Reference signal configuration method and device, equipment and storage medium

Abstract

The invention discloses a reference signal configuration method and device, equipment and a storage medium, and relates to the field of mobile communication. The method comprises the following steps: sending configuration information of a reference signal to target equipment; wherein the reference signal is transmitted through a first link; the target device is a device other than the first link. According to the technical scheme provided by the embodiment of the invention, the configuration information of the reference signal is sent to the target equipment, so that the target equipment except the first link where the reference signal is located can acquire the configuration information of the reference signal, and the target equipment can measure the reference signal; the situation that the target device cannot measure the reference signal is avoided, and the measurement effect of the reference signal in a cooperative sensing scene or a hybrid positioning scene is improved.

Description

Reference signal configuration method, device, equipment and storage medium Technical Field

[0001] The present application relates to the field of mobile communications, and in particular to a reference signal configuration method, apparatus, device, and storage medium. Background Art

[0002] In a cooperative sensing scenario, collaboration between a base station and multiple terminals may be required to perform sensing measurements.

[0003] In related technologies, collaborative measurement of reference signals cannot be achieved due to the orthogonality of frequency domain resources of different terminals or the network equipment is not aware of the time-frequency resources independently selected by the terminals.

[0004] Summary of the Invention

[0005] The present invention provides a method, apparatus, device, and storage medium for configuring a reference signal. The technical solution is as follows:

[0006] According to one aspect of an embodiment of the present application, a method for configuring a reference signal is provided. The method is performed by a first terminal, and the method includes:

[0007] Sending configuration information of the reference signal to a target device;

[0008] The reference signal is transmitted via a first link; and the target device is a device outside the first link.

[0009] According to another aspect of an embodiment of the present application, a method for configuring a reference signal is provided, the method being performed by a second terminal, the method including:

[0010] sending or receiving configuration information of the reference signal;

[0011] The reference signal is transmitted via a first link; and the target device receiving the configuration information is a device outside the first link.

[0012] According to another aspect of an embodiment of the present application, a method for configuring a reference signal is provided. The method is performed by a first network element or a second network element, and the method includes:

[0013] sending or receiving configuration information of the reference signal;

[0014] The reference signal is transmitted via a first link; and the target device receiving the configuration information is a device outside the first link.

[0015] According to another aspect of an embodiment of the present application, a device for configuring a reference signal is provided, the device including:

[0016] A sending module, configured to send the configuration information of the reference signal to a target device;

[0017] The reference signal is transmitted via a first link; and the target device is a device outside the first link.

[0018] According to another aspect of an embodiment of the present application, a device for configuring a reference signal is provided, the device including:

[0019] a transceiver module, configured to send or receive configuration information of the reference signal;

[0020] The reference signal is transmitted via a first link; and the target device receiving the configuration information is a device outside the first link.

[0021] According to another aspect of an embodiment of the present application, a device for configuring a reference signal is provided, the device including:

[0022] a transceiver module, configured to send or receive configuration information of the reference signal;

[0023] The reference signal is transmitted via a first link; and the target device receiving the configuration information is a device outside the first link.

[0024] According to another aspect of an embodiment of the present application, a communication device is provided, comprising a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program to implement the above-mentioned reference signal configuration method.

[0025] According to another aspect of an embodiment of the present application, a computer-readable storage medium is provided, in which a computer program is stored. The computer program is configured to be executed by a processor to implement the above-mentioned reference signal configuration method.

[0026] According to another aspect of an embodiment of the present application, a chip is provided, which includes a programmable logic circuit and / or program instructions, and when the chip is running, is used to implement the above-mentioned reference signal configuration method.

[0027] According to another aspect of an embodiment of the present application, a computer program product or computer program is provided, wherein the computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and a processor reads and executes the computer instructions from the computer-readable storage medium to implement the above-mentioned reference signal configuration method.

[0028] The technical solutions provided in the embodiments of the present application can bring the following beneficial effects:

[0029] By sending the configuration information of the reference signal to the target device, the target device outside the first link where the reference signal is located can obtain the configuration information of the reference signal, so that the target device can measure the reference signal, avoiding the situation where the target device cannot measure the reference signal, and improving the measurement effect of the reference signal in the collaborative sensing scenario or the hybrid positioning scenario. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] FIG1 is a schematic diagram of a communication network architecture provided by one embodiment of the present application;

[0032] FIG2 is a schematic diagram of a network architecture of a collaborative sensing scenario provided by an embodiment of the present application;

[0033] FIG3 is a schematic diagram of a network architecture for a hybrid positioning scenario provided by an embodiment of the present application;

[0034] FIG4 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0035] FIG5 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0036] FIG6 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0037] FIG7 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0038] FIG8 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0039] FIG9 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0040] FIG10 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0041] FIG11 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0042] FIG12 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0043] FIG13 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0044] FIG14 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0045] FIG15 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0046] FIG16 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0047] FIG17 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0048] FIG18 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0049] FIG19 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0050] FIG20 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0051] FIG21 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0052] FIG22 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0053] FIG23 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application;

[0054] FIG24 is a block diagram of a reference signal configuration apparatus provided by one embodiment of the present application;

[0055] FIG25 is a block diagram of a reference signal configuration apparatus provided by one embodiment of the present application;

[0056] FIG26 is a block diagram of a reference signal configuration apparatus provided by one embodiment of the present application;

[0057] Figure 27 is a structural diagram of a communication device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0058] To make the objectives, technical solutions, and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings. Exemplary embodiments will be described in detail herein, with examples shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0059] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. It is known to those skilled in the art that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems. The terms used in this disclosure are merely for the purpose of describing specific embodiments and are not intended to limit this disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0060] It should be understood that although the terms first, second, etc. may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, a first parameter may also be referred to as a second parameter, and similarly, a second parameter may also be referred to as a first parameter without departing from the scope of this disclosure. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0061] FIG1 shows a schematic diagram of a communication network architecture provided by an exemplary embodiment of the present application. The communication network architecture may include: a core network 11 , an access network 12 , and a terminal 13 .

[0062] The core network 11 includes several core network devices. The functions of the core network devices are mainly to provide user connections, user management, and service carrying, and to provide an interface to the external network as a bearer network. For example, the core network of the fifth generation mobile communication technology (5th Generation, 5G) New Radio (New Radio, NR) system may include devices such as the Access and Mobility Management Function (AMF) entity, the User Plane Function (UPF) entity, and the Session Management Function (SMF) entity. Since the radio electromagnetic wave signals used by cellular networks can not only be used for wireless data transmission and communication, but also have environmental perception capabilities, such as user action or gesture recognition, breathing monitoring, terminal movement speed measurement, environmental imaging, weather monitoring, etc. Therefore, in the future, cellular networks can be considered not only for communication and data transmission, but also for the acquisition of perception information.

[0063] Currently, discussions are underway to support sensing capabilities in B5G networks. This will be achieved by adding a sensing control element (SF) and corresponding processes to 3GPP networks. In implementing sensing functions, sensing measurements can be divided into active sensing and passive sensing, depending on the sensing target. Active sensing targets the UE, meaning it is UE-level sensing. Passive sensing targets the target area or object, meaning it is area-level sensing without a specific UE and is not part of 3GPP.

[0064] The access network 12 includes several access network devices 14. The access network in the 5G NR system can be called a new generation radio access network (NG-RAN). The access network device 14 is a device deployed in the access network 12 to provide wireless communication functions for the terminal 13. The access network device 14 may include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems using different wireless access technologies, the names of devices with access network device functions may be different. For example, in the 5G NR system, it is called a 5G base station (Next Generation Node B, gNodeB or gNB). With the evolution of communication technology, the name of "access network device" may change. For the convenience of description, in the embodiments of the present disclosure, the above-mentioned devices that provide wireless communication functions for the terminal 13 are collectively referred to as access network devices.

[0065] There are usually multiple terminals 13, and one or more terminals 13 can be distributed in the cell managed by each access network device 14. The terminal 13 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, as well as various forms of user equipment, mobile stations (MS), etc. For the convenience of description, the devices mentioned above are collectively referred to as terminals. The access network device 14 and the core network device communicate with each other through some air technology, such as the NG interface in the 5G NR system. The access network device 14 and the terminal 13 communicate with each other through some air technology, such as the Uu interface.

[0066] Terminal 13 and terminal 13 (for example, vehicle-mounted equipment and other equipment (such as other vehicle-mounted equipment, mobile phones, road side units (RSU)), etc.)) can communicate with each other through a direct communication interface (such as a PC5 interface). Accordingly, the communication link established based on the direct communication interface can be called a direct link or a side link (SL). SL transmission is the direct communication and data transmission between terminals through a side link. Unlike traditional cellular systems in which communication data is received or sent through access network equipment, SL transmission has the characteristics of short delay and low overhead, and is suitable for communication between two terminals with close geographical locations (such as vehicle-mounted equipment and other peripheral devices with close geographical locations). It should be noted that in Figure 3, only vehicle-to-vehicle communication in the V2X scenario is used as an example, and SL technology can be applied to scenarios in which direct communication is carried out between various terminals. In other words, the terminal in this application refers to any device that communicates using SL technology. The "5G NR system" in the embodiment of the present disclosure may also be referred to as a 5G system or an NR system, but those skilled in the art can understand its meaning. The technical solutions described in the embodiments of this disclosure are applicable to 5G NR systems and to subsequent evolution systems of 5G NR systems. In the embodiments of this disclosure, the terms "UE" and "terminal" have the same meaning and can be used interchangeably.

[0067] First, we introduce the collaborative sensing scenario and the hybrid positioning scenario:

[0068] Collaborative sensing scenario: Communication sensing involves a base station or terminal sending communication signals to detect and estimate targets, determine whether the target exists, and estimate information such as its speed, distance, and direction of arrival. The target can be a human or an object, enabling functions such as detection of human intrusion, movement, or falls, posture recognition, and the creation of three-dimensional object images. Taking into account the presence of multiple communication nodes in a mobile communication network, multiple nodes can communicate and collaborate, leveraging multi-node collaboration to improve sensing performance and achieve multi-node-based collaborative sensing. Figure 2 shows a schematic diagram of the network architecture for a collaborative sensing scenario. (a) Transmitting a reference signal in the uplink shows that a first terminal 22 transmits a reference signal in the uplink, a second terminal 23 and network device 21 measure the reference signal, and sense targets 24 in the environment, achieving collaborative sensing. (b) Transmitting a reference signal in the sidelink shows that a first terminal 22 transmits a reference signal in the sidelink, a second terminal 23 and network device 21 measure the reference signal, and sense targets 24 in the environment, achieving collaborative sensing.

[0069] Hybrid positioning scenario: Hybrid positioning is that the base station and the terminal locate the target terminal based on the Uu interface and the PC5 interface. The target terminal sends a reference signal, and the base station and the terminal measure the target terminal by measuring the reference signal. Figure 3 shows a schematic diagram of the network architecture of the hybrid positioning scenario. The base station 31 and the anchor terminal 33 provide positioning services for the target vehicle terminal 32; the anchor terminal 33 locates the target vehicle terminal 32 through the PC5 interface, and the base station 31 locates the target vehicle terminal 32 through the Uu interface. Similarly, the reference signal sent by the target vehicle terminal 32 is sent in the uplink or sidelink. Exemplarily, the positioning methods used in the hybrid positioning scenario include but are not limited to at least one of the following: Uplink-Time Difference Of Arrival (UL-TDOA), multi-cell round-trip time positioning method (Multi-Round Trip Time, Multi-RTT).

[0070] FIG4 provides a flowchart of a reference signal configuration method provided by an embodiment of the present application. The method is performed by a first terminal, a second terminal, and a target device. The network device in the method can be a device in an access network or a core network. The network device includes a first network element and / or a second network element. The first network element is an access network device, and the second network element is a core network device. The method includes:

[0071] Step 210: The sending device sends configuration information of the reference signal to the target device;

[0072] In this embodiment, the reference signal is used for cooperative sensing or hybrid positioning. The reference signal is transmitted via the first link; the target device is a device outside the first link.

[0073] In some embodiments, the first link is an uplink, and the reference signal is transmitted via the uplink; optionally, the reference signal is transmitted from the first terminal to the first network element or the second network element, and the first link is the uplink between the first terminal and the first network element. Accordingly, the target device is a device outside the first link, such as the second terminal. The transmitting device sends configuration information of the reference signal to the second terminal, for example: the first terminal sends the configuration information of the reference signal to the second terminal via a sidelink, or the first network element or the second network element sends the configuration information of the reference signal to the second terminal via a downlink.

[0074] In some embodiments, the first link is a sidelink, and the reference signal is transmitted via the sidelink. Alternatively, the reference signal is transmitted from a first terminal to a second terminal, and the first link is a sidelink between the first terminal and the second terminal. Accordingly, the target device is a device outside the first link, such as a first network element or a second network element. The transmitting device transmits configuration information for the reference signal to the first network element or the second network element, for example, the first terminal or the second terminal transmits configuration information for the reference signal to the first network element or the second network element.

[0075] Exemplarily, the first network element is an access network device, such as a gNB. The second network element is a core network device, such as any one of a Location Management Function (LMF), an Access and Mobility Management Function (AMF), and a Sensing Function (SF).

[0076] It is understandable that this application only limits the target device to devices outside the first link; that is, the device receiving the configuration information is not on the first link. There is no restriction on the sender of the configuration information (or sending device). The sender is usually located on the first link and can be the sender or receiver of the reference signal on the first link. Of course, the sender of the configuration information can also be outside the first link, such as the LMF.

[0077] Step 220: The target device receives configuration information of the reference signal;

[0078] Correspondingly, the target device receives the configuration information of the reference signal sent by the sending device and measures the reference signal based on the configuration information of the reference signal to implement cooperative sensing or hybrid positioning.

[0079] To sum up, the method provided in this embodiment enables the target device outside the first link where the reference signal is located to obtain the configuration information of the reference signal by sending the configuration information of the reference signal to the target device, thereby enabling the target device to measure the reference signal, avoiding the situation where the target device cannot measure the reference signal, and improving the measurement effect of the reference signal in collaborative sensing scenarios or hybrid positioning scenarios.

[0080] This application includes at least two scenarios: the first link is an uplink, or the first link is a sidelink. The following introduces the two scenarios respectively.

[0081] For the case where the first link is an uplink:

[0082] The target device includes a second terminal, and the device that sends configuration information to the target device includes: a first terminal, a first network element, or a second network element. The following describes the above terminals and network devices respectively:

[0083] FIG5 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a first terminal and includes:

[0084] Step 212: The first terminal sends configuration information of a reference signal to the target device;

[0085] Exemplarily, this embodiment is executed by a first terminal, and the target device in this embodiment is a second terminal, that is, the first terminal sends configuration information of a reference signal to the second terminal.

[0086] Exemplarily, the reference signal is transmitted through the first link, for example, the first link is an uplink; the target device is a device outside the first link, and the reference signal is sent by the first terminal to the first network element or the second network element through the uplink.

[0087] Since the second terminal also needs to measure the reference signal in the case of cooperative sensing or hybrid positioning, the first terminal sends the configuration information of the reference signal to the second terminal via the sidelink.

[0088] Exemplarily, the first terminal sends configuration information of the reference signal to the target device, where the configuration information includes at least one of information related to time-frequency resources of the reference signal and information related to measurement of the reference signal.

[0089] In some embodiments, the configuration information of the reference signal includes a first configuration and a second configuration. The first terminal sends the first configuration and the second configuration to the second terminal. It should be noted that the first configuration and the second configuration are merely based on the division of configuration types. The first terminal can carry the first configuration and the second configuration through a single signaling, or can split the first configuration and the second configuration and send them to the target device through multiple signalings.

[0090] Exemplarily, the first configuration is used to indicate the time-frequency resources for the first terminal to send a reference signal, the second configuration is used to indicate the configuration for the second terminal to measure the reference signal, the second configuration is used to indicate the configuration of the measurement interval, and the measurement interval is used to indicate the time window for the second terminal to measure the reference signal.

[0091] The first configuration and the second configuration are used to indicate the time-frequency resources for sending the reference signal by the first terminal and the configuration for measuring the reference signal by the second terminal, respectively. The first configuration is used for the second terminal to determine the time-frequency resources of the reference signal to facilitate the second terminal to measure the reference signal. The second configuration is used to indicate the measurement method of the reference signal by the second terminal.

[0092] In an optional design, the first configuration includes but is not limited to at least one of the following:

[0093] Time domain length information of the reference signal; for example, the time domain length information of the reference signal is indicated by the number of consecutive Orthogonal Frequency Division Multiplexing (OFDM) symbols occupied by the reference signal resource.

[0094] The time domain starting position of the reference signal; used to indicate the starting position of the time domain resources in the transmission resources occupied by the reference signal.

[0095] Frequency domain starting position of the reference signal; used to indicate the starting position of the frequency domain resources in the transmission resources occupied by the reference signal.

[0096] Reference signal transmission period: used to indicate the interval at which the reference signal is periodically transmitted.

[0097] In another optional design, the second configuration includes but is not limited to at least one of the following:

[0098] Measurement interval length (mgl): used to indicate the length of the measurement interval in the time domain.

[0099] Measurement interval repetition period (mgrp): used to indicate the interval time between the start positions of adjacent measurement intervals when periodically measuring the reference signal.

[0100] The measurement interval timing advance (mgta) indicates the time before the subframe boundary at the beginning of the measurement interval to start measurement. In one example, the measurement interval timing advance is 0ms, 0.25ms, 0.5ms, or 0.75ms.

[0101] The time domain offset of the measurement gap (gapOffset) is used to indicate the offset between the start position of the measurement gap and the reference position. Optionally, the reference position can be a position such as symbol 0 in a subframe or time slot.

[0102] It should be noted that the second terminal measures the reference signal within the measurement interval, and the time window corresponding to the measurement interval includes one or more reference signals.

[0103] To sum up, the method provided in this embodiment enables the second terminal outside the uplink where the reference signal is located to determine the configuration information of the reference signal by sending the configuration information of the reference signal to the second terminal, so as to facilitate the second terminal to measure the reference signal, avoid the situation where the second terminal is unable to measure the reference signal, and improve the measurement effect of the reference signal in the collaborative sensing scenario or the hybrid positioning scenario.

[0104] FIG6 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a network device. The network device in the method may be a device in an access network or a core network. The network device includes a first network element and a second network element. The method includes:

[0105] Step 214: The first network element or the second network element sends configuration information of the reference signal to the target device;

[0106] This embodiment is performed by a first network element or a second network element; the first network element includes a gNB; the second network element includes any one of an LMF, an AMF, and a SF. In this embodiment, the target device is a second terminal. That is, the first network element or the second network element sends reference signal configuration information to the second terminal.

[0107] Exemplarily, the reference signal is transmitted through the first link, for example, the first link is an uplink; the target device is a device outside the first link, and the reference signal is sent by the first terminal to the first network element or the second network element.

[0108] Since the second terminal also needs to measure the reference signal in the case of cooperative sensing or hybrid positioning, the first network element or the second network element sends configuration information of the reference signal to the second terminal via a downlink.

[0109] Exemplarily, the first network element or the second network element sends configuration information of the reference signal to the target device, where the configuration information includes at least one of information related to time-frequency resources of the reference signal and information related to measurement of the reference signal.

[0110] In some embodiments, the configuration information of the reference signal includes a first configuration and a second configuration. The first network element or the second network element sends the first configuration and the second configuration to the second terminal. Similar to the above, the first configuration and the second configuration are merely divided based on the configuration type. The first network element or the second network element can carry the first configuration and the second configuration via a single signaling message, or can split the first configuration and the second configuration and send them to the target device via multiple signaling messages. For an introduction to the first configuration and the second configuration, please refer to the embodiment of Figure 5 above and will not be repeated in this embodiment.

[0111] In an optional design, this embodiment further includes the following steps:

[0112] The first network element receives the first measurement result;

[0113] Exemplarily, the first measurement result is obtained by the second terminal measuring the reference signal based on the first configuration and the second configuration; the second terminal measures the reference signal within a measurement interval, and the time window corresponding to the measurement interval includes one or more reference signals.

[0114] In an optional design, the first measurement result includes but is not limited to at least one of the following information of the reference signal: reference signal received power (RSRP), delay, Doppler shift, channel information, distance, speed, direction, and acceleration.

[0115] The first network element reports the first measurement result to the second network element;

[0116] Exemplarily, the second network element includes any one of an LMF, an AMF, and an SF. The first network element reports the first measurement result to the second network element. Correspondingly, the second network element receives the first measurement result sent by the first network element.

[0117] To sum up, the method provided in this embodiment enables the second terminal outside the uplink where the reference signal is located to determine the configuration information of the reference signal by sending the configuration information of the reference signal to the second terminal, so as to facilitate the second terminal to measure the reference signal, avoid the situation where the second terminal is unable to measure the reference signal, and improve the measurement effect of the reference signal in the collaborative sensing scenario or the hybrid positioning scenario.

[0118] FIG7 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a second terminal and includes:

[0119] Step 222: The second terminal receives configuration information of the reference signal;

[0120] This embodiment is executed by the second terminal, and the target device in this embodiment is the second terminal. That is, the second terminal receives the configuration information of the reference signal. The sender of the configuration information is the first terminal, the first network element, or the second network element.

[0121] Exemplarily, the reference signal is transmitted through the first link, for example, the first link is an uplink; the target device is a device outside the first link, and the reference signal is sent by the first terminal to the first network element or the second network element.

[0122] The second terminal receives the configuration information of the reference signal sent by the first terminal via a sidelink. Alternatively, the second terminal receives the configuration information of the reference signal sent by the first network element or the second network element via a downlink.

[0123] Exemplarily, the second terminal receives configuration information of the reference signal, where the configuration information includes at least one of information related to time-frequency resources of the reference signal and information related to measurement of the reference signal.

[0124] In some embodiments, the reference signal configuration information includes a first configuration and a second configuration. The second terminal receives the first configuration and the second configuration. Similar to the above, the first configuration and the second configuration are merely divided based on configuration type. The first configuration and the second configuration received by the second terminal can be carried in a single signaling or in multiple signalings. For an introduction to the first and second configurations, please refer to the embodiment of Figure 5 above and will not be repeated in this embodiment.

[0125] In an optional design, this embodiment further includes the following steps:

[0126] The second terminal measures the reference signal based on the first configuration and the second configuration to obtain a first measurement result;

[0127] Exemplarily, the second terminal measures the reference signal within a measurement interval, and a time window corresponding to the measurement interval includes one or more reference signals.

[0128] The second terminal sends the first measurement result to the first network element.

[0129] Exemplarily, the first network element is an access network device, such as a gNB. The first measurement result is a measurement result of the second terminal on the reference signal.

[0130] In an optional design, the first measurement result includes but is not limited to at least one of the following information of the reference signal: RSRP, delay, Doppler shift, channel information, distance, speed, direction, and acceleration.

[0131] To sum up, the method provided in this embodiment receives the configuration information of the reference signal through the second terminal, so that the second terminal other than the uplink where the reference signal is located determines the configuration information of the reference signal, so as to facilitate the second terminal to measure the reference signal, avoid the situation where the second terminal cannot measure the reference signal, and improve the measurement effect of the reference signal in the collaborative sensing scenario or the hybrid positioning scenario.

[0132] FIG8 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a first terminal, a second terminal, and a network device. The network device in the method may be a device in an access network or a core network. The network device includes a first network element and a second network element. The method includes:

[0133] Step 310: The first network element, the second network element, or the first terminal sends the first configuration and the second configuration to the second terminal;

[0134] The first network element is an access network device, such as a gNB. The second network element is a core network device, such as any one of the LMF, AMF, and SF.

[0135] In some embodiments, when the first terminal is a vehicle-mounted terminal, the second terminal is implemented as a road side unit (RSU); or, both the first terminal and the second terminal are vehicle-mounted terminals.

[0136] In some embodiments, when a first terminal sends reference signal configuration information to a second terminal, all or part of the reference signal configuration information on the first terminal side comes from the first network element or the second network element; after receiving the reference signal configuration information sent by the first network element or the second network element, the first terminal forwards the reference signal configuration information to the second terminal. Illustratively, the reference signal configuration information includes a first configuration and a second configuration.

[0137] The first configuration is used to indicate the time-frequency resources for transmitting a reference signal by the first terminal. The time-frequency resources of the reference signal are scheduled by the first network element or the second network element to the first terminal. The reference signal is transmitted on uplink resources. The first terminal transmits the reference signal to the network device on the uplink resources, and the reference signal also needs to be received by the second terminal. The first terminal transmits the first configuration to the second terminal, enabling the second terminal to determine the time-frequency resources of the reference signal, thereby facilitating the second terminal's reception of the reference signal.

[0138] The second configuration is used to indicate a configuration for the second terminal to measure the reference signal. The second configuration is used to indicate a configuration of a measurement interval, where the measurement interval indicates a time window for the second terminal to measure the reference signal.

[0139] Step 320: The second terminal receives the first configuration and the second configuration;

[0140] Exemplarily, the first configuration is used to indicate the time-frequency resources for the first terminal to send a reference signal, and the second configuration is used to indicate the configuration for the second terminal to measure the reference signal.

[0141] Step 330: The second terminal determines a time-frequency resource of a reference signal based on the first configuration, and the second terminal measures the reference signal based on the second configuration;

[0142] Exemplarily, the second terminal measures the reference signal to obtain a first measurement result, and the first measurement result includes but is not limited to at least one of the following information of the reference signal: reference signal received power (RSRP), delay, Doppler shift, channel information, distance, speed, direction, and acceleration.

[0143] The first measurement result is used for cooperative sensing or hybrid positioning.

[0144] To summarize, the method provided in this embodiment, through the first configuration and the second configuration, respectively indicates the time-frequency resources for the first terminal to send the reference signal, and the configuration for the second terminal to measure the reference signal; the first configuration is used by the second terminal to determine the time-frequency resources of the reference signal, so as to facilitate the second terminal to measure the reference signal; the second configuration is used to indicate the measurement method of the reference signal by the second terminal; avoids the situation where the reference signal cannot be measured, and improves the measurement effect of the reference signal.

[0145] FIG9 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a first terminal, a second terminal, and a network device. The network device in the method may be a device in an access network or a core network. The network device includes a first network element and a second network element. The method includes:

[0146] Step 702: The first network element or the second network element sends a first configuration to the first terminal;

[0147] Exemplarily, the first configuration is used to indicate a time-frequency resource for the first terminal to send a reference signal, where the reference signal is carried and sent on an uplink resource.

[0148] Exemplarily, the first network element includes a gNB; and the second network element includes any one of an LMF, an AMF, and an SF. That is, the gNB, the AMF, the SF, or the LMF sends a first configuration to the first terminal, where the first configuration is used to indicate a time-frequency resource for the first terminal to send a reference signal. Accordingly, the first terminal receives the first configuration sent by the network device (gNB, AMF, SF, or LMF).

[0149] Exemplarily, the first configuration includes but is not limited to: at least one of the time domain length information of the reference signal, the time domain starting position of the reference signal, the frequency domain starting position of the reference signal, and the transmission period of the reference signal.

[0150] Step 704: The first network element, the second network element, or the first terminal sends the first configuration and the second configuration to the second terminal;

[0151] Exemplarily, the second configuration is used to indicate a configuration in which the second terminal measures a reference signal.

[0152] Exemplarily, the second configuration includes but is not limited to at least one of the following: the length of the measurement interval, the repetition period of the measurement interval, the timing advance of the measurement interval, and the time domain offset of the measurement interval.

[0153] Exemplarily, the measurement gap is used for the second terminal to measure a reference signal sent by the first terminal during the measurement gap. Further, the reference signal is an uplink reference signal.

[0154] Exemplarily, within the measurement interval, the second terminal does not process the downlink channel of the second terminal and the signal in the downlink channel. The second terminal performs co-frequency, inter-frequency, or inter-system measurement within the configured measurement interval to measure the reference signal sent by the first terminal. Exemplarily, the time window corresponding to the measurement interval includes one or more reference signals.

[0155] It should be noted that, when the first terminal sends the first configuration and the second configuration to the second terminal, the second configuration is first configured to the first terminal by the first network element or the second network element, and then sent or configured by the first terminal to the second terminal.

[0156] Step 706: The first terminal sends a reference signal;

[0157] Exemplarily, the first terminal sends a reference signal on the time-frequency resources indicated by the first configuration.

[0158] Step 708: The second terminal measures the reference signal to obtain a terminal measurement result;

[0159] Exemplarily, the second terminal measures the reference signal within the measurement interval based on the received first configuration and second configuration to obtain a terminal measurement result. Exemplarily, the second terminal measures the reference signal, and the obtained terminal measurement result is also referred to as a first measurement result.

[0160] Exemplarily, the terminal measurement result includes but is not limited to at least one of the following information of the reference signal: RSRP, delay, Doppler shift, channel information, distance, speed, direction, and acceleration.

[0161] Step 710: The first network element measures a reference signal to obtain a base station measurement result;

[0162] Exemplarily, the first network element measures the reference signal to obtain a base station measurement result. It is understood that the reference signal measurements performed by the first network element and the second terminal are independent of each other, and the terminal measurement result and the base station measurement result may be the same or different. Exemplarily, the base station measurement result obtained by the first network element measuring the reference signal is also referred to as a second measurement result.

[0163] Exemplarily, the base station measurement result includes but is not limited to at least one of the following information of the reference signal: RSRP, delay, Doppler shift, channel information, distance, speed, direction, and acceleration.

[0164] Step 712: The first network element reports the base station measurement result to the second network element;

[0165] Exemplarily, the gNB reports the base station measurement results to the AMF / SF / LMF.

[0166] Step 714: The second terminal reports the terminal measurement result to the first network element;

[0167] Exemplarily, the second terminal reports the terminal measurement result to the gNB.

[0168] Step 716: The first network element reports the terminal measurement result to the second network element;

[0169] Exemplarily, the gNB reports the received terminal measurement result to the AMF / SF / LMF. That is, the second terminal reports the terminal measurement result to the AMF / SF / LMF through the gNB.

[0170] Step 718: The second network element integrates the terminal measurement result and the base station measurement result to obtain a sensing result;

[0171] Exemplarily, the AMF / SF / LMF integrates the terminal measurement results and base station measurement results generated by the second terminal and the gNB to obtain a sensing result, thereby implementing collaborative sensing. In some embodiments, the second network element integrates the terminal measurement results and base station measurement results to obtain a positioning result.

[0172] To summarize, the method provided in this embodiment, through the first configuration and the second configuration, respectively indicates the time-frequency resources for the first terminal to send the reference signal, and the configuration for the second terminal to measure the reference signal; the first configuration is used by the second terminal to determine the time-frequency resources of the reference signal, so as to facilitate the second terminal to measure the reference signal; the second configuration is used to indicate the measurement method of the reference signal by the second terminal; avoids the situation where the reference signal cannot be measured, and improves the measurement effect of the reference signal.

[0173] In the case where the first link is an uplink, there are at least four optional designs:

[0174] Optional Design 1: Requesting the terminal information of the second terminal through the first request information;

[0175] Optional Design 2: Requesting the second terminal to measure the reference signal through the second request information;

[0176] Optional design three: requesting the network element information of the first network element through the third request information;

[0177] Optional design four: request the positioning capability information of the first terminal through the fourth request information.

[0178] It is understandable that the above four implementations can be combined in any way to form new embodiments, and this application does not impose any limitation on this.

[0179] Next, the above four implementation methods are introduced respectively. It should be noted that when introducing an implementation method, it is first introduced as a whole through one embodiment, and then introduced separately from different execution entities through two embodiments.

[0180] Optional Design 1: Requesting the terminal information of the second terminal through the first request information;

[0181] FIG10 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a first terminal, a second terminal, and a network device. The network device in the method may be a device in an access network or a core network. The network device includes a first network element and a second network element. The method includes:

[0182] Step 302: The second network element sends a first request message to the second terminal;

[0183] Exemplarily, the first request information is used to request terminal information of the second terminal, where the terminal information includes identity information and / or geographic location information of the second terminal. Optionally, the terminal information is information of the second terminal required when measuring a reference signal using a time difference of arrival (TDOA) method.

[0184] In one implementation, the second network element is a LMF, and the second terminal is an anchor terminal (Anchor UE).

[0185] In one implementation, the second network element sends Long Term Evolution Positioning Protocol (LPP) or Sidelink Positioning Protocol (SLPP) signaling to the second terminal, where the LPP or SLPP signaling carries first request information; the LPP or SLPP signaling belongs to the LPP or SLPP Anchor UE Information Exchange process. In one implementation, the Sidelink Positioning Protocol in this application may also be referred to as Ranging / Sidelink Positioning Protocol (RSPP).

[0186] Step 302a: The second terminal receives the first request information sent by the second network element;

[0187] Correspondingly, the second network element sends the first request information to the second terminal, and the second terminal receives the first request information sent by the second network element.

[0188] Step 304: The second terminal sends a first response message to the second network element;

[0189] Exemplarily, the first response information carries terminal information of the second terminal, and the terminal information includes identity information and / or geographic location information of the second terminal.

[0190] In one implementation, the second network element sends LPP or SLPP signaling to the second terminal, where the LPP or SLPP signaling carries first response information; the LPP or SLPP signaling belongs to an LPP or SLPP Anchor UE information exchange process.

[0191] In one implementation, the second terminal determines, based on the first request information sent by the second network element, whether the second terminal itself can become a sensing node, that is, whether to participate in measuring the reference signal. If the second terminal is determined to be able to become a sensing node and participate in measuring the reference signal, the second terminal sends first response information to the second network element. The first response information is further used to instruct the second terminal to participate in measuring the reference signal.

[0192] Step 304a: The second network element receives the first response information sent by the second terminal;

[0193] Corresponding to the second terminal sending the first response information to the second network element, the second network element receives the first response information sent by the second terminal.

[0194] Step 310: The first network element, the second network element, or the first terminal sends reference signal configuration information to the second terminal;

[0195] Exemplarily, the second terminal measures the reference signal based on the configuration information of the reference signal; optionally, the configuration information includes a first configuration and a second configuration; the first configuration is used to indicate the time-frequency resources for the first terminal to send the reference signal, and the second configuration is used to indicate the configuration for the second terminal to measure the reference signal.

[0196] Step 320: The second terminal receives configuration information of the reference signal;

[0197] Correspondingly, the second terminal receives the first configuration and the second configuration sent by the first network element, the second network element or the first terminal.

[0198] It should be noted that step 302a, step 304, and step 320 in this embodiment can be independently implemented as an embodiment of the second terminal; step 302, step 304a, and step 310 can be independently implemented as an embodiment of the first network element or the second network element.

[0199] To sum up, the method provided in this embodiment obtains the terminal information of the second terminal through the first request information, and the second terminal determines whether to measure the reference signal through the first request information and reports it to the second network element; it avoids the situation where the reference signal cannot be measured and improves the measurement effect of the reference signal.

[0200] Optional Design 2: Requesting the second terminal to measure the reference signal through the second request information;

[0201] FIG11 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a first terminal, a second terminal, and a network device. The network device in the method may be a device in an access network or a core network. The network device includes a first network element and a second network element. The method includes:

[0202] Step 310: The first network element, the second network element, or the first terminal sends reference signal configuration information to the second terminal;

[0203] Exemplarily, the second terminal measures the reference signal based on the configuration information of the reference signal; optionally, the configuration information includes a first configuration and a second configuration; the first configuration is used to indicate the time-frequency resources for the first terminal to send the reference signal, and the second configuration is used to indicate the configuration for the second terminal to measure the reference signal.

[0204] Step 320: The second terminal receives configuration information of the reference signal;

[0205] Correspondingly, the second terminal receives the first configuration and the second configuration sent by the first network element, the second network element or the first terminal.

[0206] Step 332: The second network element sends a second request message to the second terminal;

[0207] Exemplarily, the second request information is used to request the second terminal to measure the reference signal.

[0208] In an optional implementation, the reference signal includes a sounding reference signal (SRS). Furthermore, the second request information is used to request the second terminal to measure the SRS using a first method, including but not limited to measuring the SRS using at least one of uplink time difference of arrival (UL-TDOA), multi-cell round-trip time (Multi-RTT), and uplink angle of arrival (UL-AoA).

[0209] In one implementation, the second network element is a LMF, and the second terminal is an anchor terminal (Anchor UE).

[0210] In one implementation, the second network element sends LPP or SLPP signaling to the second terminal, where the first request information carried in the LPP or SLPP signaling is location request information (Request Location Information).

[0211] Step 332a: The second terminal receives the second request information sent by the second network element;

[0212] Correspondingly, the second network element sends the second request information to the second terminal, and the second terminal receives the second request information sent by the second network element.

[0213] Step 334: The second terminal measures the SRS based on the first configuration and the second configuration to obtain a first measurement result;

[0214] Measuring the SRS sent by the first terminal within the second terminal measurement interval; the obtained first measurement result is an uplink (Uplink, UL) TDOA measurement result;

[0215] The first measurement result includes but is not limited to at least one of the following: uplink relative time of arrival (UL Relative Time of Arrival, UL RTOA) and UL-SRS-RSRP.

[0216] Step 336: The second terminal sends location information carrying the first measurement result to the second network element.

[0217] In one implementation, the second terminal sends LPP or SLPP to the second network element, where the location information carried in the LPP or SLPP signaling is provided location information (Provide Location Information), and the provided location information indicates that there is a first measurement result.

[0218] Optionally, the second terminal sends terminal information of the second terminal to the second network element, where the terminal information includes identity information and / or geographic location information of the second terminal. In one implementation, the second terminal sends the terminal information when the second terminal does not send the first response information.

[0219] Step 336a: The second network element receives the location information carrying the first measurement result sent by the second terminal.

[0220] Corresponding to the second terminal sending the location information carrying the first measurement result to the second network element, the second network element receives the location information carrying the first measurement result sent by the second terminal.

[0221] It should be noted that step 320, step 332a, step 334, and step 336 in this embodiment can be independently implemented as an embodiment of the second terminal; step 310, step 332, and step 336a can be independently implemented as an embodiment of the first network element or the second network element.

[0222] In summary, the method provided in this embodiment requests the second terminal to measure the SRS in TDOA mode through the second request information, thereby avoiding the situation where the reference signal cannot be measured and improving the measurement effect of the reference signal.

[0223] Optional design three: requesting the network element information of the first network element through the third request information;

[0224] FIG12 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a first terminal, a second terminal, and a network device. The network device in the method may be a device in an access network or a core network. The network device includes a first network element and a second network element. The method includes:

[0225] Step 306: The second network element sends a third request message to the first network element;

[0226] Illustratively, the third request information is used to request network element information of the first network element; the network element information includes at least one of network element identity information, a physical cell ID (PCI), a global cell ID (GCI), and geographic location information. Furthermore, the network element information is information of the first network element required for measuring a reference signal using a TDOA method.

[0227] In one implementation, the second network element is an LMF and the first network element is a gNB.

[0228] In one implementation, the second network element sends NRPPa signaling to the first network element, where the NRPPa signaling carries the third request information; the NRPPa signaling belongs to the NRPPa Transmission and Receiving Point (TRP) information exchange process.

[0229] Step 306a: The first network element receives the third request information sent by the second network element;

[0230] Corresponding to the second network element sending the third request information to the first network element, the first network element receives the third request information sent by the second network element.

[0231] Step 308: The first network element sends third response information to the second network element;

[0232] Exemplarily, the third response information carries network element information of the first network element.

[0233] In one implementation, the first network element sends NRPPa signaling to the second network element, where the NRPPa signaling carries third response information; the NRPPa signaling belongs to the NRPPa information exchange process.

[0234] In one implementation, the first network element determines, based on the third request information sent by the second network element, whether the first network element itself can become a sensing node, that is, whether to participate in measuring the reference signal. If it is determined that the first network element can become a sensing node and participate in measuring the reference signal, the first network element sends a third response information to the second network element. The first response information is further used to instruct the first network element to participate in measuring the reference signal.

[0235] Step 308a: The second network element receives the third response information sent by the first network element;

[0236] Corresponding to the first network element sending the third response information to the second network element, the second network element receives the third response information sent by the first network element.

[0237] Step 310: The first network element, the second network element, or the first terminal sends reference signal configuration information to the second terminal;

[0238] Exemplarily, the second terminal measures the reference signal based on the configuration information of the reference signal; optionally, the configuration information includes a first configuration and a second configuration; the first configuration is used to indicate the time-frequency resources for the first terminal to send the reference signal, and the second configuration is used to indicate the configuration for the second terminal to measure the reference signal.

[0239] Step 320: The second terminal receives configuration information of the reference signal;

[0240] Correspondingly, the second terminal receives the first configuration and the second configuration sent by the first network element, the second network element or the first terminal.

[0241] It should be noted that step 306a, step 308, and step 310 in this embodiment can be independently implemented as an embodiment of the first network element; step 306, step 308a, and step 310 can be independently implemented as an embodiment of the second network element.

[0242] To sum up, the method provided in this embodiment obtains the network element information of the first network element through the third request information. The first network element determines whether to measure the reference signal through the third request information and reports it to the second network element; it avoids the situation where the reference signal cannot be measured and improves the measurement effect of the reference signal.

[0243] Optional design four: request the positioning capability information of the first terminal through the fourth request information.

[0244] FIG13 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a first terminal, a second terminal, and a network device. The network device in the method may be a device in an access network or a core network. The network device includes a first network element and a second network element. The method includes:

[0245] Step 309a: The second network element sends fourth request information to the first terminal;

[0246] Exemplarily, the fourth request information is used to request positioning capability information of the first terminal. In one implementation, the second network element is a LMF.

[0247] In one implementation, the second network element sends LPP or SLPP signaling to the first terminal, where the fourth request information carried in the LPP or SLPP signaling is capability transfer information.

[0248] Step 309b: The first terminal receives the fourth request information sent by the second network element;

[0249] Corresponding to the second network element sending the fourth request information to the first terminal, the first terminal receives the fourth request information sent by the second network element.

[0250] Step 309c: The first terminal sends fourth response information to the second network element;

[0251] Exemplarily, the fourth response information carries positioning capability information of the first terminal.

[0252] In one implementation, the first terminal sends LPP or SLPP signaling to the second network element, and the fourth response information carried in the LPP or SLPP signaling is capability transfer information.

[0253] Step 309d: The second network element receives the fourth response information sent by the first terminal;

[0254] Corresponding to the first terminal sending the fourth response information to the second network element, the second network element receives the fourth response information sent by the first terminal. Exemplarily, the second network element determines a measurement method for the reference signal according to the positioning capability information of the first terminal.

[0255] Step 310: The first network element, the second network element, or the first terminal sends reference signal configuration information to the second terminal;

[0256] Exemplarily, the second terminal measures the reference signal based on the configuration information of the reference signal; optionally, the configuration information includes a first configuration and a second configuration; the first configuration is used to indicate the time-frequency resources for the first terminal to send the reference signal, and the second configuration is used to indicate the configuration for the second terminal to measure the reference signal.

[0257] Step 320: The second terminal receives configuration information of the reference signal;

[0258] Correspondingly, the second terminal receives the first configuration and the second configuration sent by the first network element, the second network element or the first terminal.

[0259] It should be noted that step 309b, step 309c, and step 310 in this embodiment can be independently implemented as an embodiment of the first terminal; step 309a, step 309d, and step 310 can be independently implemented as an embodiment of the second network element.

[0260] To sum up, the method provided in this embodiment obtains the positioning capability information of the first terminal through the fourth request information, and the second network element determines the measurement method of the reference signal based on the positioning capability information of the first terminal; avoids the situation where the reference signal cannot be measured, and improves the measurement effect of the reference signal.

[0261] FIG14 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a first terminal, a second terminal, and a network device. The network device in the method may be a device in an access network or a core network. The network device includes a first network element and a second network element. The method includes:

[0262] Exemplarily, the first terminal includes a target UE, the second terminal includes an anchor UE, the first network element includes gNB1 in the serving base station, and gNB2 and gNB3 in the neighboring base stations, and the second network element includes an LMF.

[0263] 0. The LMF obtains the TRP information required for UL-TDOA positioning through the NRPPa TRP Information Exchange process, such as at least one of the TRP ID, PCI, GCI, and geographic location information. The LMF obtains the anchor UE information required for UL-TDOA positioning through a similar process, such as at least one of the UE ID and geographic location information.

[0264] 1. The LMF may request the positioning capability information of the target UE through the LPP Capability Transfer procedure. Alternatively, the LMF may request the positioning capability information of the anchor UE through the LPP or SLPP Capability Transfer procedure.

[0265] 2. The LMF sends an NRPPa positioning request information (POSITIONING INFORMATION REQUEST) message to the serving base station to request the UL-SRS configuration information of the target UE.

[0266] 3. The serving base station gNB1 determines the resources used for the UL-SRS and configures a UL-SRS resource set for the target UE. The UL-SRS resource set is used to indicate the configuration information of the UL-SRS sent by the target UE.

[0267] 3a. UL-SRS configuration information includes: at least one of the number of consecutive OFDM symbols occupied by the reference signal resource, the time domain starting position, the frequency domain starting position, and the transmission period.

[0268] 4. The serving base station gNB1 provides UL information to the LMF in the NRPPa Positioning Information RESPONSE message. The UL information includes the UL-SRS configuration information of the target UE.

[0269] 5. In the case of semi-persistent or aperiodic SRS, the LMF requests activation of the target UE's UL-SRS transmission by sending an NRPPa Positioning Activation Request message to the serving base station gNB1. Serving base station gNB1 activates the target UE's UL-SRS transmission and sends an NRPPa Positioning Activation Response message. The target UE initiates UL-SRS transmission based on the time domain resources specified in the UL-SRS resource configuration.

[0270] 6. The LMF provides the selected gNB with the target UE’s UL-SRS configuration information in the NRPPa MEASUREMENT REQUEST message. The message contains all the information required for the gNBs / TRPs to perform UL measurements.

[0271] 7. The LMF sends LPP or SLPP assistance data information (Provide Assistance Data) to the anchor UE. The information contains the information required for the anchor UE to measure the UL-SRS sent by the target UE, including the UL-SRS configuration information of the target UE and the measurement gap configuration information. The measurement gap is used by the anchor UE to measure the UL-SRS reference signal sent by the target UE.

[0272] Exemplarily, the UL-SRS configuration information is referred to as a first configuration, and the measurement interval configuration information is referred to as a second configuration; the auxiliary data information carries the first configuration and / or the second configuration.

[0273] Exemplarily, within the measurement interval, the anchor UE does not process the downlink channels and signals of the anchor UE. The anchor UE may perform intra-frequency, inter-frequency or inter-system measurements within a time window within the configured measurement interval to measure the UL-SRS reference signal sent by the target UE.

[0274] Exemplarily, the measurement interval configuration includes at least one of: a measurement interval length, a measurement interval repetition period, a measurement interval timing advance, and a measurement interval time domain offset. Exemplarily, the time window described by the measurement interval configuration includes one or more UL-SRS reference signals.

[0275] 8. The LMF sends an LPP or SLPP location request message (Request Location Information) to the anchor UE to request the UL-TDOA measurement to be performed.

[0276] 9a. The anchor UE measures the UL-SRS reference signal sent by the target UE within the measurement interval and obtains the UL-TDOA measurement result;

[0277] 9b. Each gNB measures the UL-SRS reference signal transmitted by the target UE and obtains a UL-TDOA measurement result. Exemplarily, the measurement result includes, but is not limited to, at least one of UL-RTOA and UL-SRS-RSRP.

[0278] 10. The anchor UE reports the UL-SRS measurement results of UL-TDOA to the LMF through LPP or SLPP location provision information (Provide Location Information).

[0279] 11. Each gNB reports the UL-SRS measurement results of UL-TDOA to the LMF through the NRPPa Measurement Response message.

[0280] 12.LMF sends an NRPPa positioning deactivation (POSITIONING DEACTIVATION) message to the serving base station gNB1.

[0281] Optionally, LMF performs UL-TDOA positioning solution based on the UL-TDOA measurement results generated by the gNB and anchor UE to obtain the target UE position.

[0282] To summarize, the method provided in this embodiment, through the first configuration and the second configuration, respectively indicates the time-frequency resources for the first terminal to send the reference signal, and the configuration for the second terminal to measure the reference signal; the first configuration is used by the second terminal to determine the time-frequency resources of the reference signal, so as to facilitate the second terminal to measure the reference signal; the second configuration is used to indicate the measurement method of the reference signal by the second terminal; avoids the situation where the reference signal cannot be measured, and improves the measurement effect of the reference signal.

[0283] Next, the activation indication, deactivation indication, and measurement reporting configuration are introduced. It can be understood that the two embodiments below can be applied to the case where the first link is an uplink, and can also be applied to the case where the first link is a sidelink.

[0284] FIG15 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a second terminal and includes:

[0285] Step 230: The second terminal sends or receives configuration information of a reference signal;

[0286] Exemplarily, the configuration information is information related to a reference signal; the reference signal is transmitted via a first link; and the first link is an uplink or a sidelink. When a second terminal sends the configuration information for the reference signal, the recipient of the configuration information is a device outside the first link. When a second terminal receives the configuration information for the reference signal, the recipient of the configuration information is the second terminal, which is a device outside the first link.

[0287] Step 232a: The second terminal receives an activation indication of the configuration information;

[0288] Exemplarily, the activation indication is used to activate the configuration information of the reference signal; optionally, the configuration information activated by the activation indication is at least one of multiple configuration information of the reference information. Exemplarily, the second terminal measures the reference signal after receiving the activation indication. In one implementation, the second terminal measures the reference signal in a non-periodic or semi-continuous manner. Furthermore, the activation indication is sent in at least one of the following signaling: Medium Access Control Control Element (MAC CE), Downlink Control Information (DCI), and Sidelink Control Information (SCI).

[0289] The activation indication in this embodiment includes, but is not limited to, being sent by at least one of the first terminal, the first network element, or the second network element to the second terminal. Accordingly, the first terminal sends an activation indication of configuration information to the second terminal, where the activation indication is used to activate the configuration information of the reference signal; and the first network element or the second network element sends an activation indication of configuration information to the second terminal, where the activation indication is used to activate the configuration information of the reference signal.

[0290] Step 232b: The second terminal receives a deactivation instruction of the configuration information;

[0291] Exemplarily, the deactivation indication is used to deactivate configuration information of a reference signal; optionally, the configuration information deactivated by the deactivation indication is at least one of multiple configuration information of the reference signal. Exemplarily, after receiving the deactivation indication, the second terminal stops measuring the reference signal. Similarly, the deactivation indication is sent in at least one of the following signaling: MAC CE, DCI, or SCI.

[0292] The activation indication in this embodiment includes, but is not limited to, being sent by at least one of the first terminal, the first network element, or the second network element to the second terminal. Accordingly, the first terminal sends a deactivation indication of configuration information to the second terminal, where the deactivation indication is used to deactivate the configuration information of the reference signal; and the first network element or the second network element sends a deactivation indication of configuration information to the second terminal, where the deactivation indication is used to deactivate the configuration information of the reference signal. It will be understood that the first terminal typically sends an activation indication and / or a deactivation indication after sending the configuration information of the reference signal; and the first network element or the second network element typically sends an activation indication and / or a deactivation indication after sending or receiving the configuration information of the reference signal.

[0293] It should be noted that step 232a and step 232b in this embodiment can be freely combined to form new embodiments with step 230. This embodiment only shows a typical embodiment, including the above three steps. New embodiments can also be formed by combining step 230 with step 232a, or combining step 230 with step 232b.

[0294] To sum up, the method provided in this embodiment activates and / or deactivates the configuration information of the reference signal through activation indication and / or deactivation indication, so that the second terminal can measure the reference signal in a non-periodic or semi-continuous manner, thereby improving the measurement effect of the reference signal.

[0295] FIG16 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a second terminal and includes:

[0296] Step 230: The second terminal sends or receives configuration information of a reference signal;

[0297] Exemplarily, the configuration information is information related to a reference signal; the reference signal is transmitted via a first link; and the first link is an uplink or a sidelink.

[0298] When the second terminal sends reference signal configuration information, the receiver of the configuration information is a device outside the first link. When the second terminal receives reference signal configuration information, the receiver of the configuration information is the second terminal, which is a device outside the first link.

[0299] Step 234a: The second terminal receives the measurement reporting configuration;

[0300] Exemplarily, the measurement reporting configuration is configured to instruct the second terminal to report the first measurement result if the first measurement result satisfies a measurement reporting condition; for example, the measurement reporting condition includes exceeding an RSRP threshold; and the first measurement result is reported if the first measurement result exceeds the RSRP threshold. Exemplarily, the second terminal reports the first measurement result to the first network element or the second network element.

[0301] Exemplarily, the measurement reporting configuration includes but is not limited to being sent by at least one of the first terminal, the first network element, or the second network element to the second terminal. Accordingly, the first terminal, the first network element, or the second network element sends the measurement reporting configuration to the second terminal.

[0302] In one implementation, the measurement reporting configuration received by the second terminal belongs to a type of reference signal configuration information; for example, the measurement reporting configuration is configured as a third configuration, and the reference signal configuration information includes the third configuration. Furthermore, the reference signal configuration information received by the second terminal includes the measurement reporting configuration; that is, when the first terminal, the first network element, or the second network element sends the reference signal configuration information to the second terminal, the reference signal configuration information includes the measurement reporting configuration.

[0303] Step 234b: The second terminal measures the reference signal to obtain a first measurement result;

[0304] Exemplarily, the second terminal side measures a reference signal, and the first measurement result is a measurement result of the second terminal on the reference signal.

[0305] Step 234c: If the first measurement result meets the measurement reporting condition, the second terminal reports the first measurement result;

[0306] Exemplarily, based on the indication of the measurement reporting configuration, if the first measurement result meets the measurement reporting condition, the first measurement result is reported. Optionally, if the first measurement result does not meet the measurement reporting condition, the second terminal does not report the first measurement result, and / or the second terminal reports the indication information;

[0307] Exemplarily, the indication information indicates that the first measurement result does not meet the measurement reporting condition. Accordingly, the measurement reporting configuration is further used to instruct the second terminal not to report the first measurement result and / or report the indication information when the first measurement result does not meet the measurement reporting condition.

[0308] It is understandable that this embodiment does not restrict the execution order between step 230 and the first branch. Step 230 can be executed before, after or simultaneously with the first branch. The first branch includes step 234a, step 234b, and step 234c.

[0309] To sum up, the method provided in this embodiment instructs the second terminal to report the first measurement result through measurement reporting configuration, thereby ensuring the measurement effect of the first measurement result received by the first network element or the second network element, and improving the measurement effect of the reference signal in the collaborative sensing scenario or the hybrid positioning scenario.

[0310] For the case where the first link is a sidelink:

[0311] The target device includes a first network element or a second network element, and the device that sends configuration information to the target device includes a first terminal or a second terminal. The following describes the above terminals and network devices respectively:

[0312] FIG17 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a first terminal and includes:

[0313] Step 216: The first terminal sends configuration information of the reference signal to the target device;

[0314] Exemplarily, this embodiment is executed by a first terminal, and the target device in this embodiment is a first network element or a second network element, that is, the first terminal sends reference signal configuration information to the first network element or the second network element.

[0315] Exemplarily, the reference signal is transmitted through the first link, for example, the first link is a sidelink; the target device is a device outside the first link, and the reference signal is sent by the first terminal to the second terminal.

[0316] Exemplarily, the configuration information includes resource configuration of the reference signal; that is, resource configuration for the first terminal to send the reference signal;

[0317] Correspondingly, the first network element or the second network element receives resource configuration of a reference signal, which is carried and sent on the sidelink resource.

[0318] Exemplarily, the first network element is an access network device, such as: gNB. The second network element is a core network device, such as: any one of LMF AMF, SF. In an optional implementation, when the first terminal is a vehicle-mounted terminal, the second terminal is implemented as a road side unit (RSU). Exemplarily, the resource configuration of the reference signal is used to indicate the time and frequency resources for the first terminal to send the reference signal. The time and frequency resources of the reference signal are time and frequency resources selected by the first terminal in the network configuration or pre-configured resource pool. The reference signal is sent to the second terminal on the SL, and the signal needs to be received by the network device at the same time. The resource configuration is sent to the network device, and the resource configuration is used by the network device to determine the time and frequency resources of the reference signal, so as to facilitate the network device to measure the reference signal.

[0319] To sum up, the method provided in this embodiment enables the first network element or the second network element outside the side link where the reference signal is located to determine the configuration information of the reference signal by sending the configuration information of the reference signal to the first network element or the second network element, so as to facilitate the first network element or the second network element to measure the reference signal, avoid the situation where the first network element or the second network element is unable to measure the reference signal, and improve the measurement effect of the reference signal in the collaborative sensing scenario or the hybrid positioning scenario.

[0320] FIG18 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a second terminal and includes:

[0321] Step 218: The second terminal sends configuration information of the reference signal to the target device;

[0322] Exemplarily, this embodiment is executed by the second terminal, and the target device in this embodiment is the first network element or the second network element, that is, the second terminal sends the configuration information of the reference signal to the first network element or the second network element.

[0323] Exemplarily, the reference signal is transmitted through the first link, for example, the first link is a sidelink; the target device is a device outside the first link, and the reference signal is sent by the first terminal to the second terminal.

[0324] To sum up, the method provided in this embodiment enables the first network element or the second network element outside the side link where the reference signal is located to determine the configuration information of the reference signal by sending the configuration information of the reference signal to the first network element or the second network element, so as to facilitate the first network element or the second network element to measure the reference signal, avoid the situation where the first network element or the second network element is unable to measure the reference signal, and improve the measurement effect of the reference signal in the collaborative sensing scenario or the hybrid positioning scenario.

[0325] FIG19 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a network device. The network device in the method may be a device in an access network or a core network. The network device includes a first network element and a second network element. The method includes:

[0326] Step 224: The first network element or the second network element receives configuration information of the reference signal;

[0327] Exemplarily, this embodiment is performed by a first network element or a second network element; the first network element includes a gNB; and the second network element includes any one of an LMF, an AMF, and a SF. In this embodiment, the target device is the first network element or the second network element. That is, the first network element or the second network element receives reference signal configuration information. The sender of the configuration information is the first terminal or the second terminal.

[0328] Exemplarily, the reference signal is transmitted through the first link, for example, the first link is a sidelink; the target device is a device outside the first link, and the reference signal is sent by the first terminal to the second terminal.

[0329] Exemplarily, the configuration information includes a reference signal resource configuration; that is, a resource configuration for receiving the reference signal by the first network element or the second network element. Exemplarily, the reference signal resource configuration indicates the time-frequency resources for transmitting the reference signal by the first terminal. The reference signal time-frequency resources are selected by the first terminal from a network-configured or pre-configured resource pool. The reference signal is transmitted to the second terminal over the SL, and the signal must also be received by the network device.

[0330] In an optional design, it also includes:

[0331] The first network element or the second network element measures the reference signal according to the resource configuration of the reference signal to obtain a second measurement result.

[0332] Furthermore, the second measurement result includes at least one of the following information of the reference signal:

[0333] Reference signal received power, delay, Doppler frequency shift, channel information, distance, speed, direction, acceleration.

[0334] To sum up, the method provided in this embodiment receives the configuration information of the reference signal through the first network element or the second network element, so that the first network element or the second network element other than the side link where the reference signal is located determines the configuration information of the reference signal, so as to facilitate the first network element or the second network element to measure the reference signal, avoids the situation where the first network element or the second network element is unable to measure the reference signal, and improves the measurement effect of the reference signal in the collaborative sensing scenario or the hybrid positioning scenario.

[0335] FIG20 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a first terminal, a second terminal, and a network device. The network device in the method may be a device in an access network or a core network. The network device includes a first network element and a second network element. The method includes:

[0336] Step 360: The first terminal or the second terminal sends resource configuration for a reference signal;

[0337] Correspondingly, the first network element or the second network element receives resource configuration of a reference signal, which is carried and sent on the sidelink resource.

[0338] Exemplarily, the first network element is an access network device, such as a gNB. The second network element is a core network device, such as any one of LMF, AMF, and SF. In an optional implementation, when the first terminal is a vehicle-mounted terminal, the second terminal is implemented as a roadside unit (RSU).

[0339] Exemplarily, the resource configuration for the reference signal indicates the time-frequency resources for transmitting the reference signal by the first terminal. The time-frequency resources for the reference signal are selected by the first terminal from a network-configured or pre-configured resource pool. The reference signal is transmitted to the second terminal over the SL, and the signal also needs to be received by the network device. The resource configuration is sent to the network device, and is used by the network device to determine the time-frequency resources for the reference signal, thereby facilitating the network device's measurement of the reference signal.

[0340] Step 370: The first network element or the second network element receives resource configuration of a reference signal;

[0341] Exemplarily, the resource configuration of the reference signal is used to indicate the time-frequency resources for the first terminal to send the reference signal.

[0342] To summarize, the method provided in this embodiment instructs the first terminal to send the time-frequency resources of the reference signal through the resource configuration of the reference signal. The resource configuration is used by the network device to determine the time-frequency resources of the reference signal, so as to facilitate the network device to measure the reference signal; it avoids the situation where the reference signal cannot be measured, and improves the measurement effect of the reference signal.

[0343] FIG21 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a first terminal, a second terminal, and a network device. The network device in the method may be a device in an access network or a core network. The network device includes a first network element and a second network element. The method includes:

[0344] Step 722: The first terminal selects a time-frequency resource of a reference signal;

[0345] Exemplarily, the first terminal selects time-frequency resources from a network-configured or pre-configured resource pool by resource sensing or random selection for transmitting a reference signal in the SL. Exemplarily, the first network element includes a gNB; and the second network element includes any one of an LMF, an AMF, and a SF.

[0346] Step 724: The first terminal or the second terminal sends a resource configuration of a reference signal to the network device;

[0347] Exemplarily, the first terminal or the second terminal sends a resource configuration for a reference signal; correspondingly, the first network element or the second network element receives the resource configuration for the reference signal. It should be noted that when the second terminal sends the resource configuration to the first network element or the second network element, the resource configuration is typically first sent by the first terminal to the second terminal, and then sent by the second terminal to the first network element or the second network element.

[0348] Step 726: The first terminal sends a reference signal;

[0349] Exemplarily, the first terminal sends a reference signal on the time-frequency resources indicated by the first configuration.

[0350] Step 728: The second terminal measures the reference signal to obtain a terminal measurement result;

[0351] Exemplarily, the second terminal measures the reference signal within the measurement interval based on the received first configuration and second configuration to obtain a terminal measurement result. Exemplarily, the terminal measurement result includes, but is not limited to, at least one of the following information of the reference signal: RSRP, delay, Doppler shift, channel information, distance, speed, direction, and acceleration.

[0352] Step 730: The first network element measures the reference signal to obtain a base station measurement result;

[0353] Exemplarily, the first network element measures the reference signal to obtain a base station measurement result. It is understandable that the reference signal measurements by the first network element and the second terminal are independent of each other, and the terminal measurement result and the base station measurement result may be the same or different.

[0354] Step 732: The first network element reports the base station measurement result to the second network element;

[0355] Exemplarily, the gNB reports the base station measurement results to the AMF / SF / LMF.

[0356] Step 734: The second terminal reports the terminal measurement result to the first network element;

[0357] Exemplarily, the second terminal reports the terminal measurement result to the gNB.

[0358] Step 736: The first network element reports the terminal measurement result to the second network element;

[0359] Exemplarily, the gNB reports the received terminal measurement result to the AMF / SF / LMF. That is, the second terminal reports the terminal measurement result to the AMF / SF / LMF through the gNB.

[0360] Step 738: The second network element integrates the terminal measurement result and the base station measurement result to obtain a sensing result;

[0361] Exemplarily, AMF / SF / LMF obtains a perception result by integrating the terminal measurement results and the base station measurement results generated by the second terminal and the gNB to achieve collaborative perception.

[0362] To summarize, the method provided in this embodiment instructs the first terminal to send the time-frequency resources of the reference signal through the resource configuration of the reference signal. The resource configuration is used by the network device to determine the time-frequency resources of the reference signal, so as to facilitate the network device to measure the reference signal; it avoids the situation where the reference signal cannot be measured, and improves the measurement effect of the reference signal.

[0363] FIG22 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a first terminal, a second terminal, and a network device. The network device in the method may be a device in an access network or a core network. The network device includes a first network element and a second network element. The method includes:

[0364] Step 352: The second network element sends a first request message to the second terminal;

[0365] Exemplarily, the first request information is used to request terminal information of the second terminal, where the terminal information includes identity information and / or geographic location information of the second terminal. Furthermore, the terminal information is information of the second terminal required when measuring the reference signal using the TDOA method.

[0366] In one implementation, the second network element is an LMF, and the second terminal is an anchor terminal.

[0367] In one implementation, the second network element sends LPP or SLPP signaling to the second terminal, where the LPP or SLPP signaling carries the first request information; the LPP or SLPP signaling belongs to an LPP or SLPP Anchor UE information exchange process.

[0368] Step 352a: The second terminal receives the first request information sent by the second network element;

[0369] Correspondingly, the second network element sends the first request information to the second terminal, and the second terminal receives the first request information sent by the second network element.

[0370] Step 354: The second terminal sends a first response message to the second network element;

[0371] Exemplarily, the first response information carries terminal information of the second terminal, where the terminal information includes identity information and / or geographic location information of the second terminal. In one implementation, the second network element sends LPP or SLPP signaling to the second terminal, where the LPP or SLPP signaling carries the first response information; the LPP or SLPP signaling belongs to the LPP or SLPP Anchor UE information exchange process.

[0372] Step 354a: The second network element receives the first response information sent by the second terminal;

[0373] Corresponding to the second terminal sending the first response information to the second network element, the second network element receives the first response information sent by the second terminal.

[0374] Step 356: The second network element sends a third request message to the first network element;

[0375] Exemplarily, the third request information is used to request network element information of the first network element; the network element information includes at least one of network element identity information, PCI, GCI, and geographic location information. Further, the network element information is information of the first network element required when measuring the reference signal using the TDOA method.

[0376] In one implementation, the second network element is an LMF and the first network element is a gNB.

[0377] In one implementation, the second network element sends NRPPa signaling to the first network element, where the NRPPa signaling carries the third request information; the NRPPa signaling belongs to the NRPPa transmitting and receiving point information exchange process.

[0378] Step 356a: The first network element receives the third request information sent by the second network element;

[0379] Corresponding to the second network element sending the third request information to the first network element, the first network element receives the third request information sent by the second network element.

[0380] Step 358: The first network element sends a third response message to the second network element;

[0381] Exemplarily, the third response information carries the network element information of the first network element. In one implementation, the first network element sends NRPPa signaling to the second network element, and the NRPPa signaling carries the third response information; the NRPPa signaling belongs to the NRPPa information exchange process.

[0382] Step 358a: The second network element receives the third response information sent by the first network element;

[0383] Corresponding to the first network element sending the third response information to the second network element, the second network element receives the third response information sent by the first network element.

[0384] Step 359a: The second network element sends a fourth request message to the first terminal;

[0385] Exemplarily, the fourth request information is used to request positioning capability information of the first terminal. In one implementation, the second network element is a LMF.

[0386] In one implementation, the second network element sends LPP or SLPP signaling to the first terminal, where the fourth request information carried in the LPP or SLPP signaling is capability transfer information.

[0387] Step 359b: The first terminal receives the fourth request information sent by the second network element;

[0388] Corresponding to the second network element sending the fourth request information to the first terminal, the first terminal receives the fourth request information sent by the second network element.

[0389] Step 359c: The first terminal sends a fourth response message to the second network element;

[0390] Exemplarily, the fourth response information carries the positioning capability information of the first terminal. In one implementation, the first terminal sends LPP or SLPP signaling to the second network element, and the fourth response information carried in the LPP or SLPP signaling is capability transfer information.

[0391] Step 359d: The second network element receives the fourth response information sent by the first terminal;

[0392] Corresponding to the first terminal sending the fourth response information to the second network element, the second network element receives the fourth response information sent by the first terminal.

[0393] Step 360: The first terminal or the second terminal sends configuration information of a reference signal;

[0394] Exemplarily, the first network element or the second network element measures the reference signal based on the reference signal configuration information; optionally, the configuration information includes a resource configuration; exemplary, the reference signal resource configuration is used to indicate a time-frequency resource for the first terminal to transmit the reference signal. In an optional design, the first terminal transmits the reference signal resource configuration to the first network element or the second network element via a Uu interface on an uplink.

[0395] In an optional design, the first terminal sends the resource configuration of the reference signal to the second terminal on a sidelink through the PC5 interface.

[0396] Step 370: The first network element or the second network element receives configuration information of the reference signal;

[0397] Exemplarily, the first network element or the second network element measures the reference signal based on configuration information of the reference signal; optionally, the configuration information includes resource configuration;

[0398] Corresponding to the resource configuration for sending the reference signal by the first terminal or the second terminal, the resource configuration for receiving the reference signal by the first network element or the second network element.

[0399] Step 382: The second network element sends a second request message to the second terminal;

[0400] In this embodiment, the reference signal includes a Positioning Reference Signal (PRS). Exemplarily, the second request information is used to request the second terminal to measure the PRS using a Time Difference of Arrival (TDOA) method.

[0401] In one implementation, the second network element is an LMF, and the second terminal is an anchor terminal. In one implementation, the second network element sends Long Term Evolution Positioning Protocol signaling to the second terminal, and the first request information carried in the LPP or SLPP signaling is location request information.

[0402] Step 382a: The second terminal receives the second request information sent by the second network element;

[0403] Correspondingly, the second network element sends the second request information to the second terminal, and the second terminal receives the second request information sent by the second network element.

[0404] Step 384: The second terminal measures the SRS based on the first configuration and the second configuration to obtain a first measurement result.

[0405] Measuring the PRS sent by the first terminal within the second terminal measurement interval; the obtained first measurement result is a TDOA measurement result of the uplink;

[0406] The first measurement result includes, but is not limited to, at least one of the following: UL RTOA, UL-SRS-RSRP.

[0407] Step 386: The second terminal sends location information carrying the first measurement result to the second network element.

[0408] In one implementation, the second terminal sends LPP or SLPP signaling to the second network element, where the location information carried in the LPP or SLPP signaling is location provision information, and the location provision information indicates that there is a first measurement result.

[0409] Step 386a: The second network element receives the location information carrying the first measurement result sent by the second terminal.

[0410] Corresponding to the second terminal sending the location information carrying the first measurement result to the second network element, the second network element receives the location information carrying the first measurement result sent by the second terminal.

[0411] To summarize, the method provided in this embodiment instructs the first terminal to send the time-frequency resources of the reference signal through the resource configuration of the reference signal. The resource configuration is used by the network device to determine the time-frequency resources of the reference signal, so as to facilitate the network device to measure the reference signal; it avoids the situation where the reference signal cannot be measured, and improves the measurement effect of the reference signal.

[0412] FIG23 provides a flowchart of a method for configuring a reference signal according to an embodiment of the present application. The method is performed by a first terminal, a second terminal, and a network device. The network device in the method may be a device in an access network or a core network. The network device includes a first network element and a second network element. The method includes:

[0413] Exemplarily, the first terminal includes a target UE, the second terminal includes an anchor UE, the first network element includes gNB1 in the serving base station, and gNB2 and gNB3 in the neighboring base stations, and the second network element includes an LMF.

[0414] It should be noted that only some steps are introduced in this embodiment. For other steps, please refer to the embodiment corresponding to Figure 25 above, and they will not be repeated in this embodiment.

[0415] 3. The target UE selects time-frequency resources from the network-configured or pre-configured resource pool by resource sensing or random selection to send the SL-PRS reference signal.

[0416] 3a. The target UE or anchor UE sends the target UE's SL-PRS resource configuration to the network device (gNB or LMF). The resource configuration indicates the time-frequency resources on which the SL-PRS reference signal is transmitted by the target UE. The target UE transmits the SL-PRS reference signal to the anchor UE on the selected time-frequency resources. Exemplarily, the resource configuration is sent to the gNB via an RRC message or to the LMF via an LPP or SLPP message.

[0417] 9a. The anchor UE receives and measures the SL-PRS reference signal sent by the target UE and obtains the UL-TDOA measurement result.

[0418] 9b. Each gNB receives and measures the SL-PRS reference signal transmitted by the target UE based on the SL-PRS reference signal resource information reported by the target UE, and obtains a UL-TDOA measurement result. Exemplarily, the measurement result includes, but is not limited to, at least one of UL-RTOA and UL-SRS-RSRP.

[0419] To summarize, the method provided in this embodiment instructs the first terminal to send the time-frequency resources of the reference signal through the resource configuration of the reference signal. The resource configuration is used by the network device to determine the time-frequency resources of the reference signal, so as to facilitate the network device to measure the reference signal; it avoids the situation where the reference signal cannot be measured, and improves the measurement effect of the reference signal.

[0420] Those skilled in the art will appreciate that the above embodiments may be implemented independently, or the above embodiments may be freely combined to create new embodiments, and this application does not impose any restrictions on this.

[0421] The following are device embodiments of the present application, which can be used to implement the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

[0422] FIG24 shows a block diagram of a reference signal configuration apparatus provided by an exemplary embodiment of the present application, the apparatus comprising:

[0423] The sending module 810 is configured to send the configuration information of the reference signal to the target device;

[0424] The reference signal is transmitted via a first link; and the target device is a device outside the first link.

[0425] In an optional design of this embodiment, the target device includes a second terminal, and the first link is an uplink;

[0426] The sending module 810 is also used to: send a first configuration and a second configuration to the second terminal, the first configuration is used to indicate the time-frequency resources for the first terminal to send a reference signal in the uplink, and the second configuration is used to indicate the configuration of a measurement interval, and the measurement interval is used to indicate a time window for the second terminal to measure the reference signal.

[0427] In an optional design of this embodiment, the sending module 810 is further configured to:

[0428] The first configuration and the second configuration are sent to the second terminal on a sidelink.

[0429] In an optional design of this embodiment, the first configuration includes at least one of the following: time domain length information of the reference signal, time domain starting position of the reference signal, frequency domain starting position of the reference signal, and transmission period of the reference signal.

[0430] In an optional design of this embodiment, the second configuration includes at least one of the following:

[0431] The length of the measurement interval, the repetition period of the measurement interval, the timing advance of the measurement interval, and the time domain offset of the measurement interval;

[0432] The second terminal measures the reference signal within the measurement interval.

[0433] In an optional design of this embodiment, the target device includes a first network element or a second network element, and the first link is a sidelink;

[0434] The sending module 810 is further used to: send the resource configuration of the reference signal to the first network element or the second network element, where the resource configuration of the reference signal is used to indicate the time-frequency resources for the first terminal to send the reference signal in the sidelink.

[0435] In an optional design of this embodiment, the sending module 810 is further configured to:

[0436] Sending the resource configuration of the reference signal to the first network element or the second network element on an uplink.

[0437] In an optional design of this embodiment, the sending module 810 is further configured to:

[0438] Sending an activation indication of the configuration information to the second terminal, where the activation indication is used to activate the configuration information of the reference signal;

[0439] and / or, sending a deactivation indication of the configuration information to the second terminal, where the deactivation indication is used to deactivate the configuration information of the reference signal.

[0440] In an optional design of this embodiment, the sending module 810 is further configured to: send a measurement reporting configuration to the second terminal; the measurement reporting configuration is used to instruct the second terminal to report the first measurement result if the first measurement result meets the measurement reporting condition;

[0441] The first measurement result is obtained by the second terminal measuring the reference signal.

[0442] In an optional design of this embodiment, the measurement reporting configuration is further used to instruct the second terminal not to report the first measurement result and / or report indication information when the first measurement result does not meet the measurement reporting condition;

[0443] The indication information indicates that the first measurement result does not meet the measurement reporting condition.

[0444] In an optional design of this embodiment, the reference signal is used for collaborative sensing or hybrid positioning.

[0445] FIG25 shows a block diagram of a reference signal configuration apparatus provided by an exemplary embodiment of the present application, the apparatus comprising:

[0446] The transceiver module 820 is configured to send or receive configuration information of the reference signal;

[0447] The reference signal is transmitted via a first link; and the target device receiving the configuration information is a device outside the first link.

[0448] In an optional design of this embodiment, the target device includes the second terminal, and the first link is an uplink;

[0449] The transceiver module 820 includes: a receiving unit 822, used to receive a first configuration and a second configuration, wherein the first configuration is used to indicate the time-frequency resources for the first terminal to send a reference signal, and the second configuration is used to indicate the configuration of a measurement interval, and the measurement interval is used to indicate the time window for the second terminal to measure the reference signal.

[0450] In an optional design of this embodiment, the first configuration includes at least one of the following: time domain length information of the reference signal, time domain starting position of the reference signal, frequency domain starting position of the reference signal, and transmission period of the reference signal.

[0451] In an optional design of this embodiment, the second configuration includes at least one of the following:

[0452] The length of the measurement interval, the repetition period of the measurement interval, the timing advance of the measurement interval, and the time domain offset of the measurement interval;

[0453] The second terminal measures the reference signal within the measurement interval.

[0454] In an optional design of this embodiment, the device further includes:

[0455] A measuring module 830 is configured to measure the reference signal based on the first configuration and the second configuration to obtain a first measurement result;

[0456] The transceiver module 820 includes a sending unit 824, configured to send the first measurement result to the first network element.

[0457] In an optional design of this embodiment, the first measurement result includes at least one of the following information of the reference signal:

[0458] Reference signal received power, delay, Doppler frequency shift, channel information, distance, speed, direction, acceleration.

[0459] In an optional design of this embodiment, the first configuration and the second configuration are sent by the second network element.

[0460] In an optional design of this embodiment, the target device includes a first network element or a second network element, and the first link is a sidelink;

[0461] The transceiver module 820 includes: a sending unit 824, configured to send the resource configuration of the reference signal to the first network element or the second network element, where the resource configuration of the reference signal is used to indicate the time-frequency resource for the first terminal to send the reference signal.

[0462] In an optional design of this embodiment, the transceiver module 820 includes:

[0463] A receiving unit 822 is configured to receive an activation indication of the configuration information, where the activation indication is used to activate the configuration information of the reference signal;

[0464] And / or, the receiving unit 822 is further configured to receive a deactivation indication of the configuration information, where the deactivation indication is used to deactivate the configuration information of the reference signal.

[0465] In an optional design of this embodiment, the transceiver module 820 includes:

[0466] The receiving unit 822 is configured to receive a measurement reporting configuration, where the measurement reporting configuration is used to instruct the second terminal to report the first measurement result if the first measurement result meets a measurement reporting condition;

[0467] The apparatus further includes a measuring module 830 configured to measure the reference signal to obtain a first measurement result;

[0468] The transceiver module 820 includes a sending unit 824, configured to report the first measurement result if the first measurement result meets the measurement reporting condition.

[0469] In an optional design of this embodiment, the sending unit 824 is further configured to: if the first measurement result does not meet the measurement reporting condition, not report the first measurement result, and / or report the indication information;

[0470] The indication information indicates that the first measurement result does not meet the measurement reporting condition.

[0471] In an optional design of this embodiment, the transceiver module 820 is further configured to:

[0472] receiving first request information sent by a second network element, where the first request information is used to request terminal information of the second terminal;

[0473] Sending first response information to the second network element, where the first response information carries the terminal information of the second terminal;

[0474] The terminal information includes identity information and / or geographic location information of the second terminal.

[0475] In an optional design of this embodiment, the transceiver module 820 is further configured to: receive second request information sent by a second network element, where the second request information is used to request the second terminal to measure the reference signal;

[0476] measuring the reference signal based on the first configuration and the second configuration to obtain a first measurement result;

[0477] The first measurement result is sent to the second network element, where the first measurement result is used for collaborative sensing or hybrid positioning.

[0478] In an optional design of this embodiment, the transceiver module 820 is further used to: send terminal information of the second terminal to the second network element, where the terminal information includes identity information and / or geographic location information of the second terminal.

[0479] FIG26 shows a block diagram of a reference signal configuration apparatus provided by an exemplary embodiment of the present application, the apparatus comprising:

[0480] The transceiver module 840 is configured to send or receive configuration information of the reference signal;

[0481] The reference signal is transmitted via a first link; and the target device receiving the configuration information is a device outside the first link.

[0482] In an optional design of this embodiment, the target device includes a second terminal, and the first link is an uplink;

[0483] The transceiver module 840 includes: a sending unit 844, used to send a first configuration and a second configuration to the second terminal, the first configuration is used to indicate the time-frequency resources for the first terminal to send a reference signal, and the second configuration is used to indicate the configuration of a measurement interval, and the measurement interval is used to indicate a time window for the second terminal to measure the reference signal.

[0484] In an optional design of this embodiment, the first configuration includes at least one of the following: time domain length information of the reference signal, time domain starting position of the reference signal, frequency domain starting position of the reference signal, and transmission period of the reference signal.

[0485] In an optional design of this embodiment, the second configuration includes at least one of the following:

[0486] The length of the measurement interval, the repetition period of the measurement interval, the timing advance of the measurement interval, and the time domain offset of the measurement interval;

[0487] The second terminal measures the reference signal within the measurement interval.

[0488] In an optional design of this embodiment, the transceiver module 840 includes: a receiving unit 842, configured to receive a first measurement result, where the first measurement result is obtained by the second terminal measuring the reference signal based on the first configuration and the second configuration;

[0489] The sending unit 844 is further configured to report the first measurement result to the second network element.

[0490] In an optional design of this embodiment, the first measurement result includes at least one of the following information of the reference signal:

[0491] Reference signal received power, delay, Doppler frequency shift, channel information, distance, speed, direction, acceleration.

[0492] In an optional design of this embodiment, the target device includes the first network element or the second network element, and the first link is a sidelink;

[0493] The transceiver module 840 includes: a receiving unit 842, configured to receive the resource configuration of the reference signal, where the resource configuration of the reference signal is used to indicate the time-frequency resource for the first terminal to send the reference signal.

[0494] In an optional design of this embodiment, the device further includes:

[0495] The measurement module 850 is configured to measure the reference signal according to the resource configuration of the reference signal to obtain a second measurement result.

[0496] In an optional design of this embodiment, the second measurement result includes at least one of the following information of the reference signal:

[0497] Reference signal received power, delay, Doppler frequency shift, channel information, distance, speed, direction, acceleration.

[0498] In an optional design of this embodiment, the transceiver module 840 includes:

[0499] A sending unit 844 is configured to send an activation indication of the configuration information to the second terminal, where the activation indication is used to activate the configuration information of the reference signal;

[0500] And / or, the sending unit 844 is further configured to send a deactivation indication of the configuration information to the second terminal, where the deactivation indication is used to deactivate the configuration information of the reference signal.

[0501] In an optional design of this embodiment, the transceiver module 840 includes:

[0502] The sending unit 844 is configured to send a measurement reporting configuration to the second terminal; the measurement reporting configuration is used to instruct the second terminal to report the first measurement result if the first measurement result meets the measurement reporting condition;

[0503] The first measurement result is obtained by the second terminal measuring the reference signal.

[0504] In an optional design of this embodiment, the measurement reporting configuration is further used to instruct the second terminal not to report the first measurement result and / or report indication information when the first measurement result does not meet the measurement reporting condition;

[0505] The indication information indicates that the first measurement result does not meet the measurement reporting condition.

[0506] In an optional design of this embodiment, the transceiver module 840 is further configured to:

[0507] Sending first request information, where the first request information is used to request terminal information of the second terminal;

[0508] receiving first response information sent by the second terminal, where the first response information carries the terminal information of the second terminal;

[0509] The terminal information includes identity information and / or geographic location information of the second terminal.

[0510] In an optional design of this embodiment, the transceiver module 840 is further configured to:

[0511] Sending second request information, where the second request information is used to request the second terminal to measure the reference signal;

[0512] A first measurement result sent by the second terminal is received, where the first measurement result is used for cooperative sensing or hybrid positioning.

[0513] In an optional design of this embodiment, the transceiver module 840 is further used to: receive terminal information sent by the second terminal, where the terminal information includes identity information and / or geographic location information of the second terminal.

[0514] It should be noted that the device provided in the above embodiment only uses the division of the above-mentioned functional modules as an example to implement its functions. In actual applications, the above-mentioned functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0515] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0516] FIG27 shows a schematic diagram of the structure of a communication device provided by an embodiment of the present application. The communication device may include: a processor 2201 , a receiver 2202 , a transmitter 2203 , a memory 2204 , and a bus 2205 .

[0517] The processor 2201 includes one or more processing cores. The processor 2201 executes various functional applications and information processing by running software programs and modules.

[0518] The receiver 2202 and the transmitter 2203 may be implemented as a transceiver, which may be a communication chip.

[0519] The memory 2204 is connected to the processor 2201 via a bus 2205; illustratively, the processor 2201 can be implemented as a first IC chip, and the processor 2201 and the memory 2204 can be jointly implemented as a second IC chip; the first chip or the second chip can be an application specific integrated circuit (ASIC) chip.

[0520] The memory 2204 may be used to store at least one computer program, and the processor 2201 may be used to execute the at least one computer program to implement the various steps performed by the access point multi-link device in the above method embodiment.

[0521] In addition, the memory 2204 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, and the volatile or non-volatile storage device includes but is not limited to: random-access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other solid-state storage technology, compact disc read-only memory (CD-ROM), high-density digital video disc (DVD) or other optical storage, tape cassettes, magnetic tape, disk storage or other magnetic storage devices.

[0522] An embodiment of the present application further provides a computer-readable storage medium, wherein the storage medium stores a computer program, and the computer program is configured to be executed by a processor of a multi-link device to implement the above-mentioned reference signal configuration method.

[0523] Optionally, the computer-readable storage medium may include: Read-Only Memory (ROM), Random-Access Memory (RAM), Solid State Drives (SSD), or an optical disk, etc. Among them, the random access memory may include Resistance Random Access Memory (ReRAM) and Dynamic Random Access Memory (DRAM).

[0524] An embodiment of the present application further provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip runs on a multi-link device, it is used to implement the above-mentioned reference signal configuration method.

[0525] An embodiment of the present application further provides a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a multi-link device reads and executes the computer instructions from the computer-readable storage medium to implement the above-mentioned reference signal configuration method.

[0526] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0527] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0528] In this document, "plurality" refers to two or more. "And / or" describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates an "or" relationship between the associated objects.

[0529] In addition, the step numbers described in this document only illustrate a possible execution order between the steps. In some other embodiments, the above steps may not be executed in the order of the numbers, such as two steps with different numbers are executed at the same time, or two steps with different numbers are executed in the opposite order of the diagram. The embodiments of the present application are not limited to this.

[0530] Those skilled in the art will appreciate that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0531] The above description is merely an exemplary embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A method for configuring a reference signal, characterized in that: The method is performed by a first terminal, and includes: Sending configuration information of the reference signal to a target device; The reference signal is transmitted via a first link; and the target device is a device outside the first link.

2. The method according to claim 1, characterized in that The target device includes a second terminal, and the first link is an uplink; The sending of the configuration information of the reference signal to the target device includes: A first configuration and a second configuration are sent to the second terminal, where the first configuration is used to indicate the time-frequency resources for the first terminal to send a reference signal in the uplink, and the second configuration is used to indicate the configuration of a measurement interval, and the measurement interval is used to indicate a time window for the second terminal to measure the reference signal.

3. The method according to claim 2, characterized in that The sending the first configuration and the second configuration to the second terminal includes: The first configuration and the second configuration are transmitted to the second terminal on a sidelink.

4. The method according to claim 2 or 3, characterized in that The first configuration includes at least one of the following: The time domain length information of the reference signal, the time domain starting position of the reference signal, the frequency domain starting position of the reference signal, and the transmission period of the reference signal.

5. The method according to any one of claims 2 to 4, characterized in that: The second configuration includes at least one of the following: The length of the measurement interval, the repetition period of the measurement interval, the timing advance of the measurement interval, and the time domain offset of the measurement interval; The second terminal measures the reference signal within the measurement interval.

6. The method according to claim 1, wherein The target device includes a first network element or a second network element, and the first link is a sidelink; The sending of the configuration information of the reference signal to the target device includes: The resource configuration of the reference signal is sent to the first network element or the second network element, where the resource configuration of the reference signal is used to indicate the time-frequency resources for the first terminal to send the reference signal in the sidelink.

7. The method according to claim 6, characterized in that The resource configuration for sending the reference signal to the first network element or the second network element includes: Sending the resource configuration of the reference signal to the first network element or the second network element on an uplink.

8. The method according to any one of claims 1 to 6, characterized in that: The method further comprises: Sending an activation indication of the configuration information to the second terminal, where the activation indication is used to activate the configuration information of the reference signal; and / or, A deactivation indication of the configuration information is sent to the second terminal, where the deactivation indication is used to deactivate the configuration information of the reference signal.

9. The method according to any one of claims 1 to 6, characterized in that: The method further comprises: Sending a measurement reporting configuration to the second terminal; the measurement reporting configuration is used to instruct the second terminal to report the first measurement result when the first measurement result meets the measurement reporting condition; The first measurement result is obtained by the second terminal measuring the reference signal.

10. The method according to claim 9, characterized in that The measurement reporting configuration is further used to instruct the second terminal not to report the first measurement result and / or to report indication information if the first measurement result does not meet the measurement reporting condition; The indication information indicates that the first measurement result does not meet the measurement reporting condition.

11. The method according to any one of claims 1 to 6, characterized in that: The reference signal is used for cooperative sensing or hybrid positioning.

12. A method for configuring a reference signal, characterized in that: The method is performed by the second terminal, and the method includes: sending or receiving configuration information of the reference signal; The reference signal is transmitted via a first link; and the target device receiving the configuration information is a device outside the first link.

13. The method according to claim 12, characterized in that The target device includes the second terminal, and the first link is an uplink; The configuration information for receiving the reference signal includes: A first configuration and a second configuration are received, where the first configuration is used to indicate a time-frequency resource for a first terminal to send a reference signal, and the second configuration is used to indicate a configuration of a measurement interval, where the measurement interval is used to indicate a time window for the second terminal to measure the reference signal.

14. The method according to claim 13, characterized in that The first configuration includes at least one of the following: The time domain length information of the reference signal, the time domain starting position of the reference signal, the frequency domain starting position of the reference signal, and the transmission period of the reference signal.

15. The method according to claim 13 or 14, characterized in that The second configuration includes at least one of the following: The length of the measurement interval, the repetition period of the measurement interval, the timing advance of the measurement interval, and the time domain offset of the measurement interval; The second terminal measures the reference signal within the measurement interval.

16. The method according to any one of claims 13 to 15, characterized in that: The method further comprises: measuring the reference signal based on the first configuration and the second configuration to obtain a first measurement result; Send the first measurement result to the first network element.

17. The method according to claim 16, characterized in that The first measurement result includes at least one of the following information of the reference signal: Reference signal received power, delay, Doppler frequency shift, channel information, distance, speed, direction, acceleration.

18. The method according to any one of claims 13 to 15, characterized in that: The first configuration and the second configuration are sent by a second network element.

19. The method according to claim 12, wherein: The target device includes a first network element or a second network element, and the first link is a sidelink; The configuration information for sending the reference signal includes: The resource configuration of the reference signal is sent to the first network element or the second network element, where the resource configuration of the reference signal is used to indicate the time-frequency resources for the first terminal to send the reference signal.

20. The method according to any one of claims 12 to 19, characterized in that The method further comprises: receiving an activation indication of the configuration information, where the activation indication is used to activate the configuration information of the reference signal; and / or, A deactivation indication of the configuration information is received, where the deactivation indication is used to deactivate the configuration information of the reference signal.

21. The method according to any one of claims 12 to 19, characterized in that The method further comprises: receiving a measurement reporting configuration, where the measurement reporting configuration is used to instruct the second terminal to report the first measurement result if the first measurement result meets a measurement reporting condition; measuring the reference signal to obtain a first measurement result; If the first measurement result meets the measurement reporting condition, report the first measurement result.

22. The method according to claim 21, characterized in that The method further comprises: If the first measurement result does not meet the measurement reporting condition, not reporting the first measurement result and / or reporting indication information; The indication information indicates that the first measurement result does not meet the measurement reporting condition.

23. The method according to any one of claims 12 to 19, characterized in that The method further comprises: receiving first request information sent by a second network element, where the first request information is used to request terminal information of the second terminal; Sending first response information to the second network element, where the first response information carries the terminal information of the second terminal; The terminal information includes identity information and / or geographic location information of the second terminal.

24. The method according to any one of claims 12 to 19, characterized in that The method further comprises: receiving second request information sent by a second network element, where the second request information is used to request the second terminal to measure the reference signal; measuring the reference signal based on the first configuration and the second configuration to obtain a first measurement result; The first measurement result is sent to the second network element, where the first measurement result is used for collaborative sensing or hybrid positioning.

25. The method according to claim 24, characterized in that The method further comprises: Send terminal information of the second terminal to the second network element, where the terminal information includes identity information and / or geographic location information of the second terminal.

26. A method for configuring a reference signal, characterized in that: The method is performed by a first network element or a second network element, and includes: sending or receiving configuration information of the reference signal; The reference signal is transmitted via a first link; and the target device receiving the configuration information is a device outside the first link.

27. The method according to claim 26, characterized in that The target device includes a second terminal, and the first link is an uplink; The configuration information for sending the reference signal includes: A first configuration and a second configuration are sent to the second terminal, where the first configuration is used to indicate the time-frequency resources for the first terminal to send a reference signal, and the second configuration is used to indicate the configuration of a measurement interval, where the measurement interval is used to indicate a time window for the second terminal to measure the reference signal.

28. The method according to claim 27, characterized in that The first configuration includes at least one of the following: The time domain length information of the reference signal, the time domain starting position of the reference signal, the frequency domain starting position of the reference signal, and the transmission period of the reference signal.

29. The method according to claim 27 or 28, characterized in that The second configuration includes at least one of the following: The length of the measurement interval, the repetition period of the measurement interval, the timing advance of the measurement interval, and the time domain offset of the measurement interval; The second terminal measures the reference signal within the measurement interval.

30. The method according to any one of claims 27 to 29, characterized in that The method is performed by the first network element, and the method further includes: receiving a first measurement result, where the first measurement result is obtained by the second terminal measuring the reference signal based on the first configuration and the second configuration; Report the first measurement result to the second network element.

31. The method according to claim 30, wherein The first measurement result includes at least one of the following information of the reference signal: Reference signal received power, delay, Doppler frequency shift, channel information, distance, speed, direction, acceleration.

32. The method according to claim 26, wherein The target device includes the first network element or the second network element, and the first link is a sidelink; The configuration information for receiving the reference signal includes: A resource configuration of the reference signal is received, where the resource configuration of the reference signal is used to indicate a time-frequency resource for a first terminal to send the reference signal.

33. The method according to claim 32, characterized in that The method further comprises: The reference signal is measured according to the resource configuration of the reference signal to obtain a second measurement result.

34. The method according to claim 33, wherein The second measurement result includes at least one of the following information of the reference signal: Reference signal received power, delay, Doppler frequency shift, channel information, distance, speed, direction, acceleration.

35. The method according to any one of claims 26 to 34, characterized in that The method further comprises: Sending an activation indication of the configuration information to the second terminal, where the activation indication is used to activate the configuration information of the reference signal; and / or, A deactivation indication of the configuration information is sent to the second terminal, where the deactivation indication is used to deactivate the configuration information of the reference signal.

36. The method according to any one of claims 26 to 34, characterized in that The method further comprises: Sending a measurement reporting configuration to the second terminal; the measurement reporting configuration is used to instruct the second terminal to report the first measurement result if the first measurement result meets the measurement reporting condition; The first measurement result is obtained by the second terminal measuring the reference signal.

37. The method according to claim 36, wherein The measurement reporting configuration is further used to instruct the second terminal not to report the first measurement result and / or to report indication information if the first measurement result does not meet the measurement reporting condition; The indication information indicates that the first measurement result does not meet the measurement reporting condition.

38. The method according to any one of claims 26 to 34, characterized in that The method is performed by the second network element, and the method further includes: Sending first request information, where the first request information is used to request terminal information of the second terminal; receiving first response information sent by the second terminal, where the first response information carries the terminal information of the second terminal; The terminal information includes identity information and / or geographic location information of the second terminal.

39. The method according to any one of claims 26 to 34, characterized in that The method is performed by the second network element, and the method further includes: Sending second request information, where the second request information is used to request the second terminal to measure the reference signal; A first measurement result sent by the second terminal is received, where the first measurement result is used for cooperative sensing or hybrid positioning.

40. The method according to claim 39, wherein The method further comprises: Receive terminal information sent by the second terminal, where the terminal information includes identity information and / or geographic location information of the second terminal.

41. A reference signal configuration device, characterized in that: The device comprises: A sending module, configured to send the configuration information of the reference signal to a target device; The reference signal is transmitted via a first link; and the target device is a device outside the first link.

42. The device according to claim 41, characterized in that The target device includes a second terminal, and the first link is an uplink; The sending module is further used for: A first configuration and a second configuration are sent to the second terminal, where the first configuration is used to indicate the time-frequency resources for the first terminal to send a reference signal in the uplink, and the second configuration is used to indicate the configuration of a measurement interval, and the measurement interval is used to indicate a time window for the second terminal to measure the reference signal.

43. The device according to claim 42, characterized in that The sending module is further used for: The first configuration and the second configuration are transmitted to the second terminal on a sidelink.

44. The device according to claim 42 or 43, characterized in that The first configuration includes at least one of the following: The time domain length information of the reference signal, the time domain starting position of the reference signal, the frequency domain starting position of the reference signal, and the transmission period of the reference signal.

45. The device according to any one of claims 42 to 44, characterized in that The second configuration includes at least one of the following: The length of the measurement interval, the repetition period of the measurement interval, the timing advance of the measurement interval, and the time domain offset of the measurement interval; The second terminal measures the reference signal within the measurement interval.

46. ​​The device according to claim 41, characterized in that The target device includes a first network element or a second network element, and the first link is a sidelink; The sending module is further used for: The resource configuration of the reference signal is sent to the first network element or the second network element, where the resource configuration of the reference signal is used to indicate the time-frequency resources for the first terminal to send the reference signal in the sidelink.

47. The device according to claim 46, characterized in that The sending module is further used for: Sending the resource configuration of the reference signal to the first network element or the second network element on an uplink.

48. The device according to any one of claims 41 to 46, characterized in that The sending module is further used for: Sending an activation indication of the configuration information to the second terminal, where the activation indication is used to activate the configuration information of the reference signal; and / or, A deactivation indication of the configuration information is sent to the second terminal, where the deactivation indication is used to deactivate the configuration information of the reference signal.

49. The device according to any one of claims 41 to 46, characterized in that The sending module is further used for: Sending a measurement reporting configuration to the second terminal; the measurement reporting configuration is used to instruct the second terminal to report the first measurement result when the first measurement result meets the measurement reporting condition; The first measurement result is obtained by the second terminal measuring the reference signal.

50. The device according to claim 49, characterized in that The measurement reporting configuration is further used to instruct the second terminal not to report the first measurement result and / or to report indication information if the first measurement result does not meet the measurement reporting condition; The indication information indicates that the first measurement result does not meet the measurement reporting condition.

51. The device according to any one of claims 41 to 46, characterized in that The reference signal is used for cooperative sensing or hybrid positioning.

52. A reference signal configuration device, characterized in that: The device comprises: a transceiver module, configured to send or receive configuration information of the reference signal; The reference signal is transmitted via a first link; and the target device receiving the configuration information is a device outside the first link.

53. The device according to claim 52, characterized in that The target device includes the second terminal, and the first link is an uplink; The transceiver module includes: A receiving unit is used to receive a first configuration and a second configuration, wherein the first configuration is used to indicate the time-frequency resources for the first terminal to send a reference signal, and the second configuration is used to indicate the configuration of a measurement interval, and the measurement interval is used to indicate a time window for the second terminal to measure the reference signal.

54. The device according to claim 53, characterized in that The first configuration includes at least one of the following: The time domain length information of the reference signal, the time domain starting position of the reference signal, the frequency domain starting position of the reference signal, and the transmission period of the reference signal.

55. The device according to claim 53 or 54, characterized in that The second configuration includes at least one of the following: The length of the measurement interval, the repetition period of the measurement interval, the timing advance of the measurement interval, and the time domain offset of the measurement interval; The second terminal measures the reference signal within the measurement interval.

56. The device according to any one of claims 53 to 55, characterized in that The device further comprises: a measuring module, configured to measure the reference signal based on the first configuration and the second configuration to obtain a first measurement result; The transceiver module includes a sending unit, configured to send the first measurement result to a first network element.

57. The device according to claim 56, characterized in that The first measurement result includes at least one of the following information of the reference signal: Reference signal received power, delay, Doppler frequency shift, channel information, distance, speed, direction, acceleration.

58. The device according to any one of claims 53 to 55, characterized in that The first configuration and the second configuration are sent by a second network element.

59. The device according to claim 52, characterized in that The target device includes a first network element or a second network element, and the first link is a sidelink; The transceiver module includes: A sending unit is used to send the resource configuration of the reference signal to the first network element or the second network element, where the resource configuration of the reference signal is used to indicate the time-frequency resources for the first terminal to send the reference signal.

60. The device according to any one of claims 52 to 59, characterized in that The transceiver module includes: a receiving unit, configured to receive an activation indication of the configuration information, where the activation indication is used to activate the configuration information of the reference signal; and / or, The receiving unit is further configured to receive a deactivation indication of the configuration information, where the deactivation indication is used to deactivate the configuration information of the reference signal.

61. The device according to any one of claims 52 to 59, characterized in that The transceiver module includes: a receiving unit, configured to receive a measurement reporting configuration, where the measurement reporting configuration is used to instruct the second terminal to report the first measurement result if the first measurement result meets a measurement reporting condition; The device further includes a measuring module, configured to measure the reference signal to obtain a first measurement result; The transceiver module includes a sending unit, configured to report the first measurement result if the first measurement result meets the measurement reporting condition.

62. The device according to claim 61, characterized in that The sending unit is also used to: If the first measurement result does not meet the measurement reporting condition, not reporting the first measurement result and / or reporting indication information; The indication information indicates that the first measurement result does not meet the measurement reporting condition.

63. The device according to any one of claims 52 to 59, characterized in that The transceiver module is also used for: receiving first request information sent by a second network element, where the first request information is used to request terminal information of the second terminal; Sending first response information to the second network element, where the first response information carries the terminal information of the second terminal; The terminal information includes identity information and / or geographic location information of the second terminal.

64. The device according to any one of claims 52 to 59, characterized in that The transceiver module is also used for: receiving second request information sent by a second network element, where the second request information is used to request the second terminal to measure the reference signal; measuring the reference signal based on the first configuration and the second configuration to obtain a first measurement result; The first measurement result is sent to the second network element, where the first measurement result is used for collaborative sensing or hybrid positioning.

65. The device according to claim 64, characterized in that The transceiver module is also used for: Send terminal information of the second terminal to the second network element, where the terminal information includes identity information and / or geographic location information of the second terminal.

66. A reference signal configuration device, characterized in that: The device comprises: a transceiver module, configured to send or receive configuration information of the reference signal; The reference signal is transmitted via a first link; and the target device receiving the configuration information is a device outside the first link.

67. The device according to claim 66, characterized in that The target device includes a second terminal, and the first link is an uplink; The transceiver module includes: A sending unit is used to send a first configuration and a second configuration to a second terminal, where the first configuration is used to indicate the time-frequency resources for the first terminal to send a reference signal, and the second configuration is used to indicate the configuration of a measurement interval, and the measurement interval is used to indicate a time window for the second terminal to measure the reference signal.

68. The device according to claim 67, characterized in that The first configuration includes at least one of the following: The time domain length information of the reference signal, the time domain starting position of the reference signal, the frequency domain starting position of the reference signal, and the transmission period of the reference signal.

69. The device according to claim 67 or 68, characterized in that The second configuration includes at least one of the following: The length of the measurement interval, the repetition period of the measurement interval, the timing advance of the measurement interval, and the time domain offset of the measurement interval; The second terminal measures the reference signal within the measurement interval.

70. The device according to any one of claims 67 to 69, characterized in that The transceiver module includes: A receiving unit, configured to receive a first measurement result, where the first measurement result is obtained by the second terminal measuring the reference signal based on the first configuration and the second configuration; The sending unit is further configured to report the first measurement result to the second network element.

71. The device according to claim 70, characterized in that The first measurement result includes at least one of the following information of the reference signal: Reference signal received power, delay, Doppler frequency shift, channel information, distance, speed, direction, acceleration.

72. The device according to claim 66, characterized in that The target device includes the first network element or the second network element, and the first link is a sidelink; The transceiver module includes: The receiving unit is configured to receive the resource configuration of the reference signal, where the resource configuration of the reference signal is used to indicate the time-frequency resource for the first terminal to send the reference signal.

73. The device according to claim 72, characterized in that The device further comprises: The measurement module is configured to measure the reference signal according to the resource configuration of the reference signal to obtain a second measurement result.

74. The device according to claim 73, characterized in that The second measurement result includes at least one of the following information of the reference signal: Reference signal received power, delay, Doppler frequency shift, channel information, distance, speed, direction, acceleration.

75. The device according to any one of claims 66 to 74, characterized in that The transceiver module includes: a sending unit, configured to send an activation indication of the configuration information to the second terminal, where the activation indication is used to activate the configuration information of the reference signal; and / or, The sending unit is further configured to send a deactivation indication of the configuration information to the second terminal, where the deactivation indication is used to deactivate the configuration information of the reference signal.

76. The device according to any one of claims 66 to 74, characterized in that The transceiver module includes: a sending unit, configured to send a measurement reporting configuration to a second terminal; the measurement reporting configuration is used to instruct the second terminal to report the first measurement result if the first measurement result meets the measurement reporting condition; The first measurement result is obtained by the second terminal measuring the reference signal.

77. The device according to claim 76, characterized in that The measurement reporting configuration is further used to instruct the second terminal not to report the first measurement result and / or to report indication information if the first measurement result does not meet the measurement reporting condition; The indication information indicates that the first measurement result does not meet the measurement reporting condition.

78. The device according to any one of claims 66 to 74, characterized in that The transceiver module is also used for: Sending first request information, where the first request information is used to request terminal information of the second terminal; receiving first response information sent by the second terminal, where the first response information carries the terminal information of the second terminal; The terminal information includes identity information and / or geographic location information of the second terminal.

79. The device according to any one of claims 66 to 74, characterized in that The transceiver module is also used for: Sending second request information, where the second request information is used to request the second terminal to measure the reference signal; A first measurement result sent by the second terminal is received, where the first measurement result is used for cooperative sensing or hybrid positioning.

80. The device according to claim 79, characterized in that The transceiver module is also used for: Receive terminal information sent by the second terminal, where the terminal information includes identity information and / or geographic location information of the second terminal.

81. A communication device, characterized in that The communication device includes a processor and a memory, wherein the memory contains at least one program; the processor is configured to execute the at least one program in the memory to implement the reference signal configuration method described in any one of claims 1 to 40.

82. A computer-readable storage medium, characterized in that The storage medium stores a computer program, and the computer program is used to be executed by a processor to implement the reference signal configuration method according to any one of claims 1 to 40.

83. A chip, characterized in that The chip includes a programmable logic circuit and / or program instructions, and when the chip is running, it is used to implement the reference signal configuration method described in any one of claims 1 to 40 above.

84. A computer program product or a computer program, characterized in that The computer program product or computer program includes computer instructions, which are stored in a computer-readable storage medium. The processor reads and executes the computer instructions from the computer-readable storage medium to implement the reference signal configuration method according to any one of claims 1 to 40.

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