Communication method and communication apparatus

Abstract

The present application provides a communication method and a communication apparatus. The method comprises: a terminal receives indication information sent by an access network device, wherein the indication information indicates a first adjustment amount, the first adjustment amount is used for adjusting transmission parameters of a pilot signal sent by the terminal, and the transmission parameters include one or more of the following: a pilot signal phase difference corresponding to different sub-carriers, a pilot signal phase difference corresponding to different antennas, and an amplitude gain of the pilot signal. The method is conducive to preventing location information of a user from being leaked.

Description

Communication method and communication apparatus

[0001] The present application claims priority to the Chinese patent application No. 202410659811.6, filed on May 24, 2024, with the State Intellectual Property Office of China, and the Chinese patent application No. 202410659811.6 has the title of “A communication method and a communication apparatus”, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, and in particular, to a communication method and a communication apparatus. BACKGROUND

[0003] The 5th generation wireless communication system (5G) new radio (NR) standard introduces an uplink (UL) channel sounding reference signal (SRS) to perform positioning measurement.

[0004] The SRS can be sent by a user equipment (UE) to a base station (BS). The base station measures the SRS to obtain information for positioning the UE, such as the uplink time difference of arrival (TDOA) of the SRS, the angle of arrival (AoA) of the SRS, the angle of departure (AoD) of the SRS, etc. For the SRS sent by the UE, any device in the network can receive and measure it, including illegal receiving devices. In this way, the illegal device can also obtain the user's location information, resulting in the user's location information being leaked. SUMMARY

[0005] The present application provides a communication method and a communication apparatus, which are beneficial to avoid the user's location information being leaked.

[0006] In a first aspect, an embodiment of the present application provides a communication method. The method can be applied to a terminal side, for example, can be implemented by a terminal or a communication module / process module in the terminal, or a circuit or chip responsible for communication function in the terminal. The method comprises: receiving, by the terminal, indication information sent by an access network device, the indication information indicating a first adjustment amount, the first adjustment amount being used to adjust a transmission parameter of a pilot signal sent by the terminal, the transmission parameter comprising one or more of the following: pilot signal phase difference corresponding to different subcarriers, pilot signal phase difference corresponding to different antennas, and amplitude gain of the pilot signal.

[0007] Since the terminal adjusts the transmission parameter of the pilot signal, the transmission parameter of the pilot signal measured by the illegal device is inaccurate, and the illegal device cannot determine accurate positioning information based on the measured transmission parameter of the pilot signal, and thus cannot obtain the accurate position of the user. Therefore, based on the method described in the first aspect, it is beneficial to avoid the leakage of the position information of the user.

[0008] In a possible embodiment, after receiving the indication information sent by the access network device, the terminal can further receive first signaling sent by the access network device, and the first signaling is used to enable adjustment of the transmission parameter.

[0009] Based on this possible embodiment, the transmission parameter of the pilot signal can be more flexibly enabled to be adjusted.

[0010] In a possible embodiment, before receiving the indication information sent by the access network device, the terminal can further send capability information to the access network device, and the capability information indicates that the terminal has the capability of adjusting the transmission parameter.

[0011] Based on this possible embodiment, the access network device can accurately determine whether to send the indication information to the terminal.

[0012] In a possible embodiment, the indication information indicates the first adjustment amount, and includes: the indication information indicates an adjustment amount quantization rule and a quantized value of the first adjustment amount, and the adjustment amount quantization rule includes one or more of the following: a range of the adjustment amount of the transmission parameter or a quantization precision of the adjustment amount of the transmission parameter.

[0013] Based on this possible embodiment, the first adjustment amount can be accurately indicated.

[0014] In a possible embodiment, the indication information further indicates a downlink reference signal, and the direction of the transmission beam of the terminal sending the pilot signal is the same as the direction of the reception beam of the terminal receiving the downlink reference signal.

[0015] Based on this possible embodiment, the terminal can accurately determine the direction of the transmission beam of the pilot signal.

[0016] In a second aspect, the embodiments of the present application provide a communication method. The method can be applied to the network side, for example, can be realized by an access network device of the network side, a module (such as a circuit, a chip or a chip system, etc.) in the access network device, or a logic node, a logic module or software capable of realizing all or part of the function of the access network device. In the method: the access network device sends indication information to a terminal, the indication information indicates a first adjustment amount, the first adjustment amount is used to adjust the transmission parameter of the pilot signal sent by the terminal, and the transmission parameter includes one or more of the following: a pilot signal phase difference corresponding to different subcarriers, a pilot signal phase difference corresponding to different antennas, and a pilot signal amplitude gain.

[0017] In a possible implementation, the access network device can further send, to the first device, indication information for the first device to measure the pilot signal transmitted by the terminal.

[0018] In a possible implementation, after sending the indication information to the terminal, the access network device can further send, to the terminal, first signaling for enabling adjustment of the transmission parameter.

[0019] In a possible implementation, after sending the indication information to the first device, the access network device can further send, to the first device, second signaling for enabling correction of the transmission parameter of the pilot signal.

[0020] In a possible implementation, before sending the indication information to the terminal, the access network device can further receive capability information transmitted by the terminal, the capability information indicating that the terminal has the capability of adjusting the transmission parameter.

[0021] In a possible implementation, the indication information indicates the first adjustment amount, and includes: the indication information indicates an adjustment amount quantization rule and a quantized value of the first adjustment amount, the adjustment amount quantization rule including one or more of: a range of the adjustment amount of the transmission parameter or a quantization precision of the adjustment amount of the transmission parameter.

[0022] In a possible implementation, the indication information further indicates a downlink reference signal; a direction of a transmission beam of the terminal for transmitting the pilot signal is the same as a direction of a reception beam of the terminal for receiving the downlink reference signal.

[0023] The beneficial effects of the second aspect can refer to the beneficial effects of the first aspect, and will not be repeated here.

[0024] In a third aspect, an embodiment of the present application provides a communication method. The method can be applied to the terminal side, for example, can be implemented by the terminal or a communication module / processing module in the terminal, or a circuit or chip responsible for the communication function in the terminal. The method includes: the terminal sends indication information to the access network device, the indication information indicating a first adjustment amount, the first adjustment amount being used to adjust a transmission parameter of a pilot signal transmitted by the terminal, the transmission parameter including one or more of: a pilot signal phase difference corresponding to different subcarriers, a pilot signal phase difference corresponding to different antennas, and a pilot signal amplitude gain.

[0025] Since the terminal adjusts the transmission parameter of the pilot signal, the transmission parameter of the pilot signal measured by the illegal device will be inaccurate, and the illegal device cannot determine accurate positioning information based on the measured transmission parameter of the pilot signal, and thus cannot obtain the accurate location of the user. Therefore, based on the method described in the third aspect, it is beneficial to avoid the leakage of the location information of the user.

[0026] In a possible embodiment, the terminal can further send, to the access network device, a first request for requesting adjustment of the transmission parameter, and can further receive feedback information of the first request sent by the access network device, the feedback information indicating the transmission time-frequency resource of the indication information.

[0027] Based on the possible embodiment, the terminal can flexibly acquire the transmission time-frequency resource of the indication information according to actual conditions, without reserving the transmission time-frequency resource of the indication information for the terminal in advance, which is beneficial to avoiding resource waste.

[0028] In a possible embodiment, the indication information indicates the first adjustment amount, and includes: the indication information indicates an adjustment amount quantization rule and a quantized value of the first adjustment amount, and the adjustment amount quantization rule includes one or more of the following: a range of the adjustment amount of the transmission parameter or a quantization precision of the adjustment amount of the transmission parameter.

[0029] Based on the possible embodiment, the first adjustment amount can be accurately indicated.

[0030] In a possible embodiment, the indication information further indicates a downlink reference signal, and a direction of a transmission beam of the pilot signal sent by the terminal is the same as a direction of a reception beam of the downlink reference signal received by the terminal.

[0031] Based on the possible embodiment, the terminal can accurately determine the direction of the transmission beam of the pilot signal.

[0032] In a fourth aspect, an embodiment of the present application provides a communication method. The method can be applied to a network side, for example, can be implemented by an access network device of the network side, a module (for example, a circuit, a chip or a chip system, etc.) in the access network device, or a logic node, a logic module or software capable of realizing all or part of the function of the access network device. In the method, the access network device receives indication information sent by a terminal, the indication information indicating a first adjustment amount, the first adjustment amount being used for adjusting a transmission parameter of a pilot signal sent by the terminal, and the transmission parameter including one or more of the following: a pilot signal phase difference corresponding to different subcarriers, a pilot signal phase difference corresponding to different antennas, and a pilot signal amplitude gain.

[0033] In a possible embodiment, the access network device can further send, to a first device, the indication information, the first device being used for measuring the pilot signal sent by the terminal.

[0034] In a possible embodiment, the access network device can further receive a first request sent by the terminal, the first request being used for requesting adjustment of the transmission parameter, and the access network device can further send, to the terminal, feedback information of the first request, the feedback information indicating the transmission time-frequency resource of the indication information.

[0035] In a possible implementation, the access network device can further send, to the terminal, first signaling for enabling adjustment of the transmission parameter.

[0036] In a possible implementation, the access network device can further send, to the first device, second signaling for enabling correction of the transmission parameter of the pilot signal.

[0037] In a possible implementation, the indication information indicates the first adjustment amount, and includes: the indication information indicates an adjustment amount quantization rule and a quantized value of the first adjustment amount, and the adjustment amount quantization rule includes one or more of the following: a range of the adjustment amount of the transmission parameter or a quantization precision of the adjustment amount of the transmission parameter.

[0038] In a possible implementation, the indication information further indicates a downlink reference signal, and a direction of a transmission beam of the terminal for sending the pilot signal is the same as a direction of a reception beam of the terminal for receiving the downlink reference signal.

[0039] The beneficial effects of the fourth aspect can refer to the beneficial effects of the third aspect, and will not be repeated here.

[0040] In the fifth aspect, an embodiment of the present application provides a communication method. The method can be applied to a network side, for example, can be realized by a first device of the network side, a module (for example, a circuit, a chip or a chip system, etc.) in the first device, or a logic node, a logic module or software capable of realizing all or part of the functions of the first device. In the method:

[0041] The first device receives indication information sent by the access network device, the indication information indicating a first adjustment amount, the first adjustment amount being used for adjusting a transmission parameter of a pilot signal sent by a terminal, the transmission parameter including one or more of the following: a pilot signal phase difference corresponding to different subcarriers, a pilot signal phase difference corresponding to different antennas, and a pilot signal amplitude gain.

[0042] In a possible implementation, after receiving the indication information, the first device can further receive second signaling sent by the access network device, the second signaling being used for enabling correction of the transmission parameter of the pilot signal.

[0043] The beneficial effects of the fifth aspect can refer to the beneficial effects of the first aspect or the third aspect, and will not be repeated here.

[0044] In the sixth aspect, the present application provides a communication apparatus, which has the function of realizing any one of the first aspect to the fifth aspect, for example, the communication apparatus includes a module or unit or means corresponding to the operation involved in any one of the first aspect to the fifth aspect, which can be realized by software, or by hardware, or by a combination of software and hardware.

[0045] In a seventh aspect, the present application provides a communication apparatus, which comprises an interface circuit and one or more processors. The one or more processors are coupled with a memory. The memory is configured to store part or all of the computer programs or instructions necessary for implementing the functions related to any of the first aspect to the fifth aspect. The one or more processors can execute the computer programs or instructions, which, when executed, cause the communication apparatus to implement the method in any possible design or implementation manner of any of the first aspect to the fifth aspect. The interface circuit is configured to implement the communication function within the communication apparatus and / or the communication function between the communication apparatus and other apparatuses or components.

[0046] In a possible implementation, the processor is configured to communicate with other apparatuses or components via the interface circuit.

[0047] In a possible implementation, the communication apparatus can further comprise the memory.

[0048] The communication apparatus can be a terminal, a communication / processing module in the terminal, or a chip responsible for the communication function in the terminal. Alternatively, the communication apparatus can be an access network device, a module (such as a circuit, a chip or a chip system, etc.) in the access network device, or a logic node, a logic module or software capable of implementing all or part of the function of the access network device. Alternatively, the communication apparatus can be a first device, a module (such as a circuit, a chip or a chip system, etc.) in the first device, or a logic node, a logic module or software capable of implementing all or part of the function of the first device.

[0049] In an eighth aspect, the present application provides a communication system, which comprises a terminal and an access network device. In a possible implementation, the terminal can execute the method described in the first aspect, the access network device can execute the method described in the second aspect, or the communication system further comprises a first device, and the first device can execute the method described in the fifth aspect. In another possible implementation, the terminal can execute the method described in the third aspect, the access network device can execute the method described in the fourth aspect, or the communication system further comprises a first device, and the first device can execute the method described in the fifth aspect.

[0050] In a ninth aspect, the present application provides a computer readable storage medium, which stores computer readable instructions. When the computer readable instructions are read and executed by a computer, the computer is caused to execute the method in any possible implementation manner of any of the first aspect to the fifth aspect.

[0051] In a tenth aspect, the present application provides a computer program product, which, when executed by a computer, causes the computer to perform the method in any possible implementation of any one of the first aspect to the fifth aspect. BRIEF DESCRIPTION OF DRAWINGS

[0052] FIG. 1 is a schematic diagram of an architecture of a communication system 10 according to an embodiment of the present application;

[0053] FIG. 2 is a schematic diagram of an architecture of another communication system 20 according to an embodiment of the present application;

[0054] FIG. 3 is a schematic diagram of a communication method according to an embodiment of the present application;

[0055] FIG. 4 is a schematic diagram of a communication method according to an embodiment of the present application;

[0056] FIG. 5 is a schematic diagram of a communication method according to an embodiment of the present application;

[0057] FIG. 6 is a schematic diagram of a communication method according to an embodiment of the present application;

[0058] FIG. 7 is a schematic diagram of a communication method according to an embodiment of the present application;

[0059] FIG. 8 is a schematic diagram of a communication method according to an embodiment of the present application;

[0060] FIG. 9 is a schematic diagram of a communication method according to an embodiment of the present application;

[0061] FIG. 10 is a schematic diagram of a communication method according to an embodiment of the present application;

[0062] FIG. 11 is a schematic diagram of a possible communication apparatus according to an embodiment of the present application;

[0063] FIG. 12 is a schematic diagram of a possible communication apparatus according to an embodiment of the present application. DETAILED DESCRIPTION

[0064] In order to better understand the embodiments of the present application, first, the system architecture related to the embodiments of the present application is introduced as follows:

[0065] FIG. 1 is a schematic diagram of an architecture of a communication system 10 according to an embodiment of the present application. As shown in FIG. 1, the communication system 10 includes terminals and access network devices. The access network devices can send indication information to the terminals. Alternatively, the terminals can send indication information to the access network devices. The indication information is used to indicate a first adjustment amount. In this way, the terminals can send pilot signals whose transmission parameters are adjusted by the first adjustment amount to the access network devices. The transmission parameters include one or more of the following: phase differences of pilot signals corresponding to different subcarriers, phase differences of pilot signals corresponding to different antennas, amplitude gains of pilot signals. The access network devices can measure the pilot signals to obtain measurement results (i.e., the transmission parameters of the pilot signals), and correct the measurement results based on the first adjustment amount. The corrected measurement results can be used to determine the location information of the users.

[0066] The access network device, which can also be referred to as a radio access network device, a radio access network (RAN) node, a RAN entity, or an access node, is located in a RAN to help terminals access the communication system through wireless means. The RAN can be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, a 6th generation (6G) radio access system, and a future radio access system defined in the 3rd generation partnership project (3GPP). The RAN can also include two or more different radio access systems mentioned above. The RAN can also be an open RAN (O-RAN). The RAN can also be referred to as an access network (AN).

[0067] In an application scenario, the access network device can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5th generation (5G) mobile communication system, a next generation NodeB in a 6th generation (6G) mobile communication system, or a base station in a future mobile communication system. The access network device can be a macro base station, a micro base station, or an indoor station, and can also be a relay node or a donor node.

[0068] In another application scenario, wireless access can be provided for a terminal through cooperation of a plurality of access network devices, and different access network devices implement part of functions of a base station. For example, an access network device can be a central unit (CU), a distributed unit (DU), or a radio unit (RU). The CU here implements functions of a radio resource control protocol and a packet data convergence protocol (PDCP) of the base station, and can also implement a function of a service data adaptation protocol (SDAP); the DU implements functions of a radio link control layer and a medium access control (MAC) layer of the base station, and can also implement part of a physical layer or all of a physical layer. For specific descriptions of the above protocol layers, refer to relevant technical specifications of the 3GPP. The RU can be used to implement functions of transceiving a radio frequency signal. The CU and the DU can be two independent access network devices, or can be integrated in the same access network device, for example, integrated in a baseband unit (BBU). The RU can be included in a radio frequency device, for example, included in a remote radio unit (RRU) or an active antenna unit (AAU). The CU can be further divided into two types of access network devices: a CU-control plane and a CU-user plane.

[0069] In different systems, an access network device can have different names. For example, in an O-RAN system, a CU can be referred to as an open CU (O-CU), a DU can be referred to as an open DU (O-DU), and an RU can be referred to as an open RU (O-RU). The access network device in the embodiments of the present application can be implemented by means of a software module, a hardware module, or a combination of a software module and a hardware module. For example, the access network device can be a server loaded with a corresponding software module. The embodiments of the present application do not limit the specific technology and specific device form adopted by the access network device.

[0070] A terminal is a device with wireless transceiving function, which can send signals to an access network device or receive signals from the access network device. The terminal can also be referred to as a terminal device, a user equipment (UE), a mobile station, a mobile terminal, etc. The terminal can be widely applied to various scenarios, such as device-to-device (D2D) communication, vehicle to everything (V2X) communication, machine-type communication (MTC), internet of things (IOT), virtual reality, augmented reality, industrial control, automatic driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal can be a mobile phone, a tablet computer, a computer with wireless transceiving function, a wearable device, a vehicle, an airplane, a ship, a robot, a mechanical arm, a smart home device, etc. Embodiments of the present application do not limit the specific technology and specific device form of the terminal.

[0071] In embodiments of the present application, the functions of the access network device can also be performed by a module (such as a chip) in the access network device, or by a control subsystem containing the functions of the access network device. The control subsystem containing the functions of the access network device herein can be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal can also be performed by a module (such as a chip or modem) in the terminal, or by a device containing the functions of the terminal.

[0072] FIG. 2 is a schematic diagram of an architecture of another communication system 20 provided by embodiments of the present application. As shown in FIG. 2, the communication system 20 includes a terminal, an access network device, and a first device. The access network device can send indication information to the terminal and the first device. Alternatively, the terminal can send the indication information to the access network device, and the access network device can send the indication information to the first device. The indication information is used to indicate a first adjustment amount. The terminal can send a pilot signal whose transmission parameter is adjusted by the first adjustment amount to the first device. The transmission parameter includes one or more of the following: a pilot signal phase difference corresponding to different subcarriers, a pilot signal phase difference corresponding to different antennas, and an amplitude gain of the pilot signal. The first device can measure the pilot signal to obtain a measurement result (i.e., the transmission parameter of the pilot signal), and correct the measurement result based on the first adjustment amount. The corrected measurement result can be used to determine the position information of the user.

[0073] For the description of the terminal and the access network device, please refer to the description of the terminal and the access network device in the foregoing, which will not be repeated here. The first device can be a device with pilot signal measurement function.

[0074] The following explains some terms used in the embodiments of the present application to facilitate understanding by those skilled in the art. This part is only for the convenience of understanding and cannot be regarded as a disclosure or specific limitation of the technical solutions of the present application.

[0075] I. Beam

[0076] A beam is a kind of communication resource. A beam can be a wide beam, or a narrow beam, or other types of beams. The technology for forming a beam can be beamforming technology or other technical means. The beamforming technology can be digital beamforming technology, analog beamforming technology, or hybrid digital / analog beamforming technology. Different beams can be considered as different resources. The same information or different information can be transmitted through different beams. Alternatively, multiple beams with the same or similar communication characteristics can be regarded as one beam. One beam can include one or more antenna ports for transmitting data channels, control channels, and sounding signals, etc. For example, a transmit beam can refer to the distribution of signal strength in different directions in space after the signal is transmitted by an antenna, and a receive beam can refer to the distribution of signal strength in different directions in space of the wireless signal received by an antenna. It can be understood that one or more antenna ports forming a beam can also be regarded as an antenna port set.

[0077] When using low or medium frequency bands, signals can be transmitted omnidirectionally or through a relatively wide angle, while when using high frequency bands, thanks to the small carrier wavelength of high frequency communication systems, many antenna arrays can be arranged at the transmitting end and the receiving end to form an antenna array. The transmitting end transmits signals with certain beamforming weights to form beams with spatial directivity, and the receiving end receives signals with certain beamforming weights to improve the received power of signals at the receiving end and resist path loss.

[0078] II. Pilot signal

[0079] The pilot signal can also be referred to as a signal or a reference signal. The pilot signal in the embodiments of the present application is a pilot signal sent by a terminal, which can also be referred to as an uplink pilot signal. The uplink pilot signal can include, but is not limited to, a sounding reference signal (SRS), a physical uplink control channel de-modulation reference signal (PUCCH-DMRS), an uplink data channel de-modulation reference signal (PUSCH-DMRS), an uplink phase noise tracking signal (PTRS), an uplink positioning signal, and the like.

[0080] In order to avoid the leakage of the location information of the user, the embodiments of the present application provide a communication method and a communication device.

[0081] The communication method and the communication device will be further described below with reference to the accompanying drawings. It can be understood that the terminal, the access network device and the first device are taken as examples of the execution subject of the interaction in the present application, but the present application is not limited to the execution subject of the interaction. For example, the method performed by the terminal in the present application can also be implemented by a communication / processing module or a circuit or a chip responsible for communication / processing function in the terminal. The method performed by the access network device in the present application can also be implemented by a module (such as a circuit, a chip or a chip system, etc.), or a logic node, a logic module or software capable of implementing all or part of the function of the access network device. The method performed by the first device in the present application can also be implemented by a module (such as a circuit, a chip or a chip system, etc.) in the first device, or a logic node, a logic module or software capable of implementing all or part of the function of the first device.

[0082] Please refer to FIG. 3, which is a flowchart of a communication method provided by the embodiments of the present application, wherein:

[0083] 301. The access network device sends indication information to the terminal, the indication information indicating a first adjustment amount, the first adjustment amount being used for adjusting a transmission parameter of a pilot signal sent by the terminal. Correspondingly, the terminal can receive the indication information.

[0084] The transmission parameter includes one or more of the following: a pilot signal phase difference corresponding to different subcarriers, a pilot signal phase difference corresponding to different antennas, and an amplitude gain of the pilot signal. Correspondingly, the first adjustment amount includes one or more of the following: an adjustment amount of the pilot signal phase difference corresponding to different subcarriers, an adjustment amount of the pilot signal phase difference corresponding to different antennas, and an adjustment amount of the amplitude gain of the pilot signal. The description of the pilot signal can be referred to the foregoing description, which is not repeated here. The indication information can be understood as a configuration information, and the indication information indicates the first adjustment amount, which can also be understood as the indication information configuring the first adjustment amount.

[0085] Optionally, the pilot signal phase difference corresponding to different subcarriers can be a pilot signal phase difference between adjacent subcarriers.

[0086] For example, assuming that the terminal transmits a pilot signal on subcarrier 1 and subcarrier 2, the pilot signal phase difference corresponding to different subcarriers can be a difference between the phase of the pilot signal on subcarrier 1 and the phase of the pilot signal on subcarrier 2.

[0087] For another example, assuming that the terminal transmits a pilot signal on subcarrier 1, subcarrier 2 and subcarrier 3. Subcarrier 1 is adjacent to subcarrier 2, and subcarrier 2 is adjacent to subcarrier 3. The pilot signal phase difference corresponding to different subcarriers can include phase difference 1 and phase difference 2. The phase difference 1 is a difference between the phase of the pilot signal on subcarrier 1 and the phase of the pilot signal on subcarrier 2. The phase difference 2 is a difference between the phase of the pilot signal on subcarrier 2 and the phase of the pilot signal on subcarrier 3.

[0088] Optionally, the pilot signal phase difference corresponding to different antennas can be a pilot signal phase difference between adjacent antennas.

[0089] For example, assuming that the terminal transmits a pilot signal through antenna 1 and antenna 2, the pilot signal phase difference corresponding to different antennas can be a difference between the phase of the pilot signal transmitted by antenna 1 and the phase of the pilot signal transmitted by antenna 2.

[0090] For another example, assuming that the terminal transmits a pilot signal through antenna 1, antenna 2 and antenna 3. Antenna 1 is adjacent to antenna 2, and antenna 2 is adjacent to antenna 3. The pilot signal phase difference corresponding to different antennas can include phase difference 1 and phase difference 2. The phase difference 1 is a difference between the phase of the pilot signal transmitted by antenna 1 and the phase of the pilot signal transmitted by antenna 2. The phase difference 2 is a difference between the phase of the pilot signal transmitted by antenna 2 and the phase of the pilot signal transmitted by antenna 3.

[0091] In a possible embodiment, the indication information indicates the implementation of the first adjustment amount in the following manner: the indication information indicates an adjustment amount quantization rule and a quantized value of the first adjustment amount, the adjustment amount quantization rule including one or more of the following: a range of the adjustment amount of the transmission parameter or a quantization precision of the adjustment amount of the transmission parameter. Based on this possible embodiment, the first adjustment amount can be accurately indicated.

[0092] The adjustment amount quantization rule is used to quantize the adjustment amount of the transmission parameter, and can also be referred to as an adjustment amount quantization parameter or other names, which are not limited in the embodiments of the present application. The quantization precision of the adjustment amount can also be referred to as a quantization step of the adjustment amount or other names, which are not limited in the embodiments of the present application. The terminal knows the adjustment amount quantization rule and the quantized value of the first adjustment amount, and can determine the specific value of the first adjustment amount.

[0093] For example, it is assumed that the transmission parameter includes the adjustment amount of the phase difference of the pilot signal corresponding to different subcarriers. The adjustment amount quantization rule includes the range of the adjustment amount of the transmission parameter and the quantization precision of the adjustment amount of the transmission parameter. The range of the adjustment amount of the transmission parameter is -30°-30°. The quantization precision of the adjustment amount of the transmission parameter is 10°. Then, -30° can be quantized as 0. -20° can be quantized as 1. -10° can be quantized as 2. 0° can be quantized as 3. 10° can be quantized as 4. 20° can be quantized as 5. 30° can be quantized as 6. If the indication information indicates that the quantized value of the first adjustment amount is 2, the terminal can determine the first adjustment amount as -10° in combination with the adjustment amount quantization rule.

[0094] Optionally, if the indication information indicates the range of the adjustment amount of the transmission parameter and does not indicate the quantization precision of the adjustment amount of the transmission parameter, the quantization precision of the adjustment amount of the transmission parameter can be pre-defined in the protocol. If the indication information indicates the quantization precision of the adjustment amount of the transmission parameter and does not indicate the range of the adjustment amount of the transmission parameter, the range of the adjustment amount of the transmission parameter can be pre-defined in the protocol.

[0095] In another possible embodiment, the indication information can indicate the quantized value of the first adjustment amount and does not indicate the adjustment amount quantization rule. The range of the adjustment amount of the transmission parameter and the quantization precision of the adjustment amount of the transmission parameter can be pre-defined in the protocol.

[0096] In a possible embodiment, the indication information further indicates a downlink reference signal, and the direction of the transmission beam of the terminal for sending the pilot signal is the same as the direction of the reception beam of the terminal for receiving the downlink reference signal. Based on this possible embodiment, the terminal can accurately determine the direction of the transmission beam of the pilot signal.

[0097] In the possible embodiment, if the terminal sends the pilot signal to the access network device, i.e., the access network device is a measurement device of the pilot signal. The indication information indicates the purpose of the downlink reference signal, which informs the terminal that the access network device expects to receive the pilot signal in the direction of the transmission beam of the downlink reference signal. After receiving the indication information, the terminal sends the pilot signal in the direction of the reception beam of the downlink reference signal. Accordingly, the direction of the reception beam of the access network device for receiving the pilot signal is the same as the direction of the transmission beam of the access network device for sending the downlink reference signal.

[0098] If the terminal sends the pilot signal to the first device, i.e., the first device is a measurement device of the pilot signal. The indication information indicates the purpose of the downlink reference signal, which informs the terminal that the first device expects to receive the pilot signal in the direction of the transmission beam of the downlink reference signal. After receiving the indication information, the terminal sends the pilot signal in the direction of the reception beam of the downlink reference signal. Accordingly, the direction of the reception beam of the first device for receiving the pilot signal is the same as the direction of the transmission beam of the first device for sending the downlink reference signal.

[0099] Optionally, if the transmission parameter includes the amplitude gain of the pilot signal, the indication information further indicates the downlink reference signal, and the terminal can adjust the amplitude gain of the pilot signal by adjusting the beam gain of the direction of the reception beam of the downlink reference signal. Alternatively, the terminal can also adjust the amplitude gain of the pilot signal in other manners, which are not limited in the embodiments of the present application.

[0100] In a possible embodiment, the first adjustment amount can be used to adjust the transmission parameter of one or more reflection paths of the pilot signal. The reflection path of the pilot signal can also be understood as the transmission path of the pilot signal.

[0101] In a possible embodiment, the indication information indicates not only the first adjustment amount but also one or more other adjustment amounts, the first adjustment amount is used to adjust the transmission parameter of one reflection path of the pilot signal, and the one or more other adjustment amounts are used to adjust the transmission parameter of one or more other reflection paths of the pilot signal.

[0102] In a possible embodiment, the indication information can further indicate the maximum number of reflection paths for adjusting the transmission parameter. For example, if the indication information indicates that the maximum number of reflection paths for adjusting the transmission parameter is 2, the terminal can at most adjust the transmission parameter of two reflection paths of the pilot signal.

[0103] In the embodiments of the present application, after receiving the indication information, the terminal can send the pilot signal whose transmission parameter is adjusted by the first adjustment amount, that is, the terminal can adjust the transmission parameter of the pilot signal based on the first adjustment amount. Correspondingly, after measuring the transmission parameter of the pilot signal, the legitimate measurement device can correct the measured transmission parameter of the pilot signal based on the first adjustment amount to obtain the accurate transmission parameter of the pilot signal.

[0104] The transmission parameter of the pilot signal can be used to determine the positioning information, which includes one or more of the following: the angle of arrival (elevation angle and / or horizontal angle) of the pilot signal, the angle of transmission (elevation angle and / or horizontal angle) of the pilot signal, or the distance between the terminal and the measurement device (such as the access network device or the first device). The positioning information can be used to determine the location of the user. Since the terminal adjusts the transmission parameter of the pilot signal, the transmission parameter of the pilot signal measured by the illegal device will be inaccurate, and the illegal device cannot determine the accurate positioning information based on the measured transmission parameter of the pilot signal, and thus cannot obtain the accurate location of the user. Therefore, based on the method described in FIG. 3, it is beneficial to avoid the leakage of the location information of the user.

[0105] Please refer to FIG. 4, which is a flow diagram of a communication method provided by an embodiment of the present application, wherein:

[0106] 401. (Optional) The terminal sends the capability information to the access network device, and the capability information indicates that the terminal has the capability of adjusting the transmission parameter. Correspondingly, the access network device can receive the capability information.

[0107] In the embodiments of the present application, after receiving the capability information, the access network device can determine that the terminal has the capability of adjusting the transmission parameter based on the capability information, and then the access network device can send the indication information to the terminal, so that the terminal can adjust the transmission of the pilot signal based on the first adjustment amount. Therefore, by performing step 401, the access network device can accurately determine whether to send the indication information to the terminal.

[0108] In a possible embodiment, the capability information can also indicate the maximum value of the quantization precision of the adjustment amount of the transmission parameter. Alternatively, the capability information can not indicate the maximum value of the quantization precision of the adjustment amount of the transmission parameter, and the maximum value of the quantization precision of the adjustment amount of the transmission parameter can be pre-defined by the protocol.

[0109] 402. The access network device sends the indication information to the terminal, and the indication information indicates the first adjustment amount, which is used to adjust the transmission parameter of the pilot signal sent by the terminal. The transmission parameter includes one or more of the following: the phase difference of the pilot signal corresponding to different subcarriers, the phase difference of the pilot signal corresponding to different antennas, and the amplitude gain of the pilot signal. Correspondingly, the terminal can receive the indication information.

[0110] The specific description of step 402 can be referred to the description in step 301, and will not be repeated here.

[0111] 403. (Optional) The terminal sends the confirmation feedback of the indication information to the access network device. Correspondingly, the access network device can receive the confirmation feedback.

[0112] In the embodiment of the present application, the confirmation feedback indicates that the terminal successfully receives the indication information. After receiving the confirmation feedback of the indication information, the access network device can determine that the terminal successfully receives the indication information, and further determine that the terminal will send the pilot signal with the transmission parameter adjusted by the first adjustment amount. Thus, the access network device can correct the measured transmission parameter of the pilot signal by the first adjustment amount. Therefore, by making the terminal send the confirmation feedback of the indication information to the access network device, the consistency of the processing of the transmission parameter of the pilot signal by the terminal and the access network device can be ensured, and the access network device can accurately determine the transmission parameter of the pilot signal.

[0113] 404. (Optional) The access network device sends the first signaling to the terminal, and the first signaling is used to enable the adjustment of the transmission parameter of the pilot signal. Correspondingly, the terminal can receive the first signaling.

[0114] In the embodiment of the present application, by making the access network device send the first signaling to the terminal, the adjustment of the transmission parameter of the pilot signal can be more flexibly enabled.

[0115] In a possible embodiment, the indication information can indicate a plurality of adjustment amounts, and the plurality of adjustment amounts includes the first adjustment amount. The first signaling can also indicate the first adjustment amount, and the first signaling is used to enable the adjustment of the transmission parameter by the first adjustment amount. Alternatively, the first signaling can indicate the first adjustment amount and other adjustment amount, and the first signaling is used to enable the adjustment of the transmission parameter by the first adjustment amount and the other adjustment amount. That is, the indication information can indicate a plurality of adjustment amounts, and the first signaling can enable the adjustment of the transmission parameter by one or more adjustment amounts indicated by the indication information.

[0116] In a possible embodiment, the indication information can indicate a plurality of adjustment amounts, and the plurality of adjustment amounts includes the first adjustment amount. The first signaling can also not indicate the adjustment amount, and the first signaling can be an enabling signal. After receiving the enabling signal, the terminal can default to enable the adjustment of the transmission parameter of the pilot signal by one or more adjustment amounts indicated by the indication information.

[0117] In another possible implementation, the indication information can indicate one adjustment amount, and the one adjustment amount is the first adjustment amount. The first signaling can also indicate the first adjustment amount, and the first signaling is used to enable adjustment of the transmission parameter by the first adjustment amount. Alternatively, the first signaling can not indicate the first adjustment amount, and the first signaling can be an enabling signal, and the terminal receives the enabling signal to enable adjustment of the transmission parameter by the first adjustment amount by default.

[0118] In another possible implementation, the access network device can also not send the first signaling to the terminal. After receiving the indication information, the terminal can enable adjustment of the transmission parameter by the adjustment amount indicated by the indication information by default.

[0119] 405. (Optional) The terminal sends a pilot signal with the transmission parameter adjusted by the first adjustment amount to the access network device.

[0120] 406. (Optional) The access network device measures the pilot signal to obtain the transmission parameter of the pilot signal, and corrects the transmission parameter of the pilot signal based on the first adjustment amount.

[0121] The access network device is a measurement device used to measure the pilot signal. The access network device can correct the transmission parameter of the pilot signal obtained by measurement based on the first adjustment amount to obtain the transmission parameter of the corrected pilot signal, i.e., the accurate transmission parameter of the pilot signal. In this way, the position of the user can be accurately determined based on the transmission parameter of the corrected pilot signal.

[0122] Please refer to FIG. 5, which is a flow diagram of a communication method provided by the embodiments of the present application, wherein:

[0123] 501. The access network device sends indication information to the terminal, and the indication information indicates a first adjustment amount, and the first adjustment amount is used to adjust the transmission parameter of the pilot signal sent by the terminal. The transmission parameter includes one or more of the following: the phase difference of the pilot signal corresponding to different subcarriers, the phase difference of the pilot signal corresponding to different antennas, and the amplitude gain of the pilot signal. Correspondingly, the terminal can receive the indication information.

[0124] The specific description of step 501 can be referred to the description under step 301, and will not be repeated here.

[0125] 502. The access network device sends the indication information to the first device. Correspondingly, the first device can receive the indication information.

[0126] The first device is a measuring device used to measure the pilot signal. The access network device sends the indication information to the first device. After measuring the pilot signal, the first device can correct the transmission parameters of the measured pilot signal based on a first adjustment amount to obtain accurate transmission parameters.

[0127] Please refer to Figure 6, which is a flowchart illustrating a communication method provided in an embodiment of this application, wherein:

[0128] 601. (Optional) The terminal sends capability information to the access network device, indicating that the terminal has the ability to adjust transmission parameters. Accordingly, the access network device may receive the capability information.

[0129] For a detailed description of step 601, please refer to the description under step 401, which will not be repeated here.

[0130] 602. The access network device sends an indication message to the terminal, which indicates a first adjustment amount used to adjust the transmission parameters of the pilot signal sent by the terminal. The transmission parameters include one or more of the following: the phase difference of the pilot signal corresponding to different subcarriers, the phase difference of the pilot signal corresponding to different antennas, and the amplitude gain of the pilot signal. Accordingly, the terminal can receive the indication message.

[0131] For a detailed description of step 602, please refer to the description under step 301, which will not be repeated here.

[0132] 603. (Optional) The terminal sends an acknowledgment of the indication information to the access network device. Accordingly, the access network device may receive the acknowledgment.

[0133] By having the terminal send confirmation feedback of the indication information to the access network device, it is beneficial to ensure the consistency of the terminal and the first device in processing the transmission parameters of the pilot signal, and to help the first device accurately determine the transmission parameters of the pilot signal.

[0134] 604. The access network device sends an indication message to the first device. Accordingly, the first device can receive the indication message.

[0135] For a detailed description of step 604, please refer to the description under step 502, which will not be repeated here.

[0136] 605. (Optional) The first device sends an acknowledgment of the indication information to the access network device. Accordingly, the access network device may receive the acknowledgment.

[0137] By causing the first device to send the confirmation feedback of the indication information to the access network device, consistency of the terminal and the first device in processing the transmission parameter of the pilot signal is guaranteed, and the first device can accurately determine the transmission parameter of the pilot signal.

[0138] 606、(Optionally) the access network device sends first signaling to the terminal, and the first signaling is used for enabling adjustment of the transmission parameter of the pilot signal. Correspondingly, the terminal can receive the first signaling.

[0139] The specific introduction of step 606 can be referred to the description under step 404, and details are not described herein.

[0140] 607、(Optionally) the access network device sends second signaling to the first device, and the second signaling is used for enabling correction of the measured transmission parameter of the pilot signal. Correspondingly, the first device can receive the second signaling.

[0141] Step 607 is similar to the implementation of step 606, and the implementation of step 606 can be referred to, and details are not described herein.

[0142] 608、(Optionally) the terminal sends the pilot signal adjusted by the first adjustment amount to the first device.

[0143] 609、(Optionally) the first device measures the pilot signal to obtain the transmission parameter of the pilot signal, and corrects the transmission parameter of the pilot signal based on the first adjustment amount.

[0144] The first device is a measurement device used for measuring the pilot signal. The first device can correct the measured transmission parameter of the pilot signal based on the first adjustment amount to obtain the corrected transmission parameter of the pilot signal, i.e., the accurate transmission parameter of the pilot signal. Thus, the position of the user can be accurately determined based on the corrected transmission parameter of the pilot signal.

[0145] Please refer to FIG. 7, which is a flow diagram of a communication method provided by an embodiment of the present application, wherein:

[0146] 701、The terminal sends indication information to the access network device, and the indication information indicates a first adjustment amount, which is used for adjusting the transmission parameter of the pilot signal sent by the terminal. The transmission parameter includes one or more of the following: pilot signal phase difference corresponding to different subcarriers, pilot signal phase difference corresponding to different antennas, and amplitude gain of the pilot signal. Correspondingly, the access network device can receive the indication information.

[0147] That is, the terminal can report the first adjustment amount to the access network device. The related description about the indication information can be referred to the description under step 301, which is not repeated here. The possible embodiments and optional manners under step 301 can also be applicable to the embodiments corresponding to FIG. 7, which is not repeated here.

[0148] In the embodiments of the present application, after the terminal sends the indication information, the terminal can send the pilot signal whose transmission parameter is adjusted by the first adjustment amount, that is, the terminal can adjust the transmission parameter of the pilot signal based on the first adjustment amount. Correspondingly, after the legitimate measurement device measures the transmission parameter of the pilot signal, the transmission parameter of the pilot signal measured can be corrected based on the first adjustment amount to obtain the accurate transmission parameter of the pilot signal.

[0149] The transmission parameter of the pilot signal can be used to determine the positioning information, which includes one or more of the following: the angle of arrival (elevation angle and / or horizontal angle) of the pilot signal, the angle of transmission (elevation angle and / or horizontal angle) of the pilot signal, or the distance between the terminal and the measurement device (such as the access network device or the first device). The positioning information can be used to determine the location of the user. Since the terminal adjusts the transmission parameter of the pilot signal, the transmission parameter of the pilot signal measured by the illegal device will be inaccurate, and the illegal device cannot determine the accurate positioning information based on the measured transmission parameter of the pilot signal, and thus cannot obtain the accurate location of the user. Therefore, based on the method described in FIG. 7, it is beneficial to avoid the leakage of the location information of the user.

[0150] Please refer to FIG. 8, which is a flow diagram of a communication method provided by an embodiment of the present application, wherein:

[0151] 801. (Optional) The terminal sends a first request to the access network device, and the first request is used to request to adjust the transmission parameter. Correspondingly, the access network device can receive the first request.

[0152] 802. (Optional) The access network device sends feedback information of the first request to the terminal, and the feedback information indicates the transmission time-frequency resource of the indication information. Correspondingly, the terminal can receive the feedback information.

[0153] In the embodiments of the present application, after the terminal receives the feedback information, the terminal can send the indication information on the transmission time-frequency resource indicated by the feedback information. By performing step 801 and step 802, the terminal can flexibly obtain the transmission time-frequency resource of the indication information according to the actual situation, and there is no need to reserve the transmission time-frequency resource of the indication information for the terminal in advance, which is beneficial to avoid resource waste.

[0154] In another possible embodiment, the terminal can also not send the first request to the access network device, and the terminal can send the indication information on the transmission time-frequency resource defined by the protocol in advance.

[0155] 803. The terminal sends indication information to the access network device, the indication information indicating a first adjustment amount, the first adjustment amount being used to adjust a transmission parameter of a pilot signal transmitted by the terminal. The transmission parameter comprises one or more of the following: a phase difference of the pilot signal corresponding to different subcarriers, a phase difference of the pilot signal corresponding to different antennas, an amplitude gain of the pilot signal. Correspondingly, the access network device can receive the indication information.

[0156] The specific description of step 803 can be referred to the description in step 701, and will not be repeated here.

[0157] 804. (Optionally) The access network device sends a confirmation feedback of the indication information to the terminal. Correspondingly, the terminal can receive the confirmation feedback.

[0158] By causing the access network device to send the confirmation feedback of the indication information to the terminal, the consistency of the processing of the transmission parameter of the pilot signal by the terminal and the access network device is guaranteed, and the access network device can accurately determine the transmission parameter of the pilot signal.

[0159] Optionally, the access network device can further send a first signaling to the terminal, the first signaling being used to enable the adjustment of the transmission parameter of the pilot signal. Correspondingly, the terminal can receive the first signaling. How the access network device enables the adjustment of the transmission parameter of the pilot signal can be referred to the description in step 404, and will not be repeated here.

[0160] 805. (Optionally) The terminal sends a pilot signal with the transmission parameter adjusted by the first adjustment amount to the access network device.

[0161] 806. (Optionally) The access network device measures the pilot signal to obtain the transmission parameter of the pilot signal, and corrects the transmission parameter of the pilot signal based on the first adjustment amount.

[0162] The access network device is a measurement device used to measure the pilot signal. The access network device can correct the transmission parameter of the pilot signal obtained by measurement based on the first adjustment amount to obtain the corrected transmission parameter of the pilot signal, i.e., the accurate transmission parameter of the pilot signal. Thus, the position of the user can be accurately determined based on the corrected transmission parameter of the pilot signal.

[0163] Please refer to FIG. 9, which is a flow diagram of a communication method provided by an embodiment of the present application, wherein:

[0164] 901、The terminal sends indication information to the access network device, the indication information indicating a first adjustment amount, the first adjustment amount being used to adjust a transmission parameter of a pilot signal sent by the terminal. The transmission parameter comprises one or more of the following: a pilot signal phase difference corresponding to different subcarriers, a pilot signal phase difference corresponding to different antennas, and a pilot signal amplitude gain. Correspondingly, the access network device can receive the indication information.

[0165] The specific description of step 901 can be referred to the description in step 701, and will not be repeated here.

[0166] 902、The access network device sends indication information to the first device. Correspondingly, the first device can receive the indication information.

[0167] The first device is a measurement device used to measure the pilot signal. By sending the indication information to the first device, the first device can correct the transmission parameter of the pilot signal based on the first adjustment amount after measuring the pilot signal, so as to obtain the accurate transmission parameter of the pilot signal.

[0168] Please refer to FIG. 10, which is a flow diagram of a communication method provided by an embodiment of the present application, wherein:

[0169] 1001、(Optional) The terminal sends a first request to the access network device, the first request being used to request adjustment of a transmission parameter. Correspondingly, the access network device can receive the first request.

[0170] 1002、(Optional) The access network device sends feedback information of the first request to the terminal, the feedback information indicating a transmission time-frequency resource of the indication information. Correspondingly, the terminal can receive the feedback information.

[0171] The specific description of steps 1001 and 1002 can be referred to the description in steps 801 and 802, and will not be repeated here.

[0172] 1003、The terminal sends indication information to the access network device, the indication information indicating a first adjustment amount, the first adjustment amount being used to adjust a transmission parameter of a pilot signal sent by the terminal. The transmission parameter comprises one or more of the following: a pilot signal phase difference corresponding to different subcarriers, a pilot signal phase difference corresponding to different antennas, and a pilot signal amplitude gain. Correspondingly, the access network device can receive the indication information.

[0173] The specific description of step 1003 can be referred to the description in step 701, and will not be repeated here.

[0174] 1004、(Optional) The access network device sends an acknowledgement feedback of the indication information to the terminal. Correspondingly, the terminal can receive the acknowledgement feedback.

[0175] By causing the access network device to send the confirmation feedback of the indication information to the terminal, consistency of the terminal and the first device in processing the transmission parameter of the pilot signal is guaranteed, and the first device can accurately determine the transmission parameter of the pilot signal.

[0176] 1005. The access network device sends indication information to the first device. Accordingly, the first device can receive the indication information.

[0177] The specific introduction of step 1005 can be referred to the description under step 902, which is not described here.

[0178] 1006. (Optional) The first device sends the confirmation feedback of the indication information to the access network device. Accordingly, the access network device can receive the confirmation feedback.

[0179] By causing the first device to send the confirmation feedback of the indication information to the access network device, consistency of the terminal and the first device in processing the transmission parameter of the pilot signal is guaranteed, and the first device can accurately determine the transmission parameter of the pilot signal.

[0180] Optionally, the access network device can also send a first signaling to the terminal, the first signaling being used to enable adjustment of the transmission parameter of the pilot signal. Accordingly, the terminal can receive the first signaling. How the access network device enables adjustment of the transmission parameter of the pilot signal can be referred to the description under step 404, which is not described here.

[0181] Optionally, the access network device can also send a second signaling to the first device, the second signaling being used to enable correction of the measured transmission parameter of the pilot signal. Accordingly, the terminal can receive the second signaling. The specific implementation of how the access network device enables correction of the measured transmission parameter of the pilot signal can be referred to the specific implementation of how the access network device enables adjustment of the transmission parameter of the pilot signal, which is not described here.

[0182] 1007. (Optional) The terminal sends the pilot signal with the transmission parameter adjusted by the first adjustment amount to the first device.

[0183] 1008. (Optional) The first device measures the pilot signal to obtain the transmission parameter of the pilot signal, and corrects the transmission parameter of the pilot signal based on the first adjustment amount.

[0184] The first device is a measurement device used to measure the pilot signal. The first device can correct the measured transmission parameter of the pilot signal based on the first adjustment amount to obtain the corrected transmission parameter of the pilot signal, i.e. the accurate transmission parameter of the pilot signal. Thus, the position of the terminal can be accurately determined based on the corrected transmission parameter of the pilot signal.

[0185] It should be noted that, in order to realize the functions in the above embodiments, the access network device and the terminal comprise corresponding hardware structures and / or software modules for performing respective functions. Those skilled in the art should easily understand that, in combination with the units and method steps of the examples described in the embodiments disclosed in the present application, the present application can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is realized in the form of hardware or computer software driving hardware depends on the specific application scenarios and design constraints of the technical solutions.

[0186] FIG. 11 is a structural schematic diagram of a possible communication apparatus provided by the embodiments of the present application. The communication apparatus can be used to realize the functions of the terminal or the access network device or the first device in the above method embodiments, and thus can also realize the beneficial effects possessed by the above method embodiments. In the embodiments of the present application, the communication apparatus can be a terminal or an access network device or a first device, and can also be a module (such as a chip) applied to a terminal or an access network device or a first device.

[0187] As shown in FIG. 11, the communication apparatus 1100 comprises a processing unit 1110 and a transceiver unit 1120. The communication apparatus 1100 is used to realize the functions of the terminal or the access network device or the first device in the method embodiments shown in any one of FIGS. 3-10.

[0188] When the communication apparatus 1100 is used to realize the functions of the terminal, the processing unit 1110 is configured to:

[0189] The transceiver unit 1120 is configured to receive indication information sent by the access network device, the indication information indicating a first adjustment amount, the first adjustment amount being used to adjust a transmission parameter of a pilot signal sent by the terminal, the transmission parameter comprising one or more of the following: a pilot signal phase difference corresponding to different subcarriers, a pilot signal phase difference corresponding to different antennas, and a pilot signal amplitude gain.

[0190] In a possible embodiment, the transceiver unit 1120 is further configured to, after receiving the indication information sent by the access network device, receive first signaling sent by the access network device, the first signaling being used to enable adjustment of the transmission parameter.

[0191] In a possible embodiment, the transceiver unit 1120 is further configured to, before receiving the indication information sent by the access network device, send capability information to the access network device, the capability information indicating that the terminal has the capability of adjusting the transmission parameter.

[0192] In a possible embodiment, the indication information indicating the first adjustment amount comprises: the indication information indicating an adjustment amount quantization rule and a quantized value of the first adjustment amount, the adjustment amount quantization rule comprising one or more of the following: a range of the adjustment amount of the transmission parameter or a quantization precision of the adjustment amount of the transmission parameter.

[0193] In a possible implementation, the indication information further indicates a downlink reference signal; a direction of a transmission beam of the terminal for sending the pilot signal is the same as a direction of a reception beam of the terminal for receiving the downlink reference signal.

[0194] When the communication apparatus 1100 is used to implement the function of the access network device:

[0195] The transceiver 1120 is configured to send, to the terminal, indication information indicating a first adjustment amount, the first adjustment amount being used to adjust a transmission parameter of a pilot signal sent by the terminal, the transmission parameter including one or more of the following: a pilot signal phase difference corresponding to different subcarriers, a pilot signal phase difference corresponding to different antennas, and a pilot signal amplitude gain.

[0196] In a possible implementation, the transceiver 1120 is further configured to send, to the first device, indication information, the first device being used to measure the pilot signal sent by the terminal.

[0197] In a possible implementation, the transceiver 1120 is further configured to, after sending the indication information to the terminal, send, to the terminal, first signaling used to enable adjustment of the transmission parameter.

[0198] In a possible implementation, the transceiver 1120 is further configured to, after sending the indication information to the first device, send, to the first device, second signaling used to enable correction of the transmission parameter of the pilot signal.

[0199] In a possible implementation, the transceiver 1120 is further configured to, before sending the indication information to the terminal, receive capability information sent by the terminal, the capability information indicating that the terminal has the capability of adjusting the transmission parameter.

[0200] In a possible implementation, the indication information indicates the first adjustment amount, including: the indication information indicates an adjustment amount quantization rule and a quantized value of the first adjustment amount, the adjustment amount quantization rule including one or more of the following: a range of the adjustment amount of the transmission parameter or a quantization precision of the adjustment amount of the transmission parameter.

[0201] In a possible implementation, the indication information further indicates a downlink reference signal; a direction of a transmission beam of the terminal for sending the pilot signal is the same as a direction of a reception beam of the terminal for receiving the downlink reference signal.

[0202] When the communication apparatus 1100 is used to implement the function of the first device:

[0203] The transceiver 1120 is configured to receive indication information sent by the access network device, the indication information indicating a first adjustment amount, the first adjustment amount being used to adjust a transmission parameter of a pilot signal sent by the terminal, the transmission parameter including one or more of the following: a pilot signal phase difference corresponding to different subcarriers, a pilot signal phase difference corresponding to different antennas, and a pilot signal amplitude gain.

[0204] In a possible implementation, the transceiver 1120 is further configured to, after receiving the indication information, receive second signaling sent by the access network device, the second signaling being used to enable modification of the transmission parameter of the pilot signal.

[0205] When the communication apparatus 1100 is configured to implement the function of the terminal, the transceiver 1120 is configured to:

[0206] The transceiver 1120 is configured to send indication information to the access network device, the indication information indicating a first adjustment amount, the first adjustment amount being used to adjust a transmission parameter of a pilot signal sent by the terminal, the transmission parameter including one or more of the following: a pilot signal phase difference corresponding to different subcarriers, a pilot signal phase difference corresponding to different antennas, and a pilot signal amplitude gain.

[0207] In a possible implementation, the transceiver 1120 is further configured to send a first request to the access network device, the first request being used to request adjustment of the transmission parameter; and the transceiver 1120 is further configured to receive feedback information of the first request sent by the access network device, the feedback information indicating a transmission time-frequency resource of the indication information.

[0208] In a possible implementation, the transceiver 1120 is further configured to, after sending the indication information, receive first signaling sent by the access network device, the first signaling being used to enable adjustment of the transmission parameter.

[0209] In a possible implementation, the indication information indicating the first adjustment amount includes: the indication information indicating an adjustment amount quantization rule and a quantized value of the first adjustment amount, the adjustment amount quantization rule including one or more of the following: a range of the adjustment amount of the transmission parameter or a quantization precision of the adjustment amount of the transmission parameter.

[0210] In a possible implementation, the indication information further indicates a downlink reference signal; a direction of a transmission beam of the terminal for sending the pilot signal is the same as a direction of a reception beam of the terminal for receiving the downlink reference signal.

[0211] When the communication apparatus 1100 is configured to implement the function of the access network device, the transceiver 1120 is configured to:

[0212] The transceiver 1120 is configured to receive indication information sent by the terminal, the indication information indicating a first adjustment amount, the first adjustment amount being used to adjust a transmission parameter of a pilot signal sent by the terminal, the transmission parameter including one or more of the following: a pilot signal phase difference corresponding to different subcarriers, a pilot signal phase difference corresponding to different antennas, and a pilot signal amplitude gain.

[0213] In a possible implementation, the transceiver 1120 is further configured to send, to a first device, indication information, the first device being configured to measure the pilot signal sent by the terminal.

[0214] In a possible implementation, the transceiver 1120 is further configured to receive a first request sent by the terminal, the first request being used to request adjustment of the transmission parameter; and the transceiver 1120 is further configured to send, to the terminal, feedback information of the first request, the feedback information indicating a transmission time-frequency resource of the indication information.

[0215] In a possible implementation, the transceiver 1120 is further configured to send, to the terminal, first signaling for enabling adjustment of the transmission parameter after receiving the indication information.

[0216] In a possible implementation, the transceiver 1120 is further configured to send, to the first device, second signaling for enabling correction of the transmission parameter of the pilot signal after sending the indication information to the first device.

[0217] In a possible implementation, the indication information indicating the first adjustment amount includes: the indication information indicating an adjustment amount quantization rule and a quantized value of the first adjustment amount, the adjustment amount quantization rule including one or more of the following: a range of the adjustment amount of the transmission parameter or a quantization precision of the adjustment amount of the transmission parameter.

[0218] In a possible implementation, the indication information further indicates a downlink reference signal; a direction of a transmission beam of the terminal sending the pilot signal is the same as a direction of a reception beam of the terminal receiving the downlink reference signal.

[0219] As shown in FIG. 12, the communication apparatus 1200 includes a processor 1210 and an interface circuit 1220. The processor 1210 and the interface circuit 1220 are coupled to each other. It can be understood that the interface circuit 1220 can be a transceiver or an input / output interface. Optionally, the communication apparatus 1200 can further include a memory 1230 configured to store instructions executed by the processor 1210 or store input data required by the processor 1210 to execute instructions or store data generated after the processor 1210 executes instructions.

[0220] The processor 1210 is configured to implement the functions of the processing unit 1110 described above, and the interface circuit 1220 is configured to implement the functions of the transceiver 1120 described above.

[0221] When the communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the method embodiments. The terminal chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal, and the information is sent by the access network device to the terminal; or the terminal chip sends information to other modules (such as a radio frequency module or an antenna) in the terminal, and the information is sent by the terminal to the access network device or the first device.

[0222] When the communication device is a module applied to an access network device, the access network device module implements the functions of the access network device in the method embodiments. The access network device module receives information from other modules (such as a radio frequency module or an antenna) in the access network device, and the information is sent by the terminal or the first device to the access network device; or the access network device module sends information to other modules (such as a radio frequency module or an antenna) in the access network device, and the information is sent by the access network device to the terminal or the first device. The access network device module herein can be a baseband chip of the access network device, or a DU or other module, and the DU herein can be a DU under an open radio access network (O-RAN) architecture.

[0223] When the communication device is a module applied to a first device, the first device module implements the functions of the first device in the method embodiments. The first device module receives information from other modules (such as a radio frequency module or an antenna) in the first device, and the information is sent by the terminal or the access network device to the first device; or the first device module sends information to other modules (such as a radio frequency module or an antenna) in the first device, and the information is sent by the first device to the terminal or the access network device.

[0224] In the present application, entity A sending information to entity B can be A directly sending to B, or A indirectly sending to B through other entities. Similarly, entity B receiving information from entity A can be entity B directly receiving information sent by entity A, or entity B indirectly receiving information sent by entity A through other entities. The entities A and B herein can be RAN nodes or terminals, or modules inside RAN nodes or terminals. The sending and receiving of information can be information interaction between RAN nodes and terminals, for example, information interaction between a base station and a terminal; the sending and receiving of information can also be information interaction between two RAN nodes, for example, information interaction between a CU and a DU; the sending and receiving of information can also be information interaction between different modules in one device, for example, information interaction between a terminal chip and other modules in the terminal, or information interaction between a base station chip and other modules in the base station.

[0225] It can be understood that the processor in the embodiments of the present application can be a central processing unit, and can also be other general-purpose processors, digital signal processors, application-specific integrated circuits, field programmable gate arrays or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor can be a microprocessor or any conventional processor.

[0226] The method steps in the embodiments of the present application can be realized by hardware or by the processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, a register, a hard disk, a mobile hard disk, a read-only optical disk or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in a special integrated circuit. In addition, the special integrated circuit can be located in a network device or a terminal device. Of course, the processor and the storage medium can also exist as discrete components in the network device or the terminal device.

[0227] In the above embodiments, all or part of the embodiments can be realized by software, hardware, firmware or any combination thereof. When realized by software, all or part of the embodiments can be realized in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When loaded and executed on a computer, the computer programs or instructions perform all or part of the processes or functions described in the embodiments of the present application. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment or other programmable apparatus. The computer programs or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another, for example, the computer programs or instructions can be transferred from one website, computer, server or data center to another by wired or wireless means. The computer-readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center or the like integrated with one or more available media. The available media can be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; an optical medium, such as a digital video disc; a semiconductor medium, such as a solid-state disk. The computer-readable storage medium can be a volatile or non-volatile storage medium, or can include both volatile and non-volatile storage media.

[0228] In the various embodiments of the present application, the terms and / or descriptions between different embodiments are consistent and can be referred to each other if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0229] In the present application, "at least one" means one or more, and "multiple" means two or more. The association relationship between the associated objects is described by "and / or", which means that there can be three kinds of relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. In the textual description of the present application, the character " / " generally represents that the associated objects before and after it are in an "or" relationship; in the formula of the present application, the character " / " represents that the associated objects before and after it are in a "division" relationship. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0230] It can be understood that various numbers involved in the embodiments of the present application are only distinguished for the convenience of description, and are not used to limit the scope of the embodiments of the present application. The size of the serial number of the above processes does not mean the execution order, and the execution order of the processes should be determined according to their functions and inherent logic.

Claims

1. A communication method characterized by comprising: The method comprises: The terminal receives indication information sent by the access network device, the indication information indicating a first adjustment amount, the first adjustment amount being used to adjust a transmission parameter of a pilot signal sent by the terminal, the transmission parameter comprising one or more of the following: pilot signal phase difference corresponding to different subcarriers, pilot signal phase difference corresponding to different antennas, and amplitude gain of the pilot signal.

2. The method of claim 1, wherein, After the terminal receives the indication information sent by the access network device, the method further comprises: The terminal receives first signaling sent by the access network device, the first signaling being used to enable adjustment of the transmission parameter.

3. The method according to claim 1 or 2, characterized in that, Before the terminal receives the indication information sent by the access network device, the method further comprises: The terminal sends capability information to the access network device, the capability information indicating that the terminal has the capability of adjusting the transmission parameter.

4. The method according to any one of claims 1 to 3, characterized in that, The indication information indicating the first adjustment amount comprises: The indication information indicates an adjustment amount quantization rule and a quantized value of the first adjustment amount, the adjustment amount quantization rule comprising one or more of the following: range of adjustment amount of the transmission parameter or quantization precision of adjustment amount of the transmission parameter.

5. The method according to any one of claims 1 to 4, characterized in that, The indication information further indicates a downlink reference signal; a direction of a transmission beam of the terminal sending the pilot signal is the same as a direction of a reception beam of the terminal receiving the downlink reference signal.

6. A communication method characterized by comprising: The method comprises: The access network device sends indication information to a terminal, the indication information indicating a first adjustment amount, the first adjustment amount being used to adjust a transmission parameter of a pilot signal sent by the terminal, the transmission parameter comprising one or more of the following: pilot signal phase difference corresponding to different subcarriers, pilot signal phase difference corresponding to different antennas, and amplitude gain of the pilot signal.

7. The method of claim 6, wherein, The method further comprises: The access network device sends the indication information to a first device, the first device being used to measure the pilot signal sent by the terminal.

8. The method according to claim 6 or 7, characterized in that, After the access network device sends the indication information to the terminal, the method further comprises: The access network device sends first signaling to the terminal, the first signaling being used to enable adjustment of the transmission parameter.

9. The method according to any one of claims 6 to 8, characterized in that, Before the access network device sends the indication information to the terminal, the method further comprises: The access network device receives capability information sent by the terminal, the capability information indicating that the terminal has the capability of adjusting the transmission parameter.

10. The method according to any one of claims 6 to 9, characterized in that, The indication information indicating the first adjustment amount comprises: The indication information indicates an adjustment amount quantization rule and a quantized value of the first adjustment amount, the adjustment amount quantization rule comprising one or more of the following: range of adjustment amount of the transmission parameter or quantization precision of adjustment amount of the transmission parameter.

11. The method according to any one of claims 6 to 10, characterized in that, The indication information further indicates a downlink reference signal; a direction of a transmission beam of the terminal sending the pilot signal is the same as a direction of a reception beam of the terminal receiving the downlink reference signal.

12. A communication method characterized by comprising: The method comprises: The terminal sends indication information to the access network device, the indication information indicating a first adjustment amount, the first adjustment amount being used to adjust a transmission parameter of a pilot signal transmitted by the terminal, the transmission parameter including one or more of the following: a pilot signal phase difference corresponding to different subcarriers, a pilot signal phase difference corresponding to different antennas, and an amplitude gain of the pilot signal.

13. The method of claim 12, wherein, The method further includes: The terminal sends a first request to the access network device, the first request being used to request adjustment of the transmission parameter; The terminal receives feedback information of the first request sent by the access network device, the feedback information indicating a transmission time-frequency resource of the indication information.

14. The method according to claim 12 or 13, characterized in that, The indication information indicates the first adjustment amount, including: The indication information indicates an adjustment amount quantization rule and a quantized value of the first adjustment amount, the adjustment amount quantization rule including one or more of the following: a range of the adjustment amount of the transmission parameter or a quantization precision of the adjustment amount of the transmission parameter.

15. The method according to any one of claims 12 to 14, characterized in that, The indication information further indicates a downlink reference signal; a direction of a transmission beam of the terminal for transmitting the pilot signal is the same as a direction of a reception beam of the terminal for receiving the downlink reference signal.

16. A method of communication, comprising: The method includes: The access network device receives indication information sent by a terminal, the indication information indicating a first adjustment amount, the first adjustment amount being used to adjust a transmission parameter of a pilot signal transmitted by the terminal, the transmission parameter including one or more of the following: a pilot signal phase difference corresponding to different subcarriers, a pilot signal phase difference corresponding to different antennas, and an amplitude gain of the pilot signal.

17. The method of claim 16, wherein, The method further includes: The access network device sends the indication information to a first device, the first device being used to measure the pilot signal transmitted by the terminal.

18. The method of claim 16 or 17, wherein, The method further includes: The access network device receives a first request sent by the terminal, the first request being used to request adjustment of the transmission parameter; The access network device sends feedback information of the first request to the terminal, the feedback information indicating a transmission time-frequency resource of the indication information.

19. The method of any one of claims 16-18, wherein, The indication information indicates the first adjustment amount, including: The indication information indicates an adjustment amount quantization rule and a quantized value of the first adjustment amount, the adjustment amount quantization rule including one or more of the following: a range of the adjustment amount of the transmission parameter or a quantization precision of the adjustment amount of the transmission parameter.

20. The method of any of claims 16-19, wherein, The indication information further indicates a downlink reference signal; a direction of a transmission beam of the terminal for transmitting the pilot signal is the same as a direction of a reception beam of the terminal for receiving the downlink reference signal.

21. A communication apparatus comprising means for performing the method of any one of claims 1 to 20.

22. A communications device, characterized by comprising a processor and an interface circuit for receiving signals from other communication apparatuses and transmitting signals to the processor or transmitting signals from the processor to other communication apparatuses, the processor being used to implement the method of any one of claims 1 to 20 by means of logic circuitry or executing code instructions.

23. A computer-readable storage medium, characterized in that, The storage medium stores a computer program or instructions which, when executed by a communication device, implement the method of any one of claims 1 to 20.

24. A computer program product comprising computer programs or instructions, characterized in that, The computer program or instructions, when executed by a communication device, implement the method of any one of claims 1 to 20.

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