WO2023168720A1

WO2023168720A1 - Distance measurement method and apparatus

Info

Publication number: WO2023168720A1
Application number: PCT/CN2022/080480
Authority: WO
Inventors: 陆伟
Original assignee: 北京小米移动软件有限公司
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2023-09-14
Also published as: CN117223300A

Abstract

Provided in the present disclosure are a distance measurement method and apparatus, and a distance measurement verification method and apparatus. The technical solution of the present disclosure comprises: an observer terminal sending to a target terminal a consulting message that comprises a measurement signal (S201); when the target terminal matches the observer terminal, feeding back to the observer terminal a consulting response message that comprises a feedback measurement signal (S202); and the observer terminal calculating the distance between the observer terminal and the target terminal on the basis of the measurement signal and the feedback measurement signal (S203). Therefore, the measurement of the distance between two terminals can be executed during a discovery process, such that the consumption of network resources can be reduced, and the power consumption of the terminals can be saved.

Description

Ranging methods and devices

Technical field

The present disclosure relates to the field of mobile communication technology, and in particular to a ranging method and device, and a ranging verification method and device.

Background technique

In a wireless communication system, in order to achieve communication between two terminals, it is necessary to measure the distance between the two terminals, that is, ranging. Currently, before ranging, a series of processes such as authentication and discovery need to be performed. When there are a large number of ranging requirements, this will consume a lot of network resources and cause great power consumption of the terminal.

Contents of the invention

The present disclosure proposes a ranging method and device, which can perform ranging during the discovery process, thereby reducing network resource consumption and saving terminal power consumption.

The present disclosure proposes a ranging verification method and device. The network device can verify the terminal to determine whether the terminal is allowed to perform ranging during the discovery process, and can also verify the terminal to determine whether the terminal is allowed to perform ranging during the discovery process. Perform ranging on another terminal.

A first aspect embodiment of the present disclosure provides a ranging method. The method is executed by a first terminal, where the first terminal is a terminal that initiates a discovery measurement combination process. The discovery measurement combination process is used for discovering Ranging is performed during the process, and the method includes: sending a query message to a second terminal, where the second terminal is a terminal that will be discovered to perform a discovery measurement combination process, and the query message is used to indicate that the second terminal The terminal performs discovery matching with the first terminal, and the inquiry message includes a measurement signal; receives an inquiry response message fed back by the second terminal in response to the inquiry message, wherein the inquiry response message is the response message of the second terminal sent when it is determined to match the first terminal, and the query response message includes a feedback measurement signal; and based on the measurement signal and the feedback measurement signal, calculate the distance to the second terminal .

Optionally, before sending the query message to the second terminal, the method further includes: performing integrity protection on the query message.

Optionally, the integrity protection of the query message includes: based on the security parameters received from the first proximity service discovery management function DDNMF network element of the first local public land mobile network HPLMN of the first terminal, calculate a message verification code; and appending the message verification code to the end of the query message to protect the integrity of the query message.

Optionally, the query response message is an integrity protected message, and the method further includes: verifying the integrity of the query response message; wherein based on the measurement signal and the feedback measurement signal, calculating and The distance between the second terminal includes: calculating the distance to the second terminal based on the measurement signal and the feedback measurement signal when the integrity of the query response message is successfully verified.

Optionally, the verifying the integrity of the inquiry response message includes: verifying the integrity of the inquiry response message based on security parameters received from the first DDNMF network element.

Optionally, the method further includes: sending a first discovery request message to the first DDNMF network element, where the first discovery request message is used to request execution of a discovery measurement combination process; receiving the first DDNMF network element to determine The first terminal is allowed to feedback a discovery response message when performing ranging on the second terminal during the discovery process, and the discovery response message includes parameter information for the discovery measurement combination process; wherein, The sending a query message to the second terminal includes: sending a query message to the second terminal if the first terminal is allowed to perform ranging on the second terminal during the discovery process.

Optionally, the first discovery request message includes a discovery measurement combination process indication, and the discovery measurement combination process indication is used to request verification whether the first terminal is allowed to perform ranging on the second terminal during the discovery process. .

An embodiment of the second aspect of the present disclosure provides a ranging method. The method is executed by a second terminal, where the second terminal is a terminal that will be discovered to perform a discovery measurement combination process. The discovery measurement combination process is To perform ranging during the discovery process, the method includes: receiving a query message sent by a first terminal, where the first terminal is a terminal that initiates a discovery measurement combination process, and the query message is used to indicate that the second terminal The terminal performs discovery matching with the first terminal, and the query message includes a measurement signal; and when the second terminal determines that it matches the first terminal, feeds back a query response message to the first terminal , wherein the query response message includes a feedback measurement signal, wherein the measurement signal and the feedback measurement signal are used to determine the distance between the first terminal and the second terminal.

Optionally, the inquiry message is an integrity-protected message, and the method further includes: verifying the integrity of the inquiry message; wherein the feedback of an inquiry response message to the first terminal includes: after successful verification of the If the integrity of the query message is satisfied, the query response message is fed back to the first terminal.

Optionally, the verifying the integrity of the query message includes: verifying the security parameters received from a second proximity service discovery management function DDNMF network element of the second local public land mobile network HPLMN of the second terminal. The completeness of the inquiry message.

Optionally, before sending the inquiry response message to the first terminal, the method further includes: performing integrity protection on the inquiry response message.

Optionally, the method further includes: performing integrity protection on the query response message includes: calculating a message verification code based on the security parameters received from the second DDNMF network element; and converting the message verification code Appended to the end of the query response message to protect the integrity of the query response message.

Optionally, the method further includes: sending a second discovery request message to the second DDNMF network element, where the second discovery request message is used to request execution of a discovery measurement combination process; and receiving the second discovery request message from the second DDNMF network element. A discovery response message fed back by the element when it is determined that the second terminal is allowed to perform ranging during the discovery process, and the discovery response message includes parameter information for the discovery measurement combination process; wherein, the The first terminal feedback inquiry response message includes: when the second terminal determines that it matches the first terminal and the second terminal is allowed to perform ranging during the discovery process, send a message to the first terminal. Feedback solicitation response message.

Optionally, the second discovery request message includes a discovery measurement combination verification indication, and the discovery measurement combination process indication is used to request verification of whether the second terminal is allowed to perform ranging during the discovery process.

A third aspect embodiment of the present disclosure provides a ranging verification method, the method is executed by the first proximity service discovery management function DDNMF network element of the first local public land mobile network HPLMN of the first terminal, the method includes : Receive a first discovery request message sent by the first terminal, wherein the first discovery request message is used to request execution of a discovery measurement combination process and indicates that the first terminal sending the first discovery request message is to initiate discovery measurement combination. The terminal of the process, the discovery and measurement combination process is used to perform ranging during the discovery process; in response to the first discovery request message, a first discovery and measurement combination process verification request is sent to the ranging application server, and the ranging application The server is configured to verify whether the first terminal is allowed to perform ranging during the discovery process based on the first discovery measurement combination verification request; receive a verification result from the ranging application server, and indicate to the first terminal when the verification result If allowed to perform ranging during the discovery process, forward the first discovery request message to the second DDNMF network element of the second HPLMN of the second terminal, which is to be discovered for discovery measurement. The terminal of the combined process; receives the discovery response message fed back by the second DDNMF network element when it is determined that the first terminal is allowed to perform ranging on the second terminal during the discovery process, wherein the discovery response message including parameter information for the discovery measurement combination process; and sending the discovery response message to the first terminal.

Optionally, the parameter information includes security parameters used for integrity protection and/or verification of specified information.

Optionally, the first discovery request message includes a discovery measurement combination process indication, and the discovery measurement combination process indication is used to request verification of whether the first terminal is allowed to perform ranging during the discovery process and to verify that the first terminal is allowed to perform ranging during the discovery process. Whether the terminal is allowed to perform ranging on the second terminal during the discovery process.

A fourth aspect embodiment of the present disclosure provides a ranging verification method, the method is executed by the second proximity service discovery management function DDNMF network element of the second local public land mobile network HPLMN of the second terminal, the method includes : Receive a second discovery request message sent by the second terminal, wherein the second discovery request message is used to request execution of the discovery measurement combination process and indicates that the second terminal sending the second discovery request message is to be discovered for discovery. The terminal of the measurement combination process, the discovery measurement combination process is used to perform ranging during the discovery process; in response to the second discovery request message, a second discovery measurement combination process verification request is sent to the ranging application server, the measurement combination process is The distance application server verifies whether the second terminal is allowed to perform ranging during the discovery process to obtain a second verification result based on the second discovery measurement combination process verification request; receiving the second verification result from the ranging application server ; In the case where the second verification result indicates that the second terminal is allowed to perform ranging during the discovery process, generate second parameter information for the discovery measurement combination process of the second terminal; and include the A second discovery response message of the second parameter information is sent to the second terminal.

Optionally, the method further includes: receiving a first discovery request message forwarded by the first DDNMF network element of the first HPLMN of the first terminal, where the first discovery request message is used to request execution of the discovery measurement combination process and instruct sending The first terminal of the first discovery request message is the terminal that initiates the discovery and measurement combination process; in response to the first discovery request message, a third discovery and measurement combination process verification request is sent to the ranging application server. The distance application server verifies whether the first terminal is allowed to perform ranging on the second terminal during the discovery process to obtain the first verification result based on the third discovery measurement combination process verification request; receiving from the ranging application server The first verification result; generating a discovery measurement for the first terminal if the first verification result indicates that the first terminal is allowed to perform ranging on the second terminal during discovery. Combining the first parameter information of the process; and sending a first discovery response message including the first parameter information to the first DDNMF network element.

Optionally, the first parameter information and the second parameter information each include security parameters for integrity protection and/or verification of the specified information.

Optionally, the second discovery request message includes a second discovery measurement combination process indication, and the second discovery measurement combination process indication is used to request verification whether the second terminal is allowed to perform ranging during the discovery process.

Optionally, the first discovery request message includes a first discovery measurement combination process indication, and the first discovery measurement combination process indication is used to request verification whether the first terminal is allowed to perform the discovery process on the second The terminal performs ranging.

A fifth aspect embodiment of the present disclosure provides a ranging verification method, which method includes: receiving a first discovery measurement combination process verification sent by the first DDNMF network element of the first local public land mobile network HPLMN of the first terminal. request, wherein the first terminal is the terminal that initiates the discovery and measurement combination process, the discovery and measurement combination process is used to perform ranging during the discovery process, and the first discovery and measurement combination process verification request is used to request verification whether the all The first terminal performs ranging during the discovery process; verifies whether the first terminal is allowed to perform ranging during the discovery process to obtain an intermediate verification result; feeds back the intermediate verification result to the first DDNMF network element; receives The third discovery measurement combination process verification request sent by the second DDNMF network element of the second HPLMN of the second terminal, where the second terminal is a terminal that will be discovered to perform the discovery measurement combination process, and the third discovery measurement The combined process verification request is used to request verification whether the first terminal is allowed to perform ranging on the second terminal during the discovery process; verify whether the first terminal is allowed to perform ranging on the second terminal during the discovery process. to obtain the first verification result; and feedback the first verification result to the second DDNMF network element, and the second DDNMF network element indicates that the first terminal is allowed to be in the discovery process when the first verification result indicates When performing ranging on the second terminal, first parameter information for a discovery measurement combination process of the first terminal is generated.

Optionally, the method further includes: receiving a second discovery and measurement combination process verification request sent by the second DDNMF network element, where the second discovery and measurement combination process verification request is used to request verification of whether the second terminal is allowed. Perform ranging during the discovery process; verify whether the second terminal is allowed to perform ranging during the discovery process to obtain a second verification result; and feed back the second verification result to the second DDNMF network element, The second DDNMF network element generates second parameter information for the discovery measurement combination process of the second terminal when the second verification result indicates that the second terminal is allowed to perform ranging during the discovery process.

A sixth embodiment of the present disclosure provides a ranging device, applied to a first terminal, wherein the first terminal is a terminal that initiates a discovery measurement combination process, and the discovery measurement combination process is used to execute during the discovery process. Ranging, the device includes: a transceiver module, configured to: send a query message to a second terminal, where the second terminal is a terminal that will be discovered to perform a discovery measurement combination process, and the query message is used to indicate that the The second terminal performs discovery matching with the first terminal, and the inquiry message includes a measurement signal; and receives an inquiry response message fed back by the second terminal in response to the inquiry message, wherein the inquiry response message is the The second terminal sends it when it determines that it matches the first terminal, and the query response message includes a feedback measurement signal; and a processing module for calculating, based on the measurement signal and the feedback measurement signal, the distance between the second terminals.

A seventh embodiment of the present disclosure provides a ranging device applied to a second terminal, wherein the second terminal is a terminal to be discovered for performing a discovery measurement combination process, and the discovery measurement combination process is used to Ranging is performed during the discovery process, and the device includes: a transceiver module, configured to: receive a query message sent by a first terminal, where the first terminal is a terminal that initiates the discovery measurement combination process, and the query message is used to indicate The second terminal performs discovery matching with the first terminal, and the query message includes a measurement signal; when the second terminal determines that it matches the first terminal, feedback is provided to the first terminal A query response message, wherein the query response message includes a feedback measurement signal, wherein the measurement signal and the feedback measurement signal are used to determine the distance between the first terminal and the second terminal.

An eighth embodiment of the present disclosure provides a ranging verification device, which is applied to the first proximity service discovery management function DDNMF network element of the first local public land mobile network HPLMN of the first terminal. The device includes: a transceiver module For: receiving a first discovery request message sent by the first terminal, wherein the first discovery request message is used to request execution of a discovery measurement combination process and indicates that the first terminal sending the first discovery request message is to initiate discovery. The terminal of the measurement combination process, the discovery measurement combination process is used to perform ranging during the discovery process; in response to the first discovery request message, a first discovery measurement combination process verification request is sent to the ranging application server, the measurement combination process is The distance application server is configured to verify whether the first terminal is allowed to perform ranging during the discovery process based on the first discovery measurement combination verification request; receive a verification result from the ranging application server, and when the verification result indicates the first When a terminal is allowed to perform ranging during the discovery process, it forwards the first discovery request message to the second DDNMF network element of the second HPLMN of the second terminal, and the second terminal is to be discovered for performing A terminal that discovers a measurement combination process; receives a discovery response message fed back by the second DDNMF network element when it is determined that the first terminal is allowed to perform ranging on the second terminal during the discovery process, wherein the discovery The response message includes parameter information for the discovery measurement combination process; and the discovery response message is sent to the first terminal.

A ninth embodiment of the present disclosure provides a ranging verification device, which is applied to the second proximity service discovery management function DDNMF network element of the second local public land mobile network HPLMN of the second terminal. The device includes: transceiver module and processing module; the transceiver module is used to: receive a second discovery request message sent by the second terminal, wherein the second discovery request message is used to request execution of the discovery measurement combination process and instructs to send the second discovery request The second terminal of the message is a terminal that will be discovered to perform a discovery measurement combination process. The discovery measurement combination process is used to perform ranging during the discovery process; in response to the second discovery request message, send to the ranging application server a second discovery measurement combination process verification request, the ranging application server verifies whether the second terminal is allowed to perform ranging during the discovery process to obtain a second verification result based on the second discovery measurement combination process verification request; and from The ranging application server receives the second verification result. The processing module is configured to generate a second parameter for the discovery measurement combination process of the second terminal when the second verification result indicates that the second terminal is allowed to perform ranging during the discovery process. information. The transceiving module is also configured to send a second discovery response message including the second parameter information to the second terminal.

A tenth aspect embodiment of the present disclosure provides a ranging verification device. The device includes a transceiver module and a processing module; the transceiver module is used to receive the first DDNMF of the first local public land mobile network HPLMN of the first terminal. The first discovery measurement combination process verification request sent by the network element, wherein the first terminal is the terminal that initiates the discovery measurement combination process, the discovery measurement combination process is used to perform ranging during the discovery process, the first discovery measurement The combined process verification request is used to request verification whether the first terminal is allowed to perform ranging during the discovery process; the processing module is used to verify whether the first terminal is allowed to perform ranging during the discovery process to obtain an intermediate verification result; The transceiver module is also configured to feed back the intermediate verification result to the first DDNMF network element; receive a third discovery measurement combination process verification request sent by the second DDNMF network element of the second HPLMN of the second terminal, wherein, The second terminal is a terminal that will be discovered to perform a discovery measurement combination process. The third discovery measurement combination process verification request is used to request verification whether the first terminal is allowed to perform the discovery measurement combination process on the second terminal. Ranging; the processing module is also used to verify whether the first terminal is allowed to perform ranging on the second terminal during the discovery process to obtain a first verification result; and the transceiver module is also used to send the third A verification result is fed back to the second DDNMF network element. When the first verification result indicates that the first terminal is allowed to perform ranging on the second terminal during the discovery process, the second DDNMF network element First parameter information for the discovery measurement combination process of the first terminal is generated.

An eleventh aspect embodiment of the present disclosure provides a communication device, including: a transceiver; a memory; and a processor, respectively connected to the transceiver and the memory, configured to execute a computer executable program on the memory. Instructions to control the wireless signal transmission and reception of the transceiver, and to implement the ranging method of the above-mentioned first aspect or second aspect embodiment or the ranging method of the third aspect embodiment, the fourth aspect embodiment or the fifth aspect embodiment. Authentication method.

A twelfth aspect embodiment of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the first aspect or the second aspect can be realized. The ranging method of the aspect embodiment or the ranging verification method of the third aspect embodiment, the fourth aspect embodiment or the fifth aspect embodiment.

Embodiments of the present disclosure provide a ranging method and device. The observing terminal (that is, the terminal that initiates the discovery and measurement combination process) sends a message to the target terminal (that is, the candidate terminal that participates in the discovery and measurement combination process, usually near the observation terminal). The query message includes the measurement signal. The target terminal feeds back the query response message including the feedback measurement signal to the observation terminal when it matches the observation terminal. The observation terminal can measure the signal and feed back the measurement signal to calculate the distance to the target terminal. Thus, ranging between two terminals can be performed during the discovery process, thereby reducing network resource consumption and saving terminal power consumption.

Embodiments of the present disclosure also provide a ranging verification method and device. The network device can verify the observing terminal to determine whether the observing terminal is allowed to perform ranging during the discovery process and whether it is allowed to perform ranging on the specific target terminal during the discovery process. Perform ranging. Additionally, the network device can authenticate the target terminal to determine whether the target terminal is allowed to perform ranging during the discovery process. Thus, it can be verified whether the terminal can perform the discovery measurement combination process.

Additional aspects and advantages of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.

Description of the drawings

The above and/or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

Figure 1 is a schematic diagram showing the direction of one terminal relative to another terminal;

Figure 2 is a schematic flowchart of a ranging method according to an embodiment of the present disclosure;

Figure 3 is a schematic flowchart of a ranging method according to an embodiment of the present disclosure;

Figure 4 is a schematic flowchart of a ranging method according to an embodiment of the present disclosure;

Figure 5 is a schematic flowchart of a ranging method according to an embodiment of the present disclosure;

Figure 6 is a schematic flowchart of a method for obtaining discovery measurement combination information according to an embodiment of the present disclosure;

Figure 7 is a schematic flowchart of a ranging method according to an embodiment of the present disclosure;

Figure 8 is a schematic flow chart of a ranging method according to an embodiment of the present disclosure;

Figure 9 is a schematic flowchart of a ranging method according to an embodiment of the present disclosure;

Figure 10 is a schematic flowchart of a ranging method according to an embodiment of the present disclosure;

Figure 11 is a schematic flowchart of a method for obtaining discovery measurement combination information according to an embodiment of the present disclosure;

Figure 12 is a schematic flow chart of a ranging method according to an embodiment of the present disclosure;

Figure 13 is a schematic flow chart of a ranging verification method according to an embodiment of the present disclosure;

Figure 14 is a schematic flow chart of a ranging verification method according to an embodiment of the present disclosure;

Figure 15 is a schematic flow chart of a ranging verification method according to an embodiment of the present disclosure;

Figure 16 is a schematic flow chart of a ranging verification method according to an embodiment of the present disclosure;

Figure 17 is a schematic flow chart of a ranging verification method according to an embodiment of the present disclosure;

Figure 18 is a schematic flowchart of a discovery measurement combination process according to an embodiment of the present disclosure;

Figure 19 is a block diagram of a ranging device according to an embodiment of the present disclosure;

Figure 20 is a block diagram of a ranging device according to an embodiment of the present disclosure;

Figure 21 is a block diagram of a ranging verification device according to an embodiment of the present disclosure;

Figure 22 is a block diagram of a ranging verification device according to an embodiment of the present disclosure;

Figure 23 is a block diagram of a ranging verification device according to an embodiment of the present disclosure;

Figure 24 is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

Figure 25 is a schematic structural diagram of a chip provided by an embodiment of the present disclosure.

Detailed ways

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present disclosure and are not to be construed as limitations of the present disclosure.

According to the 3GPP protocol, ranging-based services refer to services provided using the distance between two terminals and/or the direction of one terminal relative to the other terminal. In the three-dimensional case, the direction of one terminal relative to the other terminal includes the horizontal direction and the vertical direction, as shown in Figure 1. The first terminal has a reference plane and a reference direction. The horizontal direction (azimuth angle) of the second terminal relative to the first terminal is indicated by the angle between the reference direction and the projection of the line connecting the first terminal to the second terminal on the reference plane. The vertical direction of the second terminal relative to the first terminal is indicated by the angle in the horizontal plane. Some ranging-based services require only distance measurements, some ranging-based services require only direction measurements, and some ranging-based services require both distance and direction measurements.

For ranging-based services that only require distance measurement, Time of Flight (ToF) can be used to measure the path length between two terminals. Assume that radio frequency is used to obtain ToF. The first terminal sends a measurement signal to the second terminal. After receiving the measurement signal, the second terminal feeds back the measurement signal to the first terminal again. The first terminal determines a distance from the second terminal based on the flight time of the measurement signal. For example, assume that the time interval between the first terminal sending a measurement signal and receiving the measurement signal fed back by the second terminal is Δt ₂ , and the time interval between the second terminal receiving the measurement signal and feedbacking the measurement signal is Δt ₁ , the signal transmission The speed is C, then the distance between the first terminal and the second terminal is (Δt ₂ -Δt ₁ )×C/2.

Currently, in order to achieve communication between two terminals, a series of processes such as authentication and discovery need to be performed before ranging. When there are a large number of ranging requirements, this will consume a large amount of network resources and cause a huge loss of terminal functionality. Consumption. In order to reduce network resource consumption and reduce terminal power consumption, it is expected to simplify the required process as much as possible.

To this end, the present disclosure proposes a ranging method and device. The terminal can perform ranging during the discovery process, thereby reducing network resource consumption and saving the terminal's power consumption.

In addition, the present disclosure also proposes a ranging verification method and device. The network device can verify the terminal to determine whether the terminal is allowed to perform ranging during the discovery process, and can also verify the terminal to determine whether the terminal is allowed to perform ranging. Perform ranging on another terminal during discovery.

The above discovery and measurement combination process is used to perform ranging during the discovery process. In the following, for the sake of simplicity, the terminal that initiates the discovery and measurement combination process may be called an observing terminal, and the other terminal may be called a target terminal (i.e. candidate of terminals that will be discovered to participate in the discovery measurement combination process).

The distance measurement method and device, and the distance measurement verification method and device provided by this application will be introduced in detail below with reference to the accompanying drawings.

Figure 2 is a schematic flowchart of a ranging method according to an embodiment of the present disclosure. As shown in Figure 2, the method can be executed by an observation terminal and includes the following steps.

S201. Send a query message to the target terminal.

The query message is used to instruct the observation terminal and the target terminal to perform discovery matching and the query message includes a measurement signal to indicate that the observation terminal wishes to perform ranging during the discovery process.

S202: Receive the consultation response message fed back by the target terminal in response to the consultation message.

The query response message is sent when the target terminal determines that it matches the observing terminal, and the query response message includes the feedback measurement signal. In some embodiments, the query response message includes the feedback measurement signal and the time difference between receiving the query message and the feedback query response message. Optionally, the query response message may also include a discovery message type, which will be described in detail below.

After receiving the query message sent by the observation terminal, the target terminal can perform a discovery process to determine whether the target terminal matches the observation terminal. If the target terminal matches the observation terminal, it can send a query response message including the feedback measurement signal to the observation terminal.

In some embodiments, if the target terminal does not match the observing terminal, the target terminal may not send a query response message to the observing terminal, which means that communication between the target terminal and the observing terminal is impossible.

S203: Calculate the distance to the target terminal based on the measurement signal and the feedback measurement signal.

After receiving the inquiry response message including the feedback measurement signal, the observation terminal can calculate the distance between the observation terminal and the target terminal based on the measurement signal and the feedback measurement signal.

In some embodiments, if the observing terminal does not receive the inquiry response message sent by the target terminal within a preset time period, the observing terminal may determine that the target terminal does not match the observing terminal, and will not communicate with the target terminal.

According to the ranging method of the embodiment of the present disclosure, the observation terminal sends a query message including a measurement signal to the target terminal, and the target terminal feeds back a query response message including a feedback measurement signal to the observation terminal if it matches the observation terminal. The observation terminal can according to The measurement signal and the feedback measurement signal calculate the distance to the target terminal. Thus, ranging between two terminals can be performed during the discovery process, thereby reducing network resource consumption and saving terminal power consumption.

Figure 3 shows a schematic flowchart of a ranging method according to an embodiment of the present disclosure. As shown in Figure 3, the method can be executed by an observation terminal and includes the following steps.

S301, perform integrity protection on the consultation message.

In some embodiments, the above step S301 may include the following steps.

S3011, calculate the message verification code based on the security parameters received from the proximity service discovery management function (DDNMF, Direct Discovery Name Management Function) network element of the local public land mobile network (HPLMN, Home Public Land Mobile Network) of the observing terminal.

In this implementation, the observing terminal may calculate the message verification code based on the security parameters received from the DDNMF network element of the observing terminal's HPLMN. In an example, the security parameter may be a Discovery User Integrity Key (DUIK), and the observing terminal calculates a Message Integrity Code (MIC) based on the DUIK.

S3012: Attach the message verification code to the end of the consultation message to protect the integrity of the consultation message.

After the observing terminal calculates the MIC, it can append the MIC to the end of the query message to protect the integrity of the query message.

S302. Send an integrity-protected query message to the target terminal.

After performing integrity protection on the query message, the observing terminal sends the integrity-protected query message to the target terminal.

S303: Receive a query response message fed back by the target terminal in response to the integrity-protected query message.

After the target terminal receives the integrity-protected query message, the target terminal needs to perform integrity verification on the query message. Specifically, the target terminal can verify the query message based on DUIK. If the verification is passed, the target terminal will feedback the query to the observation terminal. response message, otherwise the consultation response message will not be fed back.

The query response message is sent when the target terminal determines that it matches the observing terminal, and the query response message includes the feedback measurement signal.

After the target terminal successfully verifies the integrity-protected query message, it can perform a discovery process to determine whether it matches the observing terminal. If the target terminal matches the observing terminal, it can send a query response message including the feedback measurement signal to the observing terminal.

In other embodiments, if the target terminal does not match the observing terminal, the target terminal may not send a query response message to the observing terminal, which means that communication between the target terminal and the observing terminal is impossible.

S304: Calculate the distance to the target terminal based on the measurement signal and the feedback measurement signal.

For the description and specific details of the above step S304, please refer to the relevant description and details of the above step S203.

According to the ranging method of the embodiment of the present disclosure, the observing terminal sends an integrity-protected query message to the target terminal after performing integrity protection on the query message. The target terminal feeds back to the observing terminal including feedback measurement if it matches the observing terminal. Signal query response message, the observing terminal can calculate the distance to the target terminal based on the measurement signal and feedback measurement signal in the query message. As a result, ranging between two terminals can be performed during the discovery process, thereby reducing network resource consumption and saving terminal power consumption. In addition, since the query message is an integrity-protected message, tampering of the query message can be avoided. , thereby improving the security of the consultation message.

Figure 4 shows a schematic flowchart of a ranging method according to an embodiment of the present disclosure. As shown in Figure 4, the method can be executed by an observation terminal and includes the following steps.

S401. Send a query message to the target terminal.

For the description and specific details of the above step S401, please refer to the relevant description and details of the above step S201.

S402: Receive the integrity-protected query response message fed back by the target terminal in response to the query message.

The integrity-protected query response message is sent when the target terminal determines that it matches the observing terminal, and the integrity-protected query response message includes a feedback measurement signal.

After receiving the query message sent by the observation terminal, the target terminal can perform a discovery process to determine whether the target terminal matches the observation terminal. If the target terminal matches the observation terminal, it can feed back a query response message including the feedback measurement signal to the observation terminal.

In order to prevent the query response message from being tampered with, the target terminal can send the integrity-protected query response message to the observation terminal after performing integrity protection on the query response message. Among them, the target terminal can calculate the message verification code based on the security parameters received from the DDNMF network element of the HPLMN of the target terminal, and append the message verification code to the end of the inquiry response message to protect the integrity of the inquiry response message. In an example, the security parameter may be DUIK, and the target terminal calculates the MIC based on the DUIK and appends the MIC to the end of the query response message.

S403. Verify the integrity of the integrity-protected query response message.

If the observing terminal receives an integrity-protected query response message, the observing terminal needs to perform integrity verification on the query response message.

In some embodiments, the above step S403 may include the following steps.

S4031: Verify the integrity of the integrity-protected query response message based on the security parameters received from the DDNMF network element of the HPLMN of the observing terminal.

In an example, the observing terminal may respond to the DUIK verification inquiry message received from the DDNMF network element.

S404: If the integrity-protected query response message is successfully verified, calculate the distance to the target terminal based on the measurement signal and the feedback measurement signal.

For the description and specific details of the above step S404, please refer to the relevant description and details of the above step S203.

According to the ranging method of the embodiment of the present disclosure, the observation terminal sends a query message including a measurement signal to the target terminal, and the target terminal feeds back a query response message including a feedback measurement signal to the observation terminal if it matches the observation terminal, and the query response message For integrity protected messages, the observing terminal can calculate the distance to the target terminal based on the measurement signal and the feedback measurement signal. Thus, ranging between two terminals can be performed during the discovery process, thereby reducing network resource consumption and saving terminal power consumption. In addition, since the query response message is an integrity-protected message, the query response message can be avoided. be tampered with, thereby improving the security of the query response message.

Figure 5 shows a schematic flowchart of a ranging method according to an embodiment of the present disclosure. As shown in Figure 5, the method can be executed by an observation terminal and includes the following steps.

S501, perform integrity protection on the consultation message.

For the description and specific details of the above step S501, please refer to the relevant description and details of the above step S301.

S502: Send an integrity-protected query message to the target terminal.

For the description and specific details of the above step S502, please refer to the relevant description and details of the above step S302.

S503: Receive an integrity-protected query response message fed back by the target terminal in response to the integrity-protected query message.

For the description and specific details of the above step S503, please refer to the relevant description and details of the above steps S303 and S402.

S504: Verify the integrity of the integrity-protected query response message.

For the description and specific details of the above step S504, please refer to the relevant description and details of the above step S403.

S505: If the integrity-protected query response message is successfully verified, calculate the distance to the target terminal based on the measurement signal and the feedback measurement signal.

For the description and specific details of the above step S505, please refer to the relevant description and details of the above step S404.

According to the ranging method of the embodiment of the present disclosure, the observing terminal sends an integrity-protected query message to the target terminal after performing integrity protection on the query message. The target terminal feeds back the integrity-protected query message to the observing terminal if it matches the observing terminal. In the protected query response message, the observing terminal can calculate the distance to the target terminal based on the measurement signal in the query message and the feedback measurement signal in the query response message. As a result, ranging between two terminals can be performed during the discovery process, thereby reducing network resource consumption and saving terminal power consumption. In addition, since both the query message and the query response message are integrity-protected messages, it can This prevents the inquiry message and the inquiry response message from being tampered with, thereby improving the security of the inquiry message and the inquiry response message.

Figure 6 shows a schematic flowchart of a ranging method according to an embodiment of the present disclosure. As shown in Figure 6, the method can be executed by an observation terminal and includes the following steps.

S601: Send a first discovery request message to the DDNMF network element of the HPLMN of the observing terminal.

The first discovery request message is used to request execution of the discovery measurement combination process.

The DDNMF network element of the HPLMN of the observing terminal is configured to send a first discovery measurement combination process verification request to the ranging application server in response to the first discovery request message, and the ranging application server is configured to verify whether it is allowed based on the first discovery measurement combination process verification request. The observing terminal performs ranging during the discovery process. When the verification result indicates that the observing terminal is allowed to perform ranging during the discovery process, the DDNMF network element of the HPLMN of the observing terminal forwards the first discovery request message to the HPLMN of the target terminal. DDNMF network element. The DDNMF network element of the HPLMN of the target terminal sends a third discovery measurement combination process verification request to the ranging application server in response to the first discovery request message. The ranging application server is used to verify the request based on the third discovery measurement combination process verification. Whether the observing terminal is allowed to perform ranging on the target terminal during the discovery process. If the verification result indicates that the observing terminal is allowed to perform ranging on the target terminal during the discovery process, the DDNMF network element of the target terminal's HPLMN generates a DDNMF network element for the observing terminal. Discover parameter information for the measurement combination process.

In some embodiments, the first discovery request message may include a discovery measurement combination process indication. The discovery measurement combination process indication is used to request verification that the observing terminal is allowed to perform ranging during the discovery process.

That is to say, the DDNMF network element of the HPLMN of the observing terminal can autonomously send a first discovery measurement combination process verification request to the ranging application server in response to the first discovery request message, that is, in response to any first discovery request message, the observing terminal The DDNMF network element of the HPLMN sends a first discovery measurement combination process verification request to the ranging application server to verify whether the observing terminal is allowed to perform ranging during the discovery process.

Alternatively, the DDNMF network element of the HPLMN of the observing terminal sends a first discovery and measurement combination process verification request to the ranging application server according to the discovery and measurement combination process indication in the first discovery request message, that is, only responds to the first discovery and measurement combination process indication including the discovery and measurement combination process indication. Upon receiving the discovery request message, the DDNMF network element of the HPLMN of the observing terminal sends a first discovery measurement combination process verification request to the ranging application server to verify whether the observing terminal is allowed to perform ranging during the discovery process.

In some embodiments, the first discovery request message further includes another discovery measurement combination process indication, which is used to request verification whether the observing terminal is allowed to perform ranging on the target terminal during the discovery process.

That is to say, the DDNMF network element of the target terminal's HPLMN can autonomously send a third discovery measurement combination process verification request to the ranging application server in response to the first discovery request message, that is, in response to any first discovery request message, the target terminal's The DDNMF network element of the HPLMN sends a discovery measurement combination process verification request to the ranging application server to verify whether the observing terminal is allowed to perform ranging on the target terminal during the discovery process.

Alternatively, the DDNMF network element of the HPLMN of the target terminal sends a third discovery measurement combination process verification request to the ranging application server according to another discovery measurement combination process instruction in the first discovery request message, that is, it only responds to the request including another discovery measurement combination. In the first discovery request message indicated by the process, the DDNMF network element of the HPLMN of the target terminal sends a third discovery measurement combination process verification request to the ranging application server to verify whether the observing terminal is allowed to perform ranging on the target terminal during the discovery process.

S602: Receive the discovery response message fed back by the DDNMF network element when it is determined that the observing terminal is allowed to perform ranging on the target terminal during the discovery process.

The discovery response message includes parameter information.

The DDNMF network element generates parameter information when the observing terminal is allowed to perform ranging on the target terminal during the discovery process based on the verification results, and can feed back the discovery response message including the parameter information to the observing terminal, so that the observing terminal can obtain the user information. To discover the parameter information of the measurement combination process.

S603: If the observing terminal is allowed to perform ranging on the target terminal during the discovery process, send a query message to the target terminal.

If the observing terminal obtains the parameter information used to discover the measurement combination process from the DDNMF network element, which means that the observing terminal is allowed to perform ranging on the target terminal during the discovery process, the observing terminal can send a query message to the target terminal.

For the description and specific details of the above step S603, please refer to the relevant description and details of the above step S201.

S604: Receive the consultation response message fed back by the target terminal in response to the consultation message.

For the description and specific details of the above step S604, please refer to the relevant description and details of the above step S202.

S605: Calculate the distance to the target terminal based on the measurement signal and the feedback measurement signal.

For the description and specific details of the above step S605, please refer to the relevant description and details of the above step S203.

It is worth noting that this embodiment is described based on the embodiment shown in Figure 2, that is, steps S601-S602 of this embodiment are combined with steps S201-S203 shown in Figure 2. However, it should be noted that this implementation The steps S601-S602 of the example can also be combined with the steps S301-S304 shown in Figure 3, combined with the steps S401-S404 shown in Figure 4, combined with the steps S501-S505 shown in Figure 5, and will not be repeated here. Prosecution.

According to the ranging method of the embodiment of the present disclosure, the observing terminal needs to be verified before sending a query message including a measurement signal to the target terminal. In the case where the observing terminal is verified to be allowed to perform ranging on the target terminal during the discovery process, the observing terminal needs to be verified. The target terminal sends a query message, and if the target terminal matches the observation terminal, it feeds back a query response message including a feedback measurement signal to the observation terminal. The observation terminal can calculate the distance to the target terminal based on the measurement signal and the feedback measurement signal. Thus, ranging between two terminals can be performed during the discovery process, thereby reducing network resource consumption and saving terminal power consumption.

Figure 7 is a schematic flowchart of a ranging method according to an embodiment of the present disclosure. As shown in Figure 7, the method can be executed by the target terminal and includes the following steps.

S701: Receive the inquiry message sent by the observation terminal.

S702: When the target terminal determines that it matches the observation terminal, feed back a query response message to the observation terminal.

The query response message includes a feedback measurement signal, and the measurement signal and the feedback measurement signal are used to determine the distance between the observation terminal and the target terminal.

After receiving the query message including the measurement signal sent by the observation terminal, the target terminal can perform a discovery process to determine whether the target terminal matches the observation terminal. If the target terminal matches the observation terminal, it can send a message including the feedback measurement signal to the observation terminal. Inquiry response message.

Figure 8 shows a schematic flowchart of a ranging method according to an embodiment of the present disclosure. As shown in Figure 8, the method can be executed by the target terminal and includes the following steps.

S801: Receive the integrity-protected query message sent by the observation terminal.

The observing terminal may, after performing integrity protection on the query message, send the integrity-protected query message to the target terminal. The integrity-protected solicitation message is used to instruct the observing terminal and the target terminal to perform discovery matching and includes a measurement signal to indicate that the observing terminal wishes to perform ranging during the discovery process.

Among them, the observing terminal can calculate the message verification code based on the security parameters received from the DDNMF network element of the HPLMN of the observing terminal, and append the message verification code to the end of the query message to protect the integrity of the query message. In an example, the security parameter may be DUIK, and the observing terminal calculates the MIC based on the DUIK, and appends the MIC to the end of the query message.

S802: Verify the integrity of the integrity-protected query message.

If the target terminal receives an integrity-protected query message, the target terminal needs to perform integrity verification on the query message.

In some embodiments, the above step S802 may include the following steps.

S8021: Verify the integrity of the integrity-protected query message based on the security parameters received from the DDNMF network element of the HPLMN of the target terminal.

In an example, the target terminal may verify the query message according to the DUIK received from the DDNMF network element.

S803: If the integrity of the integrity-protected query message is successfully verified, and the target terminal determines that it matches the observing terminal, a query response message is fed back to the observing terminal.

For the description and specific details of the above step S803, please refer to the relevant description and details of the above step S702.

According to the ranging method of the embodiment of the present disclosure, the observation terminal sends an integrity-protected query message to the target terminal after performing integrity protection on the query message. The target terminal feeds back to the observation terminal a feedback measurement signal including a feedback measurement signal if it matches the observation terminal. Inquiry response message, the observing terminal can calculate the distance to the target terminal based on the measurement signal and feedback measurement signal in the inquiry message. As a result, ranging between two terminals can be performed during the discovery process, thereby reducing network resource consumption and saving terminal power consumption. In addition, since the query message is an integrity-protected message, tampering of the query message can be avoided. , thereby improving the security of the consultation message.

Figure 9 shows a schematic flowchart of a ranging method according to an embodiment of the present disclosure. As shown in Figure 9, the method can be executed by the target terminal and includes the following steps.

S901: Receive the inquiry message sent by the observation terminal.

For the description and specific details of the above step S901, please refer to the relevant description and details of the above step S701.

S902: When the target terminal determines that it matches the observing terminal, perform integrity protection on the query response message.

The integrity-protected query response message includes a feedback measurement signal, and the measurement signal and the feedback measurement signal are used to determine the distance between the observation terminal and the target terminal.

After receiving the query message including the measurement signal sent by the observation terminal, the target terminal can perform a discovery process to determine whether the target terminal matches the observation terminal. If the target terminal matches the observation terminal, it can send a message including the feedback measurement signal to the observation terminal. Inquiry response message. In order to prevent the query response message from being tampered with, the target terminal can send the integrity-protected query response message to the observation terminal after performing integrity protection on the query response message.

In some embodiments, the above step S902 may include the following steps.

S9021: Calculate the message verification code based on the security parameters received from the DDNMF network element of the HPLMN of the target terminal.

In this implementation, the target terminal may calculate the message verification code based on the security parameters received from the DDNMF network element of the target terminal's HPLMN. In an example, the security parameter may be a Discovery User Integrity Key (DUIK), and the observing terminal calculates a Message Integrity Code (MIC) based on the DUIK.

S9022: Attach the message verification code to the end of the inquiry response message to protect the integrity of the inquiry response message.

After calculating the MIC, the target terminal can append the MIC to the end of the query response message to protect the integrity of the query response message.

S903: Send an integrity-protected query response message to the observation terminal.

After performing integrity protection on the inquiry response message, the target terminal sends the integrity-protected inquiry response message to the observation terminal.

After the observation terminal receives the integrity-protected inquiry response message, the observation terminal needs to perform integrity verification on the inquiry response message. Specifically, the observation terminal can calculate the distance between the observation terminal and the target terminal based on the measurement signal and the feedback measurement signal if the verification is passed based on the DUIK verification inquiry response message.

Figure 10 shows a schematic flowchart of a ranging method according to an embodiment of the present disclosure. As shown in Figure 10, the method can be executed by an observation terminal and includes the following steps.

S1001: Receive the integrity-protected query message sent by the observation terminal.

For the description and specific details of the above step S1001, please refer to the relevant description and details of the above step S801.

S1002. Verify the integrity of the integrity-protected query message.

For the description and specific details of the above step S1002, please refer to the relevant description and details of the above step S802.

S1003: If the integrity of the integrity-protected query message is successfully verified, and if the target terminal determines that it matches the observing terminal, integrity protection is performed on the query response message.

For the description and specific details of the above step S1003, please refer to the relevant description and details of the above step S902.

S1004. Send an integrity-protected query response message to the observation terminal.

For the description and specific details of the above step S1004, please refer to the relevant description and details of the above step S903.

Figure 11 shows a schematic flowchart of a ranging method according to an embodiment of the present disclosure. As shown in Figure 11, the method can be executed by a target terminal and includes the following steps.

S1101. Send a second discovery request message to the DDNMF network element of the target terminal's HPLMN.

The second discovery request message is used to request execution of the discovery measurement combination process.

The DDNMF network element is configured to send a second discovery measurement combination process verification request to the ranging application server in response to the second discovery request message. The ranging application server is configured to verify whether the target terminal is allowed in the discovery process based on the second discovery measurement combination process verification request. When the verification result indicates that the target terminal is allowed to perform ranging during the discovery process, the DDNMF network element generates parameter information for the discovery measurement combination process.

In some embodiments, the second discovery request message includes a discovery measurement combination process indication, and the discovery measurement combination process indication is used to request verification whether the target terminal is allowed to perform ranging during the discovery process.

That is to say, the DDNMF network element can autonomously send a second discovery measurement combination process verification request to the ranging application server in response to the second discovery request message. That is, in response to any second discovery request message, the DDNMF network element sends a second discovery measurement combination process verification request to the ranging application server. A second discovery measurement combination process verification request is sent to verify whether the target terminal is allowed to perform ranging during the discovery process.

Alternatively, the DDNMF network element sends a second discovery and measurement combination process verification request to the ranging application server according to the discovery and measurement combination process indication in the second discovery request message, that is, only responds to the second discovery request message including the discovery and measurement combination process indication, The DDNMF network element sends a second discovery measurement combination process verification request to the ranging application server to verify whether the target terminal is allowed to perform ranging during the discovery process.

S1102: Receive the discovery response message fed back by the DDNMF network element when it is determined that the target terminal is allowed to perform ranging during the discovery process.

The discovery response message includes parameter information.

The DDNMF network element generates parameter information when the target terminal is allowed to perform ranging during the discovery process based on the verification results, and can feed back a discovery response message including parameter information to the target terminal, so that the target terminal can obtain the measurement information used for discovery. Parameter information of the combined process.

S1103. Receive the inquiry message sent by the observation terminal.

For the description and specific details of the above step S1103, please refer to the relevant description and details of the above step S701.

S1104: When the target terminal determines that it matches the observing terminal and the target terminal is allowed to perform ranging during the discovery process, feed back a query response message to the observing terminal.

In some embodiments, if the target terminal matches the observing terminal but the target terminal is not allowed to perform ranging during the discovery process, the target terminal may send a solicitation response message that does not include the feedback measurement signal to the observing terminal to indicate that the target terminal cannot Participate in the discovery measurement portfolio process.

In some embodiments, if the observing terminal receives a solicitation response message that does not include a feedback measurement signal, the observing terminal needs to perform ranging on the target terminal after the discovery process is completed.

In other embodiments, if the observing terminal does not receive the query response message sent by the target terminal within a preset time period, the observing terminal may determine that the target terminal does not match the observing terminal, and will not communicate with the target terminal.

It is worth noting that this embodiment is described based on the embodiment shown in Figure 7, that is, steps S1101-S1102 of this embodiment are combined with steps S701-S703 shown in Figure 7. However, it should be noted that this implementation The steps S1101-S1102 of the example can also be combined with the steps S801-S803 shown in Figure 8, combined with the steps S901-S903 shown in Figure 9, combined with the steps S1001-S1004 shown in Figure 10, and will not be repeated here. Prosecution.

According to the ranging method of the embodiment of the present disclosure, the observing terminal sends a query message including a measurement signal to the target terminal, and the target terminal feeds back to the observing terminal including Feedback the query response message of the measurement signal, and the observation terminal can calculate the distance to the target terminal based on the measurement signal and the feedback measurement signal. Thus, ranging between two terminals can be performed during the discovery process, thereby reducing network resource consumption and saving terminal power consumption.

Figure 12 shows a schematic flowchart of a ranging method according to an embodiment of the present disclosure. As shown in Figure 12, the method can be executed by the observation terminal and the target terminal, and includes the following steps.

S1201. The observation terminal 1 sends a query message to the target terminal 2, the target terminal 3, the target terminal 4 and the target terminal 5 respectively. The query message includes the measurement signal. In some examples, in addition to measuring signals, the solicitation message may also include discovery message types and the like.

S1202. The target terminal matching the observation terminal 1 feeds back a query response message to the observation terminal 1. The query response message includes the feedback measurement signal and the time difference between receiving the query message and the feedback query response message. In some examples, the solicitation response message may also include a discovery message type and the like.

In the example shown in Figure 12, target terminal 2 and target terminal 3 match the observation terminal 1, then S1202 includes S1202a and S1202b.

In S1202a, the target terminal 2 feeds back a query response message including the feedback measurement signal and the time difference ΔT ₂₁ to the observation terminal 1 .

In S1202a, the target terminal 3 feeds back a query response message including the feedback measurement signal and the time difference ΔT ₃₁ to the observation terminal 1 .

S1203. The observation terminal 1 calculates the time difference between sending the inquiry message and receiving the inquiry response message based on the received inquiry response message, and calculates the time difference between the calculated time difference and the time difference contained in the inquiry response message and the target terminal that feeds back the inquiry response message. distance between.

In the example shown in Figure 12, the observation terminal 1 calculates the time difference between sending the inquiry message and receiving the inquiry response message fed back by the target terminal 2 as ΔT ₁₂ , from which the distance between the observation terminal 1 and the target terminal 2 can be calculated is (ΔT ₁₂ -ΔT ₂₁ ) x C/2; the time difference between the observation terminal 1 and the reception of the inquiry response message fed back by the target terminal 3 is ΔT ₁₃ , from which the observation terminal 1 and the target terminal can be calculated The distance between 3 is (ΔT ₁₃ –ΔT ₃₁ )x C/2.

Figure 13 shows a schematic flowchart of a ranging verification method according to an embodiment of the present disclosure. As shown in Figure 13, this method can be executed by a DDNMF network element observing the HPLMN of the terminal, and includes the following steps.

S1301. Receive the first discovery request message sent by the observation terminal.

The first discovery request message is used to request execution of the discovery measurement combination process and indicates that the terminal sending the first discovery request message is an observing terminal. That is, the DDNMF network element of the HPLMN of the observing terminal can learn the HPLMN of the observing terminal based on the received first discovery request message. The first discovery request message comes from the observing terminal.

S1302. In response to the first discovery request message, send a first discovery measurement combination process verification request to the ranging application server.

After receiving the first discovery request message, the DDNMF network element of the HPLMN of the observing terminal can send a first discovery and measurement combination process verification request to the ranging application server, so that the ranging application server will verify based on the first discovery and measurement combination verification request. Whether the observing terminal is allowed to perform ranging during discovery.

S1303, receive the verification result from the ranging application server, and forward the first discovery request message to the DDNMF network element of the target terminal's HPLMN if the verification result indicates that the observing terminal is allowed to perform ranging during the discovery process.

The DDNMF network element of the observing terminal's HPLMN receives the verification result from the ranging application server. If the verification result indicates that the observing terminal is allowed to perform ranging during the discovery process, the DDNMF network element of the observing terminal's HPLMN forwards the first discovery request message to The DDNMF network element of the target terminal's HPLMN.

S1304: Receive the discovery response message fed back by the DDNMF network element of the HPLMN of the target terminal when it is determined that the observing terminal is allowed to perform ranging on the target terminal during the discovery process.

After receiving the first discovery request message forwarded by the DDNMF network element of the HPLMN of the observing terminal, the DDNMF network element of the HPLMN of the target terminal will send a third discovery measurement combination process verification request to the ranging application server, so that the ranging application server will The verification request verifies whether the observing terminal is allowed to perform ranging on the target terminal during the discovery process based on the third discovery measurement combination process verification request. When the verification result fed back by the ranging application server indicates that the observing terminal is allowed to perform ranging on the target terminal during the discovery process, the DDNMF network element of the target terminal's HPLMN generates parameter information for the discovery measurement combination process of the observing terminal. The DDNMF network element of the HPLMN of the target terminal feeds back the discovery response message including the parameter information to the DDNMF network element of the HPLMN of the observing terminal.

In some embodiments, the first discovery request message forwarded by the DDNMF network element of the HPLMN of the observing terminal may include another discovery measurement combination process indication. Another discovery measurement combination process indication is used to request verification whether the observing terminal is allowed to perform ranging on the target terminal during the discovery process.

That is to say, the DDNMF network element of the target terminal's HPLMN can autonomously send a third discovery measurement combination process verification request to the ranging application server in response to the first discovery request message, that is, in response to any first discovery request message, the target terminal's The DDNMF network element of the HPLMN sends a third discovery measurement combination process verification request to the ranging application server to verify whether the observing terminal is allowed to perform ranging on the target terminal during the discovery process.

In some embodiments, the parameter information may include security parameters for integrity protection and/or verification of the specified information. For example, the parameter information includes security parameters used to protect the integrity of the query message, so that the observing terminal can protect the integrity of the query message based on the security parameters and then send it to the target terminal. For another example, the parameter information includes security parameters used for integrity verification of the query response message, so that after receiving the integrity-protected query response message, the observing terminal can perform integrity verification of the query response message based on the security parameters.

S1305: Send the discovery response message to the observation terminal.

According to the ranging verification method of this embodiment, the network device can verify the observing terminal to determine whether the observing terminal is allowed to perform ranging on the target terminal during the discovery process.

Figure 14 shows a schematic flowchart of a ranging verification method according to an embodiment of the present disclosure. As shown in Figure 14, this method can be executed by the DDNMF network element of the HPLMN of the target terminal, and includes the following steps.

S1401. Receive the second discovery request message sent by the target terminal.

The second discovery request message is used to request execution of the discovery measurement combination process and indicates that the terminal sending the second discovery request message is the target terminal. That is, the DDNMF network element of the HPLMN of the target terminal can learn the target terminal based on the received second discovery request message. The second discovery request message comes from the target terminal.

S1402. In response to the second discovery request message, send a second discovery measurement combination process verification request to the ranging application server.

After receiving the second discovery request message, the DDNMF network element of the HPLMN of the target terminal can send a second discovery and measurement combination process verification request to the ranging application server, so that the ranging application server will verify based on the second discovery and measurement combination verification request. Whether to allow the target terminal to perform ranging during discovery.

In some embodiments, the second discovery request message may include a discovery measurement combination process indication. The discovery measurement combination process indication is used to request verification whether the target terminal is allowed to perform ranging during the discovery process.

That is to say, the DDNMF network element of the target terminal's HPLMN can autonomously send a second discovery measurement combination process verification request to the ranging application server in response to the second discovery request message, that is, in response to any second discovery request message, the target terminal's The DDNMF network element of the HPLMN sends a second discovery measurement combination process verification request to the ranging application server to verify whether the target terminal is allowed to perform ranging during the discovery process.

Alternatively, the DDNMF network element of the target terminal's HPLMN sends a second discovery and measurement combination process verification request to the ranging application server according to the discovery and measurement combination process indication in the second discovery request message, that is, only responds to the first discovery and measurement combination process indication that includes the discovery and measurement combination process indication. In the second discovery request message, the DDNMF network element of the HPLMN of the target terminal sends a second discovery measurement combination process verification request to the ranging application server to verify whether the target terminal is allowed to perform ranging during the discovery process.

S1403. Receive a verification result indicating whether the target terminal is allowed to perform ranging during the discovery process from the ranging application server.

S1404: If the verification result indicates that the target terminal is allowed to perform ranging during the discovery process, generate second parameter information for the discovery measurement combination process of the target terminal.

When the verification result fed back by the ranging application server indicates that the target terminal is allowed to perform ranging during the discovery process, the DDNMF network element of the target terminal's HPLMN generates the second parameter information.

In some embodiments, the second parameter information may include security parameters for integrity protection and/or verification of the specified information. For example, the second parameter information includes security parameters used to protect the integrity of the query response message, so that the target terminal can perform integrity protection on the query response message based on the security parameters and then send it to the observation terminal. For another example, the second parameter information includes security parameters used for integrity verification of the query message, so that the target terminal can perform integrity verification of the query information based on the security parameters after receiving the integrity-protected query message.

S1405: Send the second discovery response message including the second parameter information to the target terminal.

The DDNMF network element of the HPLMN of the target terminal feeds back the second discovery response message including the second parameter information to the target terminal.

According to the ranging verification method of this embodiment, the network device can verify the target terminal to determine whether the target terminal is allowed to perform ranging during the discovery process.

Figure 15 shows a schematic flowchart of a ranging verification method according to an embodiment of the present disclosure. As shown in Figure 15, this method can be executed by the DDNMF network element of the target terminal's HPLMN, and includes the following steps.

S1501. Receive the second discovery request message sent by the target terminal.

S1502. In response to the second discovery request message, send a second discovery measurement combination process verification request to the ranging application server.

S1503. Receive a verification result indicating whether the target terminal is allowed to perform ranging during the discovery process from the ranging application server.

S1504: If the verification result indicates that the target terminal is allowed to perform ranging during the discovery process, generate second parameter information for the discovery measurement combination process of the target terminal.

S1505: Send the second discovery response message including the second parameter information to the target terminal.

For the description and specific details of the above steps S1501-S1505, please refer to the relevant description and details of the above steps S1401-S1405.

S1506: Receive the first discovery request message forwarded by the DDNMF network element of the HPLMN of the observing terminal.

The first discovery request message is used to request execution of the discovery measurement combination process and indicates that the terminal sending the first discovery request message is an observing terminal, that is, the DDNMF network element of the HPLMN of the target terminal can learn the target terminal based on the received first discovery request message. The first discovery request message comes from the observing terminal.

The first discovery request message is forwarded by the DDNMF network element of the HPLMN of the observing terminal to the DDNMF network element of the target terminal's HPLMN when the observing terminal is verified to be allowed to perform ranging during the discovery process.

S1507. In response to the first discovery request message, send a third discovery measurement combination process verification request to the ranging application server.

After receiving the first discovery request message, the DDNMF network element of the HPLMN of the target terminal can send a third discovery measurement combination process verification request to the ranging application server, so that the ranging application server will verify the request based on the third discovery measurement combination verification Whether the observing terminal is allowed to perform ranging on the target terminal during the discovery process to obtain the first verification result.

In some embodiments, the first discovery request message may include a discovery measurement combination process indication. The discovery measurement combination process indication is used to request verification whether the observing terminal is allowed to perform ranging on the target terminal during the discovery process.

Alternatively, the DDNMF network element of the HPLMN of the target terminal sends a third discovery and measurement combination process verification request to the ranging application server according to the discovery and measurement combination process indication in the first discovery request message, that is, only responds to the third discovery and measurement combination process indication including the discovery and measurement combination process indication. Upon receiving the discovery request message, the DDNMF network element of the HPLMN of the target terminal sends a third discovery measurement combination process verification request to the ranging application server to verify whether the observing terminal is allowed to perform ranging on the target terminal during the discovery process.

S1508: Receive a verification result from the ranging application server indicating whether the observing terminal is allowed to perform ranging on the target terminal during the discovery process.

S1509: If the verification result indicates that the observing terminal is allowed to perform ranging on the target terminal during the discovery process, generate first parameter information for the discovery measurement combination process of the observing target terminal.

The DDNMF network element of the HPLMN of the target terminal generates the first parameter information when the verification result fed back by the ranging application server indicates that the observing terminal is allowed to perform ranging on the target terminal during the discovery process.

In some embodiments, the first parameter information may also include security parameters used for integrity protection and/or verification of the specified information. For example, the first parameter information includes security parameters used to protect the integrity of the query message, so that the observing terminal can protect the integrity of the query message based on the security parameters and then send it to the target terminal. For another example, the first parameter information includes security parameters used to perform integrity verification on the query response message, so that after receiving the integrity-protected query response message, the observation terminal can perform integrity verification on the query response message based on the security parameters. verify.

S1510: Send the first discovery response message including the first parameter information to the DDNMF network element of the HPLMN of the observing terminal.

The DDNMF network element of the HPLMN of the target terminal feeds back the first discovery response message including the first parameter information to the DDNMF network element of the HPLMN of the observing terminal, and the DDNMF network element of the HPLMN of the observing terminal can feed back the first discovery response message to Observation terminal.

According to the ranging verification method of this embodiment, the network device can verify the target terminal to determine whether the target terminal is allowed to perform ranging during the discovery process, and verify the observing terminal to determine whether the observing terminal is allowed to perform ranging during the discovery process. Perform ranging on the target terminal.

Figure 16 shows a schematic flowchart of a ranging verification method according to an embodiment of the present disclosure. As shown in Figure 16, this method is used to verify the observation terminal, and the method may include the following steps.

S1601: Receive the first discovery measurement combination process verification request sent by the DDNMF network element of the HPLMN of the observing terminal.

The first discovery measurement combination process verification request is used to request verification whether the observation terminal is allowed to perform ranging during the discovery process.

The first discovery measurement combination process verification request is sent by the DDNMF network element of the HPLMN of the observing terminal based on the first discovery request message received from the observing terminal.

S1602. Verify whether the observation terminal is allowed to perform ranging during the discovery process to obtain intermediate verification results.

The ranging application server verifies whether the observing terminal is allowed to perform ranging during the discovery process in response to the first discovery measurement combination verification request.

S1603: Feed back the intermediate verification results to the DDNMF network element of the HPLMN of the observing terminal.

S1604: Receive the third discovery measurement combination process verification request sent by the DDNMF network element of the HPLMN of the target terminal.

Among them, the third discovery measurement combination process verification request is used to request verification whether the observing terminal is allowed to perform ranging on the target terminal during the discovery process.

The third discovery measurement combination process verification request is sent by the DDNMF network element of the HPLMN of the target terminal based on the first discovery request message received from the DDNMF network element of the HPLMN of the observing terminal. The first discovery request message is the DDNMF of the HPLMN of the observing terminal when the observing terminal is verified to be allowed to perform ranging during the discovery process (i.e., the intermediate verification result indicates that the observing terminal is permitted to perform ranging during the discovery process). The network element forwards the DDNMF network element of HPLMN to the target terminal.

S1605: Verify whether the observing terminal is allowed to perform ranging on the target terminal during the discovery process to obtain the first verification result.

The ranging application server verifies whether the observing terminal is allowed to perform ranging on the target terminal during the discovery process in response to the third discovery measurement combination verification request. If the target terminal is not verified to be allowed to perform ranging during the discovery process, the first verification result obtained by the ranging application server is that the observing terminal is not allowed to perform ranging on the target terminal during the discovery process. If the target terminal has been verified to be allowed to perform ranging during the discovery process, the first verification result obtained by the ranging application server may be that the observing terminal is allowed to perform ranging on the target terminal during the discovery process.

S1606: Feed back the first verification result to the DDNMF network element of the HPLMN of the target terminal.

The DDNMF network element of the HPLMN of the target terminal generates the first parameter information and will include the first parameter when the first verification result fed back by the ranging application server indicates that the observing terminal is allowed to perform ranging on the target terminal during the discovery process. The information first discovery response message is sent to the DDNMF network element of the HPLMN of the observing terminal, and the DDNMF network element of the HPLMN of the observing terminal can feed back the first discovery response message to the observing terminal.

In some embodiments, the first parameter information may include security parameters for integrity protection and/or verification of the specified information. For example, the first parameter information includes security parameters used to protect the integrity of the query message, so that the observing terminal can protect the integrity of the query message based on the security parameters and then send it to the target terminal. For another example, the first parameter information includes security parameters used to perform integrity verification on the query response message, so that after receiving the integrity-protected query response message, the observation terminal can perform integrity verification on the query response message based on the security parameters. verify.

According to the ranging verification method of this embodiment, the network device can verify the observing terminal to determine whether the observing terminal is allowed to perform ranging during the discovery process and whether it is allowed to perform ranging on a specific target terminal during the discovery process.

Figure 17 shows a schematic flowchart of a ranging verification method according to an embodiment of the present disclosure. As shown in Figure 17, this method is used to verify the target terminal, and the method may include the following steps.

S1701: Receive the second discovery measurement combination process verification request sent by the DDNMF network element of the HPLMN of the target terminal.

The second discovery measurement combination process verification request is used to request verification whether the target terminal is allowed to perform ranging during the discovery process.

The second discovery measurement combination process verification request is sent by the DDNMF network element of the HPLMN of the target terminal based on the second discovery request message received from the target terminal.

S1702: Verify whether the target terminal is allowed to perform ranging during the discovery process to obtain the second verification result.

The ranging application server verifies whether the target terminal is allowed to perform ranging during the discovery process in response to the second discovery measurement combination verification request.

S1703: Feed back the second verification result to the DDNMF network element of the HPLMN of the target terminal.

The DDNMF network element of the HPLMN of the target terminal generates the second parameter information when the second verification result fed back by the ranging application server indicates that the target terminal is allowed to perform ranging during the discovery process, and will include the second parameter information. 2. The discovery response message is sent to the target terminal.

In some embodiments, the second parameter information may also include security parameters for integrity protection and/or verification of the specified information. For example, the second parameter information includes security parameters used to protect the integrity of the query response message, so that the target terminal can perform integrity protection on the query response message based on the security parameters and then send it to the observation terminal. For another example, the second parameter information includes security parameters used for integrity verification of the query message, so that the target terminal can perform integrity verification of the query information based on the security parameters after receiving the integrity-protected query message.

According to the ranging verification method of this embodiment, the network device can verify the observing terminal to determine whether the observing terminal is allowed to perform ranging during the discovery process and whether it is allowed to perform ranging on a specific target terminal during the discovery process, and can The target terminal is authenticated to determine whether the target terminal is allowed to perform ranging during the discovery process.

Figure 18 shows a schematic flowchart of a discovery measurement combination process according to an embodiment of the present disclosure. As shown in Figure 18, this process can be executed by the observing terminal, the target terminal, the DDNMF network element of the HPLMN of the observing terminal, the DDNMF network element of the HPLMN of the target terminal, the DDNMF network element of the VPLMN, and the ranging application server, and includes the following steps .

S1801: The target terminal sends a second discovery request message to the DDNMF network element of the HPLMN of the target terminal to obtain the discovery query filter monitoring query and security protection parameters. The second discovery request message may include an indicator for instructing the target terminal to request a discovery measurement combination procedure.

S1802. The DDNMF network element of the HPLMN of the target terminal requests the ranging application server to perform discovery measurement combination process verification based on the indicator or local configuration. The ranging application server verifies whether the target terminal is allowed to perform ranging during the discovery process and feeds back the verification results. The DDNMF network element of the HPLMN of the target terminal generates parameter information for the discovery and measurement combination process of the target terminal based on the verification results.

S1803. The DDNMF network element of the HPLMN of the target terminal and the DDNMF network element of the VPLMN exchange verification messages. If the target terminal is not roaming, this step can be omitted.

S1804. The DDNMF network element of the HPLMN of the target terminal returns a discovery response message to the target terminal, including the following parameter information: including security protection parameters corresponding to each discovery filter (such as sending security parameters and receiving security parameters), as well as the current time, maximum Offset and other parameters. Among them, sending security parameters provides necessary information to the target terminal to protect the transmission of the specified message, and receiving security parameters provides necessary information to the target terminal to eliminate the protection of the specified message by the observing terminal.

S1805: The observing terminal sends a first discovery request message to the DDNMF network element of the observing terminal's HPLMN to allow discovery of one or more target terminals. The first discovery request message may include an indicator for instructing the observing terminal to request a discovery measurement combination procedure.

S1806. The DDNMF network element of the HPLMN of the observing terminal requests the ranging application server to perform discovery measurement combination process verification based on the indicator or local configuration. The ranging application server verifies whether the observing terminal is allowed to perform ranging during the discovery process and feeds back the verification results.

S1807: If the first discovery request message sent by the observing terminal is verified, the DDNMF network element of the HPLMN of the observing terminal forwards the first discovery request message to the DDNMF network element of the HPLMN of the target terminal.

S1808. The DDNMF network element of the HPLMN of the target terminal requests the ranging application server to perform discovery measurement combination process verification. The ranging application server verifies whether the observing terminal is allowed to perform ranging on the target terminal during the discovery process and feeds back the verification results. The DDNMF network element of the HPLMN of the target terminal generates parameter information for the discovery and measurement combination process of the observation terminal based on the verification results.

S1809: The DDNMF network element of the HPLMN of the target terminal returns a discovery response message to the DDNMF network element of the HPLMN of the observing terminal, including the following parameter information: sending security parameters and receiving security parameters, such as DUIK. Among them, receiving security parameters provides necessary information to the observing terminal to eliminate the protection of the specified message by the target terminal. .

S1810: The DDNMF network element of the HPLMN of the observation terminal and the DDNMF network element of the VPLMN exchange verification messages. If the observing terminal is not roaming, this step can be omitted.

S1811. The DDNMF network element of the HPLMN of the observing terminal returns a discovery response message including sending security parameters, receiving security parameters and other parameters to the observing terminal.

S1812: The observing terminal sends a query message including the measurement signal to the target terminal and monitors the query response message. Before sending the solicitation message, the solicitation message is integrity protected by appending the MIC calculated using DUIK to the end of the solicitation message.

S1813. The target terminal listens for query messages that satisfy its discovery filter. In order to find a matching message, the target terminal performs integrity verification on the received solicitation message using the DUIK contained in the receive security parameters received by the target terminal.

S1814, if the integrity is successfully verified, the target terminal returns an integrity-protected inquiry response message, which includes the feedback measurement signal and the time difference between receiving the inquiry message and the feedback inquiry response message. The solicitation response message is integrity protected by appending the MIC calculated using DUIK to the end of the solicitation response message.

S1815: The observation terminal monitors the inquiry response message that satisfies its discovery filter. In order to find a matching message, the target terminal performs integrity verification on the received solicitation response message using the DUIK contained in the receive security parameters received by the observing terminal. After successful verification, the observing terminal can calculate the distance to the target terminal.

S1816: After receiving the inquiry response message, the observing terminal can also report a matching report to the DDNMF network element of the HPLMN of the observing terminal. The matching report can include the current time, MIC and other information.

S1817: After receiving the matching report, the DDNMF network element of the HPLMN of the observing terminal may optionally request re-verification from the ranging application server.

S1818: After successfully checking the MIC, the DDNMF network element of the HPLMN of the observing terminal can return matching report confirmation information to the observing terminal, and the matching report confirmation information can include the matching report refresh time.

S1819. Optionally, the DDNMF network element of the HPLMN of the observing terminal can also send a detection report to the DDNMF network element of the HPLMN of the target terminal.

The above S1816-S1819 are optional and are only executed when the MIC needs to be checked.

In the above-mentioned embodiments provided by the present application, the methods provided by the embodiments of the present application are introduced from the perspectives of network equipment and user equipment. In order to implement each function in the method provided by the above embodiments of the present application, network equipment and user equipment may include hardware structures and software modules to implement the above functions in the form of hardware structures, software modules, or hardware structures plus software modules. One of the above functions can be executed by a hardware structure, a software module, or a hardware structure plus a software module.

Corresponding to the distance measurement methods provided by the above embodiments, the present disclosure also provides a distance measurement device. Since the distance measurement device provided by the embodiments of the present disclosure corresponds to the distance measurement methods provided by the above embodiments, the distance measurement method is The implementation of the distance method is also applicable to the distance measurement device provided in this embodiment, and will not be described in detail in this embodiment.

Figure 19 is a schematic structural diagram of a distance measuring device 1900 provided by an embodiment of the present disclosure.

As shown in Figure 19, the device 1900 is applied to a first terminal, where the first terminal is a terminal that initiates a discovery measurement combination process. The discovery measurement combination process is used to perform ranging during the discovery process, and the device 1900 can It includes a transceiver module 1901 and a processing module 1902.

The transceiver module 1901 is configured to send a query message to a second terminal, where the second terminal is a terminal that will be discovered to perform a discovery measurement combination process, and the query message is used to indicate that the second terminal and the first terminal The terminal performs a discovery match, and the inquiry message includes a measurement signal; receives an inquiry response message fed back by the second terminal in response to the inquiry message, wherein the inquiry response message is determined by the second terminal to be consistent with the first inquiry message. Sent when the terminal matches, and the query response message includes a feedback measurement signal.

The processing module 1902 is configured to calculate the distance to the second terminal based on the measurement signal and the feedback measurement signal.

According to the ranging device of the embodiment of the present disclosure, the observing terminal sends a query message to the target terminal when it is allowed to perform ranging on the target terminal during the discovery process. The target terminal matches the observing terminal and the target terminal is allowed to perform ranging during the discovery process. When ranging is performed during the process, a query response message is fed back to the observation terminal, and the observation terminal calculates the distance to the target terminal based on the measurement signal in the query message and the feedback measurement signal in the query response message. Thus, ranging between two terminals can be performed during the discovery process, thereby reducing network resource consumption and saving terminal power consumption.

In some embodiments, the processing module 1902 is used to perform integrity protection on the query message.

In some embodiments, the processing module 1902 is configured to calculate a message verification code based on the security parameters received from the first proximity service discovery management function DDNMF network element of the first local public land mobile network HPLMN of the first terminal; And append the message verification code to the end of the query message to protect the integrity of the query message.

In some embodiments, the processing module 1902 is configured to verify the integrity of the query response message, and if the integrity of the query response message is successfully verified, based on the measurement signal and the feedback measurement signal , calculate the distance to the second terminal.

In some embodiments, the processing module 1902 is configured to verify the integrity of the query response message based on the security parameters received from the first DDNMF network element.

In some embodiments, the transceiver module 1901 is configured to: send a first discovery request message to the first DDNMF network element, where the first discovery request message is used to request the execution of a discovery measurement combination process; receive the first DDNMF A discovery response message fed back by the network element when it is determined that the first terminal is allowed to perform ranging on the second terminal during the discovery process. The discovery response message includes parameters for the discovery measurement combination process. Information; when the first terminal is allowed to perform ranging on the second terminal during the discovery process, send a query message to the second terminal.

In some embodiments, the first discovery request message includes a discovery measurement combination process indication, and the discovery measurement combination process indication is used to request verification whether the first terminal is allowed to perform the discovery process on the second terminal. Ranging.

Figure 20 is a schematic structural diagram of a distance measuring device 2000 provided by an embodiment of the present disclosure.

As shown in Figure 20, the device 2000 is applied to a second terminal, where the second terminal is a terminal that will be discovered to perform a discovery measurement combination process, and the discovery measurement combination process is used to perform ranging during the discovery process, And the device 2000 may include a transceiver module 2001.

The transceiver module 2001 is configured to receive a query message sent by a first terminal, where the first terminal is a terminal that initiates a discovery measurement combination process, and the query message is used to instruct the second terminal to perform discovery with the first terminal. match, and the query message includes a measurement signal; and when the second terminal determines that it matches the first terminal, feedback a query response message to the first terminal, wherein the query response message includes Feedback measurement signals, wherein the measurement signals and the feedback measurement signals are used to determine the distance between the first terminal and the second terminal.

In some embodiments, the device 2000 further includes a processing module 2002 for verifying the integrity of the inquiry message; wherein the feedback of an inquiry response message to the first terminal includes: after successfully verifying the integrity of the inquiry message If necessary, feed back the query response message to the first terminal.

In some embodiments, the processing module 2002 is configured to verify the query message based on security parameters received from a second proximity service discovery management function DDNMF network element of the second local public land mobile network HPLMN of the second terminal. of integrity.

In some embodiments, the processing module 2002 is configured to perform integrity protection on the query response message.

In some embodiments, the processing module 2002 is configured to calculate a message verification code based on the security parameters received from the second DDNMF network element; and append the message verification code to the end of the query response message to verify The query response message is integrity protected.

In some embodiments, the transceiver module 2001 is configured to: send a second discovery request message to the second DDNMF network element, where the second discovery request message is used to request execution of a discovery measurement combination process; and receive the The discovery response message fed back by the second DDNMF network element when it is determined that the second terminal is allowed to perform ranging during the discovery process, the discovery response message includes parameter information for the discovery measurement combination process; wherein , the feedback of the inquiry response message to the first terminal includes: when the second terminal determines that it matches the first terminal and the second terminal is allowed to perform ranging during the discovery process, send the inquiry response message to the first terminal. The first terminal feeds back the inquiry response message.

In some embodiments, the second discovery request message includes a discovery measurement combination verification indication, and the discovery measurement combination process indication is used to request verification of whether the second terminal is allowed to perform ranging during the discovery process.

Corresponding to the ranging verification methods provided by the above-mentioned embodiments, the present disclosure also provides a ranging verification device, because the ranging verification device provided by the embodiments of the present disclosure is consistent with the ranging verification methods provided by the above-mentioned embodiments. Correspondingly, therefore, the implementation of the ranging method is also applicable to the ranging verification device provided in this embodiment, and will not be described in detail in this embodiment.

Figure 21 is a schematic structural diagram of a ranging verification device 2100 provided by an embodiment of the present disclosure.

As shown in Figure 21, the device 2100 is applied to the first proximity service discovery management function DDNMF network element of the first local public land mobile network HPLMN of the first terminal, and the device 2100 may include a transceiver module 2101.

The transceiver module 2101 is configured to: receive a first discovery request message sent by the first terminal, where the first discovery request message is used to request execution of a discovery measurement combination process and instructs to send the first discovery request message. A terminal is a terminal that initiates a discovery measurement combination process. The discovery measurement combination process is used to perform ranging during the discovery process; in response to the first discovery request message, a first discovery measurement combination process verification is sent to the ranging application server. request, the ranging application server is configured to verify whether the first terminal is allowed to perform ranging during the discovery process based on the first discovery measurement combination verification request; receive the verification result from the ranging application server, and verify in the verification If the result indicates that the first terminal is allowed to perform ranging during the discovery process, forward the first discovery request message to the second DDNMF network element of the second HPLMN of the second terminal, and the second terminal is A terminal that will be discovered for performing a discovery measurement combination process; receiving a discovery response message fed back by the second DDNMF network element when it is determined that the first terminal is allowed to perform ranging on the second terminal during the discovery process. , wherein the discovery response message includes parameter information for the discovery measurement combination process; and sending the discovery response message to the first terminal.

According to the ranging verification device of this embodiment, the network device can verify the observing terminal to determine whether the observing terminal is allowed to perform ranging during the discovery process and whether it is allowed to perform ranging on a specific target terminal during the discovery process. Additionally, the network device can authenticate the target terminal to determine whether the target terminal is allowed to perform ranging during the discovery process. Thus, it can be verified whether the terminal can perform the discovery measurement combination process.

In some embodiments, the parameter information includes security parameters for integrity protection and/or verification of specified information.

In some embodiments, the first discovery request message includes a discovery measurement combination process indication, and the discovery measurement combination process indication is used to request verification whether the first terminal is allowed to perform ranging during the discovery process and to verify that the Whether the first terminal is allowed to perform ranging on the second terminal during the discovery process.

Figure 22 is a schematic structural diagram of a ranging verification device 2200 provided by an embodiment of the present disclosure.

As shown in Figure 22, the device 2200 is applied to the first proximity service discovery management function DDNMF network element of the first local public land mobile network HPLMN of the first terminal, and the device 2200 may include a transceiver module 2201 and a processing module 2202.

The transceiver module 2201 is configured to receive a second discovery request message sent by a second terminal, where the second discovery request message is used to request execution of a discovery measurement combination process and to indicate the second terminal that sends the second discovery request message. It is a terminal that will be discovered to perform a discovery measurement combination process. The discovery measurement combination process is used to perform ranging during the discovery process; in response to the second discovery request message, send a second discovery measurement combination to the ranging application server. A process verification request, the ranging application server verifies whether the second terminal is allowed to perform ranging during the discovery process based on the second discovery measurement combination process verification request; and receives a verification result from the ranging application server.

The processing module 2202 is configured to generate second parameter information for the discovery measurement combination process of the second terminal when the verification result indicates that the second terminal is allowed to perform ranging during the discovery process.

The transceiving module 2201 is also configured to send a second discovery response message including the second parameter information to the second terminal.

The transceiver module 2201 is also configured to receive a first discovery request message forwarded by the first DDNMF network element of the first HPLMN of the first terminal. The first discovery request message is used to request execution of the discovery measurement combination process and instructs to send the The first terminal of the first discovery request message is the terminal that initiates the discovery and measurement combination process; in response to the first discovery request message, a first discovery and measurement combination process verification request is sent to the ranging application server, and the ranging application The server verifies whether the first terminal is allowed to perform ranging on the second terminal during the discovery process based on the first discovery measurement combination process verification request.

The processing module 2202 is also configured to generate a discovery measurement combination process for the first terminal when the verification result indicates that the first terminal is allowed to perform ranging on the second terminal during the discovery process. First parameter information.

The transceiving module 2201 is also configured to send a first discovery response message including the first parameter information to the first DDNMF network element.

In some embodiments, the first parameter information and the second parameter information each include security parameters for integrity protection and/or verification of specified information.

In some embodiments, the second discovery request message includes a second discovery measurement combination process indication, and the second discovery measurement combination process indication is used to request verification whether the second terminal is allowed to perform ranging during the discovery process. .

In some embodiments, the first discovery request message includes a first discovery measurement combination process indication, and the first discovery measurement combination process indication is used to request verification whether the first terminal is allowed to perform the discovery process on the The second terminal performs ranging.

Figure 23 is a schematic structural diagram of a ranging verification device 2300 provided by an embodiment of the present disclosure.

As shown in Figure 23, the device 2300 is applied to the first proximity service discovery management function DDNMF network element of the first local public land mobile network HPLMN of the first terminal, and the device 2300 may include a transceiver module 2301 and a processing module 2302.

The transceiver module 2301 is configured to receive a first discovery and measurement combination process verification request sent by the first DDNMF network element of the first local public land mobile network HPLMN of the first terminal, where the first terminal is the one that initiates the discovery and measurement combination process. For a terminal, the discovery and measurement combination process is used to perform ranging during the discovery process, and the first discovery and measurement combination process verification request is used to request verification whether the first terminal is allowed to perform ranging during the discovery process.

The processing module 2302 is used to verify whether the first terminal is allowed to perform ranging during the discovery process.

The transceiver module 2301 is also configured to feed back the first verification result to the first DDNMF network element; receive the second discovery measurement combination process verification request sent by the second DDNMF network element of the second HPLMN of the second terminal, wherein, The second terminal is a terminal that will be discovered to perform a discovery measurement combination process. The second discovery measurement combination process verification request is used to request verification whether the first terminal is allowed to perform the discovery measurement combination process on the second terminal. Ranging.

The processing module 2302 is also used to verify whether the first terminal is allowed to perform ranging on the second terminal during the discovery process.

The transceiver module 2301 is also configured to feed back the second verification result to the second DDNMF network element. The second DDNMF network element indicates that the first terminal is allowed to perform the detection during the discovery process when the second verification result indicates that the second DDNMF network element When the second terminal performs ranging, first parameter information for the discovery measurement combination process of the first terminal is generated.

In some embodiments, the transceiver module 2301 is also configured to receive a third discovery and measurement combination process verification request sent by the second DDNMF network element. The third discovery and measurement combination process verification request is used to request verification of whether all The second terminal performs ranging during the discovery process.

The processing module 2302 is also used to verify whether the second terminal is allowed to perform ranging during the discovery process.

The transceiver module 2301 is also configured to feed back the verification result to the second DDNMF network element, which is generated when the verification result indicates that the second terminal is allowed to perform ranging during the discovery process. Second parameter information used for the discovery measurement combination process of the second terminal.

Please refer to Figure 24, which is a schematic structural diagram of a communication device 2400 provided by an embodiment of the present application. The communication device 2400 may be a network device, a user equipment, a chip, a chip system, or a processor that supports network equipment to implement the above method, or a chip, a chip system, or a processor that supports user equipment to implement the above method. Processor etc. This device can be used to implement the method described in the above method embodiment. For details, please refer to the description in the above method embodiment.

Communication device 2400 may include one or more processors 2401. The processor 2401 may be a general-purpose processor or a special-purpose processor, or the like. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data. The central processor can be used to control communication devices (such as base stations, baseband chips, terminal equipment, terminal equipment chips, DU or CU, etc.) and execute computer programs. , processing data for computer programs.

Optionally, the communication device 2400 may also include one or more memories 2402, on which a computer program 2404 may be stored. The processor 2401 executes the computer program 2404, so that the communication device 2400 performs the steps described in the above method embodiments. method. Optionally, the memory 2402 may also store data. The communication device 2400 and the memory 2402 can be provided separately or integrated together.

Optionally, the communication device 2400 may also include a transceiver 2405 and an antenna 2406. The transceiver 2405 may be called a transceiver unit, a transceiver, a transceiver circuit, etc., and is used to implement transceiver functions. The transceiver 2405 may include a receiver and a transmitter. The receiver may be called a receiver or a receiving circuit, etc., used to implement the receiving function; the transmitter may be called a transmitter, a transmitting circuit, etc., used to implement the transmitting function.

Optionally, the communication device 2400 may also include one or more interface circuits 2407. The interface circuit 2407 is used to receive code instructions and transmit them to the processor 2401. The processor 2401 executes the code instructions to cause the communication device 2400 to perform the method described in the above method embodiment.

In one implementation, the processor 2401 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuits, interfaces or interface circuits used to implement the receiving and transmitting functions can be separate or integrated together. The above-mentioned transceiver circuit, interface or interface circuit can be used for reading and writing codes/data, or the above-mentioned transceiver circuit, interface or interface circuit can be used for signal transmission or transfer.

In one implementation, the processor 2401 may store a computer program 2403, and the computer program 2403 runs on the processor 2401, causing the communication device 2400 to perform the method described in the above method embodiment. The computer program 2403 may be solidified in the processor 2401, in which case the processor 2401 may be implemented by hardware.

In one implementation, the communication device 2400 may include a circuit, which may implement the functions of sending or receiving or communicating in the foregoing method embodiments. The processor and transceiver described in this application can be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board (PCB), electronic equipment, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), n-type metal oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication device described in the above embodiments may be network equipment or user equipment, but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be limited by FIG. 24 . The communication device may be a stand-alone device or may be part of a larger device. For example, the communication device may be:

(1) Independent integrated circuit IC, or chip, or chip system or subsystem;

(2) A collection of one or more ICs. Optionally, the IC collection may also include storage components for storing data and computer programs;

(3)ASIC, such as modem;

(4) Modules that can be embedded in other devices;

(5) Receivers, terminal equipment, intelligent terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.;

(6) Others, etc.

For the case where the communication device may be a chip or a chip system, refer to the schematic structural diagram of the chip shown in FIG. 25 . The chip shown in Figure 25 includes a processor 2501 and an interface 2502. The number of processors 2501 may be one or more, and the number of interfaces 2502 may be multiple.

Optionally, the chip also includes a memory 2503, which is used to store necessary computer programs and data.

Those skilled in the art can also understand that the various illustrative logical blocks and steps listed in the embodiments of this application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented in hardware or software depends on the specific application and overall system design requirements. Those skilled in the art can use various methods to implement the described functions for each specific application, but such implementation should not be understood as exceeding the protection scope of the embodiments of the present application.

Embodiments of the present application also provide a system for implementing ranging. The system includes a communication device as a user equipment in the aforementioned embodiment of FIGS. 19-20 and a communication device as a network device in the aforementioned embodiment of FIGS. 21-23. Alternatively, the system It includes the communication device as user equipment and the communication device as network equipment in the aforementioned embodiment of FIG. 24 .

This application also provides a readable storage medium on which instructions are stored. When the instructions are executed by a computer, the functions of any of the above method embodiments are implemented.

This application also provides a computer program product, which, when executed by a computer, implements the functions of any of the above method embodiments.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program may be stored in or transferred from one computer-readable storage medium to another, for example, the computer program may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The usable media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks, SSD)) etc.

Persons of ordinary skill in the art can understand that the first, second, and other numerical numbers involved in this application are only for convenience of description and are not used to limit the scope of the embodiments of this application and also indicate the order.

At least one in this application can also be described as one or more, and the plurality can be two, three, four or more, which is not limited by this application. In the embodiment of this application, for a technical feature, the technical feature is distinguished by "first", "second", "third", "A", "B", "C" and "D", etc. The technical features described in "first", "second", "third", "A", "B", "C" and "D" are in no particular order or order.

As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus, and/or means for providing machine instructions and/or data to a programmable processor ( For example, magnetic disks, optical disks, memories, programmable logic devices (PLD)), including machine-readable media that receive machine instructions as machine-readable signals. The term "machine-readable signal" refers to any signal used to provide machine instructions and/or data to a programmable processor.

The systems and techniques described herein may be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., A user's computer having a graphical user interface or web browser through which the user can interact with implementations of the systems and technologies described herein), or including such backend components, middleware components, or any combination of front-end components in a computing system. The components of the system may be interconnected by any form or medium of digital data communication (eg, a communications network). Examples of communication networks include: local area network (LAN), wide area network (WAN), and the Internet.

Computer systems may include clients and servers. Clients and servers are generally remote from each other and typically interact over a communications network. The relationship of client and server is created by computer programs running on corresponding computers and having a client-server relationship with each other.

It should be understood that various forms of the process shown above may be used, with steps reordered, added or deleted. For example, each step described in the present disclosure can be executed in parallel, sequentially, or in a different order. As long as the desired results of the technical solutions disclosed in the present disclosure can be achieved, there is no limitation here.

In addition, it should be understood that the various embodiments described in this application can be implemented alone or in combination with other embodiments if the scheme allows.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A ranging method, characterized in that the method is executed by a first terminal, wherein the first terminal is a terminal that initiates a discovery measurement combination process, and the discovery measurement combination process is used to perform ranging during the discovery process, The methods include:

Send a query message to a second terminal, where the second terminal is a terminal that will be discovered for the discovery measurement combination process, and the query message is used to instruct the second terminal to perform discovery matching with the first terminal, And the consultation message includes a measurement signal;

Receive an inquiry response message fed back by the second terminal in response to the inquiry message, wherein the inquiry response message is sent when the second terminal determines that it matches the first terminal, and the inquiry response message contains including feedback measurement signals; and

Based on the measurement signal and the feedback measurement signal, a distance to the second terminal is calculated.
The method according to claim 1, characterized in that, before sending the inquiry message to the second terminal, it further includes:

Integrity protection is performed on the query message.
The method of claim 2, wherein the integrity protection of the query message includes:

calculating a message verification code based on the security parameters received from the first Proximity Service Discovery Management Function DDNMF network element of the first local public land mobile network HPLMN of the first terminal; and

The message verification code is appended to the end of the query message to protect the integrity of the query message.
The method of claim 1, wherein the query response message is an integrity protected message, and the method further includes:

Verify the integrity of the inquiry response message;

Wherein, calculating the distance to the second terminal based on the measurement signal and the feedback measurement signal includes:

If the integrity of the query response message is successfully verified, the distance to the second terminal is calculated based on the measurement signal and the feedback measurement signal.
The method of claim 4, wherein verifying the integrity of the inquiry response message includes:

Verify the integrity of the query response message based on the security parameters received from the first DDNMF network element.
The method according to any one of claims 1-5, further comprising:

Send a first discovery request message to the first DDNMF network element, where the first discovery request message is used to request execution of a discovery measurement combination process; and

Receive a discovery response message fed back by the first DDNMF network element when it is determined that the first terminal is allowed to perform ranging on the second terminal during the discovery process, and the discovery response message includes the information for the Discover parameter information of the measurement combination process;

Wherein, sending the inquiry message to the second terminal includes:

When the first terminal is allowed to perform ranging on the second terminal during the discovery process, a query message is sent to the second terminal.
The method of claim 6, wherein the first discovery request message includes a discovery measurement combination process indication, and the discovery measurement combination process indication is used to request verification of whether the first terminal is allowed in the discovery process. Perform ranging on the second terminal.
A ranging method, characterized in that the method is executed by a second terminal, wherein the second terminal is a terminal that will be discovered to perform a discovery measurement combination process, and the discovery measurement combination process is used in the discovery process Perform ranging, the method includes:

Receive a query message sent by a first terminal, where the first terminal is a terminal that initiates a discovery measurement combination process, the query message is used to instruct the second terminal to perform discovery matching with the first terminal, and the The solicitation message includes the measurement signal; and

When the second terminal determines that it matches the first terminal, feedback a query response message to the first terminal, wherein the query response message includes a feedback measurement signal,

Wherein, the measurement signal and the feedback measurement signal are used to determine the distance between the first terminal and the second terminal.
The method of claim 8, wherein the query message is an integrity protected message, and the method further includes:

Verify the integrity of the consultation message;

The feedback of the inquiry response message to the first terminal includes:

If the integrity of the query message is successfully verified, the query response message is fed back to the first terminal.
The method of claim 9, wherein verifying the integrity of the query message includes:

The integrity of the query message is verified based on security parameters received from a second Proximity Service Discovery Management Function DDNMF network element of the second local public land mobile network HPLMN of the second terminal.
The method according to claim 8, characterized in that, before sending the inquiry response message to the first terminal, it further includes:

Integrity protection is performed on the query response message.
The method of claim 11, wherein the integrity protection of the query response message includes:

Calculate a message verification code based on the security parameters received from the second DDNMF network element; and

The message verification code is appended to the end of the query response message to protect the integrity of the query response message.
The method according to any one of claims 8-12, further comprising:

Send a second discovery request message to the second DDNMF network element, where the second discovery request message is used to request execution of a discovery measurement combination process; and

Receive a discovery response message fed back by the second DDNMF network element when it is determined that the second terminal is allowed to perform ranging during the discovery process, and the discovery response message includes parameters for the discovery measurement combination process. information;

Wherein, the feedback inquiry response message to the first terminal includes:

When the second terminal determines that it matches the first terminal and the second terminal is allowed to perform ranging during the discovery process, a query response message is fed back to the first terminal.
The method of claim 13, wherein the second discovery request message includes a discovery measurement combination verification indication, and the discovery measurement combination process indication is used to request verification of whether the second terminal is allowed in the discovery process. Perform ranging.
A ranging verification method, characterized in that the method is executed by the first proximity service discovery management function DDNMF network element of the first local public land mobile network HPLMN of the first terminal, and the method includes:

Receive a first discovery request message sent by the first terminal, where the first discovery request message is used to request execution of a discovery measurement combination process and instructs the first terminal sending the first discovery request message to initiate a discovery measurement combination process. For a terminal, the discovery measurement combination process is used to perform ranging during the discovery process;

In response to the first discovery request message, a first discovery measurement combination process verification request is sent to the ranging application server, and the ranging application server verifies whether the first terminal is allowed to operate based on the first discovery measurement combination verification request. Perform ranging during discovery;

Receive a verification result from the ranging application server, and forward the first discovery request message to the second terminal of the second terminal if the verification result indicates that the first terminal is allowed to perform ranging during the discovery process. The second DDNMF network element of HPLMN, the second terminal is the terminal that will be discovered for the discovery measurement combination process;

Receive a discovery response message fed back by the second DDNMF network element when it is determined that the first terminal is allowed to perform ranging on the second terminal during the discovery process, wherein the discovery response message includes information for the Discover parameter information for the measurement combination process; and

Send the discovery response message to the first terminal.
The method of claim 15, wherein the parameter information includes security parameters used for integrity protection and/or verification of designated information.
The method of claim 15 or 16, wherein the first discovery request message includes a discovery measurement combination process indication, and the discovery measurement combination process indication is used to request verification of whether the first terminal is allowed to perform the discovery process. Perform ranging during the process and verify whether the first terminal is allowed to perform ranging on the second terminal during the discovery process.
A ranging verification method, characterized in that the method is executed by the second proximity service discovery management function DDNMF network element of the second local public land mobile network HPLMN of the second terminal, and the method includes:

Receive a second discovery request message sent by a second terminal, where the second discovery request message is used to request the execution of a discovery measurement combination process and indicates that the second terminal sending the second discovery request message is to be discovered for discovery measurement. The terminal of the combination process, the discovery measurement combination process is used to perform ranging during the discovery process;

In response to the second discovery request message, a second discovery measurement combination process verification request is sent to the ranging application server, and the ranging application server verifies whether the second terminal is allowed based on the second discovery measurement combination process verification request. Perform ranging during the discovery process to obtain a second verification result;

Receive the second verification result from the ranging application server;

If the second verification result indicates that the second terminal is allowed to perform ranging during the discovery process, generate second parameter information for the discovery measurement combination process of the second terminal; and

Send a second discovery response message including the second parameter information to the second terminal.
The method of claim 18, further comprising:

Receive a first discovery request message forwarded by the first DDNMF network element of the first HPLMN of the first terminal, where the first discovery request message is used to request execution of a discovery measurement combination process and instructs the first person to send the first discovery request message. The terminal is the terminal that initiates the discovery and measurement combination process;

In response to the first discovery request message, a third discovery measurement combination process verification request is sent to the ranging application server, and the ranging application server verifies whether the third discovery measurement combination process verification request is allowed based on the third discovery measurement combination process verification request. A terminal performs ranging on the second terminal during the discovery process to obtain the first verification result;

Receive the first verification result from the ranging application server;

When the first verification result indicates that the first terminal is allowed to perform ranging on the second terminal during the discovery process, generating first parameter information for the discovery measurement combination process of the first terminal ;as well as

Send a first discovery response message including the first parameter information to the first DDNMF network element.
The method of claim 19, wherein the first parameter information and the second parameter information each include security parameters for integrity protection and/or verification of designated information.
The method of claim 18, wherein the second discovery request message includes a second discovery measurement combination process indication, and the second discovery measurement combination process indication is used to request verification of whether the second terminal is allowed. Perform ranging during discovery.
The method of claim 19, wherein the first discovery request message includes a first discovery measurement combination process indication, and the first discovery measurement combination process indication is used to request verification of whether the first terminal is allowed. Ranging is performed on the second terminal during discovery.
A distance measurement verification method, characterized in that the method includes:

Receive the first discovery and measurement combination process verification request sent by the first DDNMF network element of the first local public land mobile network HPLMN of the first terminal, where the first terminal is the terminal that initiates the discovery and measurement combination process, and the discovery and measurement combination process The process is used to perform ranging during the discovery process, and the first discovery measurement combination process verification request is used to request verification whether the first terminal is allowed to perform ranging during the discovery process;

Verify whether the first terminal is allowed to perform ranging during the discovery process to obtain an intermediate verification result;

Feed back the intermediate verification result to the first DDNMF network element;

Receive the third discovery measurement combination process verification request sent by the second DDNMF network element of the second HPLMN of the second terminal, wherein the second terminal is a terminal that will be discovered to perform the discovery measurement combination process, and the third discovery The measurement combination process verification request is used to request verification whether the first terminal is allowed to perform ranging on the second terminal during the discovery process;

Verify whether the first terminal is allowed to perform ranging on the second terminal during the discovery process to obtain a first verification result; and

The first verification result is fed back to the second DDNMF network element, and the second DDNMF network element performs operations on the second terminal when the first verification result indicates that the first terminal is allowed to perform the discovery process on the second terminal. In the case of ranging, first parameter information for a discovery measurement combination process of the first terminal is generated.
The method of claim 23, further comprising:

Receive a second discovery measurement combination process verification request sent by the second DDNMF network element, where the second discovery measurement combination process verification request is used to request verification whether the second terminal is allowed to perform ranging during the discovery process;

Verify whether the second terminal is allowed to perform ranging during the discovery process to obtain a second verification result; and

The second verification result is fed back to the second DDNMF network element, which is generated when the second verification result indicates that the second terminal is allowed to perform ranging during the discovery process. Second parameter information used for the discovery measurement combination process of the second terminal.
A ranging device, characterized in that it is applied to a first terminal, wherein the first terminal is a terminal that initiates a discovery and measurement combination process, and the discovery and measurement combination process is used to perform ranging during the discovery process, and the device include:

Transceiver module, used for:

Send a query message to a second terminal, where the second terminal is a terminal that will be discovered for the discovery measurement combination process, and the query message is used to instruct the second terminal to perform discovery matching with the first terminal, And the consultation message includes a measurement signal;

Receive an inquiry response message fed back by the second terminal in response to the inquiry message, wherein the inquiry response message is sent when the second terminal determines that it matches the first terminal, and the inquiry response message contains including feedback measurement signals; and

A processing module configured to calculate the distance to the second terminal based on the measurement signal and the feedback measurement signal.
A ranging device, characterized in that it is applied to a second terminal, wherein the second terminal is a terminal that will be discovered to perform a discovery measurement combination process, and the discovery measurement combination process is used to perform ranging during the discovery process. , the device includes:

Transceiver module, used for:

Receive a query message sent by a first terminal, where the first terminal is a terminal that initiates a discovery measurement combination process, the query message is used to instruct the second terminal to perform discovery matching with the first terminal, and the The inquiry message includes measurement signals;

When the second terminal determines that it matches the first terminal, feedback a query response message to the first terminal, wherein the query response message includes a feedback measurement signal,

Wherein, the measurement signal and the feedback measurement signal are used to determine the distance between the first terminal and the second terminal.
A ranging verification device, characterized in that it is applied to the first proximity service discovery management function DDNMF network element of the first local public land mobile network HPLMN of the first terminal, and the device includes: a transceiver module;

The transceiver module is used for:

Receive a first discovery request message sent by the first terminal, where the first discovery request message is used to request execution of a discovery measurement combination process and instructs the first terminal sending the first discovery request message to initiate a discovery measurement combination process. For a terminal, the discovery measurement combination process is used to perform ranging during the discovery process;

In response to the first discovery request message, a first discovery measurement combination process verification request is sent to the ranging application server, and the ranging application server is configured to verify whether the first discovery measurement combination verification request is allowed based on the first discovery measurement combination verification request. The terminal performs ranging during the discovery process;

Receive a verification result from the ranging application server, and forward the first discovery request message to the second terminal of the second terminal if the verification result indicates that the first terminal is allowed to perform ranging during the discovery process. The second DDNMF network element of HPLMN, the second terminal is the terminal that will be discovered for the discovery measurement combination process;

Receive a discovery response message fed back by the second DDNMF network element when it is determined that the first terminal is allowed to perform ranging on the second terminal during the discovery process, wherein the discovery response message includes information for the Discover parameter information for the measurement combination process; and

Send the discovery response message to the first terminal.
A ranging verification device, characterized in that the second proximity service discovery management function DDNMF network element applied to the second local public land mobile network HPLMN of the second terminal is executed, and the device includes: a transceiver module and a processing module;

The transceiver module is used for:

Receive a second discovery request message sent by a second terminal, where the second discovery request message is used to request the execution of a discovery measurement combination process and indicates that the second terminal sending the second discovery request message is to be discovered for discovery measurement. The terminal of the combination process, the discovery measurement combination process is used to perform ranging during the discovery process;

In response to the second discovery request message, a second discovery measurement combination process verification request is sent to the ranging application server, and the ranging application server verifies whether the second terminal is allowed based on the second discovery measurement combination process verification request. Perform ranging during the discovery process to obtain a second verification result;

Receive the second verification result from the ranging application server;

The processing module generates a second parameter for the discovery measurement combination process of the second terminal when the second verification result indicates that the second terminal is allowed to perform ranging during the discovery process. information; and

The transceiving module is also configured to send a second discovery response message including the second parameter information to the second terminal.
A ranging verification device, characterized in that the device includes a transceiver module and a processing module;

The transceiver module is configured to receive a first discovery and measurement combination process verification request sent by the first DDNMF network element of the first local public land mobile network HPLMN of the first terminal, where the first terminal is the terminal that initiates the discovery and measurement combination process. , the discovery measurement combination process is used to perform ranging during the discovery process, and the first discovery measurement combination process verification request is used to request verification whether the first terminal is allowed to perform ranging during the discovery process;

The processing module is used to verify whether the first terminal is allowed to perform ranging during the discovery process to obtain an intermediate verification result;

The transceiver module is also configured to feed back the intermediate verification result to the first DDNMF network element; receive a third discovery measurement combination process verification request sent by the second DDNMF network element of the second HPLMN of the second terminal, wherein, The second terminal is a terminal that will be discovered to perform a discovery measurement combination process. The third discovery measurement combination process verification request is used to request verification whether the first terminal is allowed to perform the discovery measurement combination process on the second terminal. ranging;

The processing module is also used to verify whether the first terminal is allowed to perform ranging on the second terminal during the discovery process to obtain a first verification result; and

The transceiver module is also configured to feed back the first verification result to the second DDNMF network element. When the first verification result indicates that the first terminal is allowed to be used in the discovery process, the second DDNMF network element When performing ranging on the second terminal, first parameter information for a discovery measurement combination process of the first terminal is generated.
A communication device, which includes: a transceiver; a memory; and a processor, respectively connected to the transceiver and the memory, and configured to control the wireless operation of the transceiver by executing computer-executable instructions on the memory. Transmit and receive signals, and can implement the method described in any one of claims 1-24.
A computer storage medium, wherein the computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the method described in any one of claims 1-24 can be implemented.