CN109802711B - Method for determining uplink multi-antenna transmission codebook, network equipment and terminal equipment - Google Patents

Abstract

The invention discloses a method, network equipment and terminal equipment for determining an uplink multi-antenna transmission codebook. The method includes: receiving terminal capability information sent by the terminal equipment, where the terminal capability information includes antenna port information, and the antenna port information is used for to indicate the coherence between the antenna ports of the terminal device; according to the antenna port information and the number of data streams of the terminal device, determine the transmission codebook of the terminal device; send the instruction information of the transmission codebook to the terminal device. The present invention determines the transmission codebook of the terminal device based on the antenna port information in the terminal capability information and the number of data streams of the terminal device, so that the codebook determined for the terminal device matches the coherence situation between the antenna port of the terminal device, thereby Improved system performance.

Description

Method, network device and terminal device for determining uplink multi-antenna transmission codebook

technical field

The present invention relates to the field of communications, and in particular, to a method, network equipment and terminal equipment for determining an uplink multi-antenna transmission codebook.

Background technique

In future communication systems, codebook-based multi-stream transmission under a Cyclic Prefix (CP) orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) waveform will be adopted. For terminal equipment that supports multiple antennas, due to the different process designs of various manufacturers, the antenna placement positions are also different, and the coherence between the antenna ports between terminal equipment is also different.

Using the current method for determining the transmission codebook will affect the performance of the communication system in some scenarios.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to provide a method, terminal device and network side device for determining an uplink multi-antenna transmission codebook, so as to solve the problem that the current transmission codebook determination method affects the performance of the communication system in some scenarios.

In a first aspect, a method for determining an uplink multi-antenna transmission codebook is provided, the method comprising:

receiving terminal capability information sent by a terminal device, where the terminal capability information includes antenna port information, where the antenna port information is used to indicate coherence between antenna ports of the terminal device;

Determine the transmission codebook of the terminal device according to the antenna port information and the number of data streams of the terminal device;

Send the indication information of the transmission codebook to the terminal device.

In a second aspect, a method for determining an uplink multi-antenna transmission codebook is provided, the method comprising:

sending terminal capability information, where the terminal capability information includes antenna port information, where the antenna port information is used to indicate the coherence between the antenna ports of the terminal device;

Receive indication information of a transmission codebook, where the transmission codebook is determined by the network device according to the antenna port information and the number of data streams of the terminal device.

In a third aspect, a network device is provided, and the network device includes:

a transceiver module, configured to receive terminal capability information sent by a terminal device, where the terminal capability information includes antenna port information, and the antenna port information is used to indicate coherence between antenna ports of the terminal device;

a processing module, configured to determine the transmission codebook of the terminal device according to the antenna port information and the number of data streams of the terminal device;

The transceiver module is further configured to send the indication information of the transmission codebook to the terminal device.

In a fourth aspect, a terminal device is provided, and the terminal device includes:

a sending module, configured to send terminal capability information, where the terminal capability information includes antenna port information, and the antenna port information is used to indicate the coherence between the antenna ports of the terminal device;

A receiving module, configured to receive indication information of a transmission codebook, where the transmission codebook is determined by the network device according to the antenna port information and the number of data streams of the terminal device.

In a fifth aspect, a network device is provided, the terminal device includes a processor, a memory, and a computer program stored on the memory and executable on the processor, when the computer program is executed by the processor The steps of implementing the method for determining an uplink multi-antenna transmission codebook according to the first aspect are implemented.

In a sixth aspect, a terminal device is provided, the terminal device includes a processor, a memory, and a computer program stored on the memory and executable on the processor, when the computer program is executed by the processor The steps of implementing the method for determining an uplink multi-antenna transmission codebook according to the second aspect.

In a seventh aspect, a computer-readable storage medium is provided, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the determination of uplink multiple antennas as described in the second aspect is realized. Steps of a method of transmitting a codebook.

In an eighth aspect, a computer-readable storage medium is provided, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the determination of the uplink multiple antennas as described in the second aspect is realized. Steps of a method of transmitting a codebook.

In the embodiment of the present invention, the transmission codebook of the terminal device is determined based on the antenna port information in the terminal capability information and the number of data streams of the terminal device, so that the codebook determined for the terminal device and the antenna port of the terminal device have a difference between the codebook and the terminal device. The coherent case is matched, thereby improving system performance.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

FIG. 1 is a schematic flowchart of a method for determining an uplink multi-antenna transmission codebook according to an embodiment of the present invention.

FIG. 2 is a schematic flowchart of a method for determining an uplink multi-antenna transmission codebook according to another embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a network device according to an embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.

FIG. 5 is a schematic structural diagram of a network device according to another embodiment of the present invention.

FIG. 6 is a schematic structural diagram of a terminal device according to another embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The technical solution of the present invention can be applied to various communication systems, such as: Global System for Mobile Communication (GSM, Global System of Mobile communication), Code Division Multiple Access (CDMA, Code Division Multiple Access) system, Wideband Code Division Multiple Access (WCDMA) , Wideband Code Division Multiple Access), General Packet Radio Service (GPRS, General Packet Radio Service), Long Term Evolution (LTE, Long Term Evolution)/Enhanced Long Term Evolution (LTE-A, Long Term Evolution advanced), NR (New Radio), etc. .

A user terminal (UE, User Equipment), also known as a mobile terminal (Mobile Terminal), mobile user equipment, etc., can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network). , the user equipment may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, may be a portable, pocket-sized, hand-held, computer-built-in or vehicle-mounted mobile device, which is associated with The radio access network exchanges language and/or data.

The base station can be a base station (BTS, Base Transceiver Station) in GSM or CDMA, a base station (NodeB) in WCDMA, or an evolved base station (eNB or e-NodeB, evolutional NodeB) in LTE and 5G The present invention is not limited to the base station (gNB), but for the convenience of description, the following embodiments take the gNB as an example for description.

The technical solutions provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a flowchart of a method for determining an uplink multi-antenna transmission codebook according to an embodiment of the present invention. The method of FIG. 1 is applied to and executed by a network device. The method may include:

S110: Receive terminal capability information sent by a terminal device, where the terminal capability information includes antenna port information, where the antenna port information is used to indicate coherence between antenna ports of the terminal device.

For example, the antenna port information indicates whether the antenna of the terminal device is fully coherent (Full Coherence), partially coherent (Partial Coherence) or completely non-coherence (Non-Coherence).

S120: Determine a transmission codebook of the terminal device according to the antenna port information and the number of data streams of the terminal device.

Optionally, step S120 can be specifically implemented as:

The transmission codebook of the terminal device is determined according to the antenna port information, the number of data streams of the terminal device, and the antenna port to which the data streams of the terminal device are mapped.

Optionally, in some embodiments, the transmission codebook includes an antenna selection codebook, or the transmission codebook is determined based on the antenna selection codebook. Correspondingly, the network device determines the antenna selection codebook according to the antenna port information and the number of data streams of the terminal device.

For example, if the antenna port information indicates that the antennas of the terminal device are completely irrelevant, the antenna selection codebook is the transmission codebook. If the antenna of the terminal device is partially coherent, the transmission codebook is a codebook determined based on the antenna codebook. For example, the antenna of the terminal device is completely irrelevant, and if the number of data streams of the terminal device is 1, the transmission codebook is one of the following transmission codebooks:

If the antenna of the terminal device is completely irrelevant, and the number of data streams of the terminal device is 2, the transmission codebook is one of the following transmission codebooks:

If the antenna of the terminal device is completely irrelevant, and the number of data streams of the terminal device is 3, the transmission codebook is one of the following transmission codebooks:

If the antenna of the terminal device is completely irrelevant, and the number of data streams of the terminal device is 3, the transmission codebook is:

Optionally, in some embodiments, the antenna ports of the terminal device are partially coherent; wherein, S120 may be specifically implemented as: determining the antenna selection codebook according to the number of data streams of the terminal device and the antenna ports to which the data streams are mapped .

Further, the transmission codebook includes an antenna selection codebook and a phase matching codebook, or the transmission codebook is determined based on the antenna selection codebook and the phase matching codebook. In this case, the above method may include: determining a phase matching codebook according to the phase of the transmission channel corresponding to the antenna port to which the data stream is mapped.

Optionally, in some embodiments, when the transmission codebook includes an antenna selection codebook and a phase matching codebook, the indication information includes first indication information for indicating the antenna selection codebook and first indication information for indicating the phase matching codebook. second indication information. This situation can be understood as: the network device may instruct the transmission codebook twice, the first time using the first indication information to instruct the antenna selection codebook, and the second time using the second indication information to instruct the phase matching codebook.

Optionally, in some embodiments, the transmission codebook is determined based on the antenna selection codebook and the phase matching codebook, and the above method further includes: determining the transmission codebook based on the antenna selection codebook and the phase matching codebook. In this case, if the number of data streams of the terminal device is 1, and 1 data stream is mapped to 2 coherent antenna ports, a codebook is determined from the following codebooks as the antenna selection codebook:

And determine a codebook from the following codebooks as the phase matching codebook:

Then, determine the transmission codebook according to the determined antenna selection codebook and phase matching codebook, assuming that the terminal antenna port coherence relationship is pre-specified: when partially coherent, it is assumed that port 1 and port 2 are coherent, and port 2 and port 4 are coherent. , select the codebook from the codebook index numbers 0-7 in Table 1. When completely irrelevant, each of the 4 ports is irrelevant. Select a codebook from table 1 codebook index numbers 8-11. After the network device determines the transmission codebook of the terminal device, the indication information sent to the terminal device indicates the index value, and the terminal device can determine the transmission codebook according to the specific index value and Table 1. It should be noted that, in the embodiment of the present invention, the number of data streams may be understood as the number of transport layers (Layer).

Table 1

Optionally, in some embodiments, the transmission codebook is determined based on the antenna selection codebook and the phase matching codebook, and the above method further includes: determining the transmission codebook based on the antenna selection codebook and the phase matching codebook. In this case, if the number of data streams of the terminal equipment is 2, and the 2 data streams are mapped to the same coherent antenna port, a codebook is determined from the following codebooks as the antenna selection codebook:

And determine a codebook from the following codebooks as the phase matching codebook:

Then, determine the transmission codebook according to the determined antenna selection codebook and phase matching codebook, assuming that the terminal antenna port coherence relationship is pre-specified: when partially coherent, it is assumed that port 1 and port 2 are coherent, and port 2 and port 4 are coherent. , select the codebook from the codebook index number 0-19 in Table 2. When completely irrelevant, each of the four ports is irrelevant, and the codebook is selected from the codebook index numbers 20-25 in Table 2. After the network device determines the transmission codebook of the terminal device, the indication information sent to the terminal device indicates the index value, and the terminal device can determine the transmission codebook according to the specific index value and Table 2.

Table 2

Optionally, in some embodiments, the transmission codebook is determined based on the antenna selection codebook and the phase matching codebook, and the above method further includes: determining the transmission codebook based on the antenna selection codebook and the phase matching codebook. In this case, if the number of data streams of the terminal device is 2, and the 2 data streams are mapped to different coherent antenna ports, a codebook is determined from the following codebooks as the antenna selection codebook:

Wherein, the phase matching codebook is determined according to the phase of the transmission channel corresponding to the antenna port to which the data stream is mapped, including:

It is determined that the phase matching codebook includes a first phase matching codebook and a second phase matching codebook, and the first phase matching codebook is based on the transmission corresponding to the coherent antenna port mapped to the first data stream in the two data streams The phase of the channel is determined, and the second phase matching codebook is determined according to the phase of the transmission channel corresponding to the antenna port to which the second data stream in the two data streams is mapped, wherein one of the following codebooks is determined respectively. The codebook is used as the first phase matching codebook and the second phase matching codebook:

And then determine the transmission codebook according to the determined antenna selection codebook and the phase matching codebook, the determined transmission codebook can be the codebook shown in the aforementioned Table 2, and Table 2 provides the corresponding relationship between the codebook index and the codebook , after the network device determines the transmission codebook of the terminal device, the indication information sent to the terminal device indicates the index value, and the terminal device can determine the transmission codebook according to the specific index value and Table 2.

Optionally, in some embodiments, the transmission codebook is determined based on the antenna selection codebook and the phase matching codebook, and the above method further includes: determining the transmission codebook based on the antenna selection codebook and the phase matching codebook. In this case, if the number of data streams of the terminal device is 3, and the first data stream and the second data stream among the 3 data streams are mapped to the same coherent antenna port, the third data stream among the 3 data streams is mapped to the same coherent antenna port. When the stream is mapped to an antenna port that is irrelevant to the antenna port to which the first data stream and the second data stream are mapped, a codebook is determined from the following codebooks for the antenna selection codebook:

Wherein, the phase matching codebook is determined according to the phase of the transmission channel corresponding to the antenna port to which the data stream is mapped, and the specific implementation is as follows:

It is determined that the phase matching codebook includes a first phase matching codebook and a second phase matching codebook, and the first phase matching codebook is corresponding to the coherent antenna ports to which the first data stream and the second data stream are mapped The phase of the transmission channel is determined, and the second phase matching codebook is determined according to the phase of the transmission channel corresponding to the antenna port to which the third data stream is mapped, wherein the first phase matching codebook is one of the following phase matching codebooks A kind of:

The second phase matching codebook is one of the following phase matching codebooks:

Then, determine the transmission codebook according to the determined antenna selection codebook and phase matching codebook, assuming that the terminal antenna port coherence relationship is pre-specified: when partially coherent, it is assumed that port 1 and port 2 are coherent, and port 2 and port 4 are coherent. , select the codebook from the codebook index numbers 0-15 in Table 3. When completely irrelevant, each of the four ports is irrelevant, and the codebook is selected from the codebook index numbers 16-19 in Table 3. After the network device determines the transmission codebook of the terminal device, the indication information sent to the terminal device indicates the index value, and the terminal device can determine the transmission codebook according to the specific index value and Table 3.

table 3

Optionally, in some embodiments, the transmission codebook is determined based on the antenna selection codebook and the phase matching codebook, and the above method further includes: determining the transmission codebook based on the antenna selection codebook and the phase matching codebook. In this case, if the number of data streams of the terminal device is 4, and the first data stream and the second data stream among the 4 data streams are mapped to the same coherent antenna port, the third data stream among the 4 data streams is mapped to the same coherent antenna port. When the stream and the fourth data stream are mapped to the same coherent antenna port, and the antenna ports to which the third data stream and the fourth data stream are mapped are not coherent with the antenna ports to which the first data stream and the second data stream are mapped, from the following A codebook is determined in the codebook to select the codebook for the antenna:

The phase matching codebook is determined according to the phase of the transmission channel corresponding to the antenna port to which the data stream is mapped, which can be specifically implemented as:

It is determined that the phase matching codebook includes a first phase matching codebook and a second phase matching codebook, and the first phase matching codebook is corresponding to the coherent antenna ports to which the first data stream and the second data stream are mapped The phase of the transmission channel is determined, and the second phase matching codebook is determined according to the phase of the transmission channel corresponding to the coherent antenna port mapped to the third data stream and the fourth data stream, wherein the first phase matching codebook and The second phase matching codebook is one of the following phase matching codebooks:

Then, determine the transmission codebook according to the determined antenna selection codebook and phase matching codebook, assuming that the terminal antenna port coherence relationship is pre-specified: when partially coherent, it is assumed that port 1 and port 2 are coherent, and port 2 and port 4 are coherent. , select the codebook from the codebook index number 0-3 in Table 4. When completely irrelevant, each of the four ports is irrelevant, and the codebook is selected from the codebook index number 4 in Table 4. After the network device determines the transmission codebook of the terminal device, the indication information sent to the terminal device indicates the index value, and the terminal device can determine the transmission codebook according to the specific index value and Table 4.

Table 4

Optionally, in some embodiments, the antenna ports of the terminal device are fully coherent, and when the number of data streams of the terminal device is less than or equal to 4, the network device determines the transmission codebook corresponding to the terminal device. Codebook generated for Householder based transform. It should be noted that, when the antenna ports of the terminal device are fully coherent, the codebook generated based on the Householder transform is only one way to generate the transmission codebook, and the transmission codebook may also be determined based on other ways.

It should be understood that, in this embodiment of the present invention, the number of data streams of the terminal device and the antenna port to which the data streams of the terminal device are mapped may be collectively referred to as data stream information of the terminal device.

S130: Send the indication information of the transmission codebook to the terminal device.

For example, it is assumed that the terminal device has 4 antenna ports, which are identified as port1, port2, port3, and port4 in sequence. When the terminal supports partial coherence, it is assumed that port1 and port3 are coherent; port2 and port4 are coherent; assuming that the data stream of the terminal device is 3, the antenna selection codebook can only be:

或

or

When the coherent antenna ports mapped to the two data streams are the same, the phase matching codebook can only be:

且另一个数据流映射到其他天线端口，相位匹配码本可以为：

中的任意一种，则针对这种情况，总共有16种码本，网络设备可以通过4bit的指示信息指示终端设备的传输码本。

And another data stream is mapped to other antenna ports, the phase matching codebook can be:

Any one of them, for this situation, there are 16 kinds of codebooks in total, and the network device can indicate the transmission codebook of the terminal device through 4-bit indication information.

In the embodiment of the present invention, the transmission codebook of the terminal device is determined based on the antenna port information in the terminal capability information and the number of data streams of the terminal device, so that the codebook determined for the terminal device and the antenna port of the terminal device have a difference between the codebook and the terminal device. The coherent case is matched, thereby improving system performance.

FIG. 2 is a method for determining an uplink multi-antenna transmission codebook according to another embodiment of the present invention. The method of FIG. 2 can be applied to and executed by a terminal device. The method may include:

S210. Send terminal capability information, where the terminal capability information includes antenna port information, where the antenna port information is used to indicate a coherence situation between antenna ports of the terminal device;

S220: Receive indication information of a transmission codebook, where the transmission codebook is determined by the network device according to the antenna port information and the number of data streams of the terminal device.

Optionally, as an embodiment, the transmission codebook includes an antenna selection codebook, or the transmission codebook is determined based on the antenna selection codebook,

The antenna selection codebook is determined by the network device according to the antenna port information and the number of data streams of the terminal device.

Optionally, as an embodiment, the antenna port of the terminal device is partially coherent;

The antenna selection codebook is determined according to the data stream number of the terminal device and the antenna port to which the data stream is mapped.

Optionally, as an embodiment, the transmission codebook includes an antenna selection codebook and a phase matching codebook, or the transmission codebook is generated based on the antenna selection codebook and the phase matching codebook,

The phase matching codebook is determined according to the phase of the transmission channel corresponding to the antenna port to which the data stream number is mapped.

Optionally, as an embodiment, when the transmission codebook includes an antenna selection codebook and a phase matching codebook, the indication information includes first indication information used to indicate the antenna selection codebook and a phase matching codebook. the second indication information.

In this embodiment of the present invention, the terminal device sends terminal capability information to the network device, where the terminal capability information includes antenna port information, and the antenna port information is used to indicate the coherence between the antenna ports of the terminal device, so that the network device is based on the antenna port information. The transmission codebook of the terminal device is determined by the data stream number of the terminal device, so that the coherence situation between the codebook determined for the terminal device and the antenna port of the terminal device is matched, thereby improving the system performance.

The method for determining an uplink multi-antenna transmission codebook according to an embodiment of the present invention has been described in detail above with reference to FIG. 1 and FIG. 2 , and a network device according to an embodiment of the present invention will be described in detail below with reference to FIG. 3 .

FIG. 3 is a schematic structural diagram of a network device according to an embodiment of the present invention. As shown in FIG. 3, the network device 30 includes:

a transceiver module 31, configured to receive terminal capability information sent by a terminal device, where the terminal capability information includes antenna port information, and the antenna port information is used to indicate coherence between antenna ports of the terminal device;

a processing module 32, configured to determine the transmission codebook of the terminal device according to the antenna port information and the number of data streams of the terminal device;

The transceiver module 31 is further configured to send the instruction information of the transmission codebook to the terminal device.

Optionally, as an embodiment, the transmission codebook includes an antenna selection codebook, or the transmission codebook is determined based on the antenna selection codebook;

The processing module 32 is specifically configured to: determine the antenna selection codebook according to the antenna port information and the number of data streams of the terminal device.

Optionally, as an embodiment, the antenna port information indicates that the antenna ports of the terminal device are partially coherent;

The processing module 32 is specifically configured to: determine the antenna selection codebook according to the number of data streams of the terminal device and the antenna ports to which the data streams are mapped.

Optionally, as an embodiment, the processing module 32 is further configured to: determine a phase matching codebook according to the phase of the transmission channel corresponding to the antenna port to which the data stream is mapped;

The transmission codebook includes the antenna selection codebook and the phase matching codebook, or the transmission codebook is determined based on the antenna selection codebook and the phase matching codebook.

Optionally, as an embodiment, when the transmission codebook includes the antenna selection codebook and the phase matching codebook, the indication information includes first indication information for indicating the antenna selection codebook and second indication information for indicating the phase matching codebook.

Optionally, as an embodiment, when the transmission codebook is determined based on the antenna selection codebook and the phase matching codebook, the processing module 32 is further configured to:

The transmission codebook is determined based on the antenna selection codebook and the phase matching codebook.

Optionally, as an embodiment, the processing module 32 is specifically configured to:

When the number of data streams of the terminal device is 1, and 1 data stream is mapped to 2 coherent antenna ports, a codebook is determined from the following codebooks as the antenna selection codebook:

A codebook is determined as the phase matching codebook from the following codebooks:

Optionally, as an embodiment, the processing module 32 is specifically configured to:

When the number of data streams of the terminal device is 2, and the 2 data streams are mapped to the same coherent antenna port, a codebook is determined from the following codebooks as the antenna selection codebook:

Determining a codebook from the following codebooks is determining the phase matching codebook:

Optionally, as an embodiment, the processing module 32 is specifically configured to:

When the number of data streams of the terminal device is 2, and the 2 data streams are mapped to different coherent antenna ports, a codebook is determined from the following codebooks as the antenna selection codebook:

It is determined that the phase-matching codebook includes a first phase-matching codebook and a second phase-matching codebook, and the first phase-matching codebook corresponds to a coherent antenna port to which the first data stream in the two data streams is mapped. The second phase matching codebook is determined according to the phase of the transmission channel corresponding to the antenna port to which the second data stream of the two data streams is mapped, wherein, respectively from the following codebooks Determine a codebook as the first phase matching codebook and the second phase matching codebook:

Optionally, as an embodiment, the processing module 32 is specifically configured to:

The number of data streams in the terminal device is 3, and the first data stream and the second data stream among the 3 data streams are mapped to the same coherent antenna port, and the third data stream among the 3 data streams is mapped to the same coherent antenna port. When the antenna ports to which the first data stream and the second data stream are mapped are irrelevant antenna ports, a codebook is determined from the following codebooks as the antenna selection codebook:

determining that the phase-matching codebook includes a first phase-matching codebook and a second phase-matching codebook, the first phase-matching codebook is mapped according to the coherence to which the first data stream and the second data stream are mapped The phase of the transmission channel corresponding to the antenna port is determined, and the second phase matching codebook is determined according to the phase of the transmission channel corresponding to the antenna port to which the third data stream is mapped, wherein the first phase matching codebook is One of the following phase-matched codebooks:

The second phase matching codebook is one of the following phase matching codebooks:

Optionally, as an embodiment, the processing module 32 is specifically configured to:

The number of data streams in the terminal device is 4, and the first data stream and the second data stream among the 4 data streams are mapped to the same coherent antenna port, and the third data stream and the fourth data stream among the 4 data streams are mapped to the same coherent antenna port. When the data streams are mapped to the same coherent antenna port, and the antenna ports to which the third data stream and the fourth data stream are mapped are not coherent with the antenna ports to which the first data stream and the second data stream are mapped, determine from the following codebook One codebook is the antenna selection codebook:

determining that the phase-matching codebook includes a first phase-matching codebook and a second phase-matching codebook, the first phase-matching codebook is mapped according to the coherence to which the first data stream and the second data stream are mapped The phase of the transmission channel corresponding to the antenna port is determined, and the second phase matching codebook is determined according to the phase of the transmission channel corresponding to the coherent antenna port that the third data stream and the fourth data stream are mapped to, wherein the first The first phase matching codebook and the second phase matching codebook are one of the following phase matching codebooks:

Optionally, as an embodiment, the processing module 32 is specifically configured to:

When the antenna ports of the terminal device are completely irrelevant and the number of data streams of the terminal device is 1, the transmission codebook is one of the following transmission codebooks:

When the antenna ports of the terminal device are completely irrelevant and the number of data streams of the terminal device is 2, the transmission codebook is one of the following transmission codebooks:

When the antenna ports of the terminal device are completely irrelevant, and the number of data streams of the terminal device is 3, the transmission codebook is one of the following transmission codebooks:

When the antenna ports of the terminal device are completely irrelevant and the number of data streams of the terminal device is 4, the transmission codebook is:

The terminal device provided in the embodiment of the present invention can implement each process implemented by the terminal device in the method embodiment of FIG. 1 , and to avoid repetition, details are not described here.

In the embodiment of the present invention, the transmission codebook of the terminal device is determined based on the antenna port information in the terminal capability information and the number of data streams of the terminal device, so that the codebook determined for the terminal device and the antenna port of the terminal device have a difference between the codebook and the terminal device. The coherent case is matched, thereby improving system performance.

FIG. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in FIG. 4, the terminal device 40 includes:

A sending module 41, configured to send terminal capability information, where the terminal capability information includes antenna port information, and the antenna port information is used to indicate the coherence between the antenna ports of the terminal device;

The receiving module 42 is configured to receive indication information of a transmission codebook, where the transmission codebook is determined by the network device according to the antenna port information and the number of data streams of the terminal device.

Optionally, as an embodiment, the transmission codebook includes an antenna selection codebook, or the transmission codebook is determined based on the antenna selection codebook,

The antenna selection codebook is determined by the network device according to the antenna port information and the number of data streams of the terminal device.

Optionally, as an embodiment, the antenna ports of the terminal device are partially coherent;

The antenna selection codebook is determined according to the number of data streams of the terminal device and the antenna ports to which the data streams are mapped.

Optionally, as an embodiment, the transmission codebook includes an antenna selection codebook and a phase matching codebook, or the transmission codebook is generated based on the antenna selection codebook and the phase matching codebook,

The phase matching codebook is determined according to the phase of the transmission channel corresponding to the antenna port to which the data stream number is mapped.

Optionally, as an embodiment, when the transmission codebook includes an antenna selection codebook and a phase matching codebook, the indication information includes first indication information for indicating the antenna selection codebook and first indication information for indicating phase matching. The second indication information of the codebook.

The terminal device provided in the embodiment of the present invention can implement each process implemented by the terminal device in the method embodiment of FIG. 2 , and to avoid repetition, details are not repeated here.

The terminal device in this embodiment of the present invention sends terminal capability information to the network device, where the terminal capability information includes antenna port information, and the antenna port information is used to indicate the coherence between the antenna ports of the terminal device, so that the network device is based on the antenna port information and the terminal The number of data streams of the device determines the transmission codebook of the terminal device, so that the coherence between the codebook determined for the terminal device and the antenna port of the terminal device is matched, thereby improving the system performance.

FIG. 5 shows a schematic structural diagram of a network device according to another embodiment of the present invention. As shown in FIG. 5, the network device 100 includes a processor 110, a transceiver 120, a memory 130, a user interface 504, and a bus interface. in:

In this embodiment of the present invention, the network device 100 further includes: a computer program stored on the memory 130 and executable on the processor 110 , and the computer program is executed by the processor 110 to achieve the above-mentioned shown in FIG. 1 . Each process in the method can achieve the same technical effect, and in order to avoid repetition, it will not be repeated here.

In FIG. 5 , the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by processor 110 and various circuits of memory represented by memory 130 linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 120 may be multiple elements, ie, including a transmitter and a receiver, providing a means for communicating with various other devices over a transmission medium.

The processor 110 is responsible for managing the bus architecture and general processing, and the memory 130 may store data used by the processor 110 in performing operations.

FIG. 6 shows a schematic structural diagram of a terminal device according to another embodiment of the present invention. As shown in FIG. 6 , the terminal device 200 includes: at least one processor 210 , memory 220 , at least one network interface 230 and user interface 240 . The various components in the receiving end device 200 are coupled together through the bus system 250 . It will be appreciated that the bus system 250 is used to implement connection communication between these components. In addition to the data bus, the bus system 250 also includes a power bus, a control bus and a status signal bus. However, for clarity of illustration, the various buses are labeled as bus system 250 in FIG. 6 .

Among others, the user interface 240 may include a display, a keyboard, or a pointing device (eg, a mouse, a trackball, a touch pad or a touch screen, or the like).

It can be understood that the memory 220 in the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Wherein, the non-volatile memory may be Read-Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (Erasable PROM, EPROM), Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch Link DRAM, SLDRAM) And direct memory bus random access memory (DirectRambus RAM, DRRAM). The memory 220 of the systems and methods described in the embodiments of the present invention is intended to include, but not be limited to, these and any other suitable types of memory.

In some embodiments, memory 220 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set of them: an operating system 221 and applications 222 .

The operating system 221 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application program 222 includes various application programs, such as a media player (Media Player), a browser (Browser), etc., for implementing various application services. A program for implementing the method of the embodiment of the present invention may be included in the application program 222 .

In this embodiment of the present invention, the terminal device 200 further includes: a computer program stored on the memory 220 and executable on the processor 210 , when the computer program is executed by the processor 210, the determination of uplink multi-antenna transmission shown in FIG. 2 is implemented. Each process of the codebook method can achieve the same technical effect, and to avoid repetition, it will not be repeated here.

The methods disclosed in the foregoing embodiments of the present invention may be applied to the processor 210 or implemented by the processor 210 . The processor 210 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method may be completed by an integrated logic circuit of hardware in the processor 210 or an instruction in the form of software. The above-mentioned processor 210 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA), or other possible Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logical block diagrams disclosed in the embodiments of the present invention can be implemented 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 method disclosed in conjunction with the embodiments of the present invention may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other computer-readable storage media that are mature in the art. The computer-readable storage medium is located in the memory 220, and the processor 210 reads the information in the memory 220, and completes the steps of the above method in combination with its hardware. Specifically, a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 210, each step of the method embodiment shown in FIG. 2 is implemented.

It can be understood that the embodiments described in the embodiments of the present invention may be implemented by hardware, software, firmware, middleware, microcode or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more Application Specific Integrated Circuits (ASIC), Digital Signal Processing (DSP), Digital Signal Processing Device (DSP Device, DSPD), programmable logic Devices (ProgrammableLogic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in the present invention or a combination thereof.

For software implementation, the techniques described in the embodiments of the present invention may be implemented through modules (eg, procedures, functions, etc.) that perform the functions described in the embodiments of the present invention. Software codes may be stored in memory and executed by a processor. The memory can be implemented in the processor or external to the processor.

Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, each process of the above-mentioned method for determining an uplink multi-antenna transmission codebook is implemented, and can To achieve the same technical effect, in order to avoid repetition, details are not repeated here. The computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform, and of course hardware can also be used, but in many cases the former is better implementation. Based on this understanding, the technical solutions of the present invention can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products are stored in a storage medium (such as ROM/RAM, magnetic disk, CD-ROM), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present invention.

The embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of the present invention, without departing from the spirit of the present invention and the scope protected by the claims, many forms can be made, which all belong to the protection of the present invention.

Claims (38)

1. A method for determining an uplink multi-antenna transmission codebook is applied to network equipment, and is characterized by comprising the following steps:

receiving terminal capability information sent by terminal equipment, wherein the terminal capability information comprises antenna port information, the antenna port information is used for indicating the coherence condition between antenna ports of the terminal equipment, and the coherence condition between the antenna ports comprises one of complete incoherence of the antenna ports, partial coherence of the antenna ports and coherence of the antenna ports;

determining a transmission codebook of the terminal equipment according to the antenna port information and the data stream number of the terminal equipment;

and sending the indication information of the transmission codebook to the terminal equipment.

2. The method of claim 1, wherein the transmission codebook comprises an antenna selection codebook, or wherein the transmission codebook is determined based on the antenna selection codebook;

wherein, the determining the transmission codebook of the terminal device according to the antenna port information and the data stream number of the terminal device includes:

and determining the antenna selection codebook according to the antenna port information and the data stream number of the terminal equipment.

3. The method of claim 2, wherein the antenna port information indicates that the antenna ports of the terminal devices are partially coherent;

determining the antenna selection codebook according to the antenna port information and the data stream number of the terminal device, including:

and determining the antenna selection codebook according to the number of the data streams of the terminal equipment and the antenna port mapped by the data streams.

4. The method of claim 3, further comprising:

determining a phase matching codebook according to the phase of a transmission channel corresponding to the antenna port mapped by the data stream;

wherein the transmission codebook comprises the antenna selection codebook and the phase matching codebook, or the transmission codebook is determined based on the antenna selection codebook and the phase matching codebook.

5. The method of claim 4,

when the transmission codebook comprises the antenna selection codebook and the phase matching codebook, the indication information comprises first indication information for indicating the antenna selection codebook and second indication information for indicating the phase matching codebook.

6. The method of claim 4,

when the transmission codebook is determined based on the antenna selection codebook and the phase matching codebook, the method further comprises:

determining the transmission codebook based on the antenna selection codebook and the phase matching codebook.

7. The method according to any of claims 4-6, wherein the determining the antenna selection codebook according to the number of data streams of the terminal device and the antenna port to which the data stream is mapped comprises:

when the number of data streams of the terminal device is 1 and 1 data stream is mapped to 2 coherent antenna ports, determining a codebook from the following codebooks to select a codebook for the antenna:

wherein, the determining a phase matching codebook according to the phase of the transmission channel corresponding to the antenna port to which the data stream is mapped includes:

determining a codebook as the phase matching codebook from the following codebooks:

8. the method according to any of claims 4-6, wherein the determining the antenna selection codebook according to the number of data streams of the terminal device and the antenna port to which the data stream is mapped comprises:

when the number of data streams of the terminal device is 2 and 2 data streams are mapped to the same coherent antenna port, determining a codebook from the following codebooks to select a codebook for the antenna:

wherein, the determining a phase matching codebook according to the phase of the transmission channel corresponding to the antenna port to which the data stream is mapped includes:

determining a codebook from among the following codebooks to determine the phase matching codebook:

9. the method according to any of claims 4-6, wherein the determining the antenna selection codebook according to the number of data streams of the terminal device and the antenna port to which the data stream is mapped comprises:

when the number of data streams of the terminal device is 2 and 2 data streams are mapped to different coherent antenna ports, determining a codebook from the following codebooks to select a codebook for the antenna:

wherein, the determining a phase matching codebook according to the phase of the transmission channel corresponding to the antenna port to which the data stream is mapped includes:

determining the phase matching codebook to include a first phase matching codebook determined according to a phase of a transmission channel corresponding to a coherent antenna port to which a first data stream of the 2 data streams is mapped and a second phase matching codebook determined according to a phase of a transmission channel corresponding to an antenna port to which a second data stream of the 2 data streams is mapped, wherein one codebook is determined as the first phase matching codebook and the second phase matching codebook from the following codebooks:

10. the method according to any of claims 4-6, wherein the determining the antenna selection codebook according to the number of data streams of the terminal device and the antenna port to which the number of data streams is mapped comprises:

when the number of data streams of the terminal device is 3, and a first data stream and a second data stream of the 3 data streams are mapped to the same coherent antenna ports, and a third data stream of the 3 data streams is mapped to an antenna port that is not coherent to the antenna port to which the first data stream and the second data stream are mapped, determining a codebook from the following codebooks to select a codebook for the antenna:

wherein, the determining a phase matching codebook according to the phase of the transmission channel corresponding to the antenna port to which the data stream is mapped includes:

determining the phase matching codebook to include a first phase matching codebook and a second phase matching codebook, where the first phase matching codebook is determined according to the phases of transmission channels corresponding to coherent antenna ports to which the first data stream and the second data stream are mapped, and the second phase matching codebook is determined according to the phases of transmission channels corresponding to antenna ports to which a third data stream is mapped, where the first phase matching codebook is one of the following phase matching codebooks:

the second phase matching codebook is one of the following phase matching codebooks:

11. the method according to any of claims 4-6, wherein the determining the antenna selection codebook according to the number of data streams of the terminal device and the antenna port to which the number of data streams is mapped comprises:

when the number of data streams of the terminal device is 4, and a first data stream and a second data stream of the 4 data streams are mapped to the same coherent antenna ports, a third data stream and a fourth data stream of the 4 data streams are mapped to the same coherent antenna ports, and the antenna ports to which the third data stream and the fourth data stream are mapped are not coherent with the antenna ports to which the first data stream and the second data stream are mapped, determining a codebook from the following codebooks to select a codebook for the antenna:

wherein, the determining a phase matching codebook according to the phase of the transmission channel corresponding to the antenna port to which the data stream is mapped includes:

determining the phase matching codebook comprises a first phase matching codebook and a second phase matching codebook, wherein the first phase matching codebook is determined according to the phases of the transmission channels corresponding to the coherent antenna ports to which the first data stream and the second data stream are mapped, the second phase matching codebook is determined according to the phases of the transmission channels corresponding to the coherent antenna ports to which the third data stream and the fourth data stream are mapped, and the first phase matching codebook and the second phase matching codebook are one of the following phase matching codebooks:

12. the method of claim 1, wherein the determining the transmission codebook of the terminal device according to the antenna port information and the number of data streams of the terminal device comprises:

when the antenna ports of the terminal device are completely irrelevant and the number of data streams of the terminal device is 1, the transmission codebook is one of the following transmission codebooks:

when the antenna ports of the terminal device are completely irrelevant and the number of data streams of the terminal device is 2, the transmission codebook is one of the following transmission codebooks:

when the antenna ports of the terminal device are completely irrelevant and the number of data streams of the terminal device is 3, the transmission codebook is one of the following transmission codebooks:

when the antenna ports of the terminal device are completely irrelevant and the number of data streams of the terminal device is 4, the transmission codebook is:

13. a method for determining an uplink multi-antenna transmission codebook is applied to terminal equipment, and is characterized by comprising the following steps:

sending terminal capability information, wherein the terminal capability information comprises antenna port information, the antenna port information is used for indicating the coherence condition among the antenna ports of the terminal equipment, and the coherence condition among the antenna ports comprises one of complete incoherence of the antenna ports, partial coherence of the antenna ports and coherence of the antenna ports;

and receiving indication information of a transmission codebook, wherein the transmission codebook is determined by network equipment according to the antenna port information and the data stream number of the terminal equipment.

14. The method of claim 13,

the transmission codebook comprises an antenna selection codebook, or the transmission codebook is determined based on an antenna selection codebook,

and the antenna selection codebook is determined by the network equipment according to the antenna port information and the data stream number of the terminal equipment.

15. The method of claim 14, wherein the antenna ports of the terminal devices are partially coherent;

the antenna selection codebook is determined according to the number of data streams of the terminal device and the antenna port to which the data streams are mapped.

16. The method of claim 15,

the transmission codebook comprises an antenna selection codebook and a phase matching codebook, or the transmission codebook is generated based on the antenna selection codebook and the phase matching codebook,

and determining the phase matching codebook according to the phase of the transmission channel corresponding to the antenna port mapped by the data stream number.

17. The method of claim 16,

when the transmission codebook comprises an antenna selection codebook and a phase matching codebook, the indication information comprises first indication information for indicating the antenna selection codebook and second indication information for indicating the phase matching codebook.

18. A network device, comprising:

the terminal device comprises a receiving and sending module, a processing module and a processing module, wherein the receiving and sending module is used for receiving terminal capability information sent by terminal equipment, the terminal capability information comprises antenna port information, the antenna port information is used for indicating the coherence condition among antenna ports of the terminal equipment, and the coherence condition among the antenna ports comprises one of complete incoherence of the antenna ports, partial coherence of the antenna ports and coherence of the antenna ports;

the processing module is used for determining a transmission codebook of the terminal equipment according to the antenna port information and the data stream number of the terminal equipment;

the transceiver module is further configured to send indication information of a transmission codebook to the terminal device.

19. The network device of claim 18, wherein the transmission codebook comprises an antenna selection codebook, or wherein the transmission codebook is determined based on the antenna selection codebook;

the processing module is specifically configured to:

and determining the antenna selection codebook according to the antenna port information and the data stream number of the terminal equipment.

20. The network device of claim 19, wherein the antenna port information indicates that the antenna ports of the terminal devices are partially coherent;

wherein the processing module is specifically configured to:

and determining the antenna selection codebook according to the number of the data streams of the terminal equipment and the antenna port mapped by the data streams.

21. The network device of claim 20, wherein the processing module is further configured to:

determining a phase matching codebook according to the phase of a transmission channel corresponding to the antenna port mapped by the data stream;

wherein the transmission codebook comprises the antenna selection codebook and the phase matching codebook, or the transmission codebook is determined based on the antenna selection codebook and the phase matching codebook.

22. The network device of claim 21,

when the transmission codebook comprises the antenna selection codebook and the phase matching codebook, the indication information comprises first indication information for indicating the antenna selection codebook and second indication information for indicating the phase matching codebook.

23. The network device of claim 21,

when the transmission codebook is determined based on the antenna selection codebook and the phase matching codebook, the processing module is further configured to:

determining the transmission codebook based on the antenna selection codebook and the phase matching codebook.

24. The network device of any one of claims 21-23, wherein the processing module is specifically configured to:

when the number of data streams of the terminal device is 1 and 1 data stream is mapped to 2 coherent antenna ports, determining a codebook from the following codebooks to select a codebook for the antenna:

determining a codebook as the phase matching codebook from the following codebooks:

25. the network device of any one of claims 21-23, wherein the processing module is specifically configured to:

when the number of data streams of the terminal device is 2 and 2 data streams are mapped to the same coherent antenna port, determining a codebook from the following codebooks to select a codebook for the antenna:

determining a codebook from among the following codebooks to determine the phase matching codebook:

26. the network device of any one of claims 21-23, wherein the processing module is specifically configured to:

when the number of data streams of the terminal device is 2 and 2 data streams are mapped to different coherent antenna ports, determining a codebook from the following codebooks to select a codebook for the antenna:

determining the phase matching codebook to include a first phase matching codebook determined according to a phase of a transmission channel corresponding to a coherent antenna port to which a first data stream of the 2 data streams is mapped and a second phase matching codebook determined according to a phase of a transmission channel corresponding to an antenna port to which a second data stream of the 2 data streams is mapped, wherein one codebook is determined as the first phase matching codebook and the second phase matching codebook from the following codebooks:

27. the network device of any one of claims 21-23, wherein the processing module is specifically configured to:

when the number of data streams of the terminal device is 3, and a first data stream and a second data stream of the 3 data streams are mapped to the same coherent antenna ports, and a third data stream of the 3 data streams is mapped to an antenna port that is not coherent to the antenna port to which the first data stream and the second data stream are mapped, determining a codebook from the following codebooks to select a codebook for the antenna:

determining the phase matching codebook to include a first phase matching codebook and a second phase matching codebook, where the first phase matching codebook is determined according to the phases of transmission channels corresponding to coherent antenna ports to which the first data stream and the second data stream are mapped, and the second phase matching codebook is determined according to the phases of transmission channels corresponding to antenna ports to which a third data stream is mapped, where the first phase matching codebook is one of the following phase matching codebooks:

the second phase matching codebook is one of the following phase matching codebooks:

28. the network device of any one of claims 21-23, wherein the processing module is specifically configured to:

when the number of data streams of the terminal device is 4, and a first data stream and a second data stream of the 4 data streams are mapped to the same coherent antenna ports, a third data stream and a fourth data stream of the 4 data streams are mapped to the same coherent antenna ports, and the antenna ports to which the third data stream and the fourth data stream are mapped are not coherent with the antenna ports to which the first data stream and the second data stream are mapped, determining a codebook from the following codebooks to select a codebook for the antenna:

determining the phase matching codebook comprises a first phase matching codebook and a second phase matching codebook, wherein the first phase matching codebook is determined according to the phases of the transmission channels corresponding to the coherent antenna ports to which the first data stream and the second data stream are mapped, the second phase matching codebook is determined according to the phases of the transmission channels corresponding to the coherent antenna ports to which the third data stream and the fourth data stream are mapped, and the first phase matching codebook and the second phase matching codebook are one of the following phase matching codebooks:

29. the network device of claim 18, wherein the processing module is specifically configured to:

when the antenna ports of the terminal device are completely irrelevant and the number of data streams of the terminal device is 1, the transmission codebook is one of the following transmission codebooks:

when the antenna ports of the terminal device are completely irrelevant and the number of data streams of the terminal device is 2, the transmission codebook is one of the following transmission codebooks:

when the antenna ports of the terminal device are completely irrelevant and the number of data streams of the terminal device is 3, the transmission codebook is one of the following transmission codebooks:

when the antenna ports of the terminal device are completely irrelevant and the number of data streams of the terminal device is 4, the transmission codebook is:

30. a terminal device, comprising:

a sending module, configured to send terminal capability information, where the terminal capability information includes antenna port information, and the antenna port information is used to indicate a coherence condition between antenna ports of the terminal device, where the coherence condition between antenna ports includes one of complete incoherence of antenna ports, partial coherence of antenna ports, and coherence of antenna ports;

and the receiving module is used for receiving the indication information of the transmission codebook, and the transmission codebook is determined by the network equipment according to the antenna port information and the data stream number of the terminal equipment.

31. The terminal device of claim 30,

the transmission codebook comprises an antenna selection codebook, or the transmission codebook is determined based on an antenna selection codebook,

and the antenna selection codebook is determined by the network equipment according to the antenna port information and the data stream number of the terminal equipment.

32. The terminal device of claim 31, wherein the antenna ports of the terminal device are partially coherent;

the antenna selection codebook is determined according to the number of data streams of the terminal device and the antenna port to which the data streams are mapped.

33. The terminal device of claim 32,

the transmission codebook comprises an antenna selection codebook and a phase matching codebook, or the transmission codebook is generated based on the antenna selection codebook and the phase matching codebook,

and determining the phase matching codebook according to the phase of the transmission channel corresponding to the antenna port mapped by the data stream number.

34. The terminal device of claim 33,

when the transmission codebook comprises an antenna selection codebook and a phase matching codebook, the indication information comprises first indication information for indicating the antenna selection codebook and second indication information for indicating the phase matching codebook.

35. A network device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method according to any one of claims 1 to 12.

36. A terminal device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method according to any one of claims 13 to 17.

37. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 12.

38. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 13 to 17.

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