Lateral link positioning method and communication device

Abstract

Provided in an embodiment of the present application are a sidelink positioning method and a communication device, the method comprising: a first communication device sending first information, the first information being used for instructing a second communication device to perform sidelink positioning measurement based on a reference signal, the first information comprising a minimum measurement bandwidth requirement, the minimum measurement bandwidth requirement is used for indicating 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 comprises 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. Therefore, the minimum measurement precision is further limited by indicating the minimum measurement bandwidth of the positioning measurement during the positioning measurement of the sidelink, so that the positioning measurement precision can be improved.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of wireless communication technologies, and more specifically, to a sidelink positioning method and a communication device. Background Art

[0002] Positioning is an important function in mobile communication systems, requiring the system to provide users' location information in real time. For the sidelink scenario, the sidelink positioning reference signal (SL-PRS) is currently introduced. The transmitting device sends the SL-RPS signal, and the receiving device performs positioning measurement 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 where the physical layer sidelink shared channel (PSSCH) is located (where SL-PRS enjoys 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 measurement can be performed without sending SL-PRS, thereby achieving the purpose of reducing resource overhead. When using the existing signals of the sidelink for positioning measurement, how to ensure positioning accuracy is a hot topic of research. Summary of the invention

[0003] 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.

[0004] In a first aspect, a sidelink positioning method is provided. The method may be performed by a first communication device, or may be performed by a component (such as a chip or circuit) of the first communication device, without limitation. For ease of description, the method is described below by taking the first communication device as an example.

[0005] 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.

[0006] In the above scheme, the first communication device further limits the minimum measurement accuracy (the bandwidth is positively correlated with the positioning measurement accuracy) by indicating the minimum measurement bandwidth of the sidelink positioning measurement of the second communication device 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.

[0007] At the same time, 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 bandwidth information corresponding to multiple measurement signals is reported, the first communication device can select the positioning measurement amount with a larger positioning measurement bandwidth for positioning, thereby further improving the positioning measurement accuracy.

[0008] In a possible implementation manner, the first communication device is a device to be located, an anchor device, or a location management function (LMF).

[0009] 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 may be the device to be positioned or the anchor device; when the device to be positioned (or the target device) is within the coverage of the network, the first communication device that initiates positioning measurement and performs positioning may be the LMF.

[0010] 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.

[0011] 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-frequency resources and can effectively improve resource utilization.

[0012] In a possible implementation manner, the method further includes: the first communication device sends a measurement time window, where the measurement time window is used to indicate a time for a sidelink positioning measurement.

[0013] 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.

[0014] In one possible implementation, the measurement report also includes at least one of the following: an antenna port number corresponding to the reference signal, a measurement time, and a location of time-frequency resources corresponding to the reference signal, wherein the measurement time is used to indicate the time when the second communication device performs side link positioning measurement.

[0015] 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 according to the antenna port number, thereby determining the position of the device to be located. When the measurement report received by the first communication device includes the measurement time, the first communication device can determine the time for 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 received by the first 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 according to the position of the time-frequency resources corresponding to the reference signal.

[0016] In one possible implementation, when the first communication device is a device to be located, the method further includes: the first communication device acquires a side link resource, the bandwidth corresponding to the side link resource is greater than or equal to the minimum measurement bandwidth requirement; and the first communication device sends a reference signal on the side link resource.

[0017] 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 a device to be positioned or an 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.

[0018] In a possible implementation manner, the first communications device determines the location information of the device to be located according to the measurement report.

[0019] 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.

[0020] In a second aspect, a sidelink positioning method is provided. The method may be executed by a second communication device, or may be executed by a component (such as a chip or circuit) of the second communication device, without limitation. For ease of description, the method is described below by taking the second communication device as an example.

[0021] The method may include: a 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, and the measurement report includes bandwidth information corresponding to the reference signal, and the bandwidth information is the actual bandwidth of the reference signal.

[0022] In the above scheme, the first communication device indicates the minimum measurement bandwidth of the positioning measurement during the sidelink positioning measurement, so that the second communication device performs the positioning measurement only when the bandwidth of the reference signal is greater than or equal to the minimum measurement bandwidth requirement, which further limits the minimum measurement accuracy (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.

[0023] 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 bandwidth information corresponding to multiple measurement signals, the first communication device can select a positioning measurement amount with a larger positioning measurement bandwidth for positioning, thereby 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 measurements.

[0024] In a possible implementation manner, the second communication device is a device to be located or an anchor device.

[0025] 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.

[0026] In the above scheme, by using data demodulation reference signals (for example, PSSCH DMRS, PSCCH DMRS, PSBCHDMRS, etc.) or channel detection 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 and frequency resources and can effectively improve resource utilization.

[0027] 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 a sidelink positioning measurement.

[0028] In the above scheme, the second communication device can avoid invalid measurements caused by additional (or unrequired) positioning measurements at other times by performing side link positioning measurements within the time indicated by the first communication device, thereby reducing power consumption.

[0029] In one possible implementation, the measurement report also includes at least one of the following: an antenna port number corresponding to the reference signal, a measurement time, and a location of time-frequency resources corresponding to the reference signal, wherein the measurement time is used to indicate the time when the second communication device performs side link positioning measurement.

[0030] In the above scheme, when the second communication device receives multiple reference signals sent from the first communication device through multiple antenna ports, the antenna port number corresponding to the reference signal for positioning measurement is reported in the measurement report reported by the second communication device, so that the first communication device can determine the position of the device to be located according to 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 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 according to the position of the time-frequency resources corresponding to the reference signal.

[0031] 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 side link resource, and the bandwidth corresponding to the side link resource is greater than or equal to the minimum measurement bandwidth requirement.

[0032] 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 by the first communication device on the side link resources that meet the minimum measurement bandwidth requirements, so that the second device can successfully perform positioning measurement.

[0033] In a possible implementation manner, the second communication device sends a measurement report, including: the second communication device sends a measurement report to the device to be located.

[0034] In a possible implementation manner, the second communication device receives the first information, including: the second communication device receives the first information from a positioning management function network element LMF; and the second communication device sends the first information to the device to be located.

[0035] 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.

[0036] In a possible implementation manner, 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.

[0037] 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 the positioning measurement and performs positioning is LMF, the second communication device receives the reference signal sent by the first communication device on the side link 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 LMF, so that LMF determines the position of the device to be located according to the measurement report.

[0038] In a third aspect, a sidelink positioning method is provided. The method may be executed by a device to be positioned, or may be executed by a component (such as a chip or circuit) of the device to be positioned, without limitation. For ease of description, the method is described below by taking the method executed by the device to be positioned as an example.

[0039] 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.

[0040] 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 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.

[0041] In a fourth aspect, a sidelink positioning method is provided. The method may be performed by a first communication device, or may be performed by a component (such as a chip or circuit) of the first communication device, without limitation. For ease of description, the method is described below by taking the first communication device as an example.

[0042] 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.

[0043] In the above scheme, the first communication device indicates the minimum measurement bandwidth of the sidelink positioning measurement performed by the second communication device based on the first channel during the sidelink positioning measurement, that is, when the data signal received by the second communication device through the first channel meets the minimum measurement bandwidth, the second communication device performs the sidelink positioning measurement based on the data signal, which further limits the minimum measurement accuracy (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.

[0044] At the same time, the first communication device instructs to use the symbol channel carrying the data signal (rather than the sidelink positioning measurement reference signal) to perform sidelink positioning measurement. In this way, more time domain channels are used for positioning measurement, which can improve the accuracy of positioning measurement and reduce the positioning estimation error 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 the accuracy of positioning measurement). 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 the positioning accuracy.

[0045] 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.

[0046] 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 may be the device to be positioned or the anchor device; when the device to be positioned (or the target device) is within the coverage of the network, the first communication device that initiates positioning measurement and performs positioning may be the LMF.

[0047] In a possible implementation manner, the method further includes: the first communication device sends a measurement time window, where the measurement time window is used to indicate a time for a sidelink positioning measurement.

[0048] In the above solution, the first communication device can avoid wasting resources due to performing additional (or unrequired) positioning measurements at other times by indicating the time to perform sidelink positioning measurements.

[0049] In one possible implementation, the measurement report also includes at least one of the following: an antenna port number corresponding to the first channel, a measurement time, third indication information, and fourth indication information; wherein the measurement time is used to indicate the time for the second communication device to perform a side link positioning measurement, the third indication information is used to indicate whether to perform a side link positioning measurement based on the first channel, and the fourth indication information is used to indicate whether to use the decoded data inverse encoding and modulation process to enhance the channel estimation of the data signal when performing the side link positioning measurement based on the first channel.

[0050] 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 according to 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 side link 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.

[0051] In one possible implementation, when the first communication device is a device to be located, the method further includes: the first communication device acquires a side link resource, and the bandwidth corresponding to the side link resource is greater than or equal to the minimum measurement bandwidth requirement; and the first communication device sends a data signal on a first channel based on the side link resource.

[0052] 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.

[0053] In a fifth aspect, a sidelink positioning method is provided. The method may be executed by a first communication device, or may be executed by a component (such as a chip or circuit) of the first communication device, without limitation. For ease of description, the method is described below by taking the first communication device as an example.

[0054] 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.

[0055] In the above scheme, the first communication device indicates the minimum measurement bandwidth of the positioning measurement during the sidelink positioning measurement, so that the second communication device performs the positioning measurement only when the bandwidth of the data signal transmitted by the first channel is greater than or equal to the minimum measurement bandwidth requirement, thereby further limiting the minimum measurement accuracy (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.

[0056] At the same time, the first communication device instructs to use the symbol channel carrying the data signal (rather than the sidelink positioning measurement reference signal) to perform sidelink positioning measurement. In this way, more time domain channels are used for positioning measurement, which can improve the accuracy of positioning measurement and reduce the positioning estimation error 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 the accuracy of positioning measurement). 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 the positioning accuracy.

[0057] 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 a sidelink positioning measurement.

[0058] 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.

[0059] In one possible implementation, the measurement report also includes at least one of the following: an antenna port number corresponding to the first channel, a measurement time, third indication information, and fourth indication information; wherein the measurement time is used to indicate the time for the second communication device to perform a side link positioning measurement, the third indication information is used to indicate whether to perform a side link positioning measurement based on the first channel, and the fourth indication information is used to indicate whether to use a decoded data inverse encoding and modulation process to enhance the channel estimation of the data signal when performing the side link positioning measurement based on the first channel.

[0060] 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 located according to 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 sidelink positioning measurement based on the first channel 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 third indication information and the fourth indication information, the positioning accuracy is further improved by indicating whether the second communication device uses 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.

[0061] 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 side link resources, and the bandwidth corresponding to the side link resources is greater than or equal to the minimum measurement bandwidth requirement.

[0062] 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 a device to be positioned or an anchor device, the second communication device receives a data signal sent by the first communication device on a first channel based on a 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 requirement.

[0063] In a possible implementation manner, the second communication device sends a measurement report, including: the second communication device sends a measurement report to the device to be located.

[0064] In a possible implementation manner, the second communication device receives the second information, including: the second communication device receives the second information from the positioning management function network element LMF; the second communication device sends the second information to the device to be located.

[0065] In the above scheme, when the device to be located (or the target device) is in the scenario where 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 the 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.

[0066] In a possible implementation, the method also includes: the second communication device receives a data signal from the device to be located on the 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.

[0067] 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 LMF, 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 quantity 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 LMF, so that LMF determines the position of the device to be located based on the measurement report.

[0068] In a sixth aspect, a sidelink positioning method is provided. The method can be executed by a device to be positioned, or can also be executed by a component (such as a chip or circuit) of the device to be positioned, without limitation. For ease of description, the method is described below by taking the method executed by the device to be positioned as an example.

[0069] 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.

[0070] 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 the positioning is LMF, the device to be located obtains the side link resources that meet the minimum measurement bandwidth requirements 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.

[0071] 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.

[0072] The communication device comprises:

[0073] The transceiver unit is used to send first information, where the first information is used to instruct the second 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; the transceiver unit is also used to receive 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, and the actual bandwidth of the reference signal is greater than or equal to the minimum measurement bandwidth requirement.

[0074] In a possible implementation manner, the communication device is a device to be located or a location management function (LMF).

[0075] 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.

[0076] 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 the time for the sidelink positioning measurement.

[0077] In one possible implementation, the measurement report also includes at least one of the following: an antenna port number corresponding to the reference signal, a measurement time, and a location of time-frequency resources corresponding to the reference signal, wherein the measurement time is used to indicate the time when the second communication device performs side link positioning measurement.

[0078] 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.

[0079] In a possible implementation manner, a processing unit is configured to determine location information of the device to be located according to a measurement report.

[0080] 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.

[0081] In an 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.

[0082] The communication device comprises:

[0083] The transceiver unit is used to receive first information, the first information is used to instruct the communication device to perform sidelink positioning measurement based on the 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 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, 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, and the bandwidth information is the actual bandwidth of the reference signal.

[0084] 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.

[0085] 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 a sidelink positioning measurement.

[0086] In one possible implementation, the measurement report also includes at least one of the following: an antenna port number corresponding to the reference signal, a measurement time, and a location of time-frequency resources corresponding to the reference signal, wherein the measurement time is used to indicate the time when the second communication device performs side link positioning measurement.

[0087] In a possible implementation manner, 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 side link resource, and the bandwidth corresponding to the side link resource is greater than or equal to the minimum measurement bandwidth requirement.

[0088] In a possible implementation manner, the transceiver unit is further configured to send a measurement report to the device to be located.

[0089] In a possible implementation manner, the transceiver unit is further configured to receive first information from a positioning management function network element LMF; and the second communication device sends the first information to the device to be located.

[0090] In a possible implementation manner, the transceiver unit is further used to receive 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; and send a measurement report to the LMF.

[0091] The explanation and beneficial effects of the communication device-related contents provided in the eighth aspect can be referred to the method shown in the second aspect and will not be repeated here.

[0092] In a 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 arranged in the device to be located. This application does not limit this.

[0093] The communication device comprises:

[0094] 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, 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; 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 also used to send a reference signal to the second communication device on the sidelink resource.

[0095] 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.

[0096] 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.

[0097] The communication device comprises:

[0098] 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, where the minimum measurement bandwidth requirement 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; and the processing unit is used to determine the location information of the device to be located according to the measurement report.

[0099] In a possible implementation manner, the communication device is a device to be located or a location management function network element LMF.

[0100] 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 the time for the sidelink positioning measurement.

[0101] In one possible implementation, the measurement report also includes at least one of the following: an antenna port number corresponding to the first channel, a measurement time, third indication information, and fourth indication information; wherein the measurement time is used to indicate the time for the second communication device to perform a side link positioning measurement, the third indication information is used to indicate whether to perform a side link positioning measurement based on the first channel, and the fourth indication information is used to indicate whether to use the decoded data inverse encoding and modulation process to enhance the channel estimation of the data signal when performing the side link positioning measurement based on the first channel.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] The communication device comprises:

[0106] 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 used to indicate a result of the sidelink positioning measurement, and the measurement report includes a positioning measurement amount and bandwidth information corresponding to the first channel.

[0107] 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 a sidelink positioning measurement.

[0108] In one possible implementation, the measurement report also includes at least one of the following: an antenna port number corresponding to the first channel, a measurement time, third indication information, and fourth indication information; wherein the measurement time is used to indicate the time for the second communication device to perform a side link positioning measurement, the third indication information is used to indicate whether to perform a side link positioning measurement based on the first channel, and the fourth indication information is used to indicate whether to use a decoded data inverse encoding and modulation process to enhance the channel estimation of the data signal when performing the side link positioning measurement based on the first channel.

[0109] 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.

[0110] In a possible implementation manner, the transceiver unit is further configured to send a measurement report to the device to be located.

[0111] In a possible implementation manner, the transceiver unit is further used to receive second information from the positioning management function network element LMF; the transceiver unit is further used to send the second information to the device to be located.

[0112] In a possible implementation, the transceiver unit is also 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.

[0113] 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.

[0114] 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 arranged in the device to be located. The present application does not limit this.

[0115] The communication device comprises:

[0116] The transceiver unit is used to receive 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 the 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, and 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 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.

[0117] The explanation and beneficial effects of the communication device-related contents provided in the twelfth aspect may refer to the method shown in the sixth aspect and will not be repeated here.

[0118] In a thirteenth aspect, a communication device is provided, comprising: 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 in the first to sixth aspects above.

[0119] In one implementation, the apparatus is a first communication device.

[0120] In another implementation, the apparatus is a chip, a chip system or a circuit used in a first communication device.

[0121] In a fourteenth aspect, the present application provides a processor for executing the methods provided in the above aspects.

[0122] For the operations such as sending and acquiring / receiving involved in the processor, unless otherwise specified, or unless they conflict with their actual function or internal logic in the relevant description, they can be understood as operations such as processor output, reception, input, etc., or as sending and receiving operations performed by the radio frequency circuit and antenna, and this application does not limit this.

[0123] 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 first to sixth aspects above.

[0124] In the sixteenth aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute a method in any possible implementation manner of the first to sixth aspects.

[0125] In the seventeenth aspect, a chip is provided, the chip including 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 first to sixth aspects mentioned above.

[0126] 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

[0127] Figure 1 A schematic diagram of a network architecture applicable to an embodiment of the present application is shown.

[0128] Figure 2 A schematic diagram of another network architecture applicable to an embodiment of the present application is shown.

[0129] Figure 3 A schematic diagram of the time difference of arrival positioning technology is shown.

[0130] Figure 4 A schematic flow chart of a communication method 400 provided in an embodiment of the present application is shown.

[0131] Figure 5 A schematic flow chart of a communication method 500 provided in an embodiment of the present application is shown.

[0132] Figure 6 A schematic diagram showing continuous distribution of reference signals in the frequency domain applicable to an embodiment of the present application is shown.

[0133] Figure 7 A schematic diagram showing a non-continuous distribution of reference signals in the frequency domain applicable to an embodiment of the present application is shown.

[0134] Figure 8 A schematic flow chart of a communication method 800 provided in an embodiment of the present application is shown.

[0135] Fig. 9 A schematic flowchart of a communication method 900 provided in an embodiment of the present application is shown.

[0136] Fig.10 A schematic block diagram of a communication device 1000 provided in an embodiment of the present application is shown.

[0137] Fig.11 A schematic block diagram of another communication device 1100 provided in an embodiment of the present application is shown.

[0138] Fig.12A schematic diagram of a chip system 1200 provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0139] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0140] The technical solution provided in this application can be applied to various communication systems, such as: the fifth generation (5th generation, 5G) or new radio (new radio, NR) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, etc. The technical solution provided in this application can also be applied to future communication systems, such as the sixth generation (6th Generation, 6G) mobile communication system. The technical solution provided in this application can also be applied to device to device (device to device, D2D) communication, vehicle to everything (vehicle-to-everything, V2X) communication, machine to machine (machine to machine, M2M) communication, machine type communication (machine type communication, MTC), and Internet of things (Internet of things, IoT) communication system or other communication systems. This application is not limited to this.

[0141] In the embodiment of the present application, the network device may be any device with wireless transceiver function. The device includes but is not limited to: evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved NodeB, or homeNode B, HNB), baseband unit (BBU), access point (AP) in wireless fidelity (WiFi) system, wireless relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (TRP), etc., and can also be 5G, such as the next generation Node Base station (gNB) in NR system, or transmission point (TRP or TP), one or a group of (including multiple antenna panels) antenna panels of a base station in 5G system, or it can also be a network node constituting a gNB or a transmission point, such as a baseband unit (BBU), or a distributed unit (DBU). unit, DU), etc., or base stations in the next-generation communication 6G system, etc.

[0142] In some deployments, the gNB may include a centralized unit (CU) and a DU. The gNB may also include an active antenna unit (AAU). The CU implements some functions of the gNB, and the DU implements some functions of the gNB, 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) layer, the medium access control (MAC) layer, and the physical (PHY) layer. The AAU implements some physical layer processing functions, radio frequency processing, and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be converted from the information of the PHY layer, therefore, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by the DU, or by the DU and the AAU. It can be understood that the network device can be a device including one or more of a CU node, a DU node, and an AAU node. In addition, the CU may be classified as a network device in an access network (radio access network, RAN), or the CU may be classified as a network device in a core network (core network, CN), which is not limited in the present application.

[0143] The network equipment provides services for the cell, and the terminal equipment communicates with the cell through the transmission resources (for example, frequency domain resources, or spectrum resources) allocated by the network equipment. The cell can belong to a macro base station (for example, macro eNB or macro gNB, etc.), or it can belong to a base station corresponding to a small cell. The small cell here may include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0144] 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.

[0145] The terminal device can be a device that provides voice / data connectivity to users, for example, a handheld device with wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminals can be: mobile phones, tablet computers (pad), computers with wireless transceiver functions (such as laptops, PDAs, etc.), mobile Internet devices (mobile internet devices, MID), virtual reality (virtual reality, VR) devices, augmented reality (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 (session initiation protocol, SIP) phones, wireless local loop (wireless local loop, WLL) stations, personal digital assistants (personal digital assistants) assistant, PDA), handheld devices with wireless communication function, computing devices or other processing devices connected to a wireless modem, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminal devices in future evolved public land mobile communication networks (public land mobile network, PLMN), etc.

[0146] Among them, wearable devices can also be called wearable smart devices, which are a general term for the intelligent design and development of wearable devices for daily wear using wearable technology, 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 clothes or accessories. Wearable devices are not only hardware devices, but also realize powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, 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.

[0147] In addition, the terminal device can also be a terminal device in the Internet of Things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection. IoT technology can achieve massive connections, deep coverage, and terminal power saving through narrowband NB technology, for example.

[0148] 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, which 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. And, 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 items 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, the words "first", "second" and the like are used to distinguish the same items or similar items with substantially the same functions and effects. Those skilled in the art will understand that the words "first", "second" and the like do not limit the quantity and execution order, and the words "first", "second" and the like do not necessarily limit the differences. At the same time, in the embodiments of the present application, the words "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 solutions. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete manner for ease of understanding.

[0149] 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.

[0150] To facilitate understanding of the embodiments of the present application, first Figure 1A schematic diagram of a communication system 100 used in an embodiment of the present application is described in detail.

[0151] like Figure 1 As shown, the communication system 100 includes a terminal device ( Figure 1 UE) and the radio access network ( Figure 1 In the figure, it is represented as gNB and next generation evolved node B (ng-eNB). ng-eNB represents an LTE base station connected to the 5G core network, and gNB represents a 5G base station connected to the 5G core network. It should be understood that the above Figure 1 The communication system 100 shown 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. Figure 1 It is not drawn in the figure, and this application does not limit this. It should be understood that the ng-eNB and the gNB, or between two ng-eNBs, or between two gNBs communicate through the Xn interface, and the Xn interface 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 through the proximity-based services communication 5 (proximity-based services communication 5, PC5) interface.

[0152] Figure 2 A schematic diagram of another communication system 200 applied in an embodiment of the present application.

[0153] like Figure 2 As shown, the communication system 200 includes a terminal device ( Figure 2 UE), wireless access network ( Figure 2 In the figure, it is represented as the next generation radio access network (NG-RAN) and the core network.

[0154] The radio access network includes one or more ng-eNBs and gNBs. The radio access network is connected to the core network via the NG-C interface.

[0155] The core network includes other functions such as access and mobility management function (AMF) and location management function (LMF).

[0156] LMF is responsible for supporting different types of location services related to UE, including positioning of UE and transmission of auxiliary data to UE. The control plane and user plane of LMF are the enhanced-serving mobile location center (E-SMLC) and the secure user plane locator platform (SLP), respectively. LMF may exchange signals with RAN, such as ng-eNB or gNB, and UE. For example, LMF and ng-eNB or gNB exchange information through new radio positioning protocol annex (NRPPa) messages, such as obtaining configuration information of positioning reference signal (PRS), sounding reference signal (SRS), cell timing, cell location information, etc. For another example, LMF and UE transmit UE capability information, auxiliary information, measurement information, etc. through LTE positioning protocol (LPP) messages.

[0157] The AMF can receive location service requests related to the UE from the location service (LCS) entity of the 5G core (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.

[0158] The terminal device is connected to the radio access network via the ng-eNB through the LTE-Uu interface. The terminal device can also be connected to the radio access network via the gNB through the NR-Uu interface.

[0159] It should be understood that the communication system 200 may include one or more base stations (including ng-eNB or gNB).

[0160] 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.

[0161] 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 at the same time.

[0162] It should be understood that Figure 2 The ng-eNB in ​​the example can also be replaced by TP.

[0163] 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.

[0164] 1. Positioning technology

[0165] Positioning is an important function in mobile communication systems, requiring the system to provide users' location information in real time. 5G communication systems require high-precision positioning, requiring outdoor positioning errors to be less than 10 meters and indoor positioning errors to be less than 1 meter.

[0166] 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, and 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.

[0167] In the 3GPP R17 standard version, multiple positioning technologies are supported, including downlink-time difference of arrival (DL-TDOA) positioning technology, downlink-angle of departure (DL-AOD) positioning technology, uplink-time difference of arrival (UL-TDOA) positioning technology, uplink-angle of arrival (UL-AOA) positioning technology, and multi-round triptime (multi-RTT) positioning technology. Among them, DL-TDOA, UL-TDOA and multi-RTT are positioning technologies based on arrival time, that is, the receiving end needs to measure the arrival time of the signal sent by the sending end, and then convert it into the distance information between the two, and finally obtain the position of the target to be located. DL-AOD and UL-AOA are positioning technologies based on angles, that is, the receiving end measures the arrival angle of the reference signal sent by the sending end, and then infers the position of the receiving end based on the angle information between the receiving end and multiple senders with known positions.

[0168] 2. Time difference of arrival (TDOA) positioning technology

[0169] The positioning principle of TDOA is to locate the source of the radio signal by measuring the time difference between the radio signal arriving at different monitoring stations. Specifically, the positioning management device calculates the time difference between the radio signal arriving at two monitoring stations, obtains the distance difference based on the time difference, and thus obtains a hyperbola; the positioning management device can obtain two or more hyperbolas through the time difference measured by three or more monitoring stations, and then the positioning management device realizes the positioning of the source according to the intersection of the two or more hyperbolas.

[0170] Figure 3 Schematic diagram of TDOA positioning technology. Figure 3 The terminal device in the above-mentioned TDOA positioning technology corresponds to the transmitting source of the radio signal. Figure 3 The base stations 1, 2 and 3 in the figure correspond to the monitoring stations for measuring radio signals in the above TDOA positioning technology. That is, the terminal device sends a signal, and the base stations 1, 2 and 3 respectively measure the signal sent by the terminal device.

[0171] As an example, the time difference between the signal sent by the terminal device and the base station 1 and the base station 2 is Δt1, and the time difference between the signal sent by the terminal device and the base station 2 and the base station 3 is Δt2. Multiply the time difference Δt1 by the electromagnetic wave speed to obtain the distance difference L1, and multiply the time difference Δt2 by the electromagnetic wave speed to obtain the distance difference L2. The positioning management device obtains the functional relationship between the position of base station 1, the position of base station 2, and the distance difference L1. Figure 3 The hyperbola MN shown in FIG. 1 is obtained by the positioning management device according to the functional relationship between the position of base station 2, the position of base station 3 and the distance difference L2. Figure 3 The hyperbola RS shown in . Furthermore, the positioning management device can realize the positioning of the terminal device according to the intersection point of the hyperbola MN and the hyperbola RS.

[0172] exist Figure 3 Among them, one of base station 1, base station 2 and base station 3 is a serving base station for the terminal device, and the other two base stations are neighboring base stations for the terminal device.

[0173] The serving base station of a terminal device refers to the base station that currently provides communication connection services for the terminal device. The neighboring base station of a terminal device refers to the base station adjacent to the serving base station. In other words, the serving base station refers to the base station of the serving cell of the terminal device. The neighboring base station refers to the base station of the cell adjacent to the serving cell of the terminal device.

[0174] It should be noted that in Figure 3 In the present invention, three base stations are used to realize the positioning of the terminal device, but the present 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.

[0175] Based on Figure 1 and Figure 2 The communication system shown in the figure, for the sidelink scenario, currently mainly introduces a sidelink positioning reference signal (SL-PRS) for positioning measurement. Specifically, in a shared resource pool (a resource pool that can carry both the sidelink positioning reference signal and the sidelink communication signal, wherein the resource pool is a set of time-frequency resources for sidelink communication pre-configured by the network high layer) in a frequency division multiplexing manner, the SL-PRS is embedded in the time slot where the physical layer sidelink shared channel (physical sidelink shared channel, PSSCH) is located (wherein the SL-PRS enjoys the same bandwidth and transmission power as the PSSCH), so that the SL-PRS and PSSCH are sent together in a 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, since data and SL-PRS can be sent simultaneously, resources are becoming increasingly scarce, and the configuration mechanism of SL-PRS is becoming increasingly complex, and it may even be the case that SL-PRS cannot be configured, thereby failing to maximize resource utilization.

[0176] On the other hand, since in the sidelink communication, the resource pool uses subchannels as the frequency domain scheduling unit (sidelink resource pool subchannel: in the frequency domain, the total bandwidth of the resource pool is divided into several subchannels with equal bandwidth, and the sidelink communication resource scheduling is scheduled in units of subchannels in the frequency domain), it is impossible to ensure that the bandwidth of the sidelink reference signal used for positioning measurement is large enough. Since the bandwidth is positively correlated with the 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 lead to 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 by itself, the bandwidth of the resources used for data transmission in the frequency domain varies, and the receiver of the measurement quantity cannot know the measurement bandwidth of its positioning measurement, and cannot judge the accuracy of the measurement quantity, so it is impossible to give the accuracy range of the positioning result.

[0177] The present application provides a sidelink positioning method, which uses a reference signal for data demodulation to perform positioning measurement without occupying additional resources, thereby improving resource utilization. At the same time, by indicating the bandwidth requirement of the positioning measurement, the positioning accuracy and positioning reliability are improved.

[0178] Combine the following Figure 4 A side link positioning method proposed in this application is described in detail.

[0179] Figure 4 It is a schematic diagram of a side link positioning method 400 provided in an embodiment of the present application.

[0180] 410. The first communication device sends first information.

[0181] The first information is used to instruct the second communication device to perform sidelink positioning measurement based on the reference signal.

[0182] It should be understood that for different positioning scenarios, the first communication device sends the first information in different ways.

[0183] 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.

[0184] The first communication device is a device with communication and positioning requirements, such as a terminal device.

[0185] 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 is not limited to this.

[0186] Among them, RSU can be regarded as a terminal device with a fixed position, which is mainly used to communicate with traditional terminal devices to provide public signal configuration information and assist in information sharing between terminal devices.

[0187] Exemplarily, the first communication device is a device to be located (or a target device), and the second communication device is an anchor device.

[0188] In a possible implementation, when the device to be located (or the target device) is within the coverage of the network, 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 the target device).

[0189] Exemplarily, the first communication device is a LMF, and the second communication device is a device with positioning capability, such as an anchor device.

[0190] It should be understood that in the scenario where the device to be located (or the target device) is within the coverage of the network, the LMF initiates the positioning measurement and performs the positioning.

[0191] 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.

[0192] 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:

[0193] Physical sidelink shared channel demodulation reference signal (physical sidelink shared channel demodulation reference signal, PSSCH DMRS), physical sidelink control channel demodulation reference signal (physical sidelink control channel demodulation reference signal, PSCCH DMRS), physical sidelink broadcast channel demodulation reference signal (physical sidelink broadcast channel demodulation reference signal, PSBCH DMRS), sidelink channel state information reference signal (sidelink channel state information reference signal, SL CSI-RS), sidelink phase tracking reference signal (sidelink phase tracking reference signal, SL PT-RS).

[0194] It should be understood that in the present application, the reference signal is a reference signal other than SL-PRS, or in other words, the reference signal is a reference signal other than SL-PRS. That is to say, the first information is used to instruct the second communication device to perform side link 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 side link positioning measurement based on a reference signal other than SL-PRS.

[0195] It should be noted that, in the present application, the reference signal may also be referred to as a pilot signal, and the present application does not limit this.

[0196] 420. 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.

[0197] 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.

[0198] 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.

[0199] 430. The second communication device sends a measurement report.

[0200] 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.

[0201] Specifically, the measurement report includes the positioning measurement amount and bandwidth information corresponding to the reference signal.

[0202] The positioning measurement amount is a measurement amount obtained by the second communication device performing sidelink positioning measurement based on the reference signal, and the positioning measurement amount is used by the first communication device to determine the position of the device to be positioned.

[0203] Exemplarily, the positioning measurement quantity may be the angle of arrival (AOA) of a reference signal, the sidelink relative time of arrival (SL-RTOA) of a reference signal, etc., which is not limited in the present application.

[0204] 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.

[0205] Optionally, the measurement report further includes at least one of the following:

[0206] 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.

[0207] 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.

[0208] The measurement time is the time when the second communication device performs side link positioning measurement.

[0209] In a possible implementation manner, the second communication device sends a measurement report to the first communication device.

[0210] 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 the positioning measurement and performs positioning. 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 coverage of the network, the first communication device can be the LMF.

[0211] In the above scheme, 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 minimum measurement bandwidth for the 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 other than SL-PRS for sidelink positioning measurement.

[0212] 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.

[0213] 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 included in the measurement report and the bandwidth information corresponding to the reference signal.

[0214] 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 amount may refer to the specific process of determining the location information of the device to be located according to the positioning measurement amount in the prior art, and the present application is not limited thereto.

[0215] It should be understood that the first communication 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 communication device can select a positioning measurement amount with a larger positioning measurement bandwidth for positioning, further improving the positioning accuracy.

[0216] 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.

[0217] 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.

[0218] 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 value corresponding to the larger time-frequency density of the reference signal under the same measurement bandwidth to improve the positioning accuracy.

[0219] It should be noted that the present application does not limit the number of first communication devices and second communication devices.

[0220] For example, in the above 430, at least three second communication devices send measurement reports to the first communication device, and in 440, the first communication device determines the location information of the device to be located according to the at least three measurement reports, and so on.

[0221] Optionally, the method 400 further includes: 450, the first communications device sends a measurement time window.

[0222] The measurement time window is used to indicate the time for sidelink positioning measurement.

[0223] 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.

[0224] Optionally, in a scenario of relative or absolute positioning initiated between user devices, when the first communication device is the device to be positioned, the first communication device also needs to acquire side link resources and send a reference signal to the second communication device, and method 400 also includes 460-461.

[0225] 460. The first communication device obtains a side link resource.

[0226] 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 communication requirements while also meeting the minimum measurement bandwidth requirement.

[0227] In a possible implementation manner, the first communication device obtains the sidelink resource through mode 1 or mode 2.

[0228] Among them, mode 1 is that when the target device is within the coverage of the base station, it requests the sidelink resource from the base station. After receiving the request, the base station schedules the sidelink resource for the target device, and the target device obtains the sidelink resource. Mode 2 is that the target device obtains the sidelink resource based on perception. Specifically, the target device receives the sidelink control information and the channel capability perception result, excludes the occupied sidelink resources, selects and occupies the remaining sidelink resources, and thus obtains the sidelink resource.

[0229] It should be noted that the first communication device may obtain the side link resources through mode 1 or mode 2 by referring to the specific method of obtaining the side link resources in the prior art, and the present application does not limit this.

[0230] 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.

[0231] Optionally, when the device to be located is within the coverage of the network 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, and method 400 also includes 470-471.

[0232] 470. The device to be located obtains a sidelink resource.

[0233] 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 acquiring the sidelink resource needs to meet the minimum measurement bandwidth requirement while meeting the communication requirements.

[0234] In a possible implementation manner, the device to be located obtains sidelink resources through mode 1 or mode 2.

[0235] 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.

[0236] The above combination Figure 4 A side link positioning method provided in this application is described below. Figure 4 , combined with Figure 5-Figure 6, the process of sidelink positioning in different positioning measurement scenarios is described in detail.

[0237] Combine the following Figure 5 , aiming at the scenario of relative or absolute positioning initiated between user devices (devices to be positioned), a side link positioning method proposed in the present application is described in detail. Figure 5 For reference Figure 4 For the sake of convenience, Figure 4 The first network device is called the device to be located, and the second network device is called the anchor device.

[0238] Figure 5 It is a schematic diagram of a side link positioning method 500 provided in an embodiment of the present application.

[0239] 510. The device to be located obtains a sidelink resource.

[0240] 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.

[0241] The sidelink resources are used to send positioning measurement related signaling and sidelink communication data.

[0242] In a possible implementation manner, the device to be located obtains sidelink resources through mode 1 or mode 2.

[0243] It should be noted that the process in which the above-mentioned device to be located obtains 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 repetition, its detailed description is omitted.

[0244] 520. The device to be positioned sends first information to the anchor device.

[0245] Correspondingly, the anchor device receives the first information from the device to be located.

[0246] 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 the present application, the reference signal may also be referred to as a pilot signal, which is not limited in the present application.

[0247] It should be noted that the above-mentioned reference signal may refer to the related description of the reference signal in 410. Here, in order to avoid redundancy, its detailed description is omitted.

[0248] 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 another 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.

[0249] 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.

[0250] 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 the corresponding positioning accuracy be provided.

[0251] In a possible implementation manner, the device to be positioned determines a minimum measurement bandwidth requirement according to a current positioning accuracy requirement.

[0252] Optionally, in 521, the device to be positioned sends a measurement time window to the anchor device.

[0253] The measurement time window is used to indicate the time when a possible positioning measurement occurs.

[0254] 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.

[0255] It should be noted that the present 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.

[0256] 530. The device to be positioned sends a reference signal to the anchor device.

[0257] Accordingly, the anchor device receives the reference signal from the user equipment.

[0258] 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 for sending the reference signal by the device to be positioned meet the bandwidth requirement for positioning.

[0259] 540 , the anchor device determines whether the bandwidth of the reference signal meets the minimum measurement bandwidth requirement.

[0260] 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.

[0261] In a possible implementation manner, when the anchor point device determines that the bandwidth of the reference signal is greater than or equal to the minimum measurement bandwidth requirement, the anchor point device performs sidelink positioning measurement based on the reference signal.

[0262] In a possible implementation manner, 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 the sidelink positioning measurement.

[0263] 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.

[0264] 550, the anchor device performs side link positioning measurement and determines a measurement report.

[0265] 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.

[0266] 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 prior art (for example, DL-TDOA, DL-AOD, UL-TDOA, UL-AOA, multi-RTT, etc.), and this application is not limited to this.

[0267] The measurement report includes the positioning measurement value and bandwidth information corresponding to the reference signal.

[0268] Among them, 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 the position of the device to be positioned. Exemplarily, the positioning measurement quantity can be the angle of arrival (AOA) of the reference signal, the sidelink relative time of arrival (SL-RTOA) of the reference signal, etc., and this application is not limited to this.

[0269] 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.

[0270] For example, when the reference signal is a PSSCH DMRS and the reference signal is continuously and evenly distributed in the frequency domain (such as sidelink communication using cellular spectrum), the bandwidth occupied by the reference signal reported by the anchor device in the frequency domain is as follows: Figure 6 shown.

[0271] Exemplarily, 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. At this time, 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, the 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 the 1st, 5th, 9th, and 13th sub-channels for transmission, such as Figure 7 As shown, the data is distributed as much as possible over the entire bandwidth), the anchor device reports the bandwidth occupied by the reference signal in the frequency domain, such as reporting Figure 7 In {1,5,9,13}, the occupied index is used, or the index of the subchannel occupied by the reporting group interval and the measurement signal in the group is 4, and the occupied subchannel index in the group is 1. It should be understood that Figure 7 In the example, each of the 1st, 5th, 9th, and 13th subchannels can be Figure 6 As shown, Figure 7 It is only briefly illustrated in the figure, and sub-channels other than the 1st, 5th, 9th and 13th sub-channels are not drawn, and this application does not limit this.

[0272] Optionally, the measurement report further includes at least one of the following:

[0273] 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.

[0274] 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 .

[0275] The measurement time is the time when the anchor device performs positioning measurement. It should be understood that the device to be positioned can perform positioning calculation based on the measurement time and the positioning measurement quantity with a similar time, thereby improving the positioning accuracy and reliability.

[0276] The location of the time-frequency resource corresponding to the reference signal (resource pattern) 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 frequency domain of the reference signal (e.g. Figure 6 The comb size is 2), and the time domain position of the reference signal (such as Figure 6 The time domain position of PSSCH DMRS is the 1st and 5th symbols starting with 0).

[0277] 560. The anchor device sends a measurement report to the user equipment.

[0278] Accordingly, the user equipment receives the measurement report from the anchor device.

[0279] 570. The device to be located determines the position of the device to be located according to the measurement report.

[0280] 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.

[0281] 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 resources corresponding to the reference signal, and the position of the anchor device.

[0282] Exemplarily, the device to be positioned receives measurement reports reported by three anchor point devices (anchor point A, anchor point B, anchor point C). Within the measurement time window, anchor point A undergoes two positioning measurements A1 and A2. The measurement report reported by anchor point A includes measurement report A1 and measurement report A2. Measurement report A1 is {TOA: 9.5m; bandwidth: 40MHz; antenna port: #1; measurement time 14:36:58; position of time-frequency resources corresponding to PSSCH DMRS: 5th symbol in time domain, starting position of frequency domain subchannel is 1, interval 2, such as Figure 6}, measurement report A2 is {TOA: 10m; bandwidth: 100MHz; antenna port: #1; measurement time 14:36:59; the location of the time-frequency resource corresponding to PSSCHDMRS: the 5th symbol in the time domain, the starting position of the frequency domain subchannel is 1, and the interval is 2, such as Figure 6Similarly, anchor point B has two positioning measurements B1 and B2. The measurement report reported by anchor point B includes 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 PSSCH DMRS: the 5th symbol in the time domain, the starting position of the frequency domain subchannel is 1, and the interval is 2, such as Figure 6}, measurement report B2 is {TOA: 10m; bandwidth: 100M; 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, such as Figure 6 Anchor point C has two measurements C1 and C2. 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 PSSCH DMRS: the 5th symbol in the time domain, the starting position of the frequency domain subchannel is 1, and the interval is 2, such as Figure 6}, 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, such as Figure 6 As mentioned above, the larger the bandwidth, the more accurate the TOA measurement. The device to be located is located according to the TOA corresponding to the A2, B2 and C1 measurements. The positions of the anchor devices 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 measurement report is (7.5,7.5).

[0283] It should be understood that for the relative or absolute positioning scenario initiated between user devices, in addition to the following Figure 5 As shown, the device to be positioned initiates positioning measurement and performs positioning, and the anchor device may also initiate positioning measurement and perform positioning, that is, the anchor device performs Figure 5 The action of the device to be located is executed by the device to be located 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 the 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.

[0284] 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.

[0285] Combine the following Figure 8 , for the scenario where the device to be located is within the network coverage and the positioning measurement is initiated by LMF, a side link positioning method proposed in this application is described in detail. Figure 8 For reference Figure 4 For the sake of convenience, Figure 4 The first network device in the LMF is called LMF, and the second network device is called anchor device.

[0286] Figure 8 It is a schematic diagram of a side link positioning method 800 provided in an embodiment of the present application.

[0287] 810. LMF sends first information to the anchor device.

[0288] Accordingly, the anchor device receives the first information from the LMF.

[0289] 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.

[0290] 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.

[0291] It should be noted that the above-mentioned reference signal may refer to the related description of the reference signal in 410. Here, in order to avoid redundancy, its detailed description is omitted.

[0292] 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.

[0293] Optionally, at 811, the LMF sends a measurement time window to the anchor device.

[0294] The measurement time window is used to indicate the time when a possible positioning measurement occurs.

[0295] Optionally, the first information further includes first indication information and / or a measurement time window.

[0296] It should be noted that the description of the above measurement time window can refer to the relevant description in 521. Here, in order to avoid redundancy, its detailed description is omitted.

[0297] 820. The anchor device sends first information to the user equipment.

[0298] Correspondingly, the device to be located receives the first information from the anchor device.

[0299] 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 requirement) included in the first information to send data, thereby improving the measurement success rate of the anchor device.

[0300] Optionally, at 821, the anchor device sends a measurement time window to the device to be located.

[0301] Accordingly, the device to be positioned receives the measurement time window from the anchor device.

[0302] Specifically, when the anchor device receives the measurement time window from the LMF in 811, the anchor device forwards the measurement time window to the device to be positioned.

[0303] 830. The device to be located obtains a sidelink resource.

[0304] Specifically, the device to be located acquires channel resources that meet the measurement condition based on the minimum measurement bandwidth requirement in the first information.

[0305] It should be noted that the process of the above-mentioned device to be located obtaining the side link resource can refer to the relevant description of the first communication device obtaining the side link resource in 460. Here, in order to avoid redundancy, its detailed description is omitted.

[0306] 840. The device to be positioned sends a reference signal to the anchor device.

[0307] Accordingly, the anchor device receives the reference signal from the user equipment.

[0308] 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 for sending the reference signal by the device to be positioned meet the bandwidth requirement for positioning.

[0309] 850. The anchor device determines whether the bandwidth of the reference signal meets the minimum measurement bandwidth requirement.

[0310] It should be noted that the process of the anchor point 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.

[0311] 860, the anchor point device performs positioning measurement and determines a measurement report.

[0312] It should be noted that the process of the above-mentioned anchor point 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.

[0313] 870. The anchor device sends a measurement report to the LMF.

[0314] Accordingly, the LMF receives the measurement report from the anchor device.

[0315] 880. LMF determines the position of the device to be located according to the measurement report.

[0316] 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.

[0317] In a possible implementation mode, LMF calculates the position of the device to be located based on the positioning measurement quantity 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 resources corresponding to the reference signal, and the position of the anchor device.

[0318] It should be noted that the process in which the above-mentioned LMF determines the position of the device to be located according to the measurement report can refer to the specific process in 570 in which the device to be located determines the position of the device to be located according to the measurement report. Here, in order to avoid redundancy, its detailed description is omitted.

[0319] 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 indicating the minimum measurement bandwidth of the anchor device for the 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 other than SL-PRS for sidelink positioning measurements.

[0320] It should be understood that for the scenario where the device to be located is within the network coverage and the positioning measurement is initiated by LMF, in addition to the following Figure 8As shown, in addition to the LMF initiating positioning measurements and performing positioning, and the anchor device determining the positioning measurement amount and reporting the measurement report, the LMF can also initiate positioning measurements and perform positioning, and the device to be positioned determines the positioning measurement amount and reports the measurement report. For example, the LMF initiates positioning measurements 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 positioned. When the device to be positioned determines that the bandwidth of the reference signal meets the minimum measurement bandwidth requirement, it performs side link positioning measurements, determines the measurement report, and sends measurement reports to the three anchor devices respectively. The three anchor devices forward the measurement reports to the LMF, and the LMF jointly determines 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.

[0321] Fig. 9 It is a schematic diagram of a side link positioning method 900 provided in an embodiment of the present application.

[0322] 910. The first communication device sends second information.

[0323] 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.

[0324] 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.

[0325] 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.

[0326] It should be noted that the process of the first communication device sending the second information is similar to the process of 410, and reference may be made to the relevant description of 410. Here, in order to avoid redundancy, its detailed description is omitted.

[0327] 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.

[0328] 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.

[0329] 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.

[0330] 930. The second communication device sends a measurement report.

[0331] The measurement report is used to indicate the result of the sidelink positioning measurement.

[0332] Specifically, the measurement report includes the positioning measurement amount and bandwidth information corresponding to the first channel.

[0333] The positioning measurement amount is a measurement amount obtained by the second communication device performing sidelink positioning measurement based on the first channel, and the positioning measurement amount is used by the first communication device to determine the position of the first communication device.

[0334] The bandwidth information corresponding to the first channel is the bandwidth occupied by the first channel in the frequency domain.

[0335] Optionally, the measurement report further includes at least one of the following:

[0336] The antenna port number corresponding to the first channel, the measurement time, the third indication information, and the fourth indication information.

[0337] The third indication information is used to indicate whether the first channel is used in this positioning measurement.

[0338] The fourth indication information is used to indicate whether the current positioning measurement adopts the decoding data inverse encoding and modulation process to enhance the channel estimation of the data signal on the basis of adopting the first channel.

[0339] 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.

[0340] 940. The first communication device determines location information of the device to be located according to the measurement report.

[0341] 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.

[0342] It should be noted that the process in which the first communication device determines the location information of the device to be located according to the measurement report can refer to the relevant description in 540. Here, in order to avoid redundancy, its detailed description is omitted.

[0343] Optionally, the method 900 further includes: 950, the first communications device sends a measurement time window.

[0344] The measurement time window is used to indicate the time for sidelink positioning measurement.

[0345] 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.

[0346] Optionally, in the scenario of relative or absolute positioning initiated between user devices, when the first communication device is the device to be positioned, the first communication device also needs to acquire side link resources and send a data signal to the second communication device based on the first channel, and method 900 also includes 960-961.

[0347] 960. The first communication device obtains a side link resource.

[0348] 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 acquiring the sidelink resource needs to meet the minimum measurement bandwidth requirement while meeting the communication requirements.

[0349] In a possible implementation manner, the first communication device obtains the sidelink resource through mode 1 or mode 2.

[0350] It should be noted that the first communication device may obtain the side link resources through mode 1 or mode 2 by referring to the specific method of obtaining the side link resources in the prior art, and the present application does not limit this.

[0351] 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 to the second communication device on the first channel based on the sidelink resource.

[0352] Optionally, when the device to be located is within the coverage of the network 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 data signal to the second communication device on the first channel. Method 900 also includes 970-971.

[0353] 970. The device to be located obtains sidelink resources.

[0354] 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 acquiring the sidelink resource needs to meet the minimum measurement bandwidth requirement while meeting the communication requirements.

[0355] In a possible implementation manner, the device to be located obtains sidelink resources through mode 1 or mode 2.

[0356] 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 to a second communication device on the first channel based on the sidelink resource.

[0357] It should be noted that when the above 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 Figure 5 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); when the above 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 LMF, reference can be made to Figure 8 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 located will not be described in detail here.

[0358] 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).

[0359] It can be understood that the Figures 4 to 9 The examples are only for the convenience of those skilled in the art to understand the embodiments of the present application, and are not intended to limit the embodiments of the present application to the specific scenarios illustrated. Figures 4 to 9 It is obvious that various equivalent modifications or changes can be made, and such modifications or changes also fall within the scope of the embodiments of the present application.

[0360] It can also be understood that some optional features in the embodiments of the present application may not depend on other features in some scenarios, or may be combined with other features in some scenarios, without limitation.

[0361] It can also be understood that the solutions in the various embodiments of the present application can be used in reasonable combination, and the explanations or descriptions of the various terms appearing in the embodiments can be mutually referenced or explained in the various embodiments, without limitation.

[0362] It can also be understood that the sizes of the various digital 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.

[0363] 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 protection scope of the embodiments of the present application.

[0364] It can also be understood that the term "and / or" in this article is only a description of the 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. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0365] 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 (such as chips or circuits) that can be implemented by the first communication device; in addition, the methods and operations implemented by the second communication device can also be implemented by components (such as chips or circuits) that can be implemented by the second communication device, 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 method embodiments. 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.

[0366] It should be understood that the first communication device and the second communication device can perform some or all of the steps in the above embodiments, and these steps or operations are only examples. The embodiments of the present application can also perform other operations or variations of various operations. In addition, the various steps can be performed in different orders presented in the above embodiments, and it is possible that not all operations in the above embodiments need to be performed.

[0367] Combined with the above Figure 4-Figure 9The sidelink positioning method provided by the embodiment of the present application is described in detail. Figure 10-12 The communication device provided in the embodiment of the present application is described in detail. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment, so the contents not described in detail can be referred to the method embodiment above, and some contents will not be repeated for the sake of brevity.

[0368] Fig.10 1 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 perform data processing. 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 called a communication interface or a communication unit.

[0369] 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.

[0370] 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.

[0371] In a possible implementation manner, the transceiver unit 1010 is configured to send the first information. The transceiver unit 1010 is also configured to receive a measurement report.

[0372] In another possible implementation, the processing unit 1020 is configured to receive the first information. The processing unit 1020 is configured to perform a sidelink positioning measurement based on the reference signal. The transceiver unit 1010 is configured to send a measurement report.

[0373] 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 (e.g., a shared processor, a proprietary processor, or a group processor, etc.) and a memory for executing one or more software or firmware programs, a merged logic circuit, and / or other suitable components that support the described functions. In an optional example, those skilled in the art may understand that the device 1000 may be specifically the first communication device or the second communication device in the above-mentioned embodiment, and may 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 may be specifically the first communication device or the second communication device in the above-mentioned embodiment, and may 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, and to avoid repetition, it will not be repeated here.

[0374] The apparatus 1000 of each of the above-mentioned schemes 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 schemes 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, respectively performing the transceiver operations and related processing operations in each method embodiment.

[0375] 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.

[0376] It should be pointed out that Fig.10 The device in the embodiment may be a network element or device in the foregoing embodiment, or may be a chip or a 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 or a microprocessor or an integrated circuit integrated on the chip. This is not limited here.

[0377] like Fig.11As shown, an embodiment of the present application provides another communication device 1100. The device 1100 includes a processor 1110, the processor 1110 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 execute the methods in the above method embodiments. The device 1100 also includes a transceiver 1130, and the transceiver 1130 is used to receive and / or send signals. For example, the processor 1110 is used to control the transceiver 1130 to receive and / or send signals.

[0378] Optionally, there are one or more processors 1110 .

[0379] Optionally, the memory 1120 is one or more.

[0380] Optionally, the memory 1120 is integrated with the processor 1110 or provided separately.

[0381] As a solution, the apparatus 1100 is used to implement the operations performed by the first communication device or the second communication device in each of the above method embodiments.

[0382] 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. Figure 4 , Figure 5 , Figure 8 , Fig. 9 A first communication device in any one of the embodiments shown in FIG. 1 , or Figure 4 , Figure 5 , Figure 8 , Fig. 9 A method for a first communication device in any one of the embodiments shown in FIG.

[0383] 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. Figure 4 , Figure 5 , Figure 8 , Fig. 9 A second communication device in any one of the embodiments shown in FIG. 1 , or Figure 4 , Figure 5 , Figure 8 , Fig. 9 A method for a second communication device in any one of the embodiments shown in the drawings.

[0384] It should be understood that the processor mentioned in the embodiments of the present application may be a central processing unit (CPU), or 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. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0385] 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).

[0386] 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.

[0387] 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.

[0388] like Fig.12 The 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 .

[0389] Among them, the logic circuit 1210 can be a processing circuit in the chip system 1200. The logic circuit 1210 can be coupled to the storage unit and call the instructions in the storage unit so that the chip system 1200 can implement the methods and functions of each embodiment of the present application. The input / output interface 1220 can be an input / output circuit in the chip system 1200, outputting information processed by the chip system 1200, or inputting data or signaling information to be processed into the chip system 1200 for processing.

[0390] 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 method embodiments.

[0391] For example, the logic circuit 1210 is used to implement operations related to the processing by the first communication device in the above method embodiment, such as Figure 4 , Figure 5 , Figure 8 , Fig. 9 The input / output interface 1220 is used to implement the operations related to sending and / or receiving by the first communication device in the above method embodiment, such as Figure 4 , Figure 5 , Figure 8 , Fig. 9 The sending and / or receiving related operations are performed by the first communication device in any one of the illustrated embodiments.

[0392] For example, the logic circuit 1210 is used to implement operations related to the processing by the second communication device in the above method embodiment, such as Figure 4 , Figure 8 , Fig. 9 The input / output interface 1220 is used to implement the operations related to sending and / or receiving by the second communication device in the above method embodiment, such as Figure 4 , Figure 5 , Figure 8 , Fig. 9 The sending and / or receiving related operations are performed by the second communication device in any one of the illustrated embodiments.

[0393] An embodiment of the present application also provides a computer-readable storage medium on which computer instructions for implementing the methods executed by the first communication device or the second communication device in the above-mentioned method embodiments are stored.

[0394] For example, when the computer program is executed by a computer, the computer can implement the method executed by the first communication device or the second communication device in each embodiment of the above method.

[0395] An embodiment of the present application also 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.

[0396] 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.

[0397] The terms "component", "module", "system", etc. used in this specification 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 applications running on a computing device and a computing device can be components. One or more components may reside in a process and / or an execution thread, and a component may be located on a computer and / or distributed between two or more computers. In addition, these components may be executed from various computer-readable media having various data structures stored thereon. Components may, for example, communicate through local and / or remote processes according to signals having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system and / or a network, such as the Internet interacting with other systems through signals).

[0398] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented 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 to be beyond the scope of this application.

[0399] Those skilled in the art can 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.

[0400] In the several embodiments provided in the present 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 only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, 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.

[0401] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0402] 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.

[0403] 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 can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods 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.

[0404] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope 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 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 according to any one of claims 1 to 5, and the second communication device is used to execute the method according to any one of claims 6 to 11.

13. 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 11.

14. 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 11 is executed.

15. A computer program product comprising instructions which, when executed on a computer, cause the method as claimed in any one of claims 1 to 11 to be performed.

16. A chip system, characterized in that: It comprises: 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 claimed in any one of claims 1 to 11.

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