CN116634556A

CN116634556A - Communication method and communication device

Info

Publication number: CN116634556A
Application number: CN202210302562.6A
Authority: CN
Inventors: 吴海兵; 李雪茹
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-02-11
Filing date: 2022-03-24
Publication date: 2023-08-22

Abstract

Embodiments of the present application provide a communication method and a communication device. The communication method includes: the terminal device receives and measures reference signals carried on a plurality of different frequency resources, based on the phase measurement result of the reference signal carried on the first frequency resource and the phase of the reference signal carried on the second frequency resource The measurement result determines the first information, and sends the first information to other devices, and the first information is used to indicate the direction angle. In the above communication method, the terminal device receives and measures reference signals carried on different frequency resources, and sends first information indicating the direction angle, so that other devices can obtain the direction angle according to the first information. Since the direction angle is determined based on phase measurement results of reference signals carried on different frequency resources, the obtained direction angle is unique, thereby solving the problem of ambiguity in angle measurement.

Description

Communication method and communication device

Technical Field

The embodiment of the application relates to the field of communication, and more particularly relates to a communication method and a communication device.

Background

In New Radio (NR) and sidelink (sidelink) positioning scenarios, the direction angle is typically determined based on a phase difference obtained by measuring a reference signal by the multi-antenna device. However, due to the integer ambiguity of the phase, when the distance between antennas is greater than or equal to half a wavelength, the determined direction angle may not be unique, i.e., the problem of angular ambiguity may occur.

In the existing protocol, in order to solve the problem of angle measurement ambiguity in the NR positioning scenario, the base station may report a plurality of possible angle measurement results to the location management function (location management function, LMF), and the LMF synthesizes the angle measurement results of the plurality of base stations to determine the final direction angle. However, when the number of base stations is small (e.g., 2), it is also difficult for the LMF to exclude the wrong direction angle from the final direction angle, i.e., the problem of the angle ambiguity cannot be solved.

In addition, the existing protocol also does not relate to how to solve the problem of angle measurement ambiguity in a sidelink positioning scene.

Disclosure of Invention

The embodiment of the application provides a communication method and a communication device, which can solve the problem of angle measurement ambiguity.

In a first aspect, a communication method is provided, where the method is applied to a terminal device, and includes:

receiving a reference signal carried on a first frequency resource and a second frequency resource, the first frequency resource and the second frequency resource being different; first information is transmitted, the first information being used to indicate a direction angle, the first information being determined based on a phase measurement of a reference signal carried on the first frequency resource and a phase measurement of a reference signal carried on the second frequency resource.

Based on the technical scheme, the terminal equipment receives the reference signals borne on different frequency resources and sends first information for indicating the direction angle, so that other equipment can acquire the direction angle according to the first information. Since the first information is determined based on the phase measurement results of the reference signals carried on different frequency resources and the first information is used for indicating the direction angle, it can be understood that the direction angle is also determined based on the phase measurement results of the reference signals carried on different frequency resources, and thus the obtained direction angle is unique in both NR and sidelink positioning scenes, and the problem of angle measurement ambiguity can be solved.

With reference to the first aspect, in certain implementations of the first aspect, the terminal device includes a first antenna and a second antenna; the receiving the reference signal carried on the first frequency resource and the second frequency resource comprises:

receiving, by the first antenna, reference signals carried on the first frequency resource and on the second frequency resource; the reference signals carried on the first frequency resource and the second frequency resource are received through the second antenna.

The phase measurement result of the reference signal on the first frequency resource is determined according to a first phase and a second phase, wherein the first phase is the phase of the reference signal of the first frequency resource received by the first antenna, and the second phase is the phase of the reference signal of the first frequency resource received by the second antenna; the phase measurement of the reference signal on the second frequency resource is determined based on a third phase and a fourth phase, the third phase being the phase of the reference signal of the second frequency resource received by the first antenna, and the fourth phase being the phase of the reference signal of the second frequency resource received by the second antenna.

Based on the technical scheme, the terminal equipment receives the reference signals borne on different frequency resources on different antennas to obtain the phases of the reference signals of the different antennas on the different frequency resources, so that the phase measurement results of the reference signals on the different frequency resources can be obtained, the terminal equipment can conveniently determine first information based on the phase measurement results of the reference signals borne on the different frequency resources, and then the terminal equipment or other equipment determines a unique direction angle according to the first information, and the problem of angle measurement ambiguity is solved.

In one possible implementation, the reference signal may carry identification information that identifies the reference signal, the antenna that transmitted the reference signal, or the port that transmitted the reference signal.

In one possible implementation, before receiving the reference signal carried on the first frequency resource and the second frequency resource, the method further comprises: receiving a request message, the request message comprising at least one of: the method comprises the steps of first frequency information, sending mode information of reference signals and types of content included in position information, wherein the first frequency information is used for indicating the frequency of optional reference signals; transmitting second information according to the first frequency information, wherein the second information is used for indicating at least one of the following: the frequency of the reference signal requested by the terminal device, the transmission mode of the reference signal, and the type of the content included in the location information.

In one possible implementation, the method further includes: receiving a response message for the second information, the response message being for indicating at least one of: the frequency of the configured reference signal, the transmission mode of the reference signal, and the type of content included in the position information.

The terminal device and the first device can perform interaction of second information, namely interaction of configuration information and capability information, so that the frequency of the configured reference signal, the sending mode of the reference signal or the type of content included in the position information can be determined, and further communication between the terminal device and the first device can be achieved.

With reference to the first aspect, in certain implementations of the first aspect, the receiving the reference signal carried on the first frequency resource and the second frequency resource includes:

receiving a reference signal on a first frequency resource sent by a first port and a reference signal on the first frequency resource sent by a second port; and receiving the reference signal on the second frequency resource transmitted by the third port and the reference signal on the second frequency resource transmitted by the fourth port.

The phase measurement result of the reference signal on the first frequency resource is determined according to a first phase and a second phase, wherein the first phase is the phase of the reference signal on the first frequency resource transmitted by the received first port, and the second phase is the phase of the reference signal on the first frequency resource transmitted by the received second port; the phase measurement of the reference signal on the second frequency resource is determined based on a third phase and a fourth phase, the third phase being the phase of the received reference signal on the second frequency resource transmitted by the third port, and the fourth phase being the phase of the received reference signal on the second frequency resource transmitted by the fourth port.

Based on the technical scheme, the terminal equipment can receive the reference signals on different frequency resources transmitted by different ports, and obtain the phase measurement results of the reference signals transmitted by different ports on different frequency resources, so that the terminal equipment can determine the first information based on the phase measurement results of the reference signals carried on different frequency resources, and further the terminal equipment or other equipment can determine the unique direction angle according to the first information, and the problem of angle measurement ambiguity is solved.

In one possible implementation, before receiving the reference signal carried on the first frequency resource and the second frequency resource, the method further comprises: receiving second information, the second information being used to indicate at least one of: the frequency of the reference signal requested by the first device, the transmission mode of the reference signal, and the type of content included in the location information.

In one possible implementation, the method further includes: transmitting a response message for the second information, the response message being used to indicate at least one of: the frequency of the configured reference signal, the transmission mode of the reference signal, and the type of content included in the position information.

In one possible implementation, the method further includes: and sending a request message, wherein the request message is used for requesting the first device to send the second information.

With reference to the first aspect, in certain implementations of the first aspect, the first information includes location information, the location information being used to indicate at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference.

Wherein the first phase difference information is obtained from a first phase and a second phase, the second phase difference information is obtained from a third phase and a fourth phase, the third phase difference information is obtained from the first phase and the third phase, the fourth phase difference information is obtained from the second phase and the fourth phase, and the difference information of the phase differences is obtained from the first phase, the second phase, the third phase, and the fourth phase.

In one possible implementation, the first information further includes positioning assistance information indicating a relative position of the first antenna and the second antenna.

Based on the above technical solution, the first information sent by the terminal device includes location information, where the location information is used to indicate phase information, phase difference information, or difference information of phase differences, and the phase information, the phase difference information, or the difference information of phase differences is obtained according to phases under different frequency resources. Therefore, in both NR and sidelink positioning scenes, the direction angle determined by other devices according to the position information in the first information is unique, so that the problem of angle measurement ambiguity can be solved.

With reference to the first aspect, in certain implementations of the first aspect, the first information includes a direction angle, the direction angle being an angle of arrival or an angle of departure, the direction angle being determined according to the location information, the location information being used to indicate at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference.

In one possible implementation, the terminal device determines a direction angle, which is an arrival angle or a departure angle, according to the location information and its own positioning assistance information.

Based on the above technical solution, the first information sent by the terminal device may be a direction angle, where the direction angle may be an arrival angle or a departure angle, and the direction angle is obtained according to position information, where the position information is used to indicate phase information, phase difference information, or difference information of phase differences, where the phase information, the phase difference information, or the difference information of phase differences is obtained according to phases under different frequency resources. Therefore, in both NR and sidelink positioning scenes, the direction angle determined by the terminal equipment according to the position information is unique, so that the problem of angle measurement ambiguity can be solved.

With reference to the first aspect, in certain implementations of the first aspect, the first phase information includes a first phase; the second phase information includes a second phase; the third phase information includes the three phases; the fourth phase information includes a fourth phase; the first phase difference information includes a first phase difference; the second phase difference information includes a second phase difference; the third phase difference information includes a third phase difference; the fourth phase difference information includes a fourth phase difference; the difference information of the phase difference includes a difference of the first phase difference or a difference of the second phase difference.

The first phase difference is a phase difference between the first phase and the second phase; the second phase difference is a phase difference between the third phase and the fourth phase; the third phase difference is a phase difference between the first phase and the third phase; the fourth phase difference is a phase difference between the second phase and the fourth phase; the difference value of the first phase difference is the difference value of the first phase difference and the second phase difference; the difference between the second phase difference and the fourth phase difference is the difference between the third phase difference and the fourth phase difference.

With reference to the first aspect, in certain implementations of the first aspect, the receiving the reference signal carried on the first frequency resource and the second frequency resource includes: receiving a first reference signal, the first reference signal being carried on the first frequency resource; a second reference signal is received, the second reference signal being carried on the second frequency resource.

With reference to the first aspect, in certain implementations of the first aspect, the receiving the reference signal carried on the first frequency resource and the second frequency resource includes: a first reference signal is received, the first reference signal being carried in common by a first frequency resource and a second frequency resource.

Based on the above technical solution, the reference signals on different frequency resources received by the terminal device may be carried by different reference signals, or may be carried by the same reference signal, and no matter which mode of transmitting the reference signal is adopted, the terminal device may receive the reference signals on different frequency resources, so that the first information may be determined according to the phase measurement results of the reference signals on different frequency resources.

In a second aspect, a communication method is provided, the method being applied to a first device, comprising: transmitting reference signals carried on a first frequency resource and a second frequency resource, the first frequency resource and the second frequency resource being different; first information is received from the terminal device, the first information being indicative of a direction angle, the first information being determined based on phase measurements of reference signals carried on a first frequency resource and phase measurements of reference signals carried on a second frequency resource.

Based on the above technical solution, the first device sends reference signals carried on different frequency resources, and receives first information from the terminal device, where the first information is used to indicate a direction angle, and the first device may obtain the direction angle according to the first information. Since the first information is determined based on the phase measurement results of the reference signals carried on different frequency resources and the first information is used for indicating the direction angle, it can be understood that the direction angle is also determined based on the phase measurement results of the reference signals carried on different frequency resources, and thus the obtained direction angle is unique in both NR and sidelink positioning scenes, and the problem of angle measurement ambiguity can be solved.

With reference to the second aspect, in certain implementations of the second aspect, the reference signal carried on the first frequency resource is received by the first antenna and the second antenna; the reference signal carried on the second frequency resource is received by the first antenna and the second antenna; the phase measurement result of the reference signal on the first frequency resource is determined according to a first phase and a second phase, wherein the first phase corresponds to the phase of the reference signal on the first frequency resource received by the first antenna, and the second phase corresponds to the phase of the reference signal on the first frequency resource received by the second antenna; the phase measurement of the reference signal on the second frequency resource is determined based on a third phase corresponding to the phase of the reference signal on the second frequency resource received by the first antenna and a fourth phase corresponding to the phase of the reference signal on the second frequency resource received by the second antenna.

In one possible implementation, before transmitting the reference signal carried on the first frequency resource and the second frequency resource, the method further comprises: transmitting a request message, the request message comprising at least one of: the method comprises the steps of first frequency information, sending mode information of reference signals and types of content included in position information, wherein the first frequency information is used for indicating the frequency of optional reference signals; receiving second information, the second information being used to indicate at least one of: the frequency of the reference signal requested by the terminal device, the transmission mode of the reference signal, and the type of the content included in the location information.

The first device and the terminal device can perform interaction of second information, namely interaction of configuration information and capability information, so that the frequency of the configured reference signal, the sending mode of the reference signal or the type of content included in the position information can be determined, and further communication between the terminal device and the first device can be achieved.

With reference to the second aspect, in certain implementations of the second aspect, the transmitting the reference signal carried on the first frequency resource and on the second frequency resource includes: transmitting reference signals on the first frequency resource through the first port and the second port respectively; and transmitting the reference signal on the second frequency resource through the third port and the fourth port respectively.

The phase measurement result of the reference signal on the first frequency resource is determined according to a first phase and a second phase, wherein the first phase corresponds to the phase of the reference signal on the first frequency resource transmitted by the first port, and the second phase corresponds to the phase of the reference signal on the first frequency resource transmitted by the second port; the phase measurement of the reference signal on the second frequency resource is determined based on a third phase of the reference signal on the second frequency resource transmitted by the third port and a fourth phase of the reference signal on the second frequency resource transmitted by the fourth port.

With reference to the second aspect, in certain implementations of the second aspect, the first device includes a first antenna and a second antenna, and the reference signal on the first frequency resource transmitted by the first port and the reference signal on the second frequency resource transmitted by the third port are both transmitted through the first antenna, and the reference signal on the first frequency resource transmitted by the second port and the reference signal on the second frequency resource transmitted by the fourth port are both transmitted through the second antenna.

It will be appreciated that the first antenna of the first device corresponds to the first port and the third port and the second antenna of the first device corresponds to the second port and the fourth port. That is, the reference signal transmitted by the first port and the reference signal transmitted by the third port are both transmitted through the first antenna, and the reference signal transmitted by the second port and the reference signal transmitted by the fourth port are both transmitted through the second antenna.

Based on the technical scheme, the first device can send the reference signals borne on different frequency resources through different antennas (or different ports), so that the terminal device can obtain the phase measurement results of the reference signals sent on different frequency resources by different ports, the terminal device can determine first information according to the phase measurement results of the reference signals on different frequency resources, and further the terminal device or the first device can determine a unique direction angle according to the first information, and the problem of angle measurement ambiguity is solved.

In one possible implementation, the reference signal carries identification information for identifying the reference signal, an antenna transmitting the reference signal, or a port transmitting the reference signal.

In one possible implementation, before transmitting the reference signal carried on the first frequency resource and the second frequency resource, the method further comprises: transmitting second information according to the first frequency information, wherein the first frequency information is used for indicating the frequency of the optional reference signal, and the second information is used for indicating at least one of the following: the frequency of the reference signal requested by the first device, the transmission mode information of the reference signal, and the type of content included in the location information.

In one possible implementation, the method further includes: a request message is received, the request message being for requesting the first device to send the second information.

With reference to the second aspect, in certain implementations of the second aspect, the first information includes location information, the location information being used to indicate at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference; the method further comprises the steps of: the direction angle is determined from the position information.

Wherein the first phase difference information is obtained from the first phase and the second phase, the second phase difference information is obtained from the third phase and the fourth phase, the third phase difference information is obtained from the first phase and the third phase, the fourth phase difference information is obtained from the second phase and the fourth phase, and the difference information of the phase difference is obtained from the first phase, the second phase, the third phase, and the fourth phase.

In one possible implementation, the first device determines a direction angle, which may be an angle of arrival or an angle of departure, from the location information and the positioning assistance information.

Based on the above technical solution, the first information received by the first device includes location information, where the location information is used to indicate phase information, phase difference information, or difference information of phase differences, and the phase information, the phase difference information, or the difference information of phase differences is obtained according to phases under different frequency resources. Therefore, in both NR and sidelink positioning scenes, the direction angle which can be determined by the first device according to the position information in the received first information is unique, so that the problem of angle measurement ambiguity can be solved.

With reference to the second aspect, in certain implementations of the second aspect, the first information includes a direction angle, the direction angle being an angle of arrival or an angle of departure, the direction angle being determined according to the location information, the location information being used to indicate at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference.

Based on the above technical solution, the first information sent by the first device receiving the terminal device may be a direction angle, where the direction angle may be an arrival angle or a departure angle, and the direction angle is obtained by the terminal device according to location information, where the location information is used to indicate phase information, phase difference information, or difference information of a phase difference, where the phase information, phase difference information, or difference information of a phase difference is obtained according to phases under different frequency resources, so, in both NR and sidelink positioning scenarios, the direction angle determined by the terminal device according to the location information is unique, so that the direction angle received by the first device is also unique, that is, the problem of angle measurement ambiguity can be solved.

With reference to the second aspect, in certain implementations of the second aspect, the first phase information includes the first phase; the second phase information includes the second phase; the third phase information includes the third phase; the fourth phase information includes the fourth phase; the first phase difference information includes a first phase difference; the second phase difference information includes a second phase difference; the third phase difference information includes a third phase difference; the fourth phase difference information includes a fourth phase difference; the difference information of the phase difference includes a difference of the first phase difference or a difference of the second phase difference.

With reference to the second aspect, in certain implementations of the second aspect, the transmitting the reference signal carried on the first frequency resource and on the second frequency resource includes: transmitting a first reference signal carried on a first frequency resource; a second reference signal carried on a second frequency resource is transmitted.

With reference to the second aspect, in certain implementations of the second aspect, the transmitting the reference signal carried on the first frequency resource and on the second frequency resource includes: a first reference signal carried on a first frequency resource and a second frequency resource is transmitted.

Based on the above technical solution, the reference signals on different frequency resources sent by the first device may be carried by different reference signals, or may be carried by the same reference signal, and whichever mode of sending the reference signal is adopted may enable the terminal device to receive the reference signals on different frequency resources, so that the terminal device may determine the first information according to the phase measurement results of the reference signals on different frequency resources.

In a third aspect, a communication method is provided, where the method is applied to a core network device, and includes: receiving location information from a terminal device, the location information being determined based on phase measurements of reference signals carried on a first frequency resource and phase measurements of reference signals carried on a second frequency resource; from this position information, the departure angle is determined.

With reference to the third aspect, in certain implementations of the third aspect, the location information is used to indicate at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference.

With reference to the third aspect, in certain implementations of the third aspect, the first phase information includes the first phase; the second phase information includes the second phase; the third phase information includes the third phase; the fourth phase information includes the fourth phase; the first phase difference information includes a first phase difference; the second phase difference information includes a second phase difference; the third phase difference information includes a third phase difference; the fourth phase difference information includes a fourth phase difference; the difference information of the phase difference includes a difference of the first phase difference or a difference of the second phase difference.

In one possible implementation, the core network device may also receive positioning assistance information sent by the first device.

In one possible implementation, the core network device determines a direction angle from the location information and the positioning assistance information, the direction angle being an departure angle.

Based on the above scheme, the core network device can receive the position information from the terminal device, and the position information is determined according to the phase measurement results of the reference signals on different frequency resources, so that the core network device can obtain a unique departure angle according to the position information, and the problem of angle measurement ambiguity can be solved.

In a fourth aspect, a communication method is provided, where the method is applied to a core network device, and includes: receiving location information from the terminal device, the location information being determined based on a phase measurement of a reference signal carried on a first frequency resource and a phase measurement of a reference signal carried on a second frequency resource, the location information being used to determine an departure angle; the location information is sent to the access network device.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the location information is used to indicate at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the first phase information includes the first phase; the second phase information includes the second phase; the third phase information includes the third phase; the fourth phase information includes the fourth phase; the first phase difference information includes a first phase difference; the second phase difference information includes a second phase difference; the third phase difference information includes a third phase difference; the fourth phase difference information includes a fourth phase difference; the difference information of the phase difference includes a difference of the first phase difference or a difference of the second phase difference.

Based on the technical scheme, the core network device can forward the position information from the terminal device to the first device, so that the first device obtains a unique direction angle according to the position information, and the problem of angle measurement ambiguity can be solved.

In a fifth aspect, there is provided a communication apparatus comprising: a receiving unit and a transmitting unit. The receiving unit is used for: receiving a reference signal carried on a first frequency resource and a second frequency resource, the first frequency resource and the second frequency resource being different; the transmitting unit is used for: and transmitting first information, wherein the first information is used for indicating a direction angle, and the first information is determined based on the phase measurement result of the reference signal carried on the first frequency resource and the phase measurement result of the reference signal carried on the second frequency resource.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the terminal device includes a first antenna and a second antenna; the receiving unit is further configured to: receiving, by the first antenna, the reference signal carried on the first frequency resource and the second frequency resource; the reference signal carried on the first frequency resource and the second frequency resource is received through the second antenna.

The phase measurement of the reference signal on the first frequency resource is determined based on a first phase of the reference signal of the first frequency resource received by the first antenna and a second phase of the reference signal of the first frequency resource received by the second antenna; the phase measurement of the reference signal on the second frequency resource is determined based on a third phase and a fourth phase, the third phase being the phase of the reference signal of the second frequency resource received by the first antenna, the fourth phase being the phase of the reference signal of the second frequency resource received by the second antenna.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the receiving unit is further configured to: receiving a request message, the request message comprising at least one of: the method comprises the steps of first frequency information, sending mode information of reference signals and types of content included in position information, wherein the first frequency information is used for indicating the frequency of optional reference signals; the transmitting unit is further configured to: transmitting second information according to the first frequency information, wherein the second information is used for indicating at least one of the following: the frequency of the reference signal requested by the terminal device, the transmission mode of the reference signal, and the type of the content included in the location information.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the receiving unit is further configured to: receiving a response message for the second information, the response message being for indicating at least one of: the frequency of the configured reference signal, the transmission mode of the reference signal, and the type of content included in the position information.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the receiving unit is further configured to: receiving a reference signal on the first frequency resource sent by a first port and a reference signal on the first frequency resource sent by a second port; and receiving the reference signal on the second frequency resource sent by the third port and the reference signal on the second frequency resource sent by the fourth port.

The phase measurement result of the reference signal on the first frequency resource is determined according to a first phase and a second phase, wherein the first phase is the phase of the received reference signal on the first frequency resource transmitted by the first port, and the second phase is the phase of the received reference signal on the first frequency resource transmitted by the second port; the phase measurement of the reference signal on the second frequency resource is determined based on a third phase of the received reference signal on the second frequency resource transmitted by the third port and a fourth phase of the received reference signal on the second frequency resource transmitted by the fourth port.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the receiving unit is further configured to: receiving second information, the second information being used to indicate at least one of: the frequency of the reference signal requested by the first device, the transmission mode of the reference signal, and the type of content included in the location information.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the sending unit is further configured to: transmitting a response message for the second information, the response message being used to indicate at least one of: the frequency of the configured reference signal, the transmission mode of the reference signal, and the type of content included in the position information.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the sending unit is further configured to: and sending a request message, wherein the request message is used for requesting the first device to send the second information.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the first information includes location information, the location information being used to indicate at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference.

In one possible implementation, the first information further includes positioning assistance information for indicating a relative position of the antennas.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the first information includes a direction angle, the direction angle being an angle of arrival or an angle of departure, the direction angle being determined according to the location information, the location information being used to indicate at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference.

In a possible implementation manner, the communication device further includes a processing unit, where the processing unit is configured to: and determining a direction angle according to the position information and positioning auxiliary information, wherein the direction angle is an arrival angle or a departure angle, and the positioning auxiliary information is used for indicating the relative position of the antenna of the terminal equipment.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the first phase information includes the first phase; the second phase information includes the second phase; the third phase information includes the third phase; the fourth phase information includes the fourth phase; the first phase difference information includes a first phase difference; the second phase difference information includes a second phase difference; the third phase difference information includes a third phase difference; the fourth phase difference information includes a fourth phase difference; the difference information of the phase difference includes a difference of the first phase difference or a difference of the second phase difference.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the receiving unit is further configured to: receiving a first reference signal, the first reference signal being carried on the first frequency resource; a second reference signal is received, the second reference signal being carried on the second frequency resource.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the receiving unit is further configured to: a first reference signal is received, the first reference signal being carried by the first frequency resource and the second frequency resource together.

The advantages of the communication device according to the fifth aspect may refer to the advantages of the method according to the first aspect, and will not be described herein.

In a sixth aspect, there is provided a communication apparatus comprising: a transmitting unit and a receiving unit. The transmitting unit is used for: transmitting a reference signal carried on a first frequency resource and a second frequency resource, the first frequency resource and the second frequency resource being different; the receiving unit is used for: first information is received from a terminal device, the first information being used to indicate a direction angle, the first information being determined based on a phase measurement of the reference signal carried on the first frequency resource and a phase measurement of the reference signal carried on the second frequency resource.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the reference signal carried on the first frequency resource is received by the first antenna and the second antenna; the reference signal carried on the second frequency resource is received by the first antenna and the second antenna.

The phase measurement result of the reference signal on the first frequency resource is determined according to a first phase and a second phase, wherein the first phase corresponds to the phase of the reference signal on the first frequency resource received by the first antenna, and the second phase corresponds to the phase of the reference signal on the first frequency resource received by the second antenna; the phase measurement of the reference signal on the second frequency resource is determined based on a third phase corresponding to the phase of the reference signal on the second frequency resource received by the first antenna and a fourth phase corresponding to the phase of the reference signal on the second frequency resource received by the second antenna.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the sending unit is further configured to: transmitting reference signals on the first frequency resource through the first port and the second port respectively; and transmitting the reference signal on the second frequency resource through the third port and the fourth port respectively.

The phase measurement result of the reference signal on the first frequency resource is determined according to a first phase and a second phase, wherein the first phase corresponds to the phase of the reference signal on the first frequency resource transmitted by the first port, and the second phase corresponds to the phase of the reference signal on the first frequency resource transmitted by the second port; the phase measurement of the reference signal on the second frequency resource is determined based on a third phase and a fourth phase, the third phase being the phase of the reference signal on the second frequency resource transmitted by the third port, and the fourth phase being the phase of the reference signal on the second frequency resource transmitted by the fourth port.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the sending unit is further configured to: transmitting a request message, the request message comprising at least one of: the method comprises the steps of first frequency information, sending mode information of reference signals and types of content included in position information, wherein the first frequency information is used for indicating the frequency of optional reference signals; the receiving unit is further configured to: receiving second information, the second information being used to indicate at least one of: the frequency of the reference signal requested by the terminal device, the transmission mode of the reference signal, and the type of the content included in the location information.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the sending unit is further configured to: transmitting a response message for the second information, the response message being used to indicate at least one of: the frequency of the configured reference signal, the transmission mode of the reference signal, and the type of content included in the position information.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the reference signal carries identification information, the identification information being used to identify the reference signal, an antenna transmitting the reference signal, or a port transmitting the reference signal.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the first device includes a first antenna and a second antenna, and the reference signal on the first frequency resource transmitted by the first port and the reference signal on the second frequency resource transmitted by the third port are both transmitted through the first antenna, and the reference signal on the first frequency resource transmitted by the second port and the reference signal on the second frequency resource transmitted by the fourth port are both transmitted through the second antenna.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the sending unit is further configured to: transmitting second information according to the first frequency information, wherein the first frequency information is used for indicating the frequency of the optional reference signal, and the second information is used for indicating at least one of the following: the frequency of the reference signal requested by the first device, the transmission mode information of the reference signal, and the type of content included in the location information.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the receiving unit is further configured to: receiving a response message for the second information, the response message being for indicating at least one of: the frequency of the configured reference signal, the transmission mode of the reference signal, and the type of content included in the position information.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the receiving unit is further configured to: a request message is received, the request message being for requesting the first device to send the second information.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the first information includes location information, the location information being used to indicate at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference; the communication device further comprises a processing unit for: the direction angle is determined from the position information.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the first information includes a direction angle, the direction angle being an angle of arrival or an angle of departure, the direction angle being determined according to the location information, the location information being used to indicate at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the first phase information includes the first phase; the second phase information includes the second phase; the third phase information includes the third phase; the fourth phase information includes the fourth phase; the first phase difference information includes a first phase difference; the second phase difference information includes a second phase difference; the third phase difference information includes a third phase difference; the fourth phase difference information includes a fourth phase difference; the difference information of the phase difference includes a difference of the first phase difference or a difference of the second phase difference.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the sending unit is further configured to: transmitting a first reference signal carried on a first frequency resource; a second reference signal carried on a second frequency resource is transmitted.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the sending unit is further configured to: a first reference signal carried on a first frequency resource and a second frequency resource is transmitted.

The advantages of the communication device according to the sixth aspect may refer to the advantages of the method according to the second aspect, and are not described herein.

In a seventh aspect, there is provided a communication apparatus comprising: a receiving unit and a processing unit. The receiving unit is used for: receiving location information from a terminal device, the location information being determined based on phase measurements of reference signals carried on a first frequency resource and phase measurements of reference signals carried on a second frequency resource; the processing unit is used for: from this position information, the departure angle is determined.

With reference to the seventh aspect, in certain implementations of the seventh aspect, the location information is used to indicate at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference.

With reference to the seventh aspect, in certain implementations of the seventh aspect, the first phase information includes the first phase; the second phase information includes the second phase; the third phase information includes the third phase; the fourth phase information includes the fourth phase; the first phase difference information includes a first phase difference; the second phase difference information includes a second phase difference; the third phase difference information includes a third phase difference; the fourth phase difference information includes a fourth phase difference; the difference information of the phase difference includes a difference of the first phase difference or a difference of the second phase difference.

Advantageous effects of the communication device according to the seventh aspect may refer to advantageous effects of the method according to the third aspect, and are not described herein.

An eighth aspect provides a communication apparatus comprising: a receiving unit and a transmitting unit. The receiving unit is used for: receiving location information from the terminal device, the location information being determined based on a phase measurement of a reference signal carried on a first frequency resource and a phase measurement of a reference signal carried on a second frequency resource, the location information being used to determine an departure angle; the transmitting unit is used for: the location information is sent to the access network device.

With reference to the eighth aspect, in certain implementations of the eighth aspect, the location information is used to indicate at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference.

With reference to the eighth aspect, in certain implementations of the eighth aspect, the first phase information includes the first phase; the second phase information includes the second phase; the third phase information includes the third phase; the fourth phase information includes the fourth phase; the first phase difference information includes a first phase difference; the second phase difference information includes a second phase difference; the third phase difference information includes a third phase difference; the fourth phase difference information includes a fourth phase difference; the difference information of the phase difference includes a difference of the first phase difference or a difference of the second phase difference.

The advantageous effects of the communication device according to the eighth aspect may refer to the advantageous effects of the method according to the fourth aspect, and are not described herein.

In a ninth aspect, there is provided a communication apparatus comprising: a processor coupled to a memory for storing a program or instructions which, when executed by the processor, cause the communications apparatus to implement a method of any one of the possible implementations of the first to fourth aspects.

In a tenth aspect, there is provided a chip comprising a processor, the memory for storing a computer program being provided separately from the chip, the processor being for executing the computer program stored in the memory to perform the method of any of the possible implementations of the first to fourth aspects above.

In an eleventh aspect, there is provided a computer program product comprising: computer program code which, when run on a computer, causes the computer to perform the method of any one of the possible implementations of the first to fourth aspects described above.

In a twelfth aspect, a computer readable storage medium is provided, in which a computer program or instructions is stored which, when executed, implement the method of any one of the possible implementations of the first to fourth aspects.

A thirteenth aspect provides a communication system comprising a terminal device and a first device, wherein the terminal device is configured to perform the method of any one of the possible implementations of the first aspect; alternatively, the first device is configured to perform the method of any one of the possible implementations of the second aspect.

A fourteenth aspect provides a communication system comprising a terminal device, a first device and a core network device, wherein the terminal device is configured to perform the method of any one of the possible implementations of the first aspect; alternatively, the first device is configured to perform a method according to any one of the possible implementations of the second aspect; alternatively, the core network device is configured to perform the method of any of the possible implementations of the third aspect or the core network device is configured to perform the method of any of the possible implementations of the fourth aspect.

A fifteenth aspect provides a communication system comprising a terminal device and a first device, wherein the terminal device comprises communication means of any one of the possible implementations of the fifth aspect described above; alternatively, the first device comprises communication means of any one of the possible implementations of the sixth aspect.

A sixteenth aspect provides a communication system comprising a terminal device, a first device and a core network device, wherein the terminal device comprises communication means of any one of the possible implementations of the fifth aspect; alternatively, the first device comprises communication means of any one of the possible implementations of the sixth aspect; alternatively, the core network device comprises the communication means of any of the possible implementations of the seventh aspect or the core network device comprises the communication means of any of the possible implementations of the eighth aspect.

It should be appreciated that any of the above-mentioned communication apparatuses, chips, computer program products, computer readable storage media or communication systems, etc. are used to execute the corresponding methods provided above, and therefore, the advantages achieved by the above-mentioned communication apparatuses, chips, computer program products, computer readable storage media or communication systems may refer to the advantages of the corresponding methods, and are not repeated herein.

Drawings

Fig. 1 is a schematic view of an application scenario according to the present application.

Fig. 2 is a schematic diagram of another application scenario according to the present application.

Fig. 3 is a diagram illustrating transmission of reference signals by a multi-antenna device.

Fig. 4 is a schematic flow chart of a communication method provided by an embodiment of the present application.

Fig. 5 is a schematic flow chart of another communication method provided by an embodiment of the present application.

Fig. 6 is a schematic flow chart of another communication method provided by an embodiment of the present application.

Fig. 7 is a schematic flow chart of another communication method provided by an embodiment of the present application.

Fig. 8 is a schematic flow chart of another communication method provided by an embodiment of the present application.

Fig. 9 is a schematic flow chart of another communication method provided by an embodiment of the present application.

Fig. 10 is a schematic flow chart of another communication method provided by an embodiment of the present application.

Fig. 11 is a schematic flow chart of another communication method provided by an embodiment of the present application.

Fig. 12 is a schematic flow chart of another communication method provided by an embodiment of the present application.

Fig. 13 is a schematic diagram of a communication device according to an embodiment of the present application.

Fig. 14 is a schematic diagram of a communication device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

In the present application, "at least one" means one or more, and "a plurality" means two or more. In addition, in the embodiments of the present application, the "first", "second" and various numerical numbers are merely for convenience of description and are not intended to limit the scope of the embodiments of the present application. The sequence numbers of the processes below do not mean the sequence of execution, and the execution sequence of the processes should be determined by the functions and the internal logic, and should not be construed as limiting the implementation process of the embodiments of the present application. In addition, in the embodiments of the present application, words such as "701", "801", "901" and the like are merely identifiers made for convenience of description, and do not limit the order of executing steps.

In the present application, "for indicating" may include for direct indication and for indirect indication. When describing that certain indication information is used for indicating A, the indication information may be included to directly indicate A or indirectly indicate A, and does not represent that the indication information is necessarily carried with A. In the embodiment of the application, the descriptions of "when … …", "in the case of … …", "if" and "if" all refer to that the device will make corresponding processing under some objective condition, and are not limited in time, nor do the device require that the device have a judging action in implementation, nor are other limitations meant to exist.

In the present application, the words "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

The technical scheme of the embodiment of the application can be applied to various communication systems, such as: the technical scheme provided by the application can be applied to future communication systems, such as sixth generation mobile communication systems, for example, a global system for mobile communication (global system of mobile communication, GSM) system, code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile communication system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) communication system, fifth generation (5th generation,5G) mobile communication system or new radio access technology (NR).

The embodiment of the application can be applied to terminal equipment. The terminal device may be a device providing voice/data connectivity to a user, e.g., a handheld device having a wireless connection function, a vehicle-mounted device, etc.; devices in the communication of the internet of vehicles, such as communication terminals uploaded by vehicles, road Side Units (RSUs); the communication terminal can be carried on the unmanned plane; but also end devices in internet of things (internet of things, ioT) systems. A terminal device may also be called a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, a user device, or the like.

Exemplary terminal devices include, but are not limited to: a mobile phone, a tablet, a notebook, a palm, a mobile internet device (mobile internet device, MID), a wearable device, a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (self driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a wearable device, a terminal device in a 5G network or a terminal in a future evolved land mobile communication network (public land mobile network), the present application is not limited to the specific embodiments of the present application.

The technical scheme in the embodiment of the application can also be applied to access network equipment. The access network device may be a device capable of accessing the terminal device to a wireless network. The access network device may also be referred to as a radio access network (radio access network, RAN) node, a radio access network device, a network device. The access network device may be a base station, for example.

The base station in the embodiment of the application can cover various names in the following broad sense or replace the names, for example: a node B (NodeB), an evolved NodeB (eNB), a next generation NodeB (gNB), a relay station, an access point, a transmission point (transmitting and receiving point, TRP), a transmission point (transmitting point, TP), a master eNodeB (MeNB), a secondary eNodeB (SeNB), a multi-mode radio (multi standard radio, MSR) node, a home base station, a network controller, an access node, a radio node, an Access Point (AP), a transmission node, a transceiver node, a baseband unit (BBU), a radio remote unit (remote radio unit, RRU), an active antenna unit (active antenna unit, AAU), a radio head (remote radio head, RRH), a Central Unit (CU), a Distributed Unit (DU), a positioning node, and the like. The base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. A base station may also refer to a communication module, modem, or chip for placement within the aforementioned device or apparatus. The base station may also be a network side device in a 6G network, a device that assumes the function of a base station in a future communication system, or the like. The base stations may support networks of the same or different access technologies.

The base station may be fixed or mobile. For example, a helicopter or drone may be configured to act as a mobile base station, and one or more cells may move according to the location of the mobile base station. In other examples, a helicopter or drone may be configured to function as a device to communicate with another base station.

The specific technology and specific device configuration adopted by the access network device are not limited by the embodiment of the present application.

In order to facilitate understanding of the embodiments of the present application, first, an application scenario to which the embodiments of the present application are applicable will be described by taking fig. 1 and fig. 2 as examples.

Fig. 1 is a schematic diagram of an application scenario 100 according to the present application. As shown in fig. 1, the application scenario 100 may include two terminal devices, such as terminal device 110 and terminal device 120 in fig. 1. The application scenario 100 mainly relates to a sidelink positioning scenario, in which the terminal device 110 and the terminal device 120 can determine a direction angle through a direct communication manner, so as to complete relative positioning or absolute positioning. When the positions of the terminal equipment 110 and the terminal equipment 120 are unknown, the terminal equipment 110 and the terminal equipment 120 can determine the direction angle in a direct communication mode, so that relative positioning is realized; when the absolute position of the terminal device 110 or the absolute position of the terminal device 120 is known, the terminal device 110 and the terminal device 120 can determine the direction angle by means of direct communication, thereby realizing absolute positioning.

In an embodiment of the present application, the direction angle may include an angle of arrival (AoA) and an angle of departure (angle of departure, AOD), where AoA may be understood as the relative direction angle at which a signal transmitted by a single antenna is incident on an antenna array; AOD is understood to be the relative angle of incidence of a signal transmitted by an antenna array to another antenna.

It should be noted that, the terminal device 110 and the terminal device 120 may have multiple antennas, and the terminal device 110 and the terminal device 120 may receive or transmit reference signals on the multiple antennas.

Fig. 2 is a schematic diagram of an application scenario 200 according to the present application. As shown in fig. 2, application scenario 200 may include a terminal device 210, an access network device 220, an access network device 230, and a core network device 240, and terminal device 210 may be capable of signaling interactions with access network device 220 or access network device 230. Application scenario 200 is primarily concerned with an NR positioning scenario in which the locations of access network device 220 and access network device 230 are generally known. Thus, the access network device 220 and the access network device 230 may be used as anchor devices for determining the location of the terminal device 210, and the core network device 240 may be used as a third party device for participating in solving the direction angle, receiving and transmitting location information, and so on. Access network device 220 and access network device 230 may have multiple antennas and may transmit reference signals on the multiple antennas.

It should be noted that the number of access network devices in fig. 2 is merely illustrative, and the present application may also include more access network devices, which is not limited to this aspect of the present application.

It should be understood that the multiple antennas involved in each device in fig. 1 and 2 may be physical antennas at multiple different locations on the device, virtual antennas formed by movement of one antenna on the device, or a combination of both, which is not a limitation of the present application. In addition, the application scenarios shown in fig. 1 and 2 are only exemplary illustrations, and should not be construed as limiting the present application.

Fig. 3 shows a schematic diagram of a multi-antenna device transmitting reference signals. For example, fig. 3 may include device 310 and device 320. Where device 310 has multiple antennas, device 310 may be terminal device 110 or terminal device 120 in fig. 1, and device 310 may also be access network device 220 or access network device 230 in fig. 2. Device 320 may have multiple antennas or only one antenna, device 320 may be terminal device 120 or terminal device 110 of fig. 1, and device 320 may also be terminal device 210 of fig. 2. It should be noted that, when the device 320 has multiple antennas, the device 320 should receive or transmit the reference signal on the same antenna.

As shown in fig. 3, device 310 and device 320 perform a relative goniometric task, wherein device 310 has, for example, two antennas, labeled antenna 1 and antenna 2, with an antenna spacing d. The two antennas of the device 310 may respectively receive the reference signals transmitted by the device 320, and the phase measurement value corresponding to the antenna 1 is assumed to beThe corresponding phase measurement value of the antenna 2 is +.>The theoretical calculation formula of the phase measurement value is as follows:

wherein f is the signal frequency, r ₁ R is the distance of device 320 from antenna 1 of device 310 ₂ For the distance of device 320 to antenna 2 of device 310, c is the reference signal propagation velocity, Δt is the time synchronization error between device 310 and device 320, θ ₁ θ is the initial phase of the reference signal of device 310 ₂ Mod2 pi represents the remainder of 2pi for the initial phase of the reference signal for device 320.

Subtracting equation 2 from equation 1, the phase difference between antenna 1 and antenna 2 is known as:

in general, the distance between device 310 and device 320 is much greater than the size of the antenna aperture on device 310. Thus, for the antenna of device 310, the reference signal between device 310 and device 320 may be assumed to be a parallel wave, the direction angle of which is denoted by θ, then r ₂ -r ₁ =dcos θ. Accordingly, equation 3 may be written as:

expanding mod2 pi in equation 4, can yield:

where k is an integer. Further, it is possible to obtain:

when the distance d between the two antennas is less than half a wavelength, i.ePhase difference->The value range is [0,2 pi ]]，The value range of (2) is +.>The k in the formula 6 can only obtain one value, that is, dcos theta can obtain a unique value, so that the obtained direction angle theta can obtain a unique value, and the problem of angle measurement ambiguity does not exist.

When the distance between the two antennas is equal to or greater than half a wavelength, namelyThe value of k in equation 6 may not be unique. This means that dcos θ may not be unique, so that the resulting direction angle θ may take multiple values, i.e., there is a problem of angular ambiguity. For example, when->That is, when the distance between two antennas of the device 310 is one wavelength, k has two values, where k takes 0 or 1, and both values can obtain a calculation result of a direction angle, that is, two possible angle values conform to the measurement result, that is, the problem of angle measurement ambiguity occurs.

It can be seen that the device 310 receives the reference signals with the same frequency resource through two antennas, and the antenna spacing d is smaller than half a wavelengthIn the case of (2), a unique value of the direction angle can be determined; and when the antenna spacing d is equal to or greater than half wavelength +. >In this case, the determined direction angle is not unique, and the problem of angle measurement ambiguity may occur.

In the existing protocol, in order to solve the problem of angle measurement ambiguity in an NR positioning scene, a base station reports a plurality of possible angle measurement results to an LMF, the LMF synthesizes the angle measurement results of a plurality of base stations, and a final direction angle is determined by removing the error angle measurement results through a plurality of post-processing algorithms. However, when the number of base stations is small (e.g., 2), this method cannot exclude the wrong direction angle, i.e., cannot solve the problem of ambiguity of the angle measurement. In addition, the existing protocol also does not relate to how to solve the problem of angle measurement ambiguity in a sidelink positioning scene.

Therefore, the application provides a communication method, which can determine a unique direction angle according to phase information of reference signals on different frequency resources by measuring the phase information, so that the problem of angle measurement ambiguity can be solved, and particularly, the problem of angle measurement ambiguity when the antenna spacing is more than or equal to half wavelength can be solved.

As shown in fig. 4, the method 400 involves interaction between a terminal device and a first device.

In one example, if the method 400 is applied to a sidelink location scenario, the first device may be a terminal device.

For example, if the method 400 is applied to the sidelink positioning scenario shown in fig. 1, the terminal device may be the terminal device 110 shown in fig. 1, and the first device may be the terminal device 120 shown in fig. 1.

For another example, if the method 400 is applied to the sidelink positioning scenario shown in fig. 1, the terminal device may be the terminal device 120 shown in fig. 1, and the first device may be the terminal device 110 shown in fig. 1.

In another example, the first device may be an access network device if the method 400 is applied to an NR positioning scenario.

For example, if the method 400 is applied to an NR positioning scenario as shown in fig. 2, the terminal device may be the terminal device 210 in fig. 2, and the first device may be the access network device 220 or the access network device 230 shown in fig. 2.

For example, the method 400 shown in fig. 4 may include S401 and S402, and the various steps in the method 400 are described in detail below.

S401, the first device transmits a reference signal on a plurality of different frequency resources. Correspondingly, the terminal device receives reference signals on a plurality of different frequency resources.

In one possible implementation manner, the first device may be a single-antenna terminal device or a multi-antenna terminal device, and when the first device is a multi-antenna terminal device, the first device sends reference signals carried on a plurality of different frequency resources through the same antenna. Correspondingly, the terminal device receives reference signals carried on a plurality of different frequency resources on a plurality of antennas.

The terminal device may include a first antenna and a second antenna, and may receive the reference signals carried on the first frequency resource and the second frequency resource through the first antenna and the reference signals carried on the first frequency resource and the second frequency resource through the second antenna, so that the first phase, the second phase, the third phase, and the fourth phase may be determined. The first phase is a phase of a reference signal of a first frequency resource received by the first antenna, and the second phase is a phase of a reference signal of the first frequency resource received by the second antenna. The third phase is a phase of a reference signal of the second frequency resource received by the first antenna, and the fourth phase is a phase of a reference signal of the second frequency resource received by the second antenna.

In another possible implementation manner, the first device may be a terminal device with multiple antennas, or may be an access network device with multiple antennas, and each antenna of the multiple antennas may correspond to a respective port. The first device may transmit reference signals carried on a plurality of different frequency resources through a plurality of antennas, and correspondingly, the terminal device may receive reference signals carried on a plurality of different frequency resources transmitted through different antennas. It may also be understood that the first device may send reference signals carried on a plurality of different frequency resources through a plurality of ports, and correspondingly, the terminal device may receive reference signals carried on a plurality of different frequency resources sent through different ports.

It should be noted that the terminal device may be a single antenna device and receive the reference signal on only one antenna; the terminal device may also be a terminal device having multiple antennas and may receive reference signals on the multiple antennas.

Illustratively, the first device transmits reference signals on the first frequency resource through the first port and the second port, respectively; and transmitting the reference signals on the second frequency resource through the third port and the fourth port respectively. Correspondingly, the terminal equipment receives a reference signal on a first frequency resource sent by a first port and a reference signal on the first frequency resource sent by a second port; and receiving the reference signal on the second frequency resource transmitted by the third port and the reference signal on the second frequency resource transmitted by the fourth port, thereby determining the first phase, the second phase, the third phase and the fourth phase. The first phase is the phase of the received reference signal on the first frequency resource sent by the first port, and the second phase is the phase of the received reference signal on the first frequency resource sent by the second port; the third phase is the phase of the received reference signal on the second frequency resource transmitted by the third port, and the fourth phase is the phase of the received reference signal on the second frequency resource transmitted by the fourth port.

Alternatively, the reference signal may carry identification information for identifying the reference signal, an antenna transmitting the reference signal, or a port transmitting the reference signal.

The first device may send the reference signal on a plurality of different frequency resources, where the reference signal may be carried on a plurality of different frequency resources, or may be carried by a plurality of different frequency resources together. That is, the terminal device may receive a plurality of different reference signals, the plurality of different reference signals being carried on a plurality of different frequency resources; the terminal device may also receive a reference signal, which may be carried in common by a plurality of different frequency resources.

For example, the first device may transmit reference signals carried on the first frequency resource and the second frequency resource, and the terminal device may receive the reference signals carried on the first frequency resource and the second frequency resource. That is, the terminal device may receive a first reference signal and a second reference signal, respectively, the first reference signal being carried on a first frequency resource and the second reference signal being carried on a second frequency resource; the terminal device may also receive a first reference signal carried by the first frequency resource and the second frequency resource in common.

It should be understood that in the embodiment of the present application, the frequency resource may refer to a frequency resource at a Resource Element (RE) level, or refer to a frequency resource at a bandwidth part (BWP) level, or refer to a frequency resource at a component carrier (component carrier, CC) level, which is not limited by the present application.

S402, the terminal equipment sends first information. Correspondingly, the first device receives the first information from the terminal device.

The first information may be used to indicate a direction angle. It should be understood that the first information may directly indicate the direction angle, i.e. the first information is the direction angle, or the first information may indirectly indicate the direction angle, i.e. the first information carries information (e.g. position information) determining the direction angle.

The first information may be determined based on a reference signal carried on a first frequency resource and a reference signal carried on a second frequency resource. Still further, the first information may be determined based on a phase measurement of a reference signal carried on the first frequency resource and a phase measurement of a reference signal carried on the second frequency resource.

Optionally, the phase measurement result of the reference signal on the first frequency resource is determined according to a first phase and a second phase, wherein the first phase is the phase of the reference signal of the first frequency resource received by the first antenna, and the second phase is the phase of the reference signal of the first frequency resource received by the second antenna; the phase measurement of the reference signal on the second frequency resource is determined based on a third phase and a fourth phase, the third phase being the phase of the reference signal of the second frequency resource received by the first antenna, the fourth phase being the phase of the reference signal of the second frequency resource received by the second antenna.

Optionally, the phase measurement result of the reference signal on the first frequency resource is determined according to a first phase and a second phase, wherein the first phase is the phase of the reference signal on the first frequency resource transmitted by the received first port, and the second phase is the phase of the reference signal on the first frequency resource transmitted by the received second port; the phase measurement of the reference signal on the second frequency resource is determined based on a third phase and a fourth phase, the third phase being the phase of the received reference signal on the second frequency resource transmitted by the third port, and the fourth phase being the phase of the received reference signal on the second frequency resource transmitted by the fourth port.

In one example, the first information may include location information and positioning assistance information for indicating a relative position of the first antenna and the second antenna of the terminal device. The details of this part are described in detail with reference to the embodiment in fig. 5, and will not be described here.

In an example, the first information may be a direction angle, and the direction angle may be an arrival angle, and details related to this portion may be described in detail with reference to an embodiment in fig. 6 below, which is not described herein.

In one example, the first information may include location information, and the first device may determine a direction angle from the received location information and its own positioning assistance information, and the direction angle is an off angle, the positioning assistance information being used to indicate the relative locations of the first antenna and the second antenna of the first device. The details of this part are described in detail with reference to the embodiments in fig. 7, 9 and 10, and are not described here again.

Optionally, the terminal device may send location information to the first device, where the first information includes location information, and the first device may determine a direction angle according to the location information and positioning auxiliary information of the first device, where the direction angle is an exit angle, and the positioning auxiliary information is used to indicate a relative location of an antenna of the first device.

If the first device is a terminal device, the terminal device may directly send the location information to the first device. I.e. communication is directly between the terminal device and the first device.

If the first device is an access network device, the terminal device may send location information to the access network device through the core network device. The terminal device sends the position information to the core network device, and the core network device forwards the position information to the first device.

In an example, the first information may be a direction angle, and the direction angle may be an departure angle, and details related to this portion will be described in detail in connection with the embodiment in fig. 8, which is not described herein.

Alternatively, the terminal device may receive positioning assistance information sent by the first device before sending the first information, where the positioning assistance information is used to indicate the relative position of the antenna of the first device. The terminal device may determine a direction angle according to the location information and the positioning assistance information, where the direction angle is an exit angle, and send the exit angle to the first device, where the first information includes the exit angle.

It should be understood that the location information is used to indicate at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference. Wherein the first phase difference information is obtained from the first phase and the second phase, the second phase difference information is obtained from the third phase and the fourth phase, the third phase difference information is obtained from the first phase and the third phase, the fourth phase difference information is obtained from the second phase and the fourth phase, and the difference information of the phase difference is obtained from the first phase, the second phase, the third phase, and the fourth phase.

Further, the first phase information includes a first phase; the second phase information includes a second phase; the third phase information includes a third phase; the fourth phase information includes a fourth phase; the first phase difference information includes a first phase difference; the second phase difference information includes a second phase difference; the third phase difference information includes a third phase difference; the fourth phase difference information includes a fourth phase difference; the difference information of the phase differences includes a difference of the first phase difference or a difference of the second phase difference. The first phase difference is a phase difference between the first phase and the second phase; the second phase difference is the phase difference between the third phase and the fourth phase; the third phase difference is the phase difference between the first phase and the third phase; the fourth phase difference is the phase difference between the second phase and the fourth phase; the difference value of the first phase difference is the difference value of the first phase difference and the second phase difference; the difference between the second phase difference and the fourth phase difference is the difference between the third phase difference and the fourth phase difference.

By way of example and not limitation, the first device may transmit reference signals on two frequency resources, the corresponding frequency resources being f, respectively ₁ And f ₂ The phase differences between the two antennas of the terminal device on the two frequency resources are respectively:

Subtracting equation 7 from equation 8 yields:

expanding mod2 pi in equation 9, can yield:

further, it is possible to obtain:

when the distance between the two antennasWhen (i.e.)>Phase difference->The value range is [0,2 pi ]]，The value range of (2) is +.>The k in the formula 11 can only take one value, that is, dcos θ can take a unique value, so that the obtained direction angle θ can take a unique value, and the problem of angle measurement ambiguity does not exist.

When f ₂ -f ₁ Far smaller than f ₁ And f ₂ In the time-course of which the first and second contact surfaces,far greater than +.>And->That is, the distance between the antennas can be made to be within a larger range, enabling no angular ambiguity.

For example, f ₁ 3GHz, f ₂ 3.1GHz, thenThat is, if only the frequency f is utilized ₁ Or f ₂ The lower phase is measured and then, for the determinationThe distance between the antennas must be less than 5cm for the unique direction angle. If the frequencies f are used simultaneously ₁ And f ₂ The phase position is used for angle measurement, so that the antenna distance is smaller than 150cm, and a unique direction angle can be obtained, namely the problem of angle measurement ambiguity can be solved.

In the embodiment of the application, the terminal equipment receives the reference signals carried on different frequency resources and sends the first information for indicating the direction angle, so that other equipment can acquire the direction angle according to the first information. Since the first information is determined based on the phase measurement results of the reference signals carried on different frequency resources and the first information is used for indicating the direction angle, it can be understood that the direction angle is also determined based on the phase measurement results of the reference signals carried on different frequency resources, and thus the obtained direction angle is unique in both NR and sidelink positioning scenes, and the problem of angle measurement ambiguity can be solved.

Fig. 5 is a schematic flow chart of another communication method provided by an embodiment of the present application. The method 500 shown in fig. 5 may include S501 to S507, mainly related to in a sidelink positioning scenario, where the terminal device 520 (an example of the first device shown in fig. 4) sends reference signals carried on a plurality of different frequency resources through the same antenna, the terminal device 510 (an example of the terminal device shown in fig. 4) receives the reference signals carried on the plurality of different frequency resources through the plurality of antennas, and after that, the terminal device 510 may measure the reference signals carried on the plurality of different frequency resources to obtain phase information, and send the phase information to the terminal device 520, and the terminal device 520 completes the calculation of the arrival angle according to the phase information. The various steps in the method 500 are described in detail below.

S501, the terminal device 520 sends a request message, and correspondingly, the terminal device 510 receives the request message.

The request message is used for requesting interaction with the terminal device 510 for second information, that is, for requesting interaction with the terminal device 510 for configuration information and capability information, where the configuration information may include first frequency resource information and transmission mode information of a reference signal, and the capability information may include a type of content included in the location information.

Illustratively, the request message includes at least one of: the first frequency information, the transmission mode information of the reference signal, and the type of content included in the location information.

The first frequency information is used to indicate the frequency of the optional reference signal, i.e. the first frequency information may indicate on which/which frequency resources the terminal device 520 transmits the reference signal, further, the terminal device 510 may determine whether there is a problem of angular ambiguity according to the frequency resources on which the reference signal is transmitted.

The transmission scheme information of the reference signal may include a frequency hopping transmission scheme or a carrier aggregation transmission scheme. The frequency hopping transmission scheme may be understood as time-sharing transmission of reference signals carried on a plurality of different frequency resources, e.g. the terminal device 520 first transmits a first reference signal carried on a first frequency resource and then transmits a second reference signal carried on a second frequency resource. A carrier aggregation transmission manner may be understood as transmitting reference signals carried on a plurality of different frequency resources, e.g. the terminal device 520 transmits a first reference signal carried on a first frequency resource and a second frequency resource.

The type of content included in the position information may include phase information, phase difference information, or difference information of the phase difference.

S502, the terminal device 510 transmits configuration information and capability information to the terminal device 520. Correspondingly, the terminal device 520 receives the configuration information and the capability information transmitted by the terminal device 510.

Before S502, the terminal device 510 may determine whether the antenna spacing of the terminal device 510 is equal to or greater than a half wavelength according to the first frequency information, thereby determining whether there is a problem of angular ambiguity.

Alternatively, when the first frequency information includes a single frequency resource, the terminal device 510 may determine whether its own antenna spacing is greater than or equal to a half wavelength according to the single frequency resource. If the terminal device 510 determines that the antenna spacing of itself is less than half a wavelength under the frequency resource, that is, the reference signal sent by the terminal device 510 under the frequency resource does not have the problem of angular ambiguity, the terminal device 510 may instruct the terminal device 520 to send the reference signal under the single frequency resource. If the terminal device 510 determines that the antenna spacing of the terminal device 510 is greater than or equal to half a wavelength under the single frequency resource, that is, the reference signal sent by the terminal device 510 under the frequency resource has a problem of angular ambiguity, the terminal device 510 may send recommendation/requirement information of the frequency resource of the reference signal to the terminal device 520, which is used to instruct the terminal device 520 to send the reference signal on multiple frequency resources. Note that, the recommended/required information of the reference signal frequency resource may indicate a range of the frequency in which the terminal device 520 transmits the reference signal, where the range may be an upper limit of the frequency, a lower limit of the frequency, or an upper limit and a lower limit of the frequency; the recommended/required information of the frequency resources of the reference signal may further indicate a range of a frequency difference between the respective frequency resources of the reference signal transmitted by the terminal device 520, which may be an upper limit of the frequency difference, a lower limit of the frequency difference, or an upper limit and a lower limit of the frequency difference.

Alternatively, when the first frequency information includes a plurality of frequency resources, the terminal device 510 may determine whether the antenna pitches of itself are equal to or greater than a half wavelength under the plurality of frequency resources. If the terminal device 510 determines that a certain frequency resource among the plurality of frequency resources satisfies that the antenna spacing of the terminal device 510 is less than half a wavelength, the terminal device 510 determines that the problem of angular ambiguity does not exist in transmitting the reference signal under the certain frequency resource. Accordingly, the terminal device 510 may instruct the terminal device 520 to transmit the reference signal on a certain frequency resource of the plurality of frequency resources. If the terminal device 510 determines that the antenna pitches of the terminal device 510 are greater than or equal to half a wavelength under the multiple frequency resources, the terminal device 510 determines that the problem of angular ambiguity exists in transmitting the reference signal under the multiple frequency resources. Accordingly, the terminal device 510 may send recommendation/requirement information of the reference signal frequency resources to the terminal device 520 for instructing the terminal device 520 to send the reference signal on the plurality of frequency resources. Note that, the recommended/required information of the reference signal frequency resource may indicate a range of the frequency in which the terminal device 520 transmits the reference signal, where the range may be an upper limit of the frequency, a lower limit of the frequency, or an upper limit and a lower limit of the frequency; the recommended/required information of the frequency resources of the reference signal may further indicate a range of a frequency difference between the respective frequency resources of the reference signal transmitted by the terminal device 520, which may be an upper limit of the frequency difference, a lower limit of the frequency difference, or an upper limit and a lower limit of the frequency difference.

In S502, the terminal device 510 may transmit configuration information and capability information, i.e., second information, including at least one of: the recommended/required information of the reference signal frequency resource, the sending mode information of the reference signal, and the type of the content included in the location information, where the recommended/required information of the reference signal frequency resource is the frequency of the reference signal requested by the terminal device 510.

Alternatively, the configuration information and the capability information may carry recommendation/requirement information of the above-mentioned reference signal frequency resource. For example: the configuration information and capability information may instruct the terminal device 520 to select to transmit reference signals on a certain frequency resource or resources. Specifically, the information may indicate a range of frequencies at which the terminal device 520 transmits the reference signal, which may be an upper limit of the frequencies, a lower limit of the frequencies, or both the upper and lower limits of the frequencies; the message may also indicate a range of frequency differences between the respective frequency resources of the reference signal transmitted by the terminal device 520, which may be an upper limit of the frequency differences, a lower limit of the frequency differences, or both.

Optionally, the configuration information and the capability information may further carry transmission mode information of the recommended reference signal, where the transmission mode may be a frequency hopping transmission mode or a carrier aggregation transmission mode, which is not limited in the present application.

Optionally, the configuration information and the capability information may further indicate a type of content included in the location information reported by the terminal device 510, for example, whether the content included in the location information reported is phase information, phase difference information, difference information of phase difference, or a combination of the three information, which is not limited in the present application.

Optionally, the method 500 may further include S503: the terminal device 520 transmits a response message to the terminal device 510.

The response message is used to respond to whether or not to agree to transmit the reference signal in accordance with the configuration information and capability information provided by the terminal device 510. That is, the response message is used to indicate at least one of: the frequency of the reference signal, the transmission mode of the reference signal, and the type of content included in the position information are configured.

If the terminal device 520 completely conforms to the configuration and capability information transmitted by the terminal device 510, the terminal device 520 may not perform S503, i.e., transmit no response message. The terminal device 510 may determine that the terminal device 520 agrees to transmit the reference signal according to the configuration information and the capability information provided by the terminal device 510 without receiving the response message transmitted by the terminal device 520; the terminal device 520 may also transmit a response message to the terminal device 510, the response message indicating to the terminal device 510 that the terminal device 520 agrees to transmit the reference signal according to the configuration information and the capability information provided by the terminal device 510. For example, the response message may be directly represented using a flag bit.

If the terminal device 520 does not fully conform to the configuration and capability information sent by the terminal device 510, the terminal device 520 may send a response message to the terminal device 510 indicating at least one of: the configured frequency resource information, the transmission mode of the reference signal, and the type of content included in the location information.

Through S501 to S503, the interaction of the configuration information and the capability information, that is, the interaction of the second information, may be completed between the terminal device 510 and the terminal device 520, so that information such as frequency resource information of the reference signal, a transmission mode of the reference signal, and a type of content included in the location information may be determined.

S504, the terminal device 520 sends the reference signal on a plurality of different frequency resources. Correspondingly, the terminal device 510 may receive the reference signal on a plurality of different frequency resources.

It should be appreciated that terminal device 520 may be a single antenna device or a multiple antenna device. When the terminal device 520 has multiple antennas, the terminal device 520 should transmit the reference signal on at least the same antenna. The terminal device 510 may receive reference signals carried on different frequency resources on multiple antennas.

The terminal device 520 may transmit the reference signal on a plurality of different frequency resources according to the frequency resource information determined in S501 to S503, and the transmission mode of the reference signal may be a frequency hopping transmission mode or a carrier aggregation transmission mode, which is not limited in the present application.

S505, the terminal device 510 measures phases of reference signals transmitted by the terminal device 520 on a plurality of antennas, and determines position information.

It should be appreciated that the terminal device 510 may receive and measure reference signals transmitted by the terminal device 520 on a plurality of antennas and carried on a plurality of different frequency resources to obtain phase information, thereby determining location information. In addition, the reference signal may carry identification information for identifying the reference signal.

It should be understood that the phase measurement by the terminal device 510 may be performed by simultaneously measuring a plurality of antennas, or may be performed by switching antennas, which is not limited by the present application.

It should also be understood that the location information is used to indicate at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference. Wherein the first phase difference information is obtained from the first phase and the second phase, the second phase difference information is obtained from the third phase and the fourth phase, the third phase difference information is obtained from the first phase and the third phase, the fourth phase difference information is obtained from the second phase and the fourth phase, and the difference information of the phase difference is obtained from the first phase, the second phase, the third phase, and the fourth phase.

Alternatively, the location information may include phase information including a phase, an antenna identity associated with the phase, and a frequency resource identity.

The phase can be expressed asI.e. the terminal device 510 receives the reference signal on the mth antenna and measures the resulting phase under the reference signal of the nth frequency resource. That is, the phase needs to be associated with one antenna identity and one frequency resource identity at the same time, i.e. on which antenna the terminal device 510 receives the reference signal, and under what frequency resource the phase is measured.

Alternatively, the position information may include phase difference information.

The phase difference information includes a phase difference, two antenna identifications associated with the phase difference, and a frequency resource identification. The phase difference can be expressed asI.e., the terminal device 510 receives the reference signals on the mth antenna and the mth antenna, and measures the phase difference obtained by the reference signals under the nth frequency resource. Specifically, the->Can be expressed as:or->That is, the phase difference may be obtained by directly subtracting the two phases, or may be a value obtained by mod2 pi-operation of the obtained phase difference. That is, the phase difference needs to be associated with two antenna identities and one frequency resource identity at the same time, i.e. on which two antennas the terminal device 510 receives the reference signal, and the phase difference value measured under the reference signal of what frequency resource. Illustratively, h=m+1, that is, the phase difference information of the adjacent two antennas is reported.

The phase difference information also includes a phase difference, two frequency resource identifications associated with the phase difference, and an antenna identification. The phase difference can be expressed asI.e. the terminal device 510 receives the reference signal on the mth antenna, and measures the resulting phase difference under the reference signals of the nth frequency resource and the w-th frequency resource. Specifically, the- >Can be expressed as:Or->That is, the phase difference may be obtained by directly subtracting the two phases, or may be a value obtained by mod2 pi-operation of the obtained phase difference. That is, the phase difference needs to be associated with one antenna identity and two frequency resource identities at the same time. For example, w=n+1, that is, the phase difference information of two adjacent frequency resources of the same antenna is reported. Alternatively, the location information may beTo include difference information of the phase difference.

The difference information of the phase difference comprises the difference of the phase difference, two antenna identifications and two frequency resource identifications which are related by the difference of the phase difference, and the difference of the phase difference can be expressed as

Specifically, theCan be expressed as:Or->I.e. the difference between the phase difference of the mth antenna and the mth antenna of the terminal device 510 at the nth frequency resource and the phase difference at the w frequency resource or the value obtained by mod2 pi-operation of the difference of the obtained phase differences. Illustratively, h=m+1, w=n+1, i.e., difference information of phase differences of two adjacent antennas at two adjacent frequency resources.

Specifically, theCan be expressed as:Or->That is, this is a difference between the phase difference of the mth antenna and the phase difference of the nth and the nth antennas in the terminal 510 in the nth and the nth frequency resources, respectively, or a value obtained by mod2 pi-operation of the difference of the obtained phase differences. Illustratively, h=m+1, w=n+1, i.e., difference information of phase differences of two adjacent antennas at two adjacent frequency resources.

Besides the antenna identifier or the frequency resource identifier, the difference information of the phase difference information and the phase difference also indicates the phase difference making sequence or the phase difference making sequence, that is, the phase difference making sequence or the phase difference making sequence can be indicated by a display indication mode, or the phase difference making sequence can be indicated by an implicit indication mode.

In one example, the terminal device 510 may also transmit indication information simultaneously with the location information, where the indication information may directly indicate which two phases are different from each other by the phase difference information, and which two phases are different from each other by the phase difference information.

In another example, terminal device 510 and terminal device 520 may pre-define a rule that specifies a differencing order to be the preceding antenna identity/frequency resource identity minus the following antenna identity/frequency resource identity, or that specifies a differencing order to be the following antenna identity/frequency resource identity minus the preceding antenna identity/frequency resource identity. For example, the first phase difference information includes a first phase difference, a first frequency resource identification (f ₁ ) First antenna identification (r) ₁ ) And a second antenna identification (r ₂ ). Then according to the rule, assuming that the order of the difference is the preceding antenna identity minus the following antenna identity, the phase of the reference signal on the first frequency resource on the first antenna minus the phase of the reference signal on the first frequency resource on the second antenna can be determined according to the first phase difference, i.e., the available (r) ₁ -r ₂ ,f ₁ ) And (3) representing.

In yet another example, instead of using a common identity, each value in the phase difference information or the difference information of the phase differences carries a list of identities indicating on what antenna and on what frequency resource the value is obtained. For example, the first phase difference information includes a first phase difference, a first frequency resource identification (f ₁ ) First antenna identification (r) ₁ ) And a second antenna identification (r ₂ ). When reporting the first phase difference information, the first phase difference information can be represented by two identification lists, wherein the first list is a list of antenna identifications (a first antenna r ₁ Second antenna r ₂ ) The second list is a list of frequency resource identities (first frequency resource f ₁ First frequency resource f ₁ ) I.e. usable (r) ₁ ,f ₁ )-(r ₂ ,f ₁ ) And (3) representing.

It is understood that the position information may be at least one of phase information, phase difference information, and difference information of the phase difference. That is, the positional information may contain both the above-described phase, phase difference, and difference information of the phase difference, or may contain only one or more kinds of information thereof.

For example, assuming that the terminal device 510 has two antennas and the terminal device 520 transmits reference signals on two different frequency resources through the same antenna, the two antennas of the terminal device 510 may respectively measure the reference signals on the two different frequency resources to obtain the phase values as shown in table 1.

The first phase is a phase obtained by the terminal device 510 measuring a reference signal received by the first antenna and carried on the first frequency resource, that is, the first phase corresponds to the phase of the reference signal received by the first antenna and carried on the first frequency resource; the second phase is a phase obtained by the terminal device 510 measuring the reference signal received by the second antenna and carried on the first frequency resource, that is, the second phase corresponds to the phase of the reference signal received by the second antenna and carried on the first frequency resource; the third phase is a phase obtained by the terminal device 510 measuring the reference signal received by the first antenna and carried on the second frequency resource, that is, the third phase corresponds to the phase of the reference signal received by the first antenna and carried on the second frequency resource; the fourth phase is a phase obtained by the terminal device 510 measuring the reference signal received by the second antenna and carried on the second frequency resource, i.e. the fourth phase corresponds to the phase of the reference signal received by the second antenna and carried on the second frequency resource.

TABLE 1

	First antenna	Second antenna
			First frequency resource	First phase of	Second phase of
Second frequency resource	Third phase position	Fourth phase

As shown in table 1, the location information transmitted by the terminal device 510 is used to indicate at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the first phase difference; difference information of the second phase difference.

The first phase information comprises a first phase and an identifier of a first frequency resource, and the first phase information also comprises an identifier of a first antenna or an identifier of a reference signal received on the first frequency resource through the first antenna; the second phase information comprises a second phase and an identification of the first frequency resource, and the second phase information further comprises an identification of a second antenna or an identification of a reference signal received on the first frequency resource through the second antenna; the third phase information comprises a third phase and an identification of a second frequency resource, and the third phase information further comprises an identification of the first antenna or an identification of a reference signal received on the second frequency resource through the first antenna; the fourth phase information includes an identification of a fourth phase and a second frequency resource, and the fourth phase information further includes an identification of the second antenna or an identification of a reference signal received on the second frequency resource through the second antenna.

The first phase difference information includes a first phase difference, an identification of a first frequency resource, an identification of a first antenna, and an identification of a second antenna, or the first phase difference information includes a first phase difference, an identification of a first frequency resource, an identification of a reference signal received on the first frequency resource through the first antenna, and an identification of a reference signal received on the first frequency resource through the second antenna. The first phase difference is a phase difference between the first phase and the second phase.

The second phase difference information includes a second phase difference, an identification of a second frequency resource, an identification of a first antenna, and an identification of a second antenna, or the second phase difference information includes a second phase difference, an identification of a second frequency resource, an identification of a reference signal received through the first antenna on the second frequency resource, and an identification of a reference signal received through the second antenna on the second frequency resource. The second phase difference is a phase difference between the third phase and the fourth phase.

The third phase difference information includes a third phase difference, an identification of the first frequency resource, and an identification of the second frequency resource, and the third phase difference information further includes an identification of the first antenna or an identification of a reference signal received through the first antenna. The third phase difference is a phase difference between the first phase and the third phase.

The fourth phase difference information includes a fourth phase difference, an identification of the first frequency resource, and an identification of the second frequency resource, and further includes an identification of the second antenna or an identification of a reference signal received through the second antenna. The fourth phase difference is a phase difference between the second phase and the fourth phase.

The difference information of the first phase difference includes a difference of the first phase difference, an identification of the first frequency resource, an identification of the second frequency resource, an identification of the first antenna, and an identification of the second antenna, or the difference information of the first phase difference includes a difference of the first phase difference, an identification of the first frequency resource, an identification of the second frequency resource, an identification of a reference signal received through the first antenna, and an identification of a reference signal received through the second antenna. The difference value of the first phase difference is the difference value of the first phase difference and the second phase difference.

The difference information of the second phase difference includes a difference of the second phase difference, an identification of the first frequency resource, an identification of the second frequency resource, an identification of the first antenna, and an identification of the second antenna, or the difference information of the second phase difference includes a difference of the second phase difference, an identification of the first frequency resource, an identification of the second frequency resource, an identification of a reference signal received through the first antenna, and an identification of a reference signal received through the second antenna. The difference value of the second phase difference is the difference value of the third phase difference and the fourth phase difference.

It should be noted that the antenna identifier may be represented by a port identifier. That is, the identification information carried in the reference signal may be used to identify the reference signal, may also be used to identify the antenna receiving the reference signal, and may also be used to identify the port receiving the reference signal. For example, the terminal device includes a first antenna and a second antenna, where the reference signal on the first frequency resource received by the first port and the reference signal on the second frequency resource received by the third port are both reference signals received through the first antenna, and the reference signal on the first frequency resource received by the second port and the reference signal on the second frequency resource received by the fourth port are both reference signals received through the second antenna. In this case, the identity of the first antenna may be replaced with the first port identity and the third port identity, and the identity of the second antenna may be replaced with the second port identity and the fourth port identity.

It should be understood that the terminal device 520 may also transmit reference signals on more resource frequencies, the terminal device 510 may also use more antennas, receive reference signals transmitted by the terminal device 520 on more frequency resources, and measure phases of the reference signals, which is not limited in this regard.

S506, the terminal device 510 transmits the location information and the positioning assistance information to the terminal device 520. Correspondingly, the terminal device 520 receives the location information and the positioning assistance information transmitted by the terminal device 510.

It should be understood that the terminal device 510 may transmit the location information measured through S505 to the terminal device 520. The related content of the location information may refer to the description in S505, and will not be described here again.

Optionally, the terminal device 510 may also send positioning assistance information to the terminal device 520, which positioning assistance information is used to indicate the relative position of the antennas of the terminal device 510.

If the terminal device 510 includes two antennas, identified as a first antenna and a second antenna, the positioning assistance information is used to indicate the relative positions of the first antenna and the second antenna. If the terminal device 510 includes three antennas, identified as a first antenna, a second antenna, and a third antenna, the positioning assistance information is used to indicate: the relative positions of the first antenna, the second antenna and the third antenna. It should be appreciated that the relative positions of which two antennas the positioning assistance information is may also be indicated at the same time as the positioning assistance information is reported. The indication mode also comprises display indication or implicit indication, namely, indication information can be reported at the same time of reporting the positioning auxiliary information, and the indication information is used for indicating which two antennas are in relative positions, or determining which two antennas are in relative positions according to the reporting sequence of the positioning auxiliary information.

The relative positions of the antennas may be distances between the antennas, or may be position coordinates of the respective antennas at a certain coordinate. For example, in the case where a plurality of antennas constitute a linear array, the distance between the antennas can be given; in the case of an area array composed of multiple antennas, specific position coordinates need to be given.

The distance or position coordinates may be in the form of absolute values, and the units of coordinates may be millimeters, centimeters, decimeters, meters, and the like. The distance and position may be converted from a wavelength value at a certain frequency, for example, the distance between the first antenna and the second antenna is 10cm, and the reference wavelength is 10cm, and then the distance may be represented by 1.

It is to be understood that the positioning assistance information in S505 may be sent to the terminal device 520 together with the location information through one signaling, or may be sent to the terminal device 520 through a plurality of signaling, and the sending order of the positioning assistance information is not limited. Optionally, the positioning assistance information may also be sent to the terminal device 520 in S502, which is not limited by the present application.

S507, the terminal device 520 calculates the angle of arrival.

In this step, the terminal device 520 may calculate an angle of arrival from the received location information and positioning assistance information, wherein the positioning assistance information is used to indicate the relative position of the antenna of the terminal device 510.

In one example, if the location information includes first phase information, second phase information, third phase information, and fourth phase information, and the positioning assistance information includes a relative position of the first antenna and the second antenna, the terminal device 520 may determine the angle of arrival according to equation 3, equation 7, equation 8, and equation 10.

In another example, if the location information includes first phase difference information and second phase difference information, or third phase difference information and fourth phase difference information, and the positioning assistance information includes the relative positions of the first antenna and the second antenna, the terminal device 520 may determine the angle of arrival according to equation 7, equation 8, and equation 10.

In yet another example, if the location information includes difference information of the first phase difference or difference information of the second phase difference, the positioning assistance information includes a relative position of the first antenna and the second antenna, the terminal device 520 may determine the arrival angle according to equation 10.

In the embodiment of the application, the terminal equipment can measure the phases of the reference signals borne on a plurality of different frequency resources through different antennas, determine the position information and send the position information to the first equipment, so that the first equipment can determine a unique arrival angle according to the position information and the positioning auxiliary information, and further the problem of angle measurement ambiguity can be solved.

Fig. 6 is a schematic flow chart of another communication method provided by an embodiment of the present application. The method 600 shown in fig. 6 may include S601 to S606, mainly related to in a sidelink positioning scenario, where the terminal device 620 (an example of the first device shown in fig. 4) sends reference signals on different frequency resources through the same antenna, and after the terminal device 610 (an example of the terminal device shown in fig. 4) receives the reference signals on multiple different frequency resources through multiple antennas, the reference signals on multiple different frequency resources may be measured to obtain phase information, and the calculation of the arrival angle is completed according to the phase information. The various steps in the method 600 are described in detail below.

S601, the terminal device 620 sends a request message to the terminal device 610. Correspondingly, the terminal device 610 receives the request message sent by the terminal device 620.

S602, the terminal device 610 transmits configuration information and capability information to the terminal device 620. Correspondingly, the terminal device 620 receives the configuration information and the capability information transmitted by the terminal device 610.

S603, the terminal device 620 transmits a response message to the terminal device 610. Correspondingly, the terminal device 610 receives the response message sent by the terminal device 620.

S604, the terminal device 620 transmits the reference signal on a plurality of different frequency resources. Correspondingly, the terminal device 610 may receive the reference signal on a plurality of different frequency resources.

S605, the terminal device 610 measures the phases of the reference signals transmitted by the terminal device 620 on a plurality of antennas, and determines the location information.

S601 to S605 may refer to S501 to S505, and are not described here again for brevity.

S606, the terminal device 610 calculates an angle of arrival.

In this step, the terminal device 610 may calculate an angle of arrival from the location information and its own positioning assistance information, wherein the positioning assistance information is used to indicate the relative position of the antenna of the terminal device 610. The specific content of the calculated arrival angle may refer to S507, and will not be described herein.

S606, the terminal device 610 transmits the calculated arrival angle to the terminal device 620. Correspondingly, the terminal device 620 receives the angle of arrival transmitted by the terminal device 610.

In this embodiment of the present application, the terminal device may measure phases of reference signals carried on a plurality of different frequency resources through different antennas, and determine location information, so that the terminal device may determine a unique angle of arrival according to the location information, and send the angle of arrival to the first device, and because the angle of arrival is unique, the problem of angle measurement ambiguity can be solved.

Fig. 7 is a schematic flow chart of another communication method provided by an embodiment of the present application. The method 700 shown in fig. 7 may include S701 to S707 mainly related to that in the sidelink positioning scenario, the terminal device 720 (an example of the first device shown in fig. 4) has multiple antennas, and is capable of transmitting reference signals on multiple different frequency resources of the multiple antennas, and after the terminal device 710 (an example of the terminal device shown in fig. 4) receives the reference signals on multiple different frequency resources through the same antenna, the terminal device 710 may measure the reference signals on the multiple different frequency resources to obtain phase information, and send the phase information to the terminal device 720, and the terminal device 720 performs the resolution of the departure angle according to the phase information. The various steps in the method 700 are described in detail below.

S701, the terminal device 710 transmits a request message to the terminal device 720. Correspondingly, the terminal device 720 receives the request message sent by the terminal device 710.

It should be understood that S701 is an optional step, and when the terminal device 710 initiates a direction angle measurement request, or initiates a positioning request, the terminal device 710 needs to send a request message to the terminal device 720.

Illustratively, the request message includes at least one of: frequency resource information of a reference signal that can be received by the terminal device 710, transmission scheme information of the reference signal, and the type of content included in the location information.

S702, the terminal device 720 transmits configuration information and capability information to the terminal device 710. Correspondingly, the terminal device 710 receives the configuration information and the capability information transmitted by the terminal device 720.

The specific content of this step may refer to S502.

In S702, the terminal device 720 may transmit configuration information and capability information, i.e., second information, including at least one of: the recommended/required information of the reference signal frequency resource, the sending mode information of the reference signal, and the type of the content included in the location information, where the recommended/required information of the reference signal frequency resource is the frequency of the reference signal requested by the terminal device 720.

The transmission method of the reference signal may be variable in the dimension of the frequency resource, or may be variable in the dimension of the antenna resource. The terminal device 720 may use a frequency hopping transmission mode or a carrier aggregation transmission mode on the frequency resource; the terminal device 720 may use a transmission scheme of switching antennas or a multi-antenna simultaneous transmission scheme on the antenna resources. The transmission mode of the switching antenna can be understood as that one antenna starts to transmit the reference signal, then the antenna is disconnected, and the other antenna is opened and used for transmitting the reference signal; the multi-antenna simultaneous transmission mode can be understood as that all antennas simultaneously transmit reference signals, each reference signal has a logical port identifier, and only the logical port identifier and the physical antenna are associated, so that it can be distinguished from which antenna each reference signal is transmitted from.

That is, the transmission method of the reference signal may include any one of the following: the transmission mode of the frequency hopping and switching antenna, the transmission mode of the carrier aggregation and switching antenna, the transmission mode of the frequency hopping and multi-antenna simultaneously, and the transmission mode of the carrier aggregation and multi-antenna simultaneously.

S703, the terminal device 710 transmits a response message to the terminal device 720. Correspondingly, the terminal device 720 receives the response message sent by the terminal device 710.

This step may refer to S503, and will not be described here again for brevity.

Through S701 to S703, the interaction of the configuration information and the capability information, that is, the interaction of the second information, may be completed between the terminal device 720 and the terminal device 710, so that the frequency resource information of the reference signal, the transmission mode of the reference signal, and the type information of the content included in the location information may be determined.

S704, the terminal device 720 transmits the reference signal on multiple frequency resources of multiple antennas. Correspondingly, the terminal device 710 receives reference signals on a plurality of frequency resources.

The terminal device 720 may transmit reference signals on multiple frequency resources for multiple antennas. The transmission mode of the reference signal may include any one of the following: the transmission method of the frequency hopping and switching antenna, the transmission method of the carrier aggregation and switching antenna, the transmission method of the frequency hopping and multi-antenna simultaneous transmission method, and the transmission method of the carrier aggregation and multi-antenna simultaneous transmission method are not limited in this regard.

Correspondingly, the terminal device 710 may at least receive reference signals transmitted by the terminal device 720 on a plurality of frequency resources. The terminal device 710 may have a single antenna or may have multiple antennas. When the terminal device 710 has a plurality of antennas, the terminal device 710 may receive and measure the reference signal on the same antenna.

For example, the first device may send reference signals on the first frequency resource through the first port and the second port, respectively; and transmitting the reference signals on the second frequency resource through the third port and the fourth port respectively. Correspondingly, the terminal equipment receives a reference signal on a first frequency resource sent by a first port and a reference signal on the first frequency resource sent by a second port; and receiving the reference signal on the second frequency resource transmitted by the third port and the reference signal on the second frequency resource transmitted by the fourth port.

That is, the first device includes a first antenna and a second antenna, and the reference signal on the first frequency resource transmitted by the first port and the reference signal on the second frequency resource transmitted by the third port are both reference signals transmitted through the first antenna, and the reference signal on the first frequency resource transmitted by the second port and the reference signal on the second frequency resource transmitted by the fourth port are both reference signals transmitted through the second antenna.

S705, the terminal device 710 measures the phase of the reference signal transmitted by the terminal device 720, and determines the location information.

It should be noted that, the terminal device 710 may measure phases of reference signals transmitted by the terminal device 720 on a plurality of frequency resources to determine the location information. The terminal device 710 may have a single antenna or may have multiple antennas. When the terminal device 710 has multiple antennas, the terminal device 710 should measure the reference signal at least on the same antenna.

It should be understood that the position information may include phase information and/or phase difference information and/or difference information of phase differences, which the present application is not limited to.

The reference signal carries identification information, and the identification information is used for identifying the reference signal, an antenna for transmitting the reference signal, or a port for transmitting the reference signal. It will be appreciated that each reference signal has a logical port identity, and that only the logical port identity and the physical antenna need be associated to distinguish from which antenna the reference signal was transmitted.

That is, the phase information is associated with at least one of the following: an antenna identity and a frequency identity, a port identity and a frequency identity, a reference signal identity and a frequency identity; the phase difference information is associated with at least one of the following: identification of two antennas and identification of one frequency, identification of two ports and identification of one frequency, identification of two reference signals and identification of one frequency, identification of one antenna and identification of two frequencies, identification of two ports and identification of two frequencies, identification of one reference signal and identification of two frequencies; the difference information of the phase differences is simultaneously associated with at least one of the following: identification of two antennas and identification of two frequencies, identification of four ports and identification of two frequencies, identification of two reference signals and identification of two frequencies. The specific content of this portion may refer to S505, and will not be described herein.

For example, assuming that the terminal device 720 has two antennas, namely a first antenna and a second antenna, the reference signal sent through the first antenna may carry the first port identifier or the third port identifier, and the reference signal sent through the second antenna may carry the second port identifier or the third port identifier.

The terminal device 710 obtains the phase values shown in table 2 by measuring reference signals on a plurality of different frequency resources. The first phase corresponds to the phase of the reference signal on the first frequency resource sent by the first port, the second phase corresponds to the phase of the reference signal on the first frequency resource sent by the second port, the third phase corresponds to the phase of the reference signal on the second frequency resource sent by the third port, and the fourth phase corresponds to the phase of the reference signal on the second frequency resource sent by the fourth port.

TABLE 2

The location information sent by the terminal device 710 is used to indicate at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the first phase difference; difference information of the second phase difference.

Wherein the first phase information may include at least one of: a first phase, an identification of a first antenna, and an identification of a first frequency resource; a first phase, a first port identification, and an identification of a first frequency resource; the first phase, an identification of a reference signal transmitted by the first antenna on the first frequency resource, and an identification of the first frequency resource.

The second phase information may include at least one of: a second phase, an identification of a second antenna, and an identification of a first frequency resource; a second phase, a second port identification, and an identification of the first frequency resource; the second phase, an identification of a reference signal transmitted by the second antenna on the first frequency resource, and an identification of the first frequency resource.

The third phase information may include at least one of: a third phase, an identification of the first antenna, and an identification of the second frequency resource; a third phase, a third port identification, and an identification of a second frequency resource; the third phase, an identification of a reference signal transmitted by the first antenna on the second frequency resource, and an identification of the second frequency resource.

The fourth phase information may include at least one of: a fourth phase, an identification of a second antenna, and an identification of a second frequency resource; a fourth phase, a fourth port identification and an identification of a second frequency resource; the fourth phase, an identification of a reference signal transmitted by the second antenna on the second frequency resource, and an identification of the second frequency resource.

The first phase difference information may include at least one of: the method comprises the steps of a first phase difference, identification of a first antenna, identification of a second antenna and identification of a first frequency resource; a first phase difference, a first port identification, a second port identification, and an identification of a first frequency resource; the first phase difference, an identification of a reference signal transmitted by the first port on the first frequency resource, an identification of a reference signal transmitted by the second port on the first frequency resource, and an identification of the first frequency resource. The first phase difference is a phase difference between the first phase and the second phase.

The second phase difference information may include at least one of: a second phase difference, an identification of the first antenna, an identification of the second antenna, and an identification of the second frequency resource; a second phase difference, a third port identification, a fourth port identification, and an identification of a second frequency resource; the second phase difference, an identification of a reference signal transmitted by the third port on the second frequency resource, an identification of a reference signal transmitted by the fourth port on the second frequency resource, and an identification of the second frequency resource. The second phase difference is a phase difference between the third phase and the fourth phase.

The third phase difference information may include at least one of: a third phase difference, an identification of the first antenna, an identification of the first frequency resource, and an identification of the second frequency resource; a third phase difference, a first port identification, a third port identification, an identification of a first frequency resource, and an identification of a second frequency resource; the third phase difference, an identification of a reference signal transmitted by the first port on the first frequency resource, an identification of a reference signal transmitted by the third port on the second frequency resource, an identification of the first frequency resource, and an identification of the second frequency resource. The third phase difference is a phase difference between the first phase and the third phase.

The fourth phase difference information may include at least one of: a fourth phase difference, an identification of the second antenna, an identification of the first frequency resource, and an identification of the second frequency resource; a fourth phase difference, a second port identification, a fourth port identification, an identification of the first frequency resource and an identification of the second frequency resource; the fourth phase difference, an identification of a reference signal transmitted by the second port on the first frequency resource, an identification of a reference signal transmitted by the fourth port on the second frequency resource, an identification of the first frequency resource, and an identification of the second frequency resource. The fourth phase difference is a phase difference between the second phase and the fourth phase.

The difference information of the first phase difference may include at least one of: the difference of the first phase difference, the identification of the first antenna, the identification of the second antenna, the identification of the first frequency resource and the identification of the second frequency resource; the difference of the first phase difference, the first port identification, the second port identification, the third port identification, the fourth port identification, the identification of the first frequency resource and the identification of the second frequency resource; the difference of the first phase difference, the identification of the reference signals sent by the first port and the second port on the first frequency resource, the identification of the reference signals sent by the third port and the fourth port on the second frequency resource, the identification of the first frequency resource and the identification of the second frequency resource. The difference value of the first phase difference is the difference value of the first phase difference and the second phase difference.

The difference information of the second phase difference may include at least one of: the difference of the first phase difference, the identification of the first antenna, the identification of the second antenna, the identification of the first frequency resource and the identification of the second frequency resource; the difference of the first phase difference, the first port identification, the second port identification, the third port identification, the fourth port identification, the identification of the first frequency resource and the identification of the second frequency resource; the difference of the first phase difference, the identification of the reference signals sent by the first port and the second port on the first frequency resource, the identification of the reference signals sent by the third port and the fourth port on the second frequency resource, the identification of the first frequency resource and the identification of the second frequency resource. The difference value of the second phase difference is the difference value of the third phase difference and the fourth phase difference.

It should be understood that, in addition to the antenna identifier or the frequency resource identifier, the phase difference information and the difference information of the phase difference indicate the order of phase difference or the order of phase difference. Reference may be made to S505 specifically, and details thereof are not described herein.

It should also be appreciated that the terminal device 720 may also transmit reference signals on more antennas and on more resource frequencies, as the application is not limited in this regard.

S705, the terminal device 710 transmits the location information to the terminal device 720. Correspondingly, the terminal device 720 receives the location information transmitted by the terminal device 710.

S706, the terminal device 720 calculates the departure angle.

In this step, the terminal device 720 may calculate the departure angle according to the location information measured by the terminal device 710 and its own positioning assistance information.

In one example, if the location information includes first phase information, second phase information, third phase information, and fourth phase information, and the positioning assistance information includes a relative position of the first antenna and the second antenna, the terminal device 520 may determine the departure angle according to equation 3, equation 7, equation 8, and equation 10.

In another example, if the location information includes first phase difference information and second phase difference information, or third phase difference information and fourth phase difference information, and the positioning assistance information includes the relative positions of the first antenna and the second antenna, the terminal device 520 may determine the departure angle according to equation 7, equation 8, and equation 10.

In yet another example, if the location information includes difference information of the first phase difference or difference information of the second phase difference, the positioning assistance information includes a relative position of the first antenna and the second antenna, the terminal device 520 may determine the departure angle according to equation 10.

In the embodiment of the application, the first equipment can send the reference signals borne on different frequency resources through different antennas, the terminal equipment measures the phases of the reference signals sent on a plurality of different frequency resources, determines the position information and sends the position information to the first equipment, so that the first equipment can determine a unique departure angle according to the position information and the positioning auxiliary information of the first equipment, and further the problem of angle measurement ambiguity can be solved.

Fig. 8 is a schematic flow chart of another communication method provided by an embodiment of the present application. The method 800 shown in fig. 8 may include S801 to S808, mainly related to in a sidelink positioning scenario, where the terminal device 820 (an example of the first device shown in fig. 4) sends reference signals on a plurality of different frequency resources through multiple antennas, and after the terminal device 810 (an example of the terminal device shown in fig. 4) receives the reference signals on the different frequency resources through the same antenna, the reference signals on the different frequency resources may be measured to obtain phase information, and the solution of the departure angle is completed according to the phase information and the positioning auxiliary information sent by the terminal device 820. The various steps in the method 800 are described in detail below.

S801, the terminal device 810 transmits a request message to the terminal device 820. Correspondingly, the terminal device 820 receives the request message sent by the terminal device 810.

S802, the terminal device 820 transmits configuration information and capability information to the terminal device 810. Correspondingly, the terminal device 810 receives configuration information and capability information sent by the terminal device 820.

S803, the terminal device 810 sends a response message to the terminal device 820. Correspondingly, the terminal device 820 receives the response message sent by the terminal device 810.

S804, the terminal device 820 transmits the reference signal on a plurality of different frequency resources of the plurality of antennas. Correspondingly, the terminal device 810 receives reference signals on a plurality of different frequency resources.

S805, the terminal device 810 measures the phase of the reference signal transmitted by the terminal device 820, and determines the location information.

S801 to S805 may refer to S701 to S705, and are not described here again for brevity.

S806, the terminal device 820 transmits positioning assistance information to the terminal device 810. Correspondingly, the terminal device 810 receives positioning assistance information transmitted by the terminal device 820.

The positioning assistance information includes relative position information between antennas of the terminal device 820. The content related to the positioning assistance information may refer to S506, and for brevity, will not be described herein.

S807, the terminal device 810 calculates the departure angle.

In this step, the terminal device 810 may calculate the departure angle based on the measured location information and the positioning assistance information transmitted from the terminal device 820. The specific content of calculating the departure angle may refer to S706, and will not be described herein.

S808, the terminal device 810 transmits the calculated departure angle to the terminal device 820. Correspondingly, terminal device 820 receives the departure angle transmitted by terminal device 810.

In the embodiment of the application, the first device can send the reference signals carried on different frequency resources through different antennas, the terminal device can measure the phases of the reference signals on a plurality of different frequency resources, determine the position information, determine the unique departure angle according to the position information and the positioning auxiliary information sent by the first device, and send the departure angle to the first device. Since the departure angle is unique, the problem of angular ambiguity can be solved.

Fig. 9 is a schematic flow chart of another communication method provided by an embodiment of the present application. The method 900 shown in fig. 9 may include steps S901 to S912, mainly involving that in an NR positioning scenario, the gNB/TRP (an example of the first device described in fig. 4) transmits reference signals on a plurality of different frequency resources through a plurality of antennas, the UE (an example of the terminal device described in fig. 4) determines location information by receiving and measuring phases of the reference signals on the plurality of different frequency resources, and transmits the location information to the LMF, which forwards the location information to the gNB/TRP. And after the gNB/TRP completes the calculation of the departure angle according to the position information, the departure angle is sent to the LMF. In the application, a plurality of gNB/TRPs can be provided, and the position of the UE can be uniquely determined through the plurality of gNB/TRPs. The various steps in the method 900 are described in detail below.

And S901, carrying out configuration information interaction between the LMF and the gNB/TRP through NR positioning protocol A (NR positioning protocol A, NRPPa).

Specifically, the gNB/TRP combines the antenna spacing and the frequency resources used, determines whether there is a risk of angular ambiguity, determines whether reference signals need to be transmitted on a plurality of frequency resources, and determines the transmission mode of the reference signals.

The specific content for determining whether there is a risk of angular ambiguity may refer to step S502. The transmission mode of the reference signal comprises any one of the following modes: the transmission mode of the frequency hopping and switching antenna, the transmission mode of the carrier aggregation and switching antenna, the transmission mode of the frequency hopping and multi-antenna simultaneously, and the transmission mode of the carrier aggregation and multi-antenna simultaneously.

It should be noted that there may be a plurality of gnbs/TRPs, and the plurality of gnbs/TRPs may interact with the LMF through NRPPa configuration information respectively.

And S902, carrying out capability information interaction between the LMF and the UE through an LTE positioning protocol (LTE positioning protocol, LPP).

Specifically, the UE may determine, according to its own capability, whether to support phase measurement at a plurality of different frequencies, and send a reference signal transmission manner supported by the UE to the LMF, so as to complete capability information interaction.

S903, the LMF transmits positioning assistance request information to the gNB/TRP through NRPPa. Correspondingly, the gNB/TRP receives the location assistance request information sent by the LMF.

In this step, the positioning assistance request information mainly includes configuration information of reference signals supported in existing standards, geographical position information, and the like.

The number of the gnbs/TRPs may be plural, and the LMF may transmit the positioning assistance request information to each gNB/TRP through NRPPa.

S904, the gNB/TRP transmits positioning assistance response information to the LMF through NRPPa. Correspondingly, the LMF receives positioning auxiliary response information sent by the gNB/TRP.

Specifically, the gNB/TRP transmits positioning assistance response information to the LMF through NRPPa according to the received positioning assistance request information, and is used for responding to the positioning assistance request information.

It should be noted that there may be a plurality of gnbs/TRPs, and each gNB/TRP may send positioning assistance response information to the LMF through NRPPa.

S905, the LMF provides the assistance information to the UE through the LPP. Correspondingly, the UE receives the auxiliary information sent by the LMF.

The auxiliary information mainly includes configuration information of the reference signal, where the configuration information may include bandwidth, comb form, etc. of the reference signal, and specific content may refer to an existing protocol, which is not described herein.

S906, the LMF transmits the request location information to the UE through the LPP. Correspondingly, the UE receives the request positioning information sent by the LMF.

The LMF may transmit, through the LPP, request positioning information to the UE, the request positioning information being mainly used to request the UE to measure phase information of reference signals that the gNB/TRP transmits on a plurality of different frequency resources through a plurality of antennas.

Alternatively, the requested positioning information may instruct the UE to make measurements using the same antenna.

Optionally, the request positioning information may further indicate that one or more of phase information, phase difference information, and difference information of the phase difference is reported.

S907, the gNB/TRP transmits reference signals over multiple different frequency resources over multiple antennas.

It should be noted that, when only one gNB/TRP exists, the gNB/TRP can send a plurality of reference signals of different frequency resources to the UE on different antennas to determine the angular relationship between the UE and the gNB/TRP; when there are multiple gnbs/TRPs, the multiple gnbs/TRPs may transmit reference signals on multiple different frequency resources through their own multiple antennas, respectively, to determine the location of the UE.

The reference signal may be one or more, that is, the one gNB/TRP or the multiple gNB/TRP may respectively transmit one reference signal, the reference signal is jointly carried by multiple frequency resources, the one gNB/TRP or the multiple gNB/TRP may also transmit multiple reference signals, and the multiple reference signals may respectively be carried on multiple different frequency resources, which is not limited in this application.

The specific content of this step may refer to S401, and will not be described herein.

S908, the UE measures the phase of the reference signal sent by the gNB/TRP, and determines the location information.

S909, the UE transmits location information to the LMF through the LPP. Correspondingly, the LMF receives the location information sent by the UE.

S908 and S909 may refer to S705 and S706, respectively, and are not described herein for brevity.

S910, the LMF transmits location information to the gNB/TRP participating in the positioning through NRPPa. The gNB/TRP participating in the positioning receives the location information sent by the LMF.

Alternatively, the LMF may transmit location information to the corresponding gNB/TRP through NRPPa, for example, transmit gNB/TRP 1 through phase information measured by reference signals of the gNB/TRP 1; phase information obtained by reference signal measurement of gNB/TRP 2 transmits gNB/TRP 2, and so on.

Alternatively, the LMF may transmit the location information to each gNB/TRP through NRPPa, that is, transmit all phase information to each gNB/TRP. For example, the phase information measured by the reference signal of the gNB/TRP 1 and the phase information measured by the reference signal of the gNB/TRP 2 may all be transmitted to the gNB/TRP 1, and may also all be transmitted to the gNB/TRP 2, where the gNB/TRP 1 is capable of determining the phase information belonging to the reference signal transmitted by itself from the plurality of phase information.

S911, gNB/TRP calculates the departure angle.

In this step, the gNB/TRP may calculate the departure angle based on the location information transmitted by the UE and the positioning assistance information of the gNB/TRP transmitted by the LMF. The specific content of calculating the departure angle may refer to S706, and will not be described herein.

S912, gNB/TRP sends the calculated departure angle to LMF via NRPPa. Correspondingly, the LMF receives the departure angle sent by the gNB/TRP.

In the embodiment of the application, the base station can send the reference signals carried on different frequency resources on different antennas, the terminal equipment can measure the phases of the reference signals on different frequency resources, determine the position information, send the position information to the LMF, the LMF forwards the position information to the base station, and the base station determines a unique departure angle according to the position information and the positioning auxiliary information of the base station. Since the departure angle is unique, the problem of angular ambiguity can be solved. Further, since there may be a plurality of base stations, there are a plurality of determined departure angles, and the plurality of departure angles are all unique, the base station may uniquely determine the location of the terminal device according to the plurality of unique departure angles, so that the problem of positioning ambiguity may be solved.

Fig. 10 is a schematic flow chart of another communication method provided by an embodiment of the present application. The method 1000 shown in fig. 10 may include S1001 to S1012, mainly involving that in an NR positioning scenario, a serving gNB/TRP (an example of the first device shown in fig. 4) and a neighboring gNB/TRP transmit reference signals on a plurality of different frequency resources through multiple antennas, respectively, a UE (an example of the terminal device shown in fig. 4) determines location information by receiving and measuring phases of the reference signals on the plurality of different frequency resources, and transmits the location information to the serving gNB/TRP. And after the service gNB/TRP completes the calculation of the departure angle according to the position information, the departure angle is sent to the LMF. In the application, a plurality of adjacent gNB/TRPs can be provided, and the position of the UE can be determined through serving the gNB/TRP and the plurality of adjacent gNB/TRPs, so that the effect of no fuzzy positioning is achieved. The various steps in the method 1000 are described in detail below.

S1001, performing configuration information interaction between the LMF and the serving gNB/TRP, and between the LMF and the adjacent gNB/TRP through NRPPa.

Wherein a serving gNB/TRP may be understood as a base station or node capable of communicating with a UE, and a neighboring gNB/TRP may be understood as a base station or node neighboring the UE, that is, the UE may be able to receive reference signals transmitted by the neighboring gNB/TRP.

The specific content of this step may refer to S901, which is not described herein.

And S1002, capability information interaction is carried out between the LMF and the UE through the LPP.

The specific content of this step may refer to S902, and will not be described herein.

S1003, the LMF transmits positioning assistance request information to the neighboring gNB/TRP through NRPPa. Correspondingly, the neighboring gNB/TRP receives the location assistance request information sent by the LMF.

In this step, the LMF transmits positioning assistance request information including mainly configuration information of reference signals supported in the existing standard, geographical location information, etc., to the service gNB/TRP through NRPPa, and may not include positioning assistance information. The LMF transmits positioning assistance request information to the neighboring gNB/TRP through NRPPa, which may include relative position information of antennas within the neighboring gNB/TRP, i.e., positioning assistance information, in addition to configuration information of reference signals, geographical position information, etc. supported in the existing standard.

S1004, the neighboring gNB/TRP transmits positioning assistance response information to the LMF through NRPPa. Correspondingly, the LMF receives positioning assistance response information sent by the adjacent gNB/TRP.

In S1005, the LMF provides the assistance information to the UE through the LPP. Correspondingly, the UE receives the auxiliary information sent by the LMF.

S1006, the LMF sends the request positioning information to the UE through the LPP. Correspondingly, the UE receives the request positioning information sent by the LMF.

S1007, the serving gNB/TRP and the neighboring gNB/TRP transmit reference signals on a plurality of different frequency resources through a plurality of antennas, respectively. Correspondingly, the UE receives the reference signals transmitted by the serving gNB/TRP and the neighboring gNB/TRP on a plurality of different frequency resources.

S1008, the UE measures phases of reference signals transmitted by the serving gNB/TRP and the adjacent gNB/TRP, and determines position information.

S1004 to S1008 may refer to S904 to S908, respectively, and are not described here again.

S1009, the UE transmits location information to the serving gNB/TRP through radio resource control (radio resource control, RRC). Correspondingly, the serving gNB/TRP receives the position information sent by the UE through RRC.

In this step, the UE may directly transmit location information, which may include phase information and/or phase difference information and/or difference information of phase difference, to the serving gNB/TRP through RRC, which the present application is not limited to.

S1010, the LMF transmits the antenna configuration information of the adjacent gNB/TRP to the service gNB/TRP through NRPPa. Correspondingly, the serving gNB/TRP receives the antenna configuration information of the adjacent gNB/TRP transmitted by the LMF.

In this step, the LMF transmits antenna configuration information of each neighboring gNB/TRP to the serving gNB/TRP through NRPPa, and may mainly include relative position information between antennas of each neighboring gNB/TRP.

S1010, the service gNB/TRP calculates the departure angle.

In this step, the serving gNB/TRP may calculate the departure angle based on the location information transmitted by the UE and the location assistance information of each gNB/TRP transmitted by the LMF. The specific content of calculating the departure angle may refer to S706, and will not be described herein.

S1012, the serving gNB/TRP sends the calculated departure angles of all gNB/TRP to the LMF via NRPPa. Correspondingly, the LMF receives the departure angle sent by the service gNB/TRP.

In the embodiment of the application, the service base station and the adjacent base station can both transmit the reference signals borne on different frequency resources on different antennas, the terminal equipment can measure the phases of the reference signals on different frequency resources, determine the position information and transmit the position information to the service base station, and the service base station determines a unique departure angle according to the position information and the positioning auxiliary information of the service base station. Since the departure angle is unique, the problem of angular ambiguity can be solved. Further, the serving base station may also receive positioning assistance information of each neighboring base station, and the serving base station may uniquely determine the departure angle according to the location information and the positioning assistance information of each neighboring base station. The number of the adjacent base stations is multiple, so that the determined departure angles are multiple, and the departure angles are unique, so that the position of the terminal equipment can be uniquely determined by using the method provided by the application, and the problem of fuzzy positioning can be further solved.

Fig. 11 is a schematic flow chart of another communication method provided by an embodiment of the present application. As shown in fig. 11, the method 1100 is mainly applied to NR positioning scenarios involving interactions between a terminal device, a first device and a core network device. The method 1100 shown in fig. 11 includes S1101 to S1104, and each step in the method 1100 is described in detail below.

S1101, the first device sends positioning assistance information to the core network device. Correspondingly, the core network device receives the positioning auxiliary information sent by the first device.

The positioning assistance information is used to indicate the relative position of the first device antenna. For example, the positioning assistance information may indicate a relative position of the first antenna and the second antenna of the first device.

S1102, the first device transmits a reference signal on a plurality of different frequency resources. Correspondingly, the terminal device receives reference signals on a plurality of different frequency resources.

The specific details of this step may refer to S401, and are not described herein for avoiding repetition.

S1103, the terminal device transmits the location information. Correspondingly, the core network device receives the location information from the terminal device.

Wherein the location information may be determined based on phase measurements of reference signals on a plurality of different frequency resources.

For example, the location information is determined based on a phase measurement of a reference signal carried on a first frequency resource and a phase measurement of a reference signal carried on a second frequency resource.

Optionally, the location information is used to indicate at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference. Wherein the first phase difference information is obtained from the first phase and the second phase, the second phase difference information is obtained from the third phase and the fourth phase, the third phase difference information is obtained from the first phase and the third phase, the fourth phase difference information is obtained from the second phase and the fourth phase, and the difference information of the phase difference is obtained from the first phase, the second phase, the third phase, and the fourth phase.

And S1104, the core network equipment determines a departure angle according to the positioning auxiliary information and the position information.

The core network device may determine the relative position of the first device antenna according to the positioning assistance information, and may determine the phase information of the reference signal on different frequency resources according to the position information, so that the departure angle may be determined according to formula 10.

In the embodiment of the application, the terminal equipment receives the reference signals borne on a plurality of different frequency resources and sends the position information for determining the departure angle to the core network equipment, and the first equipment sends the positioning auxiliary information to the core network equipment so that the core network equipment can determine the departure angle according to the position information and the positioning auxiliary information. Since the position information is determined based on the phase measurement results of the reference signals on the plurality of different frequency resources and the position information is used for determining the departure angle, it can be understood that the departure angle is also determined based on the reference signals carried on the different frequency resources, so that a unique departure angle can be determined in an NR positioning scene, and the problem of angle measurement ambiguity can be solved.

Fig. 12 is a schematic flow chart of another communication method provided by an embodiment of the present application. The method 1200 shown in fig. 12 may include S1201 to S1210, mainly involving that in the NR positioning scenario, the gNB/TRP (an example of the first device described in fig. 11) transmits reference signals on a plurality of different frequency resources through multiple antennas, the UE (an example of the terminal device described in fig. 11) determines location information by receiving and measuring phases of reference signals carried on a plurality of different frequency resources transmitted by the gNB/TRP through different antennas, and transmits the location information to the LMF, and the LMF (an example of the core network device described in fig. 11) completes the resolution of the departure angle. In the application, the number of gNB/TRP can be multiple, and the position of the UE can be determined through the multiple gNB/TRP, so that the effect of no fuzzy positioning is achieved. The various steps in the method 1200 are described in detail below.

And S1201, carrying out configuration information interaction between the LMF and the gNB/TRP through NRPPa.

And S1202, capability information interaction is carried out between the LMF and the UE through the LPP.

Specific contents of S1201 and S1202 may refer to S901 and S902, respectively, and are not described herein for avoiding repetition.

S1203, the LMF transmits positioning assistance request information to the gNB/TRP through NRPPa. Correspondingly, the gNB/TRP receives the location assistance request information sent by the LMF.

In this step, the positioning assistance request information may include relative position information of the antennas within the gNB/TRP, i.e., positioning assistance information, in addition to configuration information of reference signals supported in the existing standard, geographical position information, and the like.

S1204, the gNB/TRP transmits positioning assistance response information to the LMF through NRPPa. Correspondingly, the LMF receives positioning auxiliary response information sent by the gNB/TRP.

Specifically, the gNB/TRP transmits positioning assistance response information to the LMF through NRPPa, and provides positioning information to the LMF, wherein the positioning information comprises relative position information of antennas in the gNB/TRP.

S1205, the LMF provides the assistance information to the UE through the LPP. Correspondingly, the UE receives the auxiliary information sent by the LMF.

S1206, the LMF transmits the request location information to the UE through the LPP. Correspondingly, the UE receives the request positioning information sent by the LMF.

S1207, the gNB/TRP transmits reference signals on a plurality of different frequency resources through a plurality of antennas, respectively. Correspondingly, the UE receives the reference signal sent by the gNB/TRP on a plurality of different frequency resources.

S1208, the UE measures the phase of the reference signal transmitted by the gNB/TRP, and determines the location information.

S1209, the UE transmits the location information to the LMF through the LPP. Correspondingly, the LMF receives the location information sent by the UE.

The specific contents of S1205 to S1209 may refer to S905 to S909, respectively, and are not described here again for brevity.

S1210, LMF calculates the angle of departure.

In this step, the LMF may calculate the departure angle according to the location information transmitted by the UE and the positioning assistance information transmitted by the gNB/TRP. The specific content of calculating the departure angle may refer to S706, and will not be described herein.

In the embodiment of the application, the base station can transmit the reference signals carried on different frequency resources on different antennas, the terminal equipment can measure the phases of the reference signals on different frequency resources, determine the position information and transmit the position information to the LMF, and the LMF determines a unique departure angle according to the position information and the positioning auxiliary information transmitted by the base station. Since the departure angle is unique, the problem of angular ambiguity can be solved. Further, since there may be a plurality of base stations, there are a plurality of determined departure angles, and the plurality of departure angles are unique, the LMF may uniquely determine the location of the terminal device according to the plurality of unique departure angles, so that the problem of positioning ambiguity may also be solved.

Method embodiments of the present application are described in detail above in connection with fig. 1 to 12, and apparatus embodiments of the present application are described below in connection with fig. 13 and 14. It is to be understood that the description of the method embodiments corresponds to the description of the device embodiments, and that parts not described in detail can therefore be seen in the preceding method embodiments.

Fig. 13 is a schematic block diagram of a communication apparatus provided by the present application, including a receiving unit 1310 and a transmitting unit 1330. Alternatively, the communication device may be used to implement steps or procedures performed by a terminal device in the above method embodiments, for example, the communication device may be the terminal device, or may also be a chip or a circuit in the terminal device. The receiving unit 1310 is configured to perform the receiving-related operation of the terminal device in the above method embodiment. The sending unit is configured to perform the sending related operation of the terminal device in the foregoing method embodiment. Optionally, the communication apparatus further comprises a processing unit 1320, where the processing unit 1320 is configured to perform the processing related operations of the terminal device in the above method embodiment. Alternatively, the transmitting unit 1330 and the receiving unit 1310 may be integrated into one transceiver unit, and have both functions of receiving and transmitting, which is not limited herein.

Alternatively, the communication apparatus may be configured to implement steps or procedures performed by the first device in the above method embodiments, for example, the communication apparatus may be the first device, or may also be a chip or a circuit in the first device. And a receiving unit 1310, where the receiving unit 1310 is configured to perform the receiving-related operation of the first device in the above method embodiment. The processing unit 1320 is configured to perform a processing related operation of the first device in the above method embodiment, and the transmitting unit is configured to perform a transmitting related operation of the first device in the above method embodiment. Alternatively, the transmitting unit 1330 and the receiving unit 1310 may be integrated into one transceiver unit, and have both functions of receiving and transmitting, which is not limited herein.

Alternatively, the communication apparatus may be configured to implement steps or procedures performed by the core network device in the above method embodiments, for example, the communication apparatus may be the core network device, or may also be a chip or a circuit in the core network device. The receiving unit 1310 is configured to perform the operations related to the reception of the core network device in the above method embodiment. The processing unit 1320 is configured to perform processing related operations of the core network device in the above method embodiment, and the transmitting unit 1330 is configured to perform transmitting related operations of the core network device in the above method embodiment. Alternatively, the transmitting unit 1330 and the receiving unit 1310 may be integrated into one transceiver unit, and have both functions of receiving and transmitting, which is not limited herein.

Fig. 14 is a schematic block diagram of a communication apparatus according to the present application, including a processor 1410, where the processor 1410 is coupled to a memory 1420, the memory 1420 is configured to store a computer program or an instruction and/or data, and the processor 1410 is configured to execute the computer program or the instruction stored in the memory 1420, or to read the data stored in the memory 1420, so as to execute the method in the above method embodiments.

Optionally, the processor 1410 is one or more.

Optionally, memory 1420 is one or more.

Alternatively, the memory 1420 may be integrated with the processor 1410 or may be separate.

Optionally, as shown in fig. 14, the communication device further comprises a transceiver 1430, the transceiver 1430 being used for receiving and/or transmitting signals. For example, the processor 1410 may be configured to control the transceiver 1430 to receive and/or transmit signals.

Alternatively, the communication apparatus may be used to implement the operations performed by the terminal device in the above respective method embodiments. For example, the processor 1410 is configured to execute computer programs or instructions stored in the memory 1420 to implement the relevant operations performed by the terminal device in the various method embodiments above. For example, the transceiver 1430 may be used to perform a receiving operation of the terminal device in S401 shown in fig. 4, and may also be used to transmit operation of the terminal device in S402. The processor 1410 is configured to perform the processing steps of the terminal device in the embodiment of the present application. For example, for performing a processing operation of determining position information from the measured phase of the reference signal. It should be understood that the communication apparatus shown in fig. 14 may perform the operations performed by the terminal device in fig. 4 and 11, the terminal device 510 in fig. 5, the terminal device 610 in fig. 6, the terminal device 710 in fig. 7, the terminal device 810 in fig. 8, the UE in fig. 9 and 10, and the UE in fig. 12.

Alternatively, the communication apparatus may be used to implement the operations performed by the first device in the above method embodiments. For example, the processor 1410 is configured to execute a computer program or instructions stored by the memory 1420 to implement the relevant operations performed by the first device in the various method embodiments above. For example, the transceiver 1430 may be used to perform a transmitting operation of the first device in S401 shown in fig. 4, and may also be used to receive operation of the first device in S402. The processor 1410 is configured to perform the processing steps of the first device in the embodiment of the present application. For example, for performing a processing operation for calculating the departure angle from the position information. It should be understood that the communication apparatus shown in fig. 14 may perform the operations performed by the first device in fig. 4 and 11, the terminal device 520 in fig. 5, the terminal device 620 in fig. 6, the terminal device 720 in fig. 7, the terminal device 820 in fig. 8, the gNB/TRP in fig. 9, the service gNB/TRP in fig. 10, and the gNB/TRP in fig. 12.

Alternatively, the communication apparatus may be configured to implement the operations performed by the core network device in the above respective method embodiments. For example, the processor 1410 is configured to execute computer programs or instructions stored in the memory 1420 to implement the relevant operations performed by the core network device in the various method embodiments above. For example, the transceiver 1430 may be used to perform a transmitting operation of the LMF in S903 shown in fig. 9, and may also be used to perform a receiving operation of the LMF in S904. The processor 1410 is configured to perform the processing steps of the LMF in an embodiment of the present application. For example, an operation for calculating the departure angle in S1104 shown in fig. 11 is performed.

It should also be understood that fig. 14 is merely an example and not limiting, and that the communication device including the processor, memory and transceiver described above may not rely on the structure shown in fig. 14.

Furthermore, the application provides a chip comprising a processor. The memory for storing the computer program is provided separately from the chip and the processor is configured to execute the computer program stored in the memory such that the operations and/or processes performed by the terminal device or the first device or the core network device in any one of the method embodiments are performed.

Further, the chip may also include a communication interface. The communication interface may be an input/output interface, an interface circuit, or the like. Further, the chip may further include a memory.

The chip in the embodiments of the present application may be a programmable gate array (field programmable gate array, FPGA), an application specific integrated chip (application specific integrated circuit, ASIC), a system on chip (SoC), a CPU, a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), a microcontroller (micro controller unit, MCU), a programmable controller (programmable logic device, PLD), other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, or other integrated chips.

The present application also provides a computer program product comprising: computer program code which, when run on a computer, causes the computer to perform the method of any of the embodiments shown in fig. 4 to 12.

The present application also provides a computer readable medium having stored thereon a program code which, when run on a computer, causes the computer to perform the method of any of the embodiments shown in fig. 4 to 12.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method. To avoid repetition, a detailed description is not provided herein.

It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capability. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A communication method, wherein the method is applied to a terminal device, and comprises:

receiving a reference signal carried on a first frequency resource and a second frequency resource, the first frequency resource and the second frequency resource being different;

and transmitting first information, wherein the first information is used for indicating a direction angle, and the first information is determined based on the phase measurement result of the reference signal carried on the first frequency resource and the phase measurement result of the reference signal carried on the second frequency resource.

2. The method of claim 1, wherein the terminal device comprises a first antenna and a second antenna;

the receiving the reference signal carried on the first frequency resource and the second frequency resource comprises:

Receiving, by the first antenna, the reference signals carried on a first frequency resource and a second frequency resource;

receiving, by the second antenna, the reference signals carried on the first frequency resource and the second frequency resource;

the phase measurement result of the reference signal on the first frequency resource is determined according to a first phase and a second phase, wherein the first phase is the phase of the reference signal of the first frequency resource received by the first antenna, and the second phase is the phase of the reference signal of the first frequency resource received by the second antenna;

the phase measurement of the reference signal on the second frequency resource is determined according to a third phase and a fourth phase, the third phase being the phase of the reference signal of the second frequency resource received by the first antenna, and the fourth phase being the phase of the reference signal of the second frequency resource received by the second antenna.

3. The method of claim 1, wherein the step of determining the position of the substrate comprises,

receiving a reference signal on the first frequency resource sent by a first port and a reference signal on the first frequency resource sent by a second port;

Receiving a reference signal on the second frequency resource sent by a third port and a reference signal on the second frequency resource sent by a fourth port;

the phase measurement result of the reference signal on the first frequency resource is determined according to a first phase and a second phase, wherein the first phase is the phase of the received reference signal on the first frequency resource transmitted by the first port, and the second phase is the phase of the received reference signal on the first frequency resource transmitted by the second port;

the phase measurement result of the reference signal on the second frequency resource is determined according to a third phase and a fourth phase, wherein the third phase is the phase of the received reference signal on the second frequency resource transmitted by the third port, and the fourth phase is the phase of the received reference signal on the second frequency resource transmitted by the fourth port.

4. A method according to claim 2 or 3, characterized in that,

the first information includes location information indicating at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference;

Wherein the first phase difference information is obtained from the first phase and the second phase,

the second phase difference information is derived from the third phase and the fourth phase,

the third phase difference information is derived from the first phase and the third phase,

the fourth phase difference information is derived from the second phase and the fourth phase,

the difference information of the phase difference is obtained from the first phase, the second phase, the third phase, and the fourth phase.

5. A method according to claim 2 or 3, characterized in that,

the first information includes a direction angle, which is an arrival angle or an departure angle,

the direction angle is determined from position information indicating at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference;

6. The method according to claim 4 or 5, wherein,

the first phase information includes the first phase; the second phase information includes the second phase; the third phase information includes the third phase; the fourth phase information includes the fourth phase;

the first phase difference information includes a first phase difference; the second phase difference information includes a second phase difference; the third phase difference information includes a third phase difference; the fourth phase difference information includes a fourth phase difference;

the difference information of the phase differences comprises a difference value of a first phase difference or a difference value of a second phase difference;

the first phase difference is a phase difference between the first phase and the second phase;

The second phase difference is a phase difference between the third phase and the fourth phase;

the third phase difference is a phase difference between the first phase and the third phase;

the fourth phase difference is a phase difference between the second phase and the fourth phase;

the difference value of the first phase difference is the difference value of the first phase difference and the second phase difference;

the difference value of the second phase difference is the difference value of the third phase difference and the fourth phase difference.

7. The method according to any one of claims 1 to 6, wherein the receiving the reference signal carried on the first frequency resource and on the second frequency resource comprises:

receiving a first reference signal, the first reference signal being carried on the first frequency resource;

a second reference signal is received, the second reference signal being carried on the second frequency resource.

8. The method according to any one of claims 1 to 6, wherein the receiving the reference signal carried on the first frequency resource and on the second frequency resource comprises:

a first reference signal is received, the first reference signal being carried jointly by the first frequency resource and the second frequency resource.

9. A method of communication, the method being applied to a first device, comprising:

transmitting reference signals carried on a first frequency resource and a second frequency resource, the first frequency resource and the second frequency resource being different;

first information is received from a terminal device, the first information being used to indicate a direction angle, the first information being determined based on a phase measurement of the reference signal carried on the first frequency resource and a phase measurement of the reference signal carried on the second frequency resource.

10. The method of claim 9, wherein the step of determining the position of the substrate comprises,

the reference signal carried on the first frequency resource is received by a first antenna and a second antenna;

the reference signal carried on the second frequency resource is received by the first antenna and the second antenna;

the phase measurement result of the reference signal on the first frequency resource is determined according to a first phase and a second phase, wherein the first phase corresponds to the phase of the reference signal on the first frequency resource received by the first antenna, and the second phase corresponds to the phase of the reference signal on the first frequency resource received by the second antenna;

The phase measurement result of the reference signal on the second frequency resource is determined according to a third phase and a fourth phase, wherein the third phase corresponds to the phase of the reference signal on the second frequency resource received by the first antenna, and the fourth phase corresponds to the phase of the reference signal on the second frequency resource received by the second antenna.

11. The method of claim 9, wherein the step of determining the position of the substrate comprises,

the transmitting the reference signal carried on the first frequency resource and the second frequency resource comprises:

transmitting reference signals on the first frequency resource through the first port and the second port respectively;

transmitting reference signals on the second frequency resource through the third port and the fourth port respectively;

the phase measurement result of the reference signal on the first frequency resource is determined according to a first phase and a second phase, wherein the first phase corresponds to the phase of the reference signal on the first frequency resource sent by the first port, and the second phase corresponds to the phase of the reference signal on the first frequency resource sent by the second port;

the phase measurement result of the reference signal on the second frequency resource is determined according to a third phase and a fourth phase, wherein the third phase is the phase of the reference signal on the second frequency resource transmitted by the third port, and the fourth phase is the phase of the reference signal on the second frequency resource transmitted by the fourth port.

12. The method of claim 11, wherein the first device comprises a first antenna and a second antenna, wherein the reference signal on the first frequency resource transmitted by the first port and the reference signal on the second frequency resource transmitted by the third port are both transmitted through the first antenna, and wherein the reference signal on the first frequency resource transmitted by the second port and the reference signal on the second frequency resource transmitted by the fourth port are both transmitted through the second antenna.

13. The method according to any one of claims 10 to 12, wherein,

the method further comprises the steps of:

determining the direction angle according to the position information;

14. The method according to any one of claims 10 to 12, wherein,

the first information includes a direction angle, which is an arrival angle or an departure angle, which is determined according to position information indicating at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference;

15. The method according to claim 13 or 14, wherein,

16. The method according to any of claims 9 to 15, wherein the transmitting the reference signal carried on the first frequency resource and on the second frequency resource comprises:

transmitting a first reference signal carried on a first frequency resource;

a second reference signal carried on a second frequency resource is transmitted.

17. The method according to any of claims 9 to 15, wherein the transmitting the reference signal carried on the first frequency resource and on the second frequency resource comprises:

a first reference signal carried on a first frequency resource and a second frequency resource is transmitted.

18. A communication method, wherein the method is applied to a core network device, and comprises:

receiving location information from a terminal device, the location information being determined based on phase measurements of reference signals carried on a first frequency resource and phase measurements of reference signals carried on a second frequency resource;

And determining the departure angle according to the position information.

19. The method of claim 18, wherein the step of providing the first information comprises,

the location information is used to indicate at least one of: first phase information, second phase information, third phase information, and fourth phase information; first phase difference information and second phase difference information; third phase difference information and fourth phase difference information; difference information of the phase difference;

20. The method of claim 19, wherein the step of determining the position of the probe comprises,

21. A communication method, wherein the method is applied to a core network device, and comprises:

receiving location information from a terminal device, the location information being determined based on a phase measurement of a reference signal carried on a first frequency resource and a phase measurement of a reference signal carried on a second frequency resource, the location information being used to determine an angle of departure;

And sending the position information to access network equipment.

22. The method of claim 21, wherein the step of determining the position of the probe is performed,

23. The method of claim 22, wherein the step of determining the position of the probe is performed,

24. A communication device comprising means for performing the method of any one of claims 1 to 8; or, a module for performing the method of any one of claims 9 to 17; or comprises means for performing the method of any one of claims 18 to 23.

25. A communication device, comprising: a processor coupled with a memory for storing a program or instructions that, when executed by the processor, cause the communication device to perform the method of any one of claims 1 to 8; or cause the communication device to perform the method of any one of claims 9 to 17; or cause the communication device to perform the method of any one of claims 18 to 23.

26. A chip, comprising: a processor for reading and executing a computer program stored in a memory to perform the method of any one of claims 1 to 8; or to perform the method of any one of claims 9 to 17; or to perform the method of any one of claims 18 to 23.

27. A computer readable storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 8; alternatively, the computer is caused to perform the method of any one of claims 9 to 17; alternatively, the computer is caused to perform the method of any one of claims 18 to 23.