the same chip, or can be respectively arranged in different On the chip, the embodiment of the present application does not limit the type of the memory and the configuration of the memory and the processor.

It should be understood that a related data interaction process such as sending indication information may be a process of outputting indication information from a processor, and receiving capability information may be a process of receiving input capability information from a processor. In particular, processed output data may be output to the transmitter, and input data received by the processor may be from the receiver. Wherein, the transmitter and the receiver may be collectively referred to as a transceiver.

The processing device in the fourteenth aspect above can be a chip, and the processor can be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc.; when implemented by software When implemented, the processor may be a general-purpose processor, which is realized by reading software codes stored in a memory, and the memory may be integrated in the processor, or may be located outside the processor and exist independently.

In a fifteenth aspect, a computer program product is provided, and the computer program product includes: a computer program (also referred to as code, or an instruction), which, when the computer program is executed, causes the computer to perform the above-mentioned first aspect, second A method in any possible implementation manner of the aspect, the fourth aspect, or the fifth aspect.

In a sixteenth aspect, a computer-readable storage medium is provided, and the computer-readable storage medium stores a computer program (also referred to as code, or instruction) when it is run on a computer, so that the computer executes the above-mentioned first aspect , the second aspect, the fourth aspect, or the method in any possible implementation manner of the fifth aspect.

Description of drawings

FIG. 1 is a schematic diagram of a system architecture provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of information transmission provided by an embodiment of the present application;

Fig. 3 is a schematic flowchart of another information transmission method provided by the embodiment of the present application;

Fig. 4 is a schematic flowchart of another information transmission method provided by the embodiment of the present application;

Fig. 5 is a schematic flowchart of another information transmission method provided by the embodiment of the present application;

Fig. 6 is a schematic flowchart of another information transmission method provided by the embodiment of the present application;

Fig. 7 is a schematic flowchart of another information transmission method provided by the embodiment of the present application;

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

FIG. 9 is a schematic block diagram of another communication device provided by an embodiment of the present application;

FIG. 10 is a schematic block diagram of another communication device provided by an embodiment of the present application;

FIG. 11 is a schematic block diagram of another communication device provided by an embodiment of the present application;

Fig. 12 is a schematic block diagram of another communication 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.

The technical solution of the embodiment of the present application can be applied to various communication systems, for example: 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), universal mobile telecommunications system (UMTS), fifth generation (5th generation, 5G) system or new radio (new radio, NR) or other evolved communication systems, etc.

In order to facilitate understanding of the technical solutions provided by the various embodiments of the present application, some technical terms involved in the embodiments of the present application are explained first.

1. Terminal equipment

The terminal equipment in the embodiment of the present application may also be referred to as: user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), access terminal, subscriber unit, subscriber station, Mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc. The terminal device involved in this embodiment of the present application may be a device that provides voice/data connectivity to users, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and the like. At present, examples of some terminals are: mobile phone (mobile phone), tablet computer, notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) device, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart grid Wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, cellular phones, cordless phones, session initiation protocol , SIP) telephone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, vehicle Devices, wearable devices, terminal devices in a 5G network or terminal devices in a future evolving public land mobile network (PLMN), etc., are not limited in this embodiment of the present application.

As an example but not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction. Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.

In addition, in the embodiment of the present application, the terminal device can also be a terminal device in the Internet of Things (IoT) system. IoT is an important part of the development of information technology in the future, and its main technical feature is that items can be Connect with the network to realize the intelligent network of man-machine interconnection and object interconnection. The terminal device of the present application can also be a vehicle-mounted unit, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip, or a vehicle-mounted unit built into the vehicle as one or more components or units. The on-board components, on-board chips, or on-board units can implement the method of the present application. Therefore, the embodiments of the present application can be applied to the Internet of Vehicles, such as vehicle to everything (V2X), vehicle-to-vehicle communication long-term evolution technology (long term evolution-vehicle, LTE-V), vehicle-to-vehicle (vehicle-to-vehicle , V2V) etc.

2. Network equipment

The network devices involved in this embodiment of the present application include a first network device and a second network device, wherein the first network device includes a location management function (location management function, LMF) device, a serving base station and other network unit entities, which are not limited in this application . The second network equipment may include access and mobile management function (access and mobile management function, AMF) equipment, transmission reception point (transmission reception point, TRP), and may also be an evolved base station (evolved NodeB, eNB or eNodeB), it can also be a home base station (for example, home evolved NodeB, or home Node B, HNB), a base band unit (base band unit, BBU), or a cloud radio access network (cloud radio access network, CRAN) scenario The wireless controller under the network, or the access network device can be a relay station, access point, vehicle-mounted device, wearable device, access network device in the 5G network or access network device in the future evolved PLMN network, etc., which can be It is an access point (access point, AP) in the WLAN, may be a gNB in a new radio (new radio, NR) system, may be a satellite base station in a satellite communication system, etc., and is not limited in this embodiment of the present application.

3. Positioning method

According to the source of the positioning reference signal (PRS), positioning methods are divided into the following three categories: downlink positioning methods, uplink positioning methods, and uplink and downlink joint positioning methods. It should be noted that the uplink and downlink are relative terms. If the transmission direction from the network device to the terminal device is downlink (this article takes this as an example), then the transmission direction from the terminal device to the network device is uplink. On the contrary, if the transmission direction from the network device to the terminal device is uplink, then the transmission direction from the terminal device to the network device is downlink.

In the downlink positioning method, the terminal device measures the downlink positioning reference signal (DL-PRS) sent by the network device side. The terminal device estimates the position of the terminal device according to the measurement result, and realizes downlink positioning.

In the uplink positioning method, the network device measures an uplink positioning reference signal (uplink positioning reference signal, UL-PRS) sent by the terminal device. The network device estimates the position of the terminal device according to the measurement result, and realizes uplink positioning. The uplink positioning reference signal may be a sounding reference signal (sounding reference signal, SRS), or other reference signals that can be used for uplink measurement. This embodiment of the present application does not limit it.

In the uplink and downlink joint positioning method, the network device measures the uplink positioning signal from the terminal device, and the terminal device measures the downlink positioning reference signal from the network device. The location of the terminal device is estimated based on the measurements of the network device and the measurements of the terminal device.

FIG. 1 is a schematic diagram of a system architecture 100 provided by an embodiment of the present application. As shown in FIG. 1 , a system architecture 100 includes a terminal device 101 , a first network device 102 , and a second network device 103 . Wherein, the control plane and the user plane of the first network device 102 are the enhanced service mobile location center E-SMLC and the positioning platform SLP respectively. The second network device 103 may receive a location service request (location service request) related to the terminal device 101 from a 5GC LCS entity (not shown in the figure), or the second network device 103 itself may also initiate a location service on behalf of a specific target terminal device , and forward the location service request to the first network device 102. The terminal device 101 may measure downlink signals from the radio access network and other sources to support positioning, and send positioning result information to the first network device 102 . The first network device 102 and the second network device 103 may exchange the positioning result of the terminal device 101 and other positioning capability-related information and the like. After the second network device 103 obtains the positioning result information returned by the terminal device 101, the second network device 103 may return the positioning result information to the 5GC LCS entity. In addition, the second network device 103 may also store the positioning capability-related information of the terminal device 101 for use by the first network device 102 in the next positioning.

In a wireless communication system, a network device needs to know information about a positioning capability of a terminal device, and judge which positioning capability to use for positioning according to the information about the positioning capability. In order to ensure that the network device can make correct decisions, and then perform correct and efficient positioning, it is necessary to ensure the accuracy and completeness of the information on the positioning capability of the terminal device acquired by the network device.

Currently, a network device may inquire whether a terminal device supports at least one positioning capability through a positioning capability request message according to its own needs. Correspondingly, the terminal device may report the positioning capability supported by the terminal device to the network device based on the above request message. The network device may receive the positioning capability supported by the terminal device, and store information about the positioning capability supported by the terminal device. In this way, after the next positioning process is started, the network device can directly perform positioning based on the positioning capability information supported by the terminal device, which reduces the need for the network device to query the terminal device for positioning capability information again, thereby reducing signaling interaction and reducing positioning. purpose of delay.

It should be understood that the information on all positioning capabilities of the terminal device may include at least one of the following: whether to support long term evolution positioning protocol (long term evolution positioning protocol, LPP) segment positioning capability information, observed time difference of arrival (observed time difference of arrival) , OTDOA) positioning capability information, enhanced cell-ID (ECID) positioning capability information, downlink time difference of arrival (DL-TDOA) positioning capability information, downlink departure angle (downlink angle -of-departure, DL-AoD) positioning capability information, uplink angle of arrival (uplink angle of arrival, UL-AoA) positioning capability information, uplink time difference of arrival (uplink time difference of arrival, UL-TDOA) positioning capability information , and multiple round trip time (multi-round trip time, Multi-RTT) positioning capability information, assisted global navigation satellite system (assisted global navigation satellite system, A-GNSS) positioning capability information, sensor (sensor) positioning capability information, or terrestrial beacon system (TBS) positioning capability. Among them, the OTDOA positioning capability includes at least one of the following: the BAND list supported by the terminal device, whether to support inter-frequency reference signal time difference (reference signal time difference, RSTD) measurement and other capabilities. The ECID positioning capability includes whether it supports reference signal received power (reference signal received power, RSRP) measurement capability, reference signal received quality (reference signal received quality, RSRQ) measurement capability, or delay Rx-Tx measurement capability.

In addition, the positioning reference signal (positioning reference signal, PRS) includes a downlink positioning reference signal (downlink positioning reference signal, DL-PRS), and an uplink positioning reference signal (uplink positioning reference signal, UL-PRS). Wherein, the downlink positioning reference signal is used in the downlink positioning method and the combined uplink and downlink positioning method. The uplink positioning reference signal may be a sounding reference signal (sounding reference signal, SRS), or other reference signals that can be used for uplink measurement. This embodiment of the present application does not limit this, and can be used for uplink positioning methods and uplink and downlink joint positioning methods.

It should be understood that "based on" in the embodiments of the present application may also be replaced with "according to", which is not limited in the present application.

FIG. 2 shows a schematic flowchart of an information transmission method 200. As shown in FIG. 2, the method 200 includes the following features or steps:

S201. The first network device sends a request message to the terminal device, where the request message is used to request information about at least one positioning capability of the terminal device.

Optionally, the first network device may also receive a request message requesting location information of the terminal device sent from the second network device, and send the request message to the terminal device based on the request message requesting location information of the terminal device.

S202. The terminal device receives the request message from the above-mentioned first network device, and based on the above-mentioned request message, sends indication information to the above-mentioned first network device, where the indication information is used to indicate at least one positioning capability information indicated in the above-mentioned request message , information about the positioning capability supported by the terminal device.

S203. The first network device receives the indication information, performs positioning based on the indication information, and obtains a positioning result.

S204. The first network device sends the positioning result and the indication information to the second network device.

S205. The second network device receives the positioning result and the indication information, and stores the indication information.

S206. The second network device sends a request message requesting the location information of the terminal device to the first network device, where the request message includes the indication information.

S207. The first network device receives the message requesting the location information of the terminal device from the second network device, performs positioning based on the indication information, and obtains a positioning result.

Since the second network device has stored the above indication information, when the first network device receives the request message for the location information of the above terminal device sent by the second network device, it also receives the above indication information, so that the first network device can know that the above terminal device The positioning capability information supported by the device can avoid re-requesting the positioning capability information supported by the terminal device in the above indication information from the terminal device, thereby reducing signaling overhead. Since the positioning capability information supported by the terminal device can be quickly obtained, the positioning time can be reduced. extended purpose.

However, the indication information obtained by the first network device from the second network device only includes at least one positioning capability information indicated by the above request message, so the positioning capability information stored by the second network device may not be supported by the terminal device or not Information about all supported positioning capabilities. Therefore, the above method has the problem of inaccurate storage of information about the positioning capability of the terminal device. In the first case, at least one item of positioning capability information other than the above indication information is the positioning capability information supported by the terminal device (but the first network device has never requested it, so it is not stored at the second network device), the The first network device will not be able to determine whether at least one positioning capability information other than the above indication information is the positioning capability information supported by the terminal device, which may cause the first network device to misjudge at least one positioning capability other than the above indication information. One item of positioning capability information is the positioning capability information not supported by the above-mentioned terminal equipment, and positioning without using the information of the positioning capability will affect the performance of the positioning service. In the second case, the at least one positioning capability information other than the above indication information is the positioning capability information that the terminal device does not support (even if the first network device has requested it, because it does not support it, it is not supported by the second network device. storage), the first network device will not be able to determine whether at least one item of positioning capability information other than the above indication information is the positioning capability information of the terminal device requested by the first network device, which is not supported by the terminal device The positioning capability information causes the first network device to repeatedly request the terminal device for the positioning capability information not supported by the terminal device, resulting in increased signaling overhead and increased positioning delay.

Exemplarily, the foregoing request message is used to request information about the OTDOA positioning capability, the ECID positioning capability, and the DL-TDOA positioning capability of the terminal device. The above indication information obtained by the first network device from the second network device includes the OTDOA positioning capability information, the ECID positioning capability information, and the DL-TDOA positioning capability information indicated by the above request message, the ECID positioning capability supported by the terminal device information and DL-TDOA positioning capability information. If the positioning capability information supported by the terminal device also includes the DL-AoD positioning capability, but because the DL-AoD positioning capability information is not requested, the above indication information does not include the DL-AoD positioning capability information. Therefore, the first network device may misjudge the information of the DL-AoD positioning capability as the information that the terminal device does not support the positioning capability, thus making it impossible to use the information of the DL-AoD positioning capability for positioning and affecting the performance of the positioning service.

Exemplarily, the foregoing request message is used to request information about the OTDOA positioning capability, the ECID positioning capability, and the DL-TDOA positioning capability of the terminal device. The indication information obtained by the first network device from the second network device on the terminal device includes information about the ECID positioning capability and information about the DL-TDOA positioning capability supported by the terminal device. Since the above indication information does not include information about the OTDOA positioning capability, it indicates that the OTDOA positioning capability is a positioning capability not supported by the terminal device. According to the above method, when the second network device requests the location information of the above-mentioned terminal device from the first network device, the first network device will not be able to judge whether it has previously requested the information of the OTDOA positioning capability of the terminal device. Therefore, the first network device The device may need to send a request message for requesting information about the OTDOA positioning capability of the terminal device to the terminal device again, resulting in increased signaling overhead and timing delay.

In view of this, the present application proposes an information transmission method, where the terminal device may report first indication information to the first network device, where the first indication information includes at least one positioning capability information indicated in the first request message, and information about at least one positioning capability not indicated in the first request message. The first network device may send the first indication information to the second network device. The second network device may send the above-mentioned first indication information to the first network device together by sending a request message requesting the location information of the above-mentioned terminal device to the above-mentioned first network device, so that the first network device does not need to send the above-mentioned terminal device again The device sends a request message requesting information on positioning capabilities. The first network device can clearly know the positioning capabilities of the terminal device according to the above first indication information, which solves the problem of inaccurate information storage of the positioning capability of the terminal device, thereby preventing the first network device from being unable to determine or even misjudge The problem of a positioning capability avoids multiple requests from the first network device for the information of the same positioning capability of the terminal device, effectively reduces signaling overhead and positioning delay, and improves the performance of the positioning service.

In order to make the purpose and technical solution of the present application more clear and intuitive, the information transmission method and the communication device adopted in the embodiments of the present application will be described in detail below in conjunction with the drawings and the embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

Before introducing the method and device provided by the embodiment of the present application, the following points are explained first.

First, in the embodiments shown below, various terms and English abbreviations, such as benchmark data or differential data, are illustrative examples given for convenience of description, and should not constitute any limitation to the present application. This application does not exclude the possibility of defining other terms that can achieve the same or similar functions in existing or future agreements.

Second, the first, second and various numbers in the embodiments shown below are only for convenience of description, and are not used to limit the scope of the embodiments of the present application.

Third, "at least one" means one or more, and "multiple" means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the contextual objects are an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (one) of a, b and c may represent: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c, wherein a, b, c can be single or multiple.

FIG. 3 is a schematic flowchart of an information transmission method 300 provided by an embodiment of the present application. The method 300 may be applicable to the system architecture 100 shown in FIG. 1 above, and may also be applicable to other architectures, which is not limited in this embodiment of the present application. As shown in Figure 3, the method 300 includes the following features or steps:

S301. The first network device sends a first request message to the terminal device, where the first request message is used to request information about at least one positioning capability of the terminal device.

Exemplarily, the above-mentioned first request message may be an LPP message, such as an LPP request capabilities message, and the first network device may request information about at least one positioning capability of the above-mentioned terminal device through the first request message.

It should be understood that the foregoing first request message may also be other messages, which are not limited in this application.

Optionally, the above-mentioned first request message includes fifth indication information, and the fifth indication information is used to instruct the above-mentioned terminal device to report at least one positioning capability information indicated in the first request message, and the above-mentioned first request message Information about at least one positioning capability not indicated in the above; the terminal device may send the first indication information to the first network device based on the fifth indication information.

Exemplarily, the foregoing fifth indication information may be 1-bit indication information or other information, which is not limited in this application.

S302. The terminal device receives the first request message from the first network device, and sends first indication information to the first network device based on the first request message, where the first indication information includes the indication in the first request message Information about at least one positioning capability, and information about at least one positioning capability not indicated in the first request message.

Optionally, the terminal device may send the first indication information to the first network device through an LPP message, such as an LPP provide capabilities message.

It should be understood that the at least one positioning capability information not indicated in the above first request message may be understood as the at least one positioning capability information indicated in the historical request message, or other positioning capability information, which is not limited in this application .

Exemplarily, the historical request message may be at least one request message before the first request message.

S303. The first network device sends the first indication information to the second network device.

Exemplarily, the first network device may send the above-mentioned first indication information to the second network device through an nlmf_location_determine location_response message.

It should be understood that the first network device may also send the first indication information to the second network device through other messages, which is not limited in this application.

Optionally, the above-mentioned first network device may also send a positioning result to the above-mentioned second network device.

Exemplarily, the first network device may send positioning assistance information to the terminal device based on the foregoing first indication information. The terminal device receives the positioning assistance information, performs a positioning operation based on the positioning assistance information, and sends a positioning result to the first network device. The first network device may send the positioning result and the first indication information to the second network device.

S304. The second network device receives the first indication information from the first network device, and stores the first indication information.

Optionally, the above first indication information may be sent in the form of a bitmap.

It should be understood that the first indication information may occupy N bits, N is a positive integer greater than or equal to 1, and the N bits may correspond to at least one item of positioning capability information included in the first indication information, so that according to the selection of the bits, Value to indicate whether the terminal device supports the positioning capability information. If the terminal device does not support the information of one of the N positioning capabilities, the value of the bit corresponding to the information of the positioning capability can be "0". On the contrary, if the terminal device supports one of the N positioning capabilities For capability information, the value of a bit corresponding to the positioning capability information may be "1". Optionally, the correspondence between N positioning capabilities and N bits may be preset by a protocol or indicated by a network device, which is not limited in this application.

Exemplarily, when the first indication information includes OTDOA positioning capability information, ECID positioning capability information and DL-TDOA positioning capability information. In a possible implementation manner, the first indication information may be sent in the form of "011", and "011" may respectively represent the positioning capability information included in the first indication information. The first "0" indicates that the above OTDOA positioning capability information is the positioning capability information not supported by the terminal device. The second "1" represents the above ECID positioning capability information, which is the positioning capability information supported by the terminal device. The third "1" represents the above DL-TDOA positioning capability information, which is the positioning capability information supported by the terminal device.

It should be understood that the foregoing first indication information may also be sent in a data packet or in other forms, which is not limited in this application.

In this embodiment of the present application, the terminal device may report first indication information to the first network device, where the first indication information includes at least one positioning capability information indicated in the above-mentioned first request message, and the information in the first request message Information about at least one positioning capability not indicated. The first network device receives the first indication information, and sends the first indication information to the second network device for storage. So that before the next positioning, the first network device can obtain the above-mentioned stored first indication information from the second network device, and obtain the information of at least one positioning capability that it has requested based on the information of the first positioning capability, and the at least one positioning capability Information about a positioning capability supported by the terminal device and information about a positioning capability not supported by the terminal device in one piece of positioning capability information. It can solve the problem of inaccurate storage of positioning capability information, so that the first network device does not need to repeatedly request the positioning capability information of the terminal device it has already requested, and avoids the first network device misjudging a certain positioning capability. The loss caused by information can effectively reduce signaling overhead and positioning delay, and improve the performance of positioning services.

Optionally, the at least one positioning capability information indicated in the first request message includes at least one of the following: the positioning capability supported by the terminal device in the at least one positioning capability information indicated in the first request message Information: information about a positioning capability not supported by the terminal device in at least one positioning capability information indicated in the first request message.

The at least one positioning capability information not indicated in the first request message may be the at least one positioning capability information indicated by the historical request message, and the at least one positioning capability information indicated by the historical request message may include at least one of the following Information about the positioning capability supported by the above-mentioned terminal device in the at least one positioning capability information indicated in the history request message; information about the positioning capability not supported by the above-mentioned terminal device in the at least one positioning capability information indicated in the history request message.

Exemplarily, if the first request message is used to request the positioning capability information of the terminal device includes OTDOA positioning capability information, ECID positioning capability information, and DL-TDOA positioning capability information. The OTDOA positioning capability refers to the positioning capability supported by the terminal equipment, and the ECID positioning capability and DL-TDOA positioning capability refer to the positioning capabilities not supported by the above terminal equipment. The at least one positioning capability information indicated in the history request message includes DL-AoD positioning capability information, UL-AoA positioning capability information, and UL-TDOA positioning capability information. The DL-AoD positioning capability is a positioning capability supported by a terminal device, and the UL-AoA positioning capability and UL-TDOA positioning capability are positioning capabilities not supported by the terminal device above.

Then, the information of at least one positioning capability indicated in the first request message included in the first indication information sent by the terminal device to the first network device, and the information of at least one positioning capability indicated in the history request message , can include the following situations.

In the first possible situation, the first indication information sent by the terminal device to the first network device may include the OTDOA positioning capability information, ECID positioning capability information and DL-TDOA positioning capability information indicated in the first request message. The positioning capability information, and the OTDOA positioning capability information supported by the terminal device in the positioning capability information indicated in the first request message. And, the first indication information includes the DL-AoD positioning capability information, the UL-AoA positioning capability information and the UL-TDOA positioning capability information indicated in the history request message.

Exemplarily, after the first network device obtains the positioning capability information in the first indication information, the first network device may, according to the OTDOA positioning capability information, ECID positioning capability information and DL-TDOA positioning capability information, and the OTDOA positioning capability information supported by the terminal device in the positioning capability information indicated in the first request message, and determine the above positioning capability information indicated in the first request message. The information about the positioning capability not supported by the terminal device includes the information about the above-mentioned ECID positioning capability and the information about the DL-TDOA positioning capability. The first network device may also use the DL-AoD positioning capability information, UL-AoA positioning capability information, UL-TDOA positioning capability information indicated in the history request message, and the positioning capability information stored by the second network device Information determines the DL-AoD positioning capability information, UL-AoA positioning capability information, and UL-TDOA positioning capability information indicated in the above history request message, the above UL-AoA positioning capability information and UL-TDOA positioning capability information The positioning capability information supported by the above-mentioned terminal device. Here, the positioning capability information in the history indication information is similar to the above-mentioned first indication information. The history indication information includes the positioning capability information of the terminal device requested by history, and the historical In the requested positioning capability information of the terminal device, the positioning capability information supported by the terminal device is included. The first network device may also determine that the information about the UL-AoA positioning capability and the information about the UL-TDOA positioning capability of the terminal device indicated in the history request message are not supported by the terminal device based on the information about the positioning capability supported by the terminal device location information. Then the first network device can locate based on the information of the positioning capability supported by the terminal device, so as to solve the problem of inaccurate storage of the positioning capability information. Or to request positioning capability information other than the above-mentioned first indication information. Unnecessary interaction between the terminal device and the first network device is reduced, thereby reducing signaling overhead and positioning delay, and improving the performance of the positioning service.

In the second possible situation, the first indication information sent by the terminal device to the first network device includes the OTDOA positioning capability information, ECID positioning capability information, and DL-TDOA positioning capability information indicated in the first request message. Information about the OTDOA positioning capability supported by the terminal device in the positioning capability information indicated in the first request message. And, the first indication information may include DL-AoD positioning capability information, UL-AoA positioning capability information, UL-TDOA positioning capability information indicated in the history request message, and the above-mentioned positioning capability indicated in the history request message. Information about the DL-AoD positioning capability supported by the terminal device in the capability information.

Exemplarily, after the first network device obtains the positioning capability information in the first indication information, the first network device may, according to the OTDOA positioning capability information, ECID positioning capability information and DL-TDOA positioning capability information, and information about the OTDOA positioning capability supported by the terminal device in the positioning capability information indicated in the first request message, determining the ECID positioning capability information indicated in the first request message and The information of the DL-TDOA positioning capability is the information of the positioning capability not supported by the above-mentioned terminal equipment. The first network device may also use the DL-AoD positioning capability information, UL-AoA positioning capability information, and UL-TDOA positioning capability information indicated in the history request message, and the above positioning capability information indicated in the history request message. The DL-AoD positioning capability information supported by the terminal device in the information determines that the information indicating the UL-AoA positioning capability and the UL-TDOA positioning capability information in the history request message are positioning information that the terminal device does not support. Then the first network device can perform positioning based on the positioning capability information supported by the terminal device, which can solve the problem of inaccurate storage of the positioning capability information, or the first network device can request the above-mentioned positioning capability based on the positioning capability information supported by the terminal device. The information indicating the positioning capability other than the first information. Unnecessary interaction between the terminal device and the first network device is reduced, signaling overhead and positioning delay can be reduced, and performance of positioning services can be improved.

Optionally, in the second case above, the first indication information includes the OTDOA positioning capability information, the ECID positioning capability information, and the DL-TDOA positioning capability information indicated in the first request message, and the first Information about the OTDOA positioning capability supported by the terminal device in the positioning capability information indicated in the request message. And, the first indication information may also include the DL-AoD positioning capability information, the UL-AoA positioning capability information, the UL-TDOA positioning capability information indicated in the history request message, and the above-mentioned information indicated in the history request message. In the positioning capability information, the terminal device does not support UL-AoA positioning capability information and UL-TDOA positioning capability information.

Exemplarily, after the first network device obtains the positioning capability information in the first indication information, the first network device may, according to the OTDOA positioning capability information, ECID positioning capability information and DL-TDOA positioning capability information, and OTDOA positioning capability information supported by the terminal device in the positioning capability information indicated in the first request message, determine the ECID positioning capability information indicated in the first request message and DL - The information of the TDOA positioning capability is the information of the positioning capability not supported by the above-mentioned terminal equipment. The first network device may also use the DL-AoD positioning capability information, UL-AoA positioning capability information, UL-TDOA positioning capability information indicated in the history request message, and the above positioning capability indicated in the history request message In the information of the UL-AoA positioning capability and UL-TDOA positioning capability information that the terminal device does not support, it is determined that the above-mentioned UL-AoA positioning capability information and UL-TDOA positioning capability information are the positioning capabilities supported by the terminal device Information. Then the first network device can locate based on the information of the positioning capability supported by the terminal device, so as to solve the problem of inaccurate storage of the positioning capability information. Alternatively, the first network device may request information about the positioning capability other than the first indication information based on the information about the positioning capability supported by the terminal device. Unnecessary interaction between the terminal device and the first network device is reduced, signaling overhead and positioning delay are reduced, and performance of the positioning service is improved.

In a third possible situation, the first indication information sent by the terminal device to the first network device includes the information indicating the OTDOA positioning capability, the information of the ECID positioning capability, and the information of the DL-TDOA positioning capability in the first request message, and the OTDOA positioning capability information supported by the terminal device in the above positioning capability information indicated in the first request message. And, the first indication information also includes UL-AoA positioning capability information and UL-TDOA positioning capability information not supported by the terminal device in the positioning capability information indicated in the history request message.

Exemplarily, after the first network device obtains the positioning capability information in the first indication information, the first network device may, according to the OTDOA positioning capability information, ECID positioning capability information and DL-TDOA positioning capability information, and OTDOA positioning capability information supported by the terminal device in the positioning capability information indicated in the first request message, determine the ECID positioning capability information indicated in the first request message and DL - The information of the TDOA positioning capability is the information of the positioning capability not supported by the above-mentioned terminal equipment. The above-mentioned first network device may also use the UL-AoA positioning capability information and UL-TDOA positioning capability information that the terminal device does not support in the above-mentioned positioning capability information indicated in the history request message, and the information stored by the above-mentioned second network device. The positioning capability information determines that the UL-AoA positioning capability information and the UL-TDOA positioning capability information indicated in the above history request message are the positioning capability information supported by the terminal device, and then the positioning capability indicated in the above history request message can also be determined. The capability information includes the DL-AoD positioning capability information, the UL-AoA positioning capability information, and the UL-TDOA positioning capability information. Here, the positioning capability information in the historical indication information is similar to the first indication information above. The historical indication information includes information about the positioning capability of the terminal device requested in the history, and information about the positioning capability supported by the terminal device among the information about the positioning capability of the terminal device requested in the history. Then the first network device can locate based on the information of the positioning capability supported by the terminal device, so as to solve the problem of inaccurate storage of the positioning capability information. Alternatively, the first network device may request information about the positioning capability other than the first indication information based on the information about the positioning capability supported by the terminal device. Unnecessary interaction between the terminal device and the first network device is reduced, signaling overhead and positioning delay are reduced, and performance of the positioning service is improved.

In the fourth possible situation, the first indication information sent by the terminal device to the first network device may include the OTDOA positioning capability information, ECID positioning capability information, and DL-TDOA positioning capability information indicated in the first request message. Capability information, and OTDOA positioning capability information supported by the terminal device in the positioning capability information indicated in the first request message. And, the first indication information may include DL-AoD positioning capability information, UL-AoA positioning capability information, and UL-TDOA positioning capability information indicated in the history request message, and the positioning capability information indicated in the history request message Information about the DL-AoD positioning capability supported by the terminal device in the information, and information about the UL-AoA positioning capability and UL-TDOA positioning capability that the terminal device does not support in the above positioning capability information indicated in the history request message information.

Exemplarily, after the first network device obtains the positioning capability information in the first indication information, the first network device may also use the OTDOA positioning capability information and the ECID positioning capability information indicated in the first request message and DL-TDOA positioning capability information, and the OTDOA positioning capability information supported by the terminal device in the positioning capability information indicated in the first request message, and determine the ECID positioning capability information indicated in the first request message and DL-TDOA positioning capability information is the positioning capability information not supported by the above-mentioned terminal equipment. Then the first network device can locate based on the information of the positioning capability supported by the terminal device, which can solve the problem of inaccurate storage of the positioning capability information. Alternatively, the first network device may request information about the positioning capability other than the first indication information based on the information about the positioning capability supported by the terminal device. Unnecessary interaction between the terminal device and the first network device is reduced, signaling overhead and positioning delay are reduced, and performance of the positioning service is improved.

In the fifth possible situation, as above, the first indication information sent by the terminal device to the first network device includes the OTDOA positioning capability information, ECID positioning capability information, DL- The TDOA positioning capability information, and the ECID positioning capability information and DL-TDOA positioning capability information not supported by the terminal device in the positioning capability information indicated in the first request message. And, the first indication information may include DL-AoD positioning capability information, UL-AoA positioning capability information, and UL-TDOA positioning capability information indicated in the history request message.

Exemplarily, after the first network device obtains the positioning capability information in the first indication information, the first network device may also use the OTDOA positioning capability information and the ECID positioning capability information indicated in the first request message and DL-TDOA positioning capability information, and the positioning capability information not supported by the terminal device in the above positioning capability information indicated in the first request message includes the above ECID positioning capability information and DL-TDOA positioning capability information, determine The OTDOA positioning capability information indicated in the first request message is the positioning capability information supported by the terminal device. The first network device may also use the DL-AoD positioning capability information, UL-AoA positioning capability information, UL-TDOA positioning capability information indicated in the history request message, and the positioning capability information stored by the second network device The information determines that among the DL-AoD positioning capability information, UL-AoA positioning capability information, and UL-TDOA positioning capability information indicated in the history request message, the positioning capability information supported by the terminal device includes the above UL-AoA positioning capability information and UL-TDOA positioning capability information. And based on the positioning capability information supported by the terminal device, determine that the UL-AoA positioning capability information and UL-TDOA positioning capability information indicated in the history request message are positioning information that the terminal device does not support. Here, the positioning capability information in the history indication information is similar to the above first indication information, the history indication information includes the positioning capability information of the terminal device requested in the history, and the positioning capability information of the terminal device requested in the history , information about the positioning capability supported by the terminal device. Then the first network device can locate based on the information of the positioning capability supported by the terminal device, so as to solve the problem of inaccurate storage of the positioning capability information. Alternatively, the first network device may request information about the positioning capability other than the first indication information based on the information about the positioning capability supported by the terminal device. Unnecessary interaction between the terminal device and the first network device is reduced, signaling overhead and positioning delay are reduced, and performance of the positioning service is improved.

In the sixth possible situation, as above, the first indication information sent by the terminal device to the first network device includes the OTDOA positioning capability information, ECID positioning capability information, DL- The TDOA positioning capability information, and the ECID positioning capability information and DL-TDOA positioning capability information not supported by the terminal device in the positioning capability information indicated in the first request message. And, the first indication information may include the DL-AoD positioning capability information, the UL-AoA positioning capability information, the UL-TDOA positioning capability information indicated in the history request message, and the positioning capability indicated in the history request message. Information about the DL-AoD positioning capability supported by the terminal device in the capability information.

Exemplarily, after the first network device obtains the positioning capability information in the first indication information, the first network device may also use the OTDOA positioning capability information and the ECID positioning capability information indicated in the first request message and DL-TDOA positioning capability information, and the positioning capability information not supported by the terminal device in the above positioning capability information indicated in the first request message includes the above ECID positioning capability information and DL-TDOA positioning capability information, determine The OTDOA positioning capability information indicated in the first request message is the positioning capability information supported by the terminal device. The first network device may also use the DL-AoD positioning capability information, UL-AoA positioning capability information, UL-TDOA positioning capability information indicated in the history request message, and the above positioning capability indicated in the history request message In the information of the DL-AoD positioning capability supported by the terminal device, it is determined that the above-mentioned UL-AoA positioning capability information and UL-TDOA positioning capability information indicated in the above-mentioned history request message are positioning information that the above-mentioned terminal device does not support . Then the first network device can locate based on the information of the positioning capability supported by the terminal device, so as to solve the problem of inaccurate storage of the positioning capability information. Alternatively, the first network device may request information about the positioning capability other than the first indication information based on the information about the positioning capability supported by the terminal device. Unnecessary interaction between the terminal device and the first network device is reduced, signaling overhead and positioning delay are reduced, and performance of the positioning service is improved.

In the seventh possible situation, as above, the first indication information sent by the terminal device to the first network device includes the OTDOA positioning capability information, ECID positioning capability information, DL- TDOA positioning capability information, and ECID positioning capability information and DL-TDOA positioning capability information not supported by the terminal device in the positioning capability information indicated in the first request message. And, the first indication information may include the DL-AoD positioning capability information, the UL-AoA positioning capability information, the UL-TDOA positioning capability information indicated in the history request message, and the positioning capability indicated in the history request message. In the capability information, the information about the UL-AoA positioning capability and the information about the UL-TDOA positioning capability that the terminal device does not support.

Exemplarily, after the first network device obtains the positioning capability information in the first indication information, the first network device may also use the OTDOA positioning capability information and the ECID positioning capability information indicated in the first request message and DL-TDOA positioning capability information, and the positioning capability information not supported by the terminal device in the above positioning capability information indicated in the first request message includes the above ECID positioning capability information and DL-TDOA positioning capability information, determine The OTDOA positioning capability information indicated in the first request message is the positioning capability information supported by the terminal device. The first network device may also use the DL-AoD positioning capability information, UL-AoA positioning capability information, UL-TDOA positioning capability information indicated in the history request message, and the above positioning capability indicated in the history request message In the information of the UL-AoA positioning capability and UL-TDOA positioning capability information that the terminal device does not support, it is determined that the above-mentioned UL-AoA positioning capability information and UL-TDOA positioning capability information are the positioning capabilities supported by the terminal device Information. Then the first network device can locate based on the information of the positioning capability supported by the terminal device, so as to solve the problem of inaccurate storage of the positioning capability information. Alternatively, the first network device may request information about the positioning capability other than the first indication information based on the information about the positioning capability supported by the terminal device. Unnecessary interaction between the terminal device and the first network device is reduced, signaling overhead and positioning delay are reduced, and performance of the positioning service is improved.

In the eighth possible situation, as above, the first indication information sent by the terminal device to the first network device includes the OTDOA positioning capability information, ECID positioning capability information, DL- TDOA positioning capability information, and ECID positioning capability information and DL-TDOA positioning capability information not supported by the terminal device in the positioning capability information indicated in the first request message. And, the first indication information may include the DL-AoD positioning capability information indicated in the history request message, the UL-AoA positioning capability information, the UL-TDOA positioning capability information, the above positioning capability indicated in the history request message The positioning capability supported by the terminal device in the information is DL-AoD positioning capability, and the UL-AoA positioning capability information and UL-TDOA positioning capability that the terminal device does not support in the above positioning capability information indicated in the history request message Information.

Exemplarily, after the first network device obtains the positioning capability information in the first indication information, the first network device may also use the OTDOA positioning capability information and the ECID positioning capability information indicated in the first request message and DL-TDOA positioning capability information, and the positioning capability ECID positioning capability information and DL-TDOA positioning capability information that are not supported by the terminal device in the above positioning capability information indicated in the first request message, determine the first request The OTDOA positioning capability information indicated in the message is the positioning capability information supported by the terminal device. Then the first network device can locate based on the information of the positioning capability supported by the terminal device, so as to solve the problem of inaccurate storage of the positioning capability information. Alternatively, the first network device may request information about the positioning capability other than the first indication information based on the information about the positioning capability supported by the terminal device. Unnecessary interaction between the terminal device and the first network device is reduced, signaling overhead and positioning delay are reduced, and performance of the positioning service is improved.

In the ninth possible situation, the first indication information sent by the terminal device to the first network device may include the OTDOA positioning capability information, ECID positioning capability information, and DL-TDOA positioning capability information indicated in the first request message. Positioning capability information, OTDOA positioning capability information supported by the terminal device in the positioning capability information indicated in the first request message, and ECID not supported by the terminal device in the positioning capability information indicated in the first request message Positioning capability information and DL-TDOA positioning capability information. And, the first indication information may include DL-AoD positioning capability information, UL-AoA positioning capability information, and UL-TDOA positioning capability information indicated in the history request message.

Exemplarily, the first network device may also be based on the DL-AoD positioning capability information, UL-AoA positioning capability information, UL-TDOA positioning capability information indicated in the history request message, and the above-mentioned second network device stored The positioning capability information determines the DL-AoD positioning capability information, UL-AoA positioning capability information, and UL-TDOA positioning capability information indicated in the history request message, the above UL-AoA positioning capability information and UL-TDOA positioning capability information The capability information is information about the positioning capability supported by the terminal device. And based on the positioning capability information supported by the terminal device, determine that the UL-AoA positioning capability information and the UL-TDOA positioning capability information of the terminal device indicated in the above history request message are positioning information that the terminal device does not support Here, the positioning capability information in the history indication information is similar to the above first indication information, the history indication information includes the positioning capability information of the terminal device requested in the history, and the positioning capability information of the terminal device requested in the history , information about the positioning capability supported by the terminal device. Then the first network device can locate based on the information of the positioning capability supported by the terminal device, so as to solve the problem of inaccurate storage of the positioning capability information. Alternatively, the first network device may request information about the positioning capability other than the first indication information based on the information about the positioning capability supported by the terminal device. Unnecessary interaction between the terminal device and the first network device is reduced, signaling overhead and positioning delay are reduced, and performance of the positioning service is improved.

In the tenth possible situation, the first indication information sent by the terminal device to the first network device may include the OTDOA positioning capability information, ECID positioning capability information, and DL-TDOA positioning capability information indicated in the first request message. The positioning capability information, the information of the OTDOA positioning capability supported by the terminal device in the positioning capability information indicated in the first request message, and the information not supported by the terminal device in the positioning capability information indicated in the first request message The information of the ECID positioning capability and the information of the DL-TDOA positioning capability. And, the first indication information may include DL-AoD positioning capability information, UL-AoA positioning capability information, UL-TDOA positioning capability information indicated in the history request message, and the above-mentioned positioning capability indicated in the history request message. Information about the DL-AoD positioning capability supported by the terminal device in the capability information.

Exemplarily, the first network device may also be based on the DL-AoD positioning capability information, the UL-AoA positioning capability information, the UL-TDOA positioning capability information indicated in the history request message, and the history request message indicated In the above positioning capability information, the information about the DL-AoD positioning capability supported by the terminal device, determine that the information indicating the UL-AoA positioning capability and the information about the UL-TDOA positioning capability in the above history request message are the positioning information that the terminal device does not support information. Then the first network device can locate based on the information of the positioning capability supported by the terminal device, so as to solve the problem of inaccurate storage of the positioning capability information. Alternatively, the first network device may request information about the positioning capability other than the first indication information based on the information about the positioning capability supported by the terminal device. Unnecessary interaction between the terminal device and the first network device is reduced, signaling overhead and positioning delay are reduced, and performance of the positioning service is improved.

In the eleventh possible situation, the first indication information sent by the terminal device to the first network device may include the OTDOA positioning capability information, ECID positioning capability information, DL- Information about the TDOA positioning capability, information about the OTDOA positioning capability supported by the terminal device in the positioning capability information indicated in the first request message, and information about the positioning capability indicated in the first request message that the terminal device does not support The information of the ECID positioning capability and the information of the DL-TDOA positioning capability. And, the first indication information may include the DL-AoD positioning capability information indicated in the history request message, the UL-AoA positioning capability information, the UL-TDOA positioning capability information, the above positioning capability indicated in the history request message Information about the UL-AoA positioning capability and UL-TDOA positioning capability that the terminal device does not support in the information.

Exemplarily, the above-mentioned first network device may also store the DL-AoD positioning capability information, UL-AoA positioning capability information, and UL-TDOA positioning capability information indicated in the history request message, and the above-mentioned second network device. The location capability information of the historical indication information (the location capability information in the historical indication information is similar to the above first indication information, the historical indication information includes the information of the positioning ability of the terminal device requested in the history, and the positioning capability information of the terminal device requested in the history In the capability information, the positioning capability information supported by the terminal device) to obtain the DL-AoD positioning capability information, UL-AoA positioning capability information and UL-TDOA positioning capability information indicated in the above history request message, the above terminal device The supported positioning capability information includes the above-mentioned UL-AoA positioning capability information and UL-TDOA positioning capability information, and can determine the positioning of the terminal device indicated in the above-mentioned history request message based on the terminal device's supported positioning capability information In the capability information, the above positioning information not supported by the terminal device includes the above UL-AoA positioning capability information and UL-TDOA positioning capability information. Then the first network device can locate based on the information of the positioning capability supported by the terminal device, so as to solve the problem of inaccurate storage of the positioning capability information. Alternatively, the first network device may request information about the positioning capability other than the first indication information based on the information about the positioning capability supported by the terminal device. Unnecessary interaction between the terminal device and the first network device is reduced, signaling overhead and positioning delay are reduced, and performance of the positioning service is improved.

In the twelfth possible situation, the first indication information sent by the terminal device to the first network device may include the OTDOA positioning capability information, ECID positioning capability information, DL- Information about the TDOA positioning capability, information about the OTDOA positioning capability supported by the terminal device in the positioning capability information indicated in the first request message, and information about the positioning capability indicated in the first request message that the terminal device does not support The information of the ECID positioning capability and the information of the DL-TDOA positioning capability. And, the first indication information may include DL-AoD positioning capability information, UL-AoA positioning capability information, and UL-TDOA positioning capability information indicated in the history request message, and the positioning capability information indicated in the history request message Information about the DL-AoD positioning capability supported by the terminal device in the information, and information about the UL-AoA positioning capability and UL-TDOA positioning capability that the terminal device does not support in the above positioning capability information indicated in the history request message information.

Exemplarily, the first network device may also be based on the DL-AoD positioning capability information, the UL-AoA positioning capability information, the UL-TDOA positioning capability information indicated in the history request message, and the history request message indicated In the above positioning capability information, the terminal equipment does not support UL-AoA positioning capability information and UL-TDOA positioning capability information, and determine that the above UL-AoA positioning capability information and UL-TDOA positioning capability information are supported by the above terminal equipment information about the positioning capabilities. Then the first network device can locate based on the information of the positioning capability supported by the terminal device, so as to solve the problem of inaccurate storage of the positioning capability information. Alternatively, the first network device may request information about the positioning capability other than the first indication information based on the information about the positioning capability supported by the terminal device. Unnecessary interaction between the terminal device and the first network device is reduced, signaling overhead and positioning delay are reduced, and performance of the positioning service is improved.

FIG. 4 is a schematic flowchart of another information transmission method 400 provided by an embodiment of the present application. The method 400 may also be applicable to the system architecture 100 shown in FIG. 1 above, and may also be applicable to other architectures, which is not limited in this embodiment of the present application.

As shown in FIG. 4 , the method 400 includes S401-S406, wherein S401-S404 are similar to S301-S304 in the above-mentioned method 300, and will not be repeated here to avoid repetition.

S405. The second network device sends a first message to the first network device, where the first message is used to request location information of the terminal device from the first network device, where the first information includes the first indication information.

Optionally, the first message may be an nlmf_location_determine location_requeset message, and the second network device may request the location information of the terminal device from the first network device through the nlmf_location_determine location_requeset message.

Exemplarily, in the eighth possible situation above, the first network device may know, according to the first indication information included in the first message, that the information about the location capability of the terminal device it has requested includes information about the OTDOA location capability, ECID Positioning capability information, DL-TDOA positioning capability information, DL-AoD positioning capability information, UL-AoA positioning capability information, and UL-TDOA positioning capability information. Wherein, the information about the positioning capability supported by the terminal device includes information about the OTDOA positioning capability and information about the DL-AoD positioning capability. The positioning capability information not supported by the terminal equipment includes ECID positioning capability information, DL-TDOA positioning capability information, UL-AoA positioning capability information, and UL-TDOA positioning capability information. Therefore, the problem of inaccurate storage of information on the positioning capability of the terminal device can be solved.

S406. The first network device receives the first message from the second network device, and sends a second request message to the terminal device, where the second request message is used to request at least one positioning capability other than the first indication information of the terminal device Information.

In this way, the first network device can obtain the location capability information of the requested terminal device through the received first message, thereby avoiding the first network device from repeatedly requesting the location information included in the above-mentioned first indication information through the above-mentioned second request message. Capability information (that is, location capability information that the first network device has requested), reduces signaling overhead and reduces location delay.

Exemplarily, in the foregoing eighth possible situation, the first network device may send a second request message to the foregoing terminal device based on that the first message includes the foregoing first indication information. The second request message is used to request at least one positioning capability information other than all positioning capability information included in the first indication information of the terminal device, that is, the above-mentioned OTDOA positioning capability information, ECID positioning capability information, DL- TDOA positioning capability information, DL-AoD positioning capability information, UL-AoA positioning capability information, and other positioning capability information except UL-TDOA positioning capability information. It can be understood that the first network device can accurately determine the positioning capability information of the unrequested terminal device, thereby avoiding the first network device from repeatedly requesting the positioning capability information included in the first indication information. And because the first indication information may also include at least one positioning capability message indicated by the historical request message, the scope of the positioning capability information included in the first indication information is larger, or the positioning capability included in the first indication information The information is richer. Correspondingly, the range of information about the location capability of the terminal device that has not been requested is smaller, which can reduce the number of times the first network device sends information requesting the location capability of the terminal device to the terminal device, and reduces signaling Overhead, positioning delay is reduced, and service performance is improved.

As an optional embodiment, in addition to the above-mentioned first network device sending to the above-mentioned terminal device a request for requesting information about at least one positioning capability of the terminal device (that is, the first request), the first network device A third request message may also be sent to the terminal device to request information on all positioning capabilities of the terminal device. The terminal device receives the third request message, and sends second indication information to the first network device, where the second indication information includes the information of the located capability indicated in the third request message.

Optionally, the information on all positioning capabilities of the terminal device indicated in the third request message may include information on all positioning capabilities supported by the terminal device, and/or information that the terminal device does not support all positioning capabilities.

Exemplarily, information about all positioning capabilities of the above-mentioned terminal device includes information about OTDOA positioning capabilities, information about ECID positioning capabilities, information about DL-TDOA positioning capabilities, information about DL-AoD positioning capabilities, information about UL-AoA positioning capabilities, UL-TDOA positioning capability information, and Multi-RTT positioning capability information. Among the information of all positioning capabilities of the terminal device, the information of all positioning capabilities supported by the terminal device includes information of OTDOA positioning capability, information of ECID positioning capability and information of DL-TDOA positioning capability. Among all the positioning capability information of the terminal device, the information of all positioning capabilities not supported by the terminal device includes DL-AoD positioning capability information, UL-AoA positioning capability information, UL-TDOA positioning capability information, and Multi-RTT positioning capability information. capability information.

Then, the information of the located capability indicated in the third request message included in the second indication information sent by the terminal device to the first network device. Can include the following situations.

In the first possible situation, the above-mentioned second indication information includes information on all positioning capabilities supported by the terminal device in the information on all positioning capabilities of the above-mentioned terminal device, such as information on OTDOA positioning capabilities, information on ECID positioning capabilities, and DL- Information on TDOA positioning capabilities.

Exemplarily, in the above-mentioned first possible situation, the first network device may learn, based on the above-mentioned second indication information, that among all the positioning capability information of the terminal device indicated in the above-mentioned third request message, the information supported by the above-mentioned terminal device is All positioning capability information includes the above-mentioned OTDOA positioning capability information, ECID positioning capability information and DL-TDOA positioning capability information. The first network device may further obtain information on all positioning capabilities of the terminal device that are not supported by the terminal device, including information on the DL-AoD positioning capability, according to information on all positioning capabilities supported by the terminal device. , UL-AoA positioning capability information, UL-TDOA positioning capability information, and Multi-RTT positioning capability information. That is, among all the positioning capability information of the terminal device indicated in the third request message, all positioning capability information except the information of all positioning capabilities supported by the terminal device is excluded. It can solve the problem of inaccurate information on the positioning capability of the terminal equipment, reduce unnecessary interaction between the first network equipment and the terminal equipment, reduce signaling overhead and positioning delay, and improve the performance of positioning services.

In the second possible situation, the above-mentioned second indication information includes information on all positioning capabilities of the above-mentioned terminal device that are not supported by the terminal device, such as DL-AoD positioning capability information, UL-AoA positioning capability information, etc. information, UL-TDOA positioning capability information, and Multi-RTT positioning capability information.

Exemplarily, in the above-mentioned second possible situation, the first network device may learn, based on the above-mentioned second indication information, that among all the positioning capability information of the terminal device indicated in the above-mentioned third request message, the terminal device does not support The information of all positioning capabilities includes the above-mentioned DL-AoD positioning capability information, UL-AoA positioning capability information, UL-TDOA positioning capability information, and Multi-RTT positioning capability information. The first network device may further learn that information on all positioning capabilities supported by the terminal device includes information on the OTDOA positioning capability, information on ECID positioning capabilities, and DL-TDOA positioning based on information on all positioning capabilities that the terminal device does not support. capability information. (That is, among all the positioning capability information of the terminal device indicated in the above-mentioned third request message, all the positioning capability information except the information of all positioning capabilities not supported by the above-mentioned terminal device). The problem of inaccurate information on the positioning capability of the terminal equipment is solved, unnecessary interaction between the first network equipment and the terminal equipment is reduced, signaling overhead and positioning delay are reduced, and performance of positioning services is improved.

In the third possible situation, the above-mentioned second indication information includes information about all positioning capabilities of the above-mentioned terminal device, among which information that the terminal device supports all positioning capabilities, such as information about OTDOA positioning capabilities, information about ECID positioning capabilities, and DL- Information on TDOA positioning capabilities. And, information about all positioning capabilities of the terminal device that the terminal device does not support, such as DL-AoD positioning capability information, UL-AoA positioning capability information, UL-TDOA positioning capability information, and Multi - Information about RTT positioning capability.

Exemplarily, in the above-mentioned third possible situation, the first network device may learn, based on the above-mentioned second indication information, among all the positioning capability information of the terminal device indicated in the third request message, all the positioning capabilities supported by the above-mentioned terminal device The positioning capability information includes the above-mentioned OTDOA positioning capability information, ECID positioning capability information, and DL-TDOA positioning capability information. And, the information of all positioning capabilities not supported by the terminal device includes the above-mentioned DL-AoD positioning capability information, UL-AoA positioning capability information, UL-TDOA positioning capability information, and Multi-RTT positioning capability information. The problem of inaccurate information on the positioning capability of the terminal equipment is solved, unnecessary interaction between the first network equipment and the terminal equipment is reduced, signaling overhead and positioning delay are reduced, and performance of positioning services is improved.

The solution provided by the present application will be described in detail below by taking the above third possible situation as an example.

FIG. 5 is a schematic flowchart of another information transmission method 500 provided by an embodiment of the present application. The method 500 may also be applicable to the system architecture 100 shown in FIG. 1 above, and may also be applicable to other architectures, which is not limited in this embodiment of the present application. As shown in FIG. 5, the method 500 includes the following features or steps:

S501. The first network device sends a third request message to the terminal device, where the third request message is used to request information about all positioning capabilities of the terminal device.

Exemplarily, the above-mentioned third request message may be an LPP message, such as an LPP request capabilities message, and the first network device may use the LPP request capabilities message to request information about all positioning capabilities of the above-mentioned terminal device.

It should be understood that the foregoing third request message may also be other messages, which are not limited in this application.

S502. The terminal device receives the third request message, and sends second indication information to the first network device, where the second indication information includes information about all positioning capabilities indicated in the third request message.

Optionally, the terminal device may send and report the second indication information to the first network device through an LPP message, such as an LPP provide capabilities message.

Optionally, the terminal device may then send the second indication information to the first network device based on the third request message.

S503. The first network device receives the second indication information from the terminal device, and sends the second indication information to the second network device.

Exemplarily, the first network device may send the second indication information to the second network device through the nlmf_location_determine location_response message.

Optionally, the above-mentioned first network device may also perform positioning based on the second indication information, and also send the positioning result to the second network device.

Exemplarily, in the above-mentioned third possible situation, the first network device may learn, based on the above-mentioned second indication information, which information the above-mentioned terminal device supports among all the positioning capability information of the terminal device indicated in the above-mentioned third request message. All positioning capability information includes the above-mentioned OTDOA positioning capability information, ECID positioning capability information and DL-TDOA positioning capability information. And, the first network device may know, based on the second indication information above, that the information on all positioning capabilities not supported by the terminal device in the information on all positioning capabilities includes the above information on DL-AoD positioning capabilities and information on UL-AoA positioning capabilities , UL-TDOA positioning capability information, and Multi-RTT positioning capability information. The first network device may send positioning assistance information to the terminal device based on information about all positioning capabilities supported by the terminal device, and the terminal device may complete positioning based on the positioning assistance information, and send the positioning result to the first network device. The interaction between the first network device and the terminal device is reduced, signaling overhead and positioning delay are reduced, and the performance of the positioning service is improved.

S504. The above-mentioned second network device receives the second indication information, and stores the second indication information.

Optionally, similar to the foregoing S405 and S406, the foregoing second network device may send a second message to the foregoing first network device, where the second message is used to request the location information of the foregoing terminal device from the first network device, and the first The second message includes the above-mentioned second indication information. The first network device receives the second message from the second network device, locates based on the second indication information, and obtains a measurement result.

It should be understood that the positioning of the first network device based on the second indication information stored by the second network device is similar to the above S503, and will not be repeated here to avoid repetition.

Optionally, the above second indication information may also be sent in the form of a bitmap.

It should be understood that the second indication information may occupy M bits, where M is a positive integer greater than or equal to 1, and the M bits may be in one-to-one correspondence with at least one item of positioning capability information included in the second indication information. The value is used to indicate whether the terminal device supports the positioning capability. If the terminal device does not support the information of a certain positioning capability in the M positioning capabilities, the value of the bit corresponding to the information of the positioning capability can be "0". On the contrary, if the terminal device supports a certain positioning capability in the M positioning capabilities For capability information, the value of a bit corresponding to the positioning capability information may be "1". Optionally, the correspondence between the N positioning capabilities and the M bits may be preset by a protocol or indicated by a network device, which is not limited in this application.

Exemplarily, the second indication information includes DL-AoD positioning capability information, OTDOA positioning capability information, ECID positioning capability information, Multi-RTT positioning capability information, UL-AoA positioning capability information, UL-TDOA positioning capability information information, and DL-TDOA positioning capability information. It includes the information about the OTDOA positioning capability supported by the terminal equipment, the information about the ECID positioning capability and the information about the DL-TDOA positioning capability. The terminal device does not support DL-AoD positioning capability information, UL-AoA positioning capability information, UL-TDOA positioning capability information, and Multi-RTT positioning capability information. Then the second indication information can be sent in the form of "0110001", wherein the first "0" represents the information that the terminal device does not support the above-mentioned DL-AoD positioning capability, and the second "1" represents the above-mentioned OTDOA positioning capability supported by the terminal device The third "1" represents the information of the above-mentioned ECID positioning capability supported by the terminal device, the fourth "0" represents the information that the terminal device does not support the above-mentioned Multi-RTT positioning capability, and the fifth "0" represents the information of the terminal device Does not support the above UL-AoA positioning capability information, the sixth "0" represents the information that the terminal device does not support the above UL-TDOA positioning capability, and the seventh "1" represents the above DL-TDOA positioning capability information that the terminal device supports .

Optionally, the above "0" may also represent the positioning capability information supported by the terminal device, and "1" may represent the positioning capability information not supported by the terminal device, so the above second information may also be sent in the form of "1001110".

In addition, the above-mentioned second indication information may also be sent in a data packet or in other forms, which is not limited in this application.

In this embodiment of the application, the first network device may send a request message to the terminal device once to obtain information about all positioning capabilities supported by the terminal device, and the second network device requests the first network device for the above-mentioned terminal device In the case of location information, the first network device can directly obtain all positioning capabilities supported by the terminal device based on the second indication information stored in the second network device, and can learn based on information about all positioning capabilities supported by the terminal device Information about all positioning capabilities not supported by the terminal device. Alternatively, the first network device may also directly obtain information about the positioning capability supported by the terminal device and information about all positioning capabilities not supported by the terminal device from the second indication information, which solves the problem of storing information about the positioning capability of the terminal device. The problem of inaccuracy eliminates the need for the first network device to request location capability information from the terminal device, reduces signaling overhead and location delay, improves location efficiency, and improves service performance.

As an optional embodiment, the first network device may also autonomously record at least one positioning capability information of the requesting terminal device, and based on the self-recorded at least one positioning capability information of the requesting terminal device, and the terminal Location of the indication information reported by the device. That is, the first network device may send a request to the terminal device for information on at least one positioning capability of the terminal device (also referred to as a fourth request message), and autonomously record information on at least one positioning capability of the requesting terminal device . The terminal device receives the fourth request message, and sends third indication information to the first network device, where the third indication information includes the positioning capability supported by the terminal device in at least one positioning capability information indicated in the fourth request message Information. The first network device may receive the third indication information, and may send the location capability information recorded by it and the third indication information to the second network device for storage. The first network device can directly know which positioning capabilities of the terminal device it has requested based on the above-mentioned recorded positioning capability information and the third indication information stored by the second network device, and which of these positioning capabilities are terminal The positioning capabilities supported by the device.

FIG. 6 is a schematic flowchart of another information transmission method 600 provided by an embodiment of the present application. The method 600 may also be applicable to the system architecture 100 shown in FIG. 1 above, and may also be applicable to other architectures, which is not limited in this embodiment of the present application. As shown in FIG. 6, the method 600 includes the following features or steps:

S601. The first network device sends a fourth request message to the terminal device, where the fourth request message is used to request information about at least one positioning capability of the terminal device.

Exemplarily, the above-mentioned fourth request message may be an LPP message, such as an LPP request capabilities message, and the first network device may use the LPP request capabilities message to request information about at least one positioning capability of the above-mentioned terminal device.

It should be understood that the foregoing fourth request message may also be other messages, which are not limited in this application.

S602. The first network device records information about at least one positioning capability indicated in the fourth request message.

S603. The terminal device receives the fourth request message from the first network device, and sends third indication information to the first network device, where the third indication information is used to indicate at least one positioning capability indicated in the fourth request message Information about the positioning capabilities supported by the terminal device in the information.

Optionally, the terminal device may send the above-mentioned third indication information and information of at least one positioning capability indicated in the recorded above-mentioned fourth request message to the above-mentioned first network device through an LPP message, such as an LPP provide capabilities message.

S604. The first network device receives the third indication information from the terminal device, and sends the third indication information and at least one positioning capability information indicated in the recorded fourth request message to the second network device.

Exemplarily, the first network device may send the third indication information and at least one location capability information recorded in the fourth request message to the second network device through the nlmf_location_determine location_response message.

Optionally, similar to the above-mentioned S503, the first network device may locate based on the third indication information, obtain a positioning result, and send the measurement result to the above-mentioned second network device. In order to avoid repetition, it will not be done here repeat.

Exemplarily, the fourth request message is used to request OTDOA positioning capability information, ECID positioning capability information, and DL-TDOA positioning capability information of the terminal device. The third indication information is used to indicate that the OTDOA positioning capability information and the ECID positioning capability information indicated in the fourth request message are the positioning capability information supported by the terminal device. The first network device may select any positioning capability from the OTDOA positioning capability information and the ECID positioning capability information.

Optionally, the first network device may also determine at least one positioning capability indicated in the above-recorded fourth request message according to the third indication information and at least one location capability information indicated in the above-recorded fourth request message. Information about a positioning capability not supported by the terminal device in one piece of positioning capability information, and sending the information about the positioning capability not supported by the terminal device to the second network device.

Exemplarily, the first network device may use the OTDOA positioning capability information, the ECID positioning capability information supported by the terminal device, and the OTDOA positioning capability information, the ECID positioning capability information and the information indicated in the fourth request message recorded above. The DL-TDOA positioning capability information is determined to be the positioning capability information not supported by the above-mentioned terminal equipment.

S605. The second network device receives the third indication information from the first network device and at least one positioning capability information indicated in the recorded fourth request message, and stores the third indication information and the fourth request Information about at least one positioning capability indicated in the message.

S606. The above-mentioned second network device sends a third message to the above-mentioned first network device, the third message is used to request the location information of the above-mentioned terminal device from the first network device, and the third message includes the above-mentioned third indication information and records Information about at least one positioning capability indicated in the fourth request message above.

Optionally, the third message above may be an nlmf_location_determine location_requeset message, and the second network device may request the location information of the terminal device from the first network device through the nlmf_location_determine location_requeset message.

S607. The first network device receives the third message from the second network device, and locates based on the third indication information and at least one location capability information indicated in the recorded fourth request message.

Exemplarily, similar to the foregoing S503, the first network device may perform positioning based on the third indication information, and obtain a positioning result. To avoid repetition, details are not repeated here.

Optionally, after the first network device receives the third message from the second network device, the first network device may also send a re-request message to the terminal device, where the re-request message is used to request Information about at least one positioning capability other than the indicated at least one positioning capability.

Exemplarily, the first network device may also request information on at least one positioning capability other than the OTDOA positioning capability information, ECID positioning capability information, and DL-TDOA positioning capability information indicated in the fourth request message (such as DL-TDOA positioning capability information). -AoD positioning capability information, UL-AoA positioning capability information, UL-TDOA positioning capability information, and Multi-RTT positioning capability information).

Optionally, as above, the third indication information may be sent in a bitmap, data packet, or other forms, which is not limited in this application.

In the embodiment of the present application, the third indication information reported by the terminal device and the positioning capability information actively recorded by the first network device are stored in the above-mentioned second network device. When the first network device receives a request message from the second network device requesting the location information of the above-mentioned terminal device, the first network device may directly base on the stored third indication information and the location capability actively recorded by the first network device information, to clearly know the positioning capabilities of the terminal device requested by the first network device, and which of the requested positioning capabilities are the positioning capabilities supported by the terminal device, and then to know the positioning capabilities that the terminal device does not support in the positioning capabilities recorded by the first network device capability information. It solves the problem of inaccurate information storage of the positioning capability of the terminal device, avoids repeated requests for the above-recorded positioning capability information in the positioning management, reduces unnecessary interaction between the first network device and the terminal device, and reduces the cost of the terminal device. complexity, reducing signaling overhead and positioning delay, and improving service performance.

As an optional embodiment, the terminal device may also autonomously report the above indication information to the second network device. That is, the terminal device may send a fifth request message to the above-mentioned second network device, and the fifth request message is used to request registration of the terminal device, so the fifth request message may also be called a registration request message, and the fifth request message includes Fourth instruction information. The second network device receives the fifth request message, completes registration based on the fifth request message, and stores the fourth indication information, so that when requesting the location information of the terminal device from the first network device, the The fourth indication information is sent to the first network device, so that the first network device obtains information about the positioning capability of the terminal device based on the fourth indication information, and then performs different operations.

It should be understood that the fourth indication information may be the same as any one of the first indication information, the second indication information, or the third indication information in the foregoing embodiment, which is not limited in the present application.

The solution provided by the present application will be described in detail below by taking a case where the fourth indication information is the same as the second indication information in the foregoing embodiment as an example.

FIG. 7 shows another information transmission method 700 provided by the embodiment of the present application. The method 700 can also be applied to the system architecture 100 shown in FIG. 1 above, and can also be applied to other architectures. There is no limit to this. As shown in Figure 7, the method includes the following features or steps:

S701. The terminal device sends a fifth request message to the second network device, where the fifth request message is used to request registration of the terminal device, and the fifth request message includes the foregoing fourth indication information.

Exemplarily, the above-mentioned fifth request message may be a registration requests message, through which the first network device may request at least one positioning capability information of the terminal device.

S702. The second network device receives a fifth request message from the terminal device, completes registration of the terminal device according to the fifth request message, and stores the fourth indication information included in the fifth request message.

S703. The second network device sends a fourth message to the first network device, where the fourth message is used to request the location information of the terminal device from the first network device, and the fourth message includes the fourth indication information.

Optionally, the fourth message may be an nlmf_location_determine location_requeset message, and the second network device may request the location information of the terminal device from the first network device through the nlmf_location_determine location_requeset message.

S704. The first network device receives the fourth message from the second network device, performs positioning based on the fourth indication information, and obtains a positioning result.

It should be understood that, in the case that the fourth indication information is different from the second indication information, in addition to positioning based on the fourth indication information, the first network device may also send a re-request message to the terminal device to request that the fourth indication information is not Information about at least one positioning capability of the included terminal device.

As above, the fourth indication information may also be sent in the form of the aforementioned bitmap or data packet, which is not limited in the present application.

In this embodiment of the present application, the terminal device may send the foregoing fourth indication information to the second network device for storage through a fifth request message (ie, a registration request message). It is avoided that the first network device sends a request message requesting information about the positioning capability of the terminal device to the terminal device. Based on the fourth indication information stored by the second network device, the first network device can clearly know the location capability information of the terminal device, so as to solve the problem of inaccurate storage of the location capability information of the terminal device and reduce signaling overhead and positioning delay, thereby improving service performance.

It should be understood that the first network device may learn the location capability of the terminal device it has requested according to the above indication information (for example, the first indication information, the second indication information, the third indication information, or the fourth indication information), and the request Information about the positioning capability supported by the terminal device in the requested positioning capability, or the positioning capability not supported by the terminal device in the requested positioning capability.

Exemplarily, the first network device learns that the positioning capabilities of the terminal device it has requested include OTDOA positioning capabilities, ECID positioning capabilities, and DL-TDOA positioning capabilities, and the ECID positioning capabilities and OTDOA positioning capabilities in the requested positioning capabilities are The positioning capability supported by the terminal device, and/or information that the DL-TDOA positioning capability in the requested positioning capability is a positioning capability not supported by the terminal device.

Optionally, the first network device may also obtain the positioning capability of the terminal device according to the positioning capability information in the above indication information (the first indication information, the second indication information, the third indication information, or the fourth indication information). At least one sub-capability item of , here, the indication information may be the first indication information, the second indication information, the third indication information, or the fourth indication information.

Exemplarily, the first network device may obtain at least one subcapability item of the OTDOA positioning capability and at least one subcapability item of the ECID positioning capability according to the above indication information.

Exemplarily, the sub-capability items of the above-mentioned ECID positioning capability may include at least one of the following:

rsrpSup, used to indicate whether the terminal device supports reference signal received power (reference signal received power, RSRP) measurement;

rsrqSup, used to indicate whether the terminal device supports reference signal received quality (reference signal received quality, RSRQ) measurement;

ueRxTxSup, used to indicate whether the above terminal device supports delay Rx-Tx measurement;

nrsrpSup, used to indicate whether the above terminal device supports narrowband reference signal received power (narrowband reference signal received power, NRSRP) measurement;

nrsrqSup, used to indicate whether the terminal device supports narrowband reference signal received quality (narrowband reference signal received quality, NRSRQ) measurement;

periodicReporting, used to indicate whether the above-mentioned terminal device supports periodic reporting;

triggeredReporting, used to indicate whether the above-mentioned terminal device supports cell change reporting; or,

idleStateForMeasurements is used to indicate whether the above-mentioned terminal equipment needs to be idle to perform E-CID measurement.

The sub-capability items of the above-mentioned OTDOA positioning capability may include at least one of the following:

SupportedBandEUTRA, the above-mentioned terminal equipment is a list of frequency bands that support reference signal time difference (reference signal time difference, RSTD) measurement;

interFreqRSTDmeasurement, whether the above-mentioned terminal equipment supports inter-frequency reference signal time difference measurement;

additionalNeighbourCellInfoList, whether the above-mentioned terminal devices support the reporting of measurement results of super-24 neighboring cells;

tp-separation-via-muting, whether the above terminal device supports RSTD measurements for cells with associated transmission points (e.g. remote radio heads) within the coverage of the cell;

additional-prs-config, whether the above-mentioned terminal equipment supports other positioning reference signal (positioning reference signal, PRS) configuration;

prs-based-tbs, whether the above-mentioned terminal equipment only supports RSTD measurement of PRS TP;

additionalPathsReport, whether the above-mentioned terminal equipment supports reporting the timing information of the RSTD reference and the additional detection path of each neighboring cell;

maxSupportedPrsBandwidth, the maximum PRS bandwidth supported by the above-mentioned terminal equipment;

prsOccGroup, whether the above-mentioned terminal equipment supports PRS occasion group;

prsFrequencyHopping, whether the above-mentioned terminal equipment supports frequency hopping in PRS occasions;

maxSupportedPrsConfigs, the above-mentioned terminal equipment supports the maximum number of PRS configured in each cell;

periodicReporting, whether the above-mentioned terminal equipment supports periodic reporting of RSTD measurements;

multiPrbNprs, whether the above-mentioned terminal device supports configuring NPRS in multiple resource blocks;

idleStateForMeasurements, whether the above-mentioned terminal equipment needs to be idle to perform RSTD measurement;

numberOfRXantennas, the number of UE downlink receiving antennas that the above-mentioned terminal equipment supports RSTD measurement;

motionMeasurements, whether the above terminal device supports reporting motion measurements in the OTDOA signal measurement information; or,

interRAT-RSTDmeasurement, whether the above terminal device supports inter-system RSTD measurement.

It should be understood that the first network device in the embodiment of the present application may be the above-mentioned location management function LMF device, and the second network device may be the above-mentioned access and mobility management function AMF device. In addition, the above-mentioned first network device The above-mentioned second network device may also be other devices, which is not limited in this application.

It should be understood that the various steps in the foregoing embodiments may also be coupled to each other, which is not limited in the present application. Moreover, the serial 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, and should not constitute any limitation on the implementation process of the embodiment of the present application.

The information transmission method of the embodiment of the present application is described in detail above with reference to FIG. 1 to FIG. 7 , and the communication device of the embodiment of the present application will be described in detail below in conjunction with FIG. 8 to FIG. 12 .

FIG. 8 shows a communication apparatus 800 provided by an embodiment of the present application. The terminal device 800 includes: a receiving module 801 and a sending module 802 .

Wherein, the receiving module 801 is configured to: receive a first request message from the first network device, and the first request message is used to request at least one location capability information of the terminal device; the sending module 802 is configured to: send the first request message to the first The network device sends first indication information, where the first indication information includes information about at least one positioning capability indicated in the first request message and information about at least one positioning capability not indicated in the first request message.

Optionally, the at least one positioning capability information indicated in the first request message includes at least one of the following: information about the positioning capability supported by the terminal device in the at least one positioning capability information indicated in the first request message ; Information about a positioning capability not supported by the terminal device in at least one positioning capability information indicated in the first request message.

Optionally, the at least one positioning capability information not indicated in the first request message includes at least one of the following: positioning capability information supported by the terminal device in the at least one positioning capability information indicated in the history request message; Information about a positioning capability that is not supported by the above-mentioned terminal device in at least one positioning capability information indicated in the history request message.

Optionally, the above-mentioned first indication information is sent in the form of a bitmap.

Optionally, the receiving module 801 is configured to: receive a second request message from the first network device, where the second request message is used to request at least one positioning capability other than the first indication information of the terminal device Information.

Optionally, the above-mentioned first request message includes fifth indication information, and the fifth indication information is used to instruct the above-mentioned terminal device to report at least one positioning capability information indicated in the above-mentioned first request message, and the above-mentioned first request message Information about at least one positioning capability not indicated in .

It should be understood that the apparatus 800 here is embodied in the form of functional modules. The term "module" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor, or a group processor, etc.) and memory, incorporated logic, and/or other suitable components to support the described functionality. In an optional example, those skilled in the art can understand that the apparatus 800 may specifically be the terminal device in the above embodiment, or the functions of the terminal device in the above embodiment may be integrated in the apparatus 800, and the apparatus 800 may be used to execute In order to avoid repetition, the procedures and/or steps corresponding to the terminal device in the foregoing method embodiments are not repeated here.

The above-mentioned apparatus 800 has the function of implementing corresponding steps executed by the terminal device in the above-mentioned method; the above-mentioned functions can be realized by hardware, or can be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions.

In the embodiment of the present application, the device 800 in FIG. 8 may also be a chip or a chip system, for example: a system on chip (system on chip, SoC).

FIG. 9 shows a communication device 900 provided by an embodiment of the present application. The terminal device 900 includes: a sending module 901 and a receiving module 902 .

Wherein, the sending module 901 is configured to: send a first request message to the terminal device, where the first request message is used to request information on at least one positioning capability of the terminal device; the receiving module 902 is configured to: receive the first request message from the terminal device Indication information, where the first indication information includes at least one positioning capability information indicated in the first request message, and at least one positioning capability information not indicated in the first request message; the sending module 901 is used to : Send the first indication information to the second network device.

Optionally, the foregoing apparatus 900 further includes: a processing module 903 configured to: receive a first message from the foregoing second network device, where the first message is used to request the foregoing first network device for location information of the foregoing terminal device, the first message A message includes the first indication information; and a second request message is sent to the terminal device, where the second request message is used to request at least one positioning capability information other than the first indication information.

Optionally, the above-mentioned first request message includes fifth indication information, and the fifth indication information is used to instruct the above-mentioned terminal device to report at least one positioning capability information indicated in the first request message, and the above-mentioned first request message Information about at least one positioning capability not indicated in the message. The processing module 903 is configured to: request the location information of the terminal device, the first message includes the first indication information; send a second request message to the terminal device, the second request message is used to request the first indication information Information about at least one positioning capability other than .

Optionally, the above-mentioned first request message includes fifth indication information, and the fifth indication information is used to instruct the terminal device to report at least one location capability information indicated in the above-mentioned first request message, and the above-mentioned first request message Information about at least one positioning capability not indicated in the message.

It should be understood that the apparatus 900 here is embodied in the form of functional modules. The term "module" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor, or a group processor, etc.) and memory, incorporated logic, and/or other suitable components to support the described functionality. In an optional example, those skilled in the art can understand that the apparatus 900 may specifically be the first network device in the foregoing embodiment, or the functions of the first network in the foregoing embodiment may be integrated in the apparatus 900, and the apparatus 900 may To avoid repetition, the procedures and/or steps corresponding to the first network device in the foregoing method embodiments are not repeated here.

The above-mentioned apparatus 900 has the function of implementing the corresponding steps performed by the first network device in the above-mentioned method; the above-mentioned functions can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions.

In the embodiment of the present application, the device 900 in FIG. 9 may also be a chip or a chip system, for example: a system on chip (system on chip, SoC).

FIG. 10 shows a communication apparatus 1000 provided by an embodiment of the present application. The terminal device 1000 includes: a receiving module 1001 and a sending module 1002 .

Wherein, the receiving module 1001 is configured to: receive a third request message from the first network device, and the third request message is used to request information on all positioning capabilities of the above-mentioned terminal device; the sending module 1002 is configured to: send the above-mentioned first network device Sending second indication information, where the second indication information includes all positioning capability information indicated in the third request message.

Optionally, the information of all positioning capabilities indicated in the third request message includes information of all positioning capabilities supported by the terminal device, and/or information of all positioning capabilities not supported by the terminal device.

Optionally, the above-mentioned information about all positioning capabilities of the terminal device includes at least one of the following: whether it supports the positioning capability of the Long Term Evolution Positioning Protocol (LPP) segment, information about the observed time difference of arrival (OTDOA) positioning capability, and enhanced cell identification (ECID) positioning capability Information on downlink time difference of arrival (DL-TDOA) positioning capability, downlink angle-of-departure (DL-AoD) positioning capability information, uplink angle of arrival (uplink angle of arrival, UL-AoA) positioning capability information, information about uplink time difference of arrival (UL-TDOA) positioning capability, and information about multiple round trip time (multi-round trip time, Multi-RTT) positioning capability; assisted global navigation satellite system (assisted Global navigation satellite system (A-GNSS) positioning capability information, sensor (sensor) positioning capability information, or terrestrial beacon system (terrestrial beacon system, TBS) positioning capability information.

It should be understood that the apparatus 1000 here is embodied in the form of functional modules. The term "module" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor, or a group processor, etc.) and memory, incorporated logic, and/or other suitable components to support the described functionality. In an optional example, those skilled in the art can understand that the device 1000 can be specifically the terminal device in the above embodiment, or the functions of the terminal device in the above embodiment can be integrated in the device 1000, and the device 1000 can be used to execute In order to avoid repetition, the procedures and/or steps corresponding to the terminal device in the foregoing method embodiments are not repeated here.

The above-mentioned apparatus 1000 has the function of implementing the corresponding steps executed by the terminal device in the above-mentioned method; the above-mentioned functions can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions.

In the embodiment of the present application, the device 1000 in FIG. 10 may also be a chip or a chip system, for example: a system on chip (system on chip, SoC).

Fig. 11 shows a communication device 1100 provided by an embodiment of the present application. The terminal device 1100 includes: a sending module 1101 and a receiving module 1102.

Wherein, the sending module 1101 is configured to: send a third request message to the terminal device, where the third request message is used to request information on all positioning capabilities of the terminal device; the receiving module 1102 is configured to: receive information from the above-mentioned terminal device Second indication information, where the second indication information includes information on all positioning capabilities indicated in the third request message; the sending module 1101 is configured to: send the second indication information to the second network device.

Optionally, the information about all the positioning capabilities of the above-mentioned terminal equipment includes at least one of the following: information about whether to support the positioning capabilities of the Long Term Evolution Positioning Protocol (LPP) segment, and information about the observed time difference of arrival (OTDOA) positioning capabilities , enhanced cell-ID (ECID) positioning capability information, downlink time difference of arrival (DL-TDOA) positioning capability information, downlink angle-of-departure (DL-TDOA) positioning capability information, downlink angle-of-departure (DL- AoD) positioning capability information, uplink angle of arrival (uplink angle of arrival, UL-AoA) positioning capability information, uplink time difference of arrival (uplink time difference of arrival, UL-TDOA) positioning capability information, multiple round-trip time (multi -round trip time, Multi-RTT) positioning capability information, assisted global navigation satellite system (assisted global navigation satellite system, A-GNSS) positioning capability information, sensor (sensor) positioning capability information, or ground beacon system ( terrestrial beacon system (TBS) positioning capability information.

It should be understood that the apparatus 1100 here is embodied in the form of functional modules. The term "module" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor, or a group processor, etc.) and memory, incorporated logic, and/or other suitable components to support the described functionality. In an optional example, those skilled in the art can understand that the apparatus 1100 may specifically be the first network device in the foregoing embodiments, or the functions of the first network in the foregoing embodiments may be integrated in the apparatus 1100, and the apparatus 1100 may To avoid repetition, the procedures and/or steps corresponding to the first network device in the foregoing method embodiments are not repeated here.

The above-mentioned apparatus 1100 has the function of realizing the corresponding steps performed by the first network device in the above method; the above-mentioned functions can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions.

In the embodiment of the present application, the device 1100 in FIG. 11 may also be a chip or a chip system, for example: a system on chip (system on chip, SoC).

FIG. 12 shows another communication device 1200 provided by the embodiment of the present application. The device 1200 includes: a processor 1201 , a memory 1202 , a communication interface 1203 and a bus 1204 . Wherein, the memory 1202 is used to store instructions, and the processor 1201 is used to execute the instructions stored in the memory 1202 . The processor 1201 , the memory 1202 and the communication interface 1203 are connected to each other through the bus 1204 .

In the first implementation manner, the apparatus 1200 may specifically be the terminal device in the method 300 or the method 400 in the above-mentioned embodiment, wherein the processor 1201 is configured to: receive a first request message from the first network device, the first request The message is used to request information about at least one positioning capability of the terminal device; sending first indication information to the first network device, where the first indication information includes information about at least one positioning capability indicated in the first request message, and information about at least one positioning capability not indicated in the above first request message.

In the second implementation manner, the apparatus 1200 may specifically be the first network device in the method 300 or the method 400 of the above-mentioned embodiment, wherein the processor 1201 is configured to: send a first request message to the terminal device, and the first request message Information for requesting at least one positioning capability of the terminal device; receiving first indication information from the terminal device, where the first indication information includes at least one positioning capability information indicated in the first request message, and the above-mentioned Information about at least one positioning capability not indicated in the first request message; sending the first indication information to the second network device.

In a third implementation manner, the apparatus 1200 may specifically be the terminal device in the method 500 of the above-mentioned embodiment, wherein the processor 1201 is configured to: receive a third request message from the first network device, and the third request message is used to requesting information on all positioning capabilities of the terminal device; sending second indication information to the first network device, where the second indication information includes information on all positioning capabilities indicated in the third request message.

In a fourth implementation manner, the apparatus 1200 may specifically be the first network device in the method 500 of the above-mentioned embodiment, wherein the processor 1201 is configured to: send a third request message to the terminal device, where the third request message is used to request Information about all positioning capabilities of the terminal device; receiving second indication information from the terminal device, where the second indication information includes information about all positioning capabilities indicated in the third request message; sending the second indication information to the second network device 2. Instructions.

It should be understood that the apparatus 1200 may specifically be the terminal device or the first network device in the foregoing embodiments, or, the functions of the terminal device or the first network device in the foregoing embodiments may be integrated into the apparatus 1200, and the apparatus 1200 may be used to perform the above-mentioned Each step and/or process corresponding to the terminal device or the first network device in the method embodiment.

Optionally, the memory 1202 may include a read-only memory and a random access memory, and provides instructions and data to the processor 1201 . A portion of memory 1202 may also include non-volatile random access memory. For example, memory 1202 may also store device type information. The processor 1201 may be configured to execute instructions stored in the memory, and when the processor executes the instructions, the processor 1201 may execute various steps and/or processes corresponding to the encoding end or the decoding end in the above method embodiments.

It should be understood that in the embodiment of the present application, the processor may be a central processing unit (Central Processing Unit, CPU), and the processor may also be other general processors, digital signal processors (DSP), application specific integrated circuits (ASIC ), field programmable gate array (FPGA) 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.

In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor executes the instructions in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, no detailed description is given here.

The embodiment of the present application also provides an information transmission system, and the system includes: a terminal device, a first network device, and a second network device.

Wherein, the above-mentioned first network device is used to: send a first request message to the terminal device, and the first request message is used to request information about at least one positioning capability of the above-mentioned terminal device; the above-mentioned terminal device is used to: receive information from the above-mentioned first A first request message from a network device, sending first indication information to the first network device, where the first indication information includes at least one positioning capability information indicated in the first request message, and information not included in the first request message Information indicating at least one positioning capability; the above-mentioned first network device is configured to: receive the first indication information from the above-mentioned terminal device; send the first indication information to the above-mentioned second network device; the above-mentioned second network device It is configured to: receive first indication information from the first network device, and store the first indication information.

Optionally, at least one item of positioning capability information not indicated in the first request message includes at least one of the following:

The positioning capability information supported by the terminal device in the at least one positioning capability information not indicated in the historical request message; the positioning capability information not supported by the terminal device in the at least one positioning capability information not indicated in the historical message.

Optionally, the second network device is configured to: send a first message to the first network device, the first message is used to request the location information of the terminal device from the first network device, and the first message includes the First indication information: the above-mentioned first network device is used to: receive the above-mentioned first message from the above-mentioned second network device, and send a second request message to the above-mentioned terminal device, and the second request message is used to request all the information of the above-mentioned terminal device at least one item of positioning capability information other than the first indication information; the terminal device is configured to: receive the second request message from the first network device.

The embodiment of the present application also provides another information transmission system, which includes: a terminal device, a first network device, and a second network device.

Wherein, the above-mentioned first network device is used to: send a third request message to the terminal device, and the third request message is used to request information on all positioning capabilities of the above-mentioned terminal device; the above-mentioned terminal device is used to: receive information from the above-mentioned first network device The third request message of the above-mentioned first network device, and send the second indication information to the above-mentioned first network device, the second indication information includes the information of all positioning capabilities indicated in the above-mentioned third request message; the above-mentioned first network device is used to: receive information from the above-mentioned The second instruction information of the terminal device, and send the second instruction information to the second network device; the second network device is used to: receive the second instruction information from the first network device, and store the second instruction information .

Optionally, the above second indication information is sent in the form of a bitmap.

Optionally, the information about all the positioning capabilities of the terminal device includes at least one of the following: information about whether to support the positioning capability of the Long Term Evolution Positioning Protocol LPP segment, information about the observed time difference of arrival (OTDOA) positioning capability , enhanced cell-ID (ECID) positioning capability information, downlink time difference of arrival (DL-TDOA) positioning capability information, downlink angle-of-departure (DL-TDOA) positioning capability information, downlink angle-of-departure (DL- AoD) positioning capability information, uplink angle of arrival (uplink angle of arrival, UL-AoA) positioning capability information, uplink time difference of arrival (uplink time difference of arrival, UL-TDOA) positioning capability information, multiple round-trip time (multi -round trip time, Multi-RTT) positioning capability information, assisted global navigation satellite system (assisted global navigation satellite system, A-GNSS) positioning capability information, sensor (sensor) positioning capability information, or ground beacon system ( terrestrial beacon system (TBS) positioning capability information.

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

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of 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.

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

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

An information transmission method, characterized in that, comprising:

The terminal device receives a first request message from the first network device, where the first request message is used to request information about at least one positioning capability of the terminal device;

The terminal device sends first indication information to the first network device, where the first indication information includes at least one positioning capability information indicated in the first request message, and information not included in the first request message Information indicating at least one positioning capability.
The method according to claim 1, wherein the at least one location capability information indicated in the first request message includes at least one of the following:

Information about the positioning capability supported by the terminal device in the at least one positioning capability information indicated in the first request message;

Information about a positioning capability not supported by the terminal device in at least one piece of positioning capability information indicated in the first request message.
The method according to claim 1 or 2, wherein the at least one positioning capability information not indicated in the first request message includes at least one of the following:

Positioning capability information supported by the terminal device in at least one positioning capability information indicated in the history request message;

Information about a positioning capability not supported by the terminal device in at least one piece of positioning capability information indicated in the history request message.
The method according to any one of claims 1 to 3, wherein the first indication information is sent in the form of a bitmap.
The method according to any one of claims 1 to 4, wherein the method further comprises:

The terminal device receives a second request message from the first network device, where the second request message is used to request at least one item of positioning capability information of the terminal device other than the first indication information.
The method according to any one of claims 1 to 5, wherein the first request message includes fifth indication information, and the fifth indication information is used to instruct the terminal device to report the first Information about at least one positioning capability indicated in the request message, and information about at least one positioning capability not indicated in the first request message.
An information transmission method, characterized in that, comprising:

The first network device sends a first request message to the terminal device, where the first request message is used to request information about at least one positioning capability of the terminal device;

The first network device receives first indication information from the terminal device, where the first indication information includes at least one positioning capability information indicated in the first request message, and the information in the first request message Information about at least one positioning capability not indicated;

The first network device sends the first indication information to the second network device.
The method according to claim 7, wherein the at least one location capability information indicated in the first request message includes at least one of the following:

The positioning capability information supported by the terminal device in at least one positioning capability information indicated in the first request message;

Information about a positioning capability not supported by the terminal device in at least one piece of positioning capability information indicated in the first request message.
The method according to claim 7 or 8, wherein the at least one positioning capability information not indicated in the first request message includes at least one of the following:

Positioning capability information supported by the terminal device in at least one positioning capability information not indicated in the history request message;

Information about a positioning capability not supported by the terminal device in the at least one positioning capability information not indicated in the history request message.
The method according to any one of claims 7 to 9, wherein the first indication information is sent in the form of a bitmap.
The method according to any one of claims 7 to 10, further comprising:

The first network device receives a first message from the second network device, the first message is used to request the location information of the terminal device from the first network device, and the first message includes the the first instruction message;

The first network device sends a second request message to the terminal device, where the second request message is used to request at least one item of positioning capability information other than the first indication information.
The method according to any one of claims 7 to 11, wherein the first request message includes fifth indication information, and the fifth indication information is used to instruct the terminal device to report the first Information about at least one positioning capability indicated in the request message, and information about at least one positioning capability not indicated in the first request message.
An information transmission method, characterized in that, comprising:

The first network device sends a first request message to the terminal device, where the first request message is used to request information about at least one positioning capability of the terminal device;

The terminal device receives a first request message from the first network device, and sends first indication information to the first network device, where the first indication information includes at least one item indicated in the first request message Positioning capability information, and at least one positioning capability information not indicated in the first request message;

receiving, by the first network device, the first indication information from the terminal device;

The first network device sends the first indication information to the second network device;

The second network device receives the first indication information from the first network device, and stores the first indication information.
The method according to claim 13, wherein the at least one location capability information indicated in the first request message includes at least one of the following:

Information about the positioning capability supported by the terminal device in the at least one positioning capability information indicated in the first request message;

Information about a positioning capability not supported by the terminal device in at least one piece of positioning capability information indicated in the first request message.
The method according to claim 13 or 14, wherein the at least one positioning capability information not indicated in the first request message includes at least one of the following:

Positioning capability information supported by the terminal device in at least one positioning capability information not indicated in the history request message;

Information about a positioning capability not supported by the terminal device in the at least one positioning capability information not indicated in the history message.
The method according to any one of claims 13 to 15, wherein the first indication information is sent in the form of a bitmap.
The method according to any one of claims 13 to 16, further comprising:

The second network device sends a first message to the first network device, the first message is used to request the location information of the terminal device from the first network device, and the first message includes the first - instruction information;

The first network device receives the first message from the second network device, and sends a second request message to the terminal device, where the second request message is used to request the first message of the terminal device - information indicating at least one positioning capability other than the information;

The terminal device receives the second request message from the first network device.
The method according to any one of claims 13 to 17, wherein the first request message includes fifth indication information, and the fifth indication information is used to instruct the terminal device to report the first Information about at least one positioning capability indicated in the request message, and information about at least one positioning capability not indicated in the first request message.
An information transmission method, characterized in that, comprising:

The terminal device receives a third request message from the first network device, where the third request message is used to request information about all positioning capabilities of the terminal device;

The terminal device sends second indication information to the first network device, where the second indication information includes information of all positioning capabilities indicated in the third request message.
The method according to claim 19, wherein the information on all positioning capabilities indicated in the third request message includes information on all positioning capabilities supported by the terminal device, and/or information on all positioning capabilities not supported by the terminal device Information about all location capabilities.
The method according to claim 19 or 20, wherein the second indication information is sent in the form of a bitmap.
The method according to any one of claims 19 to 21, wherein the information on all positioning capabilities of the terminal device includes at least one of the following:

Whether it supports the positioning capability information of the LPP segment of the long-term evolution positioning protocol, the information of the observed time difference of arrival OTDOA positioning capability, the information of the enhanced cell identification ECID positioning capability, the information of the downlink time difference of arrival DL-TDOA positioning capability, the downlink departure angle DL- AoD positioning capability information, uplink angle of arrival UL-AoA positioning capability information, uplink time difference of arrival UL-TDOA positioning capability information, and multiple round-trip time Multi-RTT positioning capability information; assist global navigation satellite system A-GNSS positioning information on the location capability of the sensor, information on the location capability of the sensor, or information on the location capability of the ground beacon system TBS.
An information transmission method, characterized in that, comprising:

The first network device sends a third request message to the terminal device, where the third request message is used to request information about all positioning capabilities of the terminal device;

The first network device receives second indication information from the terminal device, where the second indication information includes information on all positioning capabilities indicated in the third request message;

The first network device sends the second indication information to the second network device.
The method according to claim 23, wherein the information on all positioning capabilities indicated in the third request message includes information on all positioning capabilities supported by the terminal device, and/or information on all positioning capabilities not supported by the terminal device Information about all location capabilities.
The method according to claim 23 or 24, wherein the second indication information is sent in the form of a bitmap.
The method according to any one of claims 23 to 25, wherein the information on all positioning capabilities of the terminal device includes at least one of the following:

Whether it supports the positioning capability information of the LPP segment of the long-term evolution positioning protocol, the information of the observed time difference of arrival OTDOA positioning capability, the information of the enhanced cell identification ECID positioning capability, the information of the downlink time difference of arrival DL-TDOA positioning capability, the downlink departure angle DL- AoD positioning capability information, uplink angle of arrival UL-AoA positioning capability information, uplink time difference of arrival UL-TDOA positioning capability information, multiple round-trip time Multi-RTT positioning capability information, assisted global navigation satellite system A-GNSS positioning capability information, information on sensor positioning capabilities, or information on ground beacon system TBS positioning capabilities.
An information transmission method, characterized in that, comprising:

The first network device sends a third request message to the terminal device, where the third request message is used to request information about all positioning capabilities of the terminal device;

The terminal device receives the third request message from the first network device, and sends second indication information to the first network device, where the second indication information includes all positioning information indicated in the third request message information about capabilities;

The first network device receives second indication information from the terminal device, and sends the second indication information to a second network device;

The second network device receives the second indication information from the first network device, and stores the second indication information.
The method according to claim 27, wherein the information on all positioning capabilities indicated in the third request message includes information on all positioning capabilities supported by the terminal device, and/or information on all positioning capabilities not supported by the terminal device Information about all location capabilities.
The method according to claim 27 or 28, wherein the second indication information is sent in the form of a bitmap.
The method according to any one of claims 27 to 29, wherein the information on all positioning capabilities of the terminal device includes at least one of the following:

Whether to support the long-term evolution positioning protocol LPP segment positioning capability information, observed time difference of arrival OTDOA positioning capability information, enhanced cell identification ECID positioning capability information, downlink time difference of arrival DL-TDO) positioning capability information, downlink departure angle DL -AoD positioning capability information, uplink angle of arrival UL-AoA positioning capability information, uplink time difference of arrival UL-TDOA positioning capability information, multiple round-trip time Multi-RTT positioning capability information, assisted global navigation satellite system A-GNSS positioning information on the location capability of the sensor, information on the location capability of the sensor, or information on the location capability of the ground beacon system TBS.
A communication device, characterized in that it includes: a processor, the processor is coupled to a memory, the memory stores computer-executable instructions, and the processor executes the computer-executable instructions stored in the memory, so that the processor executes The method according to any one of claims 1 to 6, or performing the method according to any one of the methods according to any one of claims 19 to 22.
A communication device, characterized in that it includes: a processor, the processor is coupled to a memory, the memory stores computer-executable instructions, and the processor executes the computer-executable instructions stored in the memory, so that the processor executes A method as claimed in any one of claims 7 to 12, or performing a method as claimed in any one of claims 23 to 26.
A computer-readable storage medium, characterized in that it is used to store a computer program, the computer program comprising instructions for implementing the method according to any one of claims 1 to 6, or executing the method according to any one of claims 19 to 6 Instructions for the method of any one of 22.
A computer-readable storage medium, characterized in that it is used to store a computer program, the computer program comprising instructions for implementing the method according to any one of claims 7 to 12, or executing the method according to any one of claims 23 to 12 Instructions for the method of any one of 26.