Reference signal transmission method, apparatus, storage medium, and chip

Abstract

A method, device, storage medium, and chip for transmitting a reference signal are provided, which relate to the field of communication technology, so as to provide a solution for determining an angle (e.g., AOD) based on phase information. In this application, a first communication device obtains first setting information of a first reference signal, and the first setting information includes indication information of a plurality of time domain resources used to determine the phase information. The first communication device receives a first reference signal, determines a plurality of first phase information corresponding to a signal received on the plurality of time domain resources, and obtains second phase information and / or first launch angle information based on the plurality of first phase information. The first communication device may determine the plurality of phase information based on the plurality of time domain resources, and then determine a launch angle of the reference signal based on the plurality of phase information. Thus, a solution for determining an angle (e.g., AOD) based on phase information may be provided.

Description

[Technical Field]

[0001] This application relates to the field of communication technology, particularly to signal transmission methods, devices, storage media, and chips. [Background technology]

[0002] With the rapid development of communication technology, high-precision positioning has gradually been identified as a key research project within the 5th generation mobile networks (or 5th generation wireless systems, 5G) of the 3rd Generation Partnership Project (3GPP). New Radio (NR) positioning is primarily applied to the following scenarios: enhanced mobile broadband (eMBB) outdoor scenarios, eMBB indoor scenarios, ultra-reliable low latency communication (URLLC) scenarios, and massive machine type communication (mMTC) / Internet of Things (IOT) scenarios. NR positioning is further required to possess high security, scalability, high applicability, accuracy assurance in high-speed applications, and other characteristics.

[0003] Currently, terminal devices can be positioned based on angles used for positioning, such as the angle of departure (AOD) or angle of arrival (AOA). In current positioning methods, terminal devices can detect a positioning reference signal (PRS) transmitted by an access point (AP) to obtain reference signal received powers (RSRP) corresponding to multiple beams. The angle of departure (AOD) at which the AP's radio signal leaves the AP is calculated based on the RSRP value and information about the beams transmitted by the base station, and the AOD can be used to position the terminal device.

[0004] However, as positioning requirements and application scenarios become increasingly diverse, providing further angle (e.g., AOD) determination solutions has become an urgent issue to address. [Overview of the project]

[0005] This application provides a reference signal transmission method, apparatus, storage medium, and chip applicable to a solution that determines phase information based on a reference signal transmission solution and further determines an angle (e.g., AOD) based on the phase information.

[0006] According to a first aspect, an embodiment of the present application provides a reference signal transmission method. The method comprises a first communication device acquiring first setting information for a first reference signal, the first setting information including indication information for a plurality of time-domain resources used to determine phase information. The first communication device receives the first reference signal and determines a plurality of first phase information corresponding to the plurality of time-domain resources, one of the plurality of first phase information being determined based on a signal received at one of the plurality of time-domain resources. The first communication device transmits second phase information and / or first launch angle information, the second phase information being determined based on the plurality of first phase information, and the first launch angle information being determined based on the plurality of first phase information.

[0007] The first communication device determines multiple time-domain resources for which phase information needs to be determined based on first configuration information, and determines multiple phase information based on the multiple time-domain resources. Thus, the transmission angle of the reference signal can be further determined based on the multiple phase information. The present invention provides a solution for determining an angle (e.g., AOD) based on phase information, so that when an angle necessary for positioning needs to be determined, one further arbitrary method may exist.

[0008] In a possible implementation, the multiple time-domain resources include a first time-domain resource and a second time-domain resource. The first communication device receives a first portion of a first reference signal in the first time-domain resource and determines one of a plurality of first phase information based on the first portion of the first reference signal, and the first communication device receives a second portion of the first reference signal in the second time-domain resource and determines another of a plurality of first phase information based on the second portion of the first reference signal.

[0009] Since the first communication device can determine multiple first phase information by using a single reference signal, the number of reference signals used to calculate the launch angle is reduced, saving network resources and reducing latency.

[0010] In possible implementations, the directive information of multiple time-domain resources , the Information regarding the number of time-domain resource units between two of the S1 time-domain resources corresponding to one reference signal. Includes S1 is an integer greater than 1, and S1 time-domain resources are time-domain resources used by the first reference signal send end to transmit the first reference signal. 。

[0011] In this way, the first communication device can determine a rule for determining the first phase information by the first communication device, according to the rule for transmitting the first reference signal by the transmitting end. The two rules may coincide. Furthermore, if the second communication device intermittently transmits the first reference signal in a discontinuous time-domain resource, the first communication device knows the rule for transmitting the first reference signal by the second communication device, and therefore can determine each signal with better quality according to the coincident rule. Furthermore, in order to improve the accuracy of the first phase information, the first communication device may determine the first phase information based on the determined signal with better quality.

[0012] In possible implementations, the directive information of multiple time-domain resources used to determine phase information is In addition or alternatively, This includes information about S1 time-domain resources corresponding to the first reference signal. In this way, the first communication device can determine a plurality of time-domain resources used by the first communication device to determine the first phase information, based on the S1 time-domain resources used by the transmitting end to transmit the first reference signal.

[0013] In a possible implementation, two adjacent time-domain resources within S1 time-domain resources are separated by at least one time-domain resource unit. In this way, if two adjacent time-domain resources within S1 time-domain resources correspond to two different ports, the second communication device may have time to perform port switching operations between the adjacent time-domain resources within S1 time-domain resources.

[0014] In a possible implementation, adjacent time-domain resources within S1 time-domain resources are separated by Q1 time-domain resource units, where Q1 is a positive integer. In this way, the solution can be regular, and the number of bits occupied by information indicating the interval between time-domain resources within S1 time-domain resources can be further reduced.

[0015] In a possible implementation, a time-domain resource unit is one or more time-domain symbols. In this way, the first communication device can acquire multiple first phase information at symbol granularity and then determine the launch angle based on at least one of the phase information, thereby reducing the delay in a solution that calculates the launch angle based on behavior information.

[0016] In a possible implementation, the first configuration information further includes correspondences between S1 time-domain resources corresponding to a first reference signal and a plurality of ports, where S1 is an integer greater than 1. The plurality of ports are ports used by the transmitting end of the first reference signal to transmit the first reference signal using S1 time-domain resources. In this way, the first communication device may determine correspondences between a plurality of first phase information and a first port, and the first communication device may further report correspondences between the first phase information and the first port, thereby allowing the second communication device to determine the spacing between ports corresponding to the first phase information based on these correspondences.

[0017] In a possible implementation, two adjacent time-domain resources within S1 time-domain resources correspond to two different ports. In this way, the first communication device can obtain two different first phase information based on signals transmitted from two adjacent time-domain resources within S1 time-domain resources. By using the two different first phase information, a phase difference can be obtained. If the ports corresponding to each pair of adjacent time-domain resources are different, a maximum number of phase differences can be obtained, thereby improving the accuracy of the launch angle.

[0018] In a possible implementation, one of the plurality of ports corresponds to one of the S1 time domain resources. In this way, in the process of the second communication device transmitting the first reference signal with the S1 time domain resources, one port is used once. In this way, the second communication device can transmit the first reference signal with as many ports as possible, and then the first communication device can obtain the first phase information corresponding to more different ports. More phase differences can be obtained based on the first phase information corresponding to more different ports. It can be seen that in this solution, the number of phase differences will increase and the accuracy of the emission angle will be further improved.

[0019] In a possible implementation, one of the plurality of ports corresponds to a plurality of time domain resources among the S1 time domain resources. In this way, in the process of the second communication device transmitting the first reference signal with the S1 time domain resources, one port can be used multiple times. In this case, one port may be set as a reference port to provide calibration for other ports. Furthermore, since the port is reused multiple times, the number of ports required in this solution can be reduced, the requirements for the hardware of the second communication device can be lowered, and the cost of the second communication device can be reduced.

[0020] In a possible implementation, the first configuration information further includes information regarding the frequency domain resources corresponding to the first reference signal, whereby the first communication device receives the first reference signal in the corresponding frequency domain resources based on the first configuration information.

[0021] In a possible implementation, the second phase information includes at least one of the following content: at least two of the plurality of first phase information, at least one phase difference information corresponding to the plurality of first phase information, or average information of at least one phase difference information. Thereby, the flexibility of the solution can be improved.

[0022] In a possible implementation, when the second phase information includes at least two first phase information, the order of at least two first phase information in the second phase information is consistent with the order of time domain resource corresponding to at least two first phase information. In this way, since the second communication device can determine the ports corresponding to the first phase information included in the second phase information based on the ports used in sequence to transmit the first reference signal, the second communication device can determine the interval between the ports corresponding to the phase difference information corresponding to a plurality of first phase information, and calculate the emission angle based on the interval.

[0023] In a possible implementation, when the second phase information includes at least two first phase information, the order of at least two first phase information in the second phase information is consistent with the order of the identifiers of the ports corresponding to at least two first phase information. In this way, since the second communication device can determine the ports corresponding to the first phase information included in the second phase information based on the pre-set port identifier sequence, the second communication device can determine the interval between the ports corresponding to the phase difference information corresponding to a plurality of first phase information, and calculate the emission angle based on the interval.

[0024] In a possible implementation, when the second phase information includes at least two phase difference information corresponding to a plurality of first phase information, the order of at least two phase difference information in the second phase information is consistent with the order of the time domain resources corresponding to the phase difference information. In this way, since the second communication device can determine the ports corresponding to the phase difference information included in the second phase information based on the ports used in sequence to transmit the first reference signal, the second communication device can determine the interval between the ports corresponding to the phase difference information, and calculate the emission angle based on the interval.

[0025] In a possible implementation, if the second phase information includes at least two phase difference information corresponding to a plurality of first phase information, the order of the at least two phase difference information in the second phase information matches the order of the port identifiers corresponding to the phase difference information. In this way, the second communication device can determine the ports corresponding to the phase difference information included in the second phase information based on a pre-set port identifier sequence, and so the second communication device can determine the spacing between the ports corresponding to the phase difference information and calculate the launch angle based on the spacing.

[0026] In a possible implementation, after the first communication device has determined a plurality of first phase information corresponding to a first reference signal received in a plurality of time-domain resources used to determine the phase information, the method further includes the first communication device transmitting reliability information for the second phase information. In this way, if the position information of the first communication device is determined based on the launch angle corresponding to the second phase information, the calculation can be performed by referring to the reliability information for the second phase information, so that the accuracy of positioning the first communication device can be improved.

[0027] In a possible implementation, the reliability information of the second phase information includes standard deviation information and / or variance information corresponding to multiple first phase information.

[0028] In a possible implementation, after the first communication device has determined a plurality of first phase information corresponding to a first reference signal received in a plurality of time-domain resources used to determine the phase information, the method further includes the first communication device transmitting first instruction information. The first instruction information indicates a correspondence between a parameter in the second phase information and an identifier of a port used to transmit the first reference signal. Thus, the second communication device can determine the port corresponding to the parameter in the second phase information based on the first instruction information, and so the second communication device determines the interval between the ports corresponding to the parameter in the second phase information and calculates the launch angle based on the interval.

[0029] In a possible implementation, the first launch angle information includes at least one launch angle information corresponding to a plurality of first phase information, and the at least one launch angle information is The interval between ports used to transmit multiple first phase information and a first reference signal, Corresponding to multiple first phase information, at least one first launch angle average information determined based on at least two of the at least one launch angle information, or A second averaged launch angle information that corresponds to multiple first phase information and is determined based on averaged information of phase difference information corresponding to multiple first phase information and averaged port spacing information determined based on the average spacing between multiple ports used to transmit the first reference signal. It is determined based on the following.

[0030] This improves the flexibility of the solution. Furthermore, when the first communication device reports the first launch angle information, the positioning server can directly position the first communication device based on the first launch angle information reported by the first communication device. This eliminates the step of the first communication device reporting the second phase information to the second communication device via the positioning server, and also eliminates the step of the second communication device transmitting the determined launch angle to the positioning server, thereby reducing signaling interaction and saving network resources.

[0031] In possible implementations, if the first launch angle information includes multiple launch angle information corresponding to multiple first phase information, the order of the multiple launch angle information within the first launch angle information corresponds to the order of the time-domain resources corresponding to the multiple first phase information, or the order of the multiple launch angle information within the first launch angle information corresponds to the order of the port identifiers corresponding to the multiple first phase information. This improves the flexibility of the solution.

[0032] In a possible implementation, after the first communication device has determined a plurality of first phase information corresponding to a first reference signal received in a plurality of time-domain resources used to determine the phase information, the method is performed by the first communication device Launch angle informationThis further includes transmitting reliability information. In this way, if another device determines the position information of the first communication device based on the first firing angle information, the calculation can be performed by referring to the reliability information of the first firing angle information, so that the accuracy of positioning the first communication device can be improved.

[0033] In a possible implementation, the reliability information of the first launch angle information includes standard deviation information and / or variance information of multiple launch angle information corresponding to multiple first phase information.

[0034] In a possible implementation, after the first communication device has determined a plurality of first phase information corresponding to a first reference signal received in a plurality of time-domain resources used to determine the phase information, the method further includes the first communication device transmitting second instruction information, the second instruction information indicating a correspondence between a parameter in the first launch angle information and an identifier of a port used to transmit the first reference signal.

[0035] In a possible implementation, multiple first phase information sets are in one-to-one correspondence with multiple time-domain resources used to determine the phase information. For one of the multiple first phase information sets, that first phase information is determined based on the normal path and / or additional paths that the signal received in the time-domain resource corresponding to that first phase information takes to arrive at the first communication device. This can improve the flexibility of the solution.

[0036] According to a second aspect, an embodiment of the present application provides a reference signal transmission method, the method comprising: a second communication device generating a first reference signal; and the second communication device transmitting the first reference signal to the first communication device using a plurality of time-domain resources, two of which correspond to two different ports used to transmit the first reference signal.

[0037] Since the second communication device transmits the first reference signal through multiple ports using multiple time-domain resources, the first communication device can determine multiple phase information based on the multiple time-domain resources, and then determine the transmission angle of the reference signal based on the multiple phase information. The present invention can provide a solution for determining an angle (e.g., AOD) based on phase information, so it can be seen that there may be one further arbitrary solution when it is necessary to determine an angle used for positioning.

[0038] In possible implementations, multiple time-domain resources include a third time-domain resource and a fourth time-domain resource, and multiple ports include a first port and a second port. The transmission of a first reference signal by a second communication device to a first communication device using multiple time-domain resources includes the second communication device transmitting a first portion of the first reference signal using the third time-domain resource via the first port, and the second communication device transmitting a second portion of the first reference signal using the fourth time-domain resource via the second port.

[0039] Since the first and second parts of the first reference signal are transmitted by different ports of the second communication device, the first communication device can calculate the launch angle by referencing the phase difference information of the multiple phase information and the distance between the ports after obtaining multiple phase information by measurement based on the signals transmitted by the different ports. Furthermore, since the second communication device transmits different parts of the same reference signal by different ports, and the first communication device can determine multiple first phase information by using a single reference signal, the number of reference signals used to calculate the launch angle is reduced, saving network resources and reducing latency.

[0040] In a possible implementation, the second communication device transmitting a first portion of the first reference signal in a third time-domain resource via a first port includes the second communication device transmitting a first portion of the first reference signal in a third time-domain resource via a first port connected to a first radio frequency channel. The second communication device transmitting a second portion of the first reference signal in a fourth time-domain resource via a second port includes the second communication device transmitting a second portion of the first reference signal in a fourth time-domain resource via a second port connected to a first radio frequency channel.

[0041] Therefore, in the case of a second communication device having only one radio frequency channel including at least two ports, positioning may alternatively be performed based on phase information corresponding to a first reference signal transmitted by the second communication device, thereby reducing the hardware requirements of the second communication device in a solution that performs positioning based on phase information, and reducing the cost of the second communication device.

[0042] In a possible implementation, a first portion of the first reference signal is used to determine one of a plurality of first phase information, and a second portion of the first reference signal is used to determine one of the plurality of first phase information.

[0043] Since the first communication device can determine multiple first phase information by using a single reference signal, the number of reference signals used to calculate the launch angle is reduced, saving network resources and reducing latency.

[0044] In a possible implementation, before the second communication device transmits a first reference signal to the first communication device using multiple time-domain resources, the method further includes the second communication device determining second setting information for the first reference signal, the second setting information including fourth instruction information, the instruction information indicating S1 time-domain resources, where S1 is an integer greater than 1, and the S1 time-domain resources are multiple time-domain resources used to transmit the first reference signal.

[0045] In possible implementations, the second configuration information includes the following content: Information regarding the number of time-domain resource units between two of S1 time-domain resources, and / or Information about S1 time-domain resources It further includes at least one of the following. This can improve the flexibility of the solution.

[0046] In a feasible implementation, two adjacent time-domain resources within S1 time-domain resources are separated by at least one time-domain resource unit. See above for the advantageous effects; further details are not provided here.

[0047] In a possible implementation, adjacent time-domain resources within S1 time-domain resources are separated by Q1 time-domain resource units, where Q1 is a positive integer. For the advantageous effects, please refer to the above description. Further details are not provided here.

[0048] In possible implementations, a single time-domain resource unit is one or more time-domain symbols. See above for details on the beneficial effects; further details are not provided here.

[0049] In a possible implementation, the second configuration information further includes correspondences between S1 time-domain resources and multiple ports, where S1 is an integer greater than 1. The second communication device transmitting a first reference signal to the first communication device with S1 time-domain resource units based on the two configuration information includes the second communication device transmitting a first reference signal to the first communication device through the port corresponding to a time-domain resource among the S1 time-domain resources.

[0050] In a feasible implementation, two adjacent time-domain resources within S1 time-domain resources correspond to two different ports. See above for the advantageous effects; further details are not provided here.

[0051] In possible implementations, one of multiple ports corresponds to one or more of S1 time-domain resources. See above for details on the beneficial effects; further details are not provided here.

[0052] In possible implementations, the second configuration information further includes information about frequency-domain resources corresponding to the first reference signal. For advantageous effects, please refer to the above; further details are not provided here.

[0053] According to a third aspect, an embodiment of the present application provides a reference signal transmission method. The method includes a second communication device receiving second phase information and the second communication device determining the emission angle of a first reference signal based on the second phase information. The second phase information is determined based on a plurality of first phase information, and the plurality of first phase information is determined based on a first reference signal.

[0054] In other possible embodiments provided herein, the second communication device in this embodiment may determine the transmission angle of the first reference signal based on a plurality of first phase pieces of the first reference signal. Thus, when it is necessary to determine the angle used for positioning, one further optional solution may exist.

[0055] In possible implementations, the second phase information will contain the following content: At least two of the multiple first phase information, At least one phase difference information corresponding to multiple first phase information, or Average information of at least one phase difference information It includes at least one of the following. See above for details on the beneficial effects. Further details are not provided here.

[0056] In possible implementations, if the second phase information includes at least two first phase information entries, the order of at least two first phase information entries within the second phase information matches the order of time-domain resources corresponding to at least two first phase information entries, or the order of at least two first phase information entries within the second phase information matches the order of port identifiers corresponding to at least two first phase information entries. For advantageous effects, please refer to the above. Further details are not provided here again.

[0057] In possible implementations, if the second phase information includes at least two phase difference information corresponding to multiple first phase information, the order of at least two phase difference information within the second phase information shall match the order of time-domain resources corresponding to the phase difference information, or the order of at least two phase difference information within the second phase information shall match the order of port identifiers corresponding to the phase difference information. For advantageous effects, please refer to the above. Further details are not provided here again.

[0058] In a possible implementation, after the second communication device has transmitted a first reference signal to the first communication device using multiple time-domain resources, the method further includes the second communication device receiving reliability information of the second phase information. For advantageous effects, please refer to the above. Further details are not described again here.

[0059] In possible implementations, the reliability information of the second phase information includes standard deviation information and / or variance information corresponding to multiple first phase information. For advantageous effects, please refer to the above; further details are not provided here.

[0060] In a possible implementation, after a second communication device has transmitted a first reference signal to a first communication device using multiple time-domain resources, the method further includes the second communication device receiving first instruction information, the first instruction information indicating a correspondence between parameters in second phase information and an identifier of the port used to transmit the first reference signal.

[0061] In this way, the second communication device can determine the port corresponding to the parameter in the second phase information based on the first instruction information, thereby determining the spacing between the ports corresponding to the parameters in the second phase information, and calculating the launch angle based on the spacing.

[0062] In possible implementations, multiple first phase information sets are in one-to-one correspondence with multiple time-domain resources used to transmit a first reference signal. For one of the multiple first phase information sets, that first phase information set is determined based on the normal path and / or additional path that the signal transmitted on the time-domain resource corresponding to that first phase information set takes to arrive at the first communication device. For advantageous effects, please refer to the above. Further details are not provided again here.

[0063] According to a fourth aspect, an embodiment of the present invention provides an angle-based positioning method used for positioning. The method includes a positioning server receiving a plurality of first launch angle information, one of which is determined based on a plurality of first phase information determined by a first communication device, and the plurality of first phase information determined based on a first reference signal. The positioning server determines the position information of the first communication device based on the plurality of first launch angle information.

[0064] The first communication device determines multiple phase information based on a first reference signal. Therefore, the emission angle of the reference signal can be further determined based on the multiple phase information. It can be seen that the present invention provides a solution for determining an angle (e.g., AOD) based on phase information and then positioning the first communication device. Therefore, when it is necessary to determine the position information of the first communication device, one further arbitrary solution may exist.

[0065] In other possible implementations, the second communication device may instead receive the first launch angle information, and then transmit the first launch angle information to the positioning server.

[0066] In a possible implementation, the first launch angle information includes at least one launch angle information corresponding to a plurality of first phase information, and the at least one launch angle information is The interval between ports used to transmit multiple first phase information and a first reference signal, Corresponding to multiple first phase information, at least one first launch angle average information determined based on at least two of the at least one launch angle information, or A second averaged launch angle information that corresponds to multiple first phase information and is determined based on averaged information of phase difference information corresponding to multiple first phase information and averaged port spacing information determined based on the average spacing between multiple ports used to transmit the first reference signal. It is determined based on the following.

[0067] Please refer to the above information regarding the advantageous effects. Further details will not be provided here.

[0068] In possible implementations, if the first launch angle information includes multiple launch angle information corresponding to multiple first phase information, the order of the multiple launch angle information within the first launch angle information corresponds to the order of the time-domain resources corresponding to the multiple first phase information, or the order of the multiple launch angle information within the first launch angle information corresponds to the order of the port identifiers corresponding to the multiple first phase information. For advantageous effects, please refer to the above. Further details are not described again here.

[0069] In a possible implementation, the method further includes the positioning server receiving reliability information for the first launch angle information before the positioning server determines the location information of the first communication device based on a plurality of first launch angle information. In this way, when the positioning server determines the location information of the first communication device based on a plurality of first launch angle information, the calculation can be performed with reference to the reliability information for the first launch angle information, so that the accuracy of positioning the first communication device can be improved.

[0070] In a possible implementation, the reliability information of the first launch angle information includes standard deviation information and / or variance information of multiple launch angle information corresponding to multiple first phase information.

[0071] In a possible implementation, the method further includes the positioning server receiving second instruction information before the positioning server determines the location information of a first communication device based on a plurality of first launch angle information. The second instruction information indicates a correspondence between a parameter in the first launch angle information and an identifier of a port used to transmit a first reference signal.

[0072] According to a fifth aspect, an embodiment of the present application provides another reference signal transmission method, the method comprising a second communication device receiving a second reference signal. The second communication device determines a plurality of third phase information corresponding to the second reference signal received in a plurality of time-domain resources. The second communication device determines the angle of arrival of the second reference signal based on the plurality of third phase information.

[0073] The second communication device determines multiple third phase information corresponding to the second reference signal based on multiple time-domain resources. Thus, the angle of arrival of the reference signal can be further determined based on the multiple third phase information. Since the present invention can provide a solution for determining an angle (e.g., AOA) based on phase information, it can be seen that there may be one further arbitrary solution when it is necessary to determine an angle used for positioning.

[0074] In a possible implementation, the determination of a plurality of third phase information by a second communication device corresponding to a second reference signal received in a plurality of time-domain resources includes the second communication device receiving a first portion of the second reference signal in a fifth time-domain resource and determining one of the plurality of third phase information based on the first portion of the second reference signal, and the second communication device receiving a second portion of the second reference signal in a sixth time-domain resource and determining another of the plurality of third phase information based on the second portion of the second reference signal.

[0075] Since the second communication device can determine multiple third phase information pieces using a single reference signal, the number of reference signals used to calculate the angle of arrival is reduced, saving network resources and reducing latency.

[0076] In a possible implementation, the reception of the second reference signal by the second communication device includes the second communication device receiving a first portion of the second reference signal in a fifth time-domain resource through a third port, and the second communication device receiving a second portion of the second reference signal in a sixth time-domain resource through a fourth port.

[0077] Since the first and second parts of the second reference signal are received by different ports of the second communication device, after obtaining multiple phase information by measurement based on the signals received by the different ports, the second communication device can calculate the angle of arrival by referring to the phase difference information of the multiple phase information and the interval between ports. Furthermore, since the second communication device receives different parts of the same reference signal by different ports, and the second communication device can determine multiple third phase information by using a single reference signal, the number of reference signals used to calculate the angle of arrival is reduced, saving network resources and reducing latency.

[0078] In a possible implementation, the reception of a first portion of the second reference signal by a second communication device in a fifth time-domain resource via a third port includes the reception of a first portion of the second reference signal in a fifth time-domain resource via a third port connected to a second radio frequency channel. The reception of a second portion of the second reference signal in a sixth time-domain resource via a fourth port includes the transmission of a second portion of the second reference signal in a sixth time-domain resource via a fourth port connected to a second radio frequency channel.

[0079] Therefore, in the case of a second communication device having only one radio frequency channel including at least two ports, positioning may alternatively be performed based on phase information corresponding to a second reference signal transmitted by the first communication device, thereby reducing the hardware requirements of the second communication device in a solution that performs positioning based on phase information, and reducing the cost of the second communication device.

[0080] In a possible implementation, before the second communication device receives the second reference signal, the method further includes the second communication device obtaining fourth setting information of the second reference signal, the fourth setting information including indication information for a plurality of time-domain resources used to determine phase information.

[0081] Since the second communication device can receive the second reference signal based on the fourth configuration information, the fourth configuration information can be set more appropriately for the second communication device based on the applicable scenario, thereby making the solution performed on the second communication device side more appropriate. Furthermore, a flexible method for setting the fourth configuration information can improve the flexibility of the solution.

[0082] In a possible implementation, the instruction information for multiple time-domain resources used to determine phase information includes information used to determine the number of time-domain resource units between two of the multiple time-domain resources used to determine phase information. In this way, the second communication device can determine the multiple time-domain resources used to determine phase information based on the information regarding the number of time-domain resource units between two time-domain resources, determine the phase information based on signals received by the multiple time-domain resources, and perform port switching at the interval between the multiple time-domain resources.

[0083] In a possible implementation, the reference information for multiple time-domain resources used to determine phase information includes information about the multiple time-domain resources used to determine phase information.

[0084] In a possible implementation, multiple time-domain resources used to determine phase information are separated into at least one time-domain resource unit. In this way, if two adjacent time-domain resources among the multiple time-domain resources correspond to two different ports, the second communication device may have time to perform port switching operations between adjacent time-domain resources among the multiple time-domain resources.

[0085] In a possible implementation, the multiple time-domain resources used to determine the phase information are separated into Q2 time-domain resource units, where Q2 is a positive integer. In this way, the solution can be regular, and the number of bits occupied by information indicating the interval between time-domain resources among the multiple time-domain resources can be further reduced.

[0086] In a possible implementation, a time-domain resource unit is one or more time-domain symbols. In this way, the second communication device can acquire multiple first phase information at symbol granularity and then determine the launch angle based on at least one of the phase information, thereby reducing the delay in a solution that calculates the launch angle based on behavior information.

[0087] In a possible implementation, the fourth configuration information further includes correspondences between multiple time-domain resources used to determine phase information and multiple ports. The reception of the second reference signal by the second communication device includes the second communication device receiving the second reference signal at the port corresponding to a time-domain resource among the multiple time-domain resources used to determine phase information. In this way, the second communication device can perform port switching based on the fourth configuration information. Since the fourth configuration information can be configured flexibly, the flexibility of the solution can be improved.

[0088] In a possible implementation, two adjacent time-domain resources among multiple time-domain resources used to determine phase information correspond to two different ports. In this way, the second communication device can obtain two different third phase information based on signals received at two adjacent time-domain resources among the multiple time-domain resources. By using the two different third phase information, a phase difference can be obtained. If the ports corresponding to each pair of adjacent time-domain resources are different, a maximum number of phase differences can be obtained, thereby improving the accuracy of the angle of arrival.

[0089] In a possible implementation, one of the multiple ports corresponds to one or more of the multiple time-domain resources used to determine the phase information. In this way, one port is used once in the process of the second communication device transmitting the second reference signal on multiple time-domain resources. In this manner, the second communication device can receive the second reference signal on as many different ports as possible, and then the second communication device can obtain third phase information corresponding to more different ports. More phase differences can be obtained based on the third phase information corresponding to more different ports. In this solution, the number of phase differences increases, and it is found that the accuracy of the angle of arrival is further improved.

[0090] In any possible implementation, the fourth configuration information further includes information about frequency domain resources corresponding to the second reference signal.

[0091] In a possible implementation, multiple third-phase information pieces are in a one-to-one correspondence with multiple time-domain resources used to determine the phase information. For one of the multiple third-phase information pieces, that third-phase information is determined based on the normal path and / or additional path that the signal received in the time-domain resource corresponding to that third-phase information takes to arrive at the second communication device. This can improve the flexibility of the solution.

[0092] A communication device is provided according to the sixth aspect. The communication device may be a first communication device, a second communication device, or a third communication device. The communication device may include a communication unit and a processing unit to perform any implementation of any method according to the first to fifth aspects. The communication unit is configured to perform functions related to transmission and reception. Optionally, the communication unit may include a receiving unit and a transmitting unit. In the design, the communication device may be a communication chip, the processing unit may be one or more processors or processor cores, and the communication unit may be input / output circuits or ports of the communication chip.

[0093] In other designs, the communication unit may consist of a transmitter and a receiver, or it may consist of a transmitter and a receiver.

[0094] Optionally, the communication device may further include a module that can be configured to perform any implementation of any method according to the first to fifth embodiments.

[0095] A communication device is provided according to the seventh aspect. The communication device may be a first communication device, a second communication device, or a third communication device. The communication device may include a processor and memory. Optionally, a transceiver may be further included. The memory is configured to store computer programs or instructions. The processor is configured to call computer programs or instructions from memory and to execute computer programs or instructions. Once the processor has executed the computer programs or instructions in memory, the communication device can perform any implementation of any method according to the first to fifth aspects.

[0096] Arbitrarily, there is one or more processors and one or more memory locations.

[0097] Optionally, the memory may be integrated with the processor, or the memory and processor may be arranged separately.

[0098] Optionally, a transceiver may include a transmitter and a receiver.

[0099] A communication device is provided according to the eighth aspect. The communication device may be a first communication device, a second communication device, or a third communication device. The communication device may include a processor. The processor may be coupled to memory and configured to perform a method according to any one of the first to fifth aspects and any one of the possible implementations of the first to fifth aspects. Optionally, the communication device may further include memory. Optionally, the communication device may further include a communication interface, and the processor may be coupled to the communication interface.

[0100] In practice, when the communication device is a wireless communication device, the communication interface may be a transceiver or an input / output interface. Optionally, the transceiver may be a transceiver circuit. Optionally, the input / output interface may be an input / output circuit.

[0101] In other implementations, when the communication device is a chip or chip system, the communication interface may be an input / output interface, interface circuit, output circuit, input circuit, pin, associated circuit, etc., on the chip or chip system. The processor may alternatively be embodied as a processing circuit or logic circuit.

[0102] A system is provided according to the ninth aspect. The system includes a first communication device and a second communication device, and may further include a third communication device.

[0103] A computer program product is provided in accordance with the tenth aspect. The computer program product includes a computer program (which may also be called code or instructions). When the computer program is executed, the computer may perform a method according to any possible implementation of the first aspect, or the computer may perform a method according to any implementation of the first through fifth aspects.

[0104] A computer-readable storage medium is provided according to the eleventh aspect. The computer-readable medium stores a computer program (which may also be called code or instructions). When the computer program is executed on a computer, the computer may perform a method according to any possible implementation of the first aspect, or the computer may perform a method according to any implementation of the first through fifth aspects.

[0105] A chip system is provided according to the twelfth aspect, which may include a processor. The processor is coupled to memory and may be configured to perform a method according to any one of the first to fifth aspects and any possible implementation according to any one of the first to fifth aspects. Optionally, the chip system may further include memory. The memory is configured to store computer programs (which may also be called code or instructions). The processor is configured to call computer programs from memory and to execute computer programs, thereby the device ion into which the chip system is incorporated performs a method according to any one of the first to fifth aspects and any possible implementation according to any one of the first to fifth aspects.

[0106] A communication device is provided according to the thirteenth aspect. The communication device may be a first communication device, a second communication device, or a third communication device. The communication device may include an interface circuit and a processing circuit. The interface circuit may include an input circuit and an output circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, thereby implementing a method according to any one of the first to fifth aspects and any possible implementations according to the first to fifth aspects.

[0107] In a specific implementation process, the communication device may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a trigger, any logic circuit, etc. The signal received by the input circuit may be received and input by a receiver, for example, but not limited to that. The signal output by the output circuit may be output to a transmitter, for example, but not limited to that which transmits the signal. The input circuit and the output circuit may be the same circuit, and the circuit may be configured as an input circuit and an output circuit at different moments in time. Specific implementations of the processor and various circuits are not limited to the embodiments of this application.

[0108] In practice, when the communication device is a wireless communication device, the wireless communication device may be a terminal such as a smartphone, or a wireless access network device such as a base station. The interface circuit may be a radio frequency processing chip within the wireless communication device, and the processing circuit may be a baseband processing chip within the wireless communication device.

[0109] In other implementations, the communication device may be part of a component within a wireless communication device, such as an integrated circuit product like a system chip or a communication chip. The interface circuit may be an input / output interface, interface circuit, output circuit, input circuit, pin, associated circuit, etc., on a chip or chip system. The processing circuit may be a logic circuit on a chip. [Brief explanation of the drawing]

[0110] [Figure 1a] This is a diagram of a possible network architecture to which embodiments of the present invention may be applied. [Figure 1b] This is a diagram of another possible network architecture to which embodiments of the present invention are applied. [Figure 1c] This is a diagram of a possible network architecture to which embodiments of the present invention may be applied. [Figure 2] This is a diagram showing a possible structure of a possible wireless communication device according to an embodiment of the present application. [Figure 3] This diagram shows the spacing between two ports (port a and port b) located on a communication device. [Figure 4] This is a schematic flowchart of a possible AOD determination method according to the embodiment of the present application. [Figure 5a] This is a diagram showing the structure of a possible communication device according to the present invention. [Figure 5b] This diagram shows the structure of a communication device obtained by adding a switch to the communication device shown in Figure 5a. [Figure 6] Figure 5b shows the first radio frequency channel 43 connected to a port in the port array 44 by a switch 45. [Figure 7a] This figure shows possible patterns of S1 time-domain resources corresponding to a first reference signal, according to an embodiment of the present application. [Figure 7b] This figure shows other possible patterns of S1 time-domain resources corresponding to a first reference signal, according to an embodiment of the present application. [Figure 7c] This is an example of a possible correspondence between S1 time-domain resources and ports according to an embodiment of the present application. [Figure 7d] This is an example of another possible configuration between S1 time-domain resources and ports according to an embodiment of the present application. [Figure 8A] This is a schematic flowchart of another possible AOD determination method according to the embodiment of the present application. [Figure 8B] This is a schematic flowchart of another possible AOD determination method according to the embodiment of the present application. [Figure 9] This is a diagram showing a possible determination of the emission angle of a first reference signal based on phase difference information, according to an embodiment of the present application. [Figure 10] This is a diagram of a possible AOD-based positioning solution according to an embodiment of the present application. [Figure 11A] This is a schematic flowchart of another possible AOD determination method according to the embodiment of the present application. [Figure 11B] This is a schematic flowchart of another possible AOD determination method according to the embodiment of the present application. [Figure 12] This is a schematic flowchart of another possible AOD determination method according to the embodiment of the present application. [Figure 13A] This is a schematic flowchart of another possible AOD determination method according to the embodiment of the present application. [Figure 13B] This is a schematic flowchart of another possible AOD determination method according to the embodiment of the present application. [Figure 14] This is a schematic flowchart of a possible AOA determination method according to the embodiment of the present application. [Figure 15] Figure 5b shows the second radio frequency channel 53 being connected to a port in the port array 54 by a switch 55. [Figure 16A] This is a schematic flowchart of another possible AOA determination method according to the embodiment of the present application. [Figure 16B] This is a schematic flowchart of another possible AOA determination method according to the embodiment of the present application. [Figure 17] This figure shows a possible determination of the arrival angle of a second reference signal based on phase difference information, according to an embodiment of the present application. [Figure 18] This is a diagram showing the structure of another communication device according to an embodiment of the present application. [Figure 19] This is a diagram showing the structure of another communication device according to an embodiment of the present application. [Figure 20] This is a diagram showing the structure of another communication device according to an embodiment of the present application. [Modes for carrying out the invention]

[0111] The embodiments of this application will be described in detail below with reference to the attached drawings.

[0112] The reference signal transmission method provided in the embodiments of this application can be applied to a number of industries and services to determine the angle used for positioning. The angle used for positioning may be AOD or AOA. The angle used for positioning may be used in reference to other parameters to position people and objects in order to acquire location information of people and objects. Furthermore, application development may be carried out based on the location information.

[0113] Figures 1a and 1b are diagrammatic examples of two possible system architectures to which embodiments of the present invention apply. As shown in Figure 1a, in a possible embodiment, terminal device 104 transmits a reference signal, terminal device 103 measures the received reference signal to obtain a measurement result, and terminal device 104 further determines the AOD of the signal transmitted by terminal device 104 based on the measurement result. Similarly, terminal device 105 transmits a reference signal, terminal device 103 measures the received reference signal to obtain a measurement result, and terminal device 105 further determines the AOD of the signal transmitted by terminal device 105 based on the measurement result. AODs corresponding to at least two other terminal devices may be used to position terminal device 103.

[0114] In embodiments of the present invention, if two terminal devices need to communicate with each other, the communication may be performed based on a sidelink (direct link), which is a link for data communication between the two terminal devices via the PC5 interface. In embodiments of the present invention, the sidelink may also be called a direct link or simply a sidelink. If the terminal devices are positioned based on a sidelink, the positioning solution may also be called sidelink positioning.

[0115] In other possible implementations, terminal device 103 transmits a reference signal, terminal device 104 measures the received reference signal to obtain a measurement result, and terminal device 104 further, based on the measurement result, terminal device 104 The AOA corresponding to the terminal device is determined. Terminal device 104 can obtain the relative orientation of terminal device 103. Similarly, terminal device 105 determines the AOA corresponding to terminal device 105 based on the reference signal transmitted by terminal device 103. The AOAs corresponding to at least two other terminal devices at known locations can be used to position terminal device 103.

[0116] As can be seen from the system architecture shown in Figure 1a, the solution for determining the angle used for positioning, provided in the embodiments of the present invention, can be applied to a scenario involving two terminal devices. The solution provided in the embodiments of the present invention can also be applied to a scenario involving a network device and a terminal device. As shown in Figure 1b, in a possible embodiment, base station 101 transmits a reference signal, terminal device 103 measures the received reference signal to obtain a measurement result, and base station 101 further determines the AOD of the signal transmitted by base station 101 based on the measurement result. Similarly, base station 102 transmits a reference signal, terminal device 103 measures the received reference signal to obtain a measurement result, and base station 102 further determines the AOD of the signal transmitted by base station 102 based on the measurement result. AODs corresponding to at least two base stations can be used to position terminal device 103.

[0117] In other possible implementations, terminal device 103 transmits a reference signal, base station 101 measures the received reference signal to obtain a measurement result, and base station 101 further determines the AOA corresponding to base station 101 based on the measurement result. Similarly, base station 102 determines the AOA corresponding to base station 102 based on the reference signal transmitted by terminal device 103. At least two AOAs corresponding to base stations can be used to locate terminal device 103.

[0118] In addition to the two possible application scenarios shown in Figures 1a and 1b, embodiments of the present invention may be further applied to other scenarios. As another example, base station positioning is performed by using AOD or AOA corresponding to at least two terminal devices.

[0119] The technical solutions provided in the embodiments of this application are primarily applicable to wireless communication systems. These wireless communication systems may conform to the wireless communication standards of the 3rd Generation Partnership Project (3GPP). For example, the solutions provided in the embodiments of this application may be applied to 4th generation (4G) communication systems, such as long-term evolution (LTE) communication systems, or to 5th generation (5G) communication systems, such as 5G new radio (NR) communication systems, or to various future communication systems, such as 6th generation (6G) communication systems. The technical solutions provided in embodiments of this application may also conform to other wireless communication standards, such as the IEEE 802 series (e.g., 802.11, 802.15, or 802.20). The methods provided in embodiments of this application may further be applied to Bluetooth systems, Wi-Fi systems, LoRa systems, or Internet of Vehicle systems. The methods provided in embodiments of this application may further be applied to satellite communication systems. Satellite communication systems may be integrated with the above-mentioned communication systems.

[0120] For the sake of clarity, in embodiments of this application, the 5G network architecture shown in Figure 1c is used as an example to illustrate a possible network architecture to which embodiments of this application apply. A possible network architecture to which this application applies may consist of three parts: terminal devices, access network devices (also called next-generation (NG) radio access network (RAN) devices), and a core network.

[0121] Terminal devices may include devices that provide voice and / or data connectivity to the user, and may include, for example, a portable device with wireless connectivity, or a processing device connected to a wireless model. Terminal devices may communicate with the core network through a radio access network (RAN) and exchange voice and / or data with the RAN. Terminal devices may include user equipment (UE), wireless terminal devices, mobile terminal devices, device-to-device (D2D) communication terminal devices, vehicle-to-everything (V2X) terminal devices, machine-to-machine / machine-type communication (M2M / MTC) terminal devices, Internet of Things (IoT) terminal devices, subscriber units, subscriber stations, mobile stations, remote stations, access points (AP), remote terminal devices, access terminal devices, user terminal devices, user agents, user devices, etc. For example, terminal devices may include mobile phones (also called "cellular" phones), computers equipped with mobile terminal devices, or portable, pocket-sized, handheld, or computer-embedded mobile devices.For example, terminal devices include personal communication service (PCS) telephones, cordless telephones, session initiation protocol (SIP) telephones, wireless local loop (WLL) stations, or personal digital assistants (PDAs). Alternatively, terminal devices may be tablet computers or computers equipped with wireless transceiver functionality. Alternatively, terminal devices may be virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminals in industrial control, wireless terminals in autonomous driving, wireless terminals in telemedicine, wireless terminals in smart grids, wireless terminals in smart cities, wireless terminals in smart homes, etc. Terminal devices further include restricted devices, such as devices with low power consumption, devices with limited memory capacity, or devices with limited computing power. For example, terminal devices include information detection devices such as barcodes, radio frequency identification (RFID), sensors, global positioning systems (GPS), or laser scanners.

[0122] An access network (AN) device (e.g., a base station) may be a device that communicates with wireless communication devices via an air interface through one or more cells in the access network. For example, an access network device may include an evolved node B (NodeB, eNB, or e-NodeB, evolved NodeB) in an LTE system or long-term evolution-advanced (LTE-A), or a next-generation genealogy node B (gNB) in a new radio (NR) system in fifth-generation (5G) mobile communication technology, or a central unit (CU) and a distributed unit (DU) in a cloud radio access network (Cloud RAN) system. This is not limited to embodiments of the present invention.

[0123] As shown in Figure 1c, an example is used for presentation in which the access network includes a gNB and an Ng-eNB. The Ng-eNB is an LTE base station, and the gNB is an NR base station. Terminal devices can communicate with serving base stations via Uu links. For example, a terminal device can communicate with an Ng-eNB via an LTE-Uu link and with a gNB via an NR-Uu link. Base stations can communicate with each other via Xn interfaces.

[0124] The network elements related to positioning within the core network primarily include access and mobility management function (AMF) network elements and location management function (LMF) network elements, and may also include evolved serving mobile location center (E-SMLC) network elements, unified data management (UDM) network elements, and application function (AF) network elements.

[0125] The base station can communicate with AMF network elements via the NG-C interface, and the AMF network elements can be equivalent to routers for communication between the gNB and LMF.

[0126] LMF network elements can estimate the location of terminal devices, and AMF communicates with LMF through NLs ​​interfaces.

[0127] The E-SMLC network element is primarily involved in processing positioning requests from the positioning server and selecting the appropriate AMF network element for the positioning service.

[0128] Service Location Protocol (SLP) network elements can also communicate with LMF network elements and may be involved in processing positioning requests for positioning services.

[0129] The application scenarios to which embodiments of the present invention apply may further include a location management component (LMC). The LMC may be part of the functional components of the LMF and may be incorporated into the gNB on the NG-RAN side.

[0130] The mobility management network elements, location management network elements, and service location protocol network elements in embodiments of the present application may be AMF, LMF, E-SMLC, and SLP as shown in Figure 1c, or they may be network elements with the functionality of AMF, LMF, E-SMLC, and SLP in a future communication network, such as a 6th generation (6G) network. This is not limited to the present application. For ease of description, examples in the present application in which the mobility management network elements, location management network elements, and service location protocol network elements are AMF, LMF, E-SMLC, and SLP are used for illustrative purposes.

[0131] Based on the above, Figure 2 is a diagram of a possible structure of a wireless communication device according to an embodiment of the present application. The wireless communication device may be a terminal device in the embodiment of the present application, for example, the terminal device in Figure 1a, Figure 1b, or Figure 1c. Alternatively, the wireless communication device may be a network device in the embodiment of the present application. The network device in the embodiment of the present application may be an access network device in Figure 1b or Figure 1c, for example, the base station in Figure 1b or Figure 1c.

[0132] In possible implementations, a wireless communication device may include a processing circuit and an interface circuit. The interface circuit may include an input circuit and an output circuit. The processing circuit is configured to receive signals through the input circuit and transmit signals through the output circuit, thereby performing the following methods. For example, when the wireless communication device is a terminal device, the processing circuit may perform the following method steps that can be performed on the terminal device side by controlling the interface circuit. In another example, when the wireless communication device is a network device, the processing circuit may perform the following method steps that can be performed on the network device side by controlling the interface circuit, and so on.

[0133] In practice, the interface circuit may alternatively be a radio frequency processing chip within the wireless communication device, and the processing circuit may be a baseband processing chip within the wireless communication device.

[0134] In other implementations, the wireless communication device may be part of a component within a wireless communication device, such as an integrated circuit product like a system chip or a communication chip. The interface circuit may be an input / output interface, interface circuit, output circuit, input circuit, pin, associated circuit, etc., on a chip or chip system.

[0135] In other embodiments, the processing circuit in the embodiments of the present invention may alternatively be part of a processor or a module or unit within a processor, and the interface circuit may alternatively be part of a radio frequency channel or a component within a radio frequency channel. The processor is configured to control the radio frequency channel so that the following related methods are carried out.

[0136] As shown in Figure 2, a wireless communication device may include multiple components, such as an application subsystem, memory, mass storage, a baseband subsystem, a radio frequency integrated circuit (RFIC), a ratio frequency front end (RFFE) component, and an antenna (ANT). These components may be coupled through various interconnection buses or by other electrical connection methods.

[0137] The application subsystem in Figure 2 may be the deployed processor in Figure 2, or it may be a module within the processor.

[0138] In Figure 2, ANT_1 represents the first antenna, ANT_N represents the Nth antenna, and N is a positive integer greater than 1. Tx represents the transmit path, Rx represents the receive path, and different numbers represent different paths. Each path may represent a signal processing channel. FBRx represents the feedback receive path, PRx represents the primary receive path, and DRx represents the diversity receive path. HB represents high frequency, LB represents low frequency, and HB represents high frequency and LB represents the relative magnitude of the frequency. BB represents baseband, and it should be understood that the marks and components in Figure 2 are used for illustrative purposes only and are used simply as possible embodiments. Embodiments of the present application further include other embodiments. For example, the communication device may include more or fewer paths and more or fewer components.

[0139] The application subsystem may be used as the main control system or main computing system of the communication device, and is configured to execute the main operating system and application programs, manage the software and hardware resources of the entire communication device, and provide a user interface to the user. Furthermore, the application subsystem may also include driver software related to other subsystems (e.g., the baseband subsystem). The application subsystem may include one or more processors.

[0140] In Figure 2, a radio frequency integrated circuit (including RFIC1 and one or more arbitrary RFIC2) and a radio frequency front-end component may together form a radio frequency subsystem. Based on different signal reception or transmission paths, the radio frequency subsystem may be classified into a radio frequency reception path (RF reception path) and a radio frequency transmission path (RF transmission path). The radio frequency reception path may receive radio frequency signals with an antenna, perform processing on the radio frequency signals (e.g., amplification, filtering, and down-conversion) to obtain a baseband signal, and transfer the baseband signal to a baseband subsystem. The radio frequency transmission path may receive baseband signals from the baseband subsystem, perform processing on the baseband signals (e.g., up-conversion, amplification, and filtering) to obtain a radio frequency signal, and finally radiate the radio frequency signal into space with an antenna. The radio frequency integrated circuit may be called a radio frequency processing chip or radio frequency chip.

[0141] Specifically, a radio frequency subsystem may include electronic components such as an antenna switch, antenna tuner, low noise amplifier (LNA), power amplifier (PA), mixer, local oscillator (LO), and filter, and these electronic components may be integrated into one or more chips as needed. A radio frequency integrated circuit may be called a radio frequency processing chip or radio frequency chip. A radio frequency front-end device may be a separate chip. A radio frequency chip is sometimes also called a receiver, transmitter, or transceiver. As technology advances, antennas may sometimes be considered part of a radio frequency subsystem and may be integrated into the radio frequency subsystem chip. Antennas, radio frequency front-end components, and radio frequency chips can all be manufactured and sold separately. Indeed, a radio frequency subsystem may alternatively use different components or different integration schemes based on power consumption and performance requirements. For example, several components belonging to the radio frequency front end may be integrated into the radio frequency chip, or both the antenna and the radio frequency front end components may be integrated into the radio frequency chip. The radio frequency chip may also be called a radio frequency antenna module or antenna module.

[0142] Similar to the radio frequency subsystem, which primarily processes radio frequency signals, the baseband subsystem primarily processes baseband signals. The baseband subsystem can extract useful information or data bits from the baseband signal, or convert information or data bits into the baseband signal to be transmitted. The information or data bits may represent user data or control information, such as voice, text, and video. For example, the baseband subsystem may implement signal processing operations such as modulation and demodulation, as well as encoding and decoding. Baseband signal processing operations are not entirely the same for different radio access technologies, such as 5G NR and 4G LTE.

[0143] Furthermore, since radio frequency signals are typically analog signals and signals processed by the baseband subsystem are primarily digital signals, an analog-to-digital conversion component is also required for the communication device. In this embodiment of the present invention, the analog-to-digital conversion component may be located in the baseband subsystem or the radio frequency subsystem. The analog-to-digital conversion component includes an analog-to-digital converter (ADC) that converts analog signals to digital signals and a digital-to-analog converter (DAC) that converts digital signals to analog signals. Similar to the application subsystem, the baseband subsystem may also include one or more processors.

[0144] Furthermore, the communication device further includes memory, for example, the memory and mass storage device shown in Figure 2. Furthermore, the application subsystem and the baseband subsystem may each further include one or more caches. In embodiments of the present application, memory can be classified into volatile memory and non-volatile memory (NVM). Volatile memory is memory in which data stored is lost when the power supply is interrupted. Currently, volatile memory mainly includes random access memory (RAM), including static random access memory (SRAM) and dynamic random access memory (DRAM). Non-volatile memory is memory in which data stored is not lost even if the power supply is interrupted. Common non-volatile memory includes read-only memory (ROM), optical disks, magnetic disks, and various memories based on flash memory technology. Generally, volatile memory can be used for memory and caches, while non-volatile memory can be used for mass storage devices, such as flash memory.

[0145] When describing the solutions provided in the embodiments of this application, the names and terms used in the embodiments of this application will be explained first.

[0146] (1) Port

[0147] In embodiments of the present application, a second communication device may transmit a reference signal through a logical port. A logical port may include a plurality of physical ports. The plurality of physical ports may be divided into a plurality of groups of ports, each group of ports may include one or more of the plurality of physical ports. In embodiments of the present application, a second communication device may transmit a first reference signal through a logical port. For example, the second communication device may transmit the first reference signal by switching between a plurality of groups of ports. For example, the second communication device may transmit a first portion of the first reference signal through one group of ports in the plurality of groups of ports, and then transmit a second portion of the first reference signal through another group of ports in the plurality of groups of ports. The “first port” and “second port” used to transmit the first reference signal, as described in subsequent descriptions of embodiments of the present application, may be two groups of ports in the plurality of groups of ports. Each of the two group of ports may include one or more physical ports, and the physical ports included in the two group of ports may or may not overlap.

[0148] Similarly, in embodiments of the present application, a second communication device may receive a reference signal through a logical port. A logical port may include multiple physical ports. The multiple physical ports may be divided into multiple groups of ports, each group of ports may include one or more of the multiple physical ports. In embodiments of the present application, a second communication device may receive a second reference signal through a logical port. For example, the second communication device may receive the second reference signal by switching between multiple groups of ports. For example, the second communication device may receive a first portion of the second reference signal through one group of ports in the multiple groups of ports, and then receive a second portion of the second reference signal through another group of ports in the multiple groups of ports. The “third port” and “fourth port” used to receive the second reference signal, as described in subsequent descriptions of embodiments of the present application, may be two groups of ports in the multiple groups of ports. Each of the two groups of ports may include one or more physical ports, and the physical ports included in the two groups of ports may or may not overlap.

[0149] In other words, a port located on the second communication device side, as described in the embodiments of the present application, and used to communicate (transmit or receive) a reference signal (e.g., a first reference signal or a second reference signal) (e.g., "a first port" and "a second port" used to transmit the first reference signal, or "a third port" and "a fourth port" used to receive the second reference signal) may be a logical port. A logical port may include one physical port or multiple physical ports. If a port includes one physical port, it may also be understood that the port is a physical port.

[0150] In embodiments of the present application, the port used to communicate (transmit or receive) a reference signal may also be called an antenna, antenna port, antenna interface, antenna transmitting port, antenna receiving port, phase measurement port, or phase measurement interface. Furthermore, in embodiments of the present application, a physical port located on the second communication device side and used to communicate (transmit or receive) a reference signal may also be called a physical antenna, physical antenna port, or physical antenna interface. Furthermore, in embodiments of the present application, a physical port located on the second communication device side and used to transmit a reference signal may also be called a physical antenna transmitting port, and a physical port located on the second communication device side and used to receive a reference signal may also be called a physical antenna receiving port.

[0151] The port used to communicate the reference signal as described in the embodiments of the present invention may be the antenna (ANT) shown in Figure 2, or may be understood as a port of the antenna (ANT) shown in Figure 2 that is connected to a radio frequency front end.

[0152] (2) Spacing between ports

[0153] In embodiments of the present invention, the concept of the spacing between ports is used in the process of determining the AOA or AOD. For example, if the AOD corresponding to the second communication device needs to be calculated in the subsequent content, the calculation needs to be performed by referring to the spacing between the first port and the second port. If the AOA corresponding to the second communication device needs to be calculated, the calculation needs to be performed by referring to the spacing between the third port and the fourth port. The following describes how to calculate the spacing between ports, using the calculation of the spacing between the first port and the second port as an example.

[0154] If the first port contains only one physical port, then the first port can also be understood as a physical port. If the second port contains only one physical port, then the second port can also be understood as a physical port. In this case, the distance between the first port and the second port can be the distance between the two physical ports.

[0155] If the first port includes multiple physical ports, the first port may be understood as a logical port. If the second port includes multiple physical ports, the second port may be understood as a logical port. In the case of n, the distance between the first port and the second port may be the distance between the pre-set positions of the two logical ports. One logical port corresponds to one pre-set position. The pre-set position of a logical port may be the geometric center position of the multiple physical ports corresponding to the logical port, or it may be a position within the area of ​​the multiple physical ports corresponding to the logical port, for example, the position of one physical port among the multiple physical ports corresponding to the logical port.

[0156] If the first port is a physical port and the second port is a logical port, or if the first port is a logical port and the second port is a physical port, the distance between the first port and the second port may be the distance between the physical port's position and the logical port's pre-set position.

[0157] Figure 3 is an example diagram showing the spacing between two ports (port a and port b) located on a communication device. The following explanation will be given with reference to Figure 3. Figure 3 may be a diagram showing the arrangement of ports a and port b within the hardware structure of the communication device. Port a may be the first port and port b may be the second port, or port a may be the third port and port b may be the fourth port.

[0158] As shown in Figure 3(a), port a is a physical port (i.e., port a contains one physical port), and port b is a physical port (i.e., port b contains one physical port). The distance between port a and port b can be the distance between port a and port b.

[0159] As shown in Figure 3(b), port a is a logical port and includes four physical ports (for example, port a is 2x2 port Port b is a logical port (it is an array), and it contains four physical ports (for example, port b is a logical port). b (This is a 2x2 port array). The pre-set position of port a is the geometric center point of the 2x2 port array. The pre-set position of port b is the geometric center point of the 2x2 port array. The distance between port a and port b can be the distance between the geometric center point of port a and the geometric center point of port b.

[0160] As shown in Figure 3(c), port a is a logical port and includes four physical ports (for example, port a is a 2x2 port array), and port b is a logical port and includes four physical ports (for example, port b is a 2x2 port array). b (This is a 2x2 port array). The pre-set position of port a is the position of the first port in the second row. The pre-set position of port b is the position of the first port in the second row. The interval between port a and port b can be the interval between the first port in the second row corresponding to port a and the first port in the second row corresponding to port b.

[0161] As shown in Figure 3(d), port a is a logical port and includes four physical ports (for example, port a is a 2x2 port array), and port b is a logical port and includes four physical ports (for example, port b is a 2x2 port array). b(This is a 2x2 port array). The pre-set position of port a is the position of the first port in the second row. The pre-set position of port b is the position of the second port in the second row. The interval between port a and port b can be the interval between the first port in the second row corresponding to port a and the second port in the second row corresponding to port b.

[0162] The spacing between ports is merely an example. In actual implementation, the spacing between two ports may be determined based on the actual situation.

[0163] (3) Reference signal

[0164] The reference signals in the embodiments of this application (for example, the first and second reference signals described in the following sections) may be signals used to calculate angles, such as a positioning reference signal (PRS), a sounding reference signal (SRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), or a phase tracking reference signal (PTRS). 、 The first reference signal may be a cell reference signal (CRS) or a synchronization signal / physical broadcast channel block (SS / PBCH block). The SS / PBCH block is sometimes abbreviated as SSB. For example, the first reference signal may be a PRS, and the second reference signal may be an SRS.

[0165] The reference signal in the embodiments of the present application may include a plurality of parts, for example, a first part and a second part of a first reference signal as described in the subsequent content, and a first part and a second part of a second reference signal as described in the subsequent content. Each part of the reference signal is data in a portion of the bits of the reference signal.

[0166] For example, the first part of the first reference signal is data for a portion of all the bits of the first reference signal, and the second part of the first reference signal is data for a portion of all the bits of the first reference signal. In other words, the first part and the second part of the first reference signal are bits in the reference signal generated based on the same signal sequence.

[0167] As another example, the first part of the second reference signal is data for a portion of all the bits in the second reference signal, and the second part of the second reference signal is data for a portion of all the bits in the second reference signal. In other words, the first and second parts of the second reference signal are bits in the reference signal generated based on the same signal sequence.

[0168] In other possible embodiments, the reference signal in the embodiments of the present invention may correspond to multiple segments of a time-domain symbol. A first reference signal is used as an example for illustrative purposes. All time-domain resources occupied by the first reference signal may be divided into multiple segments of the time-domain resource. Each segment of the time-domain resource contains one or more consecutive time-domain symbols, and two adjacent time-domain resources are separated by at least one time-domain symbol. The second communication device transmits the first reference signal on all time-domain resources occupied by the first reference signal, and the second communication device transmits data on segments of the time-domain resource in the form of a portion of all bits of the first reference signal.

[0169] In embodiments of the present application, the data to be transmitted that lies within the first reference signal and corresponds to a segment of a time-domain resource among all time-domain resources occupied by the first reference signal may be called a portion of the first reference signal. For example, the data to be transmitted that lies within the first reference signal and corresponds to the first segment of a time-domain resource among all time-domain resources occupied by the first reference signal is called the first portion of the first reference signal. The data to be transmitted that lies within the first reference signal and corresponds to the second segment of a time-domain resource among all time-domain resources occupied by the first reference signal is called the second portion of the first reference signal. This example also applies to the second reference signal. For example, the data to be transmitted that lies within the second reference signal and corresponds to the third segment of the first segment of a time-domain resource among all time-domain resources occupied by the second reference signal may be called the first portion of the second reference signal. The data to be transmitted that lies within the second reference signal and corresponds to the fourth segment of a time-domain resource among all time-domain resources occupied by the second reference signal is called the second portion of the second reference signal. The first reference signal is used as an example below for illustrative purposes. The relevant information for the second reference signal is the same as that for the first reference signal, and details will not be described again.

[0170] In the embodiments of the present invention, there is a correspondence between multiple segments of a time-domain resource of the first reference signal and multiple ports of the second communication device. For a segment of the time-domain resource, the second communication device transmits a portion of the data of the first reference signal in that segment of the time-domain resource by the port corresponding to that segment of the time-domain resource. Port 1, which corresponds to the first segment of the time-domain resource among the multiple segments of the time-domain resource corresponding to the first reference signal, and Port 2, which corresponds to the second segment of the time-domain resource among the multiple segments of the time-domain resource corresponding to the first reference signal, are two different ports of the second communication device. In this way, the second communication device transmits the first reference signal by at least two different ports, thereby enabling the first communication device to obtain at least two phase pieces of information based on the first reference signal and then determine the launch angle of the first reference signal by referring to the multiple phase pieces of information corresponding to the first reference signal.

[0171] One segment of a time-domain resource among multiple segments of a time-domain resource corresponding to a first reference signal may correspond to one or more ports of a second communication device. It can be understood that the second communication device transmits data that is within a portion of all bits of the first reference signal and corresponds to that time-domain segment through one or more ports. One port of the second communication device may correspond to one or more segments of a time-domain resource among multiple segments of a time-domain resource. In other words, one port may be used once or multiple times in the process of the second communication device transmitting the first reference signal.

[0172] In possible implementations, multiple segments of a time-domain resource corresponding to a first reference signal may belong to the same slot.

[0173] In other possible implementations, multiple segments of a time-domain resource corresponding to a first reference signal may alternatively belong to multiple slots. For example, multiple segments of a time-domain resource may have a one-to-one correspondence with multiple ports. In this case, two of the multiple segments of the time-domain resource may correspond to two different slots. As another example, one of the multiple segments of a time-domain resource may correspond to one or more slots. As yet another example, one of the multiple slots may correspond to one or more of the multiple segments of a time-domain resource. One slot may correspond to one or more ports of a second communication device, and one port of the second communication device may correspond to one or more of the multiple slots corresponding to multiple segments of a time-domain resource. For example, multiple slots may have a one-to-one correspondence with multiple ports of a second communication device. In this case, the second communication device may transmit the first reference signal in multiple slots through multiple ports. Data in some of all bits of the first reference signal is transmitted in each slot, and the two ports used to transmit the signal in two slots are different.

[0174] (3.1) The concept of a single reference signal

[0175] In possible embodiments, one reference signal in the embodiments of the present invention may be a reference signal corresponding to a resource identifier (resource ID). The first reference signal is used as an example for illustrative purposes. The content of the second reference signal is the same as that of the first reference signal, and details are not described again.

[0176] For example, if the first reference signal is an SRS, the resource identifier (resource ID) of the first reference signal may be set in the SRS configuration information (SRS-Config). For example, the resource identifier (resource ID) set in the SRS configuration information (SRS-Config) is 1. The SRS configuration information (SRS-Config) further includes information such as time-domain resources and frequency-domain resources set for the reference signal whose resource identifier (resource ID) is 1. The time-domain resources used by the second communication device to transmit the first reference signal may be a part of all the time-domain resources set in the configuration information (SRS-Config) for the reference signal whose resource identifier (resource ID) is 1.

[0177] For example, in the configuration information (SRS-Config), the time-domain resource configured for a reference signal with a resource identifier (resource ID) of 1 is a sequence of consecutive time-domain symbols. In the actual process of transmitting the first reference signal, the second communication device transmits the first part of the first reference signal through the first port using the third time-domain resource, and through the second port using the fourth time-domain resource. 1 The second part of the reference signal is transmitted. The third time-domain resource is part of the time-domain resources configured for the reference signal with resource ID 1 in the configuration information (SRS-Config), and the fourth time-domain resource is part of the time-domain resources configured for the reference signal with resource ID 1 in the configuration information (SRS-Config). The first part of the first reference signal is part of the data corresponding to the reference signal with resource ID 1, and the second part of the first reference signal is also part of the data corresponding to the reference signal with resource ID 1.

[0178] Similarly, if the first reference signal is a PRS, the resource identifier (resource ID) of the first reference signal can be set in the PRS configuration information (PRS-info). The resource identifier (resource ID) of the first part of the first reference signal is the same as the resource identifier (resource ID) of the second part of the first reference signal. For related information, please refer to the explanation of the first reference signal being an SRS. Further details will not be provided again.

[0179] Similarly, the resource identifier (resource ID) in the first part of the second reference signal is the same as the resource identifier (resource ID) in the second part of the second reference signal. For related information, please refer to the relevant description in the first reference signal. Further details will not be provided again.

[0180] In other possible embodiments, in embodiments of the present application, a reference signal generated based on one signal sequence (the signal sequence may correspond to one sequence ID) may be referred to as a reference signal. A first reference signal is used as an example. In embodiments of the present application, the first part and the second part of the first reference signal are two parts of a reference signal generated based on the same signal sequence. In other words, the signal sequence corresponding to the first part of the first reference signal is the same as the signal sequence corresponding to the second part of the first reference signal.

[0181] For example, the first reference signal is SRS, and the first reference signal is,

number

number

[0182] In equation (1),

number

[0183] In this embodiment of the present application, the first part of the first reference signal and the second part of the first reference signal are one

number

[0184] As another example, the first reference signal is PRS, and a sequence of one first reference signal can be represented by equation (2):

number

[0185] In equation (2), the pseudorandom number sequence c(i) contains two m-sequences,

number

[0186] Here, N C = 1600, and the first m-sequence x1(n) is,

number

[0187] Here, n s,f μ is the number of slots, N symb slot is the number of symbols within one slot, and n ID,seq PRS is the sequence ID. The sequence ID can be set by using the configuration information of the first reference signal.

[0188] In this embodiment of the present application, it can be understood that the first part of the first reference signal and the second part of the first reference signal are two parts of the reference signal generated based on one signal sequence (the sequence ID identifier is n ID,seq PRS ). In other words, the signal sequence corresponding to the first part of the first reference signal is the same as the signal sequence corresponding to the second part of the first reference signal. The signal sequence identifier n ID,seq PRS of the first reference signal can be set in the configuration information of the first reference signal. The signal sequence identifiers of both the first part and the second part of the first reference signal may be the signal sequence identifier n ID,seq PRS set in the configuration information.

[0189] (4) Slot and Time domain symbol

[0190] A slot, also called a slot, can be understood as a time slice or time domain resource. A time domain symbol, also called a symbol, can be understood as a time slice or time domain resource. A slot may contain one or more time domain symbols.

[0191] Based on the above, Figure 4 is an example of a schematic flowchart of the AOD determination method according to an embodiment of the present application. To more clearly illustrate the solution provided in the embodiment of the present application, Figure 4 is described in terms of interaction. The method can be performed by a first communication device and a second communication device.

[0192] The first communication device may be a terminal device (for example, terminal device 103 in Figure 1a or Figure 1b, or the terminal device in Figure 1c), or a module, unit, or chip within a terminal device, or a network device (for example, the access network device in Figure 1c), or a module, unit, or chip within a network device. The second communication device may be a terminal device (for example, terminal device 104 or terminal device 105 in Figure 1a, or the terminal device in Figure 1c), or a module, unit, or chip within a terminal device, or a network device (for example, base station 101 or base station 102 in Figure 1b, or the access network device in Figure 1c), or a module, unit, or chip within a network device. The first and second communication devices can be flexibly selected. For example, both the first and second communication devices may be terminal devices (for example, the scenario shown in Figure 1a), or they may be network devices. Alternatively, the first and second communication devices may be a network device and a terminal device, respectively. For example, the first communication device is a network device, and the second communication device is a terminal device. Another example is when the first communication device is a terminal device and the second communication device is a network device (for example, the scenario shown in Figure 1b). For the sake of clarity in the following discussion, an example is used in which the first communication device is a terminal device (for example, the terminal device in Figure 1b) and the second communication device is a network device (the base station in Figure 1b).

[0193] As shown in Figure 4, the AOD determination method includes the following steps.

[0194] S201: The second communication device generates the first reference signal.

[0195] S202: The second communication device transmits a first reference signal to the first communication device using multiple time-domain resources, where two of the multiple time-domain resources used to transmit the first reference signal correspond to two different ports used to transmit the first reference signal.

[0196] S203: The first communication device acquires first setting information for the first reference signal, in which the first setting information includes instruction information for a plurality of time-domain resources used to determine the phase information.

[0197] S204: The first communication device receives a first reference signal and determines multiple first phase information corresponding to multiple time-domain resources used to determine the phase information.

[0198] To facilitate distinction, in this embodiment of the present application, the multiple time-domain resources used by the second communication device to transmit the first reference signal may be referred to as S1 time-domain resources, where S1 is an integer greater than 1. The multiple time-domain resources used by the first communication device to determine phase information are referred to as S2 time-domain resources, where S2 is an integer greater than 1.

[0199] The first configuration information in S203 may include instruction information for S2 time-domain resources. In S204, the first communication device may determine a plurality of first phase pieces of information corresponding to the first reference signal received by S2 time-domain resources.

[0200] There can be multiple possible correspondences between S2 time-domain resources and multiple first-phase information. In a possible implementation, the first communication device can determine one first-phase information based on one or more of the S2 time-domain resources. For example, the first communication device can determine S2 first-phase information corresponding to S2 time-domain resources, and the multiple first-phase information are in one-to-one correspondence with S2 time-domain resources. As another example, the first communication device can determine multiple (may be fewer than S2) first-phase information corresponding to time-domain resources among the S2 time-domain resources. For example, S2 is 8. The first communication device can determine 6 first-phase information corresponding to 8 time-domain resources. For example, the 6 first-phase information may be determined based on signals received at 6 of the 8 time-domain resources. As yet another example, 5 first-phase information may be determined based on signals received at 5 of the 8 time-domain resources, and 1 first-phase information may be determined based on signals received at the remaining 3 of the 8 time-domain resources.

[0201] In S204, the first communication device may receive the entire first reference signal through one port. Alternatively, the first communication device may receive the first reference signal through multiple ports. This is not limited to embodiments of the present application. In this way, the requirement for an AOD determination solution in the hardware of the first communication device is reduced, and the cost of the first communication device can be reduced.

[0202] S2051: The first communication device transmits second phase information, at which time the second phase information is determined based on a plurality of first phase information.

[0203] The first communication device can determine multiple time-domain resources for which phase information needs to be determined based on first configuration information, and determine multiple phase information based on multiple time-domain resources. Thus, the AOD of the reference signal can be further determined based on multiple phase information. Since the present invention can provide a solution for determining AOD based on phase information, it can be seen that there may be one further arbitrary solution when it is necessary to determine the angle used for positioning.

[0204] Further explanation will be given below with reference to Figures 5a and 5b.

[0205] Figure 5a is an example diagram of a possible structure of a communication device. As shown in Figure 5a, the communication device may include one or more radio frequency channels, and each radio frequency channel may include multiple ports. Figure 5a is represented by using a first radio frequency channel 43 and a second radio frequency channel 53. Each radio frequency channel may be connected to one or more ports. In Figure 5a, an example is used in which a port array 44 connected to the first radio frequency channel 43 includes multiple physical ports, and a port array 54 connected to the second radio frequency channel 53 includes multiple physical ports.

[0206] The ports in the port array in Figure 5a may include the antennas in Figure 2. The first radio frequency channel 43 in Figure 5a may include components and modules in the RFFE in Figure 2 (e.g., filters), and further may include components and modules in the RFIC in Figure 2 (e.g., a frequency mixer). The second radio frequency channel 53 in Figure 5a may include components and modules in the RFFE in Figure 2 (e.g., filters), and further may include components and modules in the RFIC in Figure 2 (e.g., a frequency mixer). The baseband subsystem in Figure 5a may be the baseband subsystem in Figure 2. The processor 41 in Figure 5a may be the processor in the baseband subsystem in Figure 2.

[0207] As shown in Figure 5a, in a possible AOD determination solution, the second communication device may transmit multiple positioning reference signals (PRS) corresponding to multiple beams to the first communication device. The first communication device measures the PRS of multiple beams to obtain the RSRP corresponding to each beam. The second communication device or positioning server (e.g., LMF) can then calculate the AOD of the reference signal by referring to the reference signal received power (RSRP) and the base station's transmission beam directivity pattern. In this solution, the AOD is calculated based on the RSRP, and the second communication device typically needs to transmit eight reference signals corresponding to at least eight beams. If the second communication device sets up a small number of radio frequency channels, for example, only one radio frequency channel, it needs to transmit eight reference signals sequentially. It can be seen that the delay in this solution is significant. To improve efficiency, the second communication device may need to set up eight radio frequency channels, so it can transmit eight reference signals corresponding to eight beams simultaneously through eight radio frequency channels. While this solution can improve efficiency, it requires setting up numerous radio frequency channels for the second communication device, making it costly.

[0208] In actual applications, to reduce costs, a small number of radio frequency channels are typically configured in a communication device, but a large number of physical ports are typically configured. For example, in some high-frequency communication devices, only one radio frequency channel may be configured, but that radio frequency channel may be configured with four to eight physical ports. In the case of a communication device with a small number of radio frequency channels, for example, the communication device shown in Figure 5a, the communication device must spend a long time transmitting seven reference signals corresponding to at least eight beams, resulting in long delays.

[0209] In the possible solutions provided in this embodiment of the present application, a switch may be placed between the radio frequency channel and the ports. For a single data transmission, the radio frequency channel does not necessarily perform data transmission through all ports connected to the radio frequency channel, but the switch may select one or more ports from all ports corresponding to all radio frequency channels to perform data transmission. See Figure 5b. Figure 5b shows an example diagram of a communication device obtained by adding a switch to the communication device shown in Figure 5a. As shown in Figure 5b, the first radio frequency channel 43 may be connected to each port in the port array 44 via switch 45. The second radio frequency channel 53 may be connected to each port in the port array 54 via switch 55. Note that either switch 45 or switch 55 may be a logic circuit switch or other component that can control the first radio frequency channel to be selectively connected to or not connected to a port.

[0210] Based on the architecture of the second communication device shown in Figure 5b, in S202, the second communication device may, by using a switch, select the ports that need to be used in the process of transmitting the first reference signal. Thus, the second communication device may sequentially transmit signals through multiple ports connected to a single radio frequency channel. The first communication device obtains multiple first phase information corresponding to at least two of the multiple ports by measurement. Furthermore, the AOD may be calculated by the second communication device or another device (e.g., a positioning server) by referring to the second phase information (the second phase information is determined based on the multiple first phase information) and the interval between ports among the at least two ports.

[0211] As can be seen from the above, in the solution provided in this embodiment of the present application, the corresponding phase information can be calculated at port granularity (port granularity can affect the accuracy of the phase information) in order to obtain AOD. Compared to a solution in which AOD is calculated at radio frequency channel granularity (the accuracy of AOD depends on the number of radio frequency channels), in this embodiment of the present application, the requirement for the number of radio frequency channels on the second communication device side can be reduced if the accuracy of AOD calculation is ensured. Accordingly, the cost of the second communication device can be reduced.

[0212] In possible implementations, in S202, the second communication device may transmit a single first reference signal to the first communication device through multiple ports in multiple time-domain resources. The following uses, for illustrative purposes, the first and second ports of the second communication device as examples, but this does not imply that the second communication device's multiple ports consist of only two ports. The second communication device may further transmit other parts of the first reference signal through ports other than the first and second ports. For example, in S202, the second communication device transmits the first part of the first reference signal in a third time-domain resource through the first port of the multiple ports. The second communication device transmits the second part of the first reference signal in a fourth time-domain resource through the second port of the multiple ports. The first part of the first reference signal is used to determine one of a plurality of first phase information, and the second part of the first reference signal is used to determine another of the plurality of first phase information.

[0213] In S204, the first communication device may receive a first reference signal in multiple time-domain resources and determine multiple first phase information corresponding to the multiple time-domain resources. The following uses a first time-domain resource and a second time-domain resource among the multiple time-domain resources as examples for illustrative purposes; however, this does not imply that the multiple time-domain resources only include two time-domain resources. The first portion of the first reference signal is received in the first time-domain resource, and one of the multiple first phase information is determined based on the first portion of the first reference signal. The first communication device receives a second portion of the first reference signal in the second time-domain resource and determines another of the multiple first phase information based on the second portion of the first reference signal.

[0214] It should be noted that there is no absolute order between S202 and S204, and S202 and S204 may be executed in a cross-order manner. For example, S202 may be executed first, followed by S204. Alternatively, S204 may be executed in the process of executing S202. For example, the step of the first communication device determining one first phase information based on the first part of the first reference signal is performed after the first part of the first reference signal has been received and before the first communication device has received the second part of the first reference signal. Alternatively, the step of the first communication device determining one first phase information based on the first part of the first reference signal may be performed after the second part of the first reference signal has been received. In other words, there is no absolute order between the time indicated by the first time-domain resource and the time indicated by the fourth time-domain resource. The time indicated by the first time-domain resource may be before, after, or equal to the time indicated by the fourth time-domain resource. This is not limited to embodiments of the present application.

[0215] Since the first and second parts of the first reference signal are transmitted by different ports of the second communication device, the first communication device can calculate the launch angle by referencing the phase difference information of the multiple phase information and the distance between the ports after obtaining multiple phase information by measurement based on the signals transmitted by the different ports. Furthermore, since the second communication device transmits different parts of the same reference signal by different ports, the first communication device can determine multiple first phase information by using a single reference signal, thus reducing the number of reference signals used to calculate the launch angle, saving network resources and reducing latency.

[0216] In other possible implementations, in S202, the second communication device may transmit multiple reference signals to the first communication device via multiple time-domain resources through multiple ports, where one port corresponds to one reference signal. The first communication device measures each reference signal and obtains one phase piece of information corresponding to each reference signal. For example, the second communication device transmits one first reference signal via one port. reference Information may be transmitted, and a third reference signal may be transmitted through another port. The first communication device may determine one phase piece based on the received first reference signal and another phase piece based on the received third reference signal. Then, the positioning server (e.g., LMF) may determine the launch angle based on the two phase pieces corresponding to the two reference signals (first reference signal and second reference signal).

[0217] In this embodiment of the present application, there is at least one physical port within the physical ports included in the first port that is different from each of the physical ports included in the second port. Alternatively, there is at least one physical port within the physical ports included in the second port that is different from each of the physical ports included in the first port. Furthermore, the physical ports included in the first port and the physical ports included in the second port may or may not overlap.

[0218] In possible implementations, the first and second ports may have a selective connectivity relationship to the same radio frequency channel. For example, the first and second ports are both Both are ports having a selective connection relationship with the first radio frequency channel. The second communication device transmits the first portion of the first reference signal in the third time-domain resource through the first port connected to the first radio frequency channel. The second communication device transmits the second portion of the first reference signal in the fourth time-domain resource through the second port connected to the first radio frequency channel.

[0219] In other possible embodiments, the second communication device may alternatively transmit the first reference signal through multiple ports of multiple radio frequency channels. For example, the second communication device may transmit a first portion of the first reference signal through a first port of the first radio frequency channel and one or more ports of the second radio frequency channel, and the second communication device may transmit a second portion of the first reference signal through a second port of the first radio frequency channel and one or more ports of other radio frequency channels (e.g., the second radio frequency channel). To further clarify the solution provided in the embodiments of the present application, the first radio frequency channel among the multiple radio frequency channels used to transmit the first reference signal is described in this embodiment of the present application.

[0220] Figure 6 is an example diagram in which the first radio frequency channel 43 of Figure 5b is connected to ports in a port array 44 via a switch 45. In Figure 6, an example in which the first radio frequency channel 43 is connected to eight physical ports is used for illustrative purposes. The eight physical ports are, respectively, port 441, port 442, port 443, port 444, port 445, port 446, port 447, and port 448. For example, referring to Figure 6, the first port may be, for example, port 441, and the second port may be, for example, port 442. As another example, the first ports may be, for example, ports 441 and port 442, and the second ports may be, for example, ports 442 and port 443. As yet another example, the first ports may be, for example, ports 441 and port 442, and the second ports may be, for example, ports 447 and port 448.

[0221] In other possible implementations, the first and second ports may be two ports connected to two radio frequency channels. For example, the first port is the port connected to the first radio frequency channel 43 in Figure 5b, and the second port is the port connected to the second radio frequency channel 53 in Figure 5b.

[0222] In this embodiment of the present application, there may be multiple possible implementations of the correspondence between S1 time-domain resources and ports, for example, implementation a1, implementation a2, implementation a3, and implementation a4 as described below.

[0223] Implementation a1: Two of the S1 time-domain resources used to transmit the first reference signal correspond to two different ports used to transmit the first reference signal.

[0224] Implementation a1 can also be understood as at least two of S1 time-domain resources corresponding to different ports. In this way, the second communication device transmits a first reference signal through at least two different ports, so that the first communication device can measure the signal transmitted through at least two different ports to obtain at least two first phase pieces of information. The at least two first phase pieces of information may correspond to at least one phase difference, so that the launch angle can be determined based on the phase difference. Thus, in the case of a second communication device that includes only one radio frequency channel including at least two ports, positioning can alternatively be performed based on phase pieces of information corresponding to the first reference signal transmitted by the second communication device, which can reduce the hardware requirements of the second communication device in a solution that performs positioning based on phase pieces of information and reduce the cost of the second communication device.

[0225] Implementation a2: One of the multiple ports corresponds to one of the S1 time domain resources.

[0226] In this way, each port is used once during the process in which the second communication device transmits the first reference signal using S1 time-domain resources. In this manner, the second communication device can transmit the first reference signal using as many different ports as possible, and the first communication device can then acquire first phase information corresponding to more different ports. More phase differences can be acquired based on the first phase information corresponding to more different ports. It can be seen that this solution increases the number of phase differences and further improves the accuracy of the firing angle.

[0227] Implementation a3: One of the multiple ports corresponds to multiple time domain resources within S1 time domain resources.

[0228] In this way, one port may be used multiple times in the process of the second communication device transmitting the first reference signal using S1 time-domain resources. In this case, one port may be set as a reference port to provide calibration for the other ports. Furthermore, since ports are reused multiple times, the number of ports required in this solution is reduced, lowering the hardware requirements of the second communication device and reducing the cost of the second communication device.

[0229] Implementation a4: Two adjacent time domain resources within a single time domain resource correspond to two different ports.

[0230] In this way, in the process of transmitting the first reference signal in S202 using S1 time-domain resources, the second communication device needs to change ports after transmitting a signal in one time-domain resource in order to transmit a signal in the next time-domain resource. In this way, the first communication device can obtain two different first phase pieces of information based on the signals transmitted in two adjacent time-domain resources. By using the two different first phase pieces of information, a phase difference can be obtained. If the ports corresponding to every two adjacent time-domain resources are different, the maximum number of phase differences can be obtained, thereby improving the accuracy of the launch angle.

[0231] In this embodiment of the present application, S1 time-domain resources may also have multiple possible implementations. For example, implementations b1, b2, b3, and b4 below are examples of some possible implementations of S1 time-domain resources.

[0232] Implementation b1: Two time-domain resources located within one time-domain resource and corresponding to different ports are separated by at least one time-domain resource unit.

[0233] The second communication device transmits the first reference signal through at least two different ports in order to allow time for port switching during the transmission of the first reference signal, and thus it is within S1 time-domain resources, with the two time-domain resources corresponding to different ports separated by at least one time-domain resource unit. In this way, the second communication device may have time to perform the port switching operation.

[0234] Implementation b2: Two adjacent time-domain resources within a single time-domain resource are separated by at least one time-domain resource unit.

[0235] In this way, if two adjacent time-domain resources within S1 time-domain resources correspond to two different ports, the second communication device may have time to perform a port switching operation between adjacent time-domain resources within S1 time-domain resources.

[0236] Implementation b3: Adjacent time-domain resources within S1 time-domain resources are separated by Q1 time-domain resource units, where Q1 is a positive integer.

[0237] Because this solution is regular, the number of bits occupied by information indicating the interval between time-domain resources within S1 time-domain resources can be further reduced.

[0238] Implementation b4: A time-domain resource unit may consist of one or more time-domain symbols.

[0239] A time-domain resource unit can also be referred to as a resource element (RE). In this way, during the process of the second communication device transmitting the first reference signal, port switching can be performed at the time-domain symbol level, and the first communication device can obtain a plurality of first phase information at the time-domain symbol level. Compared with the solution where the second communication device transmits a plurality of first reference signals and the first communication device obtains one piece of first phase information by measuring each first reference signal, since the first communication device knows the information about the time-domain resources for determining the first phase information, the event of determining one piece of first phase information based on the data received in a plurality of adjacent time-domain symbols can be reduced (because the data received in a plurality of adjacent time-domain symbols can be regarded as one signal by the receiving end and cannot be distinguished). In this way, the first communication device can obtain a plurality of first phase information at the symbol granularity, and then can determine the angle of emission based on the phase information of at least one reference signal. Thereby, the delay of the solution for calculating the angle of emission based on the behavior information can be reduced.

[0240] In a possible implementation, the S1 time-domain resources are the S1 time-domain resources within one slot. The first reference signal may be transmitted together with the data or may be transmitted separately. FIGS. 7a and 7b show examples of diagrams of some possible patterns of the S1 time-domain resources corresponding to the first reference signal.

[0241] As shown in FIG. 7a, the first reference signal and the data (for example, the physical downlink control channel (PDCCH) and / or the demodulation reference signal (DMRS)) can be transmitted in the same slot. As shown in FIG. 7b, the first reference signal is transmitted separately, that is, it cannot be transmitted together with the data (for example, PDCCH and / or DMRS), and the first reference signal can occupy the S1 time-domain resources within the slot.

[0242] As shown in FIGS. 7a and 7b, two adjacent time domain resources among S1 time domain resources are separated by one time domain resource unit. In this way, the second communication device can transmit a signal once at an interval of one time domain resource unit within one slot and perform port switching with the separated time domain resource units.

[0243] Based on the above content, FIGS. 7c and 7d show some possible correspondence examples between S1 time domain resources and ports. These examples are presented by using the ports within the first radio frequency channel shown in FIG. 6 as examples.

[0244] As shown in FIG. 7c, S1 time domain resources are eight time domain symbols within one slot, and every two adjacent time domain symbols are separated by one time domain symbol. The ports corresponding to the eight time domain symbols may be port 441, port 442, port 443, port 444, port 445, port 446, port 447, and port 448 in sequence. In a possible implementation, the ports have port identifiers, and there may be a preset sorting relationship between the port identifiers. For example, the sorting relationship is port 441, port 442, port 443, port 444, port 445, port 446, port 447, and port 448. In a possible implementation, the port switching rule is the same as the preset sorting relationship of the port identifiers. In this way, the complexity of this solution can be reduced.

[0245] As shown in Figure 7d, S1 time-domain resources consist of eight time-domain symbols in one slot, with every two adjacent time-domain symbols separated by one time-domain symbol. The ports corresponding to the eight time-domain symbols may be, in order, ports 441, 442, 441, 443, 441, 444, 441, and 445. In the port switching rule shown in Figure 7d, it can be seen that port 441 is used multiple times. In this case, port 441 can be considered a calibration port, and the first phase information corresponding to the ports following multiple ports 441 is calibrated by referring to multiple first phase information corresponding to multiple ports 441 in order to improve the accuracy of the firing angle. For example, if there is a large difference between the first phase information corresponding to port 441 of the first time-domain symbol and the first phase information corresponding to port 441 of the third time-domain symbol in eight time-domain symbols, the two first phase information corresponding to ports 442 and / or port 443 can be calibrated based on the two first phase information corresponding to port 441, thereby improving the accuracy of the first phase information and thus improving the accuracy of the launch angle.

[0246] The correspondence between S1 time-domain resources and ports may be set in advance, set in advance on the second communication device side, determined by the second communication device, determined by the second communication device through negotiation with the first communication device, or determined by a positioning server (e.g., LMF) and transmitted to the second communication device. Many specific implementations exist, and are not limited to the embodiments of this application.

[0247] Based on the above, Figures 8A and 8B are examples of schematic flowcharts for other AOD determination methods. In this method, an example is used in which the first communication device is a terminal device, the second communication device is a base station, and the positioning server is an LMF. Alternatively, the second communication device may be a terminal device. If the second communication device is a terminal device, the second configuration information may be determined by the second communication device or transmitted to the second communication device by another device (e.g., a base station). As shown in Figures 8A and 8B, the method includes the following steps.

[0248] S801: The second communication device determines the second setting information for the first reference signal.

[0249] In this embodiment of the present application, the second configuration information may include at least one of the following parameters: parameter c1, parameter c2, parameter c3, or parameter c4.

[0250] Parameter c1 is information indicating S1 time-domain resources used to transmit the first reference signal.

[0251] In this embodiment of the present application, for the sake of distinction, information that is included in the second setting information and indicates S1 time-domain resources used to transmit the first reference signal may be called the fourth instruction information.

[0252] The fourth instruction information may include information about the number of time-domain resource units between two of S1 time-domain resources, and / or information about S1 time-domain resources.

[0253] For example, the fourth instruction information may include instruction information regarding the number of time domain resource units between adjacent time domain resources within S1 time domain resources. For example, the fourth instruction information may indicate the following: within one slot, the first reference signal is transmitted once at the interval of one time domain symbol, and the duration for transmitting the first reference signal is one time domain symbol. As another example, the fourth instruction information may indicate the following: within one slot, the first reference signal is transmitted once at the interval of two time domain symbols, and the duration for transmitting the first reference signal is two time domain symbols. If the second setting information includes information regarding the number of time domain resource units between two of S1 time domain resources, the second communication device can determine which S1 time domain resources are used to transmit the first reference signal, so that the first reference signal can be transmitted using S1 time domain resources.

[0254] Information about S1 time-domain resources is as follows: S1 time-domain resource start frame or symbol (indicating the frame or symbol in which the mapping begins execution in the time domain); The number of symbols or slots occupied by S1 time domain resources; or Offset corresponding to S1 time-domain resources (indicating the number of symbols or slots offset by S1 time-domain resources in the current transmission periodicity of the first reference signal) It may include at least one of the following.

[0255] Parameter c2 is information about the frequency domain resource corresponding to the first reference signal.

[0256] The first reference signal may occupy one or more subcarriers in the frequency domain. The frequency domain resources corresponding to two of the S1 time domain resources may be the same. In other possible implementations, the frequency domain resources corresponding to all of the S1 time domain resources may be the same. In this way, the solution becomes simple.

[0257] In another possible implementation, the information regarding the frequency-domain resource corresponding to the first reference signal is as follows: The sequence number of the subcarriers used to transmit the first reference signal (e.g., it may include the sequence number of the subcarriers occupied by the first reference signal in a resource block (RB)); The density of the resource blocks occupied by the first reference signal in the frequency domain (e.g., it may include indication information indicating the number of RBs for transmitting data on the bits in the first reference signal); The bandwidth (which may indicate the number of consecutive physical resource blocks (PRBs) or resource elements (REs) occupied in the frequency domain); or The starting common resource block (CRB) (which may indicate the RB where the mapping starts to be performed in the frequency domain) may include at least one of the above.

[0258] Parameter c3 is information indicating the correspondence between S1 time-domain resources and multiple ports.

[0259] For the correspondence between the S1 time-domain resources and multiple ports, please refer to the above description. For example, the correspondence may be the one in FIG. 7c or FIG. 7d.[[ID=二十]]

[0260] The information indicating the correspondence between the S1 time-domain resources and multiple ports is as follows: The identifiers of the S1 time-domain resources and multiple ports (the identifiers of the multiple ports may appear in the form of an array, and each number may indicate the identifier of one port); or The identifier of the target port switching policy used to transmit the reference signal may include at least one of the above.

[0261] One or more port switching policies for transmitting a reference signal may be pre-set on the second communication device side, and the target port switching policy for transmitting a reference signal is one of the pre-set port switching policies for transmitting a reference signal. The port switching policy for transmitting a reference signal includes information about identifiers of multiple ports corresponding to S1 time-domain resources. The second communication device may determine the target port switching policy to be used to transmit a reference signal based on the identifier of the target port switching policy used to transmit the reference signal, and then determine the identifiers of multiple ports corresponding to S1 time-domain resources.

[0262] Parameter c4 is the transmission period of the first reference signal.

[0263] In a possible implementation, the second communication device may periodically transmit a first reference signal, thereby allowing the first communication device to periodically measure the first reference signal and report the acquired results (second phase information and / or launch angle information corresponding to each first reference signal). In this way, the first communication device can periodically determine its position.

[0264] The transmission period of the first reference signal may represent the time interval during which the second communication device transmits the first reference signal once. The time interval may be one or more symbols, slots, frames, seconds, minutes, hours, etc.

[0265] In other possible implementations, if the first communication device does not need to be positioned periodically, the transmission period does not need to be set in the second configuration information, or the value of the transmission period set in the second configuration information indicates that the second communication device transmits the first reference signal once and does not transmit the first reference signal periodically.

[0266] Furthermore, in S801, the second communication device determines the second configuration information in several ways. For example, the second configuration information may be pre-configured on the second communication device side. As another example, the second communication device may determine the second configuration information based on the hardware conditions of the second communication device. As yet another example, the second communication device may receive the second configuration information transmitted by another device. As yet another example, the second communication device may negotiate with the first communication device to determine the second configuration information.

[0267] S802: The positioning server may send a request for first transmission-reception point (TRP) information to the second communication device, and the first TRP information request is used to request the acquisition of third configuration information.

[0268] A TRP information request may also be called a TRP information request. The positioning server can send a TRP information request to a second communication device by using the NR positioning protocol (NR positioning protocol a, NRPPa).

[0269] S803: The second communication device transmits the first TRP information response to the positioning server, and the first TRP information response includes the third configuration information.

[0270] TRP information response can also be called TRP information response.

[0271] The third configuration information may include at least one of the following parameters: c1, c2, c3, c4, or d. For details regarding parameters c1, c2, c3, and c4, please refer to the above information. Further details will not be provided again. The following describes parameter d.

[0272] Parameter d indicates the port configuration information of the second communication device.

[0273] The port configuration information specified for the second communication device is as follows: Information relating to the number of radio frequency channels of the second communication device (this may be the number of radio frequency channels set by the second communication device, or the number of radio frequency channels used to transmit the first reference signal); Information regarding the number of ports in the second communication device (this may be the number of ports corresponding to one or more radio frequency channels set by the second communication device, or the number of ports used to transmit the first reference signal); Identifier of the port of the second communication device; The spacing between ports of the second communication device (which may be the spacing between two of a plurality of ports corresponding to one or more radio frequency channels set by the second communication device, or the spacing between ports among a plurality of ports used to transmit the first reference signal, or the spacing between ports corresponding to adjacent time-domain resources in S1 time-domain resources); Port array shape corresponding to a port of the second communication device (may be a port array shape corresponding to a radio frequency channel among one or more radio frequency channels set by the second communication device, or may be a port array shape corresponding to a port used to transmit the first reference signal); or Information indicating the port arrangement direction of the second communication device (the port arrangement direction may be, for example, horizontal, vertical, or an angle of inclination). It may include at least one of the following.

[0274] The spacing between ports of the second communication device may be in the form of columns or arrays and may be indicated by values. The units may be meters, centimeters, decimeters, millimeters, micrometers, or nanometers. Alternatively, the spacing may be expressed as a multiple of the wavelength, and may be an integer multiple, a fractional multiple, a decimal multiple, etc. The spacing between multiple ports of the second communication device may be expressed in the form of columns. If the spacing between ports of the second communication device is unique, the spacing between ports of the second communication device may contain only one value.

[0275] If the spacing between ports of the second communication device is not unique, the port identifier may be carried in the port configuration information. The two parameters, namely the port identifier and the spacing between ports, may be combined. For example, the port configuration information may include information indicating that the spacing between port a and port b is half a wavelength.

[0276] The port array shape may be a linear array, a planar array, a circular array, a cylindrical array, etc.

[0277] In possible implementations, when estimating the launch angle information of the first reference signal based on the second phase information, the second communication device may perform further calculations by referring to the port array shape. For example, if the port array shape is a linear array and the second phase information received by the second communication device includes multiple phase difference pieces of information, the launch angles corresponding to the multiple phase difference pieces of information may be understood as angles on a plane. In possible implementations, the second communication device may average the acquired multiple phase difference pieces of information and then estimate the launch angle of the first reference signal based on the averaged phase difference information.

[0278] As another example, if the port array shape is a circular array and the second phase information received by the second communication device includes multiple phase difference information, the launch angles corresponding to the multiple phase difference information may be multiple different angles. In a possible implementation, the second communication device can perform calculations for each phase difference information to obtain multiple launch angle information, and then determine the launch angle of the first reference signal based on the obtained multiple launch angle information.

[0279] The above example is described using an example in which the second communication device estimates the transmission angle of the first reference signal based on the second phase information. In actual use, the first communication device or positioning server may alternatively estimate the transmission angle of the first reference signal based on the second phase information. In this case, the positioning server may obtain the port array shape on the second communication device side by using the third configuration information. Alternatively, the positioning server may transmit the port array shape obtained on the second communication device side to the first communication device side.

[0280] S804: The first communication device sends a request support data message to the positioning server (e.g., LMF). The request support data message may include the identifier of the target cell. The request support data message is used to request the acquisition of first configuration information.

[0281] The identifier of the target cell may be the identifier of the primary cell corresponding to the first communication device. The request assistance data message may also be called request assistance data. The first communication device may send the request assistance data message to a positioning server (e.g., LMF) by using the LTE positioning protocol (LPP).

[0282] S805: The positioning server sends a support data message to the first communication device. The support data message includes the first configuration information.

[0283] The provision assistance data message may also be called provide assistance data. The positioning server may send the provision assistance data message to the first communication device by using LPP.

[0284] In possible implementations, the first configuration information may include at least one of the following parameters: parameter e1, parameter e2, parameter c2, parameter c3, parameter c4, or parameter d. For parameters c2, c3, c4, and d, please refer to the above description. Further details will not be provided again. Parameters e1 and e2 are described separately below.

[0285] Parameter e1 is information that indicates S2 time-domain resources used to determine the phase information.

[0286] In a possible implementation, the information indicating the S2 time-domain resources used to determine the phase information may include a fourth indicating information within parameter c1.

[0287] If the first configuration information includes information about the number of time-domain resource units between two of S1 time-domain resources, the first communication device may determine S2 time-domain resources from which first phase information needs to be acquired, and may determine one first phase information based on a signal received at one of the S2 time-domain resources.

[0288] For example, information indicating S2 time-domain resources used to determine phase information may be information indicating the following: Within one slot, the second communication device transmits a reference signal once at the interval of one time-domain symbol, and the duration for transmitting the reference signal is one time-domain symbol. In this way, in the process of receiving the first reference signal, the first communication device can estimate one first phase information at a time at the interval of one time-domain symbol, and each first phase information is determined based on the signal received at one time-domain symbol. In this way, multiple first phase information corresponding to the first reference signal are obtained.

[0289] As another example, the fourth instruction information may be information indicating the following: within one slot, the reference signal is transmitted once at the interval of two time-domain symbols, and the duration for transmitting the reference signal is two time-domain symbols. In this way, in the process of receiving the first reference signal, the first communication device can estimate one first phase information at a time at the interval of two time-domain symbols, and each first phase information is determined based on the signal received in the two time-domain symbols. In this way, multiple first phase information corresponding to the first reference signal can be obtained.

[0290] S1 time-domain resources are time-domain resources used by the transmitting end of the first reference signal to transmit the first reference signal. For details regarding parameter e1, please refer to the details regarding parameter c1. Further details are not provided here.

[0291] Parameter e2 is the identifier of the second communication device.

[0292] The identifier for the second communication device may be one or more of the following: physical cell index (PCI) and cell global identity (CGI).

[0293] In addition to acquiring the first configuration information by the first communication device in S805, it should be noted that in S203, the first communication device may acquire the first configuration information in multiple ways. For example, the first configuration information may be pre-configured on the second communication device side. As another example, the first communication device may negotiate with the second communication device to determine the first configuration information. As yet another example, the first communication device may receive the first configuration information transmitted by another device.

[0294] S806: The positioning server sends a first location information request message to the first communication device. The first location information request message instructs the first communication device to report the measured values.

[0295] The first location information request message can also be called a request location information message.

[0296] For example, in a possible positioning architecture, the Access and Mobility Management Function (AMF) receives a service request for a terminal device initiated by another network element within the network. The AMF then sends a positioning request for the terminal device to the LMF, which receives the positioning request from the AMF, initiates positioning of the terminal device, and determines the terminal device's location information. After initiating positioning of the terminal device, the LMF may instruct a communication device to transmit a first reference signal and, by using S806, instruct the terminal device to report the measurement.

[0297] S807: The second communication device transmits a first reference signal to the first communication device using multiple time-domain resources based on the second configuration information. Two of the S1 time-domain resources used to transmit the first reference signal correspond to two different ports used to transmit the first reference signal.

[0298] In S807, the second communication device may perform channel calibration on multiple ports used to transmit the first reference signal, thereby initially matching the phases of the multiple ports. Then, the first reference signal is transmitted by the multiple ports. In this way, the accuracy of the phase difference obtained based on the first reference signal transmitted by the multiple ports can be improved, and the accuracy of the firing angle can be improved.

[0299] Furthermore, if the second configuration information includes parameter c2, in a possible implementation, the second communication device may determine a frequency domain resource corresponding to the first reference signal based on the second configuration information and transmit the first reference signal using that frequency domain resource.

[0300] If the second configuration information includes parameter c3, in a possible implementation, for a time-domain resource among S1 time-domain resources, the second communication device may, based on the second configuration information, determine the port corresponding to that time-domain resource as the port used when a signal is transmitted in that time-domain resource, and then transmit a signal in that time-domain resource through that port.

[0301] For other related content of S807, please refer to the related content of S202. S807 may be a possible implementation of S202.

[0302] S808: The first communication device receives a first reference signal and determines a plurality of first phase information corresponding to S2 time-domain resources.

[0303] S809: The first communication device transmits a first message providing positioning information to the positioning server.

[0304] The first message providing positioning information includes second phase information (parameter f1) and may further include at least one of parameters f2, f3, or f4. At least one of parameters f2, f3, or f4 may be reported together with parameter f1 or separately. This is not limited to embodiments of the present application.

[0305] In a possible implementation, in S806, the location information request message further instructs the first communication device to report second phase information. In this way, the first communication device determines the second phase information to report after S808 based on the location information request message.

[0306] Parameter f1 is the second phase information.

[0307] In this embodiment of the present application, the second phase information includes at least one of the following parameters: parameter f1-1, parameter f1-2, or parameter f1-3.

[0308] Parameter f1-1 is at least two of several first phase information pieces.

[0309] In a possible implementation, if the second phase information reported by the first communication device includes at least two first phase information items, the first communication device may report at least two first phase information items in the form of a column (or array).

[0310] For example, the order of at least two first phase information within the second phase information corresponds to the order of time-domain resources corresponding to at least two first phase information. In this case, the first communication device may sort the multiple first phase information based on the order in which the signals used to estimate the first position information were received and report the sorted multiple first phase information.

[0311] As another example, the order of at least two first phase information items within a second phase information item matches the order of the port identifiers corresponding to at least two first phase information items. In this example, there may be a pre-set sorting relationship between multiple ports used by the second communication device to transmit the first reference signal. For example, there may be a pre-set ordering relationship between the ports corresponding to the first radio frequency channel 43 in Figure 6, in the order of ports 441, 442, 443, 444, 445, 446, 447, and 448. Based on the port corresponding to the received signal, the first communication device may determine the correspondence between the multiple first phase information items determined based on the received signal and the port, and transmit the multiple first phase information items based on the ordering relationship of the port identifiers.

[0312] As another example, the first communication device may further resort multiple acquired first phase information based on the sequential relationship of port identifiers and report multiple resorted first phase information. For example, the ports used by the second communication device to transmit the first reference signal are, in order, port 441, port 442, port 441, port 443, port 441, port 444, port 441, and port 445. In this case, the first communication device may sequentially acquire the following: first phase information corresponding to port 441, first phase information corresponding to port 442, first phase information corresponding to port 441, first phase information corresponding to port 443, first phase information corresponding to port 441, first phase information corresponding to port 444, first phase information corresponding to port 441, and first phase information corresponding to port 445. Furthermore, the first communication device may re-sort the first phase information acquired in a plurality of sequential order, and the sorted first phase information may be one or more first phase information corresponding to port 441, first phase information corresponding to port 442, first phase information corresponding to port 443, first phase information corresponding to port 444, and first phase information corresponding to port 445.

[0313] In other possible implementations, if the second phase information reported by the first communication device includes at least two first phase information items, the first communication device may report at least two first phase information items in multiple reporting methods, and may report one or more first phase information items each time.

[0314] In a possible implementation, the first communication device may determine one first phase information for each of the S2 time-domain resources. For one of the multiple first phase information, that first phase information is determined based on an arbitrary propagation path that the signal received in the time-domain resource corresponding to that first phase information takes to arrive at the first communication device. The propagation path may be a normal path or an additional path, for example, a first path, a direct path, a reflected path, or a strongest path. For example, the first communication device may estimate the first phase information based on the first path of the signal received in each of the S2 time-domain resources.

[0315] The parameters f1-2 are at least one phase difference information corresponding to multiple first phase information.

[0316] Phase difference information can be determined based on two first phase pieces of information. For example, one phase difference piece of information can be obtained by subtracting the phases indicated by the two first phase pieces of information.

[0317] In possible implementations, if the second phase information reported by the first communication device includes multiple phase difference information, the first communication device may report the multiple phase difference information in the form of a column (or array).

[0318] For example, the order of at least two phase difference information within the second phase information corresponds to the order of time-domain resources corresponding to the phase difference information. In this case, the first communication device may sort the multiple first phase information based on the reception order of the signals used to estimate the first phase information, sequentially calculate the phase difference information corresponding to two adjacent first phase information, and then report the multiple acquired phase difference information having a sort relationship.

[0319] As another example, the order of at least two phase difference information within the second phase information matches the order of the port identifiers corresponding to the phase difference information. In this example, there may be a pre-set sorting relationship between multiple ports used by the second communication device to transmit the first reference signal. For example, there may be a pre-set ordering relationship between the ports corresponding to the first radio frequency channel 43 in Figure 6, in the order of ports 441, 442, 443, 444, 445, 446, 447, and 448. The first communication device may determine the correspondence between multiple first phase information determined based on the received signal and the ports, determine multiple first phase information based on the ordering relationship of the port identifiers, and further calculate the phase difference information corresponding to two adjacent first phase information sequentially, and then report the multiple acquired phase difference information with sorting relationships.

[0320] For example, the ports used by the second communication device to transmit the first reference signal are, in order, ports 441, 442, 443, 444, 445, 446, 447, and 448. In this case, the first communication device may sequentially acquire the following: first phase information corresponding to port 441, first phase information corresponding to port 442, first phase information corresponding to port 443, first phase information corresponding to port 444, first phase information corresponding to port 445, first phase information corresponding to port 446, first phase information corresponding to port 447, and first phase information corresponding to port 448. Furthermore, the first communication device may sequentially acquire the following: phase difference information corresponding to ports 442 and 441, phase difference information corresponding to ports 444 and 443, phase difference information corresponding to ports 446 and 445, and phase difference information corresponding to ports 448 and 447. Furthermore, the first communication device may report the phase difference information in a column (or array) format.

[0321] As another example, the ports used by the second communication device to transmit the first reference signal are, in order, ports 441, 442, 441, 443, 441, 444, 441, and 445. In this case, the first communication device may sequentially acquire the following: first phase information (information a1) corresponding to port 441, first phase information (information a2) corresponding to port 442, first phase information (information a3) corresponding to port 441, first phase information (information a4) corresponding to port 443, first phase information (information a5) corresponding to port 441, first phase information (information a6) corresponding to port 444, first phase information (information a7) corresponding to port 441, and first phase information (information a8) corresponding to port 445. Furthermore, the first communication device can sequentially acquire phase difference information corresponding to ports 442 and 441 (acquired based on information a and information a2), phase difference information corresponding to ports 443 and 441 (acquired based on information a3 and information a4), phase difference information corresponding to ports 444 and 441 (acquired based on information a5 and information a6), and phase difference information corresponding to ports 445 and 441 (acquired based on information a7 and information a8). Furthermore, the first communication device can report the phase difference information in a column (or array) manner. In this solution, port 441 can be used as a reference port, and the multiple first phase information corresponding to port 441 can be used for channel calibration, thereby further improving the accuracy of the firing angle.

[0322] In other possible implementations, if the second phase information reported by the first communication device includes at least two phase difference pieces of information, the first communication device may report at least two phase difference pieces of information in multiple reporting methods, and may report one or more phase difference pieces of information each time.

[0323] Parameters f1-3 represent the average information of multiple phase difference data.

[0324] The average information of multiple phase difference data may be obtained by averaging the multiple phase difference data, or by averaging the multiple phase difference data using weighting. Several specific methods exist, and this is not limited to the embodiments of this application.

[0325] Parameter f2 is the reliability information of the second phase information received by the second communication device.

[0326] The reliability information of the second phase information includes standard deviation information and / or variance information corresponding to multiple first phase information sets.

[0327] Parameter f3 is the first instruction information received by the second communication device. The first instruction information indicates the correspondence between the parameter in the second phase information and the identifier of the port used to transmit the first reference signal.

[0328] If the first launch angle information includes multiple first phase information, 1 The instruction information may indicate the port identifier corresponding to each of the multiple first phase information pieces. If the first launch angle information includes multiple phase difference information pieces, 1 The instruction information may indicate the port identifier corresponding to each of the multiple phase difference information items. The port corresponding to one phase difference information item is the port corresponding to two first phase information items, and the phase difference information is calculated based on those two first phase information items.

[0329] The first instruction information may include instruction information indicating a measurement method for measuring the first reference signal by the first communication device. Multiple measurement methods exist. For example, the first communication device may sequentially acquire multiple first phase information based on the order in which ports are switched during the transmission of the first reference signal by the second communication device, and then calculate two adjacent first phase information from the sequence of acquired first phase information to obtain multiple phase difference information that has a sort relationship.

[0330] As another example, the first communication device may sequentially acquire a plurality of first phase information based on the order in which ports are switched during the transmission of a first reference signal by the second communication device, then re-sort the acquired first phase information based on a pre-set sort relationship of port identifiers, and then calculate two adjacent first phase information from the sequence of re-sorted first phase information to obtain a plurality of phase difference information with a sort relationship.

[0331] Parameter f4 is the identifier of the second communication device.

[0332] The identifier of the second communication device may be one or more of the physical cell index (PCI) and cell global identity (CGI). The identifier of the second communication device can indicate a specific device that transmits a reference signal, and based on this, the second phase information acquired by the first communication device is determined.

[0333] S810: The positioning server sends a positioning information request message to the second communication device, and the positioning information request message includes second phase information (parameter f1), and may also include at least one of parameter f2, parameter f3, or parameter f4.

[0334] Accordingly, the second communication device receives a positioning information request message from the LMF.

[0335] The LMF can send a positioning information request message to the second communication device by using NRPPa. The positioning information request message can be replaced by TRP information request information, a positioning information request message, or a measurement request message.

[0336] It should be noted that the first communication device may receive reference signals distributed by multiple second communication devices. To provide a clearer description of the solution provided in this embodiment of the Application, one second communication device is described in detail in this embodiment of the Application. If multiple second communication devices exist, refer to the solutions for the second communication devices described in this embodiment of the Application for other solutions on the second communication device side. Furthermore, the LMF may alternatively feed back positioning information request messages to each second communication device. For each second communication device, the second communication device may include measurements obtained by measurement based on the reference signal of the second communication device.

[0337] S811: The second communication device determines information regarding the first reference signal based on the acquired second phase information.

[0338] The second communication device may further receive at least one of the parameters f2, f3, or f4. If the second communication device further receives parameter f2, it can know the reliability of the launch angle determined by the second communication device and can feed back the reliability of the launch angle to the positioning server. If the second communication device further receives parameter f3, it can determine the port corresponding to the parameter in the received second phase information based on parameter f3, so that the launch angle can be determined based on the interval between the port and the second phase information. The calculation is performed so that the accuracy of the launch angle can be improved. If the second communication device further receives parameter f4, it can check the received parameter based on parameter f4 to determine whether the received second phase information is determined based on the first reference signal transmitted by the second communication device.

[0339] If the second phase information includes multiple first phase information, the second communication device may calculate the phase difference information from the multiple first phase information and further determine the launch angle of the first reference signal based on the phase difference information. If the second phase information includes phase difference information or average information of phase difference information, the second communication device may calculate the launch angle of the first reference signal based on the phase difference information or average information of phase difference information. There are multiple methods for calculating the launch angle of the first reference signal based on phase difference information. This embodiment of the present application provides an example of a possible method. The method for determining the launch angle of the first reference signal based on average information of phase difference information is similar to this method and details are not described again.

[0340] Figure 9 is an example of a diagram for determining the transmission angle of a first reference signal based on phase difference information. In Figure 9, an example is used in which the second communication device is a base station 101 and the first communication device is a terminal device 103. As shown in Figure 9, base station 101 transmits signal 1 through port 441 and base station 101 transmits signal 2 through port 442. There is a gap between ports 441 and 442, which is represented by d in Figure 9. Signal 1 may be the first part of the first reference signal, and signal 2 may be the second part of the first reference signal. Accordingly, terminal device 103 receives signals 1 and 2. The terminal device may receive signals 1 and 2 through one port, or it may receive signals 1 and 2 through multiple ports. To better illustrate the relationship between the transmission angle and other parameters, the distance between the base station and the terminal device is much greater than the distance between ports 441 and 442, so the signal transmission between the base station and the terminal device can be considered a far-field scenario. Therefore, in Figure 9, the transmission paths of signal 1 and signal 2 are shown, for example, by using parallel lines. Referring to Figure 9, the relationship between the launch angle and the phase difference information can be determined, and the launch angle of the first reference signal can be calculated using equation (3):

number

[0341] In equation (3), d is the distance between port 441 and port 442.

[0342] θ is the launch angle of the first reference signal.

[0343] ψ is the phase difference corresponding to signals 1 and 2 on the first communication device side.

[0344] λ is the wavelength of the first reference signal.

[0345] π is a constant and represents the ratio of a circle's circumference to its diameter (pi).

[0346] S812: The second communication device transmits a positioning information response message to the positioning server, and the positioning information response message includes the transmission angle information of the first reference signal transmitted by the second communication device.

[0347] Accordingly, the positioning server receives a positioning information response message from the second communication device. In possible implementations, the positioning server may receive multiple launch angle information from multiple second communication devices.

[0348] The second communication device can send a positioning information response message to the LMF using NRPPa. The positioning information response message is a TRP information response. message This can be replaced with measurement response messages, etc.

[0349] S813: The positioning server determines the position information of the first communication device based on the transmission angle information received by multiple second communication devices.

[0350] Figure 10 is a diagrammatic example of an AOD-based positioning solution according to an embodiment of the present application. In Figure 10, an example is used for presentation in which the second communication device is a base station and the first communication device is a terminal device. As shown in Figure 10, at least two second communication devices (base stations) can transmit a reference signal to the first communication device (terminal device 103). For each second communication device, the first communication device can determine second phase information corresponding to the reference signal transmitted by the second communication device. Furthermore, the first communication device transmits the second phase information.

[0351] Furthermore, the second communication device calculates AODs corresponding to the reference signals based on the second phase information, for example, AOD1 corresponding to the reference signal transmitted to the terminal device 103 by the base station 101, and AOD2 corresponding to the reference signal transmitted to the terminal device 103 by the base station 102.

[0352] Furthermore, the positioning server may calculate the terminal device's position by referring to AODs (AOD1 and AOD2) corresponding to at least two reference signals. For example, based on the AODs, the positioning server may use the base station's position as a starting point to form multiple rays with an angular deflection amount equal to the AOD, and the intersection of these rays is the terminal device's position.

[0353] Figures 8A and 8B show only examples of possible implementation solutions. In specific implementations, other possible implementations may exist. For example, the step of determining the launch angle information corresponding to each second communication device based on the second phase information of each second communication device may be performed by the positioning server instead. In this way, the amount of signaling exchanged between the positioning server and each second communication device can be reduced, latency can be reduced, and the positioning speed of the first communication device can be improved.

[0354] In this embodiment of the present application, the positioning server is a network element that can be configured to initiate positioning at the first communication device, and may be, for example, a location management function (LMF) in an NR system, or a network element that can initiate positioning at the first communication device in another system. In this embodiment of the present application, an example is used in which the positioning server is an LMF.

[0355] Based on the above, Figures 11A and 11B are examples of schematic flowcharts of other AOD determination methods according to embodiments of the present invention. Figures 11A and 11B further include a third communication device, which may be a serving base station. This is basically similar to the solution provided in Figures 8A and 8B. The difference is that in the solution provided in Figures 11A and 11B, steps S1101 to S1105 may be performed after S808.

[0356] S1101: The first communication device transmits a second message to the third communication device, and at this time, the second message may include second phase information corresponding to the second communication device.

[0357] Accordingly, the third communication device can receive second phase information from the first communication device.

[0358] In a feasible implementation, the first communication device may transmit the second message to the third communication device by using radio resource control (RRC).

[0359] In possible implementations, the first communication device may further transmit at least one of the parameters f2, f3, or f4 to the third communication device. For relevant details, please refer to the above description, as further details are not provided here.

[0360] In other possible implementations, the third communication device may receive from the first communication device a plurality of second phase information corresponding to a plurality of second communication devices.

[0361] S1102: The positioning server sends port configuration information for multiple second communication devices to the third communication device. The port configuration information for one second communication device includes the spacing between ports.

[0362] The positioning server may send a third message to a third communication device using NRPPa, in which case the third message includes port setting information for multiple second communication devices. The third message may be a TRP information request message, a positioning information request message, a measurement request message, etc.

[0363] Accordingly, the third communication device receives port setting information for multiple second communication devices from the positioning server.

[0364] In the case of a second communication device among multiple second communication devices in S1102, please refer to the above explanation of parameter d for the port setting information of that second communication device transmitted to the third communication device by the positioning server. Further details are not described again here.

[0365] In other possible implementations, in S1102, the positioning server may further transmit at least one of parameters c1, c2, c3, or c4 to the third communication device. See the above description for the relevant details of parameters c1, c2, c3, and c4. Further details are not provided here again.

[0366] In other possible implementations, in S1102, the positioning server may further transmit at least one of the parameters e1, e2, c2, c3, or c4 to the third communication device. See the above description for the relevant content of parameters e1, e2, c2, c3, or c4. Further details are not provided here again.

[0367] Step S1102 may be executed before S1101, for example, after S803 and before S804.

[0368] S1103: The third communication device determines the launch angle information corresponding to the multiple second communication devices based on the second phase information corresponding to the multiple second communication devices and the port setting information of the multiple second communication devices.

[0369] S1104: The third communication device transmits multiple launch angle information corresponding to multiple second communication devices to the positioning server.

[0370] Accordingly, the positioning server receives multiple launch angle information from multiple second communication devices.

[0371] In S1104, the third communication device may send a message to the positioning server using NRPPa, the message containing multiple launch angle information, and the message is a TRP information response. message This may be called a positioning information response message or a measurement response message.

[0372] S1105: The positioning server determines the position information of the first communication device based on the transmission angle information of multiple second communication devices.

[0373] For details regarding S1105, please refer to the related content in S813. Further details will not be provided here.

[0374] As can be seen from the above, in the solution provided in Figures 11A and 11B, the positioning server does not need to distribute the second phase information corresponding to each second communication device to each second communication device. The first communication device uniformly transmits the second phase information corresponding to each second communication device to the third communication device. The third communication device then calculates the launch angle information for multiple second communication devices by referring to the port setting information of the second communication devices, and then transmits the launch angle information for multiple second communication devices to the positioning server. When the third communication device is a serving base station, the speed at which the first communication device reports the second phase information to the third communication device is faster than the speed at which the first communication device reports the second phase information to the positioning server. Furthermore, since the positioning server does not need to transmit each second phase information separately to each second communication device, the speed at which the first communication device is positioned can be increased.

[0375] Figures 11A and 11B show only examples of possible implementation solutions. In a specific implementation, other possible implementations may exist. For example, the port configuration information of each second communication device may be transmitted to the third communication device by the positioning server, or transmitted to the third communication device by each second communication device, or transmitted to the third communication device by the first communication device. For example, the port configuration information may be transmitted together with the second phase information in S1101.

[0376] Based on the above, Figure 12 is an example of a schematic flowchart of another AOD determination method according to an embodiment of the present invention. This is essentially similar to the solution provided in Figure 4. The difference is that in the solution provided in Figure 12, S2052 may be performed further after S204.

[0377] S2052: The first communication device transmits the first launch angle information.

[0378] In this embodiment of the present application, the first launch angle information includes at least one of the following parameters: parameter f5, parameter f6, or parameter f7.

[0379] Parameter f5 is information about at least one launch angle corresponding to multiple first phase information.

[0380] At least one launch angle piece is determined based on multiple first phase pieces and the spacing between ports used to transmit the first reference signal. For details on how the launch angle piece is determined based on multiple first phase pieces, please refer to the above description. Further details are not provided here.

[0381] In a possible implementation, if the first launch angle information reported by the first communication device includes multiple launch angle information, the first communication device may report the multiple launch angle information in the form of a column (or array).

[0382] For example, the order of multiple launch angle information within a first launch angle information corresponds to the order of time-domain resources corresponding to multiple first phase information. In this case, the first communication device may sort the multiple first phase information based on the reception order of the signals used to estimate the first phase information, sequentially calculate phase difference information corresponding to two adjacent first phase information, then sequentially acquire launch angle information based on each phase difference information, and then report the multiple acquired launch angle information having a sort relationship.

[0383] As another example, the order of multiple launch angle information within the first launch angle information corresponds to the order of the port identifiers corresponding to multiple first phase information. In this example, there may be a pre-set sort relationship between multiple ports used by the second communication device to transmit the first reference signal. For example, there is a pre-set order relationship between the ports corresponding to the first radio frequency channel 43 in Figure 6, in the order of ports 441, 442, 443, 444, 445, 446, 447, and 448. The first communication device may determine the correspondence between multiple first phase information determined based on the received signal and the port, determine the order of multiple first phase information based on the order relationship of the port identifiers, and further calculate phase difference information corresponding to two adjacent first phase information, sequentially acquire launch angle information based on each phase difference information, and then report multiple acquired launch angle information having a sort relationship.

[0384] For example, the ports used by the second communication device to transmit the first reference signal are, in order, port 441, port 442, port 443, port 444, port 445, port 446, port 447, and port 448. In this case, the first communication device may sequentially acquire the following: first phase information corresponding to port 441, first phase information corresponding to port 442, first phase information corresponding to port 443, first phase information corresponding to port 444, first phase information corresponding to port 445, first phase information corresponding to port 446, first phase information corresponding to port 447, and first phase information corresponding to port 448. Furthermore, the first communication device may sequentially acquire the following: phase difference information corresponding to ports 442 and 441, phase difference information corresponding to ports 444 and 443, phase difference information corresponding to ports 446 and 445, and phase difference information corresponding to ports 448 and 447. Furthermore, the first communication device sequentially acquires launch angle information based on each phase difference information, and then reports multiple acquired launch angle information items that have a sorting relationship.

[0385] As another example, the ports used by the second communication device to transmit the first reference signal are, in order, ports 441, 442, 441, 443, 441, 444, 441, and 445. In this case, the first communication device may sequentially acquire the following: first phase information (information a1) corresponding to port 441, first phase information (information a2) corresponding to port 442, first phase information (information a3) corresponding to port 441, first phase information (information a4) corresponding to port 443, first phase information (information a5) corresponding to port 441, first phase information (information a6) corresponding to port 444, first phase information (information a7) corresponding to port 441, and first phase information (information a8) corresponding to port 445. Furthermore, the first communication device can sequentially acquire the following: phase difference information corresponding to ports 442 and 441 (acquired based on information a1 and information a2), phase difference information corresponding to ports 443 and 441 (acquired based on information a3 and information a4), phase difference information corresponding to ports 444 and 441 (acquired based on information a5 and information a6), and phase difference information corresponding to ports 445 and 441 (acquired based on information a7 and information a8). Furthermore, the first communication device sequentially acquires launch angle information based on each phase difference information, and then reports a plurality of acquired launch angle information having a sort relationship. In this solution, port 441 may be used as a reference port, and the plurality of first phase information corresponding to port 441 may be used for channel calibration, thereby further improving the accuracy of the launch angle.

[0386] In other possible implementations, if the first launch angle information reported by the first communication device includes at least two launch angle pieces of information, the first communication device may report at least two launch angle pieces of information in multiple directional ways and may report one or more launch angle pieces of information each time.

[0387] Parameter f6 is at least one first launch angle average information corresponding to multiple first phase information.

[0388] At least one first average launch angle information is determined based on at least two of the at least one launch angle information.

[0389] The first average launch angle information can be obtained by averaging multiple launch angle information, or by averaging multiple launch angle information through weighting. Several specific methods exist, and are not limited to the embodiments of this application.

[0390] Parameter f7 is at least one second launch angle average information corresponding to multiple first phase information.

[0391] At least one second launch angle average information is determined based on the average information of phase difference information corresponding to multiple first phase information and port spacing average information.

[0392] For information on how to obtain the average of multiple phase difference data, please refer to the above. Further details are not provided here. The port spacing average is determined based on the average spacing between multiple ports used to transmit the first reference signal.

[0393] In the solution shown in Figure 12, it can be seen that the first communication device can calculate the first transmission angle information based on the distance between ports on the second communication device side used to transmit the first reference signal. Note that the first communication device can obtain the distance between ports. If the distance cannot be obtained, the calculation can be performed based on a pre-set distance value. For example, the pre-set distance value may be half a wavelength.

[0394] It should be noted that both S2051 and S2052 may be implemented using a single solution. For example, the measurement reported by the first communication device includes both first launch angle information and second phase information. In other possible implementations, either S2051 or S2053 may be selected for use. For example, the measurement reported by the first communication device includes first launch angle information but does not include second phase information. As another example, the measurement reported by the first communication device does not include first launch angle information but includes second phase information.

[0395] Based on the above, Figures 13A and 13B are examples of schematic flowcharts of other AOD determination methods according to embodiments of the present invention. These are basically similar to the solutions provided in Figures 8A and 8B. The difference is that in the solutions provided in Figures 13A and 13B, S1201 and S1202 are performed after S808.

[0396] S1201: The first communication device transmits a fourth message supplying positioning information to the positioning server. The fourth message supplying positioning information includes first launch angle information and may further include at least one of the following parameters: parameter g1, parameter g2, or parameter g3.

[0397] Parameter g1 is the reliability information for the first launch angle information.

[0398] The reliability information for the first launch angle information includes standard deviation information and / or variance information for multiple launch angle information corresponding to multiple first phase information.

[0399] Parameter g2 is the second instruction information. The second instruction information indicates the correspondence between the parameters in the first launch angle information and the identifier of the port used to transmit the first reference signal.

[0400] If the first launch angle information includes multiple launch angle pieces, the second instruction information may indicate the port identifier corresponding to each of the multiple launch angle pieces. The port corresponding to one launch angle piece is the port corresponding to the phase difference information, and the launch angle information is calculated based on the phase difference information.

[0401] The second instruction information may include instruction information indicating a measurement method for measuring the first reference signal by the first communication device. Multiple measurement methods exist. For details, please refer to the relevant description of parameter f3. Further details are not provided here.

[0402] Parameter g3 is the identifier of the second communication device.

[0403] For parameter g3, please refer to the related information for parameter f4. Further details will not be provided here.

[0404] S1202: The positioning server determines the location information of the first communication device based on the received first transmission angle information corresponding to multiple second communication devices.

[0405] In the solutions shown in Figures 13A and 13B, the first communication device may calculate the first launch angle information based on the spacing between ports on the second communication device side used to transmit the first reference signal. The first communication device can obtain the spacing between ports from the positioning server by using S805, and the positioning server can obtain the spacing between ports by using S803. In other possible implementations, if the first communication device does not obtain the spacing between ports in the second communication device used to transmit the first reference signal from the other device side, the calculation may be performed based on a pre-set port spacing value. For example, the pre-set port spacing value may be half a wavelength.

[0406] In the implementation shown in Figures 13A and 13B, in S806, the location information request message may further instruct the first communication device to report launch angle information. In this way, the first communication device calculates the first launch angle information based on the location information request message after S808 and reports the first launch angle information.

[0407] In the solutions shown in Figures 13A and 13B, the fourth message supplying positioning information does not have to include parameter f1 (second phase information), nor does it have to include parameters f2, f3, and f4. In other possible embodiments, the fourth message supplying positioning information may alternatively include parameter f1 (second phase information), or one or more of parameters f2, f3, or f4. This is not limited to the embodiments of the present invention.

[0408] Based on the above, Figure 14 is an example of a schematic flowchart of an AOA determination method according to an embodiment of the present invention. To more clearly describe the solution provided in the embodiment of the present invention, Figure 14 is described from an interaction perspective. The method can be carried out by a first communication device and a second communication device.

[0409] The AOA determination solution provided in Figure 14 in the embodiments of the present application may be used in conjunction with the AOD determination solutions (Figures 4, 8A and 8B, 11A and 11B, 12, and 13A and 13B) or independently. This is not limited to the embodiments of the present application.

[0410] The first communication device may be a terminal device (for example, terminal device 103 in Figure 1a or Figure 1b, or terminal device in Figure 1c), or a module, unit, or chip within a terminal device, or a network device (for example, access network device in Figure 1c), or a module, unit, or chip within a network device. The second communication device may be a terminal device (for example, terminal device 104 or terminal device 105 in Figure 1a, or terminal device in Figure 1c), or a module, unit, or chip within a terminal device, or a network device (for example, base station 101 or base station 102 in Figure 1b, or access network device in Figure 1c), or a module, unit, or chip within a network device. The first and second communication devices can be flexibly selected. For further details, please refer to the relevant descriptions in Figures 8A and 8B. Further details will not be described again.

[0411] As shown in Figure 14, the AOA determination method includes the following steps.

[0412] S1401: The first communication device transmits the second reference signal.

[0413] In S1401, the first communication device may transmit the entire first reference signal through a single port. Alternatively, the first communication device may transmit the second reference signal synchronously through multiple ports. In this way, the requirement for an AOA decision solution in the hardware of the first communication device can be reduced to lower the cost of the first communication device.

[0414] S1402: The second communication device receives the second reference signal and determines multiple third phase information corresponding to the second reference signal received by multiple time-domain resources.

[0415] S1403: The second communication device determines the arrival angle of the second reference signal based on multiple third phase information.

[0416] To facilitate distinction, in the embodiments of the present application, the multiple time-domain resources used to determine phase information on the second communication device side may also be referred to as S3 time-domain resources, where S3 is an integer greater than 1.

[0417] There can be multiple possible correspondences between S3 time-domain resources and multiple third-phase information. In a possible implementation, the second communication device may determine one third-phase information based on one or more of the S3 time-domain resources. For example, the second communication device may determine S3 third-phase information corresponding to S3 time-domain resources, and the multiple third-phase information may correspond one-to-one with the S3 time-domain resources. As another example, the second communication device may determine multiple (fewer than S3) third-phase information corresponding to time-domain resources among the S3 time-domain resources. For example, S3 is 8. The second communication device may determine 6 third-phase information corresponding to 8 time-domain resources. For example, the 6 third-phase information may be determined based on signals received at 6 of the 8 time-domain resources. As yet another example, 5 third-phase information may be determined based on signals received at 5 of the 8 time-domain resources, and one third-phase information may be determined based on signals received at the remaining 3 time-domain resources among the 8 time-domain resources.

[0418] In a possible implementation, the second communication device may determine one third phase information based on one of S3 time-domain resources. For a given third phase information among multiple third phase information, the third phase information is determined based on an arbitrary propagation path for the signal received at the time-domain resource corresponding to that third phase information to arrive at the second communication device. The propagation path may be a normal path or an additional path, for example, a first path, a direct path, a reflected path, or a strongest path. For example, the second communication device may estimate the third phase information based on the first path of the signal received at each of the S3 time-domain resources.

[0419] The second communication device determines multiple third phase information based on multiple time-domain resources. Therefore, the AOA of the reference signal can be further determined based on multiple third phase information. The present invention can provide a solution for determining the AOA based on phase information, thereby demonstrating that one further arbitrary solution may exist when it is necessary to determine the angle used for positioning.

[0420] To further explain the advantageous effects that may be brought about by the embodiments of the present invention, the following will be explained with reference to Figures 5a and 5b.

[0421] As shown in Figure 5a, in a possible AOA determination solution, the first communication device may transmit a sounding reference signal (SRS) to the second communication device. The second communication device receives the SRS simultaneously across multiple radio frequency channels and obtains phase information corresponding to the multiple radio frequency channels. The second communication device then calculates the AOA of the reference signal based on the phase information and the port spacing corresponding to the radio frequency channels. In this solution, the second communication device typically needs to configure multiple radio frequency channels. If the second communication device configures only a few radio frequency channels, for example, only one radio frequency channel, this solution cannot be used. Furthermore, in actual applications, to reduce costs, a small number of radio frequency channels are usually configured by the communication device, while a large number of physical ports are typically configured.

[0422] However, in the possible solutions provided in this embodiment of the present application, a switch may be placed between the radio frequency channel and the ports. For a single data transmission, the radio frequency channel does not necessarily transmit data through all ports connected to the radio frequency channel; the switch may select one or more ports from all ports corresponding to the radio frequency channel to transmit data. For the structure of the second communication device, please refer to Figure 5b.

[0423] In S1402, in a possible implementation, the second communication device receives the first portion of the second reference signal in the fifth time-domain resource and determines one of a plurality of third phase information based on the first portion of the second reference signal. The second communication device receives the second portion of the second reference signal in the sixth time-domain resource and determines one of a plurality of third phase information based on the second portion of the second reference signal.

[0424] In other words, in S1402, the second communication device may, by using a switch, select the ports that need to be used in the process of transmitting the first reference signal. Thus, the second communication device may sequentially receive signals through a plurality of ports connected to a single radio frequency channel. The second communication device obtains a plurality of third phase information corresponding to at least two of the plurality of ports by measurement. Furthermore, the AOA may be calculated by the second communication device or another device (e.g., a positioning server) by referring to the plurality of third phase information and the interval between the ports among the at least two ports.

[0425] As can be seen from the above, in the possible solution provided in this embodiment of the present application, the corresponding phase information can be calculated at port granularity (port granularity may affect the accuracy of the phase information) in order to obtain AOA. Compared to a solution in which AOA is calculated at radio frequency channel granularity (the accuracy of AOA depends on radio frequency channel granularity), in this embodiment of the present application, the requirement for the number of radio frequency channels on the second communication device side can be reduced if the accuracy of AOA calculation is ensured. Accordingly, the cost of the second communication device can be reduced.

[0426] In S1402, the second communication device receives the first portion of the second reference signal in the fifth time-domain resource via the third port. The second communication device receives the second portion of the second reference signal in the sixth time-domain resource via the fourth port.

[0427] The step in which the second communication device determines one third phase information based on the first portion of the second reference signal may be performed after the first portion of the second reference signal has been received and before the second communication device receives the second portion of the second reference signal, or after the second communication device has received the second portion of the second reference signal.

[0428] Since the first and second portions of the second reference signal are received through different ports of the second communication device, after obtaining multiple phase pieces of information by measurement based on the signals received through the different ports, the second communication device can calculate the angle of arrival by referring to the phase difference information of the multiple phase pieces of information and the distance between the ports. Furthermore, since the second communication device receives different portions of the same reference signal through different ports, the number of reference signals used to calculate the angle of arrival can be reduced, thereby saving network resources and lowering latency.

[0429] In this embodiment of the present application, the "third port" is a logical port and may include one or more physical ports. The "fourth port" is a logical port and may include one or more physical ports. There is at least one physical port within the physical ports included in the third port that is different from each of the physical ports included in the fourth port. Alternatively, there is at least one physical port within the physical ports included in the fourth port that is different from each of the physical ports included in the third port. The physical ports included in the third port and the physical ports included in the fourth port may or may not overlap. For related information concerning the "third port" and the "fourth port," please refer to the related descriptions of the "first port" and the "second port." Further details are not described again here.

[0430] In possible implementations, the third and fourth ports may have selective connectivity to the same radio frequency channel. For example, both the third and fourth ports may have selective connectivity to the second radio frequency channel. The second communication device receives the first portion of the second reference signal in the fifth time-domain resource through the third port connected to the second radio frequency channel.The second communication device receives the second portion of the second reference signal in the sixth time-domain resource through the fourth port connected to the second radio frequency channel.

[0431] In other possible implementations, the second communication device may alternatively receive the second reference signal through multiple ports of multiple radio frequency channels. For example, the second communication device may receive the second reference signal through a third port of the second radio frequency channel and through one or more ports of the third radio frequency channel. 2nd The second communication device may receive a first portion of the reference signal, and through the fourth port of the second radio frequency channel and one or more ports of other radio frequency channels (e.g., the third radio frequency channel), 2nd A second portion of the reference signal may be received. To further illustrate the solution provided in the embodiments of the present application, a second radio frequency channel among a plurality of radio frequency channels used to receive the second reference signal is described in this embodiment of the present application.

[0432] Figure 15 is an example diagram in which the second radio frequency channel 53 of Figure 5b is connected to ports in a port array 54 via a switch 55. In Figure 15, an example is used for illustrative purposes in which the second radio frequency channel 53 is connected to eight physical ports. The eight physical ports are, respectively, ports 541, 542, 543, 544, 545, 546, 547, and 548. For example, referring to Figure 15, the third port may be, for example, port 541, and the fourth port may be, for example, port 542. As another example, the third port may be, for example, ports 541 and 542, and the fourth port may be, for example, ports 542 and 543. As yet another example, the third port may be, for example, ports 541 and 542, and the fourth port may be, for example, ports 547 and 548 in the port array 54.

[0433] In other possible implementations, the third and fourth ports may be two ports connected to two radio frequency channels. For example, the third port is a port connected to the first radio frequency channel, and the fourth port is a port connected to the second radio frequency channel.

[0434] In other possible implementations, a second communication device may receive multiple second reference signals from a first communication device via multiple ports on multiple time-domain resources. For example, the second communication device may receive one second reference signal through one port and determine one third phase information based on the received second reference signal, and the second communication device may receive another second reference signal through another port and determine another third phase signal based on the received second reference signal. The second communication device may then determine a launch angle based on at least two third phase information.

[0435] In this embodiment of the present application, there may be multiple possible implementations of the correspondence between S3 time-domain resources and ports, for example, implementations h1, h2, h3, and h4 as shown below.

[0436] Implementation h1: Two of the multiple time-domain resources (which may also be called S3 time-domain resources) used to receive the second reference signal correspond to two different ports used to receive the second reference signal.

[0437] Implementation h1 can also be understood as at least two of the S3 time-domain resources corresponding to different ports. In this way, the second communication device receives the second reference signal through at least two different ports, so that the second communication device can measure the signal received through at least two different ports to obtain at least two third phase pieces of information. The at least two third phase pieces of information may correspond to at least one phase difference, and then the angle of arrival can be determined based on the phase difference. Thus, in the case of a second communication device having only one radio frequency channel with at least two ports, positioning can alternatively be performed. 2nd This may be performed based on phase information corresponding to a second reference signal received by the communication device, thereby reducing the hardware requirements of the second communication device in a solution that performs positioning based on phase information, and lowering the cost of the second communication device. Furthermore, in the case of a second communication device with a small number of radio frequency channels, the solution provided in this embodiment of the present application can further improve the accuracy of positioning the first communication device.

[0438] Implementation h2: One of the multiple ports corresponds to one of the S3 time domain resources.

[0439] In this way, during the process of receiving the second reference signal with S3 time-domain resources, each port is used only once. In this manner, the second communication device can receive the second reference signal through as many different ports as possible, and then the second communication device can acquire third phase information corresponding to more different ports. More phase differences can be acquired based on the third phase information corresponding to more different ports. It can be seen that this solution increases the number of phase differences and further improves the accuracy of the angle of arrival.

[0440] Implementation h3: One of several ports corresponds to multiple time domain resources within S3 time domain resources.

[0441] In this way, one port may be used multiple times during the process in which the second communication device receives the second reference signal using S3 time-domain resources. In this case, one port may be set as a reference port to calibrate the other ports. Furthermore, since ports are reused multiple times, the number of ports required in this solution can be reduced, lowering the hardware requirements for the second communication device and reducing the cost of the second communication device.

[0442] Implementation h4:S3 Two adjacent time domain resources correspond to two different ports.

[0443] In this way, during the process of receiving the second reference signal in S1402 with S3 time-domain resources, the second communication device needs to change ports after receiving a signal in one time-domain resource in order to receive the signal in the next time-domain resource. 2nd A communication device may acquire two different third phase information based on signals received at two adjacent time-domain resources. The phase difference can be obtained by using the two different third phase information. If the ports corresponding to each pair of adjacent time-domain resources are different, the maximum number of phase differences can be obtained, thereby obtaining the phase difference. angle of arrival The accuracy can be improved.

[0444] In this embodiment of the present application, S3 time-domain resources may also have multiple possible implementations. For example, the following implementations i1, i2, i3, and i4 are examples of some possible implementations of S3 time-domain resources.

[0445] Implementation i1: Two time-domain resources located within S3, corresponding to different ports, are separated by at least one time-domain resource unit.

[0446] The second communication device receives the second reference signal through at least two different ports, so as to allow time for port switching during the process of receiving the second reference signal, it is within S3 time-domain resources, and the two time-domain resources corresponding to different ports are separated by at least one time-domain resource unit. In this way, the second communication device may have time to perform the port switching operation.

[0447] Implementation i2: Two adjacent time-domain resources among S3 time-domain resources are separated by at least one time-domain resource unit.

[0448] In this way, when two adjacent time-domain resources among S3 time-domain resources correspond to two different ports, the second communication device may have time to perform a port switching operation between adjacent time-domain resources among S3 time-domain resources.

[0449] Implementation i3: Adjacent time-domain resources among S3 time-domain resources are separated by Q2 time-domain resource units, where Q2 is a positive integer.

[0450] Because this solution is regular, the number of bits occupied by information indicating S3 time-domain resources can be further reduced.

[0451] Implementation i4: A time-domain resource unit may consist of one or more time-domain symbols.

[0452] For a relevant explanation of the time-domain resource unit, please refer to the above. In implementation i4, port switching may be performed at the time-domain symbol level during the process in which the second communication device receives the second reference signal, and the second communication device may acquire multiple third phase information at the time-domain symbol level. Compared to a solution in which the second communication device receives multiple second reference signals and acquires one third phase information by measuring each second reference signal, in this embodiment of the present application, the second communication device knows information about the time-domain resource for determining the third phase information, so the number of events in which one third phase information is determined based on data received at multiple adjacent time-domain symbols can be reduced (because data received at multiple adjacent time-domain symbols can be considered as one signal by the receiving end and cannot be distinguished). In this way, 2nd The communication device can acquire multiple third-party phase information at symbol granularity and then determine the angle of arrival based on the phase information of at least one reference signal. This reduces the technical difficulty of calculating the angle of arrival based on phase information and also reduces the delay of solutions that calculate the angle of arrival based on behavioral information.

[0453] In a feasible implementation, S3 time-domain resources are located within one slot. S3 This is a time-domain resource. The second reference signal may be transmitted with the data or separately. For the relationship between the second reference signal and data transmission, please refer to the relationship between the first reference signal and data transmission, for example, the relationship between the first reference signal and data transmission shown in Figures 7a and 7b. Further details are not described here again.

[0454] For the correspondence between S3 time domain resources and ports, please refer to the correspondence between S1 time domain resources and ports, for example, the example of the correspondence between S1 time domain resources and ports shown in Figures 7c and 7d.

[0455] Based on the above, Figures 16A and 16B are examples of schematic flowcharts for other AOA determination methods. In these examples, the first communication device is a terminal device, the second communication device is a base station, and the positioning server is an LMF (Local Mobile Facility). 16 A and Figure 16 As shown in B, the method includes the following steps.

[0456] S1601: The second communication device determines the fourth setting information for the second reference signal.

[0457] In this embodiment of the present application, the fourth configuration information may include at least one of the following parameters: parameter j1, parameter j2, parameter j3, or parameter j4.

[0458] Parameter j1 is information indicating S3 time-domain resources.

[0459] Information indicating S3 time-domain resources may include information about the number of time-domain resource units between two of the S3 time-domain resources, and / or information about the S3 time-domain resources. S3 time-domain resources may also be called multiple time-domain resources used to determine multiple third-phase information.

[0460] For example, information indicating S3 time-domain resources may include information indicating the number of time-domain resource units between adjacent time-domain resources among the S3 time-domain resources. For example, information indicating S3 time-domain resources may include information indicating the following: in one slot, the second reference signal is received once at the interval of one time-domain symbol (or more time-domain symbols), and the duration for receiving the second reference signal is one time-domain symbol (or more time-domain symbols). If the fourth configuration information includes information regarding the number of time-domain resource units between two of the S3 time-domain resources, the second communication device can determine which S3 time-domain resources are used to receive the second reference signal, thereby allowing the second reference signal to be received at the S3 time-domain resources.

[0461] Parameter j2 is information about the frequency domain resource corresponding to the second reference signal.

[0462] The second reference signal may occupy one or more subcarriers in the frequency domain. The frequency domain resources corresponding to two of the S3 time domain resources may be the same. In other possible implementations, the frequency domain resources corresponding to all of the S3 time domain resources may be the same. In this way, the solution may be simple.

[0463] For information regarding frequency domain resources corresponding to the second reference signal, please refer to the information regarding frequency domain resources corresponding to the first reference signal. Further details are not provided here.

[0464] Parameter j3 is information indicating the correspondence between S3 time-domain resources and multiple ports.

[0465] Information indicating the correspondence between S3 time domain resources and multiple ports may include at least one of the following contents: S3 time-domain resources and multiple port identifiers (the multiple port identifiers may appear in the form of an array, where each number may represent a single port identifier), or The identifier of the target port switching policy used to receive the reference signal.

[0466] One or more port switching policies for receiving a reference signal may be pre-set on the second communication device side, and the target port switching policy for receiving a reference signal is one of the pre-set port switching policies for receiving a reference signal. The port switching policy for receiving a reference signal includes information about identifiers of multiple ports corresponding to S3 time-domain resources. The second communication device may determine the target port switching policy to be used to receive a reference signal based on the identifier of the target port switching policy used to receive the reference signal, and then determine the identifiers of multiple ports corresponding to S3 time-domain resources.

[0467] Parameter j4 is the transmission period of the second reference signal.

[0468] In a possible implementation, the first communication device may periodically transmit a second reference signal, thereby causing the second communication device to periodically measure the second reference signal in order to periodically position the first communication device.

[0469] The transmission period of the second reference signal is determined by the first communication device. 2nd This may indicate the time interval between transmissions of a reference signal. The time interval may be one or more symbols, slots, frames, seconds, minutes, hours, etc.

[0470] In other possible implementations, if the first communication device does not need to be positioned periodically, the transmission period does not need to be set in the fourth configuration information, or the value of the transmission period set in the fourth configuration information indicates that the first communication device transmits the second reference signal once and does not transmit the second reference signal periodically.

[0471] Furthermore, there are several methods by which the second communication device determines the fourth configuration information. Specifically, these methods may be similar to the methods used to determine the second configuration information. Details are not described again here.

[0472] S1602: The positioning server may send a second TRP information request to the second communication device, in which case the second TRP information request is used to request the acquisition of fifth configuration information.

[0473] The positioning server can send a second TRP information request to the second communication device by using the NR positioning protocol (NR positioning protocol a, NRPPa).

[0474] S1603: The second communication device transmits the second TRP information response to the positioning server, and at this time, the second TRP information response includes the fifth configuration information.

[0475] The second TRP information response can also be called the TRP information response.

[0476] The fifth configuration information may include at least one of the following parameters: j1, j2, j3, or d. For details regarding parameters j1, j2, j3, or d, please refer to the above information. Further details will not be provided again.

[0477] S1604: The positioning server sends a capability request message to the first communication device, which is used to query whether the first communication device supports the transmission of the second reference signal.

[0478] In a possible implementation, the positioning server may send a capability request message to the first communication device by using LPP.

[0479] S1605: The first communication device sends a capability response message to the positioning server, indicating that the first communication device supports the transmission of the second reference signal.

[0480] S1606: The positioning server sends a reference signal setting request to the third communication device, and at this time, the reference signal setting request is used to request the third communication device to send reference signal setting information to the first communication device.

[0481] The positioning server may send a reference signal setting request to the third communication device after receiving a message from the first communication device indicating that the first communication device supports the transmission of the second reference signal. If the positioning server receives a message from the first communication device indicating that the first communication device does not support the transmission of the second reference signal, the procedure may terminate, or the first communication device may be positioned by another positioning method.

[0482] The reference signal configuration information may include time-domain resources and / or frequency-domain resources of the second reference signal. In possible implementations, the positioning server may propose the time-domain resources and / or frequency-domain resources of the second reference signal based on the configuration of the second communication device (e.g., information in the fifth configuration information) and transmit the proposal to the third communication device.

[0483] S1607: The third communication device transmits sixth configuration information to the first communication device, in which case the sixth configuration information may include time-domain resources and / or frequency-domain resources of the second reference signal.

[0484] The third communication device may transmit sixth configuration information to the first communication device based on the positioning server's proposal.

[0485] In possible implementations, the time-domain resource of the second reference signal included in the sixth configuration information may include parameter k1. The sixth configuration information may further include the following parameter k2.

[0486] Parameter k1 is information indicating S4 time-domain resources used by the first communication device to transmit the second reference signal.

[0487] In a possible implementation, the information indicating S4 time-domain resources may include information about the number of time-domain resource units between two of the S4 time-domain resources, and / or information about the S4 time-domain resources.

[0488] If the sixth configuration information includes information about the number of time-domain resource units between two of the S4 time-domain resources, the first communication device may determine the S4 time-domain resources to which the second reference signal should be transmitted.

[0489] For example, information indicating S4 time-domain resources may be information indicating the following: In one slot, the first communication device transmits a reference signal once at the interval of one time-domain symbol, and the duration for which the reference signal is transmitted is one time-domain symbol () or multiple time-domain symbols. In this way, 2nd In the process of transmitting the reference signal, the first communication device once per time-domain symbol interval 2nd It can transmit a reference signal, and its lifespan is one symbol (or more symbols).

[0490] Note that the S4 time-domain resources may be segments of consecutive time-domain resources, or they may be S4 time-domain resources that include an interval. The distribution rule for the S4 time-domain resources may be the same as the distribution rule for the S3 time-domain resources. For example, two adjacent time-domain resources among the S4 time-domain resources may be separated by a single time-domain symbol.

[0491] Parameter k2 is the identifier of the second communication device.

[0492] For the identifier of the second communication device, please refer to the information above. Further details will not be provided again here.

[0493] Please note that the first communication device receives the sixth configuration information in multiple ways. For details, please refer to the method for obtaining the first configuration information. Details will not be described again here.

[0494] S1608: The positioning server sends a second location information request message to the second communication device, instructing the communication device to report the measured values.

[0495] The second location information request message transmitted by the positioning server to the second communication device may include instruction information for the measurement method. This instruction information may instruct the second communication device to receive the second reference signal using a port switching method, measure multiple parts of the second reference signal separately, and obtain multiple third phase information.

[0496] S1609: The first communication device transmits the second reference signal.

[0497] The first communication device may transmit a second reference signal over S4 time-domain resources. In S807, the first communication device may transmit a second reference signal over consecutive segments of time-domain resources, or it may transmit a second reference signal over intervals of several time-domain resources. For example, the first communication device may transmit a second reference signal once over the interval of one time-domain symbol, with a duration of one or more symbols.

[0498] The step in S1609, in which the first communication device transmits the second reference signal, may be performed before S1608.

[0499] S1610: The second communication device receives the second reference signal and determines a plurality of third phase pieces of information corresponding to the received second reference signal using S3 time-domain resources.

[0500] In S808, the second communication device may perform channel calibration on multiple ports used to receive the second reference signal, thereby ensuring that the phases of the multiple ports are initially consistent. The second reference signal is then received through the multiple ports. In this way, the accuracy of the determined angle of arrival can be improved.

[0501] S1611: The second communication device determines the angle of arrival information based on multiple third phase information.

[0502] The second communication device can calculate a plurality of third phase information to acquire phase difference information, and further determine the arrival angle of the second reference signal based on the phase difference information. There are multiple methods for calculating the arrival angle of the second reference signal based on the phase difference information. This embodiment of the present application provides an example of a possible method.

[0503] Figure 17 is an example of a diagram for determining the arrival angle of a second reference signal based on phase difference information. As shown in Figure 17, the second communication device receives signal 3 through port 541 and signal 4 through port 542. Signal 3 may be the first part of the second reference signal, and signal 4 may be the second part of the second reference signal. Referring to Figure 17, the relationship between the arrival angle and the phase difference information can be determined, and the arrival angle of the first reference signal can be calculated using equation (4):

number

[0504] In equation (4), d is the distance between port 541 and port 542.

[0505] θ is the angle of arrival of the second reference signal.

[0506] ψ is the phase difference corresponding to signals 3 and 4 on the second communication device side.

[0507] λ is the wavelength of the third reference signal.

[0508] π is a constant and represents the ratio of a circle's circumference to its diameter (pi).

[0509] In possible implementations, the phase difference between signals 3 and 4, as determined by the first communication device, may consist of two parts: one part is the phase difference between two ports introduced when the second communication device transmits signals 3 and 4 through two ports each, and the other part is the phase difference introduced by the time consumed to perform port switching in the process of the second communication device transmitting signals 3 and 4. Phase changes with time. Therefore, the part of the phase difference introduced by the duration consumed to perform port switching in the process of the second communication device transmitting signals 3 and 4 can be determined based on that duration (for example, the phase difference corresponding to the duration can be calculated by using (t × (2πc / λ)), where × represents multiplication, t represents the duration, c represents the speed of light, λ is the wavelength of the signal, and π is the multiplier, referring to pi). In this way, the first communication device can remove the phase difference introduced due to port switching from the measured phase difference between signal 3 and signal 4, thereby making the acquired phase difference information more accurate.

[0510] S1612: The second communication device transmits the angle of arrival information to the positioning server.

[0511] Accordingly, the positioning server receives multiple arrival angle information from multiple second communication devices.

[0512] The second communication device can transmit angle of arrival information to the LMF by using NRPPa.

[0513] S1613: The positioning server determines the position information of the first communication device based on the arrival angle information received from multiple second communication devices.

[0514] The method by which the positioning server determines the position information of the first communication device based on multiple arrival angle information is the same as the method by which the position information of the first communication device is determined based on multiple launch angle information. Further details will not be described again.

[0515] Figures 8A and 8B show only examples of possible implementation solutions. In specific implementations, other possible implementations may exist. For example, the step of determining the angle of arrival information corresponding to each second communication device based on the third phase information of each second communication device may be performed by a positioning server instead.

[0516] In the embodiments of this application, when a network element (e.g., network element A) receives information from another network element (e.g., network element B), it may mean that network element A receives information directly from network element B, or that network element A receives information from network element B via another network element (e.g., network element C). When network element A receives information from network element B via network element C, network element C can transmit the information transparently or process the information, for example, by adding the information to another message for transmission, or by screening the information and sending only the information obtained through screening to network element A. Similarly, when network element A transmits information to network element B in the embodiments of this application, it may mean that network element A transmits information directly to network element B, or that network element A transmits information to network element B via another network element (e.g., network element C).

[0517] The terms “system” and “network” may be used synonymously in embodiments of this application. “At least one” means one or more, and “multiple” means two or more. “And / or” describes an association between related objects and indicates that three relationships may exist. For example, A and / or B could mean: A only exists, both A and B exist, and B only exists, where A and B may be singular or plural. The letter “ / ” generally represents an “or” relationship between related objects. At least one of the following items or a similar expression refers to any combination of these items, including any combination of singular or plural items. For example, at least one of a, b, or c could mean: a, b, c, a and b, b and c, or a, b and c, where a, b, and c may be singular or plural.

[0518] Furthermore, unless otherwise stated, the ordinal numbers such as "first" and "second" as used in the embodiments of this application are intended to distinguish between multiple objects rather than to limit the order, chronological order, priority, or importance of multiple objects.

[0519] The above message names are merely examples. As communication technology evolves, any of the above message names may change. However, regardless of how the message name changes, the message falls within the scope of protection of this application, provided that the meaning of the message remains the same as the meaning of the message in this application.

[0520] In accordance with the method described above, Figure 18 is a diagram of the structure of a communication device according to an embodiment of the present invention. As shown in Figure 18, the communication device may be a first communication device, a second communication device, or a third communication device, or it may be a chip or circuit, for example, a chip or circuit that may be located in the first communication device, a chip or circuit that may be located in the second communication device, or a chip or circuit that may be located in the third communication device.

[0521] The communication device 1801 includes a processor 1802 and a transceiver 1803.

[0522] Furthermore, the communication device 1801 may include a memory 1804. In the figure, the memory 1804 is represented by a dashed line, further indicating that the memory is optional.

[0523] Furthermore, the communication device 1801 may further include a bus system. The processor 1802, memory 1804, and transceiver 1803 may be connected via the bus system.

[0524] It should be understood that processor 1802 may be a chip. For example, processor 1802 may be a field programmable gate array (FPGA), an application-specific integrated circuit (ASIC), a system on a chip (SoC), a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), a microcontroller unit (MCU), a programmable logic device (PLD), or other integrated chip.

[0525] In the implementation process, the steps of the method described above may be completed by using hardware integrated logic circuits within the processor 1802 or by instructions in the form of software. The steps of the method disclosed with reference to embodiments of the present application may be performed and achieved directly by using a hardware processor, or by using a combination of hardware and software modules within the processor 1802. The software modules may reside in mature storage media of the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. The storage media is located in memory 1804. The processor 1802 reads information from memory 1804 and, in combination with the processor hardware, completes the steps of the method.

[0526] Note that the processor 1802 in the embodiments of this application may be an integrated circuit chip and may have signal processing capabilities. In the implementation process, the steps of the above method embodiments may be carried out by using hardware integrated logic circuits within the processor or instructions in the form of software. The processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. The methods, steps, and logic block diagrams disclosed in embodiments of this application may be implemented or executed. The general-purpose processor may be a microprocessor, or the processor may be any conventional processor, etc. The steps of the methods disclosed with reference to embodiments of this application may be performed and achieved directly by a hardware decoding processor, or may be performed and achieved by using a combination of hardware and software modules within the decoding processor. The software modules may reside in mature storage media of the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. The storage medium is located in memory, and the processor reads the information from memory and combines it with the processor's hardware to complete the steps of the process.

[0527] It can be understood that the memory 1804 in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include a volatile memory or a non-volatile memory. For a relevant description of the memory in this embodiment of the present application, please refer to the above. Further details are not described again here.

[0528] If the communication device 1801 is the first communication device, the processor 1802 is configured to receive the first reference signal, determine a plurality of first phase information corresponding to the plurality of time-domain resources, and transmit second phase information and / or first launch angle information, with the first phase information being determined based on the signal received by one of the plurality of time-domain resources, and the second phase information being determined based on the plurality of first phase information, and the first arrival angle information being determined based on the plurality of first phase information.

[0529] If the communication device 1801 is the second communication device, the processor 1802 is configured to generate a first reference signal via the transceiver 1803 and transmit the first reference signal to the first communication device using multiple time-domain resources. Two of the multiple time-domain resources correspond to two different ports used to transmit the first reference signal.

[0530] If the communication device 1801 is a third communication device, the processor 1802 is configured to receive a plurality of first launch angle information through the transceiver 1803, determine one of the plurality of launch angle information based on a plurality of first phase information determined by the first communication device, determine the plurality of first phase information based on a first reference signal, and determine the position information of the first communication device based on the plurality of first launch angle information.

[0531] If the communication device 1801 is a second communication device, in other possible implementations, the processor 1802 is configured to receive a second reference signal through the transceiver 1803, determine a plurality of third phase information received in a plurality of time-domain resources corresponding to the second reference signal, and determine the angle of arrival of the second reference signal based on the plurality of third phase information.

[0532] For concepts, descriptions, detailed descriptions, and other steps relating to the communication devices used in the technical solutions provided in the embodiments of this application, please refer to the descriptions of the methods or other embodiments. Further details are not described again here.

[0533] Following the method described above, Figure 19 shows the structure of a communication device according to an embodiment of the present invention. As shown in Figure 19, the communication device 1901 may include a communication interface 1903 and a processor 1902. Furthermore, the communication device 1901 may include a memory 1904. In the figure, the memory 1904 is dashed, further indicating that the memory is optional. The communication interface 1903 is configured to input and / or output information. The processor 1902 is configured to execute a computer program or instruction such that the communication device 1901 implements the method on the first communication device side in any one of the relevant solutions shown in Figure 4, Figures 8A and 8B, Figures 11A and 11B, Figure 12, Figures 13A and 13B, Figure 14, or Figures 16A and 16B; or the communication device 1901 implements the method on the second communication device side in any one of the relevant solutions shown in Figure 4, Figures 8A and 8B, Figures 11A and 11B, Figure 12, Figures 13A and 13B, Figure 14, or Figures 16A and 16B; or the communication device 1901 implements the method on the third communication device side in any one of the relevant solutions shown in Figure 4, Figures 8A and 8B, Figures 11A and 11B, Figure 12, Figures 13A and 13B, Figure 14, or Figures 16A and 16B. In this embodiment of the present application, the communication interface 1903 may implement the solution implemented by the transceiver 1803 in Figure 18, the processor 1902 may implement the solution implemented by the processor 1802 in Figure 18, and the memory 1904 may implement the solution implemented by the memory 1804 in Figure 18. Further details are not described again here.

[0534] Based on the embodiments and the same concepts described above, Figure 20 is a diagram of a communication device according to an embodiment of the present application. As shown in Figure 20, the communication device 2001 may be a first communication device, a second communication device, or a third communication device, or it may be a chip or circuit, for example, a chip or circuit that can be placed in the first communication device, the second communication device, or the third communication device.

[0535] The communication device 2001 includes a processing unit 2002 and a communication unit 2003. Furthermore, the communication device 2001 may or may not include a storage unit 2004. In the figure, the storage unit 2004 is represented by a dashed line, further indicating that the memory is optional.

[0536] The communication unit 2003 is configured to input and / or output information. The processing unit 2002 is configured to execute a computer program or instruction so that the communication device 2001 implements the method on the first communication device side in any one of the relevant solutions shown in Figures 4, 8A and 8B, 11A and 11B, 12, 13A and 13B, 14, or 16A and 16B, or the communication device 2001 implements the method on the second communication device side in any one of the relevant solutions shown in Figures 4, 8A and 8B, 11A and 11B, 12, 13A and 13B, 14, or 16A and 16B, or the communication device 2001 implements the method on the third communication device side in any one of the relevant solutions shown in Figures 4, 8A and 8B, 11A and 11B, 12, 13A and 13B, 14, or 16A and 16B. In this embodiment of the present application, the communication unit 2003 may implement the solution implemented by the transceiver 1803 in Figure 18, the processing unit 2002 may implement the solution implemented by the processor 1802 in Figure 18, and the storage unit 2004 may implement the solution implemented by the memory 1804 in Figure 18. Further details are not described again here.

[0537] The present application further provides a computer program product according to the method provided in the embodiments of the present application. The computer program product includes computer program code or instructions. When the computer program code or instructions are executed by a computer, the computer can perform the method in any one of the embodiments shown in Figures 4, 8A and 8B, 11A and 11B, 12, 13A and 13B, 14, or 16A and 16B.

[0538] In accordance with the methods provided in embodiments of the present application, the present application further provides a computer-readable storage medium that stores program code. When the program code or instructions are executed by a computer, the computer can perform the method in any one of the embodiments shown in Figures 4, 8A and 8B, 11A and 11B, 12, 13A and 13B, 14, or 16A and 16B.

[0539] The present application further provides a chip system according to the method provided in the embodiments of the present application. The chip system may include a processor. The processor is coupled to memory and may be configured to perform the method in any one of the embodiments shown in Figures 4, 8A and 8B, 11A and 11B, 12, 13A and 13B, 14, or 16A and 16B. Optionally, the chip system further includes memory. The memory is configured to store computer programs (which may also be called code or instructions). The processor is configured to call computer programs from memory and execute computer programs, thereby allowing the device incorporating the chip system to perform the method in any one of the embodiments shown in Figures 4, 8A and 8B, 11A and 11B, 12, 13A and 13B, 14, or 16A and 16B.

[0540] The present application further provides a system according to the method provided in the embodiments of the present application. The system includes one or more first communication devices and one or more second communication devices, and may further include a third communication device.

[0541] All or part of the embodiments described above may be implemented by software, hardware, firmware, or any combination thereof. When software is used to implement the embodiments, all or part of the embodiments may be implemented in the form of a computer program product. A computer program product includes one or more computer instructions. When the computer instructions are loaded and executed by a computer, all or part of the procedures or functions according to the embodiments of the present application are generated. The computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, optical fiber, or digital subscriber line (DSL)) or wirelessly (e.g., infrared, radio waves, or microwaves). The computer-readable storage medium may be any useful medium accessible to a computer, or a data storage device such as a server or data center that incorporates one or more useful media. Useful media may include magnetic media (e.g., floppy disks, hard disks, or magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), and semiconductor media (e.g., solid-state disks (SSDs)).

[0542] Please note that some parts of this patent application document contain content protected by copyright. Except for copies made of patent documents or records of patent documents held at the Japan Patent Office, the copyright holder reserves their copyright.

[0543] The second and first communication devices in the above-described apparatus embodiment correspond to the second and first communication devices in the method embodiment. The corresponding modules or units perform the corresponding steps. For example, a communication unit (transceiver) performs the receiving step or the transmitting step in the method embodiment, and steps other than the transmitting and receiving steps may be performed by a processing unit (processor). For the functions of a particular unit, please refer to the corresponding method embodiment. One or more processors may be present.

[0544] As used herein, terms such as “component,” “module,” and “system” are used to refer to computer-related entities, hardware, firmware, combinations of hardware and software, software, and running software. For example, a component may 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. As can be represented by the use of diagrams, a computing device and an application running on a computing device may be a component. One or more components may reside in a process and / or an execution thread, and components may be located on one computer and / or distributed between two or more computers. For example, components may communicate by using local and / or remote processes, and on the basis of signals, for example, one or more data packets (e.g., data from two components communicating with other components in a local or distributed system, and / or data across a network such as the Internet communicating with other systems by using signals).

[0545] Those skilled in the art will notice that the illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein may be implemented by electronic hardware or by a combination of computer software and electronic hardware. Whether the function is performed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may implement the described function using different methods for each specific application, but it should not be conceivable that the implementation would exceed the scope of this application.

[0546] For the convenience and brevity of this description, and so that those skilled in the art can clearly understand, please refer to the corresponding processes in the method embodiments for detailed operating processes of the above systems, apparatus, and units. Further details are not described here again.

[0547] It should be understood that in some embodiments provided herein, the disclosed systems, apparatus, and methods may be implemented in other ways. For example, the apparatus embodiments described are merely illustrative. For example, the division into units is merely a logical functional division, and other divisions may be used in actual implementation. For example, multiple units or components may be coupled or integrated with other systems, or some functions may be ignored or not performed. Furthermore, the mutual coupling, direct coupling, or communication connection indicated or discussed may be implemented through some interface. Indirect coupling or communication connection between apparatus or units may be implemented in electrical, mechanical, or other forms.

[0548] Units described as separate parts may or may not be physically separated, and parts shown as units may or may not be physical units, may be located in one place, or may be distributed across multiple network units. Some or all of the units may be selected based on the actual requirements to achieve the objectives of the solution of the embodiment.

[0549] Furthermore, the functional units in the embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically independently, or two or more units may be integrated into a single unit. If the functions are implemented in the form of software functional units and sold or used as independent products, the functions may be stored in a computer-readable storage medium.

[0550] The above description merely illustrates a specific implementation of the present application and is not intended to limit the scope of protection. Any modification or substitution that a person skilled in the art could easily conceive within the technical scope disclosed herein should fall within the scope of protection. Therefore, the scope of protection of this application should be subject to the scope of protection of the claims.

[0551] [Cross-references to related applications] This application claims priority to Chinese Patent Application No. 202111646420.3, filed with the China National Intellectual Property Administration on December 30, 2021, with the title of the invention being "REFERENCE SIGNAL TRANSMISSION METHOD, APPARATUS, STORAGE MEDIUM, AND CHIP," the prior Chinese Patent Application is incorporated herein by reference in its entirety.

Claims

1. A method for receiving a reference signal, The first communication device obtains first setting information of a first reference signal transmitted by the positioning server in response to a request from the first communication device, wherein the first setting information includes instruction information for a plurality of time-domain resources used to determine phase information. The first communication device receives the first reference signal from the second communication device at the plurality of time-domain resources and determines at least two first phase information corresponding to at least two of the plurality of time-domain resources, wherein the at least two time-domain resources correspond to at least two different ports of the second communication device used to transmit the first reference signal, and each of the at least two first phase information is determined by measuring the first reference signal at the corresponding one of the at least two time-domain resources. The first communication device transmits second phase information, the second phase information is determined based on the at least two first phase information, and the second phase information is used by the second communication device, the positioning server, or other device that directly or indirectly receives the second phase information to determine the transmission angle of the first reference signal. It has, The second phase information includes at least one of the following: at least two first phase information, phase difference information derived from the at least two first phase information, or average information of at least one phase difference information derived from the at least two first phase information. method.

2. The aforementioned plurality of time-domain resources include a first time-domain resource and a second time-domain resource, The first communication device, as described above, receives the first reference signal from the second communication device using the plurality of time-domain resources and determines at least two first phase pieces of information corresponding to at least two of the plurality of time-domain resources, respectively. The first communication device receives a first portion of the first reference signal in the first time-domain resource and determines one of the at least two first phase pieces of information by measuring the first portion of the first reference signal. The first communication device receives the second portion of the first reference signal in the second time-domain resource and measures the second portion of the first reference signal to determine the other of the at least two first phase pieces of information. Having, The method according to claim 1.

3. The instruction information for the aforementioned multiple time-domain resources includes the following content: Information relating to the number of time-domain resource units between two of S1 time-domain resources corresponding to the first reference signal, where S1 is an integer greater than 1, and the S1 time-domain resources are time-domain resources used by the second communication device to transmit the first reference signal, and / or Information relating to the S1 time-domain resources corresponding to the first reference signal. Including at least one of the following: The method according to claim 1.

4. Two adjacent time-domain resources within the aforementioned S1 time-domain resources are separated by at least one time-domain resource unit. The method according to claim 3.

5. The first configuration information further includes a correspondence between S1 time-domain resources corresponding to the first reference signal and a plurality of ports, where S1 is an integer greater than 1. The plurality of ports are ports used by the second communication device to transmit the first reference signal using the S1 time-domain resources. The method according to claim 1.

6. After the first communication device has determined the at least two first phase pieces of information, the method proceeds as follows: The first communication device further transmits first instruction information, The first instruction information indicates a correspondence between a parameter in the second phase information and an identifier of the port used to transmit the first reference signal. The method according to claim 1.

7. A method for transmitting a reference signal, The second communication device generates the first reference signal, The second communication device transmits the first reference signal to the first communication device using a plurality of time-domain resources, wherein at least two of the plurality of time-domain resources correspond to at least two different ports of the second communication device used to transmit the first reference signal, The second communication device receives second phase information from the first communication device, the second phase information is determined based on at least two first phase information, and each of the at least two first phase information is determined by the first communication device measuring the first reference signal in one of the corresponding time-domain resources. The second communication device determines the firing angle of the first reference signal based on the second phase information. It has, The second phase information includes at least one of the following: at least two first phase information, phase difference information derived from the at least two first phase information, or average information of at least one phase difference information derived from the at least two first phase information. method.

8. As described above, transmitting the first reference signal to the first communication device using multiple time-domain resources by the second communication device is: The second communication device transmits a first portion of the first reference signal in a third time-domain resource through a first port connected to a first radio frequency channel, The second communication device transmits the second portion of the first reference signal in a fourth time-domain resource through a second port connected to the first radio frequency channel. Having, The method according to claim 7.

9. Before the second communication device transmits the first reference signal to the first communication device using multiple time-domain resources, the method, The second communication device further determines the second setting information of the first reference signal, The second setting information includes fourth instruction information, the fourth instruction information indicates S1 time-domain resources, where S1 is an integer greater than 1, and the S1 time-domain resources are the plurality of time-domain resources used to transmit the first reference signal. The method according to claim 7.

10. The second set of information mentioned above contains the following: Information regarding the number of time-domain resource units between two of the S1 time-domain resources, and / or Information relating to the aforementioned S1 time-domain resource Further including at least one of the following: The method according to claim 9.

11. The second configuration information further includes the correspondence between the S1 time-domain resources and the multiple ports, where S1 is an integer greater than 1. The second communication device transmits the first reference signal using the S1 time-domain resource units based on the second setting information. With respect to the time domain resources among the S1 time domain resources, the second communication device transmits the first reference signal through the port corresponding to that time domain resource. The method according to claim 9.

12. A communication device having a processor and a communication interface, Through the aforementioned communication interface, the processor receives the following content: The process involves obtaining first setting information for a first reference signal transmitted by a positioning server in response to a request from the communication device, wherein the first setting information includes instruction information for a plurality of time-domain resources used to determine phase information. The process involves receiving the first reference signal from the second communication device at the plurality of time-domain resources, determining at least two first phase information corresponding to at least two of the plurality of time-domain resources, wherein the at least two time-domain resources correspond to at least two different ports of the second communication device used to transmit the first reference signal, and each of the at least two first phase information is determined by measuring the first reference signal at the corresponding one of the at least two time-domain resources. The second phase information is transmitted, the second phase information is determined based on the at least two first phase information, and the second phase information is used by the second communication device, the positioning server, or other device that directly or indirectly receives the second phase information to determine the transmission angle of the first reference signal. It is configured to perform, A communication device wherein the second phase information includes at least one of the following: at least two first phase pieces of information, phase difference information derived from the at least two first phase pieces of information, or average information of at least one phase difference piece of information derived from the at least two first phase pieces of information.

13. The aforementioned plurality of time-domain resources include a first time-domain resource and a second time-domain resource, Through the aforementioned communication interface, the processor specifically: The first time-domain resource receives a first portion of the first reference signal, and based on the first portion of the first reference signal, one of the at least two first phase pieces of information is determined. The second time-domain resource receives the second portion of the first reference signal, and determines the other of the at least two first phase pieces based on the second portion of the first reference signal. Structured in such a way The communication device according to claim 12.

14. The instruction information for the aforementioned multiple time-domain resources includes the following content: Information relating to the number of time-domain resource units between two of S1 time-domain resources corresponding to the first reference signal, where S1 is an integer greater than 1, and the S1 time-domain resources are time-domain resources used by the second communication device to transmit the first reference signal, and / or Information relating to the S1 time-domain resources corresponding to the first reference signal. Including at least one of the following: The communication device according to claim 12.

15. Two adjacent time-domain resources within the aforementioned S1 time-domain resources are separated by at least one time-domain resource unit. The communication device according to claim 14.

16. The first configuration information further includes a correspondence between S1 time-domain resources corresponding to the first reference signal and a plurality of ports, where S1 is an integer greater than 1. The plurality of ports are ports used by the second communication device to transmit the first reference signal using the S1 time-domain resources. The communication device according to claim 12.

17. The processor is further configured to transmit first instruction information via the aforementioned communication interface. The first instruction information indicates a correspondence between a parameter in the second phase information and an identifier of the port used to transmit the first reference signal. The communication device according to claim 12.

18. A communication device including a processor and a communication interface, Through the aforementioned communication interface, the processor receives the following content: To generate the first reference signal, The first reference signal is transmitted to the first communication device using multiple time-domain resources, wherein at least two of the multiple time-domain resources correspond to two different ports of the communication device used to transmit the first reference signal, respectively. The first communication device receives second phase information, the second phase information is determined based on at least two first phase information, and each of the at least two first phase information is determined by the first communication device measuring the first reference signal in one of the corresponding time-domain resources. The launch angle of the first reference signal is determined based on the second phase information. It is configured to perform, A communication device wherein the second phase information includes at least one of the following: at least two first phase information, phase difference information calculated from the at least two first phase information, or average information of at least one phase difference information calculated from the at least two first phase information.

19. Through the aforementioned communication interface, the processor specifically: A first portion of the first reference signal is transmitted in a third time-domain resource through a first port connected to a first radio frequency channel. The second portion of the first reference signal is transmitted in the fourth time-domain resource through the second port connected to the first radio frequency channel. Structured in such a way The communication device according to claim 18.

20. Through the communication interface, the processor is further configured to determine second setting information for the first reference signal. The second setting information includes fourth instruction information, the fourth instruction information indicates S1 time-domain resources, where S1 is an integer greater than 1, and the S1 time-domain resources are the plurality of time-domain resources used to transmit the first reference signal. The communication device according to claim 18.

21. The second set of information mentioned above contains the following: Information regarding the number of time-domain resource units between two of the S1 time-domain resources, and / or Information relating to the aforementioned S1 time-domain resource Further including at least one of the following: The communication device according to claim 20.

22. The second configuration information further includes the correspondence between the S1 time-domain resources and the multiple ports, where S1 is an integer greater than 1. Through the aforementioned communication interface, the processor specifically: With respect to the time domain resource among the S1 time domain resources, the system is configured to transmit the first reference signal through the port corresponding to that time domain resource. The communication device according to claim 20.

23. Including the processor and memory, The memory is configured to store computer programs or instructions. The processor is configured to execute the computer program or instruction in the memory so that the method described in any one of claims 1 to 6 is performed. Communication device.

24. Includes a processing module and a communication module, The processing module is configured to perform the method described in any one of claims 1 to 6 through the communication module. Communication device.

25. A computer-readable storage medium for storing computer executable instructions, When the computer executable instruction is invoked by a computer, the method according to any one of claims 1 to 6 is executed. Computer-readable storage medium.

26. A chip system including a communication interface and a processor, The aforementioned communication interface is configured to input and / or output signaling or data. The processor is configured to execute computer executable instructions such that the device in which the chip system is incorporated performs the method according to any one of claims 1 to 6. Chip system.

27. Including the processor and memory, The memory is configured to store computer programs or instructions. The processor is configured to execute the computer program or instruction in the memory so that the method described in any one of claims 7 to 11 is performed. Communication device.

28. Includes a processing module and a communication module, The processing module is configured to perform the method according to any one of claims 7 to 11 through the communication module. Communication device.

29. A computer-readable storage medium for storing computer executable instructions, When the computer executable instruction is invoked by a computer, the method according to any one of claims 7 to 11 is executed. Computer-readable storage medium.

30. A chip system including a communication interface and a processor, The aforementioned communication interface is configured to input and / or output signaling or data. The processor is configured to execute computer executable instructions such that the device in which the chip system is incorporated performs the method according to any one of claims 7 to 11. Chip system.

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