Sidelink positioning method and communication apparatus

Abstract

Provided in the embodiments of the present application are a sidelink positioning method and a communication apparatus. The method comprises: a first communication device sending first information, wherein the first information is used for instructing a second communication device to perform sidelink positioning measurement on the basis of a reference signal, the first information comprises a minimum measurement bandwidth requirement, and the minimum measurement bandwidth requirement is used for indicating the minimum value of a bandwidth of the reference signal; and the first communication device receiving a measurement report, wherein the measurement report is obtained by means of performing sidelink positioning measurement on the basis of the reference signal, the measurement report comprises bandwidth information corresponding to the reference signal, the bandwidth information is an actual bandwidth of the reference signal, and the actual bandwidth of the reference signal is greater than or equal to the minimum measurement bandwidth requirement. Therefore, by means of indicating the minimum measurement bandwidth of sidelink positioning measurement when positioning measurement is performed, the minimum measurement precision is further defined, thereby improving the positioning measurement precision.

Description

Sidelink positioning method and communication device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on July 27, 2023, with application number 202310940233.9 and invention name “A side link positioning method and communication device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the field of wireless communication technology, and more specifically, to a sidelink positioning method and communication device. Background Art

[0003] Positioning is an important function in mobile communication systems, requiring the system to provide users' location information in real time. For sidelink scenarios, the current method mainly introduces the sidelink positioning reference signal (SL-PRS). The transmitting device sends the SL-PRS signal, and the receiving device performs positioning measurements based on the received SL-PRS signal. However, since sending SL-PRS requires additional time and frequency resources, it is impossible to maximize resource utilization. To this end, it is proposed to embed SL-PRS into the time slot of the physical sidelink shared channel (PSSCH) (where SL-PRS has the same bandwidth and transmission power as PSSCH) and send it together for positioning measurement. In other words, the existing signals of the sidelink can be used, and positioning measurements can be performed without sending SL-PRS, thereby reducing resource overhead. When using the existing signals of the sidelink for positioning measurements, how to ensure positioning accuracy is a hot topic of research.

[0004] Summary of the Invention

[0005] The present application provides a sidelink positioning method, which improves the positioning accuracy and reliability by indicating the bandwidth requirement of the sidelink positioning measurement.

[0006] In a first aspect, a sidelink positioning method is provided. The method may be performed by a first communication device, or by a component (e.g., a chip or circuit) of the first communication device, without limitation. For ease of description, the method is described below using the first communication device as an example.

[0007] The method may include: a first communication device sends first information, the first information is used to instruct a second communication device to perform sidelink positioning measurement based on a reference signal, the first information includes a minimum measurement bandwidth requirement, and the minimum measurement bandwidth requirement is used to indicate the minimum value of the bandwidth of the reference signal; the first communication device receives a measurement report, the measurement report is obtained by performing sidelink positioning measurement based on the reference signal, the measurement report includes bandwidth information corresponding to the reference signal, the bandwidth information is the actual bandwidth of the reference signal, and the actual bandwidth of the reference signal is greater than or equal to the minimum measurement bandwidth requirement.

[0008] In the above solution, the first communications device further limits the minimum measurement accuracy by instructing the second communications device on the minimum measurement bandwidth for sidelink positioning measurements during sidelink positioning measurements (the bandwidth is positively correlated with positioning measurement accuracy), thereby improving positioning measurement accuracy. Furthermore, indicating the minimum measurement bandwidth can reduce invalid positioning measurements and lower power consumption.

[0009] At the same time, the first communications device can determine the bandwidth corresponding to the current positioning measurement based on the bandwidth information corresponding to the reported measurement signal, thereby determining the accuracy range corresponding to the positioning measurement amount. When bandwidth information corresponding to multiple measurement signals is reported, the first communications device can select the positioning measurement amount with the larger positioning measurement bandwidth for positioning, further improving positioning measurement accuracy.

[0010] In a possible implementation manner, the first communication device is a device to be located, an anchor device, or a location management function (LMF).

[0011] In the above scheme, when the relative or absolute positioning is initiated between user devices, the first communication device that initiates positioning measurement and performs positioning can be the device to be positioned or the anchor device; when the device to be positioned (or the target device) is within the network coverage, the first communication device that initiates positioning measurement and performs positioning can be the LMF.

[0012] In one possible implementation, the reference signal includes at least one of the following: a physical layer sidelink shared channel demodulation reference signal PSSCH DMRS, a physical layer sidelink control channel demodulation reference signal PSCCH DMRS, a physical layer sidelink broadcast channel demodulation reference signal PSBCH DMRS, a sidelink channel state information reference signal SL CSI-RS, and a sidelink phase tracking reference signal SL PT-RS.

[0013] In the above scheme, by using reference signals other than SL-PRS, such as data demodulation reference signals (for example, PSSCH DMRS, PSCCH DMRS, PSBCH DMRS, etc.) or channel detection reference signals (for example, SL CSI-RS, SL PT-RS) for side link positioning measurement, compared with using SL-PRS for side link positioning measurement, it avoids occupying additional time and frequency resources and can effectively improve resource utilization.

[0014] In a possible implementation manner, the method further includes: the first communication device sending a measurement time window, where the measurement time window is used to indicate a time for sidelink positioning measurement.

[0015] In the above solution, the first communication device can avoid invalid measurements caused by performing additional (or unrequired) positioning measurements at other times by indicating the time to perform sidelink positioning measurements, thereby reducing power consumption.

[0016] In one possible implementation, the measurement report also includes at least one of the following: the antenna port number corresponding to the reference signal, the measurement time, and the location of the time-frequency resources corresponding to the reference signal, and the measurement time is used to indicate the time when the second communication device performs side link positioning measurement.

[0017] In the above scheme, when the first communication device sends multiple reference signals through multiple antenna ports, when the measurement report received by the first communication device includes the antenna port number corresponding to the reference signal for positioning measurement, the first communication device can determine the corresponding reference signal for positioning measurement based on the antenna port number, thereby determining the position of the device to be positioned. When the measurement report received by the first communication device includes the measurement time, the first communication device can determine the time for performing sidelink positioning measurement based on the reference signal according to the measurement time, and then determine the position of the device to be positioned according to the measurement time. When the measurement report received by the first communication device includes the position of the time-frequency resource corresponding to the reference signal, the first communication device can determine the position of the device to be positioned according to the position of the time-frequency resource corresponding to the reference signal.

[0018] In one possible implementation, when the first communication device is a device to be located, the method further includes: the first communication device obtains a sidelink resource, and the bandwidth corresponding to the sidelink resource is greater than or equal to the minimum measurement bandwidth requirement; the first communication device sends a reference signal on the sidelink resource.

[0019] In the above scheme, when in the scenario of relative or absolute positioning initiated between user devices, the first communication device that initiates positioning measurement and performs positioning is the device to be positioned or the anchor device, the first communication device also needs to obtain a side link resource that meets the minimum measurement bandwidth requirement and send a reference signal on the side link resource so that the second device can successfully perform positioning measurement.

[0020] In a possible implementation manner, the first communications device determines the location information of the device to be located according to the measurement report.

[0021] In the above solution, the first communication device determines the position of the device to be located according to the measurement report obtained based on the reference signal that meets the minimum measurement bandwidth requirement, which can improve the positioning accuracy.

[0022] In a second aspect, a sidelink positioning method is provided. This method can be performed by a second communication device, or by a component (e.g., a chip or circuit) of the second communication device, without limitation. For ease of description, the following description uses the second communication device as an example.

[0023] The method may include: the second communication device receives first information, the first information is used to instruct the second communication device to perform sidelink positioning measurement based on a reference signal, the first information includes a minimum measurement bandwidth requirement, and the minimum measurement bandwidth requirement is used to indicate the minimum value of the bandwidth of the reference signal; when the second communication device determines that the bandwidth of the reference signal is greater than or equal to the minimum measurement bandwidth requirement, the second communication device performs sidelink positioning measurement based on the reference signal; the second communication device sends a measurement report, the measurement report is obtained by performing sidelink positioning measurement based on the reference signal, the measurement report includes bandwidth information corresponding to the reference signal, and the bandwidth information is the actual bandwidth of the reference signal.

[0024] In the above solution, the first communications device indicates the minimum measurement bandwidth for sidelink positioning measurements, allowing the second communications device to perform positioning measurements only when the reference signal bandwidth is greater than or equal to the minimum measurement bandwidth requirement. This further limits the minimum measurement accuracy (bandwidth is positively correlated with positioning measurement accuracy), thereby improving positioning measurement accuracy. Furthermore, indicating the minimum measurement bandwidth can reduce ineffective positioning measurements and lower power consumption.

[0025] At the same time, the second communication device reports the bandwidth information corresponding to the measurement signal when reporting the measurement report, so that the first communication device can obtain the bandwidth corresponding to the current positioning measurement based on the bandwidth information corresponding to the reported measurement signal, thereby determining the accuracy range corresponding to the positioning measurement amount. When the second communication device reports the bandwidth information corresponding to multiple measurement signals, the first communication device can select the positioning measurement amount with a larger positioning measurement bandwidth for positioning, further improving the positioning measurement accuracy. In addition, the first communication device can avoid occupying additional time-frequency resources by instructing the second communication device to use reference signals other than SL-PRS for sidelink positioning measurement.

[0026] In a possible implementation manner, the second communication device is a device to be located or an anchor device.

[0027] In one possible implementation, the reference signal includes at least one of the following: a physical layer sidelink shared channel demodulation reference signal PSSCH DMRS, a physical layer sidelink control channel demodulation reference signal PSCCH DMRS, a physical layer sidelink broadcast channel demodulation reference signal PSBCH DMRS, a sidelink channel state information reference signal SL CSI-RS, and a sidelink phase tracking reference signal SL PT-RS.

[0028] In the above scheme, by using data demodulation reference signals (for example, PSSCH DMRS, PSCCH DMRS, PSBCH DMRS, etc.) or channel sounding reference signals (for example, SL CSI-RS, SL PT-RS) for side link positioning measurements, compared with using SL-PRS for side link positioning measurements, it avoids occupying additional time-frequency resources and can effectively improve resource utilization.

[0029] In a possible implementation manner, the method further includes: the second communication device receiving a measurement time window, where the measurement time window is used to indicate a time for sidelink positioning measurement.

[0030] In the above solution, the second communication device performs sidelink positioning measurements within the time indicated by the first communication device, thereby avoiding invalid measurements caused by performing additional (or unrequired) positioning measurements at other times and reducing power consumption.

[0031] In one possible implementation, the measurement report also includes at least one of the following: the antenna port number corresponding to the reference signal, the measurement time, and the location of the time-frequency resources corresponding to the reference signal, and the measurement time is used to indicate the time when the second communication device performs side link positioning measurement.

[0032] In the above scheme, when the second communication device receives multiple reference signals sent from the first communication device through multiple antenna ports, the second communication device reports the antenna port number corresponding to the reference signal for positioning measurement in the measurement report, so that the first communication device can determine the position of the device to be located based on the reference signal corresponding to the antenna port number. When the measurement report reported by the second communication device includes the measurement time, the first communication device can determine the time for performing sidelink positioning measurement based on the reference signal according to the measurement time, and then determine the position of the device to be located according to the measurement time. When the measurement report reported by the second communication device includes the position of the time-frequency resources corresponding to the reference signal, the first communication device can determine the position of the device to be located based on the position of the time-frequency resources corresponding to the reference signal.

[0033] In one possible implementation, the second communication device receives the first information, including: the second communication device receives the first information from the device to be located; the method also includes: the second communication device receives a reference signal from the device to be located on a sidelink resource, and the bandwidth corresponding to the sidelink resource is greater than or equal to the minimum measurement bandwidth requirement.

[0034] In the above scheme, when in the scenario of relative or absolute positioning initiated between user devices, the first communication device that initiates positioning measurement and performs positioning is the device to be positioned, the second communication device receives the reference signal sent from the first communication device on the side link resource that meets the minimum measurement bandwidth requirement, so that the second device can successfully perform positioning measurement.

[0035] In a possible implementation manner, the second communication device sending the measurement report includes: the second communication device sending the measurement report to the device to be located.

[0036] In a possible implementation manner, the second communication device receives the first information, which includes: the second communication device receives the first information from a location management function network element LMF; and the second communication device sends the first information to the device to be located.

[0037] In the above scheme, when the device to be located is within the coverage of the network, and the first communication device that initiates positioning measurement and performs positioning is LMF, the second communication device receives the first information from the LMF and forwards the first information to the device to be located, so that the device to be located sends a reference signal for side link positioning measurement according to the first information.

[0038] In one possible implementation, the method also includes: the second communication device receives a reference signal from the device to be located on a side link resource, and the bandwidth corresponding to the side link resource is greater than or equal to the minimum measurement bandwidth requirement; wherein, the second communication device sends a measurement report, including: the second communication device sends a measurement report to the LMF.

[0039] In the above scheme, when the device to be located (or the target device) is within the network coverage, and the first communication device that initiates the positioning measurement and performs positioning is the LMF, the second communication device receives the reference signal sent by the first communication device on the sidelink resource that meets the minimum measurement bandwidth requirement, so that the second device can successfully perform the positioning measurement. At the same time, the measurement report is reported to the LMF, so that the LMF determines the location of the device to be located based on the measurement report.

[0040] In a third aspect, a sidelink positioning method is provided. This method can be performed by the device to be positioned, or by a component of the device to be positioned (e.g., a chip or circuit), without limitation. For ease of description, the following description uses the method performed by the device to be positioned as an example.

[0041] The method may include: the device to be positioned receives first information from a second communication device, the first information is used to instruct the second communication device to perform sidelink positioning measurement based on a reference signal, the first information includes a minimum measurement bandwidth requirement, and the minimum measurement bandwidth requirement is used to indicate the minimum value of the bandwidth of the reference signal; the device to be positioned obtains a sidelink resource, and the bandwidth corresponding to the sidelink resource is greater than or equal to the minimum measurement bandwidth requirement; the device to be positioned sends a reference signal to the second communication device on the sidelink resource.

[0042] In the above scheme, when the device to be located is within the coverage of the network and the first communication device that initiates positioning measurement and performs positioning is LMF, the device to be located obtains a side link resource that meets the minimum measurement bandwidth requirement based on the first information sent by the second communication device, and sends a reference signal on the resource for positioning measurement. This further limits the minimum measurement accuracy (the bandwidth is positively correlated with the positioning measurement accuracy), thereby improving the positioning measurement accuracy.

[0043] In a fourth aspect, a sidelink positioning method is provided. This method can be performed by a first communication device, or by a component of the first communication device (e.g., a chip or circuit), without limitation. For ease of description, the following description uses the first communication device as an example.

[0044] The method may include: a first communication device sends second information, the second information is used to instruct the second communication device to perform sidelink positioning measurement based on a first channel, the first channel is a symbol channel used to carry data signals, the second information includes a minimum measurement bandwidth requirement, the minimum measurement bandwidth requirement is used to indicate the minimum value of the bandwidth of the first channel; the first communication device receives a measurement report, the measurement includes a result for indicating the sidelink positioning measurement, the measurement report includes a positioning measurement amount and bandwidth information corresponding to the first channel; the first communication device determines the location information of the device to be located based on the measurement report.

[0045] In the above solution, during a sidelink positioning measurement, the first communications device instructs the second communications device on the minimum measurement bandwidth for sidelink positioning measurements based on the first channel. This indicates that when the data signal received by the second communications device via the first channel meets the minimum measurement bandwidth, the second communications device is to perform a sidelink positioning measurement based on the data signal. This further limits the minimum measurement accuracy (bandwidth is positively correlated with positioning measurement accuracy), thereby improving positioning measurement accuracy. Furthermore, indicating the minimum measurement bandwidth can reduce invalid positioning measurements and lower power consumption.

[0046] At the same time, the first communication device performs sidelink positioning measurement by instructing the use of a symbol channel carrying a data signal (rather than a sidelink positioning measurement reference signal). In this way, more time domain channels are used for positioning measurement, which can improve the accuracy of positioning measurement and reduce positioning estimation errors caused by non-ideal factors (for example, by measuring through channel estimation of multiple symbols, the Doppler frequency deviation caused by device movement can be estimated, thereby improving positioning measurement accuracy). In addition, the first communication device can obtain the bandwidth corresponding to the current positioning measurement based on the bandwidth information corresponding to the reported measurement signal, thereby determining the accuracy range corresponding to the positioning measurement amount. When the bandwidth information corresponding to multiple measurement signals is reported, the first communication device can select a positioning measurement amount with a larger positioning measurement bandwidth for positioning, thereby further improving positioning accuracy.

[0047] In a possible implementation manner, the first communication device is a device to be located, an anchor device, or a positioning management function network element LMF.

[0048] In the above scheme, when the relative or absolute positioning is initiated between user devices, the first communication device that initiates positioning measurement and performs positioning can be the device to be positioned or the anchor device; when the device to be positioned (or the target device) is within the network coverage, the first communication device that initiates positioning measurement and performs positioning can be the LMF.

[0049] In a possible implementation manner, the method further includes: the first communication device sending a measurement time window, where the measurement time window is used to indicate a time for sidelink positioning measurement.

[0050] In the above solution, the first communications device can avoid wasting resources due to performing additional (or unneeded) positioning measurements at other times by indicating the time to perform sidelink positioning measurements.

[0051] In one possible implementation, the measurement report also includes at least one of the following: the antenna port number corresponding to the first channel, the measurement time, the third indication information, and the fourth indication information; wherein the measurement time is used to indicate the time when the second communication device performs the side link positioning measurement, the third indication information is used to indicate whether the side link positioning measurement is performed based on the first channel, and the fourth indication information is used to indicate whether the decoding data inverse encoding and the modulation process are used to enhance the channel estimation of the data signal when performing the side link positioning measurement based on the first channel.

[0052] In the above scheme, when the first communication device sends multiple data signals through multiple antenna ports, when the measurement report received by the first communication device includes the antenna port number corresponding to the data signal for positioning measurement, the first communication device can determine the corresponding data signal for positioning measurement based on the antenna port number, thereby determining the position of the device to be positioned. When the measurement report received by the first communication device includes the measurement time, the first communication device can determine the time for performing sidelink positioning measurement based on the first channel according to the measurement time, and then determine the position of the device to be positioned according to the measurement time. When the measurement report received by the first communication device includes the third indication information and the fourth indication information, the positioning accuracy is further improved by instructing the second communication device whether to use the symbol channel carrying the data signal for positioning measurement, and whether to use the decoded data inverse encoding and modulation to enhance the positioning measurement.

[0053] In one possible implementation, when the first communication device is a device to be located, the method further includes: the first communication device obtains a side link resource, and the bandwidth corresponding to the side link resource is greater than or equal to the minimum measurement bandwidth requirement; the first communication device sends a data signal on the first channel based on the side link resource.

[0054] In the above scheme, when in the scenario of relative or absolute positioning initiated between user devices, the first communication device that initiates positioning measurement and performs positioning is the device to be positioned (or the target device), the first communication device also needs to obtain side link resources that meet the minimum measurement bandwidth requirements, and based on the side link resources, send data signals on the first channel so that the second device can successfully perform positioning measurements.

[0055] In a fifth aspect, a sidelink positioning method is provided. This method can be performed by a first communication device, or by a component of the first communication device (e.g., a chip or circuit), without limitation. For ease of description, the method is described below using the first communication device as an example.

[0056] The method may include: a second communication device receives second information, the second information is used to instruct the second communication device to perform sidelink positioning measurement based on a first channel, the first channel is a symbol channel used to carry data signals, the second information includes a minimum measurement bandwidth requirement, the minimum measurement bandwidth requirement is used to indicate the minimum value of the bandwidth of the first channel; when the second communication device determines that the bandwidth of the first channel is greater than or equal to the minimum measurement bandwidth requirement, the second communication device performs sidelink positioning measurement based on the first channel; the second communication device sends a measurement report, the measurement includes a result for indicating the sidelink positioning measurement, and the measurement report includes a positioning measurement amount and bandwidth information corresponding to the first channel.

[0057] In the above solution, the first communications device indicates the minimum measurement bandwidth for sidelink positioning measurements, allowing the second communications device to perform positioning measurements only when the bandwidth of the data signal transmitted on the first channel is greater than or equal to the minimum measurement bandwidth requirement. This further limits the minimum measurement accuracy (bandwidth is positively correlated with positioning measurement accuracy), thereby improving positioning measurement accuracy. Furthermore, indicating the minimum measurement bandwidth can reduce ineffective positioning measurements and lower power consumption.

[0058] At the same time, the first communication device performs sidelink positioning measurement by instructing the use of a symbol channel carrying a data signal (rather than a sidelink positioning measurement reference signal). In this way, more time domain channels are used for positioning measurement, which can improve the accuracy of positioning measurement and reduce positioning estimation errors caused by non-ideal factors (for example, by measuring through channel estimation of multiple symbols, the Doppler frequency deviation caused by device movement can be estimated, thereby improving positioning measurement accuracy). In addition, the first communication device can obtain the bandwidth corresponding to the current positioning measurement based on the bandwidth information corresponding to the reported measurement signal, thereby determining the accuracy range corresponding to the positioning measurement amount. When the bandwidth information corresponding to multiple measurement signals is reported, the first communication device can select a positioning measurement amount with a larger positioning measurement bandwidth for positioning, thereby further improving positioning accuracy.

[0059] In a possible implementation manner, the method further includes: the second communication device receiving a measurement time window, where the measurement time window is used to indicate a time for sidelink positioning measurement.

[0060] In the above solution, the second communication device can avoid wasting resources caused by performing additional (or unrequired) positioning measurements at other times by performing sidelink positioning measurements within the time indicated by the first communication device.

[0061] In one possible implementation, the measurement report also includes at least one of the following: the antenna port number corresponding to the first channel, the measurement time, the third indication information, and the fourth indication information; wherein the measurement time is used to indicate the time when the second communication device performs the side link positioning measurement, the third indication information is used to indicate whether the side link positioning measurement is performed based on the first channel, and the fourth indication information is used to indicate whether the decoding data de-encoding and modulation process is used to enhance the channel estimation of the data signal when performing the side link positioning measurement based on the first channel.

[0062] In the above scheme, when the first communication device sends data signals through multiple first channels corresponding to multiple antenna ports, the measurement report reported by the second communication device includes the antenna port number corresponding to the first channel for positioning measurement, so that the first communication device can determine the position of the device to be positioned based on the first channel corresponding to the antenna port number. When the measurement report reported by the second communication device includes the measurement time, the first communication device can determine the time for performing sidelink positioning measurement based on the first channel according to the measurement time, and then determine the position of the device to be positioned according to the measurement time. When the measurement report reported by the second communication device includes the third indication information and the fourth indication information, the positioning accuracy is further improved by instructing the second communication device whether to use the symbol channel carrying the data signal for positioning measurement, and whether to use the decoded data inverse encoding and modulation to enhance the positioning measurement.

[0063] In one possible implementation, the second communication device receives the second information, including: the second communication device receives the second information from the device to be located; the method also includes: the second communication device receives the data signal from the device to be located on the first channel based on the sidelink resource, and the bandwidth corresponding to the sidelink resource is greater than or equal to the minimum measurement bandwidth requirement.

[0064] In the above scheme, when in the scenario of relative or absolute positioning initiated between user devices, the first communication device that initiates positioning measurement and performs positioning is the device to be positioned or the anchor device, the second communication device receives the data signal sent by the first communication device on the first channel based on the side link resource. When the received data signal meets the minimum measurement bandwidth, the second communication device performs positioning measurement based on the data signal, so that the bandwidth corresponding to the positioning measurement amount meets the minimum bandwidth requirement, thereby ensuring that the positioning accuracy meets the corresponding accuracy requirements.

[0065] In a possible implementation manner, the second communication device sending the measurement report includes: the second communication device sending the measurement report to the device to be located.

[0066] In a possible implementation manner, the second communication device receives the second information, including: the second communication device receives the second information from the location management function network element LMF; and the second communication device sends the second information to the device to be located.

[0067] In the above scheme, when the device to be located (or the target device) is within the coverage of the network, and the first communication device that initiates positioning measurement and performs positioning is LMF, the second communication device receives the second information from the LMF and forwards the second information to the device to be located, so that the device to be located sends a data signal for side link positioning measurement based on the first channel according to the second information.

[0068] In one possible implementation, the method further includes: the second communication device receives a data signal from the device to be located on a first channel based on a side link resource, and the bandwidth corresponding to the side link resource is greater than or equal to the minimum measurement bandwidth requirement; wherein, the second communication device sends a measurement report, including: the second communication device sends a measurement report to the LMF.

[0069] In the above scheme, when the device to be located is within the coverage of the network, and the first communication device that initiates the positioning measurement and performs positioning is the LMF, the second communication device receives the data signal sent by the first communication device on the first channel based on the sidelink resource. When the received data signal meets the minimum measurement bandwidth, the second communication device performs positioning measurement based on the data signal, so that the bandwidth corresponding to the positioning measurement amount meets the minimum bandwidth requirement, thereby ensuring that the positioning accuracy meets the corresponding accuracy requirement. At the same time, the measurement report is reported to the LMF, so that the LMF determines the position of the device to be located based on the measurement report.

[0070] In a sixth aspect, a sidelink positioning method is provided. This method can be performed by the device to be positioned, or by a component of the device to be positioned (e.g., a chip or circuit), without limitation. For ease of description, the following description uses the method performed by the device to be positioned as an example.

[0071] The method may include: the device to be located receives second information from a second communication device, the second information is used to instruct the second communication device to perform sidelink positioning measurement based on a first channel, the second communication device is a device with known position information, the first channel is a symbol channel used to carry data signals, the second information includes a minimum measurement bandwidth requirement, and the minimum measurement bandwidth requirement is used to indicate the minimum value of the bandwidth of the first channel; the device to be located obtains a sidelink resource, and the bandwidth corresponding to the sidelink resource is greater than or equal to the minimum measurement bandwidth requirement; the device to be located sends a data signal to the second communication device on the first channel based on the sidelink resource.

[0072] In the above scheme, when the device to be located is within the coverage of the network and the first communication device that initiates positioning measurement and performs positioning is LMF, the device to be located obtains a side link resource that meets the minimum measurement bandwidth requirement according to the second information sent by the second communication device (, and based on the resource, sends a data signal on the first channel for positioning measurement, which further limits the minimum measurement accuracy (the bandwidth is positively correlated with the positioning measurement accuracy), thereby improving the positioning measurement accuracy.

[0073] In the seventh aspect, a communication device is provided, comprising a unit for executing the method shown in the first aspect above. The communication device may be a first communication device, or may be executed by a chip or circuit arranged in the first communication device. This application does not limit this.

[0074] The communication device comprises:

[0075] The transceiver unit is configured to send first information, the first information being used to instruct the second communications device to perform sidelink positioning measurements based on the reference signal, the first information including a minimum measurement bandwidth requirement, which indicates a minimum value of the reference signal bandwidth. The transceiver unit is further configured to receive a measurement report, the measurement report being obtained by performing sidelink positioning measurements based on the reference signal, the measurement report including bandwidth information corresponding to the reference signal, the bandwidth information being an actual bandwidth of the reference signal, and the actual bandwidth of the reference signal being greater than or equal to the minimum measurement bandwidth requirement.

[0076] In a possible implementation manner, the communication device is a device to be located or a location management function (LMF).

[0077] In one possible implementation, the reference signal includes at least one of the following: a physical layer sidelink shared channel demodulation reference signal PSSCH DMRS, a physical layer sidelink control channel demodulation reference signal PSCCH DMRS, a physical layer sidelink broadcast channel demodulation reference signal PSBCH DMRS, a sidelink channel state information reference signal SL CSI-RS, and a sidelink phase tracking reference signal SL PT-RS.

[0078] In a possible implementation manner, the transceiver unit is further configured to send a measurement time window, where the measurement time window is used to indicate a time for sidelink positioning measurement.

[0079] In one possible implementation, the measurement report also includes at least one of the following: the antenna port number corresponding to the reference signal, the measurement time, and the location of the time-frequency resources corresponding to the reference signal, and the measurement time is used to indicate the time when the second communication device performs side link positioning measurement.

[0080] In one possible implementation, when the communication device is a device to be positioned, the processing unit is further used to obtain side link resources, and the bandwidth corresponding to the side link resources is greater than or equal to the minimum measurement bandwidth requirement; the transceiver unit is further used to send a reference signal on the side link resources.

[0081] In a possible implementation manner, the processing unit is configured to determine location information of the device to be located according to the measurement report.

[0082] The explanation and beneficial effects of the communication device-related contents provided in the seventh aspect can refer to the method shown in the first aspect and will not be repeated here.

[0083] In the eighth aspect, a communication device is provided, comprising a unit for executing the method shown in the second aspect above. The communication device may be a second communication device, or may be executed by a chip or circuit arranged in the second communication device. This application does not limit this.

[0084] The communication device comprises:

[0085] The transceiver unit is used to receive first information, where the first information is used to instruct the communication device to perform sidelink positioning measurement based on the reference signal, and the first information includes a minimum measurement bandwidth requirement, where the minimum measurement bandwidth requirement is used to indicate the minimum value of the bandwidth of the reference signal; when the communication device determines that the bandwidth of the reference signal is greater than or equal to the minimum measurement bandwidth requirement, the processing unit is used to perform sidelink positioning measurement based on the reference signal; the transceiver unit is also used to send a measurement report, where the measurement report is obtained by performing sidelink positioning measurement based on the reference signal, and the measurement report includes bandwidth information corresponding to the reference signal, where the bandwidth information is the actual bandwidth of the reference signal.

[0086] In one possible implementation, the reference signal includes at least one of the following: a physical layer sidelink shared channel demodulation reference signal PSSCH DMRS, a physical layer sidelink control channel demodulation reference signal PSCCH DMRS, a physical layer sidelink broadcast channel demodulation reference signal PSBCH DMRS, a sidelink channel state information reference signal SL CSI-RS, and a sidelink phase tracking reference signal SL PT-RS.

[0087] In a possible implementation manner, the transceiver unit is further configured to receive a measurement time window, where the measurement time window is used to indicate a time for sidelink positioning measurement.

[0088] In one possible implementation, the measurement report also includes at least one of the following: the antenna port number corresponding to the reference signal, the measurement time, and the location of the time-frequency resources corresponding to the reference signal, and the measurement time is used to indicate the time when the second communication device performs side link positioning measurement.

[0089] In one possible implementation, the transceiver unit is further used to receive first information from the device to be located; the transceiver unit is further used to receive a reference signal from the device to be located on a sidelink resource, and the bandwidth corresponding to the sidelink resource is greater than or equal to the minimum measurement bandwidth requirement.

[0090] In a possible implementation manner, the transceiver unit is further configured to send a measurement report to the device to be located.

[0091] In a possible implementation manner, the transceiver unit is further configured to receive first information from a location management function network element LMF; and the second communication device sends the first information to the device to be located.

[0092] In one possible implementation, the transceiver unit is further used to receive a reference signal from the device to be located on a sidelink resource, where the bandwidth corresponding to the sidelink resource is greater than or equal to the minimum measurement bandwidth requirement; and send a measurement report to the LMF.

[0093] The explanation and beneficial effects of the communication device-related contents provided in the eighth aspect can refer to the method shown in the second aspect and will not be repeated here.

[0094] In the ninth aspect, a communication device is provided, comprising a unit for executing the method shown in the third aspect above. The communication device may be a device to be located, or may be executed by a chip or circuit provided in the device to be located. This application does not limit this.

[0095] The communication device comprises:

[0096] A transceiver unit is used to receive first information from a second communication device, where the first information is used to instruct the second communication device to perform sidelink positioning measurement based on a reference signal. The first information includes a minimum measurement bandwidth requirement, which is used to indicate the minimum value of the bandwidth of the reference signal; a processing unit is used to obtain a sidelink resource, where the bandwidth corresponding to the sidelink resource is greater than or equal to the minimum measurement bandwidth requirement; and the transceiver unit is further used to send a reference signal to the second communication device on the sidelink resource.

[0097] The explanation and beneficial effects of the communication device-related contents provided in the ninth aspect can be referred to the method shown in the third aspect and will not be repeated here.

[0098] In the tenth aspect, a communication device is provided, comprising a unit for executing the method shown in the fourth aspect above. The communication device may be a first communication device, or may be executed by a chip or circuit arranged in the first communication device. This application does not limit this.

[0099] The communication device comprises:

[0100] The transceiver unit is used to send second information, where the second information is used to instruct the second communication device to perform sidelink positioning measurement based on the first channel, where the first channel is a symbol channel used to carry data signals, and the second information includes a minimum measurement bandwidth requirement, which is used to indicate the minimum value of the bandwidth of the first channel; the transceiver unit is also used to receive a measurement report, where the measurement includes a result indicating the sidelink positioning measurement, and the measurement report includes a positioning measurement amount and bandwidth information corresponding to the first channel; the processing unit is used to determine the location information of the device to be positioned based on the measurement report.

[0101] In a possible implementation manner, the communication device is a device to be located or a location management function network element LMF.

[0102] In a possible implementation manner, the transceiver unit is further configured to send a measurement time window, where the measurement time window is used to indicate a time for sidelink positioning measurement.

[0103] In one possible implementation, the measurement report also includes at least one of the following: the antenna port number corresponding to the first channel, the measurement time, the third indication information, and the fourth indication information; wherein the measurement time is used to indicate the time when the second communication device performs the side link positioning measurement, the third indication information is used to indicate whether the side link positioning measurement is performed based on the first channel, and the fourth indication information is used to indicate whether the decoding data inverse encoding and the modulation process are used to enhance the channel estimation of the data signal when performing the side link positioning measurement based on the first channel.

[0104] In one possible implementation, when the communication device is a device to be positioned, the processing unit is further used to obtain side link resources, and the bandwidth corresponding to the side link resources is greater than or equal to the minimum measurement bandwidth requirement; the transceiver unit is further used to send a data signal on the first channel based on the side link resources.

[0105] The explanation and beneficial effects of the communication device-related contents provided in the tenth aspect can be referred to the method shown in the fourth aspect and will not be repeated here.

[0106] In the eleventh aspect, a communication device is provided, comprising a unit for executing the method shown in the fifth aspect above. The communication device may be a second communication device, or may be executed by a chip or circuit arranged in the second communication device. This application does not limit this.

[0107] The communication device comprises:

[0108] The transceiver unit is used to receive second information, where the second information is used to instruct the second communication device to perform sidelink positioning measurement based on the first channel, where the first channel is a symbol channel used to carry data signals, and the second information includes a minimum measurement bandwidth requirement, where the minimum measurement bandwidth requirement is used to indicate the minimum value of the bandwidth of the first channel; when the communication device determines that the bandwidth of the first channel is greater than or equal to the minimum measurement bandwidth requirement, the processing unit is used to perform sidelink positioning measurement based on the first channel; the transceiver unit is also used to send a measurement report, where the measurement includes information for indicating the result of the sidelink positioning measurement, and the measurement report includes the positioning measurement amount and bandwidth information corresponding to the first channel.

[0109] In a possible implementation manner, the transceiver unit is further configured to receive a measurement time window, where the measurement time window is used to indicate a time for sidelink positioning measurement.

[0110] In one possible implementation, the measurement report also includes at least one of the following: the antenna port number corresponding to the first channel, the measurement time, the third indication information, and the fourth indication information; wherein the measurement time is used to indicate the time when the second communication device performs the side link positioning measurement, the third indication information is used to indicate whether the side link positioning measurement is performed based on the first channel, and the fourth indication information is used to indicate whether the decoding data de-encoding and modulation process is used to enhance the channel estimation of the data signal when performing the side link positioning measurement based on the first channel.

[0111] In one possible implementation, the transceiver unit is further used to receive second information from the device to be located; the transceiver unit is further used to receive a data signal from the device to be located on a first channel based on a side link resource, and the bandwidth corresponding to the side link resource is greater than or equal to the minimum measurement bandwidth requirement.

[0112] In a possible implementation manner, the transceiver unit is further configured to send a measurement report to the device to be located.

[0113] In a possible implementation manner, the transceiver unit is further configured to receive second information from a location management function network element LMF; and the transceiver unit is further configured to send the second information to the device to be located.

[0114] In one possible implementation, the transceiver unit is further used to receive a data signal from the device to be located on a first channel based on a side link resource, and the bandwidth corresponding to the side link resource is greater than or equal to the minimum measurement bandwidth requirement; the transceiver unit is also used to send a measurement report to the LMF.

[0115] The explanation and beneficial effects of the communication device-related contents provided in the eleventh aspect can be referred to the method shown in the fifth aspect and will not be repeated here.

[0116] In the twelfth aspect, a communication device is provided, comprising a unit for executing the method shown in the sixth aspect above. The communication device may be a device to be located, or may be executed by a chip or circuit provided in the device to be located. This application does not limit this.

[0117] The communication device comprises:

[0118] The transceiver unit is used to receive second information from a second communication device, where the second information is used to instruct the second communication device to perform sidelink positioning measurement based on the first channel. The second communication device is a device with known position information, and the first channel is a symbol channel used to carry data signals. The second information includes a minimum measurement bandwidth requirement, which is used to indicate the minimum value of the bandwidth of the first channel. The receiving and processing unit is also used to obtain sidelink resources, and the bandwidth corresponding to the sidelink resources is greater than or equal to the minimum measurement bandwidth requirement. The transceiver unit is also used to send data signals to the second communication device on the first channel based on the sidelink resources.

[0119] The explanation and beneficial effects of the communication device-related contents provided in the twelfth aspect can refer to the method shown in the sixth aspect and will not be repeated here.

[0120] In the thirteenth aspect, a communication device is provided, which includes: a memory for storing programs; and at least one processor for executing computer programs or instructions stored in the memory to execute a method of any possible implementation method of the above-mentioned first to sixth aspects.

[0121] In one implementation, the apparatus is a first communication device.

[0122] In another implementation, the apparatus is a chip, a chip system, or a circuit used in a first communication device.

[0123] In a fourteenth aspect, the present application provides a processor for executing the methods provided in the above aspects.

[0124] For the operations such as sending and acquiring / receiving involved in the processor, unless otherwise specified, or if they do not conflict with their actual functions or internal logic in the relevant descriptions, they can be understood as processor output, reception, input and other operations, and can also be understood as sending and receiving operations performed by the radio frequency circuit and antenna. This application does not limit this.

[0125] In a fifteenth aspect, a computer-readable storage medium is provided, which stores a program code for execution by a device, and the program code includes a method for executing any possible implementation of the above-mentioned first to sixth aspects.

[0126] In the sixteenth aspect, a computer program product comprising instructions is provided, which, when run on a computer, enables the computer to execute a method according to any possible implementation method of the first to sixth aspects above.

[0127] In the seventeenth aspect, a chip is provided, which includes a processor and a communication interface. The processor reads instructions stored in a memory through the communication interface and executes a method of any possible implementation method of the above-mentioned first to sixth aspects.

[0128] Optionally, as an implementation method, the chip also includes a memory, in which a computer program or instruction is stored, and the processor is used to execute the computer program or instruction stored in the memory. When the computer program or instruction is executed, the processor is used to execute the method of any possible implementation method of the first to sixth aspects above. BRIEF DESCRIPTION OF THE DRAWINGS

[0129] FIG1 shows a schematic diagram of a network architecture applicable to an embodiment of the present application.

[0130] FIG2 shows a schematic diagram of another network architecture applicable to an embodiment of the present application.

[0131] FIG3 shows a schematic diagram of the time difference of arrival positioning technology.

[0132] FIG4 shows a schematic flow chart of a communication method 400 provided in an embodiment of the present application.

[0133] FIG5 shows a schematic flow chart of a communication method 500 provided in an embodiment of the present application.

[0134] FIG6 shows a schematic diagram of a reference signal continuously distributed in the frequency domain applicable to an embodiment of the present application.

[0135] FIG7 shows a schematic diagram of a non-continuous distribution of reference signals in the frequency domain applicable to an embodiment of the present application.

[0136] FIG8 shows a schematic flow chart of a communication method 800 provided in an embodiment of the present application.

[0137] FIG9 shows a schematic flowchart of a communication method 900 provided in an embodiment of the present application.

[0138] FIG10 shows a schematic block diagram of a communication device 1000 provided in an embodiment of the present application.

[0139] FIG11 shows a schematic block diagram of another communication device 1100 provided in an embodiment of the present application.

[0140] FIG12 shows a schematic diagram of a chip system 1200 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0141] The technical solution in this application will be described below with reference to the accompanying drawings.

[0142] The technical solutions provided in this application can be applied to various communication systems, such as: fifth generation (5G) or new radio (NR) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, etc. The technical solutions provided in this application can also be applied to future communication systems. The technical solutions provided in this application can also be applied to device to device (D2D) communication, vehicle-to-everything (V2X) communication, machine to machine (M2M) communication, machine type communication (MTC), and Internet of Things (IoT) communication systems or other communication systems. This application is not limited to this.

[0143] In the embodiment of the present application, the network device can be any device with wireless transceiver function. The device includes but is not limited to: an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (e.g., a home evolved NodeB, or a home Node B, HNB), a baseband unit (BBU), an access point (AP) in a wireless fidelity (WiFi) system, a wireless relay node, a wireless backhaul node, a transmission point (TP) or a transmission and reception point (TRP), etc. It can also be a 5G, such as a next generation Node Base station (gNB) in an NR system, or a transmission point (TRP or TP), one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or a network node constituting a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit (DPU). unit, DU), etc., or base stations in future communication systems, etc.

[0144] In some deployments, a gNB may include a centralized unit (CU) and a DU. The gNB may also include an active antenna unit (AAU). The CU implements some gNB functions, while the DU implements some gNB functions. For example, the CU is responsible for processing non-real-time protocols and services, and implementing the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers. The DU is responsible for processing physical layer protocols and real-time services, and implementing the functions of the radio link control (RLC), medium access control (MAC), and physical (PHY) layers. The AAU implements some physical layer processing functions, RF processing, and active antenna-related functions. Because RRC layer information ultimately becomes PHY layer information, or is converted from PHY layer information, in this architecture, higher-layer signaling, such as RRC layer signaling, can also be considered to be sent by the DU, or by both the DU and the AAU. It is understood that a network device can be a device that includes one or more of a CU node, a DU node, or an AAU node. In addition, the CU may be classified as a network device in an access network (radio access network, RAN), or may be classified as a network device in a core network (core network, CN), which is not limited in this application.

[0145] Network equipment provides services for cells, and terminal devices communicate with cells through transmission resources allocated by the network equipment (for example, frequency domain resources, or spectrum resources). The cell can belong to a macro base station (for example, a macro eNB or macro gNB), or to a base station corresponding to a small cell. Small cells here can include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0146] In an embodiment of the present application, the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.

[0147] The terminal device may be a device that provides voice / data connectivity to users, such as a handheld device or vehicle-mounted device with wireless connection function. At present, some examples of terminals may include: mobile phones, tablet computers, computers with wireless transceiver functions (such as laptops, PDAs, etc.), mobile internet devices (MIDs), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or future evolved public land mobile communication networks (PLMNs). terminal equipment in network, PLMN, etc.

[0148] Wearable devices, also known as wearable smart devices, are a general term for wearable devices that use wearable technology to intelligently design and develop wearable devices for daily wear, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include those that are fully functional, large in size, and can achieve full or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0149] Furthermore, terminal devices can also be end devices in the Internet of Things (IoT) system. IoT is a crucial component of future information technology development. Its primary technical feature is connecting objects to the Internet through communication technologies, thereby enabling intelligent networks that interconnect humans and machines, and objects and things. IoT technology, for example, utilizes narrowband NB technology to achieve massive connectivity, deep coverage, and power-saving terminals.

[0150] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Among them, in the description of the present application, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship. For example, A / B can represent A or B; "and / or" in the present application is only a description of an association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, bc, ac, or abc, where a, b, c can be single or multiple. In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit differences. At the same time, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0151] In addition, 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. Ordinary technicians in this field can know 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 also applicable to similar technical problems.

[0152] To facilitate understanding of the embodiments of the present application, a schematic diagram of a communication system 100 used in the embodiments of the present application is first described in detail with reference to FIG1 .

[0153] As shown in Figure 1, the communication system 100 includes a terminal device (represented as a UE in Figure 1) and a radio access network (represented as a gNB and a next generation evolved node B (ng-eNB) in Figure 1). ng-eNB represents an LTE base station accessing the 5G core network, and gNB represents a 5G base station accessing the 5G core network. It should be understood that the communication system 100 shown in Figure 1 may include one or more base stations (including ng-eNB or gNB), and may also include one or more terminal devices, for example, one or more terminal device groups, etc., which are not shown in Figure 1 and are not limited in this application. It should be understood that communication between ng-eNB and gNB, or between two ng-eNBs, or between two gNBs is carried out through the Xn interface, which can also be called the XnAP interface. The gNB or Ng-eNB communicates with the UE through the air interface (the radio interface between UTRAN and UE, Uu interface), and the UEs communicate with each other through the proximity-based services communication 5 (PC5) interface.

[0154] FIG2 is a schematic diagram of another communication system 200 applied in an embodiment of the present application.

[0155] As shown in FIG2 , a communication system 200 includes a terminal device (denoted as UE in FIG2 ), a radio access network (denoted as a next generation radio access network (NG-RAN) in FIG2 ) and a core network.

[0156] The radio access network consists of one or more ng-eNBs and gNBs. The radio access network is connected to the core network through the NG-C interface.

[0157] The core network includes other functions such as access and mobility management function (AMF) and location management function (LMF).

[0158] The LMF is responsible for supporting different types of location services related to the UE, including positioning the UE and transmitting auxiliary data to the UE. The control plane and user plane of the LMF are the enhanced-serving mobile location center (E-SMLC) and the secure user plane locator platform (SLP), respectively. The LMF may exchange signals with the RAN, such as the ng-eNB or gNB, and the UE. For example, the LMF and the ng-eNB or gNB exchange information through the new radio positioning protocol annex (NRPPa) message, such as obtaining the configuration information of the positioning reference signal (PRS), the sounding reference signal (SRS), cell timing, cell location information, etc. For another example, the LMF and the UE transmit UE capability information, auxiliary information, measurement information, etc. through the LTE positioning protocol (LPP) message.

[0159] The AMF can receive location service requests related to the UE from the location service (LCS) entity of the 5G core network (5G core, 5GC), or the AMF itself can start some location services on behalf of a specific UE and forward the location service request to the LMF.

[0160] The terminal device connects to the radio access network via the ng-eNB via the LTE-Uu interface. The terminal device can also connect to the radio access network via the gNB via the NR-Uu interface.

[0161] It should be understood that the communication system 200 may include one or more base stations (including ng-eNB or gNB).

[0162] It should also be understood that the communication system 200 may include one or more terminal devices, for example, one or more terminal device groups.

[0163] It should also be understood that a gNB can send data or control signaling to one or more terminal devices. Multiple gNBs can also send data or control signaling to a terminal device simultaneously.

[0164] It should be understood that the ng-eNB in ​​Figure 2 can also be replaced by TP.

[0165] To facilitate understanding of the embodiments of the present application, the following is a brief introduction to the terms involved in the embodiments of the present application.

[0166] 1. Positioning technology

[0167] Positioning is a critical function in mobile communication systems, requiring them to provide real-time user location information. 5G communication systems place high-precision demands on positioning, requiring an error of less than 10 meters outdoors and less than 1 meter indoors.

[0168] Existing positioning technologies mainly include uplink positioning, downlink positioning, and uplink and downlink positioning. In uplink positioning, the base station measures the SRS signal sent by the UE, while in downlink positioning, the UE measures the PRS signal sent by the base station. In uplink and downlink positioning, the UE is required to measure both the PRS signal sent by the base station and the SRS signal sent by the UE.

[0169] The 3GPP Release 17 standard supports multiple positioning technologies, including downlink time difference of arrival (DL-TDOA), downlink angle of departure (DL-AOD), uplink time difference of arrival (UL-TDOA), uplink angle of arrival (UL-AOA), and multi-round trip time (multi-RTT). DL-TDOA, UL-TDOA, and multi-RTT are time-of-arrival (TOA)-based positioning technologies, requiring the receiver to measure the arrival time of the signal sent by the transmitter and convert it into the distance between the two to ultimately determine the location of the target. DL-AOD and UL-AOA are angle-based positioning technologies, requiring the receiver to measure the arrival angle of a reference signal sent by the transmitter and then infer the receiver's location based on the angle information between the receiver and multiple transmitters with known locations.

[0170] 2. Time difference of arrival (TDOA) positioning technology

[0171] The TDOA positioning principle is to locate the source of radio signals by measuring the time difference between the arrival of radio signals at different monitoring stations. Specifically, the positioning management device calculates the time difference between the arrival of radio signals at two monitoring stations, and uses this time difference to derive the distance difference, thereby generating a hyperbola. The positioning management device can then generate two or more hyperbolas based on the time differences measured at three or more monitoring stations. Furthermore, the positioning management device locates the source based on the intersection of these two or more hyperbolas.

[0172] Figure 3 is a schematic diagram of TDOA positioning technology. The terminal device in Figure 3 corresponds to the transmitter that transmits the radio signal in this TDOA positioning technology, and base stations 1, 2, and 3 in Figure 3 correspond to the monitoring stations that measure the radio signals in this TDOA positioning technology. Specifically, the terminal device transmits a signal, and base stations 1, 2, and 3 measure the signal transmitted by the terminal device.

[0173] As an example, the time difference between the arrival of the signal sent by the terminal device at base station 1 and base station 2 is Δt1, and the time difference between the arrival of the signal sent by the terminal device at base station 2 and base station 3 is Δt2. Multiplying the time difference Δt1 by the speed of electromagnetic waves yields the distance difference L1, and multiplying the time difference Δt2 by the speed of electromagnetic waves yields the distance difference L2. Based on the functional relationship between the position of base station 1, the position of base station 2, and the distance difference L1, the positioning management device obtains the hyperbola MN shown in FIG3. Based on the functional relationship between the position of base station 2, the position of base station 3, and the distance difference L2, the positioning management device obtains the hyperbola RS shown in FIG3. Furthermore, the positioning management device can locate the terminal device based on the intersection of the hyperbola MN and the hyperbola RS.

[0174] In Figure 3, one of base station 1, base station 2 and base station 3 is the serving base station of the terminal equipment, and the other two base stations are neighboring base stations of the terminal equipment.

[0175] A terminal device's serving base station is the base station currently providing communication connectivity services to the terminal device. A terminal device's neighboring base station is a base station adjacent to the serving base station. In other words, the serving base station is the base station of the terminal device's serving cell. A neighboring base station is a base station in a cell adjacent to the terminal device's serving cell.

[0176] It should be noted that in FIG3 , three base stations are used to realize the positioning of the terminal device, but this application does not limit this. In actual applications, more than three base stations can also be used to realize the positioning of the terminal device.

[0177] Based on the communication system shown in Figures 1 and 2, for the sidelink scenario, positioning measurement is currently mainly performed by introducing a sidelink positioning reference signal (SL-PRS). Specifically, in a shared resource pool (a resource pool that can simultaneously carry sidelink positioning reference signals and sidelink communication signals, where the resource pool is a set of time-frequency resources for sidelink communication pre-configured by the network upper layer), the SL-PRS is embedded in the time slot where the physical layer sidelink shared channel (PSSCH) is located (where the SL-PRS has the same bandwidth and transmission power as the PSSCH), so that the SL-PRS and PSSCH are sent together in one time slot, and the receiving user receives the SL-PRS signal and performs measurement, thereby obtaining positioning measurement. However, since sending SL-PRS requires additional time-frequency resources, and in a shared resource pool, data and SL-PRS can be sent simultaneously, resources are becoming increasingly scarce, and the SL-PRS configuration mechanism is becoming increasingly complex, and it may even be possible that SL-PRS cannot be configured, thus failing to maximize resource utilization.

[0178] On the other hand, since sidelink communications use subchannels as frequency domain scheduling units in the resource pool (sidelink resource pool subchannels: in the frequency domain, the total bandwidth of the resource pool is divided into several subchannels of equal bandwidth, and sidelink communication resource scheduling is performed in subchannel units in the frequency domain), it is impossible to ensure that the bandwidth of the sidelink reference signal used for positioning measurements is large enough. Since bandwidth is positively correlated with positioning accuracy, it cannot meet the positioning accuracy requirements. At the same time, ignoring the data transmission bandwidth within the time window and performing positioning indiscriminately may result in many useless positioning measurements (such as very small data frequency domain bandwidth). In addition, due to the existence of sidelink mode 2, that is, the user perceives resources and schedules resources independently, the bandwidth of the resources used for data transmission in the frequency domain varies. The receiver of the measurement quantity cannot know the measurement bandwidth of its positioning measurement, cannot judge the accuracy of the measurement quantity, and thus cannot provide the accuracy range of the positioning result.

[0179] This application provides a sidelink positioning method that uses a reference signal for data demodulation to perform positioning measurements without occupying additional resources, thereby improving resource utilization. It also improves positioning accuracy and reliability by indicating the bandwidth requirements for positioning measurements.

[0180] A sidelink positioning method proposed in this application is described in detail below with reference to FIG4 .

[0181] FIG4 is a schematic diagram of a sidelink positioning method 400 provided in an embodiment of the present application.

[0182] 410. The first communication device sends first information.

[0183] The first information is used to instruct the second communication device to perform sidelink positioning measurement based on the reference signal.

[0184] It should be understood that for different positioning scenarios, the first communication device sends the first information in different ways.

[0185] In a possible implementation manner, in a scenario of relative or absolute positioning initiated between user equipments, a first communication device sends first information to a second communication device.

[0186] The first communication device is a device with communication and positioning requirements, such as a terminal device.

[0187] Among them, the second communication device is a device with positioning capability. For example, in the absolute positioning scenario initiated between user devices, the second communication device is a device with known location information, which can be a terminal device with known location information, a road side unit (RSU), etc. The location information of the anchor device can be stored in the LMF or transmitted to the device to be positioned, etc.; for another example, in the relative positioning scenario initiated between user devices, the second communication device can be a terminal device with unknown location information, etc., and this application does not limit this.

[0188] Among them, RSU can be regarded as a terminal device with a fixed location, which is mainly used to communicate with traditional terminal devices to provide public signal configuration information and assist in information sharing between terminal devices.

[0189] Exemplarily, the first communication device is a device to be located (or a target device), and the second communication device is an anchor device.

[0190] In one possible implementation, when the device to be located (or target device) is within network coverage, the first communication device sends first information to the second communication device, and the second communication device forwards the first information to the device to be located (or target device).

[0191] Exemplarily, the first communication device is a LMF, and the second communication device is a device with positioning capability, such as an anchor device.

[0192] It should be understood that in a scenario where the device to be located (or target device) is within the coverage of the network, the LMF initiates positioning measurement and performs positioning.

[0193] The first information includes a minimum measurement bandwidth requirement, and the minimum measurement bandwidth requirement is used to indicate a minimum value of a bandwidth of a reference signal.

[0194] The reference signal is a data demodulation reference signal or a channel sounding reference signal. Exemplarily, the reference signal includes at least one of the following:

[0195] Physical sidelink shared channel demodulation reference signal (PSSCH DMRS), physical sidelink control channel demodulation reference signal (PSCCH DMRS), physical sidelink broadcast channel demodulation reference signal (PSBCH DMRS), sidelink channel state information reference signal (SL CSI-RS), sidelink phase tracking reference signal (SL PT-RS).

[0196] It should be understood that, in the present application, the reference signal is a reference signal other than the SL-PRS, or in other words, the reference signal is a reference signal other than the SL-PRS. In other words, the first information is used to instruct the second communication device to perform a sidelink positioning measurement based on the reference signal, and it can also be understood that the first information is used to instruct the second communication device to perform a sidelink positioning measurement based on a reference signal other than the SL-PRS.

[0197] It should be noted that, in this application, the reference signal may also be referred to as a pilot signal, and this application does not limit this.

[0198] 420. When the second communications device determines that the bandwidth of the reference signal is greater than or equal to the minimum measurement bandwidth requirement, the second communications device performs sidelink positioning measurement based on the reference signal.

[0199] Specifically, after the second communication device receives the reference signal, when the second communication device determines that the bandwidth of the reference signal is greater than or equal to the minimum measurement bandwidth requirement included in the first information received by the second communication device in 410, the second communication device performs sidelink positioning measurement based on the reference signal.

[0200] It should be noted that the specific process of the second communication device performing side link positioning measurement based on the reference signal can refer to the specific method of side link positioning measurement in the prior art, and this application is not limited to this.

[0201] 430. The second communication device sends a measurement report.

[0202] The measurement report is used to indicate the result of the sidelink positioning measurement. The measurement report is obtained by performing the sidelink positioning measurement based on the reference signal.

[0203] Specifically, the measurement report includes the positioning measurement value and bandwidth information corresponding to the reference signal.

[0204] The positioning measurement value is a measurement value obtained by the second communication device performing sidelink positioning measurement based on the reference signal, and the positioning measurement value is used by the first communication device to determine the position of the device to be positioned.

[0205] Exemplarily, the positioning measurement quantity may be the angle of arrival (AOA) of the reference signal, the sidelink relative time of arrival (SL-RTOA) of the reference signal, etc., which is not limited in this application.

[0206] The bandwidth information corresponding to the reference signal is the actual bandwidth of the reference signal, and the actual bandwidth of the reference signal is greater than or equal to the minimum measurement bandwidth requirement. Specifically, the bandwidth information corresponding to the reference signal is the bandwidth occupied by the reference signal in the frequency domain.

[0207] Optionally, the measurement report further includes at least one of the following:

[0208] The antenna port number corresponding to the reference signal, the measurement time, and the location of the time-frequency resources corresponding to the reference signal.

[0209] The antenna port number corresponding to the reference signal is the antenna port number corresponding to the reference signal received by the second communication device.

[0210] The measurement time is the time when the second communication device performs sidelink positioning measurement.

[0211] In a possible implementation manner, the second communication device sends a measurement report to the first communication device.

[0212] It should be understood that the second communication device sending a measurement report to the first communication device can be understood as the second communication device sending a measurement report to the device that initiates and performs positioning measurements. For example, in the scenario of relative or absolute positioning initiated between user devices, the first communication device can be the device to be positioned; in the scenario where the device to be positioned is within the network coverage area, the first communication device can be the LMF.

[0213] In the above solution, the first communication device further limits the minimum measurement accuracy (the bandwidth is positively correlated with the positioning measurement accuracy) by instructing the second communication device to perform the sidelink positioning measurement during the sidelink positioning measurement, thereby improving the positioning measurement accuracy. On the other hand, indicating the minimum measurement bandwidth can also reduce invalid positioning measurements and reduce power consumption. In addition, by instructing the first communication device to use reference signals other than SL-PRS for sidelink positioning measurements, it can avoid occupying additional time-frequency resources.

[0214] Optionally, the method 400 further includes: 440, the first communications device determines location information of the device to be located according to the measurement report.

[0215] Specifically, after the first communication device receives the measurement report from the second communication device in 430 , the first communication device determines the location information of the device to be located according to the positioning measurement value and the bandwidth information corresponding to the reference signal included in the measurement report.

[0216] It should be noted that the manner in which the first communication device determines the location information of the device to be located according to the positioning measurement value may refer to the specific process of determining the location information of the device to be located according to the positioning measurement value in the prior art, and this application is not limited thereto.

[0217] It should be understood that the first communications device obtains the bandwidth corresponding to the current positioning measurement based on the bandwidth information corresponding to the reference signal in the measurement report, thereby determining the accuracy range corresponding to the positioning measurement amount. When bandwidth information corresponding to multiple reference signals is reported, the first communications device can select the positioning measurement amount with the larger positioning measurement bandwidth for positioning, further improving positioning accuracy.

[0218] It should be understood that if the measurement report includes the antenna port number corresponding to the reference signal, when the first communication device sends multiple reference signals through multiple antenna ports, the first communication device can obtain the reference signal corresponding to the current positioning measurement based on the antenna port number corresponding to the reference signal in the measurement report, thereby determining the location information of the device to be positioned based on the reference signal.

[0219] It should be understood that if the measurement report includes the measurement time, the first communication device can perform positioning calculations based on the measurement time reported by the second communication device using positioning measurement quantities that are close in time, thereby improving positioning accuracy and reliability.

[0220] It should be understood that if the measurement report includes the location of the time-frequency resources corresponding to the reference signal, the first communication device can determine the time-frequency density of the reference signal based on the location of the time-frequency resources corresponding to the reference signal, and determine the reliability of the measurement (the greater the time-frequency density, the higher the reliability), thereby selecting the positioning measurement amount corresponding to the larger time-frequency density of the reference signal under the same measurement bandwidth to improve the positioning accuracy.

[0221] It should be noted that this application does not limit the number of first communication devices and second communication devices.

[0222] For example, in the above 430, at least three second communication devices send measurement reports to the first communication device. In 440, the first communication device determines the location information of the device to be located according to the at least three measurement reports.

[0223] Optionally, the method 400 further includes: 450, the first communications device sends a measurement time window.

[0224] The measurement time window is used to indicate the time for sidelink positioning measurement.

[0225] It should be understood that the present application does not limit the order of 410 and 450. For example, the first communication device may first send the first information and then send the measurement time window, that is, execute 410 first and then execute 450; or, the first communication device may first send the measurement time window and then send the first information, that is, execute 450 first and then execute 410; or, the first communication device may send the first information and the measurement time window at the same time, that is, execute 410 and 450 at the same time.

[0226] Optionally, when the first communication device is the device to be positioned in the scenario of relative or absolute positioning initiated between user devices, the first communication device also needs to obtain side link resources and send a reference signal to the second communication device, and method 400 also includes 460-461.

[0227] 460. The first communication device obtains a sidelink resource.

[0228] The bandwidth corresponding to the sidelink resource is greater than or equal to the minimum measurement bandwidth requirement. It should be understood that the bandwidth corresponding to the sidelink resource is greater than or equal to the minimum measurement bandwidth requirement, which can be understood as the first communication device obtaining the sidelink resource needs to meet the minimum measurement bandwidth requirement while meeting the communication requirements.

[0229] In one possible implementation, the first communication device obtains sidelink resources through mode 1 or mode 2.

[0230] In mode 1, when the target device is within the coverage of the base station, it requests sidelink resources from the base station. After receiving the request, the base station schedules the sidelink resources for the target device, and the target device obtains the sidelink resources. In mode 2, the target device independently obtains sidelink resources based on perception. Specifically, the target device receives sidelink control information and channel capability perception results, excludes occupied sidelink resources, and selects and occupies the remaining sidelink resources to obtain sidelink resources.

[0231] It should be noted that the first communication device may obtain side link resources through mode 1 or mode 2 by referring to the specific method of obtaining side link resources in the prior art, and this application does not limit this.

[0232] 461. The first communication device sends a reference signal on a sidelink resource. Specifically, after acquiring a sidelink resource that meets the minimum measurement bandwidth requirement, the first communication device sends a reference signal to the second communication device on the sidelink resource.

[0233] Optionally, when the device to be located is within the network coverage and the positioning measurement is initiated by LMF, that is, when the first communication device is LMF, the device to be located also needs to obtain side link resources and send a reference signal to the second communication device. Method 400 also includes 470-471.

[0234] 470. The device to be located obtains sidelink resources.

[0235] The bandwidth corresponding to the sidelink resource is greater than or equal to the minimum measurement bandwidth requirement. It should be understood that the sidelink resource meeting the minimum measurement bandwidth requirement can be understood as the first communication device obtaining the sidelink resource needs to meet the minimum measurement bandwidth requirement while meeting the communication requirements.

[0236] In a possible implementation manner, the device to be located obtains sidelink resources through mode 1 or mode 2.

[0237] 471. The device to be positioned sends a reference signal on a sidelink resource. Specifically, after acquiring a sidelink resource that meets the minimum measurement bandwidth requirement, the device to be positioned sends a reference signal to the second communication device on the sidelink resource.

[0238] The above is combined with Figure 4 to illustrate a side link positioning method provided by the present application. Based on Figure 4 and in combination with Figures 5-6, the process of side link positioning in different positioning measurement scenarios is described in detail.

[0239] The following, combined with Figure 5, describes in detail a sidelink positioning method proposed in this application for scenarios of relative or absolute positioning initiated between user devices (devices to be positioned). Figure 5 can refer to the description of Figure 4. For ease of explanation, the first network device in Figure 4 is referred to as the device to be positioned, and the second network device is referred to as the anchor device.

[0240] FIG5 is a schematic diagram of a sidelink positioning method 500 provided in an embodiment of the present application.

[0241] 510. The device to be located obtains sidelink resources.

[0242] The device to be located may also be referred to as a target device, or a device with communication and positioning requirements, such as a terminal device.

[0243] The sidelink resources are used to send positioning measurement related signaling and sidelink communication data.

[0244] In a possible implementation manner, the device to be located obtains sidelink resources through mode 1 or mode 2.

[0245] It should be noted that the process of the above-mentioned device to be located obtaining side link resources through mode 1 or mode 2 can refer to the relevant description of the first communication device obtaining side link resources through mode 1 or mode 2 in 460. Here, in order to avoid redundancy, its detailed description is omitted.

[0246] 520. The device to be positioned sends first information to the anchor device.

[0247] Correspondingly, the anchor device receives the first information from the device to be located.

[0248] The first information is used to instruct the anchor device to perform positioning measurement based on the reference signal sent by the device to be positioned. It should be noted that in this application, the reference signal may also be referred to as a pilot signal, which is not limited in this application.

[0249] It should be noted that the above-mentioned reference signal can refer to the relevant description of the reference signal in 410. Here, in order to avoid redundancy, its detailed description is omitted.

[0250] Among them, the anchor device is a device with positioning capability. For example, in the absolute positioning scenario initiated between user devices, the anchor device is a device with known location information, which can be a terminal device or RSU with known location information; for example, in the relative positioning scenario initiated between user devices, the anchor device can be a terminal device with unknown location information, etc. This application does not limit this.

[0251] The first information includes a minimum measurement bandwidth requirement, and the minimum measurement bandwidth requirement is used to indicate a minimum value of a bandwidth of a reference signal.

[0252] It should be understood that the accuracy of the positioning measurement is positively correlated with the bandwidth (for example, in time of arrival (TOA) positioning measurement, the larger the bandwidth, the smaller the lower bound of the error and the higher the accuracy of the positioning measurement). Therefore, only when the positioning measurement meets certain bandwidth requirements can it provide corresponding positioning accuracy.

[0253] In a possible implementation manner, the device to be positioned determines a minimum measurement bandwidth requirement based on a current positioning accuracy requirement.

[0254] Optionally, in 521 , the device to be positioned sends a measurement time window to the anchor device.

[0255] The measurement time window is used to indicate the time when a possible positioning measurement occurs.

[0256] Exemplarily, the measurement time window includes the measurement duration, for example, performing positioning measurement in [t1, t2]; the measurement time window can also be one or more time windows, for example, performing positioning measurement in [t1, t2] and [t3, t4]; the measurement time window can also be a measurement period and a measurement time window within a single period, for example, if the configuration {measurement time window is [t1, t2], period T}, then positioning measurement is performed in [t1, t2], [t1+T, t2+T], [t1+2T, t2+2T], etc., and the present application is not limited to this.

[0257] It should be noted that this application does not limit the order of 520 and 521. For example, the device to be located may first send the first information and then send the measurement time window, that is, execute 520 first and then execute 521; or, the device to be located may first send the measurement time window and then send the first information, that is, execute 521 first and then execute 520; or, the device to be located may send the first information and the measurement time window at the same time, that is, execute 520 and 521 at the same time.

[0258] 530. The device to be positioned sends a reference signal to the anchor device.

[0259] Accordingly, the anchor device receives the reference signal from the user equipment.

[0260] It should be understood that, since the sidelink resources acquired by the device to be positioned in 510 meet the bandwidth requirement for positioning, the resources used by the device to be positioned to send the reference signal meet the bandwidth requirement for positioning.

[0261] 540 , the anchor device determines whether the bandwidth of the reference signal meets the minimum measurement bandwidth requirement.

[0262] Optionally, when the anchor point device receives the measurement time window in 521 , the anchor point device determines whether the bandwidth of the reference signal meets the minimum measurement bandwidth requirement within the measurement time window.

[0263] In one possible implementation, when the anchor device determines that the bandwidth of the reference signal is greater than or equal to the minimum measurement bandwidth requirement, the anchor device performs sidelink positioning measurement based on the reference signal.

[0264] In one possible implementation, when the anchor device determines that the bandwidth of the reference signal is less than the minimum measurement bandwidth requirement, the anchor device does not perform sidelink positioning measurement.

[0265] Optionally, when the anchor point device determines not to perform the sidelink positioning measurement, the anchor point device sends measurement failure feedback information to the device to be positioned.

[0266] 550. The anchor device performs sidelink positioning measurement and determines a measurement report.

[0267] It should be understood that when the anchor device determines in 540 that the bandwidth of the reference signal is greater than or equal to the minimum measurement bandwidth requirement, the anchor device performs sidelink positioning measurement based on the reference signal and determines a measurement report.

[0268] It should be noted that the way in which the above-mentioned anchor device performs side link positioning measurements can refer to the specific process of positioning technology in the existing technology (for example, DL-TDOA, DL-AOD, UL-TDOA, UL-AOA, multi-RTT, etc.), and this application is not limited to this.

[0269] The measurement report includes the positioning measurement value and bandwidth information corresponding to the reference signal.

[0270] The positioning measurement quantity is obtained by the anchor device based on the reference signal, and the positioning measurement quantity is used by the device to be positioned to determine its position. For example, the positioning measurement quantity may be the angle of arrival (AOA) of the reference signal, the sidelink relative time of arrival (SL-RTOA) of the reference signal, etc., which is not limited in this application.

[0271] The bandwidth information corresponding to the reference signal is the actual bandwidth of the reference signal, and the actual bandwidth of the reference signal is greater than or equal to the minimum measurement bandwidth requirement. Specifically, the bandwidth information corresponding to the reference signal is the bandwidth occupied by the reference signal in the frequency domain.

[0272] Exemplarily, when the reference signal is PSSCH DMRS and the reference signal is continuously and evenly distributed in the frequency domain (eg, sidelink communication utilizes cellular spectrum), the bandwidth occupied by the reference signal reported by the anchor device in the frequency domain is shown in FIG6 .

[0273] For example, when the reference signal is PSSCH DMRS, and the reference signal is not continuously distributed in the frequency domain (for example, when using unlicensed spectrum, the minimum occupied bandwidth during transmission is specified (such as 20M), but the amount of user data is small at this time and cannot occupy the entire 20M bandwidth, then the entire bandwidth can be grouped, and different groups are separated by a certain bandwidth in the frequency domain. By occupying sub-channels in different groups, the data signal is ensured to be distributed over the entire bandwidth as much as possible. For example, 20M bandwidth corresponds to 16 sub-channels at this time, which can be divided into four groups from low to high according to the frequency point, {1, 2, 3, 4}, {5,6,7,8}, {9,10,11,12}, {13,14,15,16}. Due to the small amount of data, the user selects subchannels 1, 5, 9, and 13 for transmission, as shown in Figure 7, to achieve the purpose of distributing data as much as possible across the entire bandwidth. The anchor device reports the bandwidth occupied by the reference signal in the frequency domain, for example, reporting the occupancy index {1,5,9,13} in Figure 7, or reporting the group interval and the index of the subchannel occupied by the measurement signal within the group, group interval 4, and the occupied subchannel index within the group 1. It should be understood that in Figure 7, each of the subchannels 1, 5, 9, and 13 can be as shown in Figure 6. Figure 7 is only a brief illustration, and subchannels other than subchannels 1, 5, 9, and 13 are not drawn. This application does not limit this.

[0274] Optionally, the measurement report further includes at least one of the following:

[0275] The antenna port number corresponding to the reference signal, the measurement time, and the location of the time-frequency resources corresponding to the reference signal.

[0276] The antenna port number corresponding to the reference signal is the antenna port number corresponding to the reference signal received by the anchor device in 530 .

[0277] The measurement time is the time when the anchor device performs positioning measurement. It should be understood that the device to be positioned can use the positioning measurement data with similar time to perform positioning calculation based on the measurement time, thereby improving positioning accuracy and reliability.

[0278] The time-frequency resource position (resource pattern) corresponding to the reference signal is the resource distribution of the reference signal in a single subchannel. For example, the resource pattern corresponding to the reference signal is the interval (comb size) between two adjacent resource elements in the reference signal frequency domain (for example, the comb size is 2 in Figure 6), and the time domain position of the reference signal (for example, the time domain position of the PSSCH DMRS in Figure 6 is the 1st and 5th symbols starting with 0).

[0279] 560. The anchor device sends a measurement report to the user equipment.

[0280] Accordingly, the user equipment receives the measurement report from the anchor device.

[0281] 570. The device to be located determines the location of the device to be located according to the measurement report.

[0282] Specifically, after receiving the measurement report, the device to be positioned calculates the position of the device to be positioned according to the measurement report and the position of the anchor device.

[0283] In one possible implementation, the device to be located calculates the position of the device to be located based on the positioning measurement amount in the measurement report, the measurement bandwidth information corresponding to the reference signal, the antenna port number corresponding to the reference signal, the measurement time, the position of the time-frequency resource corresponding to the reference signal, and the position of the anchor device.

[0284] For example, the device to be positioned receives measurement reports reported by three anchor devices (anchor A, anchor B, and anchor C). Within the measurement time window, anchor A performs two positioning measurements A1 and A2. The measurement report reported by anchor A includes measurement report A1 and measurement report A2. Measurement report A1 includes {TOA: 9.5m; bandwidth: 40MHz; antenna port: #1; measurement time: 14:36:58; position of the time-frequency resource corresponding to the PSSCH DMRS: the 5th symbol in the time domain, the starting position of the frequency domain subchannel is 1, and the interval is 2, as shown in Figure 6.}, and measurement report A2 includes {TOA: 10m; bandwidth: 100MHz; antenna port: #1; measurement time: 14:36:59; position of the time-frequency resource corresponding to the PSSCH DMRS: the 5th symbol in the time domain, the starting position of the frequency domain subchannel is 1, and the interval is 2, as shown in Figure 6}. Similarly, anchor point B performed two positioning measurements, B1 and B2. The measurement reports reported by anchor point B include measurement report B1 and measurement report B2. Measurement report B1 is {TOA: 9.2m; bandwidth: 20MHz; antenna port: #1; measurement time 14:36:57; position of the time-frequency resource corresponding to the PSSCH DMRS: the 5th symbol in the time domain, the starting position of the frequency domain subchannel is 1, and the interval is 2, as shown in Figure 6}, and measurement report B2 is {TOA: 10m; bandwidth: 100M; antenna port: #1; measurement time 14:36:58; position of the time-frequency resource corresponding to the PSSCH DMRS: the 5th symbol in the time domain, the starting position of the frequency domain subchannel is 1, and the interval is 2, as shown in Figure 6}. Two measurements, C1 and C2, occurred at anchor point C. The measurement reports reported by anchor point C include measurement report C1 and measurement report C2. Measurement report C1 is {TOA: 7.5m; bandwidth: 80MHz; antenna port: #1; measurement time 14:36:58; location of the time-frequency resource corresponding to the PSSCH DMRS: the 5th symbol in the time domain, the starting position of the frequency domain subchannel is 1, and the interval is 2, as shown in Figure 6}, and measurement report C2 is {TOA: 6.5m; bandwidth: 20M; antenna port: #1; measurement time 14:36:58; location of the time-frequency resource corresponding to the PSSCH DMRS: the 5th symbol in the time domain, the starting position of the frequency domain subchannel is 1, and the interval is 2, as shown in Figure 6}. As shown above, the larger the bandwidth, the more accurate the TOA measurement. The device to be located is located based on the TOA corresponding to the A2, B2, and C1 measurements. The positions of the anchor device are (0, 0), (15, 0), and (7.5, 15). Through three-sided positioning, with the anchor position as the center and the TOA distance as the radius, the intersection of the three circles is the position to be located. The position of the device to be located determined by the device to be located based on the measurement report is (7.5, 7.5).

[0285] It should be understood that in the scenario of relative or absolute positioning initiated between user devices, in addition to the positioning measurement and positioning initiated by the device to be positioned as shown in Figure 5, the anchor device can also initiate positioning measurement and positioning, that is, the anchor device performs the actions of the device to be positioned in Figure 5, and the device to be positioned performs the actions of the anchor device in Figure 5. For example, the three anchor devices respectively obtain sidelink resources and respectively send first information and reference signals to the device to be positioned. When the device to be positioned determines that the bandwidth of the reference signal meets the minimum measurement bandwidth requirement, it performs sidelink positioning measurement, determines a measurement report, and sends the measurement report to the three anchor devices respectively. The three anchor devices jointly determine the position of the device to be positioned based on the measurement report and the positions of the three anchor devices. This application is not limited to this.

[0286] In the above scheme, for the scenario of relative or absolute positioning initiated between user devices (devices to be positioned), the device to be positioned further limits the minimum measurement accuracy (the bandwidth is positively correlated with the positioning measurement accuracy) by instructing the anchor device to perform the minimum measurement bandwidth for sidelink positioning measurement during the sidelink positioning measurement, thereby improving the positioning measurement accuracy. On the other hand, by indicating the minimum measurement bandwidth, invalid positioning measurements can be reduced and power consumption can be reduced. In addition, the first communication device can avoid occupying additional time-frequency resources by instructing the use of reference signals (reference signals) other than SL-PRS for sidelink positioning measurement.

[0287] The following, combined with Figure 8, describes in detail a sidelink positioning method proposed in this application for a scenario where the device to be positioned is within network coverage and the positioning measurement is initiated by the LMF. Figure 8 can refer to the description of Figure 4. For ease of explanation, the first network device in Figure 4 is referred to as the LMF, and the second network device is referred to as the anchor device.

[0288] FIG8 is a schematic diagram of a sidelink positioning method 800 provided in an embodiment of the present application.

[0289] 810. LMF sends first information to the anchor device.

[0290] Accordingly, the anchor device receives the first information from the LMF.

[0291] It should be understood that the device to be located and the anchor device have side link communication, and the side link related information (such as identification information of the device to be located and the anchor device, service information, etc.) has been interacted with the LMF through signaling. Therefore, the LMF knows the information of the device to be located (or called the device to be located) at this time, and also knows the information of the anchor device of its side link communication.

[0292] The first information is used to instruct the anchor device to perform sidelink positioning measurement based on the reference signal sent by the device to be positioned.

[0293] It should be noted that the above-mentioned reference signal can refer to the relevant description of the reference signal in 410. Here, in order to avoid redundancy, its detailed description is omitted.

[0294] The first information includes a minimum measurement bandwidth requirement, and the minimum measurement bandwidth requirement is used to indicate a minimum value of a bandwidth of a reference signal.

[0295] Optionally, in 811 , the LMF sends a measurement time window to the anchor device.

[0296] The measurement time window is used to indicate the time when a possible positioning measurement occurs.

[0297] Optionally, the first information further includes first indication information and / or a measurement time window.

[0298] It should be noted that, for the description of the above measurement time window, reference may be made to the relevant description in 521 , and here, in order to avoid redundancy, its detailed description is omitted.

[0299] 820. The anchor device sends first information to the user equipment.

[0300] Correspondingly, the device to be located receives the first information from the anchor device.

[0301] It should be understood that the anchor device forwards the first information received in 810 to the device to be located, so that the device to be located obtains channel resources that meet the measurement conditions (minimum measurement bandwidth requirements) included in the first information to send data, thereby improving the measurement success rate of the anchor device.

[0302] Optionally, in 821 , the anchor device sends a measurement time window to the device to be located.

[0303] Accordingly, the device to be positioned receives the measurement time window from the anchor device.

[0304] Specifically, when the anchor point device receives the measurement time window from the LMF in 811, the anchor point device forwards the measurement time window to the device to be positioned.

[0305] 830. The device to be located obtains sidelink resources.

[0306] Specifically, the device to be located obtains channel resources that meet the measurement conditions based on the minimum measurement bandwidth requirement in the first information.

[0307] It should be noted that, for the process in which the device to be located obtains the sidelink resource, reference may be made to the relevant description of the first communication device obtaining the sidelink resource in 460 . Here, in order to avoid redundancy, its detailed description is omitted.

[0308] 840. The device to be positioned sends a reference signal to the anchor device.

[0309] Accordingly, the anchor device receives the reference signal from the user equipment.

[0310] It should be understood that, since the sidelink resources acquired by the device to be positioned in 830 meet the bandwidth requirement for positioning, the resources used by the device to be positioned to send the reference signal meet the bandwidth requirement for positioning.

[0311] 850. The anchor device determines whether the bandwidth of the reference signal meets the minimum measurement bandwidth requirement.

[0312] It should be noted that the process of the anchor device determining whether the bandwidth of the reference signal meets the minimum measurement bandwidth requirement is similar to the process of 540. Please refer to the relevant description of 540. Here, in order to avoid redundancy, its detailed description is omitted.

[0313] 860. The anchor point device performs positioning measurement and determines a measurement report.

[0314] It should be noted that the process of the above-mentioned anchor device performing positioning measurement and determining the measurement report is similar to the process of 550. Please refer to the relevant description of 550. Here, in order to avoid redundancy, its detailed description is omitted.

[0315] 870. The anchor device sends a measurement report to the LMF.

[0316] Accordingly, the LMF receives the measurement report from the anchor device.

[0317] 880. The LMF determines the position of the device to be located according to the measurement report.

[0318] Specifically, after receiving the measurement report, the LMF calculates the position of the device to be located based on the measurement report and the position of the anchor device.

[0319] In one possible implementation, LMF calculates the position of the device to be located based on the positioning measurement amount in the measurement report, the measurement bandwidth information corresponding to the reference signal, the antenna port number corresponding to the reference signal, the measurement time, the position of the time-frequency resource corresponding to the reference signal, and the position of the anchor device.

[0320] It should be noted that the process of the above-mentioned LMF determining the position of the device to be located according to the measurement report can refer to the specific process of the device to be located determining the position of the device to be located according to the measurement report in 570. Here, in order to avoid redundancy, its detailed description is omitted.

[0321] In the above scheme, for the scenario where the device to be positioned is within the coverage of the network and the positioning measurement is initiated by LMF, LMF further limits the minimum measurement accuracy (the bandwidth is positively correlated with the positioning measurement accuracy) by instructing the anchor device to perform the minimum measurement bandwidth for sidelink positioning measurement during the sidelink positioning measurement, thereby improving the positioning measurement accuracy. On the other hand, by indicating the minimum measurement bandwidth, invalid positioning measurements can also be reduced and power consumption can be reduced. In addition, the first communication device can avoid occupying additional time-frequency resources by instructing the use of reference signals other than SL-PRS for sidelink positioning measurement.

[0322] It should be understood that for the scenario where the device to be located is within the coverage of the network and the positioning measurement is initiated by the LMF, in addition to the LMF initiating the positioning measurement and performing positioning, and the anchor device determining the positioning measurement amount and reporting the measurement report as shown in Figure 8, the LMF can also initiate the positioning measurement and perform positioning, and the device to be located determines the positioning measurement amount and reports the measurement report. For example, the LMF initiates positioning measurement to three anchor devices, and the three anchor devices respectively obtain side link resources and respectively send first information and reference signals to the device to be located. When the device to be located determines that the bandwidth of the reference signal meets the minimum measurement bandwidth requirement, it performs side link positioning measurement, determines the measurement report, and sends the measurement report to the three anchor devices respectively. The three anchor devices forward the measurement report to the LMF, and the LMF jointly determines the position of the device to be located based on the measurement report and the positions of the three anchor devices. This application is not limited to this.

[0323] FIG9 is a schematic diagram of a sidelink positioning method 900 provided in an embodiment of the present application.

[0324] 910. The first communication device sends second information.

[0325] The second information is used to instruct the second communication device to perform sidelink positioning measurement based on the first channel, wherein the first channel is a symbol channel used to carry data signals, for example, a resource element (RE) carrying data signals.

[0326] The second information includes a minimum measurement bandwidth requirement, and the minimum measurement bandwidth requirement is used to indicate a minimum value of the bandwidth of the first channel.

[0327] It should be understood that the minimum measurement bandwidth requirement is used to indicate the minimum value of the bandwidth of the first channel, which can be understood as the minimum measurement bandwidth requirement is used to indicate the minimum value of the bandwidth of the data signal carried by the first channel.

[0328] It should be noted that the process of the first communication device sending the second information is similar to the process of 410. Please refer to the relevant description of 410. Here, in order to avoid redundancy, its detailed description is omitted.

[0329] 920. When the second communication device determines that the bandwidth of the first channel is greater than or equal to the minimum measurement bandwidth requirement, the second communication device performs sidelink positioning measurement based on the first channel.

[0330] Specifically, when the second communication device determines that the bandwidth of the first channel indicated by the first communication device is greater than or equal to the minimum measurement bandwidth requirement included in the second information received by the second communication device in 910, the second communication device performs side link positioning measurement based on the data signal transmitted (or carried) by the first channel.

[0331] It should be noted that the specific process of the second communication device performing side link positioning measurement based on the first channel can refer to the specific method of positioning measurement in the prior art, and this application is not limited to this.

[0332] 930. The second communication device sends a measurement report.

[0333] The measurement report is used to indicate the result of the sidelink positioning measurement.

[0334] Specifically, the measurement report includes the positioning measurement value and bandwidth information corresponding to the first channel.

[0335] The positioning measurement value is a measurement value obtained by the second communication device performing sidelink positioning measurement based on the first channel, and the positioning measurement value is used by the first communication device to determine the position of the first communication device.

[0336] The bandwidth information corresponding to the first channel is the bandwidth occupied by the first channel in the frequency domain.

[0337] Optionally, the measurement report further includes at least one of the following:

[0338] The antenna port number corresponding to the first channel, the measurement time, the third indication information, and the fourth indication information.

[0339] The third indication information is used to indicate whether the first channel is used in this positioning measurement.

[0340] The fourth indication information is used to indicate whether this positioning measurement uses a decoding data inverse encoding and modulation process to enhance the channel estimation of the data signal on the basis of using the first channel.

[0341] It should be noted that the positioning measurement amount, bandwidth information corresponding to the first channel, antenna port number corresponding to the first channel, and measurement time included in the above measurement report can be referred to the relevant description in 550. Here, in order to avoid repetition, its detailed description is omitted.

[0342] 940. The first communication device determines the location information of the device to be located according to the measurement report.

[0343] Specifically, after the first communication device receives the measurement report from the second communication device in 930 , the first communication device determines the location information of the device to be located according to the positioning measurement value included in the measurement report and the bandwidth information corresponding to the first channel.

[0344] It should be noted that, for the process in which the first communication device determines the location information of the device to be located according to the measurement report, reference may be made to the relevant description in 540 , and a detailed description thereof is omitted here to avoid redundancy.

[0345] Optionally, the method 900 further includes: 950, the first communications device sends a measurement time window.

[0346] The measurement time window is used to indicate the time for sidelink positioning measurement.

[0347] It should be understood that the present application does not limit the order of 910 and 950. For example, the first communication device may first send the second information and then send the measurement time window, that is, execute 910 first and then execute 950; or, the first communication device may first send the measurement time window and then send the second information, that is, execute 950 first and then execute 910; or, the first communication device may send the second information and the measurement time window at the same time, that is, execute 910 and 950 at the same time.

[0348] Optionally, when in the scenario of relative or absolute positioning initiated between user devices, the first communication device is the device to be positioned, the first communication device also needs to obtain side link resources and send data signals to the second communication device based on the first channel, and method 900 also includes 960-961.

[0349] 960. The first communication device obtains a sidelink resource.

[0350] The bandwidth corresponding to the sidelink resource is greater than or equal to the minimum measurement bandwidth requirement. It should be understood that the sidelink resource meeting the minimum measurement bandwidth requirement can be understood as the first communication device obtaining the sidelink resource needs to meet the minimum measurement bandwidth requirement while meeting the communication requirements.

[0351] In one possible implementation, the first communication device obtains sidelink resources through mode 1 or mode 2.

[0352] It should be noted that the first communication device may obtain side link resources through mode 1 or mode 2 by referring to the specific method of obtaining side link resources in the prior art, and this application does not limit this.

[0353] 961. The first communication device sends a data signal on a first channel based on a sidelink resource. Specifically, after acquiring a sidelink resource that meets the minimum measurement bandwidth requirement, the first communication device sends a data signal on the first channel to the second communication device based on the sidelink resource.

[0354] Optionally, when the device to be located is within the network coverage and the positioning measurement is initiated by LMF, that is, when the first communication device is LMF, the device to be located also needs to obtain side link resources and send data signals to the second communication device on the first channel. Method 900 also includes 970-971.

[0355] 970. The device to be located obtains sidelink resources.

[0356] The bandwidth corresponding to the sidelink resource is greater than or equal to the minimum measurement bandwidth requirement. It should be understood that the sidelink resource meeting the minimum measurement bandwidth requirement can be understood as the first communication device obtaining the sidelink resource needs to meet the minimum measurement bandwidth requirement while meeting the communication requirements.

[0357] In a possible implementation manner, the device to be located obtains sidelink resources through mode 1 or mode 2.

[0358] 971. The device to be located sends a data signal on a first channel based on a sidelink resource. Specifically, after acquiring a sidelink resource that meets the minimum measurement bandwidth requirement, the device to be located sends a data signal on the first channel to the second communication device based on the sidelink resource.

[0359] It should be noted that when the above-mentioned method 900 is applied to the scenario of relative or absolute positioning initiated between user devices (devices to be positioned), reference can be made to the information interaction process between the device to be positioned (corresponding to the first communication device in method 900) and the anchor device (corresponding to the second communication device in method 900) in Figure 5; when the above-mentioned method 900 is applied to the scenario where the device to be positioned is within the network coverage and the positioning measurement is initiated by the LMF, reference can be made to the information interaction process between the LMF (corresponding to the first communication device in method 900), the anchor device (corresponding to the second communication device in method 900) and the device to be positioned in Figure 8, which will not be described in detail here.

[0360] In the above scheme, by indicating the minimum measurement bandwidth for sidelink positioning measurement during sidelink positioning measurement, the minimum measurement accuracy is further limited (the bandwidth is positively correlated with the positioning measurement accuracy), thereby improving the positioning measurement accuracy. On the other hand, by indicating the minimum measurement bandwidth, invalid positioning measurements can be reduced and power consumption can be reduced. At the same time, by indicating the use of symbol channels carrying data signals (rather than sidelink positioning measurement reference signals) for sidelink positioning measurements, more time domain channels are used for positioning measurements, which can improve the accuracy of positioning measurements and reduce positioning estimation errors caused by non-ideal factors (for example, by measuring through channel estimation of multiple symbols, the Doppler frequency deviation caused by device movement can be estimated, thereby improving positioning measurement accuracy).

[0361] It should be understood that the examples in Figures 4 to 9 of the embodiments of the present application are merely intended to facilitate understanding of the embodiments of the present application by those skilled in the art, and are not intended to limit the embodiments of the present application to the specific scenarios illustrated. Those skilled in the art can obviously make various equivalent modifications or variations based on the examples in Figures 4 to 9, and such modifications or variations also fall within the scope of the embodiments of the present application.

[0362] It can also be understood that some optional features in the various embodiments of the present application may not depend on other features in certain scenarios, and may also be combined with other features in certain scenarios, without limitation.

[0363] It can also be understood that the solutions in the various embodiments of the present application can be reasonably combined and used, and the explanations or descriptions of the various terms appearing in the embodiments can be referenced or explained with each other in the various embodiments, without limitation to this.

[0364] It can also be understood that the sizes of the various numerical serial numbers in the embodiments of the present application do not mean the order of execution, but are only distinguished for the convenience of description and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0365] It can also be understood that in the various embodiments of the present application, some message names are involved, such as first information or second information, etc. It should be understood that their naming does not limit the scope of protection of the embodiments of the present application.

[0366] It should also be understood that the term "and / or" in this document simply describes an association relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0367] It can also be understood that in the above-mentioned various method embodiments, the methods and operations implemented by the first communication device can also be implemented by components that can be used by the first communication device (such as chips or circuits); in addition, the methods and operations implemented by the second communication device can also be implemented by components that can be used by the second communication device (such as chips or circuits), without limitation. Corresponding to the methods given in the above-mentioned various method embodiments, the embodiments of the present application also provide corresponding devices, which include modules for executing the corresponding embodiments of the above-mentioned various methods. The module can be software, hardware, or a combination of software and hardware. It can be understood that the technical features described in the above-mentioned various method embodiments are also applicable to the following device embodiments.

[0368] It should be understood that the first communication device and the second communication device may perform some or all of the steps in the above embodiments. These steps or operations are merely examples, and the embodiments of the present application may also perform other operations or variations of various operations. In addition, the various steps may be performed in a different order than those presented in the above embodiments, and it is possible that not all of the operations in the above embodiments need to be performed.

[0369] The sidelink positioning method provided in the embodiment of the present application is described in detail above in conjunction with Figures 4-9. The communication device provided in the embodiment of the present application is described in detail below in conjunction with Figures 10-12. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment. Therefore, for matters not described in detail, reference can be made to the method embodiment above. For the sake of brevity, some contents are not repeated here.

[0370] Figure 10 is a schematic block diagram of a communication device provided in an embodiment of the present application. The device 1000 includes a transceiver unit 1010 and a processing unit 1020. The transceiver unit 1010 can be used to implement corresponding communication functions. The processing unit 1020 can be used to process data. In other words, the transceiver unit 1010 is used to perform operations related to receiving and sending, and the processing unit 1020 is used to perform other operations besides receiving and sending. The transceiver unit 1010 can also be referred to as a communication interface or a communication unit.

[0371] Optionally, the device 1000 also includes a storage unit, which can be used to store instructions and / or data, and the processing unit 1020 can read the instructions and / or data in the storage unit so that the device implements the actions of different devices in the aforementioned method embodiments, for example, the actions of the first communication device or the second communication device.

[0372] The device 1000 can be used to execute the actions performed by the first communication device or the second communication device in the above method embodiments. In this case, the device 1000 can be the first communication device or the second communication device, or a component of the first communication device or the second communication device. The transceiver unit 1010 is used to execute the transceiver-related operations of the first communication device or the second communication device in the above method embodiments, and the processing unit 1020 is used to execute the processing-related operations of the first communication device or the second communication device in the above method embodiments.

[0373] In a possible implementation, the transceiver unit 1010 is configured to send the first information and further to receive a measurement report.

[0374] In another possible implementation, the processing unit 1020 is configured to receive the first information, perform sidelink positioning measurement based on the reference signal, and send a measurement report.

[0375] It should also be understood that the device 1000 here is embodied in the form of a functional unit. The term "unit" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a merging logic circuit and / or other suitable components that support the described functions. In an optional example, those skilled in the art will understand that the device 1000 can be specifically the first communication device or the second communication device in the above-mentioned embodiment, and can be used to execute the various processes and / or steps corresponding to the first communication device or the second communication device in the above-mentioned method embodiments, or the device 1000 can be specifically the first communication device or the second communication device in the above-mentioned embodiment, and can be used to execute the various processes and / or steps corresponding to the first communication device or the second communication device in the above-mentioned method embodiments. To avoid repetition, it will not be repeated here.

[0376] The apparatus 1000 of each of the above-mentioned solutions has the function of implementing the corresponding steps performed by the first communication device or the second communication device in the above-mentioned method, or the apparatus 1000 of each of the above-mentioned solutions has the function of implementing the corresponding steps performed by the first communication device or the second communication device in the above-mentioned method. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the transceiver unit can be replaced by a transceiver (for example, the sending unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor to respectively perform the sending and receiving operations and related processing operations in each method embodiment.

[0377] In addition, the transceiver unit 1010 may also be a transceiver circuit (for example, may include a receiving circuit and a sending circuit), and the processing unit may be a processing circuit.

[0378] It should be noted that the apparatus in FIG10 may be a network element or device in the aforementioned embodiment, or may be a chip or chip system, such as a system on chip (SoC). The transceiver unit may be an input / output circuit or a communication interface; the processing unit may be a processor, microprocessor, or integrated circuit integrated on the chip. This is not limited here.

[0379] As shown in Figure 11, an embodiment of the present application provides another communication device 1100. The device 1100 includes a processor 1110, which is coupled to a memory 1120. The memory 1120 is used to store computer programs or instructions and / or data. The processor 1110 is used to execute the computer programs or instructions stored in the memory 1120, or read the data stored in the memory 1120 to perform the methods in the above method embodiments. The device 1100 also includes a transceiver 1130, which is used to receive and / or transmit signals. For example, the processor 1110 is used to control the transceiver 1130 to receive and / or transmit signals.

[0380] Optionally, there are one or more processors 1110 .

[0381] Optionally, there are one or more memories 1120 .

[0382] Optionally, the memory 1120 is integrated with the processor 1110 or provided separately.

[0383] As a solution, the apparatus 1100 is used to implement the operations performed by the first communication device or the second communication device in the above various method embodiments.

[0384] For example, the processor 1110 is configured to execute a computer program or instruction stored in the memory 1120 to implement the relevant operations of the first communication device in each of the above method embodiments. For example, the first communication device in any one of the embodiments shown in Figures 4, 5, 8, and 9, or the method of the first communication device in any one of the embodiments shown in Figures 4, 5, 8, and 9.

[0385] For example, the processor 1110 is configured to execute a computer program or instruction stored in the memory 1120 to implement the relevant operations of the second communication device in each of the above method embodiments. For example, the second communication device in any one of the embodiments shown in Figures 4, 5, 8, and 9, or the method of the second communication device in any one of the embodiments shown in Figures 4, 5, 8, and 9.

[0386] It should be understood that the processor mentioned in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0387] It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory and / or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM). For example, RAM can be used as an external cache. By way of example and not limitation, RAM includes the following forms: static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0388] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) can be integrated into the processor.

[0389] It should also be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0390] As shown in FIG12 , an embodiment of the present application provides a chip system 1200 . The chip system 1200 (or also referred to as a processing system) includes a logic circuit 1210 and an input / output interface 1220 .

[0391] Logic circuit 1210 may be a processing circuit within chip system 1200. Logic circuit 1210 may be coupled to a storage unit and invoke instructions within the storage unit, enabling chip system 1200 to implement the methods and functions of various embodiments of the present application. Input / output interface 1220 may be an input / output circuit within chip system 1200, outputting information processed by chip system 1200 or inputting data or signaling information to be processed into chip system 1200 for processing.

[0392] As a solution, the chip system 1200 is used to implement the operations performed by the first communication device or the second communication device in the above various method embodiments.

[0393] For example, the logic circuit 1210 is used to implement the processing-related operations performed by the first communication device in the above method embodiments, such as the processing-related operations performed by the first communication device in the embodiments shown in any one of Figures 4, 5, 8, and 9; the input / output interface 1220 is used to implement the sending and / or receiving-related operations performed by the first communication device in the above method embodiments, such as the sending and / or receiving-related operations performed by the first communication device in the embodiments shown in any one of Figures 4, 5, 8, and 9.

[0394] For example, the logic circuit 1210 is used to implement the processing-related operations performed by the second communication device in the above method embodiments, such as the processing-related operations performed by the second communication device in the embodiments shown in any one of Figures 4, 8, and 9; the input / output interface 1220 is used to implement the sending and / or receiving-related operations performed by the second communication device in the above method embodiments, such as the sending and / or receiving-related operations performed by the second communication device in the embodiments shown in any one of Figures 4, 5, 8, and 9.

[0395] An embodiment of the present application further provides a computer-readable storage medium storing computer instructions for implementing the methods executed by the first communication device or the second communication device in the above-mentioned method embodiments.

[0396] For example, when the computer program is executed by a computer, the computer can implement the method performed by the first communication device or the second communication device in each embodiment of the above method.

[0397] An embodiment of the present application further provides a computer program product comprising instructions, which, when executed by a computer, implement the methods performed by the first communication device or the second communication device in the above-mentioned method embodiments.

[0398] The explanation of the relevant contents and beneficial effects of any of the above-mentioned devices can be referred to the corresponding method embodiments provided above, which will not be repeated here.

[0399] As used in this specification, the terms "component," "module," "system," and the like are used to represent computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or a computer. By way of illustration, both an application running on a computing device and a computing device can be a component. One or more components can reside in a process and / or an execution thread, and a component can be located on a computer and / or distributed between two or more computers. In addition, these components can be executed from various computer-readable media having various data structures stored thereon. Components can communicate, for example, via local and / or remote processes based on signals having one or more data packets (e.g., data from two components interacting with another component on a local system, a distributed system, and / or a network, such as the Internet interacting with other systems via signals).

[0400] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0401] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0402] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0403] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0404] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0405] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0406] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A sidelink positioning method, characterized in that: include: The first communication device sends first information, where the first information is used to instruct the second communication device to perform sidelink positioning measurement based on a reference signal, and the first information includes a minimum measurement bandwidth requirement, where the minimum measurement bandwidth requirement is used to indicate a minimum value of a bandwidth of the reference signal; The first communication device receives a measurement report, where the measurement report is obtained by performing the sidelink positioning measurement based on the reference signal, and the measurement report includes bandwidth information corresponding to the reference signal, where the bandwidth information is an actual bandwidth of the reference signal, and the actual bandwidth of the reference signal is greater than or equal to the minimum measurement bandwidth requirement.

2. The method according to claim 1, characterized in that The reference signal includes at least one of the following: Physical layer sidelink shared channel demodulation reference signal PSSCH DMRS, physical layer sidelink control channel demodulation reference signal PSCCH DMRS, physical layer sidelink broadcast channel demodulation reference signal PSBCH DMRS, sidelink channel state information reference signal SL CSI-RS, sidelink phase tracking reference signal SL PT-RS.

3. The method according to claim 1 or 2, characterized in that: The measurement report also includes at least one of the following: The antenna port number corresponding to the reference signal, the measurement time, and the position of the time-frequency resources corresponding to the reference signal, wherein the measurement time is used to indicate the time when the second communication device performs the sidelink positioning measurement.

4. The method according to any one of claims 1 to 3, characterized in that When the first communication device is a device to be located, the method further includes: The first communication device acquires a sidelink resource, where a bandwidth corresponding to the sidelink resource is greater than or equal to the minimum measurement bandwidth requirement; The first communications device transmits the reference signal on the sidelink resources.

5. The method according to any one of claims 1 to 4, characterized in that The method further comprises: The first communication device determines the location information of the device to be located according to the measurement report.

6. A sidelink positioning method, characterized in that: include: The second communication device receives first information, where the first information is used to instruct the second communication device to perform sidelink positioning measurement based on a reference signal, and the first information includes a minimum measurement bandwidth requirement, where the minimum measurement bandwidth requirement is used to indicate a minimum value of a bandwidth of the reference signal; When the second communication device determines that the bandwidth of the reference signal is greater than or equal to the minimum measurement bandwidth requirement, the second communication device performs the sidelink positioning measurement based on the reference signal; The second communication device sends a measurement report, where the measurement report is obtained by performing the sidelink positioning measurement based on the reference signal, and the measurement report includes bandwidth information corresponding to the reference signal, where the bandwidth information is an actual bandwidth of the reference signal.

7. The method according to claim 6, characterized in that The reference signal includes at least one of the following: Physical layer sidelink shared channel demodulation reference signal PSSCH DMRS, physical layer sidelink control channel demodulation reference signal PSCCH DMRS, physical layer sidelink broadcast channel demodulation reference signal PSBCH DMRS, sidelink channel state information reference signal SL CSI-RS, sidelink phase tracking reference signal SL PT-RS.

8. The method according to claim 6 or 7, characterized in that: The measurement report also includes at least one of the following: The antenna port number corresponding to the reference signal, the measurement time, and the position of the time-frequency resources corresponding to the reference signal, wherein the measurement time is used to indicate the time when the second communication device performs the sidelink positioning measurement.

9. The method according to any one of claims 6 to 8, characterized in that The second communication device receives the first information, including: The second communication device receives the first information from the device to be located; The method further comprises: The second communication device receives the reference signal from the device to be positioned on a sidelink resource, and a bandwidth corresponding to the sidelink resource is greater than or equal to the minimum measurement bandwidth requirement.

10. The method according to any one of claims 6 to 8, characterized in that The second communication device receives the first information, including: The second communication device receives the first information from the location management function network element LMF; The second communication device sends the first information to the device to be located.

11. The method according to claim 10, characterized in that The method further comprises: The second communication device receives the reference signal from the device to be located on a sidelink resource, where a bandwidth corresponding to the sidelink resource is greater than or equal to the minimum measurement bandwidth requirement; The second communication device sending a measurement report includes: The second communication device sends the measurement report to the LMF.

12. A sidelink positioning method, characterized in that: include: The device to be positioned receives first information from a second communication device, where the first information is used to instruct the second communication device to perform a sidelink positioning measurement based on a reference signal, and the first information includes a minimum measurement bandwidth requirement, where the minimum measurement bandwidth requirement is used to indicate a minimum value of a bandwidth of the reference signal; The device to be located acquires a side link resource, where a bandwidth corresponding to the side link resource is greater than or equal to the minimum measurement bandwidth requirement; The device to be positioned sends a reference signal to the second communication device on the sidelink resource.

13. A sidelink positioning method, characterized in that: include: The first communication device sends second information, where the second information is used to instruct the second communication device to perform sidelink positioning measurement based on a first channel, where the first channel is a symbol channel used to carry data signals, and the second information includes a minimum measurement bandwidth requirement, where the minimum measurement bandwidth requirement is used to indicate a minimum value of a bandwidth of the first channel; The first communication device receives a measurement report, where the measurement report is used to indicate a result of a sidelink positioning measurement, and the measurement report includes a positioning measurement amount and bandwidth information corresponding to the first channel; The first communication device determines the location information of the device to be located according to the measurement report.

14. The method according to claim 13, characterized in that The method further comprises: The first communication device sends a measurement time window, where the measurement time window is used to indicate a time for sidelink positioning measurement.

15. The method according to claim 13 or 14, characterized in that The first communication device is a device to be located, and the method further includes: The first communication device acquires a sidelink resource, where a bandwidth corresponding to the sidelink resource is greater than or equal to the minimum measurement bandwidth requirement; The first communication device transmits a data signal on the first channel based on the sidelink resource.

16. A sidelink positioning method, characterized in that: include: The second communication device receives second information, where the second information is used to instruct the second communication device to perform sidelink positioning measurement based on a first channel, where the first channel is a symbol channel used to carry data signals, and the second information includes a minimum measurement bandwidth requirement, where the minimum measurement bandwidth requirement is used to indicate a minimum value of a bandwidth of the first channel; When the second communication device determines that the bandwidth of the first channel is greater than or equal to the minimum measurement bandwidth requirement, the second communication device performs sidelink positioning measurements based on the first channel; The second communication device sends a measurement report, where the measurement report is used to indicate a result of a sidelink positioning measurement, and the measurement report includes a positioning measurement value and bandwidth information corresponding to the first channel.

17. The method according to claim 16, characterized in that The method further comprises: The second communication device receives a measurement time window, where the measurement time window is used to indicate a time for sidelink positioning measurement.

18. The method according to claim 16 or 17, characterized in that The second communication device receiving the second information includes: The second communication device receives second information from the device to be located; The method further comprises: The second communication device receives the data signal from the device to be located on the first channel based on a side link resource, and a bandwidth corresponding to the side link resource is greater than or equal to the minimum measurement bandwidth requirement.

19. The method according to any one of claims 16 to 18, characterized in that The second communication device sending a measurement report includes: The second communication device sends the measurement report to the device to be located.

20. The method according to any one of claims 16 to 19, characterized in that The second communication device receives second information, including: The second communication device receives the second information from the positioning management function network element LMF; The method further comprises: The second communication device sends the second information to the device to be located.

21. The method according to any one of claims 16 to 20, characterized in that The method further comprises: The second communication device receives the data signal from the device to be located on the first channel based on the sidelink resource, and the bandwidth corresponding to the sidelink resource in Siping City is greater than or equal to the minimum measurement bandwidth requirement; The second communication device sending a measurement report includes: The second communication device sends the measurement report to the LMF.

22. A sidelink positioning method, characterized in that: include: The device to be positioned receives second information from a second communication device, where the second information is used to instruct the second communication device to perform sidelink positioning measurement based on a first channel, where the second communication device is a device with known position information, and the first channel is a symbol channel for carrying data signals, and the second information includes a minimum measurement bandwidth requirement, where the minimum measurement bandwidth requirement is used to indicate a minimum value of a bandwidth of the first channel; The device to be located acquires a side link resource, where a bandwidth corresponding to the side link resource is greater than or equal to the minimum measurement bandwidth requirement; The device to be located sends a data signal to the second communication device on the first channel based on the sidelink resource.

23. A communication system, characterized in that: The method comprises a first communication device and a second communication device, wherein the first communication device is used to execute the method as claimed in any one of claims 1 to 5, or to execute the method as claimed in any one of claims 13 to 15, and the second communication device is used to execute the method as claimed in any one of claims 6 to 11, or to execute the method as claimed in any one of claims 16 to 21.

24. The communication system according to claim 23, characterized in that It also includes a device to be located, wherein the device to be located is used to execute the method as claimed in claim 12 or 22.

25. A communication device, characterized in that: include: A processor, configured to execute a computer program stored in a memory so that the communication device executes the method according to any one of claims 1 to 22.

26. A computer-readable storage medium, characterized in that: A computer program or instruction is stored thereon, wherein when the computer program or instruction is executed by a processor, the method as claimed in any one of claims 1 to 22 is executed.

27. A computer program product comprising instructions which, when executed on a computer, cause the method as claimed in any one of claims 1 to 22 to be performed.

28. A chip system, characterized in that: include: A processor, used to call and run a computer program or instruction from a memory so that a communication device equipped with the chip system implements the method as described in any one of claims 1 to 22.

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