A sidelink positioning measurement reporting method and device

Abstract

The present application discloses a sidelink positioning measurement reporting method, which includes the following steps: The SL PRS resource configuration information is the resource for terminal positioning measurement implemented based on the positioning reference signal configured on the sidelink; The SL positioning measurement reporting channel resource is the PUCCH resource or the PUSCH resource configured by the base station for the anchor terminal and used for reporting the SL terminal positioning measurement result; The SL PRS is the positioning reference signal for SL terminal positioning measurement, which is sent by the target terminal to the anchor terminal; The SL positioning measurement result is the positioning measurement result based on the SL PRS and is sent by the anchor terminal to the base station. The present application also includes a device applying the above method. The present application solves the problem of relatively large delay in reporting positioning measurement quantities, and is particularly applicable to 5G communication systems.

Description

Technical Field

[0001] This application relates to the field of mobile communication technologies, and in particular, to a sidelink positioning measurement reporting method and device. Background Art

[0002] Currently, 5G R18 will support the positioning of terminal devices based on SL (sidelink), where the positioning methods include Multi-RTT (Multi-Station Round-Trip Time), TDOA (Time Difference of Arrival), AOA (Angle of Arrival Measurement Method), and AOD (Angle of Departure Measurement Method). The positioning measurement quantities required in these methods will be measured and obtained based on the positioning reference signal (PRS) or SSB (Single Sideband) / CSI-RS (Channel State Information Reference Signal) configured on the SL. Different from the positioning methods on the Uu uplink and downlink, in the positioning measurement quantity reporting, it only involves the measurement reporting of one target UE (target base station) to the base station or LMF (Large Mode Fiber), or the measurement reporting of multiple TRPs (Total Radiated Power) on the base station side to the LMF. In the positioning method based on SL, if it is network-side positioning, multiple anchor UEs (anchor base stations) need to report relevant positioning measurement quantities to the base station or LMF. The existing methods have a relatively large reporting delay and poor timeliness for the reporting mechanism of anchor UEs to report relevant positioning measurement quantities to the base station or LMF. Summary of the Invention

[0003] This application proposes a sidelink positioning measurement reporting method and device, which solves the problem of relatively large reporting delay of positioning measurement quantities in existing methods, and is particularly applicable to the cellular vehicle-to-everything communication system.

[0004] In a first aspect, this application proposes a sidelink positioning measurement reporting method, including the following steps: The SL PRS resource configuration information is the configuration information of the SL PRS resource position for terminal positioning measurement implemented based on the positioning reference signal configured on the sidelink; the SL positioning measurement reporting channel resource is the PUCCH resource or PUSCH resource used for reporting the SL terminal positioning measurement result; the SL PRS is the positioning reference signal for SL terminal positioning measurement; the SL positioning measurement result is the positioning measurement result based on the SL PRS.

[0005] Preferably, the target terminal obtains the SL PRS resource configuration information through base station configuration or through autonomous channel selection, and the anchor terminal obtains the SL PRS resource configuration information through the base station or the target terminal; the SL positioning measurement reporting channel resource is configured by the base station to the anchor terminal; the SL PRS is sent by the target terminal to the anchor terminal; the SL positioning measurement result is sent by the anchor terminal to the base station.

[0006] Preferably, the method further includes: the target terminal reports to the base station the anchor terminal that sends the SL positioning measurement result.

[0007] Preferably, the method further includes: the target terminal reports to the base station the anchor terminal associated with the target terminal.

[0008] Preferably, the method further includes: the target terminal indicates to the anchor terminal whether to report the SL positioning measurement result.

[0009] Preferably, the SL PRS resource includes at least one of the following: periodic SL PRS resource, semi-persistent SL PRS resource, and aperiodic SL PRS resource.

[0010] Further, if the SL PRS resource configured by the base station for the target terminal is a periodic SL PRS resource or a semi-persistent SL PRS resource, the base station also needs to configure the corresponding activation mode of the periodic SL PRS resource or the activation mode of the semi-persistent SL PRS resource, so that the SL PRS sent by the target terminal and the SL PRS received by the anchor terminal are time-aligned.

[0011] Further, the SL positioning measurement reporting channel resource includes at least one of the following: periodic SL positioning measurement reporting channel resource, semi-persistent SL positioning measurement reporting channel resource, and aperiodic SL positioning measurement reporting channel resource.

[0012] Further, the activation mode of the periodic SL PRS resource on the target terminal side includes: if the anchor terminal obtains the periodic SL PRS resource configuration information through the base station, the base station designates the sending time of the SL PRS; if the anchor terminal obtains the periodic SL PRS resource configuration information through the target terminal, the SL PRS is sent after the target terminal sends the periodic SL PRS resource configuration information; if the base station sends multiple sets of periodic SL PRS resource configuration information through the system information, the target terminal and the anchor terminal directly take effect after receiving the system information.

[0013] Further, the activation mode of the semi-persistent SL PRS resource on the target terminal side includes: if the anchor terminal obtains the semi-persistent SL PRS resource configuration information through the base station, the base station designates the sending time of the SL PRS in the activation signaling of the semi-persistent SL PRS resource configuration information; if the anchor terminal obtains the semi-persistent SL PRS resource configuration information through the target terminal, the SL PRS is sent after the target terminal sends the signaling to activate the semi-persistent SL PRS resource configuration information; after the base station activates the semi-persistent SL PRS resource corresponding to the target terminal through the DCI signaling, the SL PRS is sent on the semi-persistent SL PRS resource.

[0014] Preferably, for the periodic SL positioning measurement reporting channel resource or the semi-persistent SL positioning measurement reporting channel resource, a time slot association relationship is configured for the resource corresponding to the SL PRS.

[0015] Preferably, if the target terminal indicates the periodic SL PRS resource configuration information in a multicast manner and activates the HARQ feedback corresponding to the PSSCH carrying the periodic SL PRS resource configuration information, then after the target terminal receives the corresponding HARQ ACK feedback or there is no NACK feedback, it sends the SL PRS on the periodic SL PRS resource.

[0016] Preferably, if the target terminal indicates the activation of the semi-persistent SL PRS resource configuration information in a multicast manner and activates the HARQ feedback corresponding to the PSSCH of the activation signaling carrying the semi-persistent SL PRS resource configuration information, then after the target terminal receives the corresponding HARQ ACK feedback or there is no NACK feedback, it sends the SL PRS on the semi-persistent SL PRS resource.

[0017] Furthermore, the sidelink positioning measurement reporting method according to any one of the embodiments of the present invention, when used in a base station, includes the following steps: sending the SL positioning measurement reporting channel resource; receiving the SL positioning measurement result.

[0018] Preferably, the sidelink positioning measurement reporting method further includes: sending the SL PRS resource configuration information.

[0019] Furthermore, the sidelink positioning measurement reporting method according to any one of the embodiments of the present invention, when used in a target terminal, includes the following steps: receiving the SL PRS resource configuration information sent by the base station, or autonomously selecting and obtaining the SL PRS resource configuration information through channel listening; sending the SL PRS.

[0020] Furthermore, the sidelink positioning measurement reporting method according to any one of the embodiments of the present invention, when used in an anchor terminal, includes the following steps: receiving the SL positioning measurement reporting channel resource sent by the base station; receiving the SL PRS resource configuration information sent by the base station or the target terminal; sending the SL positioning measurement result to the base station.

[0021] In a second aspect, the present application also proposes a sidelink positioning measurement reporting base station device for the method according to any one of the first aspects of the present application: at least one module in the sidelink positioning measurement reporting base station device is used for at least one of the following functions: determining and sending the SL positioning measurement reporting channel resource; receiving the SL positioning measurement result; sending the SL PRS resource configuration information.

[0022] In a third aspect, the present application further provides a sidelink positioning measurement reporting target terminal device for the method described in any one of the first aspects of the present application: at least one module in the sidelink positioning measurement reporting target terminal device is used for at least one of the following functions: receiving the SL PRS resource configuration information sent by the base station device, or autonomously selecting and obtaining the SL PRS resource configuration information through channel listening; sending the SL PRS.

[0023] In a fourth aspect, the present application further provides a sidelink positioning measurement reporting anchor terminal device for the method described in any one of the first aspects of the present application: at least one module in the sidelink positioning measurement reporting anchor terminal device is used for at least one of the following functions: receiving the SL positioning measurement reporting channel resources sent by the base station device; receiving the SL PRS resource configuration information sent by the base station device or the target terminal device; sending the SL positioning measurement result to the base station.

[0024] The present application further provides a communication device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor. When the computer program is executed by the processor, the steps of the method described in any one of the embodiments of the first aspect of the present application are implemented.

[0025] The present application further provides a computer-readable medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method described in any one of the embodiments of the first aspect of the present application are implemented.

[0026] The present application further provides a mobile communication system, including at least one network device described in any one of the embodiments of the present application and / or at least one terminal device described in any one of the embodiments of the present application.

[0027] The above at least one technical solution adopted in the embodiments of the present application can achieve the following beneficial effects:

[0028] The present application designs a sidelink positioning reporting method, designs the process of SL positioning measurement and the main signaling in the process, which can effectively reduce the delay of the positioning measurement reporting of the anchor UE (terminal) for the target UE, and improve the timeliness of the positioning measurement result. It can effectively reduce the delay of the positioning measurement reporting of the anchor UE for the target UE and improve the timeliness of the positioning measurement result. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0030] FIG. 1(a) is a flowchart of the method according to the embodiment of the method of the present application;

[0031] Figure 1(b) is a schematic diagram of the channel resource association relationship in the method embodiment of the present application;

[0032] Figure 2 This is another embodiment of the method flow of the present application;

[0033] Figure 3 This is a schematic diagram of the base station device embodiment of the present application;

[0034] Figure 4 This is a schematic diagram of the target terminal device embodiment of the present application;

[0035] Figure 5 This is a schematic diagram of the anchor terminal device embodiment of the present application;

[0036] Figure 6 This is a schematic diagram of the structure of the network device according to another embodiment of the present invention;

[0037] Figure 7 This is a block diagram of the terminal device according to another embodiment of the present invention. Detailed implementation manners

[0038] To make the objectives, technical solutions, and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0039] The following will describe in detail the technical solutions provided by each embodiment of the present application in conjunction with the drawings.

[0040] Currently, 5G R18 will support SL-based terminal device positioning. The positioning methods include Multi-RTT, TDOA, AOA, and AOD. The positioning measurement quantities required in these methods will be measured and obtained based on the positioning reference signal (PRS) or SSB / CSI-RS configured on the SL. For the configuration of SL-PRS resources, two modes, namely Mode1 (base station allocation) and Mode2 (terminal autonomous selection), are considered to be supported. Among them, Mode1 is mainly used within the coverage area of the base station. Referring to the positioning methods on the traditional uplink and downlink, the measurement quantities and related reports required in the SL positioning method are summarized as follows.

[0041] Solution 1:

[0042] SL positioning method name: TDOA-SL (refer to TDOA-DL).

[0043] Description of positioning measurement method Mode1: (1) Establish an SL positioning measurement group, including anchor UEs and the target UE; (2) The base station configures SL-PRS resources for the anchor UEs; (3) The anchor UEs send SL-PRS to the target UE (which can be sent on demand or periodically).

[0044] Description of positioning measurement method Mode2: (1) Establish an SL positioning measurement group, including anchor UEs and the target UE; (2) The anchor UEs perform channel listening to obtain SL-PRS resources (which may involve cooperation between UEs); (3) The anchor UEs send SL-PRS to the target UE (which can be sent on demand or periodically).

[0045] Positioning measurement quantity: The target UE receives SL-PRS sent from N anchor UEs, takes one of the anchor UEs as the reference UE, and measures to obtain N - 1 SL-PRS RSTD values (the time difference of arrival of SL-PRS received by the UE from two anchor UEs).

[0046] Positioning measurement report (for network-side positioning): (1) The target UE reports the measured N - 1 SL-PRS RSTD values to the gNB (LMF); (2) The corresponding SL-PRS ID; (3) The corresponding timestamp.

[0047] Solution 2:

[0048] SL positioning method name: TDOA-SL (referring to TDOA-UL).

[0049] Description of positioning measurement method Mode1: (1) Establish an SL positioning measurement group, including anchor UEs and the target UE; (2) The base station configures SL-PRS resources for the target UE; (3) The target UE sends SL-PRS to the anchor UEs (which can be sent on demand or periodically).

[0050] Description of positioning measurement method Mode2: (1) Establish an SL positioning measurement group, including anchor UEs and the target UE; (2) The target UE performs channel listening for SL-PRS resources; (3) The target UE sends SL-PRS to the anchor UEs (which can be sent on demand or periodically).

[0051] Location measurement quantity: N anchor UEs receive the SL-PRS sent from the target UE, and each Anchor UE measures the RTOA (the time difference between the time when the PRS sent by the target UE arrives and the reference time of the Anchor UE itself).

[0052] Location measurement report (for network-side positioning): (1) The N anchor UEs report the measured RTOA to the gNB (LMF), select one of the Anchor UEs as the reference UE, and calculate N-1 TDOA values; (2) Corresponding SL-PRS ID; (3) Corresponding timestamp.

[0053] Solution 3:

[0054] SL positioning method name: MultiRTT-SL (refer to MultiRTT-Uu).

[0055] Description of the location measurement method Mode1: (1) Establish an SL location measurement group, including anchor UEs and the target UE; (2) The base station configures SL-PRS resources for the anchor UEs; (3) The anchor UEs send SL-PRS to the target UE (can be sent on demand or periodically); (4) The target UE sends SL-PRS to the anchor UEs (can be sent on demand or periodically).

[0056] Description of the location measurement method Mode2: (1) Establish an SL location measurement group, including anchor UEs and the target UE; (2) The anchor UEs perform channel listening to obtain SL-PRS resources; the target UE performs channel listening for SL-PRS resources (may involve UE cooperation); (3) The anchor UEs send SL-PRS to the target UE (can be sent on demand or periodically); (4) The target UE sends SL-PRS to the anchor UEs (can be sent on demand or periodically).

[0057] Location measurement quantity: (1) The target UE measures the time difference tUE Rx-Tx between the arrival time of the SL-PRS from the anchor UE and the time of sending the SL-PRS to the anchor UE; (2) The anchor UE measures the time difference aUE Rx-Tx between the arrival time of the SL-PRS from the target UE and the time of sending the SL-PRS to the target UE.

[0058] Location measurement reporting (for network - side positioning): (1) The target UE reports N tUE Rx - Tx time differences to the gNB (LMF); (2) N anchor UEs report aUE Rx - Tx time differences to the gNB (LMF); (3) Corresponding SL - PRS ID; (4) Corresponding timestamp.

[0059] Solution 4:

[0060] SL positioning method name: AoD - SL (refer to AoD - DL).

[0061] Location measurement method description Mode1: (1) Establish an SL positioning measurement group, including anchor UEs and the target UE; (2) The base station configures SL - PRS resources for the anchor UEs; (3) The anchor UEs send SL - PRS to the target UE (can be sent on demand or periodically).

[0062] Location measurement method description Mode2: (1) Establish an SL positioning measurement group, including anchor UEs and the target UE; (2) The anchor UEs perform channel listening to obtain SL - PRS resources (may involve UE - to - UE cooperation); (3) The anchor UEs send SL - PRS to the target UE (can be sent on demand or periodically).

[0063] Location measurement quantity: The target UE receives SL - PRS sent from N anchor UEs and measures the corresponding RSRP.

[0064] Location measurement reporting (for network - side positioning): (1) The target UE reports the measured RSRP and beam - corresponding related angle information to the gNB (LMF); (2) Corresponding SL - PRS ID; (3) Corresponding timestamp.

[0065] Solution 5:

[0066] SL positioning method name: AoA - SL (refer to AoA - UL).

[0067] Location measurement method description Mode1: (1) Establish an SL positioning measurement group, including anchor UEs and the target UE; (2) The base station configures SL - PRS resources for the target UE; (3) The target UE sends SL - PRS to the anchor UEs (can be sent on demand or periodically).

[0068] Description of the positioning measurement method, Mode 2: (1) Establish an SL positioning measurement group, including anchor UEs and the target UE; (2) The target UE listens for SL-PRS resources on the channel; (3) The target UE sends SL-PRS to the anchor UEs (which can be sent on demand or periodically).

[0069] Positioning measurement quantity: The anchor UEs receive the SL-PRS sent from the traget UE and measure the corresponding RSRP.

[0070] Positioning measurement report (for network-side positioning): (1) The anchor UEs report the information of measuring the RSRP of the received SL-PRS and the relevant angle information corresponding to the received beam to the gNB (LMF); (2) The corresponding SL-PRS ID; (3) The corresponding timestamp.

[0071] Different from the positioning method on the Uu uplink and downlink, in its positioning measurement report, it only involves the measurement report of one target UE to the base station or LMF, or the measurement report of multiple TRPs on the base station side to the LMF. In the SL-based positioning method, if it is network-side positioning, multiple anchor UEs are required to report relevant positioning measurement quantities to the base station or LMF, such as the positioning methods TDOA-SL (refer to TDOA-UL), Multi RTT-SL (refer to Multi RTT-Uu), AoA-SL (refer to AoA-UL) in Table 1. At this time, if the anchor UEs use the traditional UE uplink data transmission method for measurement reporting, for example, first send an uplink data transmission request to the base station, and then the base station allocates uplink transmission resources according to the request for measurement reporting, it will increase the positioning measurement delay.

[0072] Figure 1(a) is a flowchart of the method embodiment of the present application, and Figure 1(b) is a schematic diagram of the channel resource association relationship of the method embodiment of the present application.

[0073] The present invention mainly designs the process of SL positioning measurement and the main signaling in the process, and a sidelink positioning measurement reporting method for the scenario where the network controls the target UE to send SL PRS resource allocation and the anchor UE measures and reports.

[0074] In this scenario, the target UE sends SL PRS to one or more anchor UEs, where the SL PRS resources are allocated by the base station, and the anchor UEs perform positioning measurements based on the received SL PRS, such as RTOA (the time difference between the time when the target UE sends PRS to reach the anchor UE and the reference time of the anchor UE itself), RSRP based on the SL PRS measurement, etc. The anchor UEs report the positioning measurement results to the base station through the uplink channel.

[0075] In this scenario, to avoid the scheduling delay introduced by the traditional uplink data transmission through the uplink data transmission resource request and the base station's allocation of uplink data transmission resources, in this embodiment, when the base station allocates SL PRS resources to the target UE, it directly allocates the uplink channel resources for measurement reporting to the anchor UE associated with the target UE.

[0076] A sidelink positioning measurement reporting method specifically includes the following steps 101 to 106:

[0077] Step 101: The target UE obtains the SL PRS resource configuration information through the base station.

[0078] In step 101, the SL PRS resource is a resource for terminal positioning measurement implemented based on the positioning reference signal configured on the sidelink, and is obtained by the target terminal through the base station configuration method.

[0079] In step 101, the target terminal obtains the SL PRS resource configuration information for positioning measurement through the base station. The SL PRS resource includes at least one of the following: periodic SL PRS resource, semi-persistent SL PRS resource, and aperiodic SL PRS resource.

[0080] The periodic SL PRS resource: is configured through RRC (Radio Resource Control) signaling. The periodic SL PRS resource configuration information includes information such as the period of the SL PRS resource, slot offset, symbol position occupied in one slot, and / or frequency domain resource position.

[0081] Preferably, if the SL PRS resource configured by the base station for the target terminal is a periodic SL PRS resource, the base station also needs to configure the corresponding activation method of the periodic SL PRS resource to align the SL PRS sent by the target terminal and the SL PRS received by the anchor terminal in time.

[0082] When the target UE receives the periodic SL PRS resource configured by the base station, the activation method of the periodic SL PRS resource includes one of the following three methods:

[0083] Method 1: If the anchor terminal obtains the periodic SL PRS resource configuration information through the base station, the base station specifies the transmission time of the SL PRS.

[0084] That is, after the effective time of the periodic SL PRS resource specified by the base station, SL PRS is sent on the periodic SL PRS resource. In Method 1, the effective time can be immediately effective after the target UE receives the SL PRS resource configuration information, or effective after a first time interval after receiving the SL PRS resource configuration information. Among them, the first time can be configured as K1 SL time slots. The reason for the effective time after the first time configuration is that the anchor UE requires a certain time overhead to obtain the SL PRS resource configuration information. Where K1 is the number of the first time slots.

[0085] Method 2: If the anchor terminal obtains the periodic SL PRS resource configuration information through the target terminal, then the SL PRS is sent after the target terminal sends the periodic SL PRS resource configuration information.

[0086] That is, it is sent after the target UE sends the periodic SL PRS resource configuration information to the anchor UE through the sidelink. If the target UE indicates its periodic SL PRS resource configuration information to one or more anchor UEs in a multicast manner and activates the HARQ (Hybrid Automatic Repeat reQuest) feedback corresponding to the PSSCH (Physical sidelink share channel) carrying the periodic SL PRS resource configuration information, the target UE can send SL PRS on the periodic SL PRS resource after receiving the corresponding HARQ ACK feedback or no NACK feedback.

[0087] Among them, Method 1 is applicable to the scenario where the base station already knows the anchor UE associated with the target UE, and Method 2 is applicable to the scenario where the base station does not know the anchor UE associated with the target UE and the target UE needs to report the associated anchor UE. And compared with Method 1, in Method 2, the target UE can confirm whether the anchor UE has received the target SL PRS resource configuration information.

[0088] Method 3: If the base station sends multiple sets of periodic SL PRS resource configuration information through the system information, the target terminal and the anchor terminal become effective directly after receiving the system information.

[0089] That is, after the base station configures the SL PRS resources in the system information configuration period, the target UE sends SL-PRS on the corresponding period SL PRS resources. In this method, the purpose of the base station configuring the SL PRS resources in the system information is that the anchor UE and the target UE can obtain the SL PRS resource configuration information through the system information at the same time. N sets of periodic SL PRS resources can be configured in the system information, and which set of resources the target UE uses is determined according to its UE ID, that is, a mapping relationship between the periodic SL PRS resources and the UE ID is established. Each set of SL PRS resources is determined by the time-frequency resource position occupied by the SL PRS, the cyclic shift of the SL PRS generation sequence, etc. After the target UE determines the corresponding periodic SL PRS resource configuration according to its UE ID, it sends SL PRS on the corresponding SL PRS resources. The anchor UE will also perform SLPRS reception detection on the corresponding periodic SL PRS resources according to the target UE ID information it knows.

[0090] The semi-persistent SL PRS resources: are configured through RRC signaling, and the semi-persistent SL PRS resource configuration information includes information such as the period of the SL PRS resources, the slot offset, the symbol position occupied in a slot, and / or the frequency domain resource position.

[0091] After the target UE receives the semi-persistent SL PRS resource configuration information, it also needs to receive the corresponding activation information to make the semi-persistent SL PRS resource configuration take effect, and then uses the semi-persistent SL PRS resources to send SL PRS information.

[0092] The signaling sending method for activating the semi-persistent SL-PRS resources of the target UE is specifically as follows: The base station sends a MAC CE (Media Access Control Control Element) or DCI signaling to the target UE to activate the corresponding semi-persistent SL PRS resources.

[0093] Similar to the periodic SL PRS resources, if the SL PRS resources configured by the base station for the target terminal are semi-persistent SL PRS resources, the base station also needs to configure the corresponding semi-persistent SL PRS resource activation method to align the SL PRS sent by the target terminal and the SL PRS received by the anchor terminal in time.

[0094] After activating the semi-persistent SL PRS resources of the target UE, the semi-persistent SL PRS resource activation method includes one of the following three methods:

[0095] Method 1: If the anchor terminal obtains the semi-persistent SL PRS resource configuration information through the base station, the base station specifies the sending time of the SL PRS.

[0096] That is, after the effective time of the semi-persistent SL PRS resource specified in the base station activation signaling, send the SL PRS on the semi-persistent SL PRS resource. In this method, the effective time is determined according to the second time carried in the activation signaling. If the second time is not carried in the activation signaling, it means that it takes effect immediately after the target UE receives the signaling for activating the semi-persistent SL PRS resource configuration information. Otherwise, it takes effect after an interval of the second time after receiving the activation signaling. Among them, the second time can be configured as K2 SL time slots. The reason for taking effect after configuring the second time is that the anchor UE requires a certain time overhead to obtain and activate the SL PRS resource configuration information. Here, K2 is the number of second time slots.

[0097] Method 2: If the anchor terminal obtains the semi-persistent SL PRS resource configuration information through the target terminal, send the SL PRS after the activation signaling for the target terminal to send the semi-persistent SL PRS resource configuration information.

[0098] That is, send after the target UE activates the semi-persistent SL PRS resource configuration information to the anchor UE through the sidelink. Sending the SL PRS using the activated semi-persistent SL PRS resource can be sent in the same time slot as the activation signaling sent by the target UE to the anchor UE. If the target UE indicates the activation of its semi-persistent SL PRS resource configuration information to one or more anchor UEs in a multicast manner and activates the HARQ feedback corresponding to the PSSCH carrying the semi-persistent SL PRS resource configuration activation signaling, the target UE can also send the SL PRS on the semi-persistent SL PRS resource after receiving the corresponding HARQ ACK feedback or without NACK feedback.

[0099] Similar to the target terminal using the periodic SL PRS resource to send the SL PRS, the above method of using the activated semi-persistent SL PRS resource by Method 1 is applicable to the scenario where the base station directly sends the activation signaling to the anchor UE to activate the semi-persistent SL PRS resource of the target UE. The above Method 2 is applicable to the scenario where the target UE sends the activation signaling to the anchor UE to activate the semi-persistent SL PRS resource of the target UE. Compared with Method 1, in Method 2, the target UE can confirm whether the anchor UE has received the signaling for activating the semi-persistent SL PRS resource of the target UE.

[0100] Method 3: After the base station activates the corresponding semi-persistent SL PRS resource of the target terminal through the multicast DCI (Downlink Control Information) signaling, send the SL PRS on the semi-persistent SL PRS resource.

[0101] That is, after the base station activates the semi-persistent SL PRS resource corresponding to the target UE by using multicast DCI signaling, SL PRS is sent on the semi-persistent SL-PRS resource. In this method, after the base station has sent RRC signaling to configure the semi-persistent SL PRS resource to the target UE and the anchor UE, it sends multicast DCI signaling to the target UE and the anchor UE, and activates the semi-persistent SL PRS resource corresponding to the target UE in this signaling. At this time, the target UE and the anchor UE can simultaneously obtain this activation signaling and activate the corresponding semi-persistent SL PRS resource. After receiving this activation signaling, the target UE uses the activated semi-persistent SL PRS resource to send SL PRS, and the anchor UE receives and detects SL PRS on the activated semi-persistent SL PRS resource after receiving this activation signaling.

[0102] The aperiodic SL-PRS resource: is configured by RRC signaling, and the symbol position occupied in a time slot of the aperiodic SL PRS resource and / or the frequency-domain resource position information are included in the aperiodic SL PRS resource configuration information. The transmission time slot of the aperiodic SL-PRS resource is indicated by the base station through DCI signaling.

[0103] When the target UE receives the aperiodic SL PRS resource configured by the base station, the method for using the aperiodic SL PRS resource to send SLPRS is as follows: The target UE sends in the specified time slot according to the indication of the base station DCI signaling. The DCI signaling includes a third time, that is, after the target UE receives the DCI signaling indicating to use the aperiodic SL PRS resource to send SL PRS, SL PRS is sent after an interval of the third time. The third time may be K3 SL time slots. Here, K3 is the number of the third time slots.

[0104] In steps 102A to 102C, the anchor UE obtains the SL PRS resource configuration information through the target UE or the base station. The specific steps for the anchor UE to obtain the SL PRS resource configuration information through the target UE include steps 102A to 102B, and the specific steps for the anchor UE to obtain the SL PRS resource configuration information through the base station include step 102C.

[0105] Step 102A: The target UE sends the SL PRS resource configuration information to the anchor UE.

[0106] In step 102A, the SL PRS resource configuration information is the configuration information implemented by the base station for the SL PRS resource, and is obtained by the anchor terminal through the target terminal.

[0107] The target UE sends the SL PRS resource configuration information to the anchor UE in a multicast manner through PC5 RRC signaling. The SL PRS resource type includes one or more of the periodic SL PRS resources, semi-persistent SL PRS resources, and aperiodic SL PRS resources described in step 101.

[0108] It should be further noted that if the anchor UE obtains the SL PRS resource configuration information through the target UE, and if it is the periodic SL PRS resource configuration information, the anchor UE activates the periodic SL PRS resource configuration information after receiving the corresponding HARQ ACK (if any) feedback for this information; if it is the semi-persistent SL PRS resource configuration information, the anchor UE activates the semi-persistent SL PRS resource configuration after receiving the corresponding activation signaling sent by the target UE and feedback the corresponding HARQ ACK (if any); if it is the aperiodic SL PRS resource, the anchor UE activates the aperiodic SL PRS resource configuration information after receiving this information.

[0109] Step 102B: Report the anchor terminal associated with the target terminal.

[0110] In step 102B, the target UE reports the associated anchor UE to the base station.

[0111] Since the topology between the target UE and the anchor UE is dynamically changing, as the target UE moves, the associated anchor UE will change. The base station can learn the associated anchor UE through the target UE, which is used for the base station to further actively allocate the uplink channel resources required for the anchor UE to report the positioning measurement results for the target UE.

[0112] It should be noted that step 102B is an optional step.

[0113] Step 102C: The base station sends the SL PRS resource configuration information to the anchor UE.

[0114] In step 102C, the base station sends the UE SL-PRS resource configuration information to the anchor UE. The base station sends the SL PRS resource configuration information to one or more anchor UEs in a unicast or multicast manner through RRC signaling. The SL PRS resource configuration information type includes one or more of the periodic SL PRS resources, semi-persistent SL PRS resources, and aperiodic SL PRS resources described in step 101.

[0115] The base station can learn about the target UE's associated anchor UE in the following ways: either through the target UE's reporting, or the base station pre-configures the anchor UE within its coverage area and allocates PUCCH (Physical Uplink Control Channel) / PUSCH (Physical Uplink Share Channel) resources for measurement reporting. Specifically, the actually measured and reported anchor UE can be indicated to the base station by the target UE based on the measurement results of the SL channel between the target UE and the anchor UE.

[0116] It should be further noted that if the anchor UE obtains the SL PRS resource configuration information through the base station: (1) If it is the periodic SL PRS resource configuration information, the time when the anchor UE receives the information and the periodic SL PRS resource configuration takes effect needs to be aligned with the time when the target UE's periodic SL PRS resource configuration takes effect. That is, if the received periodic SL PRS resource carries the effective time, the effective SL PRS resource on the anchor UE side is aligned with the effective SL PRS resource on the target UE side; or if the anchor UE obtains the periodic SL PRS resource configuration through the system information, it directly takes effect. (2) If it is the semi-persistent SL PRS resource configuration, if the activation signaling is sent by the target UE, the anchor UE will take effect the semi-persistent SL PRS resource configuration after receiving the corresponding activation signaling sent by the target UE. If the activation signaling is sent by the base station, the time when the anchor UE takes effect the semi-persistent SL PRS resource configuration after receiving the activation signaling needs to be aligned with the time when the target UE takes effect the semi-persistent SL PRS resource configuration. That is, if the signaling for activating the semi-persistent SL PRS resource received by the anchor UE carries the effective time, the effective SL PRS resource on the anchor UE side is aligned with the effective SL PRS resource on the target UE side; or if the anchor UE activates the semi-persistent SL PRS resource configuration through the multicast DCI signaling, it directly takes effect the corresponding semi-persistent SL PRS resource configuration after receiving the activation signaling.

[0117] It should be noted that in the SL PRS resource configuration information obtained by the anchor UE in this step and the SL PRS resource configuration information obtained by the target UE in step 101, there is an indication of the same SL PRS resource position. When the anchor UE obtains the SL PRS resource configuration information through the base station, the effective time carried in this information is applied to take effect on the anchor UE side, which is different from the effective time applied to the target UE side in the SL PRS resource configuration information obtained by the target UE through the base station in step 101.

[0118] Step 103: The base station configures SL positioning measurement reporting channel resources for the anchor UE.

[0119] In step 103, the SL positioning measurement reporting channel resource is the PUCCH resource or PUSCH resource configured by the base station for the anchor terminal to report the SL terminal positioning measurement result.

[0120] In step 103, the base station configures the PUCCH / PUSCH resource for the anchor UE to perform positioning measurement reporting according to the SL PRS.

[0121] Furthermore, the SL positioning measurement reporting channel resource includes at least one of the following: periodic SL positioning measurement reporting channel resource, semi-persistent SL positioning measurement reporting channel resource, and aperiodic SL positioning measurement reporting channel resource.

[0122] The periodic SL positioning measurement reporting channel resource is the PUCCH / PUSCH resource for periodic measurement reporting. The base station configures the PUCCH / PUSCH resource information for periodic measurement reporting through RRC signaling, including configuration period, time slot offset, symbol position occupied within a time slot, frequency domain resource position, and other information.

[0123] Optionally, since an anchor UE can be associated with multiple target UEs, that is, the anchor UE may need to measure the SL PRS sent by multiple target UEs and then perform unified measurement reporting, and the target UEs associated with the anchor UE may change dynamically. At the base station side, it is necessary to know which target UEs the measurement reporting result of the anchor UE is for and the corresponding measured SL-PRS resources. Therefore, when designing the SL positioning measurement, the association relationship between the measurement reporting PUCCH / PUSCH resource and the measured target SL-PRS resource can be designed. That is, for the periodic SL positioning measurement reporting channel resource or the semi-persistent SL positioning measurement reporting channel resource, the time slot association relationship with the resource corresponding to the SL PRS is configured.

[0124] The base station configures in the RRC signaling that the minimum time interval between the SL PRS resource on a time slot and the time slot where the PUCCH / PUSCH resource for its measurement reporting is located is the fourth time. Assume that the fourth time is K4 uplink time slots. The anchor UE receives the SL PRS sent by the target terminal on the kth sidelink SL time slot, which corresponds to the nth uplink time slot, and then performs measurement reporting on the n + K4 time slot and the first time slot with the reported PUCCH / PUSCH resource configured thereafter. Among them, k is the first time slot number, n is the second time sequence number, and K4 is the fourth time slot number.

[0125] For example, as shown in Figure 1(b), assume that the period for configuring the measurement reporting PUCCH / PUSCH resources is 4 time slots. For example, the measurement reporting PUCCH / PUSCH resources are configured in the anchor UE's uplink time slots slot4, slot8, slot12, and slot16. The fourth time is configured as 2 UL time slots, that is, after the anchor UE receives the SL PRS sent by the target terminal on the SL, it performs measurement reporting on the first time slot configured with the reporting PUCCH / PUSCH resources after an interval of 2 UL time slots. Since the sidelink SL and uplink UL of the anchor UE may use different subcarrier spacings, as shown in Figure 1(b), according to the fact that the length of the anchor UE's uplink time slot corresponds to 2 sidelink time slot lengths, the sidelink time slots corresponding to the uplink time slots for receiving the SL PRS sent by the target terminal are slot1, slot2, slot4, slot5, slot7, and slot8 respectively, and the corresponding time slots for measurement reporting are slot4, slot4, slot8, slot8, slot12, and slot12 respectively.

[0126] In step 103, the semi-persistent SL positioning measurement reporting channel resource, that is, the PUCCH / PUSCH resource for semi-persistent measurement reporting. The base station configures the PUCCH / PUSCH resource information for semi-persistent measurement reporting for the anchor UE through RRC signaling, including information such as the configuration period, time slot offset, symbol positions occupied within a time slot, and frequency domain resource positions.

[0127] The base station further activates the PUCCH / PUSCH resource corresponding to the semi-persistent measurement reporting through MAC CE or DCI.

[0128] Optionally, after the semi-persistent measurement reporting is activated, the association relationship between the time slot position of the activated periodic or semi-persistent PUCCH / PUSCH resource for measurement reporting and the SL PRS resource sent by the measured target terminal is similar to the above-mentioned periodic measurement reporting, that is, the measured target SL-PRS time slot and the time slot where the corresponding semi-persistent measurement reporting PUCCH / PUSCH resource is located are at least separated by the fourth time.

[0129] The aperiodic SL positioning measurement reporting channel resource, that is, the PUCCH / PUSCH resource for aperiodic measurement reporting. The base station configures the PUCCH / PUSCH resource information for aperiodic measurement reporting for the anchor UE through RRC signaling, including information such as the symbol positions occupied within a time slot and frequency domain resource positions.

[0130] The base station further indicates the time slot position of the PUCCH / PUSCH resource for aperiodic measurement reporting through DCI. The DCI signaling contains a fifth time, and the fifth time can be K5 uplink time slots. The fifth time can be the time interval between the time slot where the anchor UE receives the DCI signaling indicating the PUCCH / PUSCH resource for aperiodic measurement reporting and the time slot where the PUCCH / PUSCH resource for aperiodic measurement reporting is located. Here, K5 is the number of the fifth time slots.

[0131] Step 104: Transmit the SL PRS.

[0132] In step 104, the SL PRS is a positioning reference signal for SL terminal positioning measurement and is sent from the target terminal to the anchor terminal.

[0133] In step 104, the target UE sends the SL PRS to the anchor UE according to the base station configuration. The target UE uses the SL PRS resource configured by the base station in step 101 to send the SL PRS to the anchor UE.

[0134] If the base station configures a periodic SL PRS resource, it periodically transmits the SL PRS at the corresponding resource position after the periodic SL PRS resource becomes effective.

[0135] If the base station configures a semi-persistent SL PRS resource, after the target UE receives the signaling to activate the semi-persistent SL PRS resource, it periodically transmits the SL PRS at the corresponding semi-persistent SL PRS resource position after the resource becomes effective.

[0136] If the base station configures an aperiodic SL PRS resource, after the target UE receives the DCI indicating the aperiodic SL PRS resource, it transmits the SL-PRS at the corresponding resource position.

[0137] Step 105: Report the anchor terminal that sends the SL positioning measurement result.

[0138] In step 105, the target UE reports the anchor UE that feeds back the positioning measurement result to the base station. It should be noted that step 105 is an optional step.

[0139] Optionally, since the topological structure between the target UE and the anchor UE changes as the target UE or the anchor UE moves, the target UE can report the anchor UE that feeds back the positioning measurement result to the base station, and this may be different from the anchor UE associated with the target UE previously known to the base station. Moreover, since the channel states between the target UE and the associated anchor UE are different, the target UE can select the anchor UE with better channel state information for measurement reporting. Thus, the base station can avoid listening to the measurement reports of all anchor UEs associated with the target UE to reduce the detection overhead.

[0140] Further optionally, the target terminal indicates to the anchor terminal whether to report the SL positioning measurement result. The target UE sends a signaling to the anchor UE to indicate its measurement report. The anchor UE that receives this signaling uses the measurement report resources allocated by the base station to measure and report the SL PRS sent by the target UE; the anchor UE that does not receive this signaling does not perform the measurement report, even if this UE receives the measurement report resources allocated by the base station. For the anchor UE, obtaining the measurement report resources allocated by the base station in advance helps to perform the measurement report quickly, that is, once it receives the signaling indicating the measurement report sent by the target UE, it can immediately use this resource to perform the measurement report.

[0141] Step 106: Report the SL positioning measurement result.

[0142] In step 106, the SL positioning measurement result, which is the positioning measurement result based on the SL PRS, is sent by the anchor terminal to the base station.

[0143] In step 106, the anchor UE reports the positioning measurement result based on the SL PRS to the base station according to the base station configuration. In this step, the anchor UE uses the PUCCH / PUSCH resources configured by the base station for measurement reporting in step 103 of this embodiment to report the positioning measurement result based on the SL-PRS sent by the target UE.

[0144] Optionally, if the PUCCH / PUSCH resources for periodic measurement reporting or semi-persistent measurement reporting are configured, the anchor terminal receives the periodically / semi-persistently sent SL PRS sent by the target terminal on the associated sidelink time slot according to step 103, and reports the measurement result.

[0145] If the target UE sends a signaling in step 105 of this embodiment to indicate the anchor UE that needs to perform the measurement report, the anchor UE that receives the signaling indication performs the measurement report in this step, otherwise it does not perform the measurement report.

[0146] It should be noted that when the anchor UE sends the SL PRS to the target UE (the base station allocates the SL PRS resources for the anchor UE) and the target UE performs the measurement report (the base station allocates the measurement report PUCCH / PUSCH resources for the target UE), a process similar to the embodiment of Fig. 1(a) can also be designed, and the roles of the anchor UE and the target UE in the process are interchanged. The difference is that if the anchor UE sends the SL PRS to the target UE, there is no need for the target UE to report the measurement feedback to the anchor UE as in the process of this embodiment. The target UE can obtain the SL PRS configuration resource information of the anchor UE through the base station or the anchor UE.

[0147] Figure 2 This is another embodiment of the method flow of the present application, which is used for the target UE terminal to autonomously select the transmission of SL-PRS resources and the scenario of anchor UE measurement reporting.

[0148] In this scenario, the target UE sends SL PRS to one or more anchor UEs. The SL PRS resources are autonomously selected by the target UE through the terminal. The anchor UE performs positioning measurements based on the received SL PRS, such as RTOA (the time difference between the time when the PRS sent by the target UE reaches the anchor UE and the reference time of the anchor UE itself), and the RSRP based on the SL PRS measurement, etc. The anchor UE reports the positioning measurement results to the base station through the uplink channel. In this scenario, to avoid the scheduling delay introduced by the traditional uplink data transmission requesting uplink data transmission resources and the base station allocating uplink data transmission resources, in this embodiment, when the base station knows the anchor UE, it directly allocates the uplink channel resources for measurement reporting to the anchor UE associated with the target UE.

[0149] A sidelink positioning measurement reporting method specifically includes the following steps 201 to 206:

[0150] Step 201: Report the anchor terminal associated with the target terminal.

[0151] In step 201, the target UE reports the associated anchor UE to the base station. When the base station allocates the PUCCH / PUSCH resources for its positioning measurement reporting to the anchor UE, it needs to know the anchor UE associated with the target UE.

[0152] The way for the base station to know the anchor UE associated with the target UE can be the way reported by the target UE, or the base station pre-sets the anchor UE within the coverage area and allocates the PUCCH / PUSCH resources for measurement reporting to it. The specific anchor UE for actual measurement reporting can be indicated by the target UE to the base station according to the SL channel measurement results between the target UE and the anchor UE.

[0153] It should be noted that step 201 is an optional step. When the anchor UE is default set in the base station coverage area, this step can be skipped.

[0154] Step 202: Configure the SL positioning measurement reporting channel resources.

[0155] Step 202 is the same as step 103.

[0156] In step 202, the base station configures the PUCCH / PUSCH resources for positioning measurement reporting according to the SL PRS to the anchor UE.

[0157] Step 202 is the same as step 103 in that the configured PUCCH / PUSCH resources include three types: periodic, semi-persistent, and aperiodic. The difference is that in step 202, when configuring the periodic / semi-persistent PUCCH / PUSCH resources, the SL PRS reception measurement time slots associated with them are not designed. Since the SL PRS resources are autonomously selected by the terminal according to the channel occupancy situation, the base station cannot know the specific SL-PRS resource positions selected by the target terminal, and thus cannot design the association relationship between the PUCCH / PUSCH resources for measurement reporting and the measurement of SL-PRS (that is, it is impossible to use the association relationship to know the target UE information reported corresponding to the PUCCH / PUSCH resources for measurement reporting).

[0158] Thus, in this embodiment, the base station configures the PUCCH / PUSCH resources for the anchor UE to perform positioning measurement reporting, and the anchor UE uses the configured PUCCH / PUSCH resources to report the latest measurement results to the base station.

[0159] Step 203: Listen to the channel to obtain the SL PRS resources.

[0160] In step 203, the target UE obtains the resources for transmitting the SL-PRS through channel listening. In this step, the target UE adopts the method of autonomous resource selection by the terminal to obtain the resources for transmitting the SL PRS through channel listening, and after obtaining the resources, uses the corresponding resources to transmit the SL PRS.

[0161] To avoid the AGC (Automatic Gain Control) problem and the problem that other UEs cannot listen to the channel occupancy introduced by the target UE only transmitting the SL PRS signal, in this embodiment, it is possible to configure the transmission of only aperiodic SL PRS signals, and the SL PRS cannot be transmitted alone and needs to be transmitted together with the PSCCH and PSSCH to indicate the transmission of the SL-PRS to other terminals.

[0162] Step 204: Transmit the SL PRS.

[0163] Step 204 is the same as step 104.

[0164] Optionally, in the PSCCH / PSSCH channels transmitted together with the SL PRS, it is possible to further indicate the anchor UE of the positioning measurement results reported to the base station.

[0165] Step 205: Report the anchor terminal that transmits the SL positioning measurement results.

[0166] Optionally, since the topology between the target UE and the anchor UE changes as the target UE or the anchor UE moves, the target UE may report to the base station the anchor UE for which positioning measurement results are fed back. This may be different from the anchor UE associated with the target UE previously known to the base station. Moreover, since the channel states between the target UE and the associated anchor UE are different, the target UE may select an anchor UE with better channel state information for measurement reporting. As a result, the base station does not need to listen for measurement reports from all the anchor UEs associated with the target UE, so as to reduce the detection overhead.

[0167] Step 205 is the same as step 105, and step 205 is an optional step.

[0168] Step 206: Report the SL positioning measurement results.

[0169] Step 206 is the same as step 106.

[0170] In step 206, the anchor UE reports to the base station the positioning measurement results based on the SL-PRS according to the base station configuration. In this step, the anchor UE uses the PUCCH / PUSCH resources configured by the base station for measurement reporting in step 202 of this embodiment to report the positioning measurement results based on the SL PRS sent by the target UE. The anchor UE uses the configured PUCCH / PUSCH resources to report the latest measurement results to the base station.

[0171] If in step 204 of this embodiment, the target UE sends a signaling indicating the anchor UE for which measurement reporting is required, the anchor UE receiving the signaling indication performs measurement reporting in this step; otherwise, no measurement reporting is performed.

[0172] It should be noted that when the anchor UE sends the SL-PRS to the target UE (the anchor UE independently selects the SL-PRS resources according to channel listening) and the target UE performs measurement reporting (the base station allocates PUCCH / PUSCH resources for measurement reporting to the target UE), a process similar to that of Figure 2 this embodiment can also be designed, with the roles of the anchor UE and the target UE in the process swapped. The difference is that if the anchor UE sends the SL PRS to the target UE, there is no need for the target UE to report to the base station the anchor UE for measurement feedback as in the process of this embodiment.

[0173] Figure 3 This is a schematic diagram of an embodiment of the base station device of the present application. Using the method of any embodiment of the present application, the sending device is used for: 5G mobile communication.

[0174] At least one module in the sidelink positioning measurement reporting base station device is used for at least one of the following functions: determining and sending the sidelink (SL) positioning measurement reporting channel resources; receiving the SL positioning measurement results; sending the SL physical resource block (PRS) resource configuration information.

[0175] To implement the above technical solution, a network device 400 proposed in this application includes a first sending module 401, a first determining module 402, and a first receiving module 403.

[0176] The first sending module is used for sending the SL PRS resource configuration information; and is also used for sending the SL positioning measurement reporting channel resources.

[0177] The first determining module is used for allocating the SL positioning measurement reporting channel resources; and is also used for allocating the SL PRS resources.

[0178] The first receiving module is used for receiving the SL positioning measurement results; and is also used for receiving the anchor terminal ID that sends the SL positioning measurement results; and is also used for receiving the anchor terminal ID associated with the target terminal.

[0179] The specific methods for implementing the functions of the first sending module, the first determining module, and the first receiving module are as described in the method embodiments of this application, and will not be elaborated here.

[0180] Figure 4 This is a schematic diagram of an embodiment of the target terminal device of this application. Using the method of any one of the embodiments of this application, the sending device is used for: 5G mobile communication.

[0181] At least one module in the sidelink positioning measurement reporting target terminal device is used for at least one of the following functions: receiving the SL PRS resource configuration information sent by the base station device, or obtaining the SL PRS resource configuration information by autonomous selection through channel listening; sending the SL PRS.

[0182] To implement the above technical solution, a terminal device 500 proposed in this application includes a second sending module 501, a second determining module 502, and a second receiving module 503.

[0183] The second sending module is used for sending the SL PRS; and is also used for sending the SL PRS resource configuration information.

[0184] The second determining module is used for obtaining the SL PRS resource configuration information by autonomous selection through channel listening.

[0185] The second receiving module is used for the SL PRS resource configuration information sent by the base station device.

[0186] The specific methods for implementing the functions of the second sending module, second determining module, and second receiving module are as described in the method embodiments of the present application, and will not be elaborated here.

[0187] Figure 5 This is a schematic diagram of an anchor terminal device according to an embodiment of the present application. Using the method of any one of the embodiments of the present application, the sending device is used for: 5G mobile communication.

[0188] At least one module in the sidelink positioning measurement reporting anchor terminal device is used for at least one of the following functions: receiving the SL positioning measurement reporting channel resource sent by the base station device; receiving the SL PRS resource configuration information sent by the base station device or the target terminal device; sending the SL positioning measurement result to the base station.

[0189] To implement the above technical solution, a terminal device 800 proposed by the present application includes a third sending module 801, a third determining module 802, and a third receiving module 803.

[0190] The third sending module is used to send the SL positioning measurement result to the base station.

[0191] The third determining module is used to calculate the SL positioning measurement result according to the SL PRS sent by the target terminal.

[0192] The third receiving module is used to receive the SL positioning measurement reporting channel resource sent by the base station device; receive the SL PRS resource configuration information sent by the base station device or the target terminal device.

[0193] The specific methods for implementing the functions of the third sending module, third determining module, and third receiving module are as described in the method embodiments of the present application, and will not be elaborated here.

[0194] Figure 6 This is a schematic structural diagram of a network device according to another embodiment of the present invention. As shown in the figure, the network device 600 includes a processor 601, a wireless interface 602, and a memory 603. Among them, the wireless interface can be multiple components, that is, including a transmitter and a receiver, and provides a unit for communicating with various other devices on the transmission medium. The wireless interface realizes the communication function with the terminal device, processes wireless signals through the receiving and transmitting devices, and the data carried by its signals communicates with the memory or the processor via the internal bus structure. The memory 603 contains a computer program for executing any one of the embodiments of the present application, and the computer program runs or changes on the processor 601. When the memory, processor, and wireless interface circuit are connected through a bus system. The bus system includes a data bus, a power bus, a control bus, and a status signal bus, which will not be elaborated here.

[0195] Figure 7 It is a block diagram of a terminal device according to another embodiment of the present invention. The terminal device 700 includes at least one processor 701, a memory 702, a user interface 703, and at least one network interface 704. Each component in the terminal device 700 is coupled together through a bus system. The bus system is used to realize the connection and communication between these components. The bus system includes a data bus, a power bus, a control bus, and a status signal bus.

[0196] The user interface 703 may include a display, a keyboard, or a pointing device, such as a mouse, a trackball, a touchpad, or a touch screen, etc.

[0197] The memory 702 stores executable modules or data structures. The operating system and application programs can be stored in the memory. Among them, the operating system contains various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application programs contain various application programs, such as a media player, a browser, etc., for implementing various application services.

[0198] In the embodiment of the present invention, the memory 702 contains a computer program for executing any one of the embodiments of the present application, and the computer program runs or changes on the processor 701.

[0199] The memory 702 contains a computer-readable storage medium. The processor 701 reads the information in the memory 702 and combines its hardware to complete the steps of the above method. Specifically, a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 701, it realizes the steps of the method embodiment as described in any one of the above embodiments.

[0200] The processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the method of the present application can be completed by the integrated logic circuit in the hardware of the processor 701 or instructions in software form. The processor 701 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in combination with the embodiments of the present invention can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.

[0201] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. In a typical configuration, the device of the present application includes one or more processors (one of CPU, FGAP, MUC), an input / output user interface, a network interface, and a memory.

[0202] In addition, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memory, CD-ROM, optical memory, etc.) that contain computer-usable program code.

[0203] Therefore, the present application also provides a computer-readable medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the steps of the method described in any one of the embodiments of the present application. For example, the memories 603 and 702 of the present invention may include non-permanent memories in the computer-readable medium, in the form of random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM.

[0204] Based on Figures 4 to 7 the embodiments, the present application also provides a mobile communication system, which includes at least one embodiment of any terminal device in the present application and / or at least one embodiment of any network device in the present application.

[0205] It should also be noted that the term "including", "comprising", or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, commodity, or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to such a process, method, commodity, or device. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, commodity, or device including the said element.

[0206] It should also be noted that the "first" and "second" in the present application are used to distinguish multiple objects with the same name. Without specific description, there is no other special meaning.

[0207] The above are only the embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A sidelink positioning measurement reporting method, characterized in that, It includes the following steps: The SL PRS resource configuration information is the configuration information of the SLPRS resource location for terminal positioning measurement implemented based on the positioning reference signal configured on the sidelink; the SL positioning measurement reporting channel resource is the PUCCH resource or PUSCH resource used for reporting the SL positioning measurement result. The SL PRS is the positioning reference signal for SL terminal positioning measurement; the SL positioning measurement result is the positioning measurement result based on the SL PRS; the SL PRS is sent from the target terminal to the anchor terminal; the SL positioning measurement result is sent from the anchor terminal to the base station. The SL positioning measurement reporting channel resource is configured by the base station for the anchor terminal; when allocating the SL PRS resource for the target terminal or learning the anchor terminal reported by the target terminal, directly allocate the SL positioning measurement reporting channel resource to the anchor terminal associated with the target terminal to avoid the uplink data transmission resource request.

2. The sidelink positioning measurement reporting method according to claim 1, wherein, The target terminal obtains the SL PRS resource configuration information through base station configuration or through channel autonomous selection, and the anchor terminal obtains the SL PRS resource configuration information through the base station or the target terminal.

3. The sidelink positioning measurement reporting method according to claim 1, wherein It further includes: the target terminal reports to the base station the anchor terminal that sends the SL positioning measurement result.

4. The sidelink positioning measurement reporting method according to claim 1, wherein It further includes: the target terminal reports to the base station the anchor terminal associated with the target terminal.

5. The sidelink positioning measurement reporting method according to claim 1, wherein It further includes: the target terminal indicates to the anchor terminal whether to report the SL positioning measurement result.

6. The sidelink positioning measurement reporting method according to claim 1, wherein The SL PRS resource includes at least one of the following: periodic SL PRS resource, semi-persistent SL PRS resource, and aperiodic SL PRS resource.

7. The sidelink positioning measurement reporting method according to claim 6, wherein If the SLPRS resource configured by the base station for the target terminal is a periodic SL PRS resource or a semi-persistent SL PRS resource, the base station also needs to configure the corresponding periodic SL PRS resource activation method or semi-persistent SL PRS resource activation method to align the SL PRS sent by the target terminal and the SLPRS received by the anchor terminal in time.

8. The sidelink positioning measurement reporting method according to claim 7, wherein The SL positioning measurement reporting channel resource includes at least one of the following: periodic SL positioning measurement reporting channel resource, semi-persistent SL positioning measurement reporting channel resource, and aperiodic SL positioning measurement reporting channel resource.

9. The sidelink positioning measurement reporting method according to claim 7, wherein The activation method of the periodic SL PRS resource on the target terminal side includes: If the anchor terminal obtains the periodic SL PRS resource configuration information through the base station, the base station designates the sending time of the SL PRS. If the anchor terminal obtains the periodic SL PRS resource configuration information through the target terminal, the SL PRS is sent after the target terminal sends the periodic SLPRS resource configuration information. If the base station sends multiple sets of periodic SL PRS resource configuration information through the system information, the target terminal and the anchor terminal directly take effect after receiving the system information.

10. The sidelink positioning measurement reporting method according to claim 7, wherein, The activation method of the semi-persistent SL PRS resource on the target terminal side includes: If the anchor terminal obtains the semi-persistent SL PRS resource configuration information through the base station, the base station designates the sending time of the SL PRS in the activation signaling of the semi-persistent SL PRS resource configuration information. If the anchor terminal obtains the semi-persistent SL PRS resource configuration information through the target terminal, the SL PRS is sent after the target terminal sends the signaling for activating the semi-persistent SL PRS resource configuration information. After the base station activates the semi-persistent SL PRS resources corresponding to the target terminal through DCI signaling, the SL PRS is sent on the semi-persistent SL PRS resources.

11. The sidelink positioning measurement reporting method according to claim 8, wherein Configure a time slot association relationship for the periodic SL positioning measurement reporting channel resources or semi-persistent SL positioning measurement reporting channel resources, and the resources corresponding to the SL PRS.

12. The sidelink positioning measurement reporting method according to claim 9, wherein, If the target terminal indicates the periodic SL PRS resource configuration information in a multicast manner and activates the HARQ feedback corresponding to the PSSCH carrying the periodic SL PRS resource configuration information, the target terminal sends the SL PRS on the periodic SL PRS resources after receiving the corresponding HARQ ACK feedback or no NACK feedback.

13. The sidelink positioning measurement reporting method according to claim 10, wherein If the target terminal indicates the activation of the semi-persistent SL PRS resource configuration information in a multicast manner and activates the HARQ feedback corresponding to the PSSCH of the activation signaling carrying the semi-persistent SL PRS resource configuration information, the target terminal sends the SL PRS on the semi-persistent SL PRS resources after receiving the corresponding HARQ ACK feedback or no NACK feedback.

14. The sidelink positioning measurement reporting method according to any one of claims 1 to 13, for a base station, characterized in that, Include the following steps: Send the SL positioning measurement reporting channel resources. Receive the SL positioning measurement results.

15. The sidelink positioning measurement reporting method according to claim 14, wherein, Also include: Send the SL PRS resource configuration information.

16. The sidelink positioning measurement reporting method according to any one of claims 1 to 13, for a target terminal, characterized in that, Include the following steps: Receive the SL PRS resource configuration information sent by the base station, or obtain the SL PRS resource configuration information through channel listening and autonomous selection. Send the SL PRS.

17. The sidelink positioning measurement reporting method according to any one of claims 1 to 13, which is used for an anchor terminal, is characterized in that, Include the following steps: Receive the SL positioning measurement reporting channel resources sent by the base station. Receive the SL PRS resource configuration information sent by the base station or the target terminal. Send the SL positioning measurement results to the base station.

18. A sidelink positioning measurement reporting base station device for implementing the method according to any one of claims 1 to 15, characterized in that At least one module in the sidelink positioning measurement reporting base station device is used for at least one of the following functions: determining and sending the SL positioning measurement reporting channel resources; receiving the SL positioning measurement results; sending the SL PRS resource configuration information.

19. A sidelink positioning measurement reporting target terminal device for implementing the method according to any one of claims 1 to 13, 16, characterized in that At least one module in the sidelink positioning measurement reporting target terminal device is used for at least one of the following functions: receiving the SL PRS resource configuration information sent by the base station device, or obtaining the SL PRS resource configuration information through channel listening and autonomous selection; sending the SL PRS.

20. A sidelink positioning measurement reporting anchor terminal device for implementing the method according to any one of claims 1 to 13, 17, characterized in that At least one module in the sidelink positioning measurement reporting anchor terminal device is used for at least one of the following functions: receiving the SL positioning measurement reporting channel resource sent by the base station device; receiving the SL PRS resource configuration information sent by the base station device or the target terminal device; sending the SL positioning measurement result to the base station.

21. A communication device, characterized in that, Comprising: A memory, a processor, and a computer program stored on the memory and executable on the processor, wherein when the computer program is executed by the processor, the steps of the method according to any one of claims 1 to 17 are implemented.

22. A computer-readable medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 17 are implemented.

23. A mobile communication system, comprising the sidelink positioning measurement reporting base station device according to claim 18, the sidelink positioning measurement reporting target terminal device according to claim 19, and the sidelink positioning measurement reporting anchor device according to claim 20.

Images