CN112740564B - Communication method, device and system - Google Patents

Abstract

The embodiment of the application relates to a communication method, a device and a system, wherein the method comprises the following steps: the terminal device obtains a receiving space parameter indicated by the first indication information, measures a first reference signal sent by the network device, and obtains at least one piece of downlink power information, wherein the receiving space parameter includes an antenna parameter of the terminal device, such as an antenna port. And the terminal equipment sends the at least one piece of downlink power information to the network equipment. The network device can eliminate the influence of the sending power of the terminal device sending the uplink reference signal on the estimation result of the channel of the terminal device based on the report of the at least one downlink power information and the uplink power information measured by the network 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, apparatus, and system.

Background technique

A multiple-input multiple-output (Multi-Input Multi-Output, MIMO) system is a system that utilizes multiple transmit antennas and multiple receive antennas to transmit and receive signals. On the premise that the transmitter uses a suitable precoding matrix P and the receiver uses a suitable receiver matrix G, the MIMO system can simultaneously send multiple data streams to a receiver using the same time-frequency resources, or simultaneously send multiple data streams to multiple receivers. Each receiver 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 impact on the system performance. Take downlink data transmission as an example, the sender is a network device, and the receiver is a terminal device. The network device needs to send data to multiple terminal devices at the same time. Therefore, the precoding matrix P used by the network device 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 received signal-to-noise ratio.

The prior art optimizes the precoding matrix P of the network device and the receiver matrix G of at least one terminal device by means of joint iterative optimization. In an optimal design of the precoding matrix P, the precoding matrix P needs to obtain the relative gains of the channels of multiple terminal equipments being served, and the relative gains of the channels of different ports of the same receiving end. However, the current technology cannot enable the sender to obtain the exact value of the above relative gain, so that the value of the precoding matrix P cannot match the actual channel, which affects the performance of data transmission. For example, in a time division duplex (time division duplex, TDD) system, the channels of multiple served terminal equipments are obtained by sending uplink reference signals by the terminal equipments. However, the channel information obtained through the uplink reference signal includes the transmission power of the uplink reference signal. Due to the device non-ideal factor of the terminal device, the network device cannot know the actual transmission power of the uplink reference signal, so that the influence of the power cannot be removed from the measurement result. Since the transmission power of the uplink reference signal of different terminal equipment may be different, the relative gain of the channel of different terminal equipment cannot be obtained by measuring the uplink channel. Therefore, the precoding matrix P obtained according to the prior art cannot match the actual channel.

SUMMARY OF THE INVENTION

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

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

In this method, the second communication apparatus determines at least one power information of the first reference signal by using the receiving space parameter indicated by the first indication information. After the first communication device receives the at least one power information, the precoding matrix may be determined based on the at least one power information and uplink power information measured by the first communication device itself. The function of the first indication information is to make at least one piece of power information reported by the second communication device have an associated 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 power, so that the determined precoding matrix matches the actual channel.

In a possible design, the second communication apparatus obtains the first indication information, including:

The second communication apparatus sends the first indication information, or the second communication apparatus receives the first indication information.

The second communication device sends the first indication information, and notifies the first communication device of the reception space parameter based on at least one power information, so that the first communication device can measure the uplink power information based on the transmission space parameter of the associated second communication device, Therefore, the at least one power information reported by the second communication device is associated 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 The determined precoding matrix matches the actual channel. Optionally, this method is applicable to a situation where the second communication apparatus first measures the first reference signal, and then sends the uplink reference signal. Optionally, the method can enable the second communication device to select the receiving space parameter corresponding to the power information with the best power information measurement quality (eg, the power value is the largest), thereby improving the measurement accuracy of the at least one power information.

Optionally, the receiving of the first indication information by the second communication apparatus is applicable to a situation in which the second communication apparatus 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 receiving space parameters corresponding to the uplink reference signal according to its own implementation algorithm to measure the 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 piece of power information reported by the second communication device has an associated relationship with the uplink power information measured by the first communication device, so that the first communication device has an associated relationship. 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, the method can enable the first communication device to select uplink power information with the best power information measurement quality (eg, the power value is the largest), so as to improve the measurement accuracy of the above uplink power information.

In one possible design, also include:

The second communication apparatus acquires 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 to make the at least one piece of power information reported by the second communication device and the uplink power information measured by the first communication device have an associated relationship, one way is to associate the reception space parameter for receiving the first reference signal with the transmission space parameter for sending the second reference signal. Associated. When the second communication apparatus adopts multiple different receiving space parameters to receive the first reference signal, the multiple associated sending space parameters should also not be different.

In one possible design, also include:

The second communication device receives 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 one possible design, also include:

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

In this method, the receiver type is sent by the second communication device to the first communication device, so that the first communication device can perform multiple iterations by itself, thereby avoiding the second communication device participating in the iteration and reducing the computational complexity of the second communication device , to avoid sending multiple uplink reference signals, thereby greatly improving the iteration speed, so that the performance gain of iterative optimization can be realized.

In one possible design, also include:

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

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

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

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

In this method, the second communication apparatus determines at least one power information of the first reference signal by using the receiving space parameter indicated by the first indication information. After the first communication device receives the at least one power information, the precoding matrix may be determined based on the at least one power information and uplink power information measured by the first communication device itself. The function of the first indication information is to make at least one piece of power information reported by the second communication device have an associated 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 power, so that the determined precoding matrix matches the actual channel.

In a possible design, the first communication device obtains the first indication information, including:

The first communication apparatus sends the first indication information, or the first communication apparatus receives the first indication information.

When the first communication device receives the first indication information, the first communication device can be made to measure the uplink power information based on the transmission space parameter of the associated second communication device, so that the at least one power information reported by the second communication device is consistent with the first communication device. The measured uplink power information has an associated 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, this method is applicable to a situation where the second communication apparatus first measures the first reference signal, and then sends the uplink reference signal. Optionally, the method can enable the second communication device to select the receiving space parameter corresponding to the power information with the best power information measurement quality (eg, the power value is the largest), thereby improving the measurement accuracy of the at least one power information.

The sending of the first indication information by the first communication device is applicable to the case where the second communication device first sends the 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 receiving space parameters corresponding to the uplink reference signal according to its own implementation algorithm to measure the 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 piece of power information reported by the second communication device has an associated relationship with the uplink power information measured by the first communication device, so that the first communication device has an associated relationship. 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, the method can enable the first communication device to select uplink power information with the best power information measurement quality (eg, the power value is the largest), so as to improve the measurement accuracy of the above uplink power information.

In one possible design, also include:

The first communication apparatus 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 sending space parameters.

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

In one possible design, also include:

The first communication apparatus sends first configuration information, where the first configuration information is used to instruct the second communication apparatus to send the at least one piece of power information.

In one possible design, also include:

The first communication apparatus receives second indication information, where the second indication information is used to indicate a receiver type of the second communication apparatus.

In this method, the receiver type is sent by the second communication device to the first communication device, so that the first communication device can perform multiple iterations by itself, thereby avoiding the second communication device participating in the iteration and reducing the computational complexity of the second communication device , to avoid sending multiple uplink reference signals, thereby greatly improving the iteration speed, so that the performance gain of iterative optimization can be realized.

In one possible design, also include:

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

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

In the above-mentioned first aspect to the above-mentioned second aspect, there are the following possible designs:

In a possible design, the power information is a parameter determined according to the received power of the signal. The power information may be RSRP, RSRQ, RSSI or received amplitude information, or may 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 on which the second communication apparatus measures the power information.

By making the receiving space parameter include the first antenna parameter of the second communication device, 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 the channels corresponding to different antenna ports/antennas are different, by explicitly indicating the information of the antenna ports, the above correlation relationship can be made more accurate, and the obtained precoding matrix is 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 receiving spatial parameters include the receiving spatial filtering parameters, the above correlation relationship can be further made 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 the receiving space parameter indicated by the first indication information, including:

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

In a possible design, the sending spatial parameter includes a second antenna parameter and/or a sending spatial filtering parameter, and the second antenna parameter includes antenna port information for sending the second reference signal by the second communication apparatus .

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

By indicating the receiving port information of the second communication apparatus, the receiving port on which the measurement of the above-mentioned 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 should be associated with the reception port, for example, the transmission port is the reception port, and or the spatial filtering parameter of the transmission port is equal to the reception port. the spatial filtering parameters. In this way, the first communication device can accurately eliminate the influence of the power of the uplink reference signal, so that the precoding matrix matches the real channel.

By indicating the associated reference signal, it is also possible to specify the reception space parameter on which the measurement of the at least one power information is based, wherein the reception space parameter based on it is associated with the transmission space parameter of the transmission port of the associated reference signal (eg, equal). Taking the first communication device to measure the uplink reference signal as an example, the first communication device selects all or part of the transmission space parameters (eg, transmission ports) 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 the second communication device obtains the receiving space parameter that needs to be used when measuring the first reference signal and should be associated (eg, equal) with the indicated sending space parameter. Then, 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, so that the determined precoding matrix is consistent with the actual data. channel matching.

In a possible design, the above-mentioned indication of the associated reference signal may be configuration information indicating at least one second reference signal resource, or may also 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 a smaller number of bits, the required information can be indicated. The second reference signal is an uplink reference signal sent by the second communication apparatus.

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 receive space parameters are associated with the transmit space parameters of the M ports;

or,

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

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

In a possible design, the N receive space parameters are associated with the transmit space parameters of the M ports, including:

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 receive space parameters are associated with the transmit space parameters of the M1 ports, including:

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

Optionally, the above 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 above 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. Others are the same and will not be repeated here.

By associating the N receiving space parameters with the sending space parameters of the M ports, the first communication device can determine the precoding matrix based on the uplink power information measured by itself and at least one piece of power information reported by the second communication device, thereby eliminating the need for 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.

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

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

Determining at least one piece of power information by using the maximum value of the power information of the first reference signal enables the second communication device to select the power information with the best power information measurement quality (for example, the maximum power value) to report, thereby improving the measurement of at least one piece of power information. The accuracy helps to accurately eliminate the influence of the transmission power of the uplink reference signal of the second communication device, so that the precoding matrix is more accurate.

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 an average value of the power information of the first reference signal corresponding to the N received spatial parameters.

Determining at least one piece of power information by using the average value of the power information of the first reference signal can reduce the influence of interference and noise on the measurement accuracy, and improve the measurement accuracy of the power information.

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 includes K pieces of power information, where the i-th power information is determined according to the i-th reception space parameter in the K reception space parameters, and the N reception space parameters include the K power information information, 1<=i<=K.

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

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

The at least one piece of 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 a possible design, the power information of the first reference signal is a weighted summation value of the power information on the time-frequency resources occupied by the first reference signal in L time units, where 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 an embodiment of the present application provides a communication device, where the communication device may be a second communication device, or may be capable of supporting the second communication device to perform corresponding functions performed by the second communication device in the design example of the first aspect. The device, for example, the device may be a device or a chip system in a second communication device, the device may include a receiving module, a processing module and a sending module, and these modules may perform the execution of the second communication device in the design example of the first aspect. The corresponding functions, specifically:

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

The receiving module is used for receiving the first reference signal.

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

In a possible design, for an indication method of the first indication information, reference may be made to the specific description in the first aspect, which is not specifically limited here.

A fourth aspect of an embodiment of the present application provides a communication device, where the communication device may be a first communication device, or may be capable of supporting the first communication device to perform corresponding functions performed by the first communication device in the design example of the second aspect above The device, for example, the device may be a device or a chip system in the first communication device, 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 above-mentioned second aspect design example. The corresponding functions, specifically:

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

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

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

In a possible design, reference may be made to the specific description in the second aspect for an indication method of the first indication information, which is not specifically limited here.

A fifth aspect of an embodiment of the present application provides a communication device, where the communication device includes a processor configured to implement the function of the second communication device in the method described in the first aspect above. The communication apparatus may also include a memory for storing program instructions and data. The memory is coupled to the processor, and the processor can call and execute program instructions stored in the memory, so as to implement the function of the second communication device in the method described in the first aspect above. The second communication device may further include a communication interface 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 acquire first indication information, receive a first reference signal, and send at least one piece of power information of the first reference signal, where the at least one piece of power information is a receiving space indicated by the first indication information If the parameter is determined, the receiving space parameter includes the first antenna parameter of the second communication device.

In a possible design, for an indication method of the first indication information, reference may be made to the specific description in the first aspect, which is not specifically limited here.

A sixth aspect of an embodiment of the present application provides a communication device, where the communication device includes a processor configured to implement the function of the first communication device in the method described in the second aspect above. The communication apparatus may also include a memory for storing program instructions and data. The memory is coupled to the processor, and the processor can call and execute program instructions stored in the memory, so as to implement the function of the first communication device in the method described in the second aspect above. The first communication apparatus may further include a communication interface for the first communication apparatus 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 acquire 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 by the first indication information If the parameter is determined, the receiving space parameter includes the first antenna parameter of the second communication device.

In a possible design, reference may be made to the specific description in the second aspect for an indication method of the first indication information, which is not specifically limited here.

A seventh aspect of an embodiment of the present application provides a chip system, where the chip system includes a processor, may also include a memory, and may also include a communication interface, for implementing the function of the first communication device or the second communication device in the above 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 described in the first aspect, or The computer is caused to perform the method of the second aspect.

A ninth aspect of an embodiment 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, causes the computer to execute the first aspect or the second aspect. method described.

A tenth aspect of an embodiment of the present application provides a system, where the system includes the communication device described in the third aspect and the communication device described in the fourth aspect; or the system includes the communication device described in the fifth aspect and the sixth aspect The communication device of the aspect.

Description of drawings

Fig. 1 is the example flow that the joint iterative optimization method is carried out in TDD system;

FIG. 2 is an exemplary system architecture diagram of a communication method involved in an embodiment of the application;

3 is a schematic diagram of an interaction flow of a communication method provided by an embodiment of the present application;

FIG. 4 is a module structure diagram of a communication device provided by an embodiment of the present application;

FIG. 5 is a module structure diagram of another communication device provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of an apparatus 600 provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of an apparatus 700 provided by an embodiment of the present application.

Detailed ways

In this application, "at least one" means one or more, and "plurality" means two or more. "And/or", which describes the association relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, which can indicate: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A, B can be singular or plural. The character "/" generally indicates that the associated objects are an "or" relationship. "At least one item(s) below" or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (a) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c may be single or multiple .

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

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

S101. The network device obtains the downlink channel matrix H _k of the kth terminal device by measuring the sounding reference signal (sounding reference signal, SRS) of the K terminal devices.

P_k表示网络设备为第k个终端设备确定的初始预编码矩阵，L表示网络设备调度的总数据层数，满足

l_k表示网络设备为第k个终端设备调度的数据层数。一种可选的方式，P可以采用迫零(Zero Forcing，ZF)的设计原则获得。Among them, H _k is a matrix with N _rk rows and N _t columns, N _rk represents the number of antenna ports for transmitting SRS of the kth terminal device (also the number of antenna ports for receiving downlink signals), and N _t represents the antenna port of the network device number. Based on the information of the channel matrix H _k of the K terminal devices, the network device can determine the initial precoding matrix according to a specific algorithm or principle

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

l _k indicates the number of data layers scheduled by the network device for the kth terminal device. In an optional way, P can be obtained by adopting the design principle of Zero Forcing (ZF).

S102: The network device uses P _k as a precoding matrix, and sends a precoded channel state information reference signal (channel state information reference signal, CSI-RS) to the kth terminal device.

S103, the kth terminal device measures the equivalent channel H _k *P _k to determine the initial receiver matrix

S104. The kth terminal equipment uses G _k to precode the SRS, and sends the precoded SRS, so that the network equipment obtains the equivalent channel G _k *H _k , then the network equipment determines the equivalent channel according to the equivalent channel of the K terminal equipment. The precoding matrix P=[P ₁ . . . P _K ] when .

Since the precoding matrix obtained according to the ZF principle is not the optimal precoding matrix, the network device may obtain the precoding matrix based on the minimum mean square error (Minimum Mean Square Error, MMSE) principle to further improve the sum rate of the system.

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

为维度为

行N_t列的矩阵，()^H表示对矩阵的共轭转置，

表示网络设备将来进行数据调度时的发送功率。G＝diag{G₁，...，G_K}是由G₁，...，G_K构成的块对角矩阵，维度为L行

列。W为L行L列的矩阵，例如，可以根据各终端设备的优先权重确定。α和β为实数，I_m为维度为m*m的单位阵。in,

is the dimension of

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

Indicates the transmit power of the network device when scheduling data in the future. G=diag{G ₁ ,...,G _K } is a block diagonal matrix composed of G ₁ ,..., G _K , the dimension is L rows

List. W is a matrix with L rows and L columns, for example, it can be determined according to the priority weight of each terminal device. α and β are real numbers, and Im is an identity matrix of dimension _m *m.

S105: The network device sends the precoded CSI-RS to the kth terminal device according to P _k in P obtained in step S104 as a precoding matrix.

S106. The kth 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, and on this basis, the steps S104-S106 can be iteratively executed several times. During the iteration, the precoding matrix P of the network device and the receiver _matrix Gk of each terminal device are continuously updated. When the iterations converge, the obtained P and G _k can match each other better, improving the system performance.

When using the above method 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.

(或者

)。其中，

是终端设备k的SRS的发送功率。由于器件等非理想因素，网络设备无法获知实际的SRS发送功率，从而无法从测量结果中去除

的影响，进而获得

(或者

)。也即，网络设备无法获得不同终端设备的信道增益的相对关系。因此，网络设备基于上述公式(1)获得的导MMSE预编码矩阵不能匹配实际的信道，严重降低系统的性能。In the TDD system, H _k is determined based on the channel measured by the SRS sent by each terminal device. The measurement result includes the influence of the SRS transmission power, that is, the measurement result is

(or

). in,

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

influence to obtain

(or

). That is, the network device cannot obtain the relative relationship between the channel gains of different terminal devices. Therefore, the derived 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 (for example, the eigenvector 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 device will normalize H _k or related information, so the network device cannot obtain the relative channel gains of different terminal devices. Therefore, the derived MMSE precoding matrix obtained by the network device based on the above formula (1) also cannot match the actual channel, which seriously reduces the performance of the system.

The methods provided in the embodiments of the present application aim to solve the above problems.

In order to make those skilled in the art better understand the technical solutions of the present application, the following first explains the technical terms involved in the present application.

1. Power information

The power information described in this embodiment of the present application is a parameter determined according to the received power of the 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 time-frequency resources occupied by the reference signal, or a parameter determined according to the received power of the reference signal and or other information. In the current 36PP standard, Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), and Received Signal Strength Indicator (RSSI) can all be implemented in this application. Definition of power information in the example. Alternatively, the power information of the signal may also be defined as received amplitude information of the signal, etc., or may be determined according to one or more of them, which is not specifically limited in this embodiment of the present application. Since power can be determined from magnitude and vice versa, the two can be considered equivalent.

Among them, RSRP is the average value of the reference signal power received on all time-frequency resources that carry the reference signal, and RSSI is the average power of all signals (including pilot signals, interference signals, noise signals, etc.) carried in a certain symbol. value, RSRQ is determined according to 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, etc., which is not specified in the embodiment of the present application. limit.

An antenna port group consists of at least one antenna port. One way of definition is that one antenna port group corresponds to all antennas or all antenna ports on one antenna panel (panel) of the terminal device. One way of defining it is that an antenna port group consists of antennas or antenna ports from which a terminal device can transmit signals (such as SRS) at the same time. Another way of defining it is that an antenna port group consists of the antennas or antenna ports through which the terminal equipment can transmit signals (such as SRS). Another way of defining it is that an antenna port group consists of the antennas or antenna ports that the terminal device can receive signals at the same time. The antenna port group may also be defined in other manners, which are not limited in this embodiment of the present application. One 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. Receive spatial filtering parameters

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

4. Send spatial filtering parameters

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

In some cases (eg TDD systems), the transmit spatial filtering parameters can be determined from the receive spatial filtering parameters, and vice versa. In the case of channel reciprocity, the optimal receive spatial filtering parameter and the optimal transmit spatial filtering parameter are the same, so one parameter can be indicated to determine the other parameter.

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

In this embodiment of the present application, the terminal device may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem. Terminal devices may communicate with one or more core networks via a radio access network (RAN), and may be mobile terminal devices such as mobile phones (or "cellular" phones) and devices with mobile terminals The computers, for example, may be portable, pocket-sized, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange language and/or data with the 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 (PDAs) ), 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 future evolved public land mobile networks (PLMNs) ), which is not limited in this embodiment of the present application. A terminal device may also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, Remote terminal, access terminal, user terminal, user agent, user device, or user equipment.

In this embodiment of the present application, the network device may be a base station. The base station may be a device deployed in a radio access network and capable of wirelessly communicating with a terminal device. The base station can be used to convert received air frames to and from IP packets, and act as a router between the end device and the rest of the access network, which can include an Internet Protocol (IP) network; the base station can also Coordinates attribute management for the air interface. For example, the base station may be a base transceiver station (BTS) in a global system for mobile communication (GSM) or a code division multiple access (CDMA), or a wideband code division multiple access (CDMA). A base station (NodeB) in wideband code division multiple access, WCDMA), an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE, or a gNB in NR, or the like. The base station may also be a wireless controller in a cloud radio access network (CRAN) scenario, or may be a relay station, an access point, an in-vehicle device, a wearable device, and a network device in a 5G network, or a future evolved network device. Network devices and the like in the PLMN network are not limited in the embodiments of the present application.

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

The methods involved in this application are applicable to both homogeneous network and heterogeneous network scenarios. At the same time, there is no limitation on the transmission point, for example, the macro base station and the macro base station, the micro base station and the micro base station, and the multi-point coordinated transmission between the macro base station and the micro base station can be supported. In addition, the method involved in the present application can be used in a frequency division duplex (frequency division duplex, FDD) system, and can also be used in a TDD system. Meanwhile, the method involved in the present application is also applicable to both low-frequency scenarios (below 6 GHz) and high-frequency scenarios (above 6 GHz).

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

FIG. 3 is a schematic diagram of an interaction flow of a communication method provided by an embodiment of the present application. As shown in FIG. 3 , the interaction flow involved in the method is:

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

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 power information of the first reference signal.

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

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

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

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

The specific meaning of the above-mentioned power information may refer to the aforementioned term explanation part, which will not be repeated here.

Optionally, the above-mentioned receiving space parameter includes the above-mentioned first antenna parameter of the second communication apparatus.

By making the receiving space parameter include the first antenna parameter of the second communication device, 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 the channels corresponding to different antenna ports/antennas are different, by explicitly indicating the information of the antenna ports, the above correlation relationship can be made more accurate, and the obtained precoding matrix is more accurate.

Optionally, the above-mentioned first antenna parameter includes antenna port information on which the above-mentioned second communication apparatus measures the above-mentioned power information. For the specific meaning of the antenna port information, reference may be made to the aforementioned term explanation part, which will not be repeated here.

Exemplarily, the above-mentioned first antenna parameter may include an antenna port index or an antenna index at which the above-mentioned second communication apparatus measures the above-mentioned power information.

Optionally, the above-mentioned receiving space parameters further include receiving space 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 receiving spatial parameters include the receiving spatial filtering parameters, the above correlation relationship can be further made more accurate, and the obtained precoding matrix can be more accurate.

For the specific meanings of the receiving spatial filtering parameters, please refer to the aforementioned term explanation part, which will not be repeated here. Exemplarily, the above-mentioned receiving spatial filtering parameters may be referred to as spatial Rx paramters, where the spatial Rx paramters include antenna weighting parameters.

Wherein, in the uplink direction, the second communication apparatus may send a second reference signal to the first communication apparatus, for the first communication apparatus to measure uplink reference signal power information. 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 illustration, but the embodiments of the present application are not limited to this.

As an example, the indication information may be used to make the spatial parameter of the antenna port for sending the SRS by the second communication apparatus to be the same as the spatial parameter for the antenna port for receiving the CSI-RS.

The specific process of indicating the above-mentioned receiving space parameter through the first indication information will be described in detail in the following embodiments.

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

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

The following describes the process of determining the precoding matrix by the first communication apparatus by using an example.

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

In the uplink direction, the second communication device transmits the SRS through one of the antenna ports A. Correspondingly, the first communication device can use one antenna port B to receive the SRS, and the first communication device is on the f-th 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 the SRS, h _f is the uplink channel coefficient from the transmitting port A of the second communication device to the receiving port B of the first communication device, which is a complex number, s is the SRS symbol, the first communication The device and the second communication device have known the value of this parameter in advance, and n is interference and/or noise.

进而，第一通信装置通过如下公式(3)计算第二通信装置的上述天线端口A对应的上行功率信息X_UL：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 above-mentioned antenna port A of the second communication device according to the following formula (3):

表示|x|²的平均值。Among them, F is the total number of time-frequency resources occupied by the SRS.

Represents the mean of |x| ² .

In the downlink direction, the first communication apparatus transmits the CSI-RS through the above-mentioned port B. The second communication device receives the CSI-RS through the plurality of receive 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:

Wherein, E _csi-rs is the power of the first communication device to send CSI-RS, h _f is the downlink channel coefficient from the transmission port B of the first communication device to the receiving port C of the second communication device, x is the CSI-RS symbol, The first communication device and the second communication device have known the value of this parameter in advance, and n' is interference and or noise.

进而，第二通信装置通过如下公式(5)计算第一通信装置的上述天线端口A对应的下行功率信息X_DL：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 above-mentioned antenna port A of the first communication device according to the following formula (5):

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

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

则第一通信装置可以通过公式(7)获得E_tx与E_srs的比值：like

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 first communication apparatus for sending data is equal to the power E _csi-rs for sending the CSI-RS, or has a pre-known ratio relationship, E _tx /E _srs can be calculated according to (7).

通过下述公式(8)得到公式(1)所需要的一个第二通信装置的

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

A second communication device required by formula (1) is obtained by the following formula (8)

Wherein, H is the channel matrix of the above-mentioned second communication device.

因此，各个第二通信装置的相对信道增益被准确获取，第一通信装置通过上述公式(1)计算的预编码矩阵的准确性可以得到保证。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 simultaneously transmits data for K second communication devices, E _tx /E _srs,k of the k th second communication device can be obtained by the above method, 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.

或者

满足该等式或不等式的前提是第二通信装置的发送端口A和接收端口C是互相关联的端口，例如，对应相同的物理天线。若端口A和端口C由多个物理天线虚拟化而成，则端口A的接收滤波参数和端口C的发送滤波参数也是相同的。由于不同端口的信道是不同的，因此，如果没有端口A和端口C相关联的约束，则很难保证

则无法获得准确的E_tx/E_srs。The key to get formula (7) is to satisfy

or

The premise of satisfying this equation or inequality is that the transmitting port A and the receiving port C of the second communication device are mutually related ports, for example, corresponding to the same physical antenna. If port A and port C are virtualized from multiple physical antennas, the receive filtering parameters of port A and the transmit filtering parameters of port C are also the same. Since the channels are different for different ports, without the constraints associated with port A and port C, it is difficult to guarantee

Then the exact E _tx /E _srs cannot be obtained.

Therefore, the first communication device needs to ensure that the sending port of the second communication device corresponding to the X _UL calculated by itself is associated with the receiving port corresponding to the X _DL fed back by the second communication device. Therefore, the receiving port corresponding to the fed back X _DL needs to be indicated by the first indication information to ensure the above constraint.

In this embodiment, the second communication apparatus determines at least one power information of the first reference signal by using the receiving space parameter indicated by the first indication information. After the first communication device receives the at least one power information, the precoding matrix may be determined based on the at least one power information and uplink power information measured by the first communication device itself. The function of the first indication information is to make at least one piece of power information reported by the second communication device have an associated 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 power, so that the determined precoding matrix matches the actual channel.

As an optional manner, the first communication apparatus may first obtain the first indication information, and the second communication apparatus may also obtain the first indication information first.

It should be noted that, in this embodiment of the present application, the order in which the first communication device obtains the first indication information and sends the first reference signal is not specifically limited, and the first communication device may obtain the first indication information first, and then send the first reference signal. For the first reference signal, the first reference signal may also be sent first, and then the first indication information is acquired.

In addition, in this 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 first, and then receive the first reference signal. signal, the first reference signal may also be received first, and then the first indication information may be acquired.

The manner in which the first communication apparatus and the second communication apparatus obtain the above-mentioned first indication information may be any one of the following.

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

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

Exemplarily, the first communication apparatus determines the above-mentioned first antenna parameter, obtains first indication information for indicating the first antenna parameter, and sends the first indication information to the second communication apparatus. After receiving the first indication information, the second communication apparatus may acquire the first antenna parameter.

The receiving of the first indication information by the second communication device is applicable to the case where the second communication device first transmits the 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 receiving space parameters corresponding to the uplink reference signal according to its own implementation algorithm to measure the 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 piece of power information reported by the second communication device has an associated relationship with the uplink power information measured by the first communication device, so that the first communication device has an associated relationship. 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, the method can enable the first communication device to select uplink power information with the best power information measurement quality (eg, the power value is the largest), so as to improve the measurement accuracy of the above uplink power information.

In the second manner, the second communication device sends the first indication information to the first communication device, and the second communication device receives the first indication information.

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

Exemplarily, the second communication apparatus determines the above-mentioned first antenna parameter, obtains first indication information for indicating the first antenna parameter, and sends the first indication information to the first communication apparatus. After receiving the first indication information, the first communication apparatus may acquire the first antenna parameter.

The second communication device sends the first indication information, and notifies the first communication device of the reception space parameter based on at least one power information, so that the first communication device can measure the uplink power information based on the transmission space parameter of the associated second communication device, Therefore, the at least one power information reported by the second communication device is associated 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 The determined precoding matrix matches the actual channel. Optionally, this method is applicable to a situation where the second communication apparatus first measures the first reference signal, and then sends the uplink reference signal. Optionally, the method can enable the second communication device to select the receiving space parameter corresponding to the power information with the best power information measurement quality (eg, the power value is the largest), thereby improving the measurement accuracy of the at least one power information.

The following describes the process of indicating the above-mentioned receiving space parameter through the first indication information.

Optionally, the foregoing first indication information may indicate N receiving space parameters, where N is an integer greater than zero. Optionally, the above N may be a fixed value or a preconfigured value. Exemplarily, the first communication apparatus may send second configuration information to the second communication apparatus, where the second configuration information is used to indicate the above-mentioned N.

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

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

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

As an optional implementation manner, the manner in which the above-mentioned first indication information indicates the N receiving space parameters may be to indicate the receiving port information (for example, the receiving port index or the number of receiving ports) of the second communication device, wherein different receiving The receive space parameters of the ports are different.

As another optional implementation manner, the manner in which the above-mentioned first indication information indicates the N receiving space parameters may be the configuration information indicating the associated second reference signal, wherein the port on which the second communication apparatus sends the second reference signal The transmit space parameters of are associated with the above N receive space parameters.

By indicating the receiving port information of the second communication apparatus, the receiving port on which the measurement of the above-mentioned 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 should be associated with the reception port, for example, the transmission port is the reception port, and or the spatial filtering parameter of the transmission port is equal to the reception port. the spatial filtering parameters. In this way, the first communication device can accurately eliminate the influence of the power of the uplink reference signal, so that the precoding matrix matches the real channel.

By indicating the associated reference signal, it is also possible to specify the reception space parameter on which the measurement of the at least one power information is based, wherein the reception space parameter based on it is associated with the transmission space parameter of the transmission port of the associated reference signal (eg, equal). Taking the first communication device to measure the uplink reference signal as an example, the first communication device selects all or part of the transmission space parameters (eg, transmission ports) 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 the second communication device obtains the receiving space parameter that needs to be used when measuring the first reference signal and should be associated (eg, equal) with the indicated sending space parameter. Then, 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, so that the determined precoding matrix is consistent with the actual data. channel matching.

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, different ports have different sending space parameters. Optionally, the transmission spatial parameters may include second antenna parameters and/or transmission spatial filtering parameters. Optionally, the second antenna parameter includes antenna port information for sending the second reference signal by the second communication apparatus.

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

Optionally, before the second communication apparatus sends the second reference signal to the first communication apparatus, the second communication apparatus 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 apparatus to the second communication apparatus.

Optionally, the above-mentioned first indication information indicates the associated second reference signal, which may be configuration information indicating at least one second reference signal resource, then the above-mentioned N receiving space parameters and all of the at least one second reference signal resource The transmission space parameters of M ports in the ports are associated; or, the above-mentioned first indication information indicates the associated second reference signal, which is configuration information indicating at least one second reference signal resource set, wherein each resource set includes one or more resources, the above-mentioned N reception space parameters are associated with transmission space parameters of M ports in all ports of the second reference signal resources included in the at least one second reference signal resource set. That is, the above-mentioned M ports may be ports of one second reference signal resource, or may be ports of different second reference signal resources.

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 a smaller number of bits, the required information can be indicated. The second reference signal is an uplink reference signal sent by the second communication apparatus.

Furthermore, when the N receiving space parameters are indicated by the above-mentioned first indication information, it can be implemented by any one of the following two ways:

In one manner, the first indication information may indicate configuration information of the second reference signal, for example, a configuration index, and the N reception space parameters are associated with the transmission space parameters of the M ports.

Wherein, the above-mentioned N receiving space parameters are associated with the above-mentioned sending space parameters of the M ports may refer to that the N receiving space parameters are determined by the sending space parameters of all or part of the M ports, or, all or some of the M ports are determined by the sending space parameters. The transmit space parameters of some ports are determined by N receive space parameters.

For example, the above-mentioned N receiving space parameters are determined based on the transmitting space parameters of M1 ports among the above-mentioned M ports, where M1 is less than or equal to M. For another example, the sending space parameters of M1 ports in the above-mentioned M ports are determined based on the N receiving 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 relationship between the transmission space parameters of the M ports and the N reception space parameters can be indicated. Obtain N receiving space parameters.

Exemplarily, it is assumed that the second communication apparatus has two transmit antenna ports and two receive antenna ports, and the at least one power information is defined as the average value of the first reference signal power measured by all the indicated receive ports. In this scenario, the second communication device first sends an SRS resource through M=2 ports, and saves the transmission space parameters of the M=2 ports; The indication information indicates configuration information (eg, resource configuration index) of the SRS resource. The second communication device reads the stored transmission space parameters of M=2 ports through the configuration information of the SRS resources indicated by the first indication information, and determines N=2 reception space parameters required to receive CSI-RS according to the transmission space parameters . That is, the second communication apparatus determines N reception space parameters according to the transmission space parameters of the M ports.

Furthermore, the second communication apparatus 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 indices, the second communication apparatus may perform measurements on the ports corresponding to the N port indices or a part of the N indices. If the N receiving space parameters include the number of ports with a value of N, the second communication apparatus may determine, according to a predefined rule, a corresponding number of ports from the ports that transmit the second reference signal to perform the power transmission of the first reference signal. Measurement.

In another manner, the manner in which the above-mentioned first indication information indicates the N receiving space parameters may be to indicate M1 ports among the M ports of the associated second reference signal, and the above-mentioned N receiving space parameters are related to the above-mentioned M1 ports. is associated with the transmission space parameters of , 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, which will not be described again. The above-mentioned N receiving space parameters are associated with the above-mentioned sending space parameters of the M1 ports may refer to 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 determined by N receiving space parameters space parameters to be determined.

For example, the above-mentioned N receiving space parameters are determined based on the above-mentioned transmitting space parameters of the M1 ports.

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

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

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

Furthermore, the second communication apparatus 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 indices, the second communication apparatus may perform measurements on the ports corresponding to the N port indices or a part of the N indices. If the N receiving space parameters include the number of ports with a value of N, the second communication apparatus may determine, according to a predefined rule, a corresponding number of ports from the ports that transmit the second reference signal to perform the power transmission of the first reference signal. Measurement.

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

Optionally, the above 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 above 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. Others are the same and will not be repeated here.

By associating the N receiving space parameters with the sending space parameters of the M ports, the first communication device can determine the precoding matrix based on the uplink power information measured by itself and at least one piece of power information reported by the second communication device, thereby eliminating the need for 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.

In the foregoing embodiment, the relationship between the foregoing N and the foregoing M may be any one of the following, which is not specifically limited in the present application.

In addition, the sequence of receiving the first reference signal and sending the second reference signal by the second communication apparatus is not specifically limited.

The sequence of sending the first reference signal and receiving the second reference signal by the first communication apparatus is not specifically limited.

1. N=M

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

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

2. N<M

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

In the scenarios of the following examples, both N<M and N=M can be used.

In an exemplary scenario, the second communication device has 2 transmit antenna ports and 4 receive antenna ports, and does not support SRS antenna switching, then the second communication device uses M=2 ports to transmit 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 both M=2 and N=1.

In another exemplary scenario, the second communication device has 2 transmit antenna ports and 4 receive antenna ports, and supports SRS antenna switching, then the second communication device uses M=2 ports to transmit one SRS for the first time, The second time SRS is sent using another M=2 ports. At this time, the power information measured by the second communication apparatus may be measured based on the 4 ports, or measured based on 2 of the ports (for example, the 2 ports used for the latest SRS transmission from the current power information report) , at this time, N=M, or N<M.

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

In the first manner, the at least one piece of power information is determined according to the maximum value of the power information of the first reference signal corresponding to the N receiving space parameters.

In this manner, the second communication device measures the power information of the first reference signal corresponding to each receiving space parameter according to the N receiving space parameters indicated by the first indication information, and selects the maximum value to determine the at least one power information.

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

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

Exemplarily, if the second communication apparatus measures N pieces of power information according to the N receiving space parameters indicated by the first indication information, the maximum value among the N pieces of power information may be used as the above-mentioned at least one piece of power information.

Determining at least one piece of power information by using the maximum value of the power information of the first reference signal enables the second communication device to select the power information with the best power information measurement quality (for example, the maximum power value) to report, thereby improving the measurement of at least one piece of power information. The accuracy helps to accurately eliminate the influence of the transmission power of the uplink reference signal of the second communication device, so that the precoding matrix is more accurate.

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

In this manner, the second communication device determines, according to the N receiving space parameters indicated by the first indication information, an average value of the power information of the first reference signal corresponding to each receiving space parameter, and determines the at least one of the above-mentioned at least one according to the average value. power information.

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

Optionally, the second communication device may use the obtained average value as the at least one piece of 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 piece of power information.

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

Exemplarily, if the second communication apparatus measures N pieces of power information according to the N receiving space parameters indicated by the first indication information, the average value of the N pieces of power information may be used as the above-mentioned at least one piece of power information.

Determining at least one piece of power information by using the average value of the power information of the first reference signal 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 is helpful to more accurately eliminate the influence of the transmission power of the uplink reference signal of the second communication device, so that the precoding matrix is more accurate.

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

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

Optionally, the second communication device may use the obtained summation value as the above 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 above at least one power information. information.

Exemplarily, if the second communication apparatus measures N pieces of power information according to the N receiving space parameters indicated by the first indication information, the summation value of the N pieces of power information may be used as the above-mentioned at least one piece of power information.

Optionally, in the above three manners, when the second communication device determines the X _DL according to the process corresponding to the above step S204, it may first calculate each of the N receiving space parameters corresponding to the formula (4)-formula (5) respectively. Based on the downlink power information X _{DL of the plurality of receiving ports, the downlink power information X DL of} the plurality of receiving ports corresponding to the N receiving space parameters is further calculated to obtain the X _DL reported to the first communication device.

Taking the above-mentioned first manner 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 formula (4)-formula (5), and then selects each X DL . The maximum value in the _DL , and the maximum value 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 i-th power information is determined according to the i-th receiving space parameter among the K receiving space parameters, and the N receiving space parameters include all For the K pieces of power information, i is an integer greater than or equal to 1 and less than or equal to K.

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

The fourth way can solve the problem caused by the inaccurate amplitude calibration of the multiple transmission ports of the second communication device. For example, the second communication device has two transmit ports and two receive ports, wherein the two receive ports have the same amplitude gain for the received signal, and the two transmit ports have different amplitude gains for the transmit signal. Then, the first communication apparatus needs to obtain respective E _tx /E _srs,l for the two sending ports, where l represents the sending port index, and l=1 or l=2. In order to obtain E _tx /E _srs,1 of each port, the second communication device needs to measure and feed back power information X _DL , ₁ for each receiving port. The first communication device can determine E _tx /E _srs,l according to the foregoing method by measuring X _UL,1 corresponding to the two transmission ports, so as to determine the channel matrix information required for calculating the precoding matrix according to the channel estimation result obtained by the SRS . Optionally, in the above manners, the power information of the first reference signal may be a weighted summation value of the power information on the 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, the problem caused by inaccurate amplitude calibration of multiple transmission spatial parameters of the second communication device can be solved. Taking the sending space parameter as the sending antenna port and the receiving space parameter as the receiving antenna port as an example, 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 through different transmitting ports, the 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 independently measures the power information corresponding to different receiving space parameters and reports it to the first communication device, and at the same time, the first communication device measures the uplink power information corresponding to different transmitting space parameters, the first communication device can pass Correct the problem caused by inaccurate calibration of the transmit power of different transmit ports, eliminate the influence 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 piece of power information according to the instruction of the first communication device.

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

Optionally, after receiving the above-mentioned first configuration information, the second communication apparatus may measure the power information of the first reference signal according to the indication of the above-mentioned first indication information, and send the above-mentioned at least one power information to the first communication apparatus. .

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

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

In an optional manner, the above-mentioned receiver type is used to indicate that the above-mentioned second communication apparatus is a linear receiver or a nonlinear receiver.

In another optional manner, the above receiver type is used to indicate the type of 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 linear receiver is represented by 1 bit. Optionally, 0 represents the MRC receiver, and 1 represents the MMSE-IRC receiver.

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

In yet another optional manner, the above receiver type is used to indicate the 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, the terminal device needs to participate in the iterative process, that is, the terminal device needs to send the SRS multiple times, resulting in a low complexity of the system.

Taking the first communication device as a network device and the second communication device as a terminal device as an example, in this embodiment, the terminal device sends the receiver type to the network device, so that the network device can perform multiple iterations by itself, avoiding the need for the terminal device to perform multiple iterations. The device sends SRS multiple times, which reduces the complexity of the terminal device and greatly improves the iteration speed, so that the performance gain of iterative optimization can be realized.

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

FIG. 4 is a block diagram of a communication device provided by an embodiment of the present application. The device may be a second communication device, or may be a second communication device capable of supporting the second communication device to implement the method provided by the embodiment of the present application. For example, the device may be a device or a chip system in the 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 this embodiment of the present application, the chip system may be composed of chips, or may include chips and other discrete devices.

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

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

A sending module 403, 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 indication information, where the receiving space parameter includes the first Two first antenna parameters of the communication device.

In a possible design, the power information is a parameter determined according to the received power of the signal. The power information may be RSRP, RSRQ, RSSI or received amplitude information, or may 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 on which the second communication apparatus measures the power information.

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

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

In one possible design, the processing module 402 is specifically used to:

The first indication information is sent by the sending module 403 , or the first indication information is received by the receiving module 401 .

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

The at least one power information is determined according to the receiving space parameter indicated by the first indication information, including:

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

In one possible design, the processing module 402 is also used to:

Obtain 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 sending spatial parameter includes a second antenna parameter and/or a sending spatial filtering parameter, and the second antenna parameter includes antenna port information for sending the second reference signal by the second communication apparatus.

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

In an example, the above-mentioned indication of the associated reference signal may be configuration information indicating at least one second reference signal resource, or may also be configuration information indicating at least one second reference signal resource set.

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 receive space parameters are associated with the transmit space parameters of the M ports;

or,

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

In an example, the N receive space parameters are associated with the transmit space parameters of the M ports, including:

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

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

In an example, the N receive space parameters are associated with the transmit space parameters of the M1 ports, including:

The N receiving space parameters are determined based on the sending 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 an example, the at least one power information is determined according to the N receive space parameters, including:

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

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

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

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

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

The at least one piece of 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 a possible design, the receiving module 401 is also used to:

First configuration information is received, where the first configuration information is used to instruct the second communication apparatus to send the at least one power information.

In a possible design, the sending module 403 is also used to:

Send second indication information, where the second indication information is used to indicate the receiver type of the second communication apparatus.

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

In a possible design, the receiving module 401 is also used to:

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

FIG. 5 is a module structure diagram of another communication device provided by 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 by the embodiment of the present application. The device for the function of the device, for example, the device may be a device or a chip system in the 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 this embodiment of the present application, the chip system may be composed of chips, or may include chips and other discrete devices.

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

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

A receiving module 503, configured to receive at least one piece of power information of the first reference signal, where the at least one piece of power information is determined according to a receiving space parameter indicated by the first indication information, where the receiving space parameter includes the first Two first antenna parameters of the communication device.

In a possible design, the power information is a parameter determined according to the received power of the signal. The power information may be RSRP, RSRQ, RSSI or received amplitude information, or may 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 on which the second communication apparatus measures the power information.

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

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

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

The first indication information is sent by the sending module 501 , or the first indication information is received by the receiving module 503 .

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

The at least one power information is determined according to the receiving space parameter indicated by the first indication information, including:

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

In a possible design, the sending module 501 is also used to:

Configuration information of a second reference signal is sent, where the second reference signal includes M ports, and different ports in the M ports have different sending space parameters.

In a possible design, the sending spatial parameter includes a second antenna parameter and/or a sending spatial filtering parameter, and the second antenna parameter includes antenna port information for sending the second reference signal by the second communication apparatus.

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

In an example, the above-mentioned indication of the associated reference signal may be configuration information indicating at least one second reference signal resource, or may also be configuration information indicating at least one second reference signal resource set.

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 receive space parameters are associated with the transmit space parameters of the M ports;

or,

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

In an example, the N receive space parameters are associated with the transmit space parameters of the M ports, including:

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

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

In an example, the N receive space parameters are associated with the transmit space parameters of the M1 ports, including:

The N receiving space parameters are determined based on the sending 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 an example, the at least one power information is determined according to the N receive space parameters, including:

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

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

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

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

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

The at least one piece of 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 a possible design, the sending module 501 is also used to:

Send first configuration information, where the first configuration information is used to instruct the second communication apparatus to send the at least one piece of power information.

In a possible design, the receiving module 503 is also used to:

Second indication information is received, where the second indication information is used to indicate a receiver type of the second communication apparatus.

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

In a possible design, the sending module 501 is also used to:

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

The division of modules in the embodiments of the present application is schematic, and is only a logical function division. In actual implementation, there may be other division methods. In addition, the functional modules in the various embodiments of the present application may be integrated into one processing unit. In the device, it can also exist physically alone, or two or more modules can be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules.

As shown in FIG. 6 , an apparatus 600 provided by 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 function of the second communication device in the method provided in the embodiment of the present application. Wherein, 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 acquire the first indication information, for details, please refer to the detailed description in the method example, which will not be repeated here.

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

The apparatus 600 may also include a communication interface 610 for communicating with other devices through a transmission medium, so that the apparatus used in the apparatus 600 may communicate with other devices. In this 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 the 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 apparatus described in the foregoing method embodiments.

The specific connection medium between the communication interface 610 , the processor 620 , and the memory 630 is not limited in the embodiments of the present application. In the embodiment of the present application, the memory 630, the processor 620, and the communication interface 610 are connected through a bus 640 in FIG. 6. The bus is represented by a thick line in FIG. 6, and the connection between other components is only for schematic illustration. , is not limited. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one 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 provided by 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 may be a device capable of supporting the first communication device to implement the function of the first communication device in the method provided in the embodiment of the present application. Wherein, the device may be a chip system. The apparatus 700 includes at least one processor 720, 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 acquire the first indication information, for details, please refer to the detailed description in the method example, which will not be repeated here.

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

The apparatus 700 may also include a communication interface 710 for communicating with other devices through a transmission medium, so that the apparatus used in the apparatus 700 may communicate with other devices. In this 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 the 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 apparatus described in the foregoing method embodiments.

The specific connection medium between the communication interface 710 , the processor 720 , and the memory 730 is not limited in the embodiments of the present application. In the embodiment of the present application, the memory 730, the processor 720, and the communication interface 710 are connected through a bus 740 in FIG. 7. The bus is represented by a thick line in FIG. 7, and the connection between other components is only for schematic illustration. , is not limited. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, 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 this embodiment 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 can implement or The methods, steps and logic block diagrams disclosed in the embodiments of this application are executed. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

In this embodiment of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or may be a volatile memory (volatile memory), such as random access Access memory (random-access memory, RAM). Memory is, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory in this 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 can 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, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center The transmission is carried out to another website site, computer, server or data center by wired (eg coaxial cable, optical fiber, digital subscriber line, DSL for short) or wireless (eg infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available media that can be accessed by a computer, or a data storage device such as a server, data center, etc. that includes one or more available media integrated. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, digital video disc (DVD)), or semiconductor media (eg, SSD), and 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. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims (29)

1. A method of communication, comprising:

the second communication device acquires first indication information;

the second communication device receiving a first reference signal;

the second communication device transmits at least one piece of power information of the first reference signal, wherein the at least one piece of power information is determined according to the receiving space parameter indicated by the first indication information, and the receiving space parameter comprises a first antenna parameter of the second communication device;

the second communication device transmits a second reference signal, and the receiving space parameter is associated with the transmitting space parameters of the M ports for transmitting the second reference signal.

2. The method of claim 1,

the first antenna parameter includes antenna port information at which the second communication device measures the power information.

3. The method according to claim 1 or 2,

the receiving spatial parameters further comprises receiving spatial filtering parameters.

4. The method according to claim 1 or 2, wherein the second communication device acquires the first indication information, comprising:

and the second communication device sends the first indication information, or the second communication device receives the first indication information.

5. The method according to claim 1 or 2, wherein the first indication information indicates N number of received spatial parameters;

the at least one power information is determined according to the received space parameter indicated by the first indication information, and includes:

the at least one power information is determined from the N receive spatial parameters.

6. The method of claim 5, further comprising:

the second communication device obtains configuration information of a second reference signal, wherein the second reference signal comprises M ports, and sending space parameters of different ports in the M ports are different.

7. The method of claim 6, wherein the first indication information indicates N number of received spatial parameters, and wherein the method comprises:

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

or,

the first indication information is used to indicate M1 ports of the M ports, the N receive space parameters being associated with transmit space parameters of the M1 ports, 1< = M1< = M.

8. The method according to claim 6 or 7, wherein the at least one power information is determined according to the N received spatial parameters, comprising:

the at least one piece of power information is determined according to a maximum value of the power information of the first reference signal corresponding to the N receiving space parameters.

9. The method according to claim 6 or 7, wherein the at least one power information is determined according to the N received spatial parameters, comprising:

the at least one piece of power information is determined according to an average value of the power information of the first reference signals corresponding to the N receiving space parameters.

10. The method according to claim 6 or 7, wherein the at least one power information is determined according to the N received spatial parameters, comprising:

the at least one power information includes K power information, wherein an ith power information is determined according to an ith receive space parameter of K receive space parameters, the N receive space parameters include the K power information, 1< = i < = K.

11. The method of any of claims 1-2 and 6-7, further comprising:

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

12. The method of any of claims 1-2 and 6-7, further comprising:

and the second communication device sends second indication information, wherein the second indication information is used for indicating the receiver type of the second communication device.

13. A method of communication, comprising:

the first communication device acquires first indication information;

the first communication device transmitting a first reference signal;

the first communication device receiving at least one power information of the first reference signal, the at least one power information being determined according to a receiving space parameter indicated by the first indication information, the receiving space parameter including a first antenna parameter of a second communication device receiving the first reference signal;

the first communication device receives a second reference signal, and the receiving space parameters are associated with the transmitting space parameters of the M ports for transmitting the second reference signal.

14. The method of claim 13, wherein the first antenna parameter comprises antenna port information for the second communications device to measure the power information.

15. The method of claim 13 or 14, wherein receiving spatial parameters further comprises receiving spatial filtering parameters.

16. The method according to claim 13 or 14, wherein the first communication device obtains first indication information, comprising:

the first communication device receives the first indication information, or the first communication device sends the first indication information.

17. The method according to claim 13 or 14, wherein the first indication information indicates N number of received spatial parameters;

the at least one power information is determined according to the receiving space parameter indicated by the first indication information, and comprises:

the at least one power information is determined from the N receive spatial parameters.

18. The method of claim 17, further comprising:

the first communication device sends configuration information of a second reference signal, wherein the second reference signal comprises M ports, and sending space parameters of different ports in the M ports are different.

19. The method of claim 18, wherein the first indication information indicates N number of received spatial parameters, comprising:

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

or,

the first indication information is used to indicate M1 ports of the M ports, the N receive space parameters being associated with transmit space parameters of the M1 ports, 1< = M1< = M.

20. The method according to claim 18 or 19, wherein the at least one power information is determined according to the N receive spatial parameters, comprising:

the at least one piece of power information is determined according to a maximum value of the power information of the first reference signal corresponding to the N receiving space parameters.

21. The method according to claim 18 or 19, wherein the at least one power information is determined according to the N receive spatial parameters, comprising:

the at least one piece of power information is determined according to an average value of the power information of the first reference signals corresponding to the N receiving space parameters.

22. The method according to claim 18 or 19, wherein the at least one power information is determined according to the N receive spatial parameters, comprising:

the at least one power information includes K power information, wherein an ith power information is determined according to an ith receive space parameter of K receive space parameters, the N receive space parameters include the K power information, 1< = i < = K.

23. The method of any of claims 13-14 and 18-19, further comprising:

the first communication device sends first configuration information, where the first configuration information is used to instruct the second communication device to report the power information.

24. The method of any of claims 13-14 and 18-19, further comprising:

the first communication device receives second indication information, wherein the second indication information is used for indicating the receiver type of the second communication device.

25. A communications apparatus, comprising: a memory and a processor;

the processor is configured to couple with the memory, read and execute instructions stored in the memory to implement the method of any one of claims 1-12.

26. A communications apparatus, comprising: a memory and a processor;

the processor is coupled to the memory, and reads and executes instructions stored in the memory to implement the method of any one of claims 13-24.

27. A chip system, comprising at least one communication interface, at least one processor, at least one memory, for implementing the method of any one of claims 1 to 12, or for implementing the method of any one of claims 13 to 24.

28. A communication system comprising the communication apparatus of claim 25 and the communication apparatus of claim 26.

29. A computer-readable storage medium, having stored thereon computer instructions, which, when executed by a computer, cause the computer to perform the method of any one of claims 1-12 or cause the computer to perform the method of any one of claims 13-24.

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