阅读说明：本技术 用于数据传输的方法、装置和系统 (Method, device and system for data transmission ) 是由 吴晔 金黄平 韩玮 毕晓艳 于 2018-06-20 设计创作，主要内容包括：本申请提供了一种用于数据传输的方法、装置和系统,能够提高数据传输的可靠性。该方法应用于包含有网络设备和终端设备的通信系统中,网络设备和终端设备预先保存有多个预编码矩阵,该方法包括：终端设备接收用于信道测量的多个参考信号；该终端设备根据该至少一个参考信号和CSI反馈基于的传输方案,发送多个第一指示信息,该多个第一指示信息用于指示x个目标预编码矩阵,该多个第一指示信息中的至少一个第一指示信息用于指示一个目标预编码矩阵,该x个目标预编码矩阵是基于多个预编码矩阵确定,其中,x为需要反馈的目标预编码矩阵的数量,x为大于1的整数。(The application provides a method, a device and a system for data transmission, which can improve the reliability of data transmission. The method is applied to a communication system comprising network equipment and terminal equipment, wherein the network equipment and the terminal equipment pre-store a plurality of precoding matrixes, and the method comprises the following steps: the terminal equipment receives a plurality of reference signals for channel measurement; the terminal device sends a plurality of pieces of first indication information according to a transmission scheme based on the at least one reference signal and CSI feedback, wherein the plurality of pieces of first indication information are used for indicating x target precoding matrices, at least one piece of first indication information in the plurality of pieces of first indication information is used for indicating one target precoding matrix, and the x target precoding matrices are determined based on a plurality of precoding matrices, wherein x is the number of the target precoding matrices needing to be fed back, and x is an integer greater than 1.)

A method for data transmission, wherein the method is applied to a communication system including a network device and a terminal device, and the network device and the terminal device have a plurality of precoding matrices stored in advance, and the method comprises:

the terminal equipment receives at least one reference signal used for channel measurement;

the terminal device sends a plurality of pieces of first indication information according to a transmission scheme based on the at least one reference signal and Channel State Information (CSI) feedback, wherein the plurality of pieces of first indication information are used for indicating x target precoding matrixes, at least one piece of first indication information in the plurality of pieces of first indication information is used for indicating one target precoding matrix, and the x target precoding matrixes are determined based on the plurality of precoding matrixes;

wherein x is the number of target precoding matrices needing to be fed back, and x is an integer greater than 1.

The method of claim 1, wherein each of the at least one reference signal is a precoded polled reference signal, and each of the plurality of first indication information is used for indicating a precoding matrix corresponding to one of the at least one reference signal at a precoded polling granularity, wherein the number of precoded polls is greater than or equal to 1, the number of precoding matrices used for precoded polls is y, and y is an integer greater than 1.

The method according to claim 2, wherein each of y precoding matrices for precoding polling is used to determine one of the x target precoding matrices, where y is x, and the y precoding matrices are in one-to-one correspondence with the x target precoding matrices.

The method of claim 2, wherein in the case where y > x, the method further comprises:

the terminal device sends second indication information, wherein the second indication information indicates x precoding matrixes in y precoding matrixes for precoding polling, each precoding matrix in the x precoding matrixes for precoding polling is used for determining one target precoding matrix in the x target precoding matrixes, and the x precoding matrixes for precoding polling are in one-to-one correspondence with the x target precoding matrixes.

The method of claim 1, wherein each of the at least one reference signal is a non-precoded reference signal, wherein each of the first indication information comprises three codebook indexes, and wherein the three codebook indexes in each of the first indication information are used for jointly indicating one precoding matrix, and wherein the first indication information corresponds to the x target precoding matrices one to one.

A method for data transmission, wherein the method is applied to a communication system including a network device and a terminal device, the network device and the terminal device pre-store a plurality of precoding matrix sets, each precoding matrix set in the plurality of precoding matrix sets includes at least one precoding matrix, and the method includes:

the terminal equipment receives a plurality of reference signals for channel measurement;

the terminal equipment sends third indication information and fourth indication information according to a transmission scheme based on the multiple reference signals and the CSI feedback, wherein the third indication information is used for indicating a first precoding matrix set in the multiple precoding matrix sets, and the fourth indication information is used for indicating x target precoding matrices in the first precoding matrix set;

wherein x is the number of target precoding matrices needing to be fed back, and x is an integer greater than 1.

The method of claim 6, wherein each of the plurality of reference signals is a non-precoded reference signal, wherein the third indication information comprises two codebook indices, and wherein the two codebook indices of the third indication information are used for jointly indicating the first set of precoding matrices.

The method according to any one of claims 1 to 7, further comprising:

and the terminal equipment sends indication information of precoding polling granularity.

The method according to any one of claims 1 to 8, further comprising:

and the terminal equipment receives fifth indication information, wherein the fifth indication information indicates the number x of the target precoding matrixes needing to be fed back.

The method according to any of claims 1 to 8, wherein the number x of target precoding matrices to be fed back is configured in advance in the network device and the terminal device.

A method for data transmission, wherein the method is applied to a communication system including a network device and a terminal device, and the network device and the terminal device have a plurality of precoding matrices stored in advance, and the method comprises:

the network equipment transmits at least one reference signal for channel measurement;

the network device receives a plurality of first indication information fed back by the terminal device according to a transmission scheme based on the at least one reference signal and Channel State Information (CSI) feedback, wherein the plurality of first indication information are used for indicating x target precoding matrixes, at least one first indication information in the plurality of first indication information is used for indicating one target precoding matrix, and the x target precoding matrixes are determined based on the plurality of precoding matrixes;

the network equipment determines the x target precoding matrixes according to the plurality of pieces of first indication information;

wherein x represents the number of target precoding matrices needing to be fed back, and x is an integer greater than 1.

The method of claim 11, wherein each of the at least one reference signal is a precoded polled reference signal, and each of the first indication information is used for indicating a precoding matrix corresponding to one of the at least one reference signal at a precoding polling granularity, wherein the number of precoded polls is greater than or equal to 1, the number of precoding matrices used for precoded polls is y, and y is an integer greater than 1.

The method of claim 12, wherein in case y ═ x, the network device determines the x target precoding matrices according to the plurality of first indication information, comprising:

and the network equipment determines each target precoding matrix in the x target precoding matrices according to the plurality of first indication information and each precoding matrix in the y precoding matrices for precoding polling, wherein the y precoding matrices for precoding polling correspond to the x target precoding matrices one by one.

The method according to claim 12, wherein in case y > x, the network device determines the x target precoding matrices according to the plurality of first indication information, comprising:

the network equipment receives second indication information and determines x precoding matrixes from the y precoding matrixes for precoding polling according to the second indication information;

the network equipment determines each target precoding matrix in the x target precoding matrices according to the plurality of first indication information and each precoding matrix in the x precoding matrices for precoding polling, wherein the x precoding matrices for precoding polling correspond to the x target precoding matrices one to one.

The method of claim 11, wherein each of the at least one reference signal is a non-precoded reference signal, wherein each of the first indication information comprises three codebook indexes, and wherein the three codebook indexes in each of the first indication information are used for jointly indicating one precoding matrix, and wherein the first indication information corresponds to the x target precoding matrices one to one.

A method for data transmission, wherein the method is applied to a communication system including a network device and a terminal device, the network device and the terminal device pre-store a plurality of precoding matrix sets, each precoding matrix set in the plurality of precoding matrix sets includes at least one precoding matrix, and the method includes:

the network equipment transmits a plurality of reference signals for channel measurement;

the network equipment receives third indication information and fourth indication information fed back by the terminal equipment according to a transmission scheme based on the multiple reference signals and Channel State Information (CSI) feedback, wherein the third indication information is used for indicating a first precoding matrix set in the multiple precoding matrix sets, and the fourth indication information is used for indicating x target precoding matrices in the first precoding matrix set;

the network equipment determines the x target precoding matrixes according to the third indication information and the fourth indication information;

wherein x is the number of target precoding matrices needing to be fed back, and x is an integer greater than 1.

The method of claim 14, wherein each of the plurality of reference signals is a non-precoded reference signal, wherein the third indication information comprises two codebook indices, and wherein the two codebook indices in the third indication information are used for jointly indicating the first set of precoding matrices.

The method according to any one of claims 11 to 17, further comprising:

the network device receives indication information of precoding polling granularity.

The method according to any one of claims 11 to 18, further comprising:

and the network equipment sends fifth indication information, wherein the fifth indication information indicates the number x of the target precoding matrixes needing to be fed back.

The method according to any of claims 11 to 18, wherein the number x of target precoding matrices to be fed back is pre-configured in the network device and the terminal device.

An apparatus for data transmission, characterized in that it is configured to perform the method according to any one of claims 1 to 20.

An apparatus for data transmission, comprising:

a memory for storing a computer program;

a processor for executing a computer program stored in the memory to cause the apparatus to perform the method of any of claims 1 to 20.

A method for indicating channel measurements, comprising:

the terminal equipment receives tenth indication information, wherein the tenth indication information indicates the frequency band granularity on which channel measurement is based, and a frequency band corresponding to one frequency band granularity corresponds to one precoding matrix;

and the terminal equipment determines the frequency band granularity according to the tenth indication information.

The method of claim 23, further comprising:

and the terminal equipment performs channel measurement on the measurement bandwidth according to the frequency band granularity, wherein the measurement bandwidth is the bandwidth on which the feedback Channel State Information (CSI) is based.

The method of claim 24, wherein a bandwidth on which the feedback CSI is based is a full bandwidth or a partial bandwidth of a transmission reference signal.

The method according to one of claims 23 to 25, wherein the band granularity is a bandwidth size of a precoding resource block group, PRG.

The method according to any of claims 23 to 26, wherein the precoding matrix is randomly selected by a terminal device from a predefined codebook.

The method according to any one of claims 24 to 26, wherein the channel measurement of the measurement bandwidth by the terminal device according to the band granularity comprises:

and the terminal equipment takes the frequency band granularity as the granularity of pre-coding polling and carries out channel measurement on the measurement bandwidth based on a transmission scheme of the pre-coding polling.

The method according to any one of claims 23 to 28, wherein the tenth indication information is carried in any one of the following signaling: a radio resource control RRC message, a media access control MAC-control element CE or downlink control information DCI.

The method according to any of claims 23 to 29, wherein any two adjacent frequency bands with the same granularity of frequency bands correspond to different precoding matrices.

A method for indicating channel measurements, comprising:

the network equipment determines the frequency band granularity based on which the channel measurement is based, and a frequency band corresponding to one frequency band granularity corresponds to one precoding matrix;

the network device sends tenth indication information, where the tenth indication information indicates the band granularity.

The method of claim 31, wherein the band granularity is a bandwidth size of a precoding resource block group (PRG).

The method according to claim 31 or 32, wherein the indication information is carried in any one of the following signaling: a radio resource control RRC message, a media access control MAC-control element CE or downlink control information DCI.

The method according to any of claims 31 to 33, wherein any two adjacent frequency bands with the same granularity of frequency bands correspond to different precoding matrices.

A terminal device, comprising: a transceiver module, configured to receive tenth indication information, where the tenth indication information indicates a frequency band granularity on which channel measurement is based, and a frequency band corresponding to one frequency band granularity corresponds to one precoding matrix;

and the processing module is used for determining the frequency band granularity according to the tenth indication information.

The terminal device of claim 35, wherein the processing module is further configured to perform channel measurement on a measurement bandwidth according to the band granularity, and the measurement bandwidth is a bandwidth on which Channel State Information (CSI) is fed back.

The terminal device of claim 36, wherein the bandwidth on which the CSI is fed back is a full bandwidth or a partial bandwidth of a transmission reference signal.

The terminal device of any of claims 35 to 37, wherein the band granularity is a bandwidth size of a precoding resource block group, PRG.

The terminal device of any of claims 35 to 38, wherein the precoding matrix is randomly selected from a predefined codebook.

The terminal device according to any one of claims 36 to 38, wherein the processing module is specifically configured to: and taking the frequency band granularity as the granularity of the pre-coding polling, and carrying out channel measurement based on a transmission scheme of the pre-coding polling.

The terminal device according to any one of claims 35 to 40, wherein the tenth indication information is carried in any one of the following signaling: a radio resource control RRC message, a media access control MAC-control element CE or downlink control information DCI.

The terminal device according to any of claims 35 to 41, wherein the precoding matrices for any two adjacent frequency bands with the same granularity of frequency bands are different.

A network device, comprising:

a processing module, configured to determine a frequency band granularity on which channel measurement is based, where a frequency band corresponding to one frequency band granularity corresponds to one precoding matrix;

a transceiver module, configured to send tenth indication information, where the tenth indication information indicates the band granularity.

The network device of claim 43, wherein the band granularity is a bandwidth size of a precoding resource block group (PRG).

The network device according to claim 43 or 44, wherein the tenth indication information is carried in any one of the following signaling: a radio resource control RRC message, a media access control MAC-control element CE or downlink control information DCI.

The network device of any of claims 43 to 45, wherein any two adjacent frequency bands with the same granularity of frequency bands correspond to different precoding matrices.

A terminal device, comprising:

a processor, configured to receive tenth indication information, where the tenth indication information indicates a granularity of a frequency band on which channel measurement is based, and a frequency band corresponding to one granularity of the frequency band corresponds to one precoding matrix;

a transceiver, configured to determine the band granularity according to the tenth indication information.

The terminal device of claim 47, wherein the processor is further configured to perform channel measurement on a measurement bandwidth according to the band granularity, the measurement bandwidth being a bandwidth on which feedback Channel State Information (CSI) is based.

The terminal device of claim 48, wherein the bandwidth on which the CSI is fed back is a full bandwidth or a partial bandwidth of a transmission reference signal.

The terminal device of any one of claims 47 to 49, wherein the band granularity is a bandwidth size of a precoding resource block group (PRG).

The terminal device of any one of claims 47 to 50, wherein the precoding matrix is randomly selected from a predefined codebook.

The terminal device of any one of claims 48 to 50, wherein the processor is specifically configured to: and taking the frequency band granularity as the granularity of pre-coding polling, and carrying out channel measurement on the measurement bandwidth based on a transmission scheme of the pre-coding polling.

The terminal device according to any one of claims 47 to 52, wherein the tenth indication information is carried in any one of the following signaling: a radio resource control RRC message, a media access control MAC-control element CE or downlink control information DCI.

The terminal device according to one of claims 47 to 53, wherein the precoding matrices for any two adjacent frequency bands with the same granularity of frequency bands are different.

A network device, comprising:

a processor for determining a granularity of frequency bands on which channel measurement is based, a frequency band corresponding to a granularity of frequency bands corresponding to a precoding matrix;

a transceiver for transmitting tenth indication information, the tenth indication information indicating the band granularity.

The network device of claim 55, wherein the band granularity is a bandwidth size of a precoding resource block group (PRG).

The network device of claim 55 or 56, wherein the tenth indication information is carried in any one of the following signaling: a radio resource control RRC message, a media access control MAC-control element CE or downlink control information DCI.

The network device of any of claims 55 to 57, wherein any two adjacent frequency bands with the same granularity of frequency bands correspond to different precoding matrices.

A processor configured to perform the method of any one of claims 23 to 34.

A processing apparatus, comprising:

a memory for storing a computer program;

a processor for calling and running the computer program from the memory to perform the method of any of claims 23 to 34.

A chip system, comprising:

a memory for storing a computer program;

a processor for calling and running the computer program from the memory so that a device on which the system-on-chip is installed performs the method of any one of claims 23 to 34.

A computer readable storage medium comprising a computer program which, when run on a computer, causes the computer to perform the method of any of claims 23 to 34.

A computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 23 to 34.

A communication system, comprising:

the terminal device of any one of claims 35 to 42 and the network device of any one of claims 43 to 46; or

The terminal device of any one of claims 47 to 54 and the network device of any one of claims 55 to 58.