WO2020061781A1

WO2020061781A1 - Communication method, apparatus and system

Info

Publication number: WO2020061781A1
Application number: PCT/CN2018/107430
Authority: WO
Inventors: 李雪茹; 张瑞齐; 刘鹍鹏; 周永行
Original assignee: 华为技术有限公司
Priority date: 2018-09-25
Filing date: 2018-09-25
Publication date: 2020-04-02
Also published as: CN112740564A; CN112740564B

Abstract

The embodiments of the present application relate to a communication method, apparatus and system. The method comprises: a terminal device acquiring receiving space parameters indicated by first indication information, and measuring a first reference signal sent by a network device to obtain at least one piece of downlink power information, wherein the receiving space parameters comprise antenna parameters of the terminal device, such as an antenna port; and the terminal device sending the at least one piece of downlink power information to the network device. Based on the reporting of the at least one piece of downlink power information and uplink power information measured by a network device, the network device can eliminate the influence of the sending power, at which a terminal device sends an uplink reference signal, on an estimation result of a channel of the terminal device.

Description

Communication method, device and system

Technical field

The embodiments of the present application relate to communication technologies, and in particular, to a communication method, device, and system.

Background technique

A multi-input multi-output (MIMO) system is a system that uses multiple transmitting antennas and multiple receiving antennas to transmit and receive signals. Under the premise that a suitable precoding matrix P is used at the transmitting end and a suitable receiver matrix G is used at the receiving end, the MIMO system can send multiple data streams to one receiving end simultaneously, or multiple Each receiving end sends multiple data streams, thereby significantly improving the spectral efficiency of the system. Among them, the design of the precoding matrix P used by the transmitting end and the receiver matrix G used by the receiving end has an important influence on the system performance. The following data transmission is used as an example. The sender is a network device and the receiver is a terminal device. Network devices need to send data to multiple terminal devices at the same time. Therefore, the precoding matrix P used by network devices should minimize the interference between different data streams, and improve the data reception signal-to-noise ratio of each terminal device. The receiver matrix G needs to suppress the interference of other data streams to its own data stream as much as possible, and further improve its own receive signal-to-noise ratio.

In the prior art, a precoding matrix P of a network device and a receiver matrix G of at least one terminal device are optimized in a joint iterative optimization manner. In a better design of the precoding matrix P, the precoding matrix P needs to obtain the relative gains of the channels of multiple terminal devices being served and the relative gains of the channels of different ports on the same receiving end. However, the current technology cannot enable the transmitting end to obtain the accurate value of the foregoing relative gain, so that the value of the precoding matrix P cannot match the actual channel, and the performance of data transmission is affected. For example, in a time division duplex (TDD) system, the channels of multiple served terminal devices are obtained by the terminal device sending an uplink reference signal. However, the channel information obtained by the uplink reference signal includes the transmission power of the uplink reference signal. Due to the non-ideal factors of the devices of the terminal equipment, the network equipment cannot know the actual uplink reference signal transmission power, and therefore cannot remove the influence of this power from the measurement results. Since the uplink reference signal transmission power of different terminal devices may be different, the relative gains of the channels of different terminal devices cannot be obtained by measuring the uplink channels. Therefore, the precoding matrix P obtained according to the prior art cannot match an actual channel.

Summary of the Invention

A first aspect of the embodiments of the present application provides a communication method, which includes:

The second communication device acquires the first instruction information, the second communication device receives the first reference signal, and the second communication device sends at least one power information of the first reference signal, where the at least one power information is based on the first instruction The receiving space parameter indicated by the information is determined, and the receiving space parameter includes a first antenna parameter of the second communication device.

In this method, the second communication device determines at least one power information of the first reference signal through a reception space parameter indicated by the first indication information. After the first communication device receives the at least one power information, it may determine a precoding matrix based on the at least one power information and uplink power information measured by the first communication device itself. The role of the first indication information is to make the at least one power information reported by the second communication device have an association relationship with the uplink power information measured by the first communication device, so that the first communication device can eliminate the transmission of the uplink reference signal of the second communication device. The effect of power makes the determined precoding matrix match the actual channel.

In a possible design, the acquiring, by the second communication device, the first indication information includes:

The second communication device sends the first instruction information, or the second communication device receives the first instruction information.

The second communication device sends the first instruction information, and notifies the first communication device of the reception space parameter on which the at least one power information is based, so that the first communication device can measure the uplink power information based on the transmission space parameter of the associated second communication device, As a result, the at least one power information reported by the second communication device has an association relationship with the uplink power information measured by the first communication device, so that the first communication device can eliminate the influence of the transmission power of the uplink reference signal of the second communication device, so that The determined precoding matrix matches the actual channel. Optionally, the method is applicable to a case where the second communication device first measures the first reference signal and then sends an uplink reference signal. Optionally, the method may enable the second communication device to select a receiving space parameter corresponding to the power information with the best power information measurement quality (for example, the maximum power value), thereby improving the measurement accuracy of the at least one power information.

Optionally, the receiving of the first instruction information by the second communication device is applicable to a case where the second communication device first sends an uplink reference signal and then measures the first reference signal. The first communication device first measures the uplink reference signal, and selects all or part of the received spatial parameters corresponding to the uplink reference signal according to its own implementation algorithm to measure uplink power information. The first communication device indicates the receiving space parameter corresponding to the uplink power information to the second communication device, so that at least one power information reported by the second communication device has an association relationship with the uplink power information measured by the first communication device, so that the first communication device The communication device can eliminate the influence of the transmission power of the uplink reference signal of the second communication device, so that the determined precoding matrix matches the actual channel. Optionally, this method may enable the first communication device to select the uplink power information with the best power information measurement quality (for example, the maximum power value), and improve the measurement accuracy of the uplink power information.

In one possible design, it also includes:

The second communication device obtains configuration information of a second reference signal, where the second reference signal includes M ports, and different transmission space parameters of different ports among the M ports.

In order for the at least one power information reported by the second communication device to have an association relationship with the uplink power information measured by the first communication device, one way is to combine a reception space parameter for receiving the first reference signal and a transmission space parameter for transmitting the second reference signal. Associated. When the second communication device uses a plurality of different receiving space parameters to receive the first reference signal, the associated plurality of sending space parameters should also not be different.

In one possible design, it also includes:

The second communication device receives first configuration information, and the first configuration information is used to instruct the second communication device to send the at least one power information.

In one possible design, it also includes:

The second communication device sends second instruction information, where the second instruction information is used to indicate a receiver type of the second communication device.

In this method, the second communication device sends the receiver type to the first communication device, so that the first communication device can perform multiple iterations by itself, thereby preventing the second communication device from participating in the iteration, and reducing the computational complexity of the second communication device. , Avoid sending multiple uplink reference signals, thereby greatly increasing the speed of iteration, so that the performance gain of iterative optimization can be achieved.

In one possible design, it also includes:

The second communication device receives second configuration information, where the second configuration information is used to indicate the N.

By configuring N flexibly, the optimal power information calculation scheme can be selected according to the actual situation, so that the acquisition of the relative channel gain is more accurate. For example, the second communication device has 2 transmitting ports and 4 receiving ports, and does not support antenna selection. Then the calculation of the uplink power information by the first communication device can only be based on the uplink reference signals sent by the two sending ports. At this time, when the second communication device calculates the power information of the first reference signal, it should also perform calculation based on the two receiving ports associated with the two transmitting ports. Otherwise, if the channel gains (such as large-scale fading, etc.) corresponding to the other two receiving ports (which cannot send uplink reference signals) are too large, the power of the first reference signal measured based on the four receiving ports There is a large gap between the information and the power information of the first reference signal measured based on the two receiving ports. At this time, if the power information is calculated based on the four receiving ports, it is difficult to accurately eliminate the influence of the uplink reference signal transmission power. In this case, the second configuration information may be configured with N = 2. For the second communication device having the same number of sending ports and receiving ports, N may be configured as the number of all receiving ports, or N may be configured as the number of partial receiving ports.

A second aspect of the embodiments of the present application provides a communication method, which includes:

The first communication device acquires the first instruction information, the first communication device sends a first reference signal, and the first communication device receives at least one power information of the first reference signal, where the at least one power information is based on the first instruction The receiving space parameter indicated by the information is determined, and the receiving space parameter includes a first antenna parameter of the second communication device.

In a possible design, the acquiring, by the first communication device, first indication information includes:

The first communication device sends the first instruction information, or the first communication device receives the first instruction information.

Receiving the first instruction information by the first communication device may cause the first communication device to measure the uplink power information based on the transmission space parameters of the associated second communication device, so that at least one power information reported by the second communication device is related to the first communication device. The measured uplink power information has an association relationship, so that the first communication device can eliminate the influence of the transmission power of the uplink reference signal of the second communication device, so that the determined precoding matrix matches the actual channel. Optionally, the method is applicable to a case where the second communication device first measures the first reference signal and then sends an uplink reference signal. Optionally, the method may enable the second communication device to select a receiving space parameter corresponding to the power information with the best power information measurement quality (for example, the maximum power value), thereby improving the measurement accuracy of the at least one power information.

The first communication device sends the first indication information, which is applicable to a case where the second communication device first sends an uplink reference signal and then measures the first reference signal. The first communication device first measures the uplink reference signal, and selects all or part of the received spatial parameters corresponding to the uplink reference signal according to its own implementation algorithm to measure uplink power information. The first communication device indicates the receiving space parameter corresponding to the uplink power information to the second communication device, so that at least one power information reported by the second communication device has an association relationship with the uplink power information measured by the first communication device, so that the first communication device The communication device can eliminate the influence of the transmission power of the uplink reference signal of the second communication device, so that the determined precoding matrix matches the actual channel. Optionally, this method may enable the first communication device to select the uplink power information with the best power information measurement quality (for example, the maximum power value), and improve the measurement accuracy of the uplink power information.

In one possible design, it also includes:

The first communication device sends configuration information of a second reference signal, where the second reference signal includes M ports, and different ports in the M ports have different transmission space parameters.

In order for the at least one power information reported by the second communication device to have an associated relationship with the uplink power information measured by the first communication device, one way is to combine a reception space parameter for receiving the first reference signal and a transmission space parameter for transmitting the second reference signal Associated. When the second communication device uses a plurality of different receiving space parameters to receive the first reference signal, the associated plurality of sending space parameters should also not be different.

In one possible design, it also includes:

The first communication device sends first configuration information, and the first configuration information is used to instruct the second communication device to send the at least one power information.

In one possible design, it also includes:

The first communication device receives second instruction information, and the second instruction information is used to indicate a receiver type of the second communication device.

In one possible design, it also includes:

The first communication device sends second configuration information, where the second configuration information is used to indicate the N.

From the first aspect to the second aspect, there are other possible designs:

In a possible design, the power information is a parameter determined according to a received power of a signal. The power information may be RSRP, RSRQ, RSSI, or received amplitude information, and may also be determined by at least one of RSRP, RSRQ, RSSI, and received amplitude information.

In a possible design, the first antenna parameter includes antenna port information for the second communication device to measure the power information.

The receiving space parameter includes the first antenna parameter of the second communication device, so that the first indication information can indicate the antenna parameter on which the measurement of the at least one power information is based, such as antenna port information or antenna index information. Since different antenna ports / antennas correspond to different channels, by clearly indicating the information of the antenna ports, the above-mentioned association relationship can be made more accurate, and the obtained precoding matrix can be more accurate.

In a possible design, the receiving spatial parameters further include receiving spatial filtering parameters.

For the same receiving port, different receiving spatial filtering parameters will also affect the channel response corresponding to the receiving port. Therefore, by making the received spatial parameters include the received spatial filtering parameters, the above-mentioned association relationship can be further more accurate, and the obtained precoding matrix can be more accurate.

In a possible design, the receiving spatial filtering parameter may be a spatial Rx parameter.

In a possible design, the first indication information indicates N receiving space parameters;

The at least one power information is determined according to a receiving space parameter indicated by the first instruction information, and includes:

The at least one power information is determined according to the N receiving space parameters.

In a possible design, the transmission space parameter includes a second antenna parameter and / or a transmission space filter parameter, and the second antenna parameter includes antenna port information that the second communication device sends the second reference signal. .

In a possible design, the first indication information indicates N receiving space parameters, which may be information indicating a receiving port of the second communication device, or an associated reference signal.

By indicating the receiving port information of the second communication device, the receiving port on which the measurement of the at least one power information is based can be specified. Then, when the first communication device measures the uplink power information, the transmission port of the second communication device on which it is based should be associated with the reception port. For example, the transmission port is the reception port, and the spatial filtering parameter of the transmission port is equal to the reception port. Spatial filtering parameters. In this way, the first communication device can accurately eliminate the influence of the uplink reference signal power, and make the precoding matrix match the real channel.

By indicating the associated reference signal, the reception space parameter on which the measurement of the at least one power information is based can also be clarified, where the received space parameter based on is associated with the transmission space parameter of the transmission port of the associated reference signal (E.g., equal). Taking the first communication device first measuring the uplink reference signal as an example, the first communication device selects all or part of the transmission space parameters (for example, the sending port) to measure the uplink power information according to its own implementation algorithm. The first communication device indicates the uplink power information to the second communication device, and then the second communication device obtains that the receiving space parameter that needs to be used when measuring the first reference signal should be associated with the indicated sending space parameter (for example, equal). Based on the at least one power information calculated and reported in this way and the uplink power information measured by the first communication device, the first communication device can be made to eliminate the influence of the transmission power of the uplink reference signal, thereby making the determined precoding matrix and the actual Channel matching.

In a possible design, the reference signal associated with the indication may be configuration information indicating at least one second reference signal resource, or may be configuration information indicating at least one second reference signal resource set.

Optionally, the configuration index of at least one second reference signal resource may be indicated, or the configuration index of at least one second reference signal resource set may be indicated. With fewer bits, the required information can be indicated. The second reference signal is an uplink reference signal sent by the second communication device.

In a possible design, if the first indication information indicates an associated reference signal, the first indication information indicates N receiving space parameters, including:

The first indication information indicates configuration information of the second reference signal, and the N reception space parameters are associated with the transmission space parameters of the M ports;

or,

The first indication information is used to indicate M1 ports among the M ports, and the N reception space parameters are associated with the transmission space parameters of the M1 ports, 1 <= M1 <= M.

By indicating the configuration information of the second reference signal, or the M1 port of the M ports, the first information can accurately indicate which of the receiving space parameters the at least one power information is measured on, so that the first communication device acquires the measurement The second reference signal power information needs to be based on a transmission space parameter, or the second communication device is required to obtain a reception space parameter based on which to measure at least one power information. For example, the first communication device measures the second reference signal of M> 1 transmission ports, determines that the channel quality of M1 ports is the best, and measures uplink power information based on the M1 ports. Then the channel quality corresponding to the reception space parameters associated with the transmission space parameters of the M1 ports may also be the best. It is more accurate to measure at least one power information based on these reception space parameters. Then, the first communication device may instruct the second communication device to obtain a more accurate based on the reception space parameters associated with the transmission space parameters of the M1 ports when measuring the power information of the first reference signal through the first instruction information. Measurement results.

In a possible design, the N receiving spatial parameters are associated with the transmitting spatial parameters of the M ports, and include:

The N reception space parameters are determined based on the transmission space parameters of all or part of the M ports, or the transmission space parameters of all or part of the M ports are determined based on the N reception space parameters. of.

In a possible design, the N receiving space parameters are associated with the sending space parameters of the M1 ports, including:

The N reception space parameters are determined based on the transmission space parameters of the M1 ports, or the transmission space parameters of the M1 ports are determined based on the N reception space parameters.

Optionally, the N receiving space parameters are determined based on the sending space parameters of all or part of the M ports, and the N receiving space parameters are equal to the sending space parameters of all or part of the M ports. ; The sending space parameters of all or part of the M ports are determined based on the N receiving space parameters, and the sending space parameters of all or part of the M ports are equal to the N receiving space parameters. Other similar reasons will not be repeated.

By associating N receiving spatial parameters with transmitting spatial parameters of M ports, the first communication device can determine a precoding matrix based on the uplink power information measured by itself and at least one power information reported by the second communication device, thereby eliminating Influence of the transmission power of the uplink reference signal of the second communication device, so that the determined precoding matrix matches the actual channel.

In a possible design, the at least one power information is determined according to the N receiving space parameters, including:

The at least one power information is determined according to a maximum value of the power information of the first reference signal corresponding to the N received spatial parameters.

The determination of at least one power information by the maximum value of the power information of the first reference signal may enable the second communication device to select the power information with the best measurement quality of the power information (for example, the maximum power value is reported) and improve the measurement of the at least one power information The accuracy helps to accurately eliminate the influence of the transmission power of the uplink reference signal of the second communication device, and makes the precoding matrix more accurate.

The at least one power information is determined according to an average value of power information of the first reference signal corresponding to the N received spatial parameters.

At least one power information is determined by an average value of the power information of the first reference signal, which can reduce the influence of interference and noise on the measurement accuracy and improve the measurement accuracy of the power information.

The at least one power information includes K power information, wherein the i-th power information is determined according to the i-th reception space parameter among the K reception space parameters, and the N reception space parameters include the K power Information, 1 <= i <= K.

By including K pieces of power information in at least one piece of power information, a problem caused by inaccurate amplitude calibration of multiple transmission space parameters of the second communication device can be solved.

The at least one power information is determined according to a sum value of power information of the first reference signal corresponding to the N received spatial parameters.

In a possible design, the power information of the first reference signal is a weighted summation of power information on time-frequency resources occupied by the first reference signal in L time units, and L is a positive integer.

In a possible design, the first indication information is carried by at least one of RRC, MAC, CE, or DCI signaling.

In a possible design, the first configuration information includes the first indication information.

In a possible design, the first reference signal is CSI-RS or SSB, and the second reference signal is SRS.

A third aspect of the embodiments of the present application provides a communication device. The communication device may be a second communication device, or may be capable of supporting the second communication device to perform a corresponding function performed by the second communication device in the design example of the first aspect. A device, for example, the device may be a device or a chip system in a second communication device, and the device may include a receiving module, a processing module, and a sending module, and these modules may execute the second communication device in the design example of the first aspect. The corresponding function, specifically:

A processing module, configured to obtain the first instruction information.

The receiving module is configured to receive a first reference signal.

A sending module, configured to send at least one power information of the first reference signal, the at least one power information is determined according to a receiving space parameter indicated by the first instruction information, and the receiving space parameter includes the second The first antenna parameter of the communication device.

In a possible design, for an indication method of the first indication information, refer to the specific description in the first aspect, which is not specifically limited herein.

A fourth aspect of the embodiments of the present application provides a communication device. The communication device may be a first communication device, or may be capable of supporting the first communication device to perform a corresponding function performed by the first communication device in the design example of the second aspect. The device, for example, the device may be a device or a chip system in a first communication device, and the device may include a sending module, a processing module, and a receiving module, and these modules may execute the first communication device in the design example of the second aspect. The corresponding function, specifically:

A processing module, configured to obtain the first instruction information.

A sending module, configured to send a first reference signal.

A receiving module, configured to receive at least one power information of the first reference signal, where the at least one power information is determined according to a receiving space parameter indicated by the first instruction information, where the receiving space parameter includes the second The first antenna parameter of the communication device.

In a possible design, for an indication method of the first indication information, refer to the specific description in the second aspect, which is not specifically limited herein.

A fifth aspect of the embodiments of the present application provides a communication device, where the communication device includes a processor, and is configured to implement a function of the second communication device in the method described in the first aspect. The communication device may further include a memory for storing program instructions and data. The memory is coupled to the processor, and the processor may call and execute program instructions stored in the memory to implement the function of the second communication device in the method described in the first aspect. The second communication device may further include a communication interface, where the communication interface is used for the second communication device to communicate with other devices. Exemplarily, the other device is a first communication device.

In a possible design, the second communication device includes:

Communication Interface;

Memory for storing program instructions;

A processor, configured to obtain first indication information, receive a first reference signal, and send at least one power information of the first reference signal, where the at least one power information is a receiving space indicated according to the first indication information The parameter is determined, and the receiving space parameter includes a first antenna parameter of the second communication device.

A sixth aspect of the embodiments of the present application provides a communication device, where the communication device includes a processor, and is configured to implement a function of the first communication device in the method described in the second aspect. The communication device may further include a memory for storing program instructions and data. The memory is coupled to the processor, and the processor may call and execute program instructions stored in the memory to implement functions of the first communication device in the method described in the second aspect. The first communication device may further include a communication interface, where the communication interface is used for the first communication device to communicate with other devices. Exemplarily, the other device is a second communication device.

In a possible design, the first communication device includes:

Communication Interface;

Memory for storing program instructions;

A processor, configured to obtain first indication information, send a first reference signal, and receive at least one power information of the first reference signal, where the at least one power information is a receiving space indicated according to the first indication information The parameter is determined, and the receiving space parameter includes a first antenna parameter of the second communication device.

A seventh aspect of the embodiments of the present application provides a chip system. The chip system includes a processor, may further include a memory, and may further include a communication interface, which is configured to implement a function of the first communication device or the second communication device in the foregoing method. The chip system can be composed of chips, and can also include chips and other discrete devices.

An eighth aspect of the embodiments of the present application provides a computer program product, where the computer program product includes computer program code, and when the computer program code is executed by a computer, causes the computer to execute the method according to the first aspect, or The computer is caused to perform the method described in the second aspect.

A ninth aspect of the embodiments of the present application provides a computer-readable storage medium, where the computer storage medium stores computer instructions, and when the computer instructions are executed by a computer, the computer is caused to execute the foregoing first aspect or the second aspect. The method described.

A tenth aspect of the embodiments of the present application provides a system including the communication device according to the third aspect and the communication device according to the fourth aspect; or the system includes the communication device according to the fifth aspect and a sixth device. Aspect of the communication device.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 shows an example process performed by a joint iterative optimization method in a TDD system;

2 is an exemplary system architecture diagram of a communication method according to an embodiment of the present application;

FIG. 3 is a schematic flowchart of interaction of a communication method according to an embodiment of the present application; FIG.

4 is a module structural diagram of a communication device according to an embodiment of the present application;

5 is a module structural diagram of another communication device according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a device 600 according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a device 700 according to an embodiment of the present application.

detailed description

In the present application, "at least one" means one or more, and "multiple" means two or more. "And / or" describes the association relationship between related objects, and indicates that there can be three kinds of relationships. For example, A and / or B can indicate: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the related objects are an "or" relationship. "At least one or more of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one (a) of a, b, or c can be expressed as: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .

In a MIMO system, the design of the precoding matrix P used by the transmitting end and the receiver matrix G used by the receiving end has an important impact on system performance. The optimization of the precoding matrix P is an important issue in a MIMO system.

In a possible design, P and G can be optimized by a joint iterative optimization, that is, fixed P optimizes G, and fixed G optimizes P, and the above process is repeated several times. Figure 1 shows an example process performed by the method in a TDD system. As shown in Figure 1, assuming that the number of transmitting antennas and receiving antennas of each terminal device are the same, the process of joint and iterative optimization of P and G is:

S101. The network device obtains a downlink channel matrix _{Hk of the kth} terminal device by measuring sounding reference signals (SRS) of the K terminal devices.

Among them, H _k is a matrix of N _rk rows and N _t columns, N _rk represents the number of antenna ports (also the number of antenna ports that receive downlink signals) of the k-th terminal device that sends SRS, and N _t represents the antenna port of the network device number. Based on the information of the channel matrix _Hk of the K terminal devices, the network device can determine the initial precoding matrix P = [P ₁ … .P _K ] according to a specific algorithm or principle

P _k represents the initial precoding matrix determined by the network device for the k-th terminal device, and L represents the total number of data layers scheduled by the network device, satisfying

l _k represents the number of data layers scheduled by the network device for the k-th terminal device. In an alternative manner, P can be obtained using the design principle of Zero Forcing (ZF).

S102. The network device uses _Pk as a precoding matrix, and sends a precoded channel state information reference signal (CSI-RS) to the k-th terminal device.

S103. The k-th terminal device measures the equivalent channel H _k * P _k to determine the initial receiver matrix.

S104. The k-th terminal device uses G _k to pre-encode the SRS, and sends the pre-encoded SRS, so that the network device obtains the equivalent channel G _k * H _k . Then, the network device determines this based on the equivalent channels of the K terminal devices. The precoding matrix P = [P ₁ … .P _K ].

Since the precoding matrix obtained according to the ZF principle is not the optimal precoding matrix, network devices can obtain the precoding matrix based on the Minimum Mean Square Error (MMSE) principle to further improve the sum rate of the system.

For example, a network device can determine the precoding matrix based on the MMSE principle by the following formula (1):

among them,

For dimension is

A matrix of rows N _t columns, () ^H represents the conjugate transpose of the matrix,

It indicates the transmission power of the network device when it performs data scheduling in the future. G = diag {G ₁ , ..., G _K } is a block diagonal matrix composed of G ₁ , ..., G _K with dimensions of L rows

Column. W is a matrix of L rows and L columns. For example, W can be determined according to the priority of each terminal device. α and β are real numbers, and I _m is a unit matrix with dimensions m * m.

S105, the network device obtained according to step S104, P is a pre-coding matrix P _k, the k-th terminal device transmits the precoded CSI-RS.

S106. The k-th terminal device measures the equivalent channel H _k * P _k to determine the receiver matrix G _k at this time.

The above steps S104-S106 are an iterative process. Based on this, steps S104-S106 can be performed iteratively several times. During the iteration, the precoding matrix P of the network equipment and the receiver matrix G _{k of} each terminal equipment are continuously updated. When the iteration converges, the obtained P and G _k can match each other better, improving system performance.

When the above method is used to optimize the precoding matrix, when determining the precoding matrix P, the network device needs to determine the channel matrix H _k (or G _k H _k ) of each terminal device.

In a TDD system, H _k is determined based on the SRS measurement channel sent by each terminal device. The measurement result includes the effect of the SRS transmit power, that is, the measurement result is

(or

). among them,

It is the transmission power of the SRS of the terminal device k. Due to non-ideal factors such as devices, network equipment cannot know the actual SRS transmit power, and therefore cannot be removed from the measurement

The impact of

(or

). That is, the network device cannot obtain the relative relationship between the channel gains of different terminal devices. Therefore, the MMSE precoding matrix obtained by the network device based on the above formula (1) cannot match the actual channel, which seriously reduces the performance of the system.

In the FDD system, H _k or related information (such as the feature vector or correlation matrix of H _k ) is reported by each terminal device to the network device. In order to reduce the feedback overhead, the terminal equipment will normalize _Hk or related information, so the network equipment cannot obtain the relative channel gain of different terminal equipment. Therefore, the MMSE precoding matrix obtained by the network device based on the above formula (1) cannot match the actual channel, which seriously reduces system performance.

The methods provided in the embodiments of the present application are aimed at solving the foregoing problems.

In order to enable those skilled in the art to better understand the technical solutions of the present application, the technical terms involved in the present application are first explained below.

1.Power information

The power information described in the embodiment of the present application is a parameter determined according to a received power of a signal. For example, the power information of the reference signal may be an average value of the received power of the reference signal on the occupied time-frequency resources, or a parameter determined according to the received power of the reference signal and other information. In the current 3GPP standard, Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), and Received Signal Strength Indicator (RSSI) can be used as this application. Definition of power information in the embodiment. Alternatively, the power information of the signal may also be defined as the received amplitude information of the signal, or may be determined according to one or more of them, which is not specifically limited in the embodiment of the present application. Since the power can be determined based on the amplitude and vice versa, the two can be considered equivalent.

Among them, RSRP is the average value of the power of the reference signal received on all time-frequency resources carrying the reference signal, and RSSI is the average of the power of all signals (including pilot signals, interference signals, noise signals, etc.) carried in a certain symbol. Value, RSRQ is determined based on RSRP and RSSI.

2. Antenna port information

The antenna port information described in the embodiment of the present application may be the number of antennas, the number of antenna ports, the index of the antenna, the index of the antenna port, or the index of the antenna port group. limit.

An antenna port group is composed of at least one antenna port. One definition method is that one antenna port group corresponds to all antennas or all antenna ports on one antenna panel of a terminal device. One way to define it is that an antenna port group consists of antennas or antenna ports that the terminal device can send signals (such as SRS) at the same time. Another definition is that an antenna port group is composed of antennas or antenna ports that a terminal device can send signals (such as SRS). Another way to define it is that an antenna port group consists of antennas or antenna ports that the terminal device can receive signals at the same time. The antenna port group may also have other definition manners, which are not limited in the embodiment of the present application. An antenna port may correspond to one physical antenna, or may be formed by weighting multiple physical antennas, or may have other forms. This embodiment of the present application does not specifically limit this.

3.Receiving spatial filtering parameters

The receiving spatial filtering parameter refers to a weighting parameter used by the terminal device to form a beam when receiving beamforming. The weighting parameter is often related to the related information of the DOA of the downlink channel on the terminal device side. The terminal device can virtualize multiple physical antennas into one receiving antenna port through multiple antennas and corresponding weighting parameters. Matching the receive spatial filtering parameters of the channel can improve the receive power of the downlink signal.

4, send spatial filtering parameters

The transmission spatial filtering parameter refers to a weighting parameter used by the terminal device to form a beam when transmitting beamforming. The weighting parameter is often related to the related information of the wave departure angle of the uplink channel on the terminal device side. The terminal device can virtualize multiple physical antennas into one transmit antenna port through multiple antennas and corresponding weighting parameters. Matching the transmission space filtering parameters of the channel can improve the power of network equipment to receive uplink signals.

In some cases (such as TDD systems), it is possible to determine the sending spatial filtering parameters by receiving the spatial filtering parameters, and vice versa. In the case where the channel has reciprocity, the optimal receiving spatial filtering parameter and the optimal transmitting spatial filtering parameter are the same. Therefore, one of the parameters can be determined to determine the other parameter.

FIG. 2 is an exemplary system architecture diagram of a communication method according to an embodiment of the present application. As shown in FIG. 2, the method involves communication between a terminal device and a network device.

In the embodiments of the present application, the terminal device may be a device that provides voice and / or data connectivity to the user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. A terminal device can communicate with one or more core networks via a radio access network (RAN). The terminal device can be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a mobile terminal device. The computer, for example, may be a portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants, PDA), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in future 5G networks, or public land mobile networks that have evolved in the future (public land mobile network) , PLMN), etc., this embodiment of the present application is not limited to this. The terminal device can also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, Remote terminal equipment (remote terminal), access terminal equipment (access terminal), user terminal equipment (user terminal), user agent (user agent), user equipment (user device), or user equipment (user equipment).

In the embodiment of the present application, the network device may be a base station. A base station may be a device that is deployed in a wireless access network and is capable of wireless communication with a terminal device. The base station can be used to convert the received air frames and IP packets to each other as a router between the terminal device and the rest of the access network, where the rest of the access network can include an Internet Protocol (IP) network; the base station can also Coordinate the management of air interface attributes. For example, the base station can be a Global System for Mobile Communication (GSM) or a code division multiple access (CDMA) base station (Base Transceiver Station (BTS)), or it can be a Broadband Code Division Multiple Access The base station (NodeB) in (wideband code multiple access, WCDMA) may also be an evolved base station (eNB or e-NodeB, evolutional NodeB) in LTE, or gNB in NR, etc. The base station can also be a wireless controller in a cloud radio access network (CRAN) scenario, or it can be a relay station, access point, in-vehicle device, wearable device, and network device in a 5G network or future evolution The network devices and the like in the PLMN network are not limited in the embodiments of the present application.

In addition, the base station may be a macro base station or a micro base station.

The method involved in this application is applicable to scenarios of homogeneous networks and heterogeneous networks. At the same time, there are no restrictions on transmission points. For example, it can support multi-point coordinated transmission between macro base stations and macro base stations, micro base stations and micro base stations, and macro base stations and micro base stations. In addition, the method involved in this application can be used in a frequency division duplex (FDD) system, and can also be used in a TDD system. At the same time, the method involved in this application is also applicable to low-frequency scenes (below 6GHz) and high-frequency scenes (above 6GHz).

It should be noted that the first communication device described in the following embodiments of the present application may be the network device illustrated in FIG. 2 described above, and the second communication device described in the following embodiments may be terminal devices illustrated in FIG. 2 described above. However, the embodiments of the present application are not limited thereto.

FIG. 3 is a schematic diagram of an interaction process of a communication method according to an embodiment of the present application. As shown in FIG. 3, the interaction process involved in the method is:

S301. The first communication device sends a first reference signal to the second communication device.

Taking the first communication device as a network device and the second communication device as a terminal device as an example, the network device may send a first reference signal to the terminal device for the terminal device to measure the power information of the first reference signal.

In an optional manner, the first reference signal may be a CSI-RS.

In another optional manner, the first reference signal may be a synchronization signal (SS) or a synchronization signal block (SS).

In another optional manner, the first reference signal may be a demodulation reference signal (DMRS).

S302. The second communication device determines at least one power information of the first reference signal according to a receiving space parameter indicated by the first instruction information.

For the specific meaning of the above power information, refer to the foregoing term explanation section, which is not repeated here.

Optionally, the receiving space parameter includes a first antenna parameter of the second communication device.

Optionally, the first antenna parameter includes antenna port information for the second communication device to measure the power information. For specific meanings of the antenna port information, refer to the foregoing term explanation section, and details are not described herein again.

Exemplarily, the first antenna parameter may include an antenna port index or an antenna index of the second communication device for measuring the power information.

Optionally, the above-mentioned receiving spatial parameters further include receiving spatial filtering parameters.

For the specific meaning of the receiving spatial filtering parameter, refer to the foregoing term explanation section, which will not be repeated here. Exemplarily, the above-mentioned receiving spatial filtering parameters may be called spatial Rx paramters, and the spatial Rx paramters include weighting parameters of the antenna.

Wherein, in the uplink direction, the second communication device may send a second reference signal to the first communication device for the first communication device to measure the power of the uplink reference signal. Optionally, the second reference signal may be SRS or DMRS. For ease of description, in the following embodiments of the present application, the first reference signal is a CSI-RS and the second reference signal is an SRS for example, but the embodiments of the present application are not limited thereto.

As an example, the spatial information of the antenna port of the second communication device transmitting the SRS and the spatial parameter of the antenna port receiving the CSI-RS may be made by using the indication information.

The specific process of indicating the receiving spatial parameters by using the first instruction information will be described in detail in the following embodiments.

S303. The second communication device sends at least one power information of the first reference signal to the first communication device.

S304. The first communication device determines a precoding matrix based on at least one power information of the first reference signal.

The process of determining the precoding matrix by the first communication device is described below by using an example.

Exemplarily, assuming that the second communication device includes multiple antenna ports, and the multiple antenna ports are used for both transmitting and receiving signals, then:

In the uplink direction, the second communication device sends the SRS through one of the antenna ports A. Accordingly, the first communication device can receive the SRS using one antenna port B, and the first communication device uses the fth time-frequency resource occupied by the SRS. The measured received signal is:

Among them, E _srs is the power of the second communication device to send SRS, h _f is the uplink channel coefficient of the second communication device's sending port A to the first communication device's receiving port B, which is a complex number, and s is the SRS symbol. The device and the second communication device have known the value of the parameter in advance, and n is interference and / or noise.

Further, the first communication device performs channel estimation to obtain an uplink channel estimation result on the f-th time-frequency resource.

Furthermore, the first communication device calculates the uplink power information X _UL corresponding to the antenna port A of the second communication device by the following formula (3):

Among them, F is the total number of time-frequency resources occupied by the SRS.

Represents the average of | x | ² .

In the downlink direction, the first communication device transmits a CSI-RS through the above-mentioned port B. The second communication device receives the CSI-RS through a plurality of receiving ports. Wherein, on the receiving port C, the second communication device obtains the received signal on the f-th time-frequency resource occupied by the CSI-RS:

Among them, E _csi-rs is the power of the CSI-RS transmitted by the first communication device, h _f is the downlink channel coefficient of the transmission port B of the first communication device to the reception port C of the second communication device, and x is the CSI-RS symbol, The first communication device and the second communication device already know the value of the parameter in advance, and n ′ is interference and / or noise.

Further, the second communication device performs channel estimation to obtain a downlink channel estimation result on the f-th time-frequency resource.

Furthermore, the second communication device calculates the downlink power information X _DL corresponding to the antenna port A of the first communication device by the following formula (5):

Among them, F 'is the total number of REs occupied by the CSI-RS. Ideally,

The second communication device sends the X _DL to the first communication device, and the first communication device can obtain:

If

Then the first communication device can obtain the ratio of E _tx to E _srs by formula (7):

X _DL / X _UL = E _csi - _rs / E _srs (7)

If the power E _{tx of the} data transmitted by the first communication device is equal to the power E _{csi-rs of the} CSI-RS, or has a known ratio relationship, E _tx / E _srs can be calculated according to (7).

Furthermore, the ratio calculated by the first communication device according to the above formula (7) and the estimated value

The following formula (8) is used to obtain the

Wherein, H is a channel matrix of the second communication device.

It can be seen from the above formula (8) that after the processing of the above formula (8), the influence of the SRS transmission power is eliminated. Therefore, when the first communication device transmits data for the K second communication devices at the same time, E _tx / E _{srs, k of} the k-th second communication device can be obtained by the method described above, and then obtain

Therefore, the relative channel gain of each second communication device is accurately obtained, and the accuracy of the precoding matrix calculated by the first communication device through the above formula (1) can be guaranteed.

The key to get formula (7) is to satisfy

or

A prerequisite for satisfying this equation or inequality is that the transmitting port A and the receiving port C of the second communication device are mutually associated ports, for example, corresponding to the same physical antenna. If port A and port C are virtualized by multiple physical antennas, the reception filtering parameters of port A and the transmission filtering parameters of port C are also the same. Because the channels of different ports are different, it is difficult to guarantee without the constraints associated with port A and port C

It is not possible to obtain accurate E _tx / E _srs .

Therefore, the first communication device needs to ensure that the transmission port of the second communication device corresponding to the X _UL calculated by itself and the reception port corresponding to the X _DL fed back by the second communication device are associated. Therefore, the receiving port corresponding to the feedback X _DL needs to be indicated by the first instruction information to ensure the above constraint.

In this embodiment, the second communication device determines at least one power information of the first reference signal by using a receiving space parameter indicated by the first instruction information. After the first communication device receives the at least one power information, it may determine a precoding matrix based on the at least one power information and uplink power information measured by the first communication device itself. The role of the first indication information is to make the at least one power information reported by the second communication device have an association relationship with the uplink power information measured by the first communication device, so that the first communication device can eliminate the transmission of the uplink reference signal of the second communication device. The effect of power makes the determined precoding matrix match the actual channel.

As an optional manner, the first communication device may first obtain the first instruction information, and the second communication device may also first obtain the first instruction information.

It should be noted that, in the embodiment of the present application, the sequence of obtaining the first instruction information and sending the first reference signal by the first communication device is not specifically limited, and the first communication device may obtain the first instruction information before sending The first reference signal may also be sent first, and then the first indication information is obtained.

In addition, in the embodiment of the present application, the order in which the second communication device obtains the first indication information and receives the first reference signal is not specifically limited, and the second communication device may obtain the first indication information before receiving the first reference. Signal, it may also receive the first reference signal first, and then obtain the first indication information.

The manner in which the first communication device and the second communication device obtain the first instruction information may be any one of the following.

In the first mode, the first communication device sends the first instruction information to the second communication device, and the second communication device receives the first instruction information.

In this manner, the first communication device first determines the first instruction information, that is, obtains the first instruction information, and further, the first communication device sends the first instruction information to the second communication device.

Exemplarily, the first communication device determines the first antenna parameter, obtains first instruction information for indicating the first antenna parameter, and sends the first instruction information to the second communication device. After receiving the first instruction information, the second communication device can obtain the first antenna parameter.

The receiving of the first instruction information by the second communication device is applicable to a case where the second communication device first sends an uplink reference signal and then measures the first reference signal. The first communication device first measures the uplink reference signal, and selects all or part of the received spatial parameters corresponding to the uplink reference signal according to its own implementation algorithm to measure uplink power information. The first communication device indicates the receiving space parameter corresponding to the uplink power information to the second communication device, so that at least one power information reported by the second communication device has an association relationship with the uplink power information measured by the first communication device, so that the first communication device The communication device can eliminate the influence of the transmission power of the uplink reference signal of the second communication device, so that the determined precoding matrix matches the actual channel. Optionally, this method may enable the first communication device to select the uplink power information with the best power information measurement quality (for example, the maximum power value), and improve the measurement accuracy of the uplink power information.

In the second method, the second communication device sends the first instruction information to the first communication device, and the second communication device receives the first instruction information.

In this manner, the second communication device first determines the first instruction information, that is, obtains the first instruction information, and further, the second communication device sends the first instruction information to the first communication device.

Exemplarily, the second communication device determines the first antenna parameter, obtains the first instruction information used to indicate the first antenna parameter, and sends the first instruction information to the first communication device. After receiving the first instruction information, the first communication device may obtain the first antenna parameter.

The following describes the process of instructing the receiving space parameter by using the first instruction information.

Optionally, the first indication information may indicate N receiving space parameters, where N is an integer greater than zero. Optionally, the N may be a fixed value or a pre-configured value. Exemplarily, the first communication device may send the second configuration information to the second communication device, where the second configuration information is used to indicate the aforementioned N.

Exemplarily, the above-mentioned second configuration information may be through radio resource control (RRC) signaling, media access control (MAC, CE) signaling, or downlink control information (DCI). At least one of the signaling is carried.

Correspondingly, the at least one power information is determined according to the N receiving space parameters.

As an optional implementation manner, the manner in which the first indication information indicates N receiving space parameters may be receiving port information (such as a receiving port index or a receiving port number) of the second communication device, where different receiving The receiving space parameters of the ports are different.

As another optional implementation manner, the manner in which the first indication information indicates N receiving spatial parameters may be configuration information indicating an associated second reference signal, where a port on which the second communication device sends the second reference signal The transmission space parameters are associated with the N reception space parameters.

Optionally, the configuration information of the second reference signal may include: the number of ports of the second reference signal, time-frequency resources occupied by the second reference signal, and the like. Optionally, the transmission space parameters of different ports are different. Optionally, the transmission space parameter may include a second antenna parameter and / or a transmission space filtering parameter. Optionally, the second antenna parameter includes antenna port information that the second communication device sends the second reference signal.

Exemplarily, the configuration information of the second reference signal may configure an antenna port index for the second communication device to send the second reference signal.

Optionally, before the second communication device sends the second reference signal to the first communication device, the second communication device may first obtain configuration information of the second reference signal. Optionally, the configuration information of the second reference signal may be indicated by the first communication device to the second communication device.

Optionally, the first indication information indicating the associated second reference signal may be configuration information indicating at least one second reference signal resource, and then all of the N received spatial parameters and the at least one second reference signal resource The transmission space parameters of the M ports among the ports are associated; or, the foregoing first indication information indicates that the associated second reference signal is configuration information indicating at least one second reference signal resource set, where each resource set includes One or more resources, the N received spatial parameters are associated with the transmitted spatial parameters of M ports among all the ports of the second reference signal resource included in the at least one second reference signal resource set. That is, the M ports may be one port of a second reference signal resource, or may be a port of a different second reference signal resource.

Furthermore, when the N receiving space parameters are indicated by the first instruction information, the receiving space parameters may be implemented in any of the following two ways:

In one mode, the first indication information may indicate configuration information of the second reference signal, for example, a configuration index is indicated, and the N received spatial parameters are associated with the transmitted spatial parameters of the M ports.

The association of the N receiving space parameters with the sending space parameters of the M ports may mean that the N receiving space parameters are determined by sending space parameters of all or part of the M ports, or that all or The sending space parameters of some ports are determined by N receiving space parameters.

For example, the N receiving space parameters are determined based on the sending space parameters of M1 ports among the M ports, where M1 is less than or equal to M. For another example, the transmission space parameters of the M1 ports among the M ports are determined based on the N reception space parameters.

In this method, the configuration information of the second reference signal is indicated by the first indication information, that is, the transmission space parameters in the M ports can be indicated, and then the association relationship between the transmission space parameters of the M ports and the N reception space parameters can be indicated. Get N receiving space parameters.

Exemplarily, assuming that the second communication device has two transmitting antenna ports and two receiving antenna ports, the at least one power information is defined as an average value of the first reference signal power measured by all the receiving ports indicated. In this scenario, the second communication device first sends an SRS resource through M = 2 ports, and saves the transmission space parameters of these M = 2 ports; second, the first communication device sends the CSI-RS, and passes the first The indication information indicates configuration information (such as a resource configuration index) of the SRS resource. The second communication device reads the saved transmission space parameters of M = 2 ports through the configuration information of the SRS resource indicated by the first instruction information, and determines N = 2 reception space parameters required for receiving the CSI-RS according to the transmission space parameters. . That is, the second communication device determines N reception space parameters according to the transmission space parameters of the M ports.

Furthermore, the second communication device may measure the power information of the first reference signal according to the N received spatial parameters. For example, if the N receiving space parameters include N port indexes, the second communication device may perform measurement on the ports corresponding to the N port indexes or a part of the N indexes. If the N receiving space parameters include the number of ports with a value of N, the second communication device may determine the power of the first reference signal from the corresponding number of ports from the ports sending the second reference signal according to a predefined rule. measuring.

In another manner, the manner in which the first indication information indicates N receiving space parameters may be indicating M1 ports among M ports of the associated second reference signal, and the N receiving space parameters and the M1 ports The transmission space parameters of X are associated, where M1 is an integer greater than or equal to 1 and less than or equal to M.

Indicating the associated second reference signal may be implemented by indicating at least one second reference signal resource, or may be implemented by indicating at least one second reference signal resource set, and details are not described again. The above-mentioned N receiving space parameters are associated with the sending space parameters of the M1 ports, which may mean that the N receiving space parameters are determined by the sending space parameters of the M1 ports, or the sending space parameters of the M1 ports are received by the N receptions. Space parameters to determine.

For example, the N receiving space parameters are determined based on the sending space parameters of the M1 ports.

For another example, the sending space parameters of the M1 ports are determined based on the N receiving space parameters.

In this method, M1 ports of the M ports are indicated by the first instruction information, that is, the sending space parameters of each port in the M1 ports can be indicated, and then the receiving space parameters of the M1 ports and the N receiving spaces can be indicated. The association relationship of the parameters obtains N receiving space parameters.

Exemplarily, it is assumed that the second communication device has two transmitting antenna ports and two receiving antenna ports, and the second communication device sends one SRS resource through M = 2 ports. The definition of the at least one power information is at least one receiving port. The maximum value of the first reference signal power information measured by each receiving port. Then, first, the first communication device sends a CSI-RS, and the second communication device measures the first reference signal power information corresponding to each receiving port through two ports, and reports the maximum reference signal power information. At the same time, the second communication device reports the first indication information, which is used to indicate the receiving port index corresponding to the reported power information, that is, N = 1. Secondly, the second communication device transmits the SRS through M = 2 ports, and the transmission space parameter used is the same as the reception space parameter for receiving the first reference signal. The first communication device can determine, through the receiving port index indicated by the first instruction information and a predetermined corresponding rule, which port should be used to measure the uplink power information among the two ports sending the SRS.

In the above embodiments, the relationship between the N and the M may be any one of the following, and this application does not specifically limit this.

In addition, the order in which the second communication device receives the first reference signal and sends the second reference signal is not specifically limited.

The order in which the first communication device sends the first reference signal and receives the second reference signal is not specifically limited.

1.N = M

In an exemplary scenario, the second communication device has two transmitting antenna ports and two receiving antenna ports, and the at least one power information is defined as an average value of the power of the first reference signal measured by all the receiving ports indicated. Then, the second communication device first sends an SRS resource through M = 2 ports, and saves the transmission space parameters of these M = 2 ports; second, the first communication device sends the CSI-RS, and indicates through the first instruction information Configuration information (such as a resource index) of the SRS resource. The second communication device reads the saved transmission space parameters of M = 2 ports through the configuration information of the SRS resource indicated by the first instruction information, and determines N = 2 reception space parameters required for receiving the CSI-RS according to the transmission space parameters. . At this time, N = M. Optionally, the i-th sending space parameter is equal to the i-th receiving space parameter, i = 1,2.

In another exemplary scenario, the second communication device has one transmitting antenna port and two receiving antenna ports, and does not support SRS antenna switching. Then the second communication device fixedly uses M = 1 port to send the SRS (the SRS is a 1-port SRS). At this time, the power information measured by the second communication device should also be measured based on the port. At this time, the first indication information indicates the index of the SRS resource, so N = 1, that is, N = M.

2.N <M

In an exemplary scenario, the second communication device has two transmitting antenna ports and two receiving antenna ports. The second communication device sends one SRS resource through M = 2 ports. The definition of the at least one power information is at least one. The maximum value of the first reference signal power information measured by each receiving port in the receiving port. Then, first, the first communication device sends a CSI-RS, and the second communication device measures the first reference signal power information corresponding to each receiving port through two ports, and reports the maximum reference signal power information. At the same time, the second communication device reports the first indication information, which is used to indicate the receiving port index corresponding to the reported power information, that is, N = 1. Secondly, the second communication device transmits the SRS through M = 2 ports, and the transmission space parameter used is the same as the reception space parameter for receiving the first reference signal. The first communication device can determine, through the receiving port index indicated by the first instruction information and the predetermined corresponding rule, which port should be used to measure the uplink power information among the two ports sending the SRS. Optionally, by configuring the association between the reported power information and the SRS resources to be sent in advance, the first indication information may also indicate the receiving port index by indicating the port index of the SRS. N <M.

In the following example scenario, N <M and N = M may be used.

In an exemplary scenario, if the second communication device has two transmitting antenna ports and four receiving antenna ports and does not support SRS antenna switching, the second communication device fixedly uses M = 2 ports to send SRS. At this time, the power information measured by the second communication device is also measured based on one or all of the two ports. At this time, N = M = 2, or M = 2 and N = 1 may be used.

In another exemplary scenario, the second communication device has 2 transmitting antenna ports and 4 receiving antenna ports and supports SRS antenna switching, then the second communication device uses M = 2 ports to send an SRS for the first time, Send the SRS for the second time using another M = 2 ports. At this time, the power information measured by the second communication device may be measured based on the four ports, or may be measured based on two of the ports (for example, two ports used for the most recent SRS transmission from the current power information report). At this time, N = M or N <M may be used.

Based on the foregoing embodiment, when the at least one power information is determined according to the N received spatial parameters, it may be implemented in any one of the following manners or a combination thereof.

In a first manner, the at least one power information is determined according to a maximum power information of the first reference signal corresponding to the N received spatial parameters.

In this mode, the second communication device measures the power information of the first reference signal corresponding to each of the received spatial parameters according to the N received spatial parameters indicated by the first instruction information, and selects the maximum value to determine the at least one power information.

Optionally, the second communication device may use the obtained maximum value as the at least one power information, or the second communication device may perform other calculations on the maximum value and use the calculation result as the at least one power information.

Exemplarily, the foregoing other calculation of the maximum value may be a weighted calculation, such as calculating a product of the maximum value and a first preset factor.

Exemplarily, if the second communication device measures N power information according to the N reception space parameters indicated by the first instruction information, the maximum value of the N power information may be used as the at least one power information.

In the second manner, the at least one power information is determined according to an average value of the power information of the first reference signal corresponding to the N received spatial parameters.

In this method, the second communication device determines an average value of the power information of the first reference signal corresponding to each reception space parameter according to the N reception space parameters indicated by the first instruction information, and determines at least one of the foregoing according to the average value. Power information.

Optionally, the above-mentioned determination of the average value of the power information may be a weighted average in the dB domain of the power information, or a linear domain weighted average of the power information, which is not specifically described in the embodiment of the present application. limit.

Optionally, the second communication device may use the obtained average value as the at least one power information, or the second communication device may also perform other calculations on the average value, and use the calculation result as the at least one power information.

Exemplarily, the foregoing other calculation of the average value may be a weighted calculation, such as calculating a product of the average value and a second preset factor.

Exemplarily, if the second communication device measures N power information according to the N reception space parameters indicated by the first instruction information, the average value of the N power information may be used as the at least one power information.

At least one power information is determined by an average value of the power information of the first reference signal, which can reduce the influence of interference and noise on the measurement accuracy and improve the measurement accuracy of the power information. Similarly, the uplink power parameter can also be measured based on the average value. In this way, it helps to more accurately eliminate the influence of the transmission power of the uplink reference signal of the second communication device, and makes the precoding matrix more accurate.

In a third manner, the at least one power information is determined according to a summation value of the power information of the first reference signal corresponding to the N received spatial parameters.

In this manner, the second communication device measures the power information of the first reference signal according to the N receiving space parameters indicated by the first instruction information, and the second communication device may determine a sum value of the power information, and according to the request, The sum value determines at least one of the above power information.

Optionally, the second communication device may use the obtained summation value as the at least one power information, or the second communication device may also perform weighted calculation on the summation value, and use the calculation result as the at least one power value. information.

Exemplarily, if the second communication device measures N pieces of power information according to the N reception space parameters indicated by the first indication information, the sum of the N pieces of power information may be used as the at least one piece of power information.

Optionally, in the above three ways, when the second communication device determines the X _DL according to the process corresponding to step S204 above, each of the N receiving space parameters corresponding to each of the N receiving space parameters may first be calculated by formula (4) -formula (5). The downlink power information X _{DL of} each of the receiving ports is calculated based on the downlink power information X _DL of the multiple receiving ports corresponding to the N receiving space parameters to obtain the X _DL reported to the first communication device.

Taking the above first method as an example, the second communication device first calculates the downlink power information X _DL of each receiving port corresponding to the N receiving space parameters through formulas (4) to (5), and then selects each X The maximum value in _DL is used as the X _DL reported to the first communication device _.

In a fourth manner, the at least one piece of power information includes K pieces of power information, where the ith piece of power information is determined according to the ith piece of reception space parameters among the K pieces of reception space parameters, and the N pieces of reception space parameters include all For K pieces of power information, i is an integer greater than or equal to 1 and less than or equal to K.

In this method, if K is less than N, after the first indication information indicates N receiving space parameters, the second communication device selects a part of them, that is, the K power information corresponding to the K receiving space parameters, and The K pieces of power information are sent to the first communication device.

If K is equal to N, after the first indication information indicates N receiving space parameters, the second communication device obtains N power information corresponding to the N receiving space parameters, and sends the N power information to the first communication Device.

The fourth method can solve the problem caused by inaccurate amplitude calibration of multiple sending ports of the second communication device. For example, the second communication device has two transmitting ports and two receiving ports, where the two receiving ports have the same amplitude gain on the received signal, and the two transmitting ports have different amplitude gains on the transmitted signal. Then, the first communication device needs to obtain respective E _tx / E _{srs, l} for the two sending ports, where l represents a sending port index, l = 1 or l = 2. In order to obtain E _tx / E _{srs, l} for each port, the second communication device needs to measure and feed back the power information X _{DL, l} for each receiving port. The first communication device can determine E _tx / E _{srs, l} according to the foregoing method by measuring X _{UL, l} corresponding to the two sending ports, and then determine the channel matrix information required to calculate the precoding matrix according to the channel estimation result obtained by the SRS. . Optionally, in each of the foregoing modes, the power information of the first reference signal may be a weighted summation of power information on time-frequency resources occupied by the first reference signal in L time units, where L is a positive integer .

By including K pieces of power information in at least one piece of power information, a problem caused by inaccurate amplitude calibration of multiple transmission space parameters of the second communication device can be solved. Taking the sending space parameter as the transmitting antenna port and the receiving space parameter as the receiving antenna port as examples, when the second communication device receives data through multiple receiving ports, the first communication device needs to obtain accurate relative gains of the channels of the multiple receiving ports. . When the channels of different receiving ports are obtained by sending uplink reference signals from different transmitting ports, inaccurate amplitude calibration of different transmitting ports will cause the measurement of channels of different receiving ports to be affected by inaccurate amplitude calibration, resulting in different receiving ports The relative gain of the channel is not accurate.

At this time, the second communication device separately measures the power information corresponding to the different receiving space parameters and reports it to the first communication device. At the same time, the first communication device measures the uplink power information corresponding to the different transmitting space parameters, and the first communication device can pass Correct the problem caused by inaccurate transmit power calibration of different transmit ports, eliminate the impact of transmit power of different transmit ports, and make the precoding matrix more accurate.

In another embodiment, the second communication device may determine whether to send the at least one power information according to an instruction of the first communication device.

Optionally, the first communication device may send the first configuration information to the second communication device, where the first configuration information is used to indicate related configuration parameters of the at least one power information. Optionally, the configuration parameters include the frequency domain bandwidth corresponding to the power information, and may also include the value of K described above, and may also include an indication field of the associated second reference signal configuration information. This application is not restricted.

Optionally, after the second communication device receives the first configuration information, the second communication device may measure the power information of the first reference signal according to the indication of the first instruction information, and send the at least one power information to the first communication device. .

Optionally, when sending the first configuration information, the first communication device may carry the first indication information in the first configuration information, that is, the first configuration information includes the first indication information.

Optionally, the above-mentioned first indication information may also be included in other messages or information. For example, the above-mentioned first indication information may be sent through the third configuration information, which is not specifically limited in this embodiment of the present application. Optionally, the foregoing first indication information may be carried by at least one of RRC, MAC, CE, or DCI signaling. Exemplarily, assuming that the first indication information is included in the first configuration information, the first configuration information may be carried by RRC signaling.

In another embodiment, the second communication device may further send second instruction information, where the second instruction information is used to indicate a receiver type of the second communication device.

In an optional manner, the receiver type is used to indicate that the second communication device is a linear receiver or a non-linear receiver.

In another optional manner, the foregoing receiver type is used to indicate a type of a linear receiver, including a maximum ratio combining receiver MRC, a minimum mean square error receiver MMSE-IRC, and the like. For example, the type of the linear receiver is represented by 1 bit. Optionally, 0 indicates an MRC receiver, and 1 indicates an MMSE-IRC receiver.

In another optional manner, the foregoing receiver type is used to indicate the type of the receiver, including MRC, MMSE-IRC, and a minimum mean square error serial interference cancellation receiver MMSE-SIC. For example, the type of the linear receiver is represented by 2 bits. Optionally, 00 indicates the MRC receiver, 01 indicates the MMSE-IRC receiver, and 10 indicates the MMSE-SIC receiver.

In another optional manner, the foregoing receiver type is used to indicate receiver complexity. The receiver type can be inferred from the receiver complexity.

When the precoding matrix is determined through the process shown in FIG. 1 above, the terminal device needs to participate in the iterative process, that is, the terminal device needs to send SRS multiple times, resulting in low system complexity.

Taking the above-mentioned first communication device as a network device and the second communication device as a terminal device as an example, in this embodiment, sending the receiver type to the network device through the terminal device can enable the network device to perform multiple iterations by itself, avoiding the terminal The device sends SRS multiple times, reducing the complexity of the terminal device and greatly increasing the iteration speed, so that the performance gain of iterative optimization can be realized.

In the foregoing embodiments provided in the present application, the methods provided in the embodiments of the present application are introduced from the perspective of the first communication device, the second communication device, and the interaction between the first communication device and the second communication device, respectively. In order to implement the functions in the method provided by the embodiments of the present application, the first communication device and the second communication device may include a hardware structure and / or a software module in the form of a hardware structure, a software module, or a hardware structure plus a software module To achieve the above functions. Whether one of the above functions is executed by a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application of the technical solution and design constraints.

FIG. 4 is a module structure diagram of a communication device according to an embodiment of the present application. The device may be a second communication device or a second communication device capable of supporting the second communication device in the method provided in the embodiment of the application For example, the device may be a device or a chip system in a second communication device. As shown in FIG. 4, the device includes a receiving module 401, a processing module 402, and a sending module 403. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.

The processing module 402 is configured to obtain first indication information.

The receiving module 401 is configured to receive a first reference signal.

The sending module 403 is configured to send at least one power information of the first reference signal, where the at least one power information is determined according to a receiving space parameter indicated by the first instruction information, where the receiving space parameter includes the first The first antenna parameters of the two communication devices.

In a possible design, the received spatial parameters further include received spatial filtering parameters.

In one example, the received spatial filtering parameter may be a spatial Rx parameter.

In a possible design, the processing module 402 is specifically configured to:

The first instruction information is transmitted through the sending module 403, or the first instruction information is received through the receiving module 401.

In a possible design, the processing module 402 is further configured to:

Acquire configuration information of a second reference signal, where the second reference signal includes M ports, and different ports in the M ports have different transmission space parameters.

In a possible design, the transmission space parameter includes a second antenna parameter and / or a transmission space filter parameter, and the second antenna parameter includes antenna port information that the second communication device sends the second reference signal.

In one example, the reference signal associated with the indication may be configuration information indicating at least one second reference signal resource, or may be configuration information indicating at least one second reference signal resource set.

or,

In one example, the N receiving spatial parameters are associated with the transmitting spatial parameters of the M ports, and include:

The N reception space parameters are determined based on the transmission space parameters of all or part of the M ports, or

The sending space parameters of all or part of the M ports are determined based on the N receiving space parameters.

In one example, the N receiving space parameters are associated with the sending space parameters of the M1 ports, including:

The N reception space parameters are determined based on the transmission space parameters of the M1 ports, or

The sending space parameters of the M1 ports are determined based on the N receiving space parameters.

In one example, the at least one power information is determined according to the N receiving space parameters, including:

The at least one power information includes K power information, wherein the i-th power information is determined according to the i-th reception space parameter among the K reception space parameters, and the N reception space parameters include the K power Information, i is greater than or equal to 1 and less than or equal to K.

In a possible design, the receiving module 401 is further configured to:

Receiving first configuration information, where the first configuration information is used to instruct the second communication device to send the at least one power information.

In a possible design, the sending module 403 is further configured to:

Sending second instruction information, where the second instruction information is used to indicate a receiver type of the second communication device.

In a possible design, the receiving module 401 is further configured to:

Receiving second configuration information, where the second configuration information is used to indicate the N.

FIG. 5 is a module structural diagram of another communication device according to an embodiment of the present application. The device may be a first communication device or may be capable of supporting the first communication device to implement the first communication in the method provided in the embodiment of the present application. The device of the function of the device, for example, the device may be a device or a chip system in a first communication device. As shown in FIG. 5, the device includes a sending module 501, a processing module 502, and a receiving module 503. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.

The processing module 502 is configured to obtain first indication information.

The sending module 501 is configured to send a first reference signal.

The receiving module 503 is configured to receive at least one power information of the first reference signal, where the at least one power information is determined according to a receiving space parameter indicated by the first instruction information, where the receiving space parameter includes the first The first antenna parameters of the two communication devices.

In a possible design, the processing module 502 is specifically configured to:

The first instruction information is transmitted through the sending module 501, or the first instruction information is received through the receiving module 503.

In a possible design, the sending module 501 is further configured to:

Send configuration information of a second reference signal, where the second reference signal includes M ports, and different ports in the M ports have different transmission space parameters.

or,

In a possible design, the sending module 501 is further configured to:

Sending first configuration information, where the first configuration information is used to instruct the second communication device to send the at least one power information.

In a possible design, the receiving module 503 is further configured to:

Receiving second instruction information, where the second instruction information is used to indicate a receiver type of the second communication device.

In a possible design, the sending module 501 is further configured to:

Sending second configuration information, where the second configuration information is used to indicate the N.

The division of the modules in the embodiments of the present application is schematic and is only a logical function division. In actual implementation, there may be another division manner. In addition, the functional modules in the embodiments of the present application may be integrated into one process. In the device, it can also exist separately physically, or two or more modules can be integrated into one module. The above integrated modules may be implemented in the form of hardware or software functional modules.

As shown in FIG. 6, an apparatus 600 according to an embodiment of the present application is used to implement the function of the second communication apparatus in the foregoing method. The device may be a second communication device, or may be a device capable of supporting the second communication device to implement the functions of the second communication device in the method provided in the embodiment of the present application. The device may be a chip system. The apparatus 600 includes at least one processor 620, configured to implement the function of the second communication apparatus in the method provided in the embodiment of the present application. Exemplarily, the processor 620 may obtain the first indication information. For details, refer to the detailed description in the method example, and details are not described herein.

The apparatus 600 may further include at least one memory 630 for storing program instructions and / or data. The memory 630 and the processor 620 are coupled. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, and may be electrical, mechanical or other forms for information exchange between devices, units or modules. The processor 620 may operate in cooperation with the memory 630. The processor 620 may execute program instructions stored in the memory 630. At least one of the at least one memory may be included in a processor.

The device 600 may further include a communication interface 610 for communicating with other devices through a transmission medium, so that the devices used in the device 600 may communicate with other devices. In the embodiment of the present application, the communication interface may be any form of interface capable of communication, such as a module, a circuit, a bus, or a combination thereof. Optionally, the communication interface 610 may be a transceiver. Exemplarily, the other device may be a first communication device. The processor 620 uses the communication interface 610 to send and receive data, and is configured to implement the method performed by the second communication device described in the foregoing method embodiment.

The specific connection medium between the communication interface 610, the processor 620, and the memory 630 is not limited in the embodiment of the present application. In the embodiment of the present application, the memory 630, the processor 620, and the communication interface 610 are connected by a bus 640 in FIG. 6. The bus is shown by a thick line in FIG. 6. The connection modes of other components are only schematically illustrated. It is not limited. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only a thick line is used in FIG. 6, but it does not mean that there is only one bus or one type of bus.

As shown in FIG. 7, an apparatus 700 according to an embodiment of the present application is used to implement the function of the first communication apparatus in the foregoing method. The device may be a first communication device or a device capable of supporting the first communication device to implement the functions of the first communication device in the method provided in the embodiment of the present application. The device may be a chip system. The apparatus 700 includes at least one processor 720, and is configured to implement the function of the first communication apparatus in the method provided in the embodiment of the present application. Exemplarily, the processor 720 may obtain the first indication information. For details, refer to the detailed description in the method example, and details are not described herein.

The apparatus 700 may further include at least one memory 730 for storing program instructions and / or data. The memory 730 and the processor 720 are coupled. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, and may be electrical, mechanical or other forms for information exchange between devices, units or modules. The processor 720 may operate in cooperation with the memory 730. The processor 720 may execute program instructions stored in the memory 730. At least one of the at least one memory may be included in a processor.

The device 700 may further include a communication interface 710 for communicating with other devices through a transmission medium, so that the devices used in the device 700 may communicate with other devices. In the embodiment of the present application, the communication interface may be any form of interface capable of communication, such as a module, a circuit, a bus, or a combination thereof. Optionally, the communication interface 710 may be a transceiver. Exemplarily, the other device may be a second communication device. The processor 720 uses the communication interface 710 to send and receive data, and is configured to implement the method performed by the first communication device described in the foregoing method embodiment.

The specific connection medium between the communication interface 710, the processor 720, and the memory 730 is not limited in the embodiment of the present application. In the embodiment of the present application, the memory 730, the processor 720, and the communication interface 710 are connected by a bus 740 in FIG. 7. The bus is indicated by a thick line in FIG. 7. The connection modes of other components are only schematically illustrated. It is not limited. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 7, but it does not mean that there is only one bus or one type of bus.

In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which may implement or The disclosed methods, steps and logic block diagrams in the embodiments of the present application are executed. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in combination with the embodiments of the present application may be directly implemented by a hardware processor, or may be performed by a combination of hardware and software modules in the processor.

In the embodiment of the present application, the memory may be a non-volatile memory, such as a hard disk (HDD) or a solid-state drive (SSD), etc., and may also be a volatile memory (volatile memory), such as Random-access memory (RAM). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory in the embodiment of the present application may also be a circuit or any other device capable of implementing a storage function, for storing program instructions and / or data.

The methods provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present invention are wholly or partially generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or another programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL), or wireless) (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, and the like that includes one or more available medium integration. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (DVD), or a semiconductor medium (for example, an SSD), or the like.

Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these changes and variations.

Claims

A communication method, comprising:

The second communication device acquires the first instruction information;

Receiving, by the second communication device, a first reference signal;

Sending, by the second communication device, at least one power information of the first reference signal, the at least one power information is determined according to a receiving space parameter indicated by the first instruction information, and the receiving space parameter includes the first The first antenna parameters of the two communication devices.
The method according to claim 1, wherein:

The first antenna parameter includes antenna port information for the second communication device to measure the power information.
The method according to claim 1 or 2, wherein:

The receiving spatial parameters further include receiving spatial filtering parameters.
The method according to any one of claims 1-3, wherein the acquiring, by the second communication device, the first indication information comprises:

The second communication device sends the first instruction information, or the second communication device receives the first instruction information.
The method according to claims 1-4, wherein the first indication information indicates N reception space parameters;

The at least one power information is determined according to a receiving space parameter indicated by the first instruction information, and includes:

The at least one power information is determined according to the N receiving space parameters.
The method according to claim 5, further comprising:

The second communication device obtains configuration information of a second reference signal, where the second reference signal includes M ports, and different transmission space parameters of different ports among the M ports.
The method according to claim 6, wherein the first indication information indicates N receiving space parameters, including:

The first indication information indicates configuration information of the second reference signal, and the N reception space parameters are associated with the transmission space parameters of the M ports;

or,

The first indication information is used to indicate M1 ports among the M ports, and the N reception space parameters are associated with the transmission space parameters of the M1 ports, 1 <= M1 <= M.
The method according to any one of claims 5 to 7, wherein the at least one power information is determined according to the N receiving space parameters, and includes:

The at least one power information is determined according to a maximum value of the power information of the first reference signal corresponding to the N received spatial parameters.
The method according to any one of claims 5 to 7, wherein the at least one power information is determined according to the N receiving space parameters, and includes:

The at least one power information is determined according to an average value of power information of the first reference signal corresponding to the N received spatial parameters.
The method according to any one of claims 5 to 7, wherein the at least one power information is determined according to the N receiving space parameters, and includes:

The at least one power information includes K power information, wherein the i-th power information is determined according to the i-th reception space parameter among the K reception space parameters, and the N reception space parameters include the K power Information, 1 <= i <= K.
The method according to any one of claims 1 to 10, further comprising:

The second communication device receives first configuration information, and the first configuration information is used to instruct the second communication device to send the at least one power information.
The method according to any one of claims 1-11, further comprising:

The second communication device sends second instruction information, where the second instruction information is used to indicate a receiver type of the second communication device.
A communication method, comprising:

The first communication device acquires the first instruction information;

Sending, by the first communication device, a first reference signal;

Receiving, by the first communication device, at least one power information of the first reference signal, the at least one power information is determined according to a receiving space parameter indicated by the first instruction information, and the receiving space parameter includes receiving the A first antenna parameter of the second communication device of the first reference signal.
The method according to claim 13, wherein the first antenna parameter includes antenna port information for the second communication device to measure the power information.
The method according to claim 13 or 14, wherein the receiving spatial parameters further comprise receiving spatial filtering parameters.
The method according to any one of claims 13-15, wherein the acquiring, by the first communication device, the first indication information comprises:

The first communication device receives the first instruction information, or the first communication device sends the first instruction information.
The method according to any one of claims 13 to 16, wherein the first indication information indicates N reception space parameters;

The at least one power information is determined according to a receiving space parameter indicated by the first instruction information, and includes:

The at least one power information is determined according to the N receiving space parameters.
The method according to claim 17, further comprising:

The first communication device sends configuration information of a second reference signal, and the two reference signals include M ports, and different ports in the M ports have different transmission space parameters.
The method according to claim 18, wherein the first indication information indicates N receiving space parameters, comprising:

The first indication information indicates configuration information of the second reference signal, and the N reception space parameters are associated with the transmission space parameters of the M ports;

or,

The first indication information is used to indicate M1 ports among the M ports, and the N reception space parameters are associated with the transmission space parameters of the M1 ports, 1 <= M1 <= M.
The method according to any one of claims 17 to 19, wherein the at least one power information is determined according to the N receiving space parameters, including:

The at least one power information is determined according to a maximum value of the power information of the first reference signal corresponding to the N received spatial parameters.
The method according to any one of claims 17 to 19, wherein the at least one power information is determined according to the N receiving space parameters, including:

The at least one power information is determined according to an average value of power information of the first reference signal corresponding to the N received spatial parameters.
The method according to any one of claims 17 to 19, wherein the at least one power information is determined according to the N receiving space parameters, including:

The at least one power information includes K power information, wherein the i-th power information is determined according to the i-th reception space parameter among the K reception space parameters, and the N reception space parameters include the K power Information, 1 <= i <= K.
The method according to claim 13-22, further comprising:

The first communication device sends first configuration information, and the first configuration information is used to instruct the second communication device to report the power information.
The method according to claim 13-23, further comprising:

The first communication device receives second instruction information, and the second instruction information is used to indicate a receiver type of the second communication device.
A communication device, which is used to implement the method according to any one of claims 1-12.
A communication device, which is used to implement the method according to any one of claims 13-24.
A communication device, comprising: a memory and a processor;

The processor is configured to be coupled to the memory, read and execute instructions stored in the memory to implement the method according to any one of claims 1-12.
A communication device, comprising: a memory and a processor;

The processor is configured to be coupled to the memory, and read and execute instructions stored in the memory to implement the method according to any one of claims 13-24.
A chip system, characterized in that it comprises at least one communication interface, at least one processor, and at least one memory, for implementing the method according to any one of claims 1-12, or for implementing any one of claims 13-24 The method of one item.
A communication system, comprising the communication device according to claim 25 and the communication device according to claim 26, or the communication device according to claim 27 and the communication device according to claim 28.
A computer program product, wherein the computer program product includes computer program code, and when the computer program code is executed by a computer, causes the computer to execute the method according to any one of claims 1-12, or The computer is caused to perform the method according to any one of claims 13-24.
A computer-readable storage medium, characterized in that the computer storage medium stores computer instructions, and when the computer instructions are executed by a computer, cause the computer to execute the method according to any one of claims 1-12, Or instructions that cause the computer to execute the method according to any one of claims 13-24.