WO2023011436A1

WO2023011436A1 - Communication processing method and communication processing apparatus

Info

Publication number: WO2023011436A1
Application number: PCT/CN2022/109582
Authority: WO
Inventors: 高君慧; 葛士斌; 金黄平; 袁一凌; 范利; 张笛笛
Original assignee: 华为技术有限公司
Priority date: 2021-08-05
Filing date: 2022-08-02
Publication date: 2023-02-09
Also published as: CN115941006A

Abstract

Disclosed in the embodiments of the present application are a communication processing method and a communication processing apparatus, which are used for indicating, according to a first reporting sequence, one or more first weighting coefficients corresponding to each spatial layer. The method comprises: a terminal device determining, according to a received channel state information-reference signal (CSI-RS), one or more first weighting coefficients corresponding to each spatial layer, wherein each first weighting coefficient corresponds to one CSI-RS port, and the CSI-RS port is used for sending the CSI-RS; determining a first reporting sequence, wherein the first reporting sequence comprises sequentially reporting the corresponding first weighting coefficients according to index sizes of the CSI-RS ports; and sending channel state information (CSI) to a network device, wherein the CSI comprises first indication information, and the first indication information is used for indicating, according to the first reporting sequence, the one or more first weighting coefficients corresponding to each spatial layer. Therefore, a reporting priority can be determined according to a reporting sequence.

Description

Communication processing method and communication processing device

This application claims the priority of the Chinese patent application with the application number 202110897638.X and the invention title "Communication Processing Method and Communication Processing Device" filed with the China Patent Office on August 5, 2021, the entire contents of which are incorporated herein by reference Applying.

technical field

The present application relates to the communication field, and in particular to a communication processing method and a communication processing device.

Background technique

Multiple input and multiple output (MIMO) technology is the core technology of the long term evolution (LTE) system and the fifth generation (5th generation, 5G) new air interface (new radio, NR). The MIMO technology plays a vital role in the spectrum utilization efficiency of the communication system.

Based on all or part of the downlink channel state information (CSI), precoding (Precoding) technology can effectively improve signal transmission performance and system capacity. For a frequency division duplexing (FDD) system, different frequency bands are used for the uplink and downlink, and the uplink channel cannot be used to obtain the downlink precoding matrix. In an existing wireless communication system, an optimal downlink precoding matrix is generally obtained by feeding back a precoding matrix or a precoding matrix index (precoding matrix index, PMI) from a terminal device.

The base station sends a channel state information-reference signal (channel state information-reference signal, CSI-RS) to a user equipment (user equipment, UE), and the reference signal is used for channel measurement. The UE performs channel estimation according to the reference signal CSI-RS sent by the base station, and then obtains the precoding matrix.

The UE sends the CSI including the PMI to the base station, and the CSI includes an indication of a CSI-RS port selected by the terminal device, an indication of a frequency domain vector, and a weighting coefficient corresponding to the CSI-RS port and the frequency domain vector. If the CSI feedback space allocated by the base station to the UE is insufficient, the terminal device needs to discard part of the information. Therefore, how the UE reports the weighting coefficient is an urgent problem to be solved at present.

Contents of the invention

Embodiments of the present application provide a communication processing method and a communication processing device, which are used for a terminal device to send CSI to a network device. The CSI includes first indication information, and the first indication information is used to indicate the correspondence of each spatial layer in the first reporting sequence. One or more first weighting coefficients of .

The first aspect of the present application provides a communication processing method. It can be understood that the method can be executed by a communication device, and the communication device can be a terminal device, or can also be a chip, a chip system, or a circuit configured in the terminal device; The methods include:

Receive the precoded CSI-RS from the network device; determine one or more first weighting coefficients corresponding to each spatial layer according to the CSI-RS, each first weighting coefficient corresponds to a CSI-RS port, and the CSI-RS The port is used to send the CSI-RS; determine the first reporting order, the first reporting order includes: reporting the corresponding first weighting coefficients in order of the index size of the CSI-RS port; sending CSI to the network device, the CSI includes the first indication information, the first indication information is used to indicate one or more first weighting coefficients corresponding to each spatial layer according to the first reporting sequence.

The above technical solution provides the reporting order of one or more first weighting coefficients corresponding to each spatial layer, that is, the corresponding first weighting coefficients are reported according to the index size order of the CSI-RS port (which can be regarded as a priority order), so that The reporting of one or more first weighting coefficients corresponding to each spatial layer is implemented.

In a possible implementation manner, each first weighting coefficient corresponds to a frequency-domain offset vector, and the frequency-domain offset vector corresponding to each first weighting coefficient is used to determine the frequency-domain offset vector corresponding to each first weighting coefficient. The vector, the first reporting order further includes: the first weighting coefficients corresponding to the same CSI-RS port, and the corresponding first weighting coefficients are reported in order of the index size of the frequency domain offset vector.

The above technical solution provides a reporting order of the first weighting coefficients corresponding to the same CSI-RS port, so as to realize the reporting of one or more first weighting coefficients corresponding to each spatial layer.

In another possible implementation manner, the first reporting order includes: corresponding to the first weighting coefficients of the same CSI-RS port, reporting the corresponding first weighting coefficients according to the index of the frequency domain offset vector from small to large.

The above provides a reporting method of reporting the first weighting coefficients corresponding to the same CSI-RS port according to the index of the frequency domain offset vector from small to large, so that the terminal device reports the corresponding CSI-RS in order (also called priority). The first weighting factor for the port. In this way, the reporting of one or more first weighting coefficients corresponding to each spatial layer is implemented.

In another possible implementation manner, the first reporting order includes: reporting the corresponding first weighting coefficients in ascending order according to the index of the CSI-RS port.

In the above technical solution, because on the network device side, the second weighting coefficient corresponding to a smaller CSI-RS port is larger, and the second weighting coefficient corresponding to a CSI-RS port with a larger index is smaller. The second weighting coefficient is a weight corresponding to the projection of the uplink channel onto the space-frequency basis vector corresponding to the second weighting coefficient. Utilizing the reciprocity between the uplink channel and the downlink channel, on the terminal device side, among the first weighting coefficients corresponding to the P CSI-RS ports, the first weighting coefficient corresponding to the CSI-RS port with a smaller index basically satisfies Larger, the first weighting coefficient corresponding to a CSI-RS port with a larger index is smaller. The larger the first weighting coefficient is, the more important the space-frequency basis vector corresponding to the first weighting coefficient is. Space-frequency basis vectors are used to represent channel information. Therefore, reporting the corresponding first weighting coefficients in ascending order according to the index of the CSI-RS port enables the terminal device to feed back more important channel information to the network device in a limited CSI feedback space.

In another possible implementation, the CSI-RS is sent through P CSI-RS ports; the first P/2 CSI-RS ports in the P CSI-RS ports correspond to the first polarization direction, and the P CSI-RS ports correspond to the first polarization direction. The last P/2 CSI-RS ports in the RS port correspond to the second polarization direction; the first reporting sequence includes: first reporting the first weighting coefficient corresponding to the CSI-RS port X in the first polarization direction, and then reporting the first The first weighting coefficient corresponding to the CSI-RS port Z in the polarization direction;

Wherein, X is an integer greater than or equal to 0 and less than or equal to (P/2-1), Z is equal to P/2+X, P is the number of CSI-RS ports of the network device, and P is an integer greater than or equal to 2, X is the index of port X, and Z is the index of port Z.

The above implementation manner provides a manner of reporting the first weighting coefficient corresponding to the CSI-RS port for the case of multiple polarization directions, which makes the solution more comprehensive.

In another possible implementation, the CSI-RS is sent through P CSI-RS ports; the first P/2 CSI-RS ports in the P CSI-RS ports correspond to the first polarization direction, and the P CSI-RS ports correspond to the first polarization direction. The last P/2 CSI-RS ports in the RS port correspond to the second polarization direction; the first reporting sequence includes: first reporting the first weighting coefficient corresponding to the CSI-RS port X in the first polarization direction, and then reporting the first The first weighting coefficient corresponding to the CSI-RS port Z in the two polarization directions, and then report the first weighting coefficient corresponding to the CSI-RS port W in the first polarization direction, and then report the CSI-RS port W in the second polarization direction The first weighting coefficient corresponding to the RS port K;

Wherein, X is an integer greater than or equal to 0 and less than or equal to (P/2-1), Z is equal to P/2+X, P is the number of CSI-RS ports of the network device, and P is an integer greater than or equal to 2; W is an integer greater than or equal to 0 and less than or equal to (P/2-1), K is equal to P/2+W; X is the index of CSI-RS port X, Z is the index of CSI-RS port Z, and W is The index of the CSI-RS port W, K is the index of the CSI-RS port K, X is not equal to W, and Z is not equal to K;

CSI-RS port X is the first CSI-RS port selected by the terminal device in the first polarization direction, and CSI-RS port Z is the first CSI-RS port selected by the terminal device in the second polarization direction; The CSI-RS port W is the second CSI-RS port selected by the terminal device in the first polarization direction, and the CSI-RS port K is the second CSI-RS port selected by the terminal device in the second polarization direction.

The above implementation method provides for the case of selecting at least two CSI-RS ports for multiple polarization directions and each polarization direction, and the reporting method of the first weighting coefficient corresponding to the CSI-RS port, so as to achieve multiple polarization directions and report the first weighting coefficients corresponding to the at least two CSI-RS ports.

In another possible implementation manner, the first reporting order includes: reporting the corresponding first weighting coefficients in ascending order of the first parameter values P _ri1 (l, i, f) corresponding to the first weighting coefficients;

Among them, the first parameter value P _ri1 (l,i,f)=i _l *v*M+v*f _l +l; l represents the index of the lth spatial layer, and l is greater than or equal to 1 and less than or equal to An integer of v, v is the total number of space layers, and v is an integer greater than or equal to 1;

i _l represents the sequence number of the i-th CSI-RS port among the 2L CSI-RS ports selected by the terminal device on the l-th spatial layer, the sequence number of the i-th CSI-RS port and the index of the i-th CSI-RS port Correspondingly, i _l is an integer greater than or equal to 0 and less than or equal to 2L-1, 2L CSI-RS ports are the total number of CSI-RS ports selected by the terminal device on the lth spatial layer, and L is greater than or equal to 1 and an integer less than or equal to P/2, where P is an integer greater than or equal to 2;

f _l is the serial number of the f-th frequency-domain offset vector among the M frequency-domain offset vectors selected by the terminal device on the l-th spatial layer, and the serial number of the f-th frequency-domain offset vector is the same as that of the f-th frequency-domain offset vector The index corresponding to the shift vector, M represents the total number of frequency domain shift vectors selected by the terminal device on the lth spatial layer, f _l is an integer greater than or equal to 0 and less than or equal to M-1, and M is greater than or equal to 1 an integer of .

It can be seen from this that the greater the first parameter value P _ri1 (l,i,f) corresponding to the first weighting coefficient, the lower the reporting priority of the corresponding first weighting coefficient. In this way, the regulation on the reporting order of the first weighting coefficients is implemented, so that the terminal device reports one or more first weighting coefficients corresponding to each space layer to the network device.

In another possible implementation manner, the first reporting order includes: reporting the corresponding first weighting coefficients in ascending order of the second parameter values P _ri2 (l, i, f) corresponding to the first weighting coefficients;

Among them, P _ri2 (l,i,f)=π(i _l )*v*M+v*f _l +l,

l represents the index of the lth spatial layer, l is an integer greater than or equal to 1 and less than or equal to v, v is the total number of spatial layers, and v is an integer greater than or equal to 1;

i _l represents the sequence number in the i-th CSI-RS port among the 2L CSI-RS ports selected by the terminal device on the l-th space layer, and the sequence number of the i-th CSI-RS port is the same as that of the i-th CSI-RS port The index corresponds, i _l is an integer greater than or equal to 0 and less than or equal to 2L-1, 2L CSI-RS ports are the total number of CSI-RS ports selected by the terminal device on the lth spatial layer, and L is greater than or equal to 1 and an integer less than or equal to P/2, where P is an integer greater than or equal to 2;

f _l is the serial number of the f-th frequency-domain offset vector among the M frequency-domain offset vectors selected by the terminal device on the l-th spatial layer, and the serial number of the f-th frequency-domain offset vector is the same as that of the f-th frequency-domain offset vector The index corresponding to the shift vector, M represents the total number of frequency domain shift vectors selected by the terminal device on the l spatial layer, f _l is an integer greater than or equal to 0 and less than or equal to M-1, and M is greater than or equal to 1 an integer of

Indicates the index of the i-th CSI-RS port.

It can be seen that the larger the second parameter value P _ri2 (l,i,f) corresponding to the first weighting coefficient, the lower the reporting priority of the corresponding first weighting coefficient. In this way, the regulation on the reporting order of the first weighting coefficients is implemented, so that the terminal device reports one or more first weighting coefficients corresponding to each space layer to the network device.

The second aspect of the present application provides a communication processing method. It can be understood that the method can be executed by a communication device, and the communication device can be a network device, or can also be a chip, a chip system or a circuit configured in the network device; The methods include:

Sending the precoded CSI-RS to the terminal device; receiving the CSI from the terminal device; wherein, the CSI includes first indication information, and the first indication information is used to indicate one corresponding to each spatial layer according to the first reporting order or multiple first weighting coefficients, one or more first weighting coefficients are determined according to the CSI-RS, each first weighting coefficient corresponds to a CSI-RS port, and the CSI-RS port is used to send the CSI-RS, the first The reporting order includes: reporting the corresponding first weighting coefficients in order of the index sizes of the CSI-RS ports.

The above technical solution provides the reporting order of one or more first weighting coefficients corresponding to each spatial layer, that is, the corresponding first weighting coefficients are reported according to the index size order of the CSI-RS port (which can be regarded as a priority order), so that The terminal device reports one or more first weighting coefficients corresponding to each space layer.

In another possible implementation manner, the first reporting order includes: corresponding to the first weighting coefficients of the same CSI-RS port, reporting the corresponding first weighting coefficients according to the index of the frequency domain offset vector from small to large. In this implementation manner, a specific reporting manner of the first weighting coefficient corresponding to the same CSI-RS port is provided.

In another possible implementation manner, sending the precoded channel state information reference signal CSI-RS to the terminal device includes: sending the CSI-RS through P CSI-RS ports;

Among them, the first P/2 CSI-RS ports among the P CSI-RS ports correspond to the first polarization direction, and the last P/2 CSI-RS ports among the P CSI-RS ports correspond to the second polarization direction; The first reporting sequence includes: first reporting the first weighting coefficient corresponding to the CSI-RS port X in the first polarization direction, and then reporting the first weighting coefficient corresponding to the CSI-RS port Z in the second polarization direction; wherein, X is an integer greater than or equal to 0 and less than or equal to (P/2-1), Z is equal to P/2+X, P is the number of CSI-RS ports of the network device, and P is an integer greater than or equal to 2, X is the index of port X, and Z is the index of port Z.

The above implementation manner provides a manner of reporting the first weighting coefficient corresponding to the CSI-RS port for the case of multiple polarization directions, which makes the scheme more complete.

i _l represents the sequence number of the i-th CSI-RS port among the 2L CSI-RS ports selected by the terminal device on the l-th spatial layer, the sequence number of the i-th port corresponds to the index of the i-th port, and i _l is greater than Or an integer equal to 0 and less than or equal to 2L-1, 2L CSI-RS ports are the total number of CSI-RS ports selected by the terminal device on the first spatial layer, L is greater than or equal to 1 and less than or equal to P/ An integer of 2, P is an integer greater than or equal to 2;

Among them, P _ri2 (l,i,f)=π(i _l )*v*M+v*f _l +l,

l represents the index of the lth spatial layer, l is an integer greater than or equal to 1 and less than or equal to v, v is the total number of spatial layers of the terminal device, and v is an integer greater than or equal to 1;

f _l is the serial number of the f-th frequency-domain offset vector among the M frequency-domain offset vectors selected by the terminal device on the l-th spatial layer, and the serial number of the f-th frequency-domain offset vector is the same as that of the f-th frequency-domain offset vector The index corresponding to the shift vector, M represents the total number of frequency domain shift vectors selected by the terminal device on the lth spatial layer, f _l is an integer greater than or equal to 0 and less than or equal to M-1, and M is greater than or equal to 1 an integer of

Indicates the index of the i-th port.

The third aspect of the present application provides a communication processing method. It can be understood that the method can be executed by a communication device, and the communication device can be a terminal device, or can also be a chip, a chip system, or a circuit configured in the terminal device; The methods include:

Receive the second indication information from the network device, the second indication information is used to indicate the adjustment parameter of the index selection range of the channel state information reference signal CSI-RS port; determine the strongest coefficient indication (strongest coefficient indication, SCI) according to the adjustment parameter The first indication field used to indicate the index of the CSI-RS port; send the SCI to the network device, and the first indication field in the SCI indicates the index of the CSI-RS port corresponding to the largest first weighting coefficient in the first spatial layer , the largest first weighting coefficient in the first spatial layer is determined according to the CSI-RS sent by the network device.

In the above technical solution, the terminal device receives the adjustment parameter from the network device. The terminal device can determine the index selection range of the CSI-RS port according to the adjustment parameter. That is, the terminal device can narrow down the index selection range of the CSI-RS port by adjusting parameters. In order to reduce the number of bits used to indicate the index of the CSI-RS port in the SCI, thereby reducing the bit overhead of the index used to indicate the CSI-RS port in the SCI. Thereby saving bit resources.

In a possible implementation, the number of bits in the first indication field is

K=α*2L, 2L is the total number of CSI-RS ports selected by the terminal device on the first spatial layer, α is an adjustment parameter, α is greater than 0 and less than or equal to 1, L is greater than or equal to 1 and less than or equal to P /2, and P is an integer greater than or equal to 2.

The above shows the number of bits included in the first indication field in the SCI, and the terminal device narrows down the index selection range of the CSI-RS port by adjusting the parameters. In order to reduce the number of bits used to indicate the index of the CSI-RS port in the SCI, thereby reducing the bit overhead of the index used to indicate the CSI-RS port in the SCI. Thereby saving bit resources.

In another possible implementation manner, the value of α is 1/2, 1/4, or 1.

In another possible implementation manner, the SCI is also used to indicate the index of the frequency-domain offset vector corresponding to the largest first weighting coefficient. In this implementation, the SCI is also used for the index of the frequency domain offset vector corresponding to the largest first weighting factor, so that the SCI can completely indicate the index and frequency domain offset of the CSI-RS port corresponding to the largest first weighting factor. The index of the shift vector. It is beneficial for the network device to determine the largest first weighting coefficient through the SCI.

In another possible implementation, the total number of bits occupied by SCI is

or

Wherein, M is an integer greater than or equal to 1, K=α*2L, 2L is the number of CSI-RS ports selected by the terminal device on the first spatial layer, α is an adjustment parameter, α is greater than 0 and less than or equal to 1, L is an integer greater than or equal to 1 and less than or equal to P/2, and P is an integer greater than or equal to 2.

The above shows the total number of bits occupied by the SCI, and the technical solution of the present application can significantly reduce the number of bits used to indicate the index of the CSI-RS port corresponding to the largest first weighting coefficient in the SCI, reducing the overhead of bit resources.

The fourth aspect of the present application provides a communication processing method. It can be understood that the method can be executed by a communication device, and the communication device can be a network device, or can also be a chip, a chip system, or a circuit configured in the network device; The methods include:

Sending second indication information to the terminal device, the second indication information is used to indicate the adjustment parameter of the index selection range of the CSI-RS port, and the adjustment parameter is used for the terminal device to determine the first indication of the index used to indicate the CSI-RS port in the SCI field; receive the SCI from the terminal device, the first indication field in the SCI indicates the index of the CSI-RS port corresponding to the largest first weighting coefficient in the first spatial layer, and the largest first weighting coefficient in the first spatial layer is according to CSI-RS determined.

In the above technical solution, the network device instructs the terminal device to adjust the parameters. The terminal device can determine the index selection range of the CSI-RS port according to the adjustment parameter. That is, the terminal device can narrow down the index selection range of the CSI-RS port by adjusting parameters. In order to reduce the number of bits used to indicate the index of the CSI-RS port in the SCI, thereby reducing the bit overhead of the index used to indicate the CSI-RS port in the SCI. Thereby saving bit resources.

In another possible implementation manner, the value of α is 1/2, 1/4, or 1.

In another possible implementation, the total number of bits occupied by SCI is

or,

The fifth aspect of the present application provides a communication device, and the communication device includes:

A transceiver module, configured to receive the precoded CSI-RS from the network device;

A processing module, configured to determine one or more first weighting coefficients corresponding to each spatial layer according to the CSI-RS, each first weighting coefficient corresponds to a CSI-RS port, and the CSI-RS port is used to send the CSI-RS ; Determining the first reporting order, the first reporting order includes: reporting the corresponding first weighting coefficients according to the order of the index size of the CSI-RS port;

The transceiver module is further configured to send CSI to the network device, where the CSI includes first indication information, and the first indication information is used to indicate one or more first weighting coefficients corresponding to each spatial layer in a first reporting order.

Wherein, X is an integer greater than or equal to 0 and less than or equal to (P/2-1), Z is equal to P/2+X, P is the number of CSI-RS ports of the network device, and P is greater than or equal to 2 Integer, where X is the index of port X and Z is the index of port Z.

i _l represents the sequence number of the i-th CSI-RS port among the 2L CSI-RS ports selected by the communication device on the l-th spatial layer, the sequence number of the i-th CSI-RS port and the index of the i-th CSI-RS port Correspondingly, i _l is an integer greater than or equal to 0 and less than or equal to 2L-1, 2L CSI-RS ports are the total number of CSI-RS ports selected by the communication device on the lth spatial layer, and L is greater than or equal to 1 and an integer less than or equal to P/2, where P is an integer greater than or equal to 2;

f _l is the serial number of the f-th frequency-domain offset vector among the M frequency-domain offset vectors selected by the communication device on the l-th spatial layer, and the serial number of the f-th frequency-domain offset vector is the same as that of the f-th frequency-domain offset vector corresponds to the index of the shift vector, M represents the total number of frequency domain shift vectors selected by the communication device on the lth spatial layer, f _l is an integer greater than or equal to 0 and less than or equal to M-1, and M is greater than or equal to 1 an integer of .

Among them, P _ri2 (l,i,f)=π(i _l )*v*M+v*f _l +l,

i _l represents the sequence number in the i-th CSI-RS port among the 2L CSI-RS ports selected by the communication device on the l-th spatial layer, and the sequence number of the i-th CSI-RS port is the same as that of the i-th CSI-RS port Corresponding to the index, i _l is an integer greater than or equal to 0 and less than or equal to 2L-1, 2L CSI-RS ports are the total number of CSI-RS ports selected by the communication device on the lth spatial layer, and L is greater than or equal to 1 and an integer less than or equal to P/2, where P is an integer greater than or equal to 2;

f _l is the serial number of the f-th frequency-domain offset vector among the M frequency-domain offset vectors selected by the communication device on the l-th spatial layer, and the serial number of the f-th frequency-domain offset vector is the same as that of the f-th frequency-domain offset vector corresponds to the index of the shift vector, M represents the total number of frequency domain shift vectors selected by the communication device on the lth spatial layer, f _l is an integer greater than or equal to 0 and less than or equal to M-1, and M is greater than or equal to 1 an integer of

Indicates the index of the i-th CSI-RS port.

The sixth aspect of the present application provides a communication device, and the communication device includes:

The transceiver module is configured to send the precoded CSI-RS to the terminal device; receive the CSI from the terminal device; wherein, the CSI includes first indication information, and the first indication information is used to indicate each One or more first weighting coefficients corresponding to the spatial layer, one or more first weighting coefficients are determined according to the CSI-RS, each first weighting coefficient corresponds to a CSI-RS port, and the CSI-RS port is used to send CSI -RS, the first reporting order includes: reporting the corresponding first weighting coefficients in order of the index sizes of the CSI-RS ports.

In another possible implementation manner, the first reporting order includes: corresponding to the first weighting coefficients of the same CSI-RS port, reporting the corresponding first weighting coefficients in ascending order according to the index of the frequency domain offset vector.

In another possible implementation manner, the transceiver module is specifically used for:

Send the CSI-RS through P CSI-RS ports;

Among them, the first P/2 CSI-RS ports among the P CSI-RS ports correspond to the first polarization direction, and the last P/2 CSI-RS ports among the P CSI-RS ports correspond to the second polarization direction;

The first reporting sequence includes: first reporting the first weighting coefficient corresponding to the CSI-RS port X in the first polarization direction, and then reporting the first weighting coefficient corresponding to the CSI-RS port Z in the second polarization direction; wherein, X is an integer greater than or equal to 0 and less than or equal to (P/2-1), Z is equal to P/2+X, P is the number of CSI-RS ports of the network device, and P is an integer greater than or equal to 2, X is the index of port X, and Z is the index of port Z.

Among them, P _ri2 (l,i,f)=π(i _l )*v*M+v*f _l +l,

Indicates the index of the i-th port.

The seventh aspect of the present application provides a communication device, and the communication device includes:

A transceiver module, configured to receive second indication information from the network device, where the second indication information is used to indicate the adjustment parameters of the index selection range of the CSI-RS port;

A processing module, configured to determine a first indication field in the SCI used to indicate the index of the CSI-RS port according to the adjustment parameter;

The transceiver module is also used to send the SCI to the network device, the first indication field in the SCI indicates the index of the CSI-RS port corresponding to the largest first weighting coefficient in the first spatial layer, and the largest first weighting coefficient in the first spatial layer The coefficients are determined according to the CSI-RS sent by the network equipment.

K=α*2L, 2L is the total number of CSI-RS ports selected by the terminal device on the first spatial layer, α is an adjustment parameter, α is greater than 0 and less than or equal to 1, L is greater than or equal to 1 and less than or equal to P/ An integer of 2, P is an integer greater than or equal to 2.

In another possible implementation manner, the value of α is 1/2, 1/4, or 1.

In another possible implementation manner, the SCI is also used to indicate the index of the frequency-domain offset vector corresponding to the largest first weighting coefficient.

In another possible implementation, the total number of bits occupied by SCI is

or,

The eighth aspect of the present application provides a communication device, and the communication device includes:

The transceiver module is configured to send second indication information to the terminal device, the second indication information is used to indicate the adjustment parameter of the index selection range of the CSI-RS port, and the adjustment parameter is used for the terminal device to determine the index used to indicate the CSI-RS port in the SCI The first indication field of the index: receive the SCI from the terminal device, the first indication field in the SCI indicates the index of the CSI-RS port corresponding to the largest first weighting coefficient in the first spatial layer, and the largest first weighting coefficient in the first spatial layer A weighting factor is determined according to the CSI-RS.

In another possible implementation manner, the value of α is 1/2, 1/4, or 1.

In another possible implementation, the total number of bits occupied by SCI is

or,

Wherein, the M is an integer greater than or equal to 1, the K=α*2L, 2L is the number of CSI-RS ports selected by the terminal device on the first spatial layer, α is an adjustment parameter, α is greater than 0 and is less than or equal to 1, L is an integer greater than or equal to 1 and less than or equal to P/2, and P is an integer greater than or equal to 2.

Regarding the above fifth to eighth aspects, the apparatus is a communication device, the transceiver module may be a transceiver, or an input/output interface; the processing module may be a processor.

In another implementation manner, the apparatus is a chip, a chip system or a circuit configured in a communication device. When the device is a chip, chip system or circuit configured in a communication device, the transceiver module may be an input/output interface, interface circuit, output circuit, input circuit, pin or pin on the chip, chip system or circuit. Related circuits and the like; the processing module may be a processor, a processing circuit or a logic circuit and the like.

A ninth aspect of the present application provides a communication device, where the communication device includes: a processor and a memory. Computer programs or computer instructions are stored in the memory, and the processor is used to call and run the computer programs or computer instructions stored in the memory, so that the processor implements any one of the implementation manners of the first aspect or the third aspect.

Optionally, the communication device further includes a transceiver, and the processor is used to control the transceiver to send and receive signals.

A tenth aspect of the present application provides a communication device, where the communication device includes: a processor and a memory. Computer programs or computer instructions are stored in the memory, and the processor is used to call and run the computer programs or computer instructions stored in the memory, so that the processor implements any one of the second aspect or the fourth aspect.

The eleventh aspect of the present application provides a communication device, including a processor and an interface circuit, the processor is configured to communicate with other devices through the interface circuit, and execute the methods described in the above aspects. The processor includes one or more.

A twelfth aspect of the present application provides a communication device, including a processor, configured to be connected to a memory, and used to invoke a program stored in the memory to execute the method described in the above aspects. The memory may be located within the device or external to the device. And the processor includes one or more.

The thirteenth aspect of the present application provides a computer program product including instructions, which is characterized in that, when it is run on a computer, it makes the computer execute any one of any one of the first to fourth aspects. Method to realize.

The fourteenth aspect of the present application provides a computer-readable storage medium, including computer instructions. When the instructions are run on the computer, the computer executes any of the implementation methods of any one of the first to fourth aspects. .

The fifteenth aspect of the present application provides a chip device, including a processor, used to call a computer program or computer instruction in the memory, so that the processor executes any one of the above-mentioned first to fourth aspects. way of realization.

Optionally, the processor is coupled with the memory through an interface.

A sixteenth aspect of the present application provides a communication system, the communication system includes the communication device according to the fifth aspect and the communication device according to the sixth aspect; or, the communication device according to the seventh aspect and the communication device according to the eighth aspect.

It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

Through the above technical solution, it can be known that the precoded CSI-RS from the network device is received; then, one or more first weighting coefficients corresponding to each spatial layer are determined according to the CSI-RS, and each first weighting coefficient corresponds to one CSI-RS port, the CSI-RS port is used to send CSI-RS; determine the first reporting sequence, the first reporting sequence includes: reporting the corresponding first weighting coefficients according to the index size of the CSI-RS port; sending CSI to the network device , the CSI includes first indication information, where the first indication information is used to indicate one or more first weighting coefficients corresponding to each spatial layer in a first reporting sequence. It can be seen that the technical solution of the present application provides the reporting order of one or more first weighting coefficients corresponding to each spatial layer, that is, the corresponding first weighting coefficients are reported in order of the index size of the CSI-RS port, so as to achieve Reporting of one or more first weighting coefficients corresponding to each spatial layer.

Description of drawings

Fig. 1 is a schematic diagram of the communication system of the embodiment of the present application;

FIG. 2 is a schematic diagram of an embodiment of a communication processing method in an embodiment of the present application;

FIG. 3 is a schematic diagram of a reporting sequence of a first weighting coefficient of a communication processing method according to an embodiment of the present application;

4 is a schematic diagram of another reporting sequence of the first weighting coefficient of the communication processing method according to the embodiment of the present application;

5 is a schematic diagram of another reporting sequence of the first weighting coefficient of the communication processing method according to the embodiment of the present application;

6 is a schematic diagram of another reporting sequence of the first weighting coefficient of the communication processing method according to the embodiment of the present application;

7 is a schematic diagram of another reporting sequence of the first weighting coefficient of the communication processing method according to the embodiment of the present application;

FIG. 8 is a schematic diagram of another embodiment of a communication processing method according to an embodiment of the present application;

FIG. 9 is a schematic distribution diagram of an index of a CSI-RS port corresponding to the largest first weighting coefficient in the communication processing method of the embodiment of the present application;

FIG. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application;

FIG. 11 is another schematic structural diagram of a communication device according to an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

FIG. 13 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed ways

Embodiments of the present application provide a communication processing method and a communication device, which are used for a terminal device to send CSI to a network device. The CSI includes first indication information, and the first indication information is used to indicate the corresponding information of each spatial layer according to the first reporting sequence. One or more first weighting coefficients.

Some terms involved in this application are introduced below.

1. Precoding matrix indicator (precoding matrix indicator, PMI): used to indicate the precoding matrix. Wherein, the precoding matrix can be, for example, based on each frequency domain unit of the terminal device (for example, the frequency domain length of a frequency domain unit can be a subband, or a resource block (resource block, RB), or the R times, R<=1, the value of R can be 1 or 1/2) the precoding matrix determined by the channel matrix. The channel matrix may be determined by the terminal device through channel estimation or based on channel reciprocity. However, it should be understood that the specific method for the terminal device to determine the precoding matrix is not limited to the above, and the specific implementation manner may refer to the prior art, and for the sake of brevity, it is not listed here one by one.

For example, the precoding matrix can be obtained by performing singular value decomposition (singular value decomposition, SVD) on the channel matrix or the covariance matrix of the channel matrix, or by performing eigenvalue decomposition (eigenvalue decomposition) on the covariance matrix of the channel matrix. decopomsition, EVD). It should be understood that the manner of determining the precoding matrix listed above is only an example, and should not constitute any limitation to the present application. For the manner of determining the precoding matrix, reference may be made to the prior art, and for the sake of brevity, it is not listed here one by one.

It should be noted that, with the method provided by the embodiment of the present application, the network device can determine the space vector, the frequency domain vector, and the combination coefficient of the space-frequency vector pair used to construct the precoding vector based on the feedback of the terminal device, and then determine the combination coefficient of each frequency domain vector. The precoding matrix corresponding to the unit. The precoding matrix can be directly used for downlink data transmission; it can also go through some beamforming methods, such as including zero forcing (zeroforcing, ZF), regularized zero forcing (regularized zero-forcing, RZF), minimum mean square error (minimum mean -squared error, MMSE), maximize the signal-to-leakage-and-noise ratio (signal-to-leakage-and-noise, SLNR), etc., to obtain the final precoding matrix for downlink data transmission. This application is not limited to this. Unless otherwise specified, the precoding matrix mentioned below may refer to the precoding matrix determined based on the method provided in this application.

It can be understood that the precoding matrix determined by the terminal device can be understood as a precoding matrix to be fed back. The terminal device can indicate the precoding matrix to be fed back through the PMI, so that the network device can restore the precoding matrix based on the PMI. It can be understood that the precoding matrix recovered by the network device based on the PMI may be the same as or similar to the aforementioned precoding matrix to be fed back.

In the downlink channel measurement, the higher the similarity between the precoding matrix determined by the network device and the precoding matrix determined by the terminal device according to the PMI, the more compatible the precoding matrix determined for data transmission with the channel state. Adapted, so it can improve the quality of signal reception.

For example, based on the 17th version port selection (release17 port selection, R17 PS) codebook, the precoding matrix determined by the terminal device can adopt a three-level structure and can be expressed as:

Wherein, W ₁ ∈C ^P*2L is a CSI-RS port selection matrix, P is the number of CSI-RS ports, and 2L is the number of selected CSI-RS ports. W _f ∈ ^{C N*M} is a discrete Fourier transform (discrete fourier transform, DFT) matrix. Among them, N is the number of DFT vectors available for selection, and M is the number of DFT vectors to be selected. W ₂ ∈C ^2L*M is the weighting coefficient matrix, and C is the dimension of the matrix.

2. CSI-RS port: The port is a transmitting antenna identified by the receiving device, or a transmitting antenna that can be distinguished in space. An antenna port can be pre-configured for each virtual antenna, and each virtual antenna can be a weighted combination of multiple physical antennas, and each antenna port can correspond to a reference signal. Therefore, each antenna port can be called a reference signal port, the antenna port where the reference signal CSI-RS is configured becomes a CSI-RS port.

3. Spatial domain vector: or beam vector, spatial domain beam basis vector or spatial domain basis vector. Each element in the airspace vector may represent the weight of each antenna port. Based on the weight of each antenna port represented by each element in the space vector, the signals of each antenna port are linearly superimposed to form a strong signal area in a certain direction in space.

The length of the space vector may be the number N _s of transmit antenna ports in one polarization direction, where N _s ≥ 1, and is an integer. The spatial vector can be, for example, a column vector or a row vector with length N _s . This application is not limited to this.

Optionally, the spatial domain vector is obtained from a discrete Fourier transform (Discrete Fourier Transform, DFT) matrix. Each column vector in the DFT matrix can be called a DFT vector. In other words, the spatial domain vectors can be DFT vectors.

4. Frequency domain unit: a unit of frequency domain resources, which can represent different frequency domain resource granularities. Frequency domain units may include, but are not limited to, subbands (subbands), resource blocks (resource blocks, RBs), subcarriers, resource block groups (resource block groups, RBGs) or precoding resource block groups (precoding resource block groups, PRG) and so on. In addition, the frequency domain length of a frequency domain unit can also be R times the CQI subband, R<=1, the value of R can be 1 or 1/2, or the frequency domain length of a frequency domain unit can also be RB .

In this application, the precoding matrix corresponding to the frequency domain unit may refer to the precoding matrix determined by performing channel measurement and feedback based on the reference signal on the frequency domain unit. The precoding matrix corresponding to the frequency domain unit can be used to precode data subsequently transmitted through the frequency domain unit. Hereinafter, the precoding matrix or precoding vector corresponding to the frequency domain unit may also be simply referred to as the precoding matrix or precoding vector of the frequency domain unit.

5. Frequency domain vector: A vector that can be used to represent the change law of the channel in the frequency domain. Each frequency domain vector can represent a variation rule. Since the signal is transmitted through the wireless channel, it can reach the receiving antenna through multiple paths from the transmitting antenna. Multipath delay leads to frequency selective fading, which is the change of the channel in the frequency domain. Therefore, different frequency-domain vectors can be used to represent the change law of the channel in the frequency domain caused by the time delay on different transmission paths.

The length of the frequency domain vector may be determined by the number of frequency domain units to be reported preconfigured in the reporting bandwidth, or may be determined by the length of the reporting bandwidth, or may be a value predefined by the protocol. This application does not limit the length of the frequency domain vector. Wherein, the reporting bandwidth may, for example, refer to the CSI reporting bandwidth (csi-ReportingBand) carried in the CSI reporting pre-configuration in high-layer signaling (such as radio resource control (radio resource control, RRC) message).

The length of the frequency domain vector u _f can be recorded as N _f , where N _f is a positive integer. The frequency domain vector can be, for example, a column vector or a row vector with length _Nf . This application is not limited to this.

6. Space layer (layer): In MIMO, a space layer can be regarded as a data stream that can be transmitted independently. In order to improve the utilization of spectrum resources and improve the data transmission capability of the communication system, network devices can transmit data to terminal devices through multiple spatial layers.

The number of spatial layers is also the rank of the channel matrix. The terminal device can determine the number of spatial layers according to the channel matrix obtained by channel estimation. The precoding matrix can be determined according to the channel matrix. For example, the precoding matrix may be determined by performing SVD on the channel matrix or the covariance matrix of the channel matrix. In the SVD process, different spatial layers can be distinguished according to the size of the eigenvalues. For example, the precoding vector determined by the eigenvector corresponding to the largest eigenvalue can be associated with the first spatial layer, and the precoding vector determined by the eigenvector corresponding to the smallest eigenvalue can be associated with the Rth spatial layer corresponding to the layer. That is, the eigenvalues corresponding to the first spatial layer to the Rth spatial layer decrease sequentially. To put it simply, the intensity of the R space layers decreases successively from the first space layer to the Rth space layer.

It should be understood that distinguishing different spatial layers based on feature values is only a possible implementation manner, and should not constitute any limitation to the present application. For example, the protocol may also predefine other criteria for distinguishing spatial layers, which is not limited in this application.

7. A space-frequency joint vector, also called a space-frequency base vector, is a vector that can be used to represent the change law of a channel in the joint space-frequency domain. In the embodiment of this application, if the channel is a single-polarization channel, then the dimension of the space-frequency joint vector matrix is ((M ₁ ×M ₂ )×N _sb )×A, and M ₁ is the antenna in the horizontal direction transmitted by the network device The number of ports, M ₂ is the number of antenna ports in the vertical direction transmitted by the network equipment, N _sb is the number of frequency units, and A is the number of paths; it should be understood that if the channel is a dual-polarized channel, then the dimension of the space-frequency joint vector matrix It is (2×(M ₁ ×M ₂ )×N _sb )×A.

Optionally, the space-frequency joint vector may be an eigenvector obtained after SVD of the statistical covariance matrix of the channel h, or may be a DFT vector. The enhanced sparsity of the projection coefficient of the channel on the space-frequency basis vector can improve the accuracy of CSI reconstruction by network equipment, and different polarization directions can use different bases. Compared with using the same base in different polarization directions, the system can be improved. performance.

8. Frequency domain offset vector: The frequency domain vector in the space-frequency joint vector is offset according to the frequency domain offset vector to obtain a new space-frequency joint vector. Compared with the original space-frequency joint vector, the corresponding space vector is the same. The frequency domain vectors are different. The frequency domain offset vector may be a DFT vector.

9. The weighting coefficient, also called the combination coefficient or the projection coefficient, is used to represent the weight of the channel to a space-frequency joint vector. The space-frequency joint vector corresponds to a space-domain vector and a frequency-domain vector. Weighting coefficients include magnitude and phase. Each weighting coefficient can include magnitude and phase. For example, in the weighting coefficient ae ^jθ , a is the amplitude, and θ is the phase. As mentioned above, there is a one-to-one correspondence between the weighting coefficient and the vector pair formed by a spatial domain vector and a frequency domain vector obtained by offsetting a frequency domain offset vector, that is, each weighting coefficient corresponds to a spatial domain vector and a frequency domain vector Offset vectors, or in other words, each weighting coefficient corresponds to a space domain vector and a frequency domain vector.

10. The first weighting factor: the weight of the space-frequency basis vector corresponding to the first weighting factor in the downlink channel between the network device and the terminal device.

11. The second weighting coefficient: the weight of the space-frequency basis vector corresponding to the second weighting coefficient of the uplink channel between the network device and the terminal device.

12. Channel state information (CSI) report (report): In a wireless communication system, the information used to describe the channel properties of the communication link is reported by the receiving end (such as a terminal device) to the sending end (such as a network device). The CSI report may include, but is not limited to, precoding matrix indicator (PMI), rank indicator (rank indicator, RI), channel quality indicator (channel quality indicator, CQI), channel state information reference signal (channel state information reference signal, CSI -RS resource indication (CSI-RS resource indicator, CRI) and layer indicator (layer indicator, LI), etc. The PMI includes the indication of the selected CSI-RS port, the indication of the frequency domain vector, and the corresponding weighting coefficient Reporting, SCI, etc. It should be understood that the specific content of the CSI listed above is only an exemplary description, and should not constitute any limitation to the embodiment of the application. CSI can include one or more of the above-listed items, and can also include other than the above-mentioned Other information used to characterize the CSI than the ones listed is not limited in this embodiment of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: the fifth generation (5th generation, 5G) system or new radio (new radio, NR), long term evolution (long term evolution, LTE) system, LTE frequency Division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunications system, UMTS), mobile communication system after 5G network (for example, 6G mobile communication system), vehicle networking (vehicle to everything, V2X) communication system, etc.

The communication system to which this application applies includes terminal equipment and network equipment. The terminal device can receive the precoded CSI-RS from the network device. The terminal device determines one or more first weighting coefficients corresponding to each spatial layer according to the CSI-RS, each first weighting coefficient corresponds to a CSI-RS port, and the CSI-RS port is used to send the CSI-RS; the terminal device determines the first A reporting sequence, the first reporting sequence includes: reporting the corresponding first weighting coefficients according to the index size of the CSI-RS port; the terminal device sends CSI to the network device, and the CSI includes first indication information, which is used to follow the order of the first indication information A reporting sequence indicates one or more first weighting coefficients corresponding to each spatial layer.

The terminal equipment and network equipment of the present application are introduced below.

The terminal device may be a wireless terminal device capable of receiving network device scheduling and indication information. A wireless terminal device may be a device that provides voice and/or data connectivity to a user, or a handheld device with a wireless connection function, or other processing device connected to a wireless modem.

Terminal equipment, also known as user equipment (UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), etc., includes wireless communication functions (providing voice/data connectivity to users) devices, such as handheld devices with wireless connectivity, or vehicle-mounted devices. At present, examples of some terminal devices are: mobile phone (mobile phone), tablet computer, notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) device, enhanced Augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart grid wireless terminals in transportation safety, wireless terminals in smart city, or wireless terminals in smart home.

A network device may be a device in a wireless network. For example, the network device may be a radio access network (radio access network, RAN) node that connects the terminal device to the wireless network, and may also be called an access network device.

Access network equipment is a device deployed in a wireless access network to provide wireless communication functions for terminal equipment. Non-limiting examples of access network equipment are base stations, and base stations are various forms of macro base stations, micro base stations (also called small cells), relay stations, access points (access point, AP), wearable devices, vehicle-mounted devices wait. The base station may also be a transmission receiving point (transmission and reception point, TRP), a transmission measurement function (transmission measurement function, TMF), etc. Exemplarily, the base station involved in this embodiment of the present application may be a base station in a new radio interface (new radio, NR). Among them, the base station in 5G NR can also be called transmission reception point (transmission reception point, TRP) or transmission point (transmission point, TP) or next generation Node B (next generation Node B, ngNB), or long term evolution (long term The evolved Node B (evolutional NodeB, eNB or eNodeB) in the evolution (LTE) system, in a broad sense, can also be a base band unit (base band unit, BBU), a remote radio unit (remote radio unit, RRU), an active Antenna unit (active antenna unit, AAU), radio head (remote radio head, RRH), centralized unit (centralized unit, CU), distributed unit (distributed unit, DU), positioning node, etc.

FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application. Please refer to FIG. 1 , the communication system shown in FIG. 1 includes network equipment and terminal equipment. A communication system includes one or more network devices and one or more terminal devices. In the communication system, UE1 to UE6 can communicate with network devices. Meanwhile, UE4, UE5 and UE6 can also form a communication system. For example, the network device can send downlink information to UE5, and UE5 can send downlink information to UE4 or UE6. Optionally, the communication system shown in FIG. 1 may be an LTE system, or a 5G mobile communication system, or a mobile communication system after a 5G network (for example, a 6G mobile communication system).

In the 16th version port selection (release16 port selection, R16 PS) codebook, the terminal device determines the frequency domain vector corresponding to the largest first weighting coefficient. The terminal device reports the first weighting coefficient of the frequency domain vector corresponding to the largest first weighting coefficient in ascending order according to the index of the space domain vector. Since the values of the first weighting coefficients corresponding to the adjacent frequency domain vectors around the frequency domain vector corresponding to the largest first weighting coefficient are relatively large, the terminal device then reports the The first weighting coefficients corresponding to the adjacent frequency domain vectors. In the design of the R17PS codebook, the terminal device cannot select a frequency domain vector from the complete set of frequency domain vectors, but selects from N frequency domain offset vectors indicated by the network device to the terminal device, where N is greater than or equal to 1 integer. Each of the N frequency-domain offset vectors is used to determine a corresponding frequency-domain vector. Since the value of N is small, it is not obvious that the values of the first weighting coefficients corresponding to the adjacent frequency domain offset vectors around the frequency domain offset vector corresponding to the largest first weighting coefficient are relatively large. Therefore, in the codebook of R16 above, the order in which the terminal device reports the first weighting coefficient is not applicable to the design of the codebook of R17.

Therefore, this application proposes a communication processing method, which specifically includes: the terminal device sends CSI to the network device, and the CSI includes first indication information, and the first indication information is used to indicate one or more information corresponding to each spatial layer according to the first reporting order. For the first weighting coefficients, the first reporting order includes: reporting the corresponding first weighting coefficients in order of the index sizes of the CSI-RS ports. In this way, the reporting of one or more first weighting coefficients corresponding to each spatial layer is realized. In addition, the terminal device reports the corresponding first weighting coefficients according to the index of the CSI-RS port in ascending order, so that the terminal device can feed back more important channel information to the network device in a limited CSI feedback space.

Before introducing the embodiment shown in FIG. 2 , the serial numbers of the CSI-RS ports and the relationship between the index of the CSI-RS ports and the serial numbers of the CSI-RS ports are firstly introduced. The network device sends the CSI-RS through P CSI-RS ports, where P is an integer greater than or equal to 2. Each of the P CSI-RS ports has a corresponding index. For example, in this application, in port Y, Y refers to the index of port Y. 2L CSI-RS ports selected by the terminal device on each spatial layer, where L is an integer greater than or equal to 1 and less than or equal to P/2. The terminal device redefines the 2L CSI-RS ports according to the relative positional relationship of the 2L CSI-RS ports in the P CSI-RS ports (that is, the front and rear positional relationship of the 2L CSI-RS ports in the P CSI-RS ports). The ports are sorted to obtain the serial number of each CSI-RS port in the 2L CSI-RS ports. Therefore, it can be understood that there is a corresponding relationship between the index of the CSI-RS port and the sequence number of the CSI-RS port.

For example, the terminal device selects 2L CSI-RS ports on each spatial layer, and the 2L CSI-RS ports are: CSI-RS port 0, CSI-RS port 2, CSI-RS port 3, and CSI-RS port P/2, CSI-RS port P/2+2, and CSI-RS port P/2+3. The index of CSI-RS port 0 is 0, the index of CSI-RS port 2 is 2, the index of CSI-RS port 3 is 3, the index of CSI-RS port P/2 is P/2, and the index of CSI-RS port P/ The index of 2+2 is P/2+2, and the index of CSI-RS port P/2+3 is P/2+3. The terminal device reorders the 2L CSI-RS ports to obtain the serial number of each CSI-RS port in the 2L CSI-RS ports. Among them, the serial number of CSI-RS port 0 is 0, the serial number of CSI-RS port 2 is 1, the serial number of CSI-RS port 3 is 2, the serial number of CSI-RS port P/2 is 3, and the serial number of CSI-RS port P/ The serial number of 2+2 is 4, and the serial number of CSI-RS port P/2+3 is 5.

The serial number of the frequency domain offset vector and the relationship between the index of the frequency domain offset vector and the serial number of the frequency domain offset vector are introduced below. The network device indicates N frequency domain offset vectors to the terminal device, each of the N frequency domain offset vectors has a corresponding index, and N is an integer greater than or equal to 1. The terminal device selects M frequency domain offset vectors on each spatial layer. The terminal device redefines the The M frequency domain offset vectors are sorted to obtain the serial number of each frequency domain offset vector in the M frequency domain offset vectors. Therefore, it can be understood that there is a corresponding relationship between the index of the frequency domain offset vector and the serial number of the frequency domain offset vector, and M is an integer greater than or equal to 1 and less than or equal to N.

For example, the terminal device selects two frequency-domain offset vectors on one spatial layer, which are the frequency-domain offset vector f0 and the frequency-domain offset vector f2. The index of the frequency domain offset vector f0 is 0, and the index of the frequency domain offset vector f2 is 2. The terminal device reorders the two frequency domain offset vectors according to the relative positional relationship of the two frequency domain offset vectors among the N frequency domain offset vectors, to obtain The sequence number of the field offset vector. Wherein, the serial number of the frequency domain offset vector f0 is 0, and the serial number of the frequency domain offset vector f2 is 1.

The technical solutions of the present application are described below in combination with specific embodiments.

FIG. 2 is a schematic diagram of an embodiment of a communication processing method according to an embodiment of the present application. Referring to Figure 2, communication processing methods include:

201. The network device sends the precoded CSI-RS to the terminal device. Correspondingly, the terminal device receives the precoded CSI-RS from the network device.

The network device performs precoding processing on the CSI-RSs on the P CSI-RS ports to obtain precoded CSI-RSs respectively corresponding to the P CSI-RS ports. The network device sends the precoded CSI-RSs respectively corresponding to the P CSI-RS ports to the terminal device. P is an integer greater than or equal to 2.

202. The terminal device determines one or more first weighting coefficients corresponding to each spatial layer according to the CSI-RS.

Wherein, each first weighting coefficient corresponds to a CSI-RS port and a frequency domain vector, and the CSI-RS port is used for sending the CSI-RS. For example, the first weighting coefficient corresponds to CSI-RS port 0, indicating that the first weighting coefficient is a weighting coefficient determined by the terminal device according to the CSI-RS of the CSI-RS port 0.

Optionally, each first weighting coefficient corresponds to a frequency domain offset vector, and the frequency domain offset vector is used to determine a frequency domain vector corresponding to each first weighting coefficient.

In some implementations, each first weighting coefficient corresponds to a space-frequency joint vector. The first weighting coefficient is the weight of the space-frequency joint vector corresponding to the first weighting coefficient in the downlink channel between the network device and the terminal device.

Wherein, the downlink channel is determined by the terminal device according to the CSI-RS. Each space-frequency joint vector corresponds to a space-domain vector and a frequency-domain vector. The frequency domain vector corresponding to the space-frequency joint vector corresponding to the first weighting coefficient is also referred to as the frequency domain vector corresponding to the first weighting coefficient. For the space-frequency joint vector, please refer to the previous introduction.

Optionally, the above step 202 will be described below in conjunction with steps 202a to 202d.

202a. The terminal device determines P*N first weighting coefficients corresponding to each spatial layer according to the precoded CSI-RS corresponding to the P CSI-RS ports and the N frequency domain offset vectors respectively.

Wherein, the N frequency domain offset vectors may be indicated by the network device to the terminal device, and N is an integer greater than or equal to 1. Each of the P*N first weighting coefficients corresponds to a CSI-RS port and a frequency domain offset vector. The frequency-domain offset vector corresponding to each first weighting coefficient is used to determine a frequency-domain vector corresponding to each first weighting coefficient. Among the P*N first weighting coefficients, the CSI-RS ports corresponding to different first weighting coefficients are different, and/or, the frequency domain offset vectors corresponding to different first weighting coefficients are different.

For example, as shown in Figure 3, on each spatial layer of the terminal device, the CSI-RS port 0 and the frequency domain offset vector f0 correspond to a first weighting coefficient, and the CSI-RS port 0 and the frequency domain offset vector f1 also Corresponding to a first weighting coefficient, the CSI-RS port 0 and the frequency domain offset vector f2 also correspond to a first weighting coefficient. By analogy, it can be known that the terminal device may determine P*N first weighting coefficients corresponding to each spatial layer.

202b. The terminal device selects 2L CSI-RS ports from the P CSI-RS ports.

In some implementation manners, the terminal device may average the first weighting coefficients corresponding to the same CSI-RS port among the P*N first weighting coefficients to obtain the first weighting coefficient corresponding to each CSI-RS port among the P CSI-RS ports. An average of the weighting coefficients. The terminal device selects 2L CSI-RS ports with the largest average value of the corresponding first weighting coefficients from the P CSI-RS ports, L is an integer greater than or equal to 1 and less than or equal to P/2, and P is greater than or equal to Integer of 2.

For example, as shown in Figure 3, 2L is equal to 6, and the terminal device determines CSI-RS port 0, CSI-RS port 2, CSI-RS port 3, CSI-RS port P/2, and CSI-RS port P/2+2 And the average value of the first weighting coefficients respectively corresponding to the CSI-RS ports P/2+3 is larger than the average value of the first weighting coefficients corresponding to other CSI-RS ports. Therefore, the 2L CSI-RS ports are: CSI-RS port 0, CSI-RS port 2, CSI-RS port 3, CSI-RS port P/2, CSI-RS port P/2+2, CSI-RS port Port P/2+3.

Step 202c, the terminal device selects M frequency domain offset vectors from N frequency domain offset vectors.

Wherein, M is an integer greater than or equal to 1 and less than or equal to N, and N is an integer greater than or equal to 1.

In some implementation manners, the terminal device may average the first weighting coefficients corresponding to the same frequency domain offset vector among the P*N first weighting coefficients to obtain each frequency domain offset vector among the N frequency domain offset vectors The average value of the corresponding first weighting coefficient. The terminal device selects M frequency-domain offset vectors corresponding to the largest average value of the first weighting coefficients from the N frequency-domain offset vectors.

For example, as shown in FIG. 3, M is 2. The terminal device determines that average values of the first weighting coefficients respectively corresponding to the frequency-domain offset vector f0 and the frequency-domain offset vector f2 are larger than average values of first weighting coefficients corresponding to other frequency-domain offset vectors. Therefore, the M frequency-domain offset vectors are respectively: a frequency-domain offset vector f0 and a frequency-domain offset vector f2.

202c. The terminal device determines 2L*M first weighting coefficients from the P*N first weighting coefficients corresponding to each spatial layer according to the 2L CSI-RS ports and the M frequency domain offset vectors.

Wherein, the 2L*M first weighting coefficients include a first weight corresponding to any one of the 2L CSI-RS ports and any one of the M frequency domain offset vectors. coefficient.

202d. The terminal device determines one or more first weighting coefficients corresponding to each spatial layer according to the 2L*M first weighting coefficients.

Specifically, the network device indicates to the terminal device the selection parameter β, where β is greater than 0 and less than or equal to 1. The terminal device selects 2L*M*β largest first weighting coefficients from the 2L*M first weighting coefficients as one or more first weighting coefficients corresponding to each spatial layer. The 2L*M*β largest first weighting coefficients are used as the first weighting coefficients reported by the terminal device.

For example, β is 3/4, and the terminal device may select 2L*M*3/4 largest first weighting coefficients from 2L*M first weighting coefficients. For example, β is 1, and the terminal device may use the 2L*M first weighting coefficients as one or more first weighting coefficients corresponding to each spatial layer.

For example, as shown in FIG. 3 , β is 1, and the terminal device uses the selected 12 first weighting coefficients as one or more first weighting coefficients corresponding to each spatial layer. The 2L CSI-RS ports are: CSI-RS port 0, CSI-RS port 2, CSI-RS port 3, CSI-RS port P/2, CSI-RS port P/2+2, CSI-RS port P /2+3. The M frequency domain offset vectors are frequency domain offset vector f0 and frequency domain offset vector f2 respectively. Therefore, the 2L*M first weighting coefficients include 12 first weighting coefficients. The 12 first weighting coefficients are respectively: the first weighting coefficient corresponding to CSI-RS port 0 and the frequency domain offset vector f0, the first weighting coefficient corresponding to CSI-RS port 0 and the frequency domain offset vector f2, and the CSI-RS The first weighting coefficient corresponding to RS port 2 and frequency domain offset vector f0, the first weighting coefficient corresponding to CSI-RS port 2 and frequency domain offset vector f2, and the first weighting coefficient corresponding to CSI-RS port 3 and frequency domain offset vector f0 The first weighting coefficient, the first weighting coefficient corresponding to the CSI-RS port 3 and the frequency domain offset vector f2, the first weighting coefficient corresponding to the CSI-RS port P/2 and the frequency domain offset vector f0, and the CSI-RS port P /2 and the first weighting coefficient corresponding to the frequency domain offset vector f2, the CSI-RS port P/2+2 and the first weighting coefficient corresponding to the frequency domain offset vector f0, the CSI-RS port P/2+2 and the frequency The first weighting coefficient corresponding to the domain offset vector f2, the first weighting coefficient corresponding to the CSI-RS port P/2+3 and the frequency domain offset vector f0, and the CSI-RS port P/2+3 and the frequency domain offset The first weighting coefficient corresponding to the vector f2.

203. The terminal device determines a first reporting sequence.

Wherein, the first reporting order includes: reporting the corresponding first weighting coefficients in order of the index sizes of the CSI-RS ports.

In some embodiments, the first reporting order includes: reporting the corresponding first weighting coefficients in ascending order according to the index of the CSI-RS port.

For example, as shown in FIG. 3 , the index of CSI-RS port 0 is 0, and the index of CSI-RS port 2 is 2. Therefore, the terminal device may first report the first weighting coefficient corresponding to CSI-RS port 0 (including the first weighting coefficient corresponding to CSI-RS port 0 and frequency domain offset vector f0 and the first weighting coefficient corresponding to CSI-RS port 0 and frequency domain offset vector The first weighting coefficient corresponding to f2), and then report the first weighting coefficient corresponding to CSI-RS port 2 (including the first weighting coefficient corresponding to CSI-RS port 2 and frequency domain offset vector f0 and the first weighting coefficient corresponding to CSI-RS port 2 and frequency domain offset vector domain offset vector f2 corresponding to the first weighting coefficient).

It should be noted that, optionally, the terminal device may also report one or more first weighting coefficients corresponding to each spatial layer in order of the sequence numbers of the CSI-RS ports, which is not limited in this application. For related introductions about serial numbers of CSI-RS ports, please refer to the aforementioned related introductions. In the following, the technical solution of the present application will be introduced by taking the terminal device reporting one or more first weighting coefficients corresponding to each spatial layer in sequence according to the size of the CSI-RS port index as an example. The network side and the terminal side can align the index of the CSI-RS port through a default rule, which can be realized by using the existing technology, which is not limited in this application.

In some implementations, each first weighting coefficient corresponds to a frequency-domain offset vector, and the frequency-domain offset vector corresponding to each first weighting coefficient is used to determine a frequency-domain vector corresponding to each first weighting coefficient. The first reporting order further includes: the first weighting coefficients corresponding to the same CSI-RS port, and reporting the corresponding first weighting coefficients in order of the index size of the frequency domain offset vector.

Optionally, the first reporting order includes: the first weighting coefficients corresponding to the same CSI-RS port, and reporting the corresponding first weighting coefficients according to the index of the frequency domain offset vector from small to large.

For example, as shown in FIG. 3 , the index of the frequency domain offset vector f0 is 0, and the index of the frequency domain offset vector f2 is 2. Therefore, among the first weighting coefficients corresponding to port 0, the terminal device may first report the first weighting coefficient corresponding to the frequency domain offset vector f0, and then report the first weighting coefficient corresponding to the frequency domain offset vector f2. As shown in FIG. 3 , the terminal device uses the selected 12 first weighting coefficients as one or more first weighting coefficients corresponding to each spatial layer. For the specific reporting sequence, please refer to the number in the box corresponding to the CSI-RS port and frequency domain offset vector in Figure 3. The number in the box can be understood as the CSI-RS port and frequency domain offset vector corresponding to the box The reporting sequence of the corresponding first weighting coefficient.

The above describes the reporting order of the first weighting coefficients corresponding to each spatial layer. Two possible implementation manners of the reporting order of one or more first weighting coefficients corresponding to different spatial layers are introduced below.

Implementation 1: the first reporting order includes: reporting the corresponding first weighting coefficients in ascending order of the first parameter values P _ri1 (l, i, f) corresponding to the first weighting coefficients. Wherein, the first parameter value P _ri1 (l, i, f) is represented by the following formula 1:

P _ri1 (l,i,f)=i _l *v*M+v*f _l +l Formula 1

l represents the index of the lth spatial layer, l is an integer greater than or equal to 1 and less than or equal to v, v is the total number of spatial layers, and v is an integer greater than or equal to 1.

i _l represents the sequence number of the i-th CSI-RS port among the 2L CSI-RS ports selected by the terminal device on the l-th spatial layer, the sequence number of the i-th CSI-RS port and the index of the i-th CSI-RS port Correspondingly, i _l is an integer greater than or equal to 0 and less than or equal to 2L-1, 2L CSI-RS ports are the total number of CSI-RS ports selected by the terminal device on the lth spatial layer, and L is greater than or equal to 1 and an integer less than or equal to P/2, where P is an integer greater than or equal to 2. For the serial number of the CSI-RS port, please refer to the related introduction above.

f _l is the serial number of the f-th frequency-domain offset vector among the M frequency-domain offset vectors selected by the terminal equipment on the l-th spatial layer, and the serial number of the f-th frequency-domain offset vector is the same as that of the f-th frequency-domain offset vector The index corresponding to the shift vector, M represents the total number of frequency domain shift vectors selected by the terminal device on the lth spatial layer, f _l is an integer greater than or equal to 0 and less than or equal to M-1, and M is greater than or equal to 1 an integer of . For the serial number of the frequency domain offset vector, please refer to the related introduction mentioned above.

It should be noted that, in the above formula 1, if the CSI-RS port selected by the terminal device in each spatial layer is the same, then i _l can be expressed as i, that is, it is not necessary to distinguish the CSI-RS port selected by the terminal device in which spatial layer serial number. If the frequency-domain offset vectors selected by the terminal equipment at each spatial layer are the same, f _l can be expressed as f. That is, there is no need to distinguish in which spatial layer the terminal device selects the frequency domain offset vector.

In the above formula 1, the larger the first parameter value P _ri1 (l,i,f), the lower the reporting priority of the corresponding first weighting coefficient.

The reporting sequence shown in FIG. 4 is exemplified below in conjunction with the above formula 1.

Referring to FIG. 4 , the terminal device includes two space layers, which are space layer 1 and space layer 2 respectively. The terminal device selects 12 first weighting coefficients on space layer 1, and selects 12 first weighting coefficients on space layer 2. The terminal device may determine the first parameter value corresponding to each first weighting coefficient through the foregoing formula 1. Specifically, as shown in Figure 4, the terminal device calculates according to the above formula 1: the first weighting coefficient P _ri1 (1,0,0) corresponding to the CSI-RS port 0 on the spatial layer 1 and the frequency domain offset vector f0 is 1 , CSI-RS port 0 on spatial layer 1 and the first weighting coefficient P _ri1 (1,0,1) corresponding to frequency domain offset vector f2 is 3, CSI-RS port 0 on spatial layer 2 and frequency domain The P _ri1 (2,0,0) of the first weighting coefficient corresponding to the offset vector f0 is 2, and the P _ri1 of the first weighting coefficient corresponding to the CSI-RS port 0 on the spatial layer 2 and the frequency domain offset vector f4 ( 2,0,1) is 4. The P _ri1 (1,1,0) of the first weighting coefficient corresponding to the CSI-RS port 2 on the spatial layer 1 and the frequency domain offset vector f0 is 5, and the CSI-RS port 2 on the spatial layer 1 and the frequency domain offset vector The P _ri1 (1,1,1) of the first weighting coefficient corresponding to f4 is 7, and the P _ri1 (2,1,1, 0) is 6, and P _ri1 (2,1,1) of the first weighting coefficient corresponding to the CSI-RS port 2 on the spatial layer 2 and the frequency domain offset vector f4 is 8. Since the greater the value of the first parameter corresponding to the first weighting coefficient is, the lower its reporting priority is. Therefore, the terminal device first reports the first weighting coefficient corresponding to the CSI-RS port 0 on the spatial layer 1 and the frequency domain offset vector f0, and then reports the CSI-RS port 0 on the spatial layer 2 corresponding to the frequency domain offset vector f0 Then report the first weighting coefficient corresponding to the CSI-RS port 0 of the spatial layer 1 and the frequency domain offset vector f2, and then report the corresponding CSI-RS port 0 of the spatial layer 2 and the frequency domain offset vector f4 The first weighting coefficient of , and so on. For the specific reporting sequence, please refer to the sequence number in the box corresponding to the CSI-RS port and frequency domain offset vector in Figure 4. The sequence number in the box can be understood as the CSI-RS port and frequency domain offset vector corresponding to the box The reporting sequence of the corresponding first weighting coefficient.

Implementation manner 2. The first reporting order includes: reporting the corresponding first weighting coefficients in ascending order of the second parameter values P _ri2 (l, i, f) corresponding to the first weighting coefficients. Wherein, the second parameter value P _ri2 (l, i, f) can be expressed as the following formula 2:

P _ri2 (l,i,f)=π(i _l )*v*M+v*f _l +l Formula 2

However, π(i _l ) is represented by Equation 3 below.

i _l represents the sequence number of the i-th CSI-RS port among the 2L CSI-RS ports selected by the terminal device on the l-th spatial layer, the sequence number of the i-th CSI-RS port and the index of the i-th CSI-RS port Correspondingly, i _l is an integer greater than or equal to 0 and less than or equal to 2L-1, 2L CSI-RS ports are the total number of CSI-RS ports selected by the terminal device on the lth spatial layer, and L is greater than or equal to 1 and an integer less than or equal to P/2, where P is an integer greater than or equal to 2. For the serial number of the CSI-RS port, please refer to the related introduction mentioned above.

Indicates the index of the i-th CSI-RS port.

For example, as shown in Figure 5, the terminal device selects 6 CSI-RS ports on the 1st spatial layer, which are: CSI-RS port 0, CSI-RS port 2, CSI-RS port 3, and CSI-RS port P/2, CSI-RS port P/2+2, and CSI-RS port P/2+3. Then, for CSI-RS port 0,

is 0. For CSI-RS port 2,

for 2. For CSI-RS port 3,

for 3. For CSI-RS port P/2,

is P/2. For CSI-RS port P/2+2,

It is P/2+2. For CSI-RS port P/2+3,

It is P/2+3.

In the above formula 1, the larger the second parameter value P _ri2 (l,i,f), the lower the reporting priority of the corresponding first weighting coefficient.

The reporting sequence shown in FIG. 5 is exemplified below in conjunction with the above formula 1.

Referring to FIG. 5 , the terminal device includes two space layers, which are space layer 1 and space layer 2 respectively. The terminal device selects 12 first weighting coefficients on space layer 1, and selects 12 first weighting coefficients on space layer 2. The terminal device may determine the second parameter value corresponding to each first weighting coefficient through the foregoing formula 2. Specifically as shown in FIG. 5 , for example, P is 32, M=2, and N=4. The terminal device calculates according to the above formula 2: the first weighting coefficient P _ri2 (1,0,0) corresponding to the CSI-RS port 0 on the space layer 1 and the frequency domain offset vector f0 is 1, and the CSI on the space layer 1 - The P _ri2 (1,0,1) of the first weighting coefficient corresponding to RS port 0 and frequency domain offset vector f2 is 3, and the first weight coefficient corresponding to CSI-RS port 0 on spatial layer 2 and frequency domain offset vector f0 The P _ri2 (2,0,0) of a weighting coefficient is 2, and the P _ri2 (2,0,1) of the first weighting coefficient corresponding to the CSI-RS port 0 on the spatial layer 2 and the frequency domain offset vector f4 is 4. The P _ri2 (1,3,0) of the first weighting coefficient corresponding to the CSI-RS port P/2 on the spatial layer 1 and the frequency domain offset vector f0 is 5, and the CSI-RS port P/2 and the frequency domain offset vector on the spatial layer 1 The P _ri2 (1,3,1) of the first weighting coefficient of the domain offset vector f2 is 7, and the P _ri2 of the first weighting coefficient corresponding to the CSI-RS port P/2 on the spatial layer 2 and the frequency domain offset vector f0 (2,3,0) is 6, and P _ri2 (2,3,2) of the first weighting coefficient corresponding to the CSI-RS port P/2 on spatial layer 2 and the frequency domain offset vector f4 is 8. Since the value of the second parameter corresponding to the first weighting coefficient is larger, the priority of its reporting is lower. Therefore, the terminal device first reports the first weighting coefficient corresponding to the CSI-RS port 0 on the spatial layer 1 and the frequency domain offset vector f0, and then reports the CSI-RS port 0 on the spatial layer 2 corresponding to the frequency domain offset vector f0 Then report the first weighting coefficient corresponding to the CSI-RS port 0 of the spatial layer 1 and the frequency domain offset vector f2, and then report the corresponding CSI-RS port 0 of the spatial layer 2 and the frequency domain offset vector f4 Then report the first weighting coefficient corresponding to the CSI-RS port P/2 on the spatial layer 1 and the frequency domain offset vector f0, and then report the CSI-RS port P/2 on the spatial layer 2 and the frequency domain offset vector The first weighting coefficient corresponding to the shift vector f0, and so on. For the specific reporting order, please refer to the number in the box corresponding to the CSI-RS port and frequency domain offset vector in Figure 5. The number in the box can be understood as the CSI-RS port and frequency domain offset vector corresponding to the box The reporting sequence of the corresponding first weighting coefficient.

In some embodiments, the first P/2 CSI-RS ports among the P CSI-RS ports correspond to the first polarization direction, and the last P/2 CSI-RS ports among the P CSI-RS ports correspond to the second polarization direction. direction of polarization.

In a possible implementation manner, for one or more first weighting coefficients corresponding to each spatial layer in different polarization directions, the first parameter values corresponding to the first weighting coefficients are reported in ascending order.

For example, as shown in FIG. 6 , the spatial layer 1 of the terminal device is taken as an example for introduction. CSI-RS port 0 to CSI-RS port P/2-1 correspond to the first polarization direction, and CSI-RS port P/2 to CSI-RS port P-1 correspond to the second polarization direction. For the first polarization direction and the second polarization direction, the terminal device may determine first parameter values corresponding to the 12 first weighting coefficients corresponding to spatial layer 1. Then, the terminal device reports the corresponding first weighting coefficients in ascending order of the first parameter values. For example, the terminal device may first report the first weighting coefficient corresponding to the CSI-RS port 0 on the spatial layer 1 and the frequency domain offset vector f0, and then report the first weighting coefficient corresponding to the CSI-RS port 0 on the spatial layer 1 and the frequency domain offset vector f2 The first weighting coefficient, and then report the first weighting coefficient corresponding to the CSI-RS port 2 on the spatial layer 1 and the frequency domain offset vector f0, and then report the correspondence between the CSI-RS port 2 on the spatial layer 1 and the frequency domain offset vector f2 The first weighting coefficient of , and so on. For the specific reporting order, please refer to the number in the box corresponding to the CSI-RS port and frequency domain offset vector in Figure 6. The number in the box can be understood as the CSI-RS port and frequency domain offset vector corresponding to the box The reporting sequence of the corresponding first weighting coefficient.

In another possible implementation manner, for one or more first weighting coefficients corresponding to each spatial layer in different polarization directions, the second parameter values corresponding to the first weighting coefficients are reported in ascending order.

For example, as shown in FIG. 7 , the spatial layer 1 of the terminal device is taken as an example for introduction. CSI-RS port 0 to CSI-RS port P/2-1 correspond to the first polarization direction, and CSI-RS port P/2 to CSI-RS port P-1 correspond to the second polarization direction. For the first polarization direction and the second polarization direction, the terminal device may determine the second parameter values corresponding to the 12 first weighting coefficients corresponding to spatial layer 1. Then, the terminal device reports the corresponding first weighting coefficients in ascending order of the second parameter values. The terminal device may first report the first weighting coefficient corresponding to the CSI-RS port 0 on the spatial layer 1 and the frequency domain offset vector f0, and then report the first weighting coefficient corresponding to the CSI-RS port 0 on the spatial layer 1 and the frequency domain offset vector f2. The weighting coefficient, and then report the first weighting coefficient corresponding to the CSI-RS port P/2 on the spatial layer 1 and the frequency domain offset vector f0, and then report the CSI-RS port P/2 on the spatial layer 1 and the frequency domain offset vector f2 The corresponding first weighting coefficient, and then report the first weighting coefficient corresponding to the CSI-RS port 2 on the spatial layer 1 and the frequency domain offset vector f0, and then report the CSI-RS port 2 on the spatial layer 1 and the frequency domain offset vector f2 corresponding to the first weighting coefficient, and so on. For the specific reporting sequence, please refer to the number in the box corresponding to the CSI-RS port and frequency domain offset vector in Figure 7. The number in the box can be understood as the CSI-RS port and frequency domain offset vector corresponding to the box The reporting sequence of the corresponding first weighting coefficient.

Optionally, for one or more first weighting coefficients corresponding to each spatial layer in different polarization directions, the first reporting sequence includes: first reporting the first weighting coefficient corresponding to the CSI-RS port X in the first polarization direction A weighting coefficient, and then report the first weighting coefficient corresponding to the CSI-RS port Z in the second polarization direction. For the first weighting coefficient corresponding to the CSI-RS port X, the first weighting coefficient corresponding to the CSI-RS port X is reported according to the index of the frequency domain offset vector from small to large. For the first weighting coefficient corresponding to the CSI-RS port Z, the first weighting coefficient corresponding to the CSI-RS port Z is reported according to the index of the frequency domain offset vector in ascending order.

Wherein, X is an integer greater than or equal to 0 and less than or equal to (P/2-1), and Z is equal to P/2+X. X is the index of port X, and Z is the index of port Z.

For example, as shown in Figure 7, the terminal device first reports the first weighting coefficient corresponding to CSI-RS port 0 in the first polarization direction, and then reports the first weighting coefficient corresponding to CSI-RS port P/2 in the second polarization direction coefficient. The first weighting coefficient corresponding to CSI-RS port 0 in the first polarization direction includes the first weighting coefficient corresponding to CSI-RS port 0 and the frequency domain offset vector f0, and the CSI-RS port 0 and the frequency domain offset vector f2 corresponding to the first weighting coefficient. The first weighting coefficient corresponding to the CSI-RS port P/2 in the second polarization direction includes the first weighting coefficient corresponding to the CSI-RS port P/2 and the frequency domain offset vector f0, and the CSI-RS port P/2 and The first weighting coefficient corresponding to the frequency domain offset vector f2. For the first weighting coefficient corresponding to CSI-RS port 0 in the first polarization direction, the terminal device first reports the first weighting coefficient corresponding to CSI-RS port 0 and frequency domain offset vector f0, and then reports CSI-RS port 0 A first weighting coefficient corresponding to the frequency domain offset vector f2. For the first weighting coefficient corresponding to the CSI-RS port P/2 in the second polarization direction, the terminal device first reports the first weighting coefficient corresponding to the CSI-RS port P/2 and the frequency domain offset vector f0, and then reports the CSI - the first weighting coefficient corresponding to the RS port P/2 and the frequency domain offset vector f2.

Optionally, if the terminal device selects at least two CSI-RS ports in the first polarization direction and selects at least two CSI-RS ports in the second polarization direction, the first reporting order includes: first report the first polarity The first weighting coefficient corresponding to the CSI-RS port X in the polarization direction, and then report the first weighting coefficient corresponding to the CSI-RS port Z in the second polarization direction, and then report the CSI-RS port in the first polarization direction The first weighting coefficient corresponding to W, and then report the first weighting coefficient corresponding to the CSI-RS port K in the second polarization direction;

Wherein, X is an integer greater than or equal to 0 and less than or equal to (P/2-1), Z is equal to P/2+X, P is the number of CSI-RS ports of the network device, and P is an integer greater than or equal to 2, W is an integer greater than or equal to 0 and less than or equal to (P/2-1), and K is equal to P/2+W. X is the index of CSI-RS port X, Z is the index of CSI-RS port Z, W is the index of CSI-RS port W, and K is the index of CSI-RS port K. X is not equal to W, and Z is not equal to K.

Among them, CSI-RS port X is the first CSI-RS port selected by the terminal device in the first polarization direction, and CSI-RS port Z is the first CSI-RS port selected by the terminal device in the second polarization direction port; CSI-RS port W is the second CSI-RS port selected by the terminal device in the first polarization direction, and CSI-RS port K is the second CSI-RS port selected by the terminal device in the second polarization direction port.

For example, as shown in Figure 7, the terminal device first reports the first weighting coefficient corresponding to CSI-RS port 0 in the first polarization direction, and then reports the first weighting coefficient corresponding to CSI-RS port P/2 in the second polarization direction coefficient, and then report the first weighting coefficient corresponding to CSI-RS port 2 in the first polarization direction, and then report the first weighting coefficient corresponding to CSI-RS port P/2+2, and so on. For the specific reporting sequence, please refer to the number in the box corresponding to the CSI-RS port and frequency domain offset vector in Figure 7. The number in the box can be understood as the CSI-RS port and frequency domain offset vector corresponding to the box The reporting sequence of the corresponding first weighting coefficient.

Optionally, for one or more first weighting coefficients corresponding to each spatial layer in different polarization directions, the first reporting order may also be expressed as: according to B ₁ , D ₁ ,...B _j , D _j in order to report one or more first weighting coefficients corresponding to each spatial layer. B ₁ is the first weighting coefficient corresponding to the first CSI-RS port selected by the terminal device in the first polarization direction. D ₁ is the first weighting coefficient corresponding to the first CSI-RS port selected by the terminal device in the second polarization direction. B _j is the first weighting coefficient corresponding to the jth CSI-RS port selected by the terminal device in the first polarization direction. D _j is the first weighting coefficient corresponding to the jth CSI-RS port selected by the terminal device in the second polarization direction. j is an integer greater than or equal to 1 and less than or equal to 2L.

For example, as shown in FIG. 7 , the terminal device selects 3 CSI-RS ports in the first polarization direction, and selects 3 CSI-RS ports in the second polarization direction. B ₁ is the first weighting coefficient corresponding to CSI-RS port 0 in the first polarization direction, and D ₁ is the first weighting coefficient corresponding to CSI-RS port P/2 in the second polarization direction. B ₂ is the first weighting coefficient corresponding to the CSI-RS port 2 in the first polarization direction, and D ₂ is the first weighting coefficient corresponding to the CSI-RS port P/2+2 in the second polarization direction. B ₃ is the first weighting coefficient corresponding to CSI-RS port 3 in the first polarization direction, and D ₃ is the first weighting coefficient corresponding to CSI-RS port P/2+3 in the second polarization direction. The terminal device first reports the first weighting coefficient corresponding to CSI-RS port 0 in the first polarization direction, then reports the first weighting coefficient corresponding to CSI-RS port P/2 in the second polarization direction, and then reports the first polarization The first weighting coefficient corresponding to CSI-RS port 2 in the direction, and then report the first weighting coefficient corresponding to CSI-RS port P/2+2 in the second polarization direction, and then report the CSI-RS port in the first polarization direction 3 corresponding to the first weighting coefficient, and finally report the first weighting coefficient corresponding to the CSI-RS port P/2+3 in the second polarization direction.

204. The terminal device sends the CSI to the network device. Correspondingly, the network device receives the CSI from the terminal device.

Wherein, the CSI includes first indication information, and the first indication information is used to indicate one or more first weighting coefficients of each spatial layer pair in a first reporting sequence.

For example, as shown in FIG. 3 , the first indication information indicates the first weighting coefficients corresponding to the blocks in the sequence of the block numbers shown in FIG. 3 . If the space in the first indication information is not enough to indicate the first weighting coefficient corresponding to the block as shown in FIG. 3 , the terminal device may discard the first weighting coefficient corresponding to the block with a larger serial number. For example, the first indication information may indicate the first weighting coefficient corresponding to the block whose sequence number is less than or equal to 8 shown in FIG. 3 .

Optionally, the CSI further includes an SCI, and the SCI is used to indicate the index of the CSI-RS port corresponding to the largest first weighting coefficient and the index of the frequency domain offset vector corresponding to the largest first weighting coefficient in each spatial layer.

The indication method of SCI can adopt the indication mode of the existing process, or the indication mode of the embodiment shown in Figure 8 below. For the specific indication mode of the embodiment shown in Figure 8, please refer to the relevant introduction below, which is not mentioned here. Details.

The above embodiment shown in FIG. 2 can be applied to the reporting of the first weighting coefficient in the weighting coefficient matrix of R17, that is, a possible reporting order of the first weighting coefficient in the weighting coefficient matrix in R17 is provided.

In this application, the terminal device receives the precoded CSI-RS from the network device. One or more first weighting coefficients corresponding to each spatial layer are determined according to the CSI-RS, each first weighting coefficient corresponds to a CSI-RS port, and the CSI-RS port is used for sending the CSI-RS. The terminal device determines a first reporting order, where the first reporting order includes: reporting corresponding first weighting coefficients in order of the index sizes of the CSI-RS ports. The terminal device sends the CSI to the network device, where the CSI includes first indication information, and the first indication information is used to indicate one or more first weighting coefficients corresponding to each spatial layer in a first reporting order. It can be seen that the technical solution of the present application provides the reporting order of one or more first weighting coefficients corresponding to each spatial layer, that is, the terminal device reports the corresponding first weighting coefficients in order of the index size of the CSI-RS port, so that The reporting of one or more first weighting coefficients corresponding to each spatial layer is implemented.

In this application, before step 201 of the above embodiment shown in FIG. 2 , the network device performs precoding processing on the CSI-RSs of the P CSI-RS ports, and obtains the precoding processing CSI-RSs corresponding to the P CSI-RS ports respectively. CSI-RS. A possible implementation manner for a network device to perform precoding processing on CSI-RSs of P CSI-RS ports is introduced below. Optionally, the above embodiment shown in FIG. 2 further includes step 201a. Step 201a may be performed before step 201.

201a. The network device performs precoding processing on the CSI-RSs of the P CSI-RS ports according to the first correspondence and the P space-frequency joint vectors, and obtains the precoded CSI-RSs respectively corresponding to the P CSI-RS ports .

Wherein, each of the P space-frequency joint vectors corresponds to a space-domain vector and a frequency-domain vector. The second weighting coefficient corresponding to each space-frequency joint vector is a weight value projected to the space-frequency joint vector by the uplink channel between the network device and the terminal device. Optionally, the P space-frequency joint vectors are selected from a space-frequency joint vector matrix, and the space-frequency joint vector matrix includes multiple space-frequency joint vectors. For the space-frequency joint basis vector matrix, please refer to the relevant introduction above. For more introductions about the second weighting coefficient corresponding to each space-frequency joint basis vector in the space-frequency joint basis vector matrix, please refer to the relevant introduction later.

The first correspondence is the correspondence between the P space-frequency joint vectors and the P CSI-RS ports determined according to the order of magnitudes of the second weighting coefficients corresponding to the P space-frequency joint vectors.

Optionally, the P space-frequency joint vectors are in one-to-one correspondence with the P CSI-RS ports in descending order of the second weighting coefficients. Wherein, the P CSI-RS ports are sorted according to the index of the CSI-RS ports from small to large.

For example, the P space-frequency joint vectors include 4 space-frequency joint vectors, namely space-frequency joint vector 0 to space-frequency joint vector 3 . The second weighting coefficient of the space-frequency joint vector 0 is greater than the second weighting coefficient of the space-frequency joint vector 2 . However, the second weighting coefficient of the space-frequency joint vector 2 is greater than the second weighting coefficient of the space-frequency joint vector 1 . The second weighting coefficient of the space-frequency joint vector 1 is greater than the second weighting coefficient of the space-frequency joint vector 3 . It can be known that the space-frequency joint vector 0 corresponds to port 0, the space-frequency joint vector 1 corresponds to port 2, the space-frequency joint vector 2 corresponds to port 1, and the space-frequency joint vector 3 corresponds to port 3.

The network device may precode the CSI-RS of the CSI-RS port 0 by using the joint space-frequency vector 0 to obtain the precoded CSI-RS of the CSI-RS port 0. The network device may precode the CSI-RS of the CSI-RS port 1 by using the space-frequency joint vector 2 to obtain the precoded CSI-RS of the CSI-RS port 1. The network device may precode the CSI-RS of the CSI-RS port 2 by using the joint space-frequency vector 1 to obtain the precoded CSI-RS of the CSI-RS port 2. The network device may use the space-frequency joint vector 3 to perform precoding processing on the CSI-RS of the CSI-RS port 3 to obtain the precoded CSI-RS of the CSI-RS port 3 .

The following describes a process for the network device to determine the second weighting coefficients corresponding to the P space-frequency joint vectors and the first correspondence in conjunction with steps 201b to 201e. Optionally, step 201b to step 201e may be performed before step 201a.

201b. The network device acquires an uplink channel.

Wherein, the uplink channel is an uplink channel between the network device and the terminal device.

For example, a network device may receive a sounding reference signal (sounding reference signal, SRS) from a terminal device. The network device determines the uplink channel information between the network device and the terminal device according to the SRS.

201c. The network device determines a second weighting coefficient corresponding to each space-frequency joint vector in the space-frequency joint basis vector matrix according to the uplink channel.

Wherein, the space-frequency joint basis vector matrix includes multiple space-frequency joint basis vectors. Each space-frequency joint basis vector corresponds to a space-domain vector and a frequency-domain vector. The second weighting coefficient corresponding to each space-frequency joint basis vector is a weight corresponding to the projection of the uplink channel onto the space-frequency joint vector. For the introduction of the space-frequency joint basis vector matrix and the space-frequency joint basis vector, please refer to the introduction in the related terms above, and will not repeat them here.

For example, the network device projects the uplink channel to each space-frequency joint basis vector to obtain the second weighting coefficient corresponding to each space-frequency joint basis vector.

201d. The network device selects P space-frequency joint vectors from the space-frequency joint vector matrix according to the second weighting coefficient corresponding to each space-frequency joint basis vector.

In some implementation manners, the network device selects the P space-frequency joint vectors with the largest second weighting coefficients from the space-frequency joint basis vector matrix.

201e. The network device determines the first corresponding relationship between the P CSI-RS ports and the P space-frequency joint vectors according to the second weighting coefficients respectively corresponding to the P space-frequency joint vectors.

For example, the network device associates the P space-frequency joint vectors with the P CSI-RS ports in descending order of the second weighting coefficients to obtain the first correspondence. The P CSI-RS ports are sorted according to the index of the CSI-RS ports from small to large.

From the above step 201b to step 201e, it can be seen that, on the network device side, among the second weighting coefficients corresponding to the P CSI-RS ports, the second weighting coefficient corresponding to the CSI-RS port with a smaller index is larger, and the CSI-RS port with a larger index - the second weighting coefficient corresponding to the RS port is relatively small. Utilizing the reciprocity between the uplink channel and the downlink channel, on the terminal device side, among the first weighting coefficients corresponding to the P CSI-RS ports, the first weighting coefficient corresponding to the CSI-RS port with a smaller index basically satisfies Larger, the first weighting coefficient corresponding to a CSI-RS port with a larger index is smaller. Therefore, in the embodiment shown in FIG. 2 above, the terminal device may report the corresponding first weighting coefficients according to the index of the CSI-RS port in ascending order. Based on the reciprocity between the uplink channel and the downlink channel, the terminal device basically reports the larger first weighting coefficient, that is, reports the weighting coefficient corresponding to the space-frequency joint vector with the larger first weighting coefficient. The larger the first weighting coefficient is, the more important the space-frequency basis vector corresponding to the first weighting coefficient is. The space-frequency basis vector is used to represent channel information, so that terminal equipment can feed back more important channel information to network equipment in a limited CSI feedback space. In this way, it is convenient for the network device to obtain more important channel information, and the network device can better send data to the terminal device according to the channel information, thereby improving communication transmission performance.

FIG. 8 is a schematic diagram of another embodiment of a communication processing method according to an embodiment of the present application. Please refer to Figure 8, communication processing method:

801. The network device sends second indication information to the terminal device. Correspondingly, the terminal device receives the second indication information from the network device.

The second indication information is used to indicate the adjustment parameter α of the index selection range of the CSI-RS port. Wherein, the adjustment parameter α is greater than 0 and less than or equal to 1.

For example, the network device sends the CSI-RS to the terminal device through the P CSI-RS ports. P is an integer greater than or equal to 2. The terminal device selects 2L CSI-RS ports from the P CSI-RS ports in the first space layer, and the adjustment parameter is α. L is an integer greater than or equal to 1 and less than or equal to P/2, P is an integer greater than or equal to 2, and α is greater than 0 and less than or equal to 1. Therefore, the index selection range of the CSI-RS ports of the SCI is the index range of the first 2L*α CSI-RS ports among the 2L CSI-RS ports. That is to say, the network device narrows down the index selection range of the CSI-RS port of the terminal device in the first space layer by adjusting the parameters.

For example, the network device sends CSI-RS to the terminal device through the first P/2 CSI-RS ports in the first polarization direction, and sends the CSI-RS to the terminal device through the last P/2 CSI-RS ports in the second polarization direction. CSI-RS port. The terminal device selects L CSI-RS ports in the first polarization direction, selects L CSI-RS ports in the second polarization direction, and adjusts the parameter to α. α is greater than 0 and less than or equal to 1. L is an integer greater than or equal to 1 and less than or equal to P/2, and P is an integer greater than or equal to 2. The index selection range of the CSI-RS port of SCI includes: the terminal device selects the index range of the first L*α CSI-RS ports among the L CSI-RS ports selected in the first polarization direction, and the terminal device selects the index range of the first L*α CSI-RS ports in the second polarization direction. The index range of the first L*α CSI-RS ports selected among the L CSI-RS ports selected in the polarization direction.

In some embodiments, the adjustment parameter α is 1/2, 1/4, or 1.

For example, the terminal device selects 2L CSI-RS ports from the P CSI-RS ports, and the adjustment parameter is 1/2. Then, the index selection range of the CSI-RS ports of the terminal device in the first spatial layer is within the index range of the first L CSI-RS ports among the 2L CSI-RS ports.

For example, the terminal device selects 2L CSI-RS ports from the P CSI-RS ports, and the adjustment parameter is 1/4. Then, the index selection range of the CSI-RS ports of the terminal device in the first space layer is within the index range of the first L/2 CSI-RS ports of the 2L CSI-RS ports.

For example, the terminal device selects 2L CSI-RS ports from the P CSI-RS ports, and the adjustment parameter is 1. Then, the index selection range of the CSI-RS ports of the terminal device in the first space layer is within the index range of the 2L CSI-RS ports.

802. The terminal device determines a first indication field in the SCI for indicating an index of a CSI-RS port according to the adjustment parameter.

Specifically, the terminal device determines the number of bits in the first indication field used to indicate the index of the CSI-RS port in the SCI according to the adjustment parameter.

For example, the terminal device selects 6 CSI-RS ports on the first space layer, which are: CSI-RS port 0, CSI-RS port 2, CSI-RS port 3, CSI-RS port P/2, CSI-RS port Port P/2+2 and CSI-RS port P/2+3. The above adjustment parameter α is 1/2. Therefore, the index selection range of the CSI-RS port is the index corresponding to CSI-RS port 0, CSI-RS port 2, and CSI-RS port 3. It can be known that the terminal device can determine that the first indication field used to indicate the index of the CSI-RS port in the SCI may include two bits.

It should be noted that, optionally, the value of the first indication field may be a binary representation of the sequence number of the CSI-RS port indicated by the first indication field. The sequence numbers of the CSI-RS ports in the embodiment shown in FIG. 8 and the relationship between the index of the CSI-RS ports and the sequence numbers of the CSI-RS ports are introduced below. The terminal device selects 2L CSI-RS ports on the first spatial layer. The terminal device determines the index selection range of the CSI-RS port according to the adjustment parameter. For example, if the adjustment parameter is α, the index selection range of the CSI-RS port of the terminal device is the first 2L*α CSI-RS ports among the 2L CSI-RS ports. The terminal device is based on the relative positional relationship of the first 2L*α CSI-RS ports among the 2L CSI-RS ports (that is, the front and rear positional relationship of the first 2L*α CSI-RS ports among the 2L CSI-RS ports) The first 2L*α CSI-RS ports are sorted again to obtain the serial number of each CSI-RS port in the first 2L*α CSI-RS ports. Therefore, it can be understood that there is a corresponding relationship between the indexes of the first 2L*α CSI-RS ports and the serial numbers of the first 2L*α CSI-RS ports.

For example, the terminal device selects 6 CSI-RS ports on space layer 1, which are: CSI-RS port 0, CSI-RS port 2, CSI-RS port P/2, CSI-RS port P/2+2, CSI-RS port P/2+3 and CSI-RS port P/2+4. The above adjustment parameter α is 1/2. The terminal device selects the first 3 CSI-RS ports among the 6 CSI-RS ports according to the adjustment parameters, specifically: CSI-RS port 0, CSI-RS port 2, and CSI-RS port P/2. The terminal device determines the first weighting coefficient corresponding to CSI-RS port 0, the first weighting coefficient corresponding to CSI-RS port 2, and the first weighting coefficient corresponding to CSI-RS port P/2. The terminal device determines the index of the CSI-RS port corresponding to the largest first weighting factor from the CSI-RS port 0, the CSI-RS port 2, and the CSI-RS port P/2. Therefore, the terminal device sorts the first 3 CSI-RS ports according to the relative position relationship of the first 3 CSI-RS ports among the 6 CSI-RS ports, and obtains each CSI-RS port in the first 3 CSI-RS ports. - the serial number of the RS port. That is, the sequence number of CSI-RS port 0 is 0, the sequence number of CSI-RS port 2 is 1, and the sequence number of CSI-RS port P/2 is 2. The serial number of the CSI-RS port can be used for the binary representation of the bits in the first indication field. For example, if the largest first weighting coefficient is the first weighting coefficient corresponding to CSI-RS port 0, since the serial number of CSI-RS port 0 is 0, the value of the first indication field may be the serial number of CSI-RS port 0 The binary representation of , that is, the value of the first indication field is "00", which is used to indicate the index of CSI-RS port 0. If the largest first weighting coefficient is the first weighting coefficient corresponding to CSI-RS port 2, since the serial number of CSI-RS port 2 is 1, the value of the first indication field can be the binary number of the serial number of CSI-RS port 2 Indicates that the value of the first indication field is "01", which is used to indicate the index of CSI-RS port 2. If the largest first weighting factor is the first weighting factor corresponding to CSI-RS port P/2, since the serial number of CSI-RS port P/2 is 2, the value of the first indication field can be CSI-RS port P The binary representation of the sequence number of /2, the first indication field may take a value of "10", which is used to indicate the index of the CSI-RS port P/2.

In some implementations, the number of bits in the first indication field is

in,

Indicates that log ₂ (K) is rounded up. log ₂ (K) means taking the logarithm of K to the base 2. K=α*2L, where 2L is the total number of CSI-RS ports selected by the terminal device on the first spatial layer. α is an adjustment parameter, α is greater than 0 and less than or equal to 1, L is an integer greater than or equal to 1 and less than or equal to P/2, and P is an integer greater than or equal to 2.

Optionally, the SCI is also used to indicate the index of the frequency domain offset vector. The SCI includes a second indication field for indicating the index of the frequency domain offset vector.

For example, the terminal device selects M frequency-domain offset vectors from the N frequency-domain offset vectors indicated by the network device. Optionally, the index of the frequency domain offset vector is expressed in binary form, and the number of bits of the second indication field is

M is an integer greater than or equal to 1 and less than or equal to N, and N is an integer greater than or equal to 1.

803. The terminal device sends the SCI to the network device. Correspondingly, the network device receives the SCI from the terminal device.

Wherein, the first indication field in the SCI indicates the index of the CSI-RS port corresponding to the largest first weighting coefficient on the first spatial layer. For the relevant introduction about the first weighting coefficient, please refer to the relevant introduction in the embodiment shown in the aforementioned FIG. 2 , which will not be repeated here.

Optionally, the value of the first indication field may be a binary representation of the serial number of the CSI-RS port corresponding to the largest first weighting factor. For the serial number of the CSI-RS port, please refer to the relevant introduction in the aforementioned step 802, and details will not be repeated here. For example, the first 2L*α CSI-RS ports include CSI-RS port 0, CSI-RS port 2, and CSI-RS port P/2. If the largest first weighting coefficient corresponds to CSI-RS port 0, the value of the first indication field of the SCI may be "00", which is used to indicate the index of CSI-RS port 0. If the largest first weighting coefficient corresponds to CSI-RS port 2, the value of the first indication field in the SCI may be "01", which is used to indicate the index of CSI-RS port 2. If the largest first weighting coefficient corresponds to CSI-RS port P/2, the value of the first indication field of the SCI may be "10", which is used to indicate the index of CSI-RS port P/2.

Optionally, the SCI is also used to indicate the index of the frequency domain offset vector corresponding to the largest first weighting coefficient.

In some embodiments, the total number of bits occupied by the SCI is:

or,

Among them, M is the total number of frequency domain offset vectors selected by the terminal device on the first spatial layer, M is an integer greater than or equal to 1, K=α*2L, and 2L is the CSI selected by the terminal device on the first spatial layer - the total number of RS ports, α is an adjustment parameter, α is greater than 0 and less than or equal to 1, L is an integer greater than or equal to 1 and less than or equal to P/2, and P is an integer greater than or equal to 2.

Optionally, the indication field in the SCI used to indicate the index of the frequency domain offset vector corresponding to the largest first weighting coefficient is called a second indication field.

For example, the terminal device selects four frequency-domain offset vectors on the first spatial layer, which are frequency-domain offset vector f0, frequency-domain offset vector f2, frequency-domain offset vector f3, and frequency-domain offset vector f5. Therefore, the terminal device may determine that the second indication field used to indicate the index of the frequency domain offset vector in the SCI may include two bits.

It should be noted that, optionally, the value of the second indication field may be a binary representation of the serial number of the frequency domain offset vector indicated by the second indication field. In the embodiment shown in FIG. 8 , the serial number of the frequency domain offset vector and the relationship between the index of the frequency domain offset vector and the serial number of the frequency domain offset vector are introduced below. The network device indicates N frequency domain offset vectors to the terminal device, each of the N frequency domain offset vectors has a corresponding index, and N is an integer greater than or equal to 1 and less than or equal to N, N is an integer greater than or equal to 1. The terminal device selects M frequency domain offset vectors on the first spatial layer. M is an integer greater than or equal to 1 and less than or equal to N. The terminal device redefines the The M frequency domain offset vectors are sorted to obtain the serial number of each frequency domain offset vector in the M frequency domain offset vectors. Therefore, it can be understood that there is a corresponding relationship between the index of the frequency domain offset vector and the serial number of the frequency domain offset vector.

For example, the terminal device selects three frequency-domain offset vectors on the first spatial layer, which are frequency-domain offset vector f0, frequency-domain offset vector f2, and frequency-domain offset vector f5. Therefore, the terminal device may determine that the second indication field used to indicate the index of the frequency domain offset vector in the SCI may include two bits. The terminal device reorders the three frequency domain offset vectors according to the relative positional relationship of the three frequency domain offset vectors among the N frequency domain offset vectors, to obtain the sequence numbers of the three frequency domain offset vectors. That is, the serial number of the frequency domain offset vector f0 is 0, the serial number of the frequency domain offset vector f2 is 1, and the serial number of the frequency domain offset vector f5 is 2. The terminal device determines the first weighting coefficient corresponding to the frequency domain offset vector f0, the first weighting coefficient corresponding to the frequency domain offset vector f2, and the first weighting coefficient corresponding to the frequency domain offset vector f5. Then, the terminal device determines the index of the frequency domain offset vector corresponding to the largest first weighting coefficient from the frequency domain offset vector f0, the frequency domain offset vector f2 and the frequency domain offset vector f5. The serial number of the frequency domain offset vector can be used for the binary representation of the bits in the second indication field. For example, if the frequency domain offset vector corresponding to the largest first weighting coefficient is f0, since the serial number of the frequency domain offset vector f0 is 0, the value of the second indication field in the SCI can be the frequency domain offset vector The binary representation of the serial number of f0, that is, the value of the second indication field may be "00", which is used to indicate the index of the frequency domain offset vector f0. If the frequency domain offset vector corresponding to the largest first weighting coefficient is f2, since the serial number of the frequency domain offset vector f2 is 1, the value of the second indication field in the SCI can be the serial number of the frequency domain offset vector f2 Binary representation, that is, the value of the second indication field may be "01", which is used to indicate the index of the frequency domain offset vector f2. If the frequency domain offset vector corresponding to the largest first weighting coefficient is f5, since the serial number of the frequency domain offset vector f5 is 2, the value of the second indication field in the SCI can be the serial number of the frequency domain offset vector f5 Binary representation, that is, the value of the second indication field may be "10", which is used to indicate the index of the frequency domain offset vector f5.

It can be seen from this that the network device indicates the adjustment parameter to the terminal device. The terminal device can determine the index selection range of the CSI-RS port according to the adjustment parameter. For example, the terminal device may narrow down the index selection range of the CSI-RS ports to the indexes of the first 2L*α CSI-RS ports among the 2L CSI-RS ports. The number of bits used to indicate the index of the CSI-RS port in the SCI is log ₂ (K). The number of bits used to indicate the index of the CSI-RS port in the SCI is reduced, and the bit overhead of the index used to indicate the CSI-RS port in the SCI is reduced. Thereby saving bit resources.

It should be noted that the above-mentioned embodiment shown in FIG. 8 is an example of the index of the CSI-RS port corresponding to the SCI indicating the largest first weighting coefficient on the first spatial layer and the index of the corresponding frequency domain offset vector. The process of indicating the index of the CSI-RS port corresponding to the largest first weighting coefficient and the index of the corresponding frequency domain offset vector by the SCI on other spatial layers is also applicable, and the details are not limited in this application.

It can be seen from the above step 201a that the network device performs precoding processing on the CSI-RS of the P CSI-RS ports according to the first corresponding relationship and the P space-frequency joint vectors, and obtains the precoded CSI-RS corresponding to the P CSI-RS ports respectively. Processed CSI-RS. Optionally, the P space-frequency joint vectors are in one-to-one correspondence with the P CSI-RS ports in descending order of the second weighting coefficients. Wherein, the P CSI-RS ports are sorted according to port indexes from small to large.

On the network device side, among the second weighting coefficients corresponding to the P CSI-RS ports, the second weighting coefficient corresponding to the CSI-RS port with a smaller index is larger, and the second weighting coefficient corresponding to the CSI-RS port with a larger index is smaller. Taking advantage of the reciprocity of the uplink and downlink channels, on the terminal device side, among the first weighting coefficients corresponding to the P CSI-RS ports, the first weighting coefficient corresponding to the CSI-RS port with the smaller index is basically larger, and the index The first weighting coefficient corresponding to a larger CSI-RS port is smaller. Therefore, the largest first weighting factor should also be the CSI-RS port corresponding to a smaller index. As shown in Figure 9, in Figure 9, the abscissa represents the index of the CSI-RS port corresponding to the largest first weighting coefficient, and the ordinate represents the probability of the index of the CSI-RS port represented by the largest first weighting coefficient corresponding to the abscissa . It can be seen from FIG. 9 that the smaller the index of the CSI-RS port is, the larger the value of the corresponding ordinate is, that is, the probability that the largest first weighting coefficient corresponds to a CSI-RS port with a smaller index is greater. That is, the index of the CSI-RS port corresponding to the largest first weighting coefficient should be relatively small. The network device indicates the adjustment parameter to the terminal device. The terminal device may determine the first indication field in the SCI for indicating the index of the CSI-RS port according to the adjustment parameter. In this way, the terminal device can not only correctly indicate to the network device the index of the CSI-RS port corresponding to the largest first weighting coefficient, but also reduce the number of bits in the SCI used to indicate the index of the CSI-RS port, and reduce the number of bits used in the SCI to indicate the index of the CSI-RS port. The bit overhead of the index of the CSI-RS port. Thereby saving bit resources.

The communication device provided by the embodiment of the present application is described below. Please refer to FIG. 10, which is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication apparatus 1000 may be configured to perform the steps performed by the terminal device in the embodiment shown in FIG. 2 , and for details, refer to the related introduction of the above method embodiments.

The communication device 1000 includes a transceiver module 1001 and a processing module 1002 .

A transceiver module 1001, configured to receive a precoded CSI-RS from a network device;

The processing module 1002 is configured to determine one or more first weighting coefficients corresponding to each spatial layer according to the CSI-RS, each first weighting coefficient corresponds to a CSI-RS port, and the CSI-RS port is used to send the CSI-RS RS: determining the first reporting order, the first reporting order includes: reporting the corresponding first weighting coefficients according to the order of the index size of the CSI-RS port;

The transceiver module 1001 is further configured to send CSI to the network device, where the CSI includes first indication information, and the first indication information is used to indicate one or more first weighting coefficients corresponding to each spatial layer in a first reporting sequence.

CSI-RS port X is the first CSI-RS port selected by the communication device 1000 in the first polarization direction, and CSI-RS port Z is the first CSI-RS port selected by the communication device 1000 in the second polarization direction port; CSI-RS port W is the first CSI-RS port selected by the communication device 1000 in the first polarization direction, and CSI-RS port K is the second CSI-RS port selected by the communication device 1000 in the second polarization direction -RS port.

i _l represents the sequence number of the i-th CSI-RS port among the 2L CSI-RS ports selected by the communication device 1000 on the l-th spatial layer, and the sequence number of the i-th CSI-RS port is the same as that of the i-th CSI-RS port Corresponding to the index, i _l is an integer greater than or equal to 0 and less than or equal to 2L-1, 2L CSI-RS ports are the total number of CSI-RS ports selected by the communication device 1000 on the first spatial layer, and L is greater than or equal to An integer equal to 1 and less than or equal to P/2, where P is an integer greater than or equal to 2;

f _l is the sequence number of the f-th frequency-domain offset vector among the M frequency-domain offset vectors selected by the communication device 1000 on the l-th spatial layer, and the sequence number of the f-th frequency-domain offset vector is the same as the f-th frequency-domain offset vector The index of the offset vector corresponds, M represents the total number of frequency domain offset vectors selected by the communication device 1000 on the first spatial layer, f _l is an integer greater than or equal to 0 and less than or equal to M-1, and M is greater than or equal to An integer equal to 1.

Among them, P _ri2 (l,i,f)=π(i _l )*v*M+v*f _l +l,

f _l is the sequence number of the f-th frequency-domain offset vector among the M frequency-domain offset vectors selected by the communication device 1000 on the l-th spatial layer, and the sequence number of the f-th frequency-domain resource vector is the same as that of the f-th frequency-domain offset vector corresponds to the index of the shift vector, M represents the total number of frequency domain shift vectors selected by the communication device 1000 on the lth spatial layer, f _l is an integer greater than or equal to 0 and less than or equal to M-1, and M is greater than or equal to an integer of 1;

Indicates the index of the i-th CSI-RS port.

The present application also provides another communication device, please refer to FIG. 11 . FIG. 11 is another schematic structural diagram of a communication device according to an embodiment of the present application. The communication apparatus 1100 may be configured to perform the steps performed by the network device in the embodiment shown in FIG. 2 , and for details, refer to the relevant introduction of the above method embodiments.

The communication device 1100 includes a transceiver module 1101 . Optionally, the communication device 1100 further includes a processing module 1102 .

The transceiver module 1100 is configured to send the precoded CSI-RS to the terminal device; receive the CSI from the terminal device;

Wherein, the CSI includes first indication information, and the first indication information is used to indicate one or more first weighting coefficients corresponding to each spatial layer in the first reporting order, and the one or more first weighting coefficients are determined according to the CSI-RS Yes, each first weighting coefficient corresponds to a CSI-RS port, and the CSI-RS port is used to send the CSI-RS, and the first reporting sequence includes: reporting the corresponding first weighting coefficients according to the index size of the CSI-RS port.

In another possible implementation manner, the transceiver module 1101 is specifically used for:

sending the CSI-RS through P CSI-RS ports;

The first P/2 CSI-RS ports among the P CSI-RS ports correspond to the first polarization direction, and the last P/2 CSI-RS ports among the P CSI-RS ports correspond to the second polarization direction;

sending the CSI-RS through P CSI-RS ports;

The first reporting sequence includes: first reporting the first weighting coefficient corresponding to the CSI-RS port X in the first polarization direction, and then reporting the first weighting coefficient corresponding to the CSI-RS port Z in the second polarization direction, and then reporting The first weighting coefficient corresponding to the CSI-RS port W in the first polarization direction, and then report the first weighting coefficient corresponding to the CSI-RS port K in the second polarization direction;

Wherein, the first parameter value P _ri1 (l,i,f)=i _l *v*M+v*f _l +l;

i _l represents the sequence number of the i-th CSI-RS port among the 2L CSI-RS ports selected by the terminal device on the l-th spatial layer, and the sequence number of the i-th port corresponds to the index of the i-th port, i _l is an integer greater than or equal to 0 and less than or equal to 2L-1, 2L CSI-RS ports are the total number of CSI-RS ports selected by the terminal device on the first spatial layer, L is greater than or equal to 1 and less than or equal to An integer of P/2, P is an integer greater than or equal to 2;

Among them, P _ri2 (l,i,f)=π(i _l )*v*M+v*f _l +l,

Indicates the index of the i-th CSI-RS port.

The communication processing apparatus shown in FIG. 10 may also be used to execute the steps performed by the terminal device in the embodiment shown in FIG. 8 . For details, please refer to the related introduction of the embodiment shown in FIG. 8 .

The transceiver module 1001 is configured to receive second indication information from the network device, where the second indication information is used to indicate the adjustment parameters of the index selection range of the CSI-RS port;

A processing module 1002, configured to determine a first indication field in the SCI for indicating an index of a CSI-RS port according to an adjustment parameter;

The transceiver module 1001 is further configured to send the SCI to the network device, the first indication field in the SCI indicates the index of the CSI-RS port corresponding to the largest first weighting coefficient in the first spatial layer, and the largest first weighting coefficient in the first spatial layer corresponds to the index of the CSI-RS port. The weighting coefficient is determined according to the CSI-RS sent by the network device.

K=α*2L, 2L is the number of CSI-RS ports selected by the terminal device on the first spatial layer, α is an adjustment parameter, α is greater than 0 and less than or equal to 1, and L is greater than or equal to 1 and less than or equal to P/2 Integer, P is an integer greater than or equal to 2.

In another possible implementation manner, the value of α is 1/2, 1/4, or 1.

In another possible implementation, the total number of bits occupied by SCI is

or,

Among them, M is the number of frequency domain offset vectors selected by the terminal device on the first spatial layer, K=α*2L, 2L is the number of CSI-RS ports selected by the terminal device on the first spatial layer, and α is the adjustment parameter , α is greater than 0 and less than or equal to 1, L is an integer greater than or equal to 1 and less than or equal to P/2, P is an integer greater than or equal to 2, and M is an integer greater than or equal to 1.

The communication processing apparatus shown in FIG. 11 may also be used to execute the steps performed by the network device in the embodiment shown in FIG. 8 . For details, please refer to the related introduction of the embodiment shown in FIG. 11 .

The transceiver module 1101 is configured to send second indication information to the terminal device, the second indication information is used to indicate the adjustment parameter of the index selection range of the CSI-RS port, and the adjustment parameter is used by the terminal device to determine the SCI used to indicate the CSI-RS port The first indication field of the index; receive the SCI from the terminal device, the first indication field in the SCI indicates the index of the CSI-RS port corresponding to the largest first weighting coefficient in the first spatial layer, and the largest in the first spatial layer The first weighting coefficient is determined according to the CSI-RS.

In another possible implementation manner, the value of α is 1/2, 1/4, or 1.

In another possible implementation, the total number of bits occupied by SCI is

or,

Among them, M is the total number of frequency domain offset vectors selected by the terminal device on the first spatial layer, K=α*2L, 2L is the total number of CSI-RS ports selected by the terminal device on the first spatial layer, and α is the adjusted Parameters, α is greater than 0 and less than or equal to 1, L is an integer greater than or equal to 1 and less than or equal to P/2, P is an integer greater than or equal to 2, and M is an integer greater than or equal to 1.

The embodiment of the present application also provides a terminal device. FIG. 12 is a schematic structural diagram of a terminal device 2000 provided by an embodiment of the present application. The terminal device 2000 may be applied to the system shown in FIG. 1, for example, the terminal device 2000 may be UE1 in the system in FIG.

As shown in the figure, the terminal device 2000 includes a processor 1210 and a transceiver 1220 . Optionally, the terminal device 2000 further includes a memory 1230 . Among them, the processor 1210, the transceiver 1220, and the memory 1230 can communicate with each other through an internal connection path, and transmit control and/or data signals. Call and run the computer program to control the transceiver 1220 to send and receive signals. Optionally, the terminal device 2000 may further include an antenna 1240, configured to send the uplink data or uplink control signaling output by the transceiver 1220 through wireless signals.

The processor 1210 and the memory 1230 may be combined into a processing device, and the processor 1210 is configured to execute the program codes stored in the memory 1230 to realize the above functions. During specific implementation, the memory 1230 may also be integrated in the processor 1210 , or be independent of the processor 1210 . The processor 1210 may correspond to the processing module 1002 in FIG. 10 .

The above-mentioned transceiver 1220 may correspond to the transceiver module 1001 in FIG. 10 , and may also be called a transceiver unit. The transceiver 1220 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Among them, the receiver is used to receive signals, and the transmitter is used to transmit signals.

It should be understood that the terminal device 2000 shown in FIG. 12 can implement various processes involving the terminal device in the method embodiments shown in FIG. 2 and FIG. 8 . The operations and/or functions of the various modules in the terminal device 2000 are respectively for realizing the corresponding processes in the above apparatus embodiments. For details, reference may be made to the descriptions in the foregoing device embodiments. To avoid repetition, detailed descriptions are appropriately omitted here.

The above-mentioned processor 1210 can be used to execute the actions implemented by the terminal device described in the foregoing device embodiments, and the transceiver 1220 can be used to execute the actions described in the foregoing device embodiments that the terminal device sends to or receives from the network device. action. For details, please refer to the description in the foregoing device embodiments, and details are not repeated here.

Optionally, the terminal device 2000 may further include a power supply 1250, configured to provide power to various devices or circuits in the terminal device.

In addition, in order to make the functions of the terminal device more perfect, the terminal device 2000 may also include one or more of an input unit 1260, a display unit 1270, an audio circuit 1280, a camera 1290, and a sensor 1200. The audio circuit A speaker 1282, a microphone 1284, etc. may also be included.

The application also provides a network device. Please refer to Figure 13, Figure 13 is a schematic structural diagram of a network device 3000 provided by the embodiment of the present application, the network device 3000 can be applied to the system shown in Figure 1, for example, the network device 3000 can be the network device in the system shown in Figure 1 , to execute the function of the network device in the foregoing method embodiment. It should be understood that the following are only examples, and network devices may have other forms and configurations in future communication systems.

For example, in a 5G communication system, the network device 3000 may include CU, DU and AAU, compared to the network device in the LTE communication system consisting of one or more radio frequency units, such as remote radio unit (remote radio unit, RRU ) and one or more baseband units (base band unit, BBU):

The non-real-time part of the original BBU will be separated and redefined as CU, which is responsible for processing non-real-time protocols and services. Part of the physical layer processing function of BBU is merged with the original RRU and passive antenna into AAU, and the remaining functions of BBU are redefined as DU. Responsible for handling physical layer protocols and real-time services. In short, CU and DU are distinguished by the real-time nature of processing content, and AAU is a combination of RRU and antenna.

CU, DU, and AAU can be separated or combined. Therefore, there will be various network deployment forms. A possible deployment form is shown in Figure 13. It is consistent with traditional 4G network equipment, and CU and DU share hardware deployment. It should be understood that FIG. 13 is only an example, and does not limit the scope of protection of this application. For example, the deployment form may also be that DUs are deployed in the BBU equipment room, CUs are deployed in a centralized manner or DUs are deployed in a centralized manner, and CUs are centralized at a higher level.

The AAU 3100 that can implement the transceiver function is called the transceiver unit 3100, which corresponds to the transceiver module 1101 in FIG. 11 . Optionally, the transceiver unit 3100 may also be called a transceiver, a transceiver circuit, or a transceiver, and may include at least one antenna 3101 and a radio frequency unit 3102 . Optionally, the transceiver unit 3100 may include a receiving unit and a sending unit, the receiving unit may correspond to a receiver (or receiver, receiving circuit), and the sending unit may correspond to a transmitter (or transmitter, transmitting circuit). The CU and DU 3200 can implement internal processing functions and are called processing unit 3200, which corresponds to the processing module 1102 in FIG. 11 . Optionally, the processing unit 3200 may control network devices, and may be called a controller. The AAU, the CU and the DU may be physically set together, or physically separated.

In addition, the network device is not limited to the form shown in FIG. 13, and may also be in other forms: for example: including a BBU and an adaptive radio unit (adaptive radio unit, ARU), or including a BBU and an active antenna unit (active antenna unit, AAU ); it can also be customer premises equipment (CPE), or in other forms, which are not limited in this application.

In an example, the processing unit 3200 may be composed of one or more single boards, and multiple single boards may jointly support a wireless access network (such as an LTE network) of a single access standard, or may separately support a wireless access network of a single access standard. Wireless access network (such as LTE network, 5G network, future network or other networks). The CU and DU 3200 also include a memory 3201 and a processor 3202 . The memory 3201 is used to store necessary instructions and data. The processor 3202 is used to control the network device to perform necessary actions, for example, to control the network device to execute the operation procedures related to the network device in the above method embodiments. The memory 3201 and the processor 3202 may serve one or more boards. That is to say, memory and processors can be set independently on each single board. It may also be that multiple single boards share the same memory and processor. In addition, necessary circuits can also be set on each single board.

It should be understood that the network device 3000 shown in FIG. 13 can implement the network device functions involved in the method embodiments in FIG. 2 and FIG. 8 . The operations and/or functions of each unit in the network device 3000 are respectively to implement the corresponding processes executed by the network device in the method embodiments of the present application. To avoid repetition, detailed descriptions are appropriately omitted here. The structure of the network device illustrated in FIG. 13 is only a possible form, and should not constitute any limitation to this embodiment of the present application. This application does not exclude the possibility of other forms of network equipment structures that may appear in the future.

The above-mentioned CU and DU 3200 can be used to execute the actions internally implemented by the network device described in the previous method embodiments, and the AAU 3100 can be used to perform the actions described in the previous method embodiments sent by the network device to the terminal device or received from the terminal device. action. For details, please refer to the description in the foregoing method embodiments, and details are not repeated here.

The embodiment of the present application also provides a processing device, including a processor and a communication interface; the processor is configured to execute a computer program, so that the processing device implements the methods in the above method embodiments.

It should be understood that the above processing device may be a chip or a chip system. For example, the processing device can be an FPGA, an ASIC, a system chip (system on chip, SoC), a central processing unit (central processor unit, CPU), or a network processor (network processor, NP), it can also be a DSP, it can also be a microcontroller (micro controller unit, MCU), it can also be a PLD or other integrated chips. The communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip or the chip system. The processor may also be embodied as a processing circuit or logic circuit.

In the implementation process, each step of the above-mentioned device can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of the device disclosed in the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above-mentioned device in combination with its hardware. To avoid repetition, no detailed description is given here.

It should be noted that the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above-mentioned device embodiment may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components . The devices, steps, and logic block diagrams disclosed in the embodiments of the present application may be realized or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the device disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above-mentioned device in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Wherein, the non-volatile memory may be ROM, programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), EEPROM or flash memory. Volatile memory can be RAM, which acts as external cache memory. By way of illustration and not limitation, many forms of RAM are available such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM ) and direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memory of the systems and devices described herein is intended to include, but not be limited to, these and any other suitable types of memory.

According to the device provided in the embodiment of the present application, the present application also provides a computer program product, the computer program product including: computer program code, when the computer program code is run on the computer, the computer is made to execute the computer shown in Figure 2 and Figure 8. The method of any one of the embodiments is illustrated.

According to the device provided in the embodiment of the present application, the present application also provides a computer-readable medium, the computer-readable medium stores program code, and when the program code is run on the computer, the computer is made to execute the computer shown in Figure 2 and Figure 8. The method of any one of the embodiments is illustrated.

According to the apparatus provided in the embodiments of the present application, the present application further provides a system, which includes the foregoing one or more terminal devices and one or more network devices.

The embodiment of the present application also provides a chip device, including a processor, used to call the computer programs or computer instructions stored in the memory, so that the processor executes the communication processing method of the above-mentioned embodiments shown in FIG. 2 and FIG. 8 .

In a possible implementation manner, the input of the chip device corresponds to the receiving operation in the above-mentioned embodiment shown in Figure 2 and Figure 8, and the output of the chip device corresponds to the sending operation in the above-mentioned embodiment shown in Figure 2 and Figure 8 operate.

Optionally, the processor is coupled to the memory through an interface.

Optionally, the chip device further includes a memory in which computer programs or computer instructions are stored.

Wherein, the processor mentioned in any of the above-mentioned places can be a general-purpose central processing unit, a microprocessor, a specific application integrated circuit (application-specific integrated circuit, ASIC), or one or more for controlling the above-mentioned Fig. 2 and An integrated circuit for program execution of the communication processing method of the embodiment shown in FIG. 8 .

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. 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 transmitted from a website, computer, server or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk (solid state disc, SSD)) etc.

The network equipment in each of the above-mentioned device embodiments completely corresponds to the terminal device and the network device or terminal device in the device embodiments, and the corresponding modules or units perform corresponding steps, for example, the transceiver module (transceiver) executes receiving or receiving in the device embodiments. In the sending step, other steps besides sending and receiving may be executed by a processing module (processor). For the functions of the specific units, reference may be made to the corresponding device embodiments. Wherein, there may be one or more processors.

The terms "component", "module", "system" and the like are used in this specification to refer to a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be components. One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between two or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. A component may, for example, be based on a signal having one or more packets of data (e.g., data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet via a signal interacting with other systems). Communicate through local and/or remote processes.

Those of ordinary skill in the art can appreciate that various illustrative logical blocks (illustrative logical blocks) and steps (steps) described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. accomplish. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. A skilled artisan may use different means to implement the described functions for each particular application, but such implementation should not be considered as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing device embodiment, and will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and devices may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

In the above embodiments, the functions of each functional unit may be fully or partially implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions (programs). When the computer program instructions (program) are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. 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 transmitted from a website, computer, server or data center Transmission to another website site, computer, server, or data center by wired (eg, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available medium may be a magnetic medium (such as a floppy disk, a hard disk, or a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (solid state disk, SSD)), etc.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the apparatus described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims

A communication processing method, characterized in that the method comprises:

receiving the precoded channel state information reference signal CSI-RS from the network device;

Determine one or more first weighting coefficients corresponding to each spatial layer according to the CSI-RS, each first weighting coefficient corresponds to a CSI-RS port, and the CSI-RS port is used to send the CSI-RS;

Determining a first reporting sequence, where the first reporting sequence includes: reporting the corresponding first weighting coefficients according to the order of the index size of the CSI-RS port;

sending channel state information CSI to the network device, where the CSI includes first indication information, and the first indication information is used to indicate one or more first weighting factor.
The method according to claim 1, wherein each first weighting coefficient corresponds to a frequency domain offset vector, and the frequency domain offset vector corresponding to each first weighting coefficient is used to determine each first weighting coefficient The frequency domain vectors corresponding to the coefficients, the first reporting order further includes: the first weighting coefficients corresponding to the same CSI-RS port, and the corresponding first weighting coefficients are reported in order of the index size of the frequency domain offset vector.
The method according to claim 2, wherein the first reporting order comprises: corresponding to the first weighting coefficients of the same CSI-RS port, reporting the corresponding first weighting coefficients according to the index of the frequency domain offset vector from small to large. weighting factor.
The method according to claims 1 to 3, wherein the first reporting order comprises: reporting the corresponding first weighting coefficients in ascending order according to the index of the CSI-RS port.
The method according to any one of claims 1 to 4, wherein the CSI-RS is sent through P CSI-RS ports; the first P/2 CSIs in the P CSI-RS ports - The RS port corresponds to the first polarization direction, and the last P/2 CSI-RS ports among the P CSI-RS ports correspond to the second polarization direction; the first reporting order includes:

First report the first weighting coefficient corresponding to the CSI-RS port X in the first polarization direction, and then report the first weighting coefficient corresponding to the CSI-RS port Z in the second polarization direction;

Wherein, the X is an integer greater than or equal to 0 and less than or equal to (P/2-1), the Z is equal to P/2+X, and the P is the number of CSI-RS ports of the network device, P is an integer greater than or equal to 2, the X is the index of the port X, and the Z is the index of the port Z.
The method according to any one of claims 1 to 5, wherein the first reporting order includes: according to the first parameter value P ri1 (l, i, f) corresponding to the first weighting coefficient from small to large Report the corresponding first weighting coefficient in the order of ;

Wherein, the first parameter value P ri1 (l,i,f)=i l *v*M+v*f l +l;

l represents the index of the lth spatial layer, l is an integer greater than or equal to 1 and less than or equal to v, v is the total number of spatial layers, and v is an integer greater than or equal to 1;

i l represents the sequence number of the i-th CSI-RS port among the 2L CSI-RS ports selected by the terminal device on the l-th spatial layer, and the sequence number of the i-th CSI-RS port is the same as the i-th CSI-RS port The index of the CSI-RS port corresponds to, i l is an integer greater than or equal to 0 and less than or equal to 2L-1, and the 2L CSI-RS ports are the CSI selected by the terminal device on the lth spatial layer -The total number of RS ports, the L is an integer greater than or equal to 1 and less than or equal to P/2, and the P is an integer greater than or equal to 2;

f l is the serial number of the f-th frequency-domain offset vector among the M frequency-domain offset vectors selected by the terminal device on the l-th spatial layer, and the serial number of the f-th frequency-domain offset vector is the same as The index of the fth frequency domain offset vector corresponds to, M represents the total number of frequency domain offset vectors selected by the terminal device on the lth spatial layer, and the f l is greater than or equal to 0 and less than or an integer equal to M-1, where M is an integer greater than or equal to 1.
The method according to any one of claims 1 to 5, wherein the first reporting order includes: according to the second parameter value P ri2 (l, i, f) corresponding to the first weighting coefficient from small to large Report the corresponding first weighting coefficient in the order of ;

Among them, P ri2 (l,i,f)=π(i l )*v*M+v*f l +l,

l represents the index of the lth spatial layer, l is an integer greater than or equal to 1 and less than or equal to v, v is the total number of spatial layers, and v is an integer greater than or equal to 1;

i l represents the sequence number of the i-th CSI-RS port among the 2L CSI-RS ports selected by the terminal device on the l-th spatial layer, and the sequence number of the i-th CSI-RS port is the same as the i-th CSI-RS port The index of the CSI-RS port corresponds to, i l is an integer greater than or equal to 0 and less than or equal to 2L-1, and the 2L CSI-RS ports are the CSI selected by the terminal device on the lth spatial layer -The total number of RS ports, the L is an integer greater than or equal to 1 and less than or equal to P/2, and the P is an integer greater than or equal to 2;

f l is the serial number of the f-th frequency-domain offset vector among the M frequency-domain offset vectors selected by the terminal device on the l-th spatial layer, and the serial number of the f-th frequency-domain offset vector is the same as The index of the f-th frequency-domain offset vector corresponds to, M represents the total number of frequency-domain offset vectors selected by the terminal device on the l-th spatial layer, and the f l is greater than or equal to 0 and less than or an integer equal to M-1, where M is an integer greater than or equal to 1;
Indicates the index of the i-th CSI-RS port.
A communication processing method, characterized in that the method comprises:

Sending the precoded channel state information reference signal CSI-RS to the terminal equipment;

receiving channel state information CSI from the terminal device;

Wherein, the CSI includes first indication information, and the first indication information is used to indicate one or more first weighting coefficients corresponding to each spatial layer in the first reporting order, and the one or more first weighting coefficients It is determined according to the CSI-RS, each first weighting coefficient corresponds to a CSI-RS port, and the CSI-RS port is used to send the CSI-RS, and the first reporting sequence includes: according to the CSI-RS The index size of the port reports the corresponding first weighting coefficient in sequence.
The method according to claim 8, wherein each first weighting coefficient corresponds to a frequency domain offset vector, and the frequency domain offset vector corresponding to each first weighting coefficient is used to determine each of the first weighting coefficients A frequency domain vector corresponding to a weighting coefficient, the first reporting order further includes: the first weighting coefficient corresponding to the same CSI-RS port, and reporting the corresponding first weighting coefficient according to the index size of the frequency domain offset vector.
The method according to claim 9, wherein the first reporting order comprises: corresponding to the first weighting coefficients of the same CSI-RS port, reporting the corresponding first weighting coefficients according to the index of the frequency domain offset vector from small to large. weighting factor.
The method according to any one of claims 8 to 10, wherein the first reporting order comprises: reporting the corresponding first weighting coefficients in ascending order according to the index of the CSI-RS port.
The method according to any one of claims 8 to 11, wherein the sending the precoded channel state information reference signal CSI-RS to the terminal device includes:

sending the CSI-RS through P CSI-RS ports;

The first P/2 CSI-RS ports among the P CSI-RS ports correspond to the first polarization direction, and the last P/2 CSI-RS ports among the P CSI-RS ports correspond to the second polarization direction;

The first reporting sequence includes: first reporting the first weighting coefficient corresponding to the CSI-RS port X in the first polarization direction, and then reporting the first weighting coefficient corresponding to the CSI-RS port Z in the second polarization direction;

Wherein, the X is an integer greater than or equal to 0 and less than or equal to (P/2-1), the Z is equal to P/2+X, and the P is the number of CSI-RS ports of the network device , P is an integer greater than or equal to 2, the X is the index of the port X, and the Z is the index of the port Z.
The method according to any one of claims 8 to 11, wherein the first reporting sequence includes: according to the first parameter value P ri1 (l, i, f) corresponding to the first weighting coefficient from small to large Report the corresponding first weighting coefficient in the order of ;

Wherein, the first parameter value P ri1 (l,i,f)=i l *v*M+v*f l +l;

l represents the index of the lth spatial layer, l is an integer greater than or equal to 1 and less than or equal to v, v is the total number of spatial layers, and v is an integer greater than or equal to 1;

i l represents the sequence number of the i-th CSI-RS port among the 2L CSI-RS ports selected by the terminal device on the l-th spatial layer, and the sequence number of the i-th CSI-RS port is the same as the i-th CSI-RS port The index of the CSI-RS port corresponds to, i l is an integer greater than or equal to 0 and less than or equal to 2L-1, and the 2L CSI-RS ports are the CSI selected by the terminal device on the lth spatial layer -The total number of RS ports, the L is an integer greater than or equal to 1 and less than or equal to P/2, and the P is an integer greater than or equal to 2;

f l is the sequence number in the f-th frequency-domain offset vector among the M frequency-domain offset vectors selected by the terminal device on the l-th spatial layer, and the sequence number of the f-th frequency-domain offset vector Corresponding to the index of the f-th frequency-domain offset vector, M represents the total number of frequency-domain offset vectors selected by the terminal device on the l-th spatial layer, and the f l is greater than or equal to 0 and An integer less than or equal to M-1, where M is an integer greater than or equal to 1.
The method according to any one of claims 8 to 12, wherein the first reporting sequence includes: according to the second parameter value P ri2 (l, i, f) corresponding to the first weighting coefficient from small to large Report the corresponding first weighting coefficient in the order of ;

Among them, P ri2 (l,i,f)=π(i l )*v*M+v*f l +l,

l represents the index of the lth spatial layer, l is an integer greater than or equal to 1 and less than or equal to v, v is the total number of spatial layers, and v is an integer greater than or equal to 1;

i l represents the sequence number of the i-th CSI-RS port among the 2L CSI-RS ports selected by the terminal device on the l-th spatial layer, and the sequence number of the i-th CSI-RS port is the same as the i-th CSI-RS port The index of the CSI-RS port corresponds to, i l is an integer greater than or equal to 0 and less than or equal to 2L-1, and the 2L CSI-RS ports are the CSI selected by the terminal device on the lth spatial layer -The total number of RS ports, the L is an integer greater than or equal to 1 and less than or equal to P/2, and the P is an integer greater than or equal to 2;

f l is the serial number of the f-th frequency-domain offset vector among the M frequency-domain offset vectors selected by the terminal device on the l-th spatial layer, and the serial number of the f-th frequency-domain offset vector is the same as The index of the f-th frequency-domain offset vector corresponds to, M represents the total number of frequency-domain offset vectors selected by the terminal device on the l-th spatial layer, and the f l is greater than or equal to 0 and less than or an integer equal to M-1, where M is an integer greater than or equal to 1;
Indicates the index of the i-th CSI-RS port.
A communication processing method, characterized in that the method comprises:

receiving second indication information from the network device, where the second indication information is used to indicate an adjustment parameter of an index selection range of a channel state information reference signal CSI-RS port;

Determine the first indication field for indicating the index of the CSI-RS port in the strongest coefficient indication SCI according to the adjustment parameter;

sending the SCI to the network device, the first indication field in the SCI indicates the index of the CSI-RS port corresponding to the largest first weighting coefficient in the first spatial layer, and the largest first weighting coefficient in the first spatial layer A weighting coefficient is determined according to the CSI-RS sent by the network device.
The method according to claim 15, wherein the number of bits of the first indication field is
The K=α*2L, the 2L is the number of CSI-RS ports selected by the terminal device on the first spatial layer, the α is the adjustment parameter, and the α is greater than 0 and less than or equal to 1, The L is an integer greater than or equal to 1 and less than or equal to P/2, and the P is an integer greater than or equal to 2.
The method according to claim 15 or 16, characterized in that the value of the adjustment parameter α is 1/2, 1/4, or 1.
The method according to any one of claims 15 to 17, wherein the SCI is further used to indicate an index of a frequency domain offset vector corresponding to the largest first weighting coefficient.
The method according to claim 18, wherein the total number of bits occupied by the SCI is
or,

Wherein, M is the number of frequency domain offset vectors selected by the terminal device on the first spatial layer, the M is an integer greater than or equal to 1, the K=α*2L, and the 2L is the terminal The number of CSI-RS ports selected by the device on the first spatial layer, the α is the adjustment parameter, the α is greater than 0 and less than or equal to 1, and the L is greater than or equal to 1 and less than or equal to P /2, the P is an integer greater than or equal to 2.
A communication processing method, characterized in that the method comprises:

Sending second indication information to the terminal device, where the second indication information is used to indicate an adjustment parameter of an index selection range of a channel state information reference signal CSI-RS port, and the adjustment parameter is used for the terminal device to determine the strongest coefficient indication A first indication field used to indicate the index of the CSI-RS port in the SCI;

receiving the SCI from the terminal device, the first indication field in the SCI indicates the index of the CSI-RS port corresponding to the largest first weighting coefficient in the first spatial layer, and the largest in the first spatial layer The first weighting coefficient is determined according to the CSI-RS.
The method according to claim 20, wherein the number of bits of the first indication field is
The K=α*2L, the 2L is the total number of CSI-RS ports selected by the terminal device on the first spatial layer, the α is the adjustment parameter, and the α is greater than 0 and less than or equal to 1 , the L is an integer greater than or equal to 1 and less than or equal to P/2, and the P is an integer greater than or equal to 2.
The method according to claim 20 or 21, characterized in that the value of the adjustment parameter α is 1/2, 1/4, or 1.
The method according to any one of claims 20 to 22, wherein the SCI is further used to indicate an index of a frequency domain offset vector corresponding to the largest first weighting coefficient.
The method according to claim 23, wherein the total number of bits occupied by the SCI is
or,

Wherein, M is the total number of frequency domain offset vectors selected by the terminal device on the first spatial layer, the M is an integer greater than or equal to 1, the K=α*2L, and the 2L is the terminal The total number of CSI-RS ports selected by the device on the first spatial layer, the α is the adjustment parameter, the α is greater than 0 and less than or equal to 1, and the L is greater than or equal to 1 and less than or equal to An integer of P/2, where P is an integer greater than or equal to 2.
A communication device, characterized in that the communication device includes:

A transceiver module, configured to receive a precoded channel state information reference signal CSI-RS from a network device;

A processing module, configured to determine one or more first weighting coefficients corresponding to each spatial layer according to the CSI-RS, each first weighting coefficient corresponds to a CSI-RS port, and the CSI-RS port is used to send the The CSI-RS; determining the first reporting order, the first reporting order includes: reporting the corresponding first weighting coefficients according to the order of the index size of the CSI-RS port;

The transceiver module is further configured to send channel state information CSI to the network device, the CSI includes first indication information, and the first indication information is used to indicate each spatial layer according to the first reporting order Corresponding one or more first weighting coefficients.
The communication device according to claim 25, wherein each first weighting coefficient corresponds to a frequency domain offset vector, and the frequency domain offset vector corresponding to each first weighting coefficient is used to determine each first The frequency domain vectors corresponding to the weighting coefficients, the first reporting order further includes: the first weighting coefficients corresponding to the same CSI-RS port, and the corresponding first weighting coefficients are reported in order of the index size of the frequency domain offset vector.
The communication device according to claim 26, wherein the first reporting sequence includes: the first weighting coefficient corresponding to the same CSI-RS port, and reporting the corresponding first weighting coefficient according to the index of the frequency domain offset vector from small to large A weighting factor.
The communication device according to any one of claims 25 to 27, wherein the first reporting order includes: reporting the corresponding first weighting coefficients in ascending order according to the index of the CSI-RS port.
The communication device according to any one of claims 25 to 28, wherein the CSI-RS is sent through P CSI-RS ports; the first P/2 of the P CSI-RS ports The CSI-RS port corresponds to the first polarization direction, and the last P/2 CSI-RS ports among the P CSI-RS ports correspond to the second polarization direction; the first reporting order includes:

First report the first weighting coefficient corresponding to the CSI-RS port X in the first polarization direction, and then report the first weighting coefficient corresponding to the CSI-RS port Z in the second polarization direction;

Wherein, the X is an integer greater than or equal to 0 and less than or equal to (P/2-1), the Z is equal to P/2+X, and the P is the number of CSI-RS ports of the network device, P is an integer greater than or equal to 2, the X is the index of the port X, and the Z is the index of the port Z.
The communication device according to any one of claims 25 to 28, wherein the first reporting order includes: according to the first parameter value P ri1 (l, i, f) corresponding to the first weighting coefficient from small to Report the corresponding first weighting coefficient in the order of the largest;

Wherein, the first parameter value P ri1 (l,i,f)=i l *v*M+v*f l +l;

l represents the index of the lth spatial layer, l is an integer greater than or equal to 1 and less than or equal to v, v is the total number of spatial layers, and v is an integer greater than or equal to 1;

i l represents the sequence number of the i-th CSI-RS port among the 2L CSI-RS ports selected by the terminal device on the l-th spatial layer, and the sequence number of the i-th CSI-RS port is the same as the i-th CSI-RS port The index of the CSI-RS port corresponds to, i l is an integer greater than or equal to 0 and less than or equal to 2L-1, and the 2L CSI-RS ports are the CSI selected by the terminal device on the lth spatial layer -The total number of RS ports, the L is an integer greater than or equal to 1 and less than or equal to P/2, and the P is an integer greater than or equal to 2;

f l is the serial number of the f-th frequency-domain offset vector among the M frequency-domain offset vectors selected by the terminal device on the l-th spatial layer, and the serial number of the f-th frequency-domain offset vector is the same as The index of the f-th frequency-domain offset vector corresponds to, M represents the total number of frequency-domain offset vectors selected by the terminal device on the l-th spatial layer, and the f l is greater than or equal to 0 and less than or an integer equal to M-1, where M is an integer greater than or equal to 1.
The communication device according to any one of claims 25 to 29, wherein the first reporting sequence includes: according to the second parameter value P ri2 (l, i, f) corresponding to the first weighting coefficient from small to Report the corresponding first weighting coefficient in the order of the largest;

Among them, P ri2 (l,i,f)=π(i l )*v*M+v*f l +l,

l represents the index of the lth spatial layer, l is an integer greater than or equal to 1 and less than or equal to v, v is the total number of spatial layers, and v is an integer greater than or equal to 1;

i l represents the sequence number of the i-th CSI-RS port among the 2L CSI-RS ports selected by the terminal device on the l-th spatial layer, and the sequence number of the i-th CSI-RS port is the same as the i-th CSI-RS port The index of the CSI-RS port corresponds to, i l is an integer greater than or equal to 0 and less than or equal to 2L-1, and the 2L CSI-RS ports are the CSI selected by the terminal device on the lth spatial layer -The total number of RS ports, the L is an integer greater than or equal to 1 and less than or equal to P/2, and the P is an integer greater than or equal to 2;

f l is the serial number of the f-th frequency-domain offset vector among the M frequency-domain offset vectors selected by the terminal device on the l-th spatial layer, and the serial number of the f-th frequency-domain offset vector is the same as The index of the f-th frequency-domain offset vector corresponds to, M represents the total number of frequency-domain offset vectors selected by the terminal device on the l-th spatial layer, and the f l is greater than or equal to 0 and less than or an integer equal to M-1, where M is an integer greater than or equal to 1;
Indicates the index of the i-th CSI-RS port.
A communication device, characterized in that the communication device includes:

A transceiver module, configured to send a precoded channel state information reference signal CSI-RS to the terminal device; receive channel state information CSI from the terminal device;

Wherein, the CSI includes first indication information, and the first indication information is used to indicate one or more first weighting coefficients corresponding to each spatial layer in the first reporting order, and the one or more first weighting coefficients It is determined according to the CSI-RS, each first weighting coefficient corresponds to a CSI-RS port, and the CSI-RS port is used to send the CSI-RS, and the first reporting sequence includes: according to the CSI-RS The index size of the port reports the corresponding first weighting coefficient in sequence.
The communication device according to claim 32, wherein each first weighting coefficient corresponds to a frequency domain offset vector, and the frequency domain offset vector corresponding to each first weighting coefficient is used to determine each The frequency domain vector corresponding to the first weighting coefficient, the first reporting sequence further includes: the first weighting coefficient corresponding to the same CSI-RS port, and the corresponding first weighting coefficient is reported according to the index size of the frequency domain offset vector.
The communication device according to claim 33, wherein the first reporting sequence includes: corresponding to the first weighting coefficient of the same CSI-RS port, reporting the corresponding first weighting coefficient according to the index of the frequency domain offset vector from small to large A weighting factor.
The communication device according to any one of claims 32 to 34, wherein the first reporting order includes: reporting the corresponding first weighting coefficients in ascending order according to the index of the CSI-RS port.
The communication device according to any one of claims 32 to 35, wherein the transceiver module is specifically used for:

sending the CSI-RS through P CSI-RS ports;

The first P/2 CSI-RS ports among the P CSI-RS ports correspond to the first polarization direction, and the last P/2 CSI-RS ports among the P CSI-RS ports correspond to the second polarization direction;

The first reporting sequence includes: first reporting the first weighting coefficient corresponding to the CSI-RS port X in the first polarization direction, and then reporting the first weighting coefficient corresponding to the CSI-RS port Z in the second polarization direction;

Wherein, the X is an integer greater than or equal to 0 and less than or equal to (P/2-1), the Z is equal to P/2+X, and the P is the number of CSI-RS ports of the network device , P is an integer greater than or equal to 2, the X is the index of the port X, and the Z is the index of the port Z.
The communication device according to any one of claims 32 to 35, wherein the first reporting order includes: according to the first parameter value P ri1 (l, i, f) corresponding to the first weighting coefficient from small to Report the corresponding first weighting coefficient in the order of the largest;

Wherein, the first parameter value P ri1 (l,i,f)=i l *v*M+v*f l +l;

l represents the index of the lth spatial layer, l is an integer greater than or equal to 1 and less than or equal to v, v is the total number of spatial layers, and v is an integer greater than or equal to 1;

i l represents the sequence number of the i-th CSI-RS port among the 2L CSI-RS ports selected by the terminal device on the l-th spatial layer, and the sequence number of the i-th CSI-RS port is the same as the i-th CSI-RS port The index of the CSI-RS port corresponds to, i l is an integer greater than or equal to 0 and less than or equal to 2L-1, and the 2L CSI-RS ports are the CSI selected by the terminal device on the lth spatial layer -The total number of RS ports, the L is an integer greater than or equal to 1 and less than or equal to P/2, and the P is an integer greater than or equal to 2;

f l is the sequence number in the f-th frequency-domain offset vector among the M frequency-domain offset vectors selected by the terminal device on the l-th spatial layer, and the sequence number of the f-th frequency-domain offset vector Corresponding to the index of the f-th frequency-domain offset vector, M represents the total number of frequency-domain offset vectors selected by the terminal device on the l-th spatial layer, and the f l is greater than or equal to 0 and An integer less than or equal to M-1, where M is an integer greater than or equal to 1.
The communication device according to any one of claims 32 to 36, wherein the first reporting order includes: according to the second parameter value P ri2 (l, i, f) corresponding to the first weighting coefficient from small to Report the corresponding first weighting coefficient in the order of the largest;

Among them, P ri2 (l,i,f)=π(i l )*v*M+v*f l +l,

l represents the index of the lth spatial layer, l is an integer greater than or equal to 1 and less than or equal to v, v is the total number of spatial layers, and v is an integer greater than or equal to 1;

i l represents the sequence number of the i-th CSI-RS port among the 2L CSI-RS ports selected by the terminal device on the l-th spatial layer, and the sequence number of the i-th CSI-RS port is the same as the i-th CSI-RS port The index of the CSI-RS port corresponds to, i l is an integer greater than or equal to 0 and less than or equal to 2L-1, and the 2L CSI-RS ports are the CSI selected by the terminal device on the lth spatial layer -The total number of RS ports, the L is an integer greater than or equal to 1 and less than or equal to P/2, and the P is an integer greater than or equal to 2;

f l is the serial number of the f-th frequency-domain offset vector among the M frequency-domain offset vectors selected by the terminal device on the l-th spatial layer, and the serial number of the f-th frequency-domain offset vector is the same as The index of the f-th frequency-domain offset vector corresponds to, M represents the total number of frequency-domain offset vectors selected by the terminal device on the l-th spatial layer, and the f l is greater than or equal to 0 and less than or an integer equal to M-1, where M is an integer greater than or equal to 1;
Indicates the index of the i-th CSI-RS port.
A communication device, characterized in that the communication device includes:

A transceiver module, configured to receive second indication information from a network device, where the second indication information is used to indicate an adjustment parameter of an index selection range of a channel state information reference signal CSI-RS port;

A processing module, configured to determine, according to the adjustment parameter, the first indication field in the strongest coefficient indication SCI used to indicate the index of the CSI-RS port;

The transceiver module is further configured to send the SCI to the network device, the first indication field in the SCI indicates the index of the CSI-RS port corresponding to the largest first weighting coefficient in the first spatial layer, the The largest first weighting coefficient in the first spatial layer is determined according to the CSI-RS sent by the network device.
The communication device according to claim 39, wherein the number of bits of the first indication field is
The K=α*2L, the 2L is the number of CSI-RS ports selected by the terminal device on the first spatial layer, the α is the adjustment parameter, and the α is greater than 0 and less than or equal to 1, The L is an integer greater than or equal to 1 and less than or equal to P/2, and the P is an integer greater than or equal to 2.
The communication device according to claim 39 or 40, wherein the value of the adjustment parameter α is 1/2, 1/4, or 1.
The communication device according to any one of claims 39 to 41, wherein the SCI is further used to indicate an index of a frequency domain offset vector corresponding to the largest first weighting coefficient.
The communication device according to claim 42, wherein the total number of bits occupied by the SCI is
or,

Wherein, M is the number of frequency domain offset vectors selected by the terminal device on the first spatial layer, the M is an integer greater than or equal to 1, the K=α*2L, and the 2L is the terminal The number of CSI-RS ports selected by the device on the first spatial layer, the α is the adjustment parameter, the α is greater than 0 and less than or equal to 1, and the L is greater than or equal to 1 and less than or equal to P /2, the P is an integer greater than or equal to 2.
A communication device, characterized in that the communication device includes:

A transceiver module, configured to send second indication information to the terminal device, where the second indication information is used to indicate an adjustment parameter of an index selection range of a channel state information reference signal CSI-RS port, and the adjustment parameter is used for the terminal device Determine the first indication field in the strongest coefficient indication SCI used to indicate the index of the CSI-RS port; receive the SCI from the terminal device, and the first indication field in the SCI indicates the first indication field in the first spatial layer The index of the CSI-RS port corresponding to the largest first weighting coefficient, where the largest first weighting coefficient in the first spatial layer is determined according to the CSI-RS.
The communication device according to claim 44, wherein the number of bits of the first indication field is
The K=α*2L, the 2L is the total number of CSI-RS ports selected by the terminal device on the first spatial layer, the α is the adjustment parameter, and the α is greater than 0 and less than or equal to 1 , the L is an integer greater than or equal to 1 and less than or equal to P/2, and the P is an integer greater than or equal to 2.
The communication device according to claim 44 or 45, wherein the value of the adjustment parameter α is 1/2, 1/4, or 1.
The communication device according to any one of claims 44 to 46, wherein the SCI is also used to indicate the index of the frequency domain offset vector corresponding to the largest first weighting coefficient.
The communication device according to claim 47, wherein the total number of bits occupied by the SCI is
or,

Wherein, M is the total number of frequency domain offset vectors selected by the terminal device on the first spatial layer, the M is an integer greater than or equal to 1, the K=α*2L, and the 2L is the terminal The total number of CSI-RS ports selected by the device on the first spatial layer, the α is the adjustment parameter, the α is greater than 0 and less than or equal to 1, and the L is greater than or equal to 1 and less than or equal to An integer of P/2, where P is an integer greater than or equal to 2.
A communication device, characterized in that the communication device includes a processor, and the processor is configured to execute a computer program or a computer instruction in the memory to perform the method according to any one of claims 1 to 7 , or, to perform the method as described in any one of claims 15-19.
A communication device, characterized in that the communication device includes a processor, and the processor is configured to execute a computer program or a computer instruction in the memory to perform the method according to any one of claims 8 to 14 , or, to perform the method as described in any one of claims 20-24.
A computer-readable storage medium, which is characterized in that it includes computer instructions. When the computer instructions are run on the computer, the computer is made to perform the method according to any one of claims 1 to 7, or to make the The computer executes the method according to any one of claims 8 to 14, or makes the computer execute the method according to any one of claims 15 to 19, or makes the computer execute the method according to claim 20 The method described in any one of to 24.
A computer program product, characterized in that it includes computer-executable instructions, and when the computer-executable instructions are run on a computer, the computer is made to perform the method according to any one of claims 1 to 7, or the The computer executes the method according to any one of claims 8 to 14, or makes the computer execute the method according to any one of claims 15 to 19, or makes the computer execute the method according to claim 20 The method described in any one of to 24.