WO2017167091A1

WO2017167091A1 - Channel state information feedback method and device, and computer storage medium

Info

Publication number: WO2017167091A1
Application number: PCT/CN2017/077660
Authority: WO
Inventors: 王瑜新; 鲁照华; 陈艺戬; 李儒岳; 肖华华; 李永; 吴昊; 蔡剑兴
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-04-01
Filing date: 2017-03-22
Publication date: 2017-10-05
Also published as: CN107294585B; CN107294585A

Abstract

Disclosed are a channel state information feedback method and device, and a computer storage medium, wherein the method comprises: receiving configuration signalling of a base station; and feeding back, on a pre-defined or configured time-frequency resource, downlink channel state information to the base station according to the configuration signalling.

Description

信道状态信息的反馈方法及装置、计算机存储介质Method and device for feeding channel state information, computer storage medium

技术领域Technical field

本发明涉及智能交通技术领域，具体而言，涉及一种信道状态信息的反馈方法及装置、计算机存储介质。The present invention relates to the field of intelligent transportation technologies, and in particular, to a method and device for feeding back channel state information, and a computer storage medium.

背景技术Background technique

在长期演进(LTE，Advanced Long Term)***中，采用的是公共参考信号(CRS，Common Reference Signal)进行导频测量和数据解调，即所有用户都使用CRS进行信道估计。采用基于CRS的预编码处理方式时需要发射端额外通知接收端数据发送时所使用的具体预编码矩阵(也可以称为预编码权值)信息，而且导频的开销较大。另外在多用户多输入多输出(MU-MIMO，Multi-user Multi-input Multi-output)***中，由于多个终端使用相同的CRS，无法实现导频的正交，因此无法估计干扰。In the Long Term Evolution (LTE) system, a common reference signal (CRS, Common Reference Signal) is used for pilot measurement and data demodulation, that is, all users use CRS for channel estimation. When the CRS-based precoding processing mode is adopted, the transmitting end needs to additionally notify the specific precoding matrix (also referred to as precoding weight) information used by the receiving end for data transmission, and the overhead of the pilot is large. In addition, in a multi-user multi-input multi-output (MU-MIMO) system, since multiple terminals use the same CRS, pilot orthogonality cannot be achieved, and thus interference cannot be estimated.

在增强的长期演进(LTE-A，Advanced Long Term Evolution)***中，为了降低导频开销和提高信道估计准确度，将导频测量和数据解调功能分开，分别定义了两类参考信号：解调参考信号(DMRS，Demodulation Reference Signal)和信道状态信息参考信号(CSI-RS，Channel State Information Referenced Signal)。其中CSI-RS主要用于信道测量以获得信道质量指示(CQI，Channel Quality Indication)并反馈，使基站侧可以利用该信息完成用户调度以及实现调制编码方式(MCS，Modulation and Coding Scheme)的自适应分配，CSI-RS的传输中并不携带预编码信息；而DMRS主要用于物理下行共享信道(PDSCH，Physical Downlink Shared Channel)以及增强的物理下行控制信道(ePDCCH，enhanced Physical Downlink Control Channel)的信道估计以完成数据/控制信道的解调，DMRS的传输携带了相应PDSCH/ePDCCH的预编码信息。LTE和LTE-A***根据上下行双工方式的不同可分为频分双工(FDD，Frequency Division Duplex)和时分双工(TDD，Time Division Duplex)***，FDD和TDD***的CSI-RS和DMRS的图样会有所差异。In the Enhanced Long Term Evolution (LTE-A) system, in order to reduce the pilot overhead and improve the channel estimation accuracy, the pilot measurement and the data demodulation function are separated, and two types of reference signals are respectively defined: The DMRS (Demodulation Reference Signal) and the Channel State Information Reference Signal (CSI-RS). The CSI-RS is mainly used for channel measurement to obtain Channel Quality Indication (CQI) and feedback, so that the base station side can use the information to complete user scheduling and implement modulation and coding (MCS) adaptation. The allocation of the CSI-RS does not carry the precoding information. The DMRS is mainly used for the physical downlink shared channel (PDSCH) and the enhanced physical downlink control channel (ePDCCH). Estimate to complete data/control channel demodulation, DMRS transmission The precoding information of the corresponding PDSCH/ePDCCH is carried. LTE and LTE-A systems can be classified into FDD (Frequency Division Duplex) and Time Division Duplex (TDD) systems according to the uplink and downlink duplex modes. CSI-RS and FDD and TDD systems are used. The pattern of the DMRS will vary.

图1是根据相关技术中FDD***的帧结构示意图一，如图1所示，FDD***的帧结构包括：一个10毫秒(ms)的无线帧由二十个长度为0.5ms，编号0～19的时隙(slot)组成，时隙2i和2i+1组成长度为1ms的子帧(subframe)i。TDD***的帧结构，图2是根据相关技术中FDD***的帧结构示意图二，如图2所示，一个10ms的无线帧由两个长为5ms的半帧(half frame)组成，一个半帧包括5个长度为1ms的子帧，子帧i定义为2个长为0.5ms的时隙2i和2i+1。1 is a schematic diagram of a frame structure of an FDD system according to the related art. As shown in FIG. 1, the frame structure of the FDD system includes: a radio frame of 10 milliseconds (ms) having twenty lengths of 0.5 ms, numbered from 0 to 19 The slots are composed of slots 2i and 2i+1 which constitute a subframe i having a length of 1 ms. The frame structure of the TDD system, FIG. 2 is a schematic diagram of the frame structure of the FDD system according to the related art. As shown in FIG. 2, a 10 ms radio frame is composed of two half frames of 5 ms length, one field. It includes five subframes of length 1 ms, and subframe i is defined as two slots 2i and 2i+1 of length 0.5 ms.

在上述两种帧结构里，对于标准循环前缀(Normal CP，Normal Cyclic Prefix)，一个时隙包含7个长度为66.7微秒(us)的符号，其中第一个符号的CP长度为5.21us，其余6个符号的CP长度为4.69us；对于扩展循环前缀(Extended CP，Extended Cyclic Prefix)，一个时隙包含6个符号，所有符号的CP长度均为16.67us。时间单位T_s定义为T_s＝1/(15000×2048)秒，对一个无线帧中的每个子帧，“D”表示专用于下行传输的子帧，“U”表示专用于上行传输的子帧，“S”表示用于下行导频时隙(DwPTS，Downlink Pilot Time Slot)，保护间隔(GP，Guard Period)和上行导频时隙(UpPTS，Uplink Pilot Time Slot)这三个域的特殊子帧，它们的长度服从DwPTS、GP和UpPTS三者总长度为30720·T_s＝1ms。每个子帧i由2个时隙2i和2i+1表示，每个时隙长为T_slot＝15360·T_s＝0.5ms。In the above two frame structures, for a normal cyclic prefix (Normal CP, Normal Cyclic Prefix), one slot contains seven symbols having a length of 66.7 microseconds (us), wherein the CP length of the first symbol is 5.21 us. The CP length of the remaining 6 symbols is 4.69us. For the extended cyclic prefix (Extended Cyclic Prefix), one slot contains 6 symbols, and the CP length of all symbols is 16.67us. The time unit T _{s is} defined as T _s =1/(15000×2048) seconds. For each subframe in a radio frame, “D” denotes a subframe dedicated to downlink transmission, and “U” denotes a subframe dedicated to uplink transmission. The frame, "S" indicates the special three fields of the downlink pilot time slot (DwPTS, Downlink Pilot Time Slot), the guard interval (GP, Guard Period) and the uplink pilot time slot (UpPTS, Uplink Pilot Time Slot). Subframes, whose lengths are obeyed by DwPTS, GP, and UpPTS, have a total length of 30720·T _s = 1 ms. Each subframe i is represented by 2 slots 2i and 2i+1, each slot having a length of T _slot = 15360 · T _s = 0.5 ms.

LTE和LTE-A中，上行需要传输的控制信令有正确/错误应答消息(ACK/NACK，Acknowledgement/Negative Acknowledgement)，以及反映下行物理信道状态信息(CSI，Channel State Information)的三种形式：CQI、预编码矩阵指示(PMI，Pre-coding Matrix Indicator)、秩指示(RI，Rank Indicator)。In LTE and LTE-A, the control signaling that needs to be transmitted in the uplink has the correct/error acknowledgement message (ACK/NACK, Acknowledgement/Negative Acknowledgement), and three forms reflecting the downlink physical channel state information (CSI, Channel State Information): CQI, Pre-coding matrix indicator (PMI), rank indicator (RI, Rank Indicator).

CQI在链路自适应过程中起着关键的作用，这是一个由UE发送到eNodeB的消息，用于描述当前的UE的下行链路信道质量。UE可以测量基站发送的参考符号，然后通过计算得到CQI。The CQI plays a key role in the link adaptation process, which is a message sent by the UE to the eNodeB to describe the downlink channel quality of the current UE. The UE can measure the reference symbols sent by the base station and then calculate the CQI.

大规模多输入多输出(Massive MIMO，Massive Multiple Input Multiple Output)技术是下一代通信技术中的一个关键的增强技术，Massive MIMO***主要特征为：基站侧配置有大规模天线阵列，可以使用多于8根天线进行发射，例如可以使用16根天线，或32根天线，或64根天线，甚至更多根天线进行发射。多于8根天线的发射传输就是Massive MIMO技术。使用这种大规模多天线技术，不仅有利用降低用户信道之间的干扰，另一方面，大阵列也可以带来非常可观的阵列增益和分集增益。如果将多根天线排在竖直的平面上形成一个面阵进行发射传输，这样可以有效地利用基站天线的空间，在一个小的空间内放置多根天线，从而既获得水平方向上的Massive MIMO的增益，又能获得垂直方向上的Massive MIMO增益，这就是三维大规模多输入多输出(3D Massive MIMO，3Dimensional Massive MIMO)技术或者成为全维(FD MIMO，Full Dimensional MIMO)技术。Massive Multiple Input Multiple Output (Massive Multiple Input Multiple Output) technology is a key enhancement technology in the next generation communication technology. The main feature of the Massive MIMO system is that the base station side is equipped with a large-scale antenna array, which can be used more than Eight antennas transmit, for example, 16 antennas, or 32 antennas, or 64 antennas, or even more antennas. The transmission transmission of more than 8 antennas is Massive MIMO technology. The use of such large-scale multi-antenna technology not only reduces the interference between user channels, but on the other hand, large arrays can also bring about considerable array gain and diversity gain. If multiple antennas are arranged on a vertical plane to form an area array for transmission transmission, the space of the base station antenna can be effectively utilized, and multiple antennas can be placed in a small space, thereby obtaining both Massive MIMO in the horizontal direction. The gain, in turn, can obtain the Massive MIMO gain in the vertical direction. This is the 3D Massive MIMO (3D Massive MIMO) technology or the Full Dimensional MIMO (FD) technology.

为了减少下行导频的资源开销和减少UE的反馈量，TDD***常常会利用信道互易性通过测试测量参考信号(SRS，Sounding Reference Signal)来获得下行CSI，但对于FDD***，由于上行链路与下行链路的频带差异，基站侧利用信道互易性通过测量SRS来获得下行CSI的做法将变得非常不可靠，不可避免地会浪费大量的下行导频资源开销以及增加UE的反馈量。除此以外，UE反馈的方法由于存在PMI量化误差，会对下行的传输性能产生重大影响。基于此，在LTE-A或5G通信***中，如何反馈信道状态信息，目前是一个待解决的问题。 In order to reduce the resource overhead of the downlink pilot and reduce the feedback amount of the UE, the TDD system often uses the channel reciprocity to obtain the downlink CSI by using the Sounding Reference Signal (SRS), but for the FDD system, due to the uplink. Different from the frequency band of the downlink, the base station side uses the channel reciprocity to obtain the downlink CSI by measuring the SRS, which becomes very unreliable, inevitably wastes a large amount of downlink pilot resource overhead and increases the feedback amount of the UE. In addition, the UE feedback method has a significant impact on the downlink transmission performance due to the PMI quantization error. Based on this, in the LTE-A or 5G communication system, how to feed back the channel state information is currently a problem to be solved.

针对相关技术中在LTE-A或5G通信***中信道状态信息的反馈存在导致大量下行导频资源开销的浪费以及反馈量大的问题，还未提出有效的解决方案。For the feedback of the channel state information in the LTE-A or 5G communication system in the related art, there is a problem that a large amount of downlink pilot resource overhead is wasted and the feedback amount is large, and an effective solution has not been proposed.

发明内容Summary of the invention

本发明实施例提供了一种信道状态信息的反馈方法及装置、计算机存储介质，以至少解决相关技术中在LTE-A或5G通信***中信道状态信息的反馈存在导致大量下行导频资源开销的浪费以及反馈量大的问题。The embodiment of the present invention provides a method and a device for feeding back channel state information, and a computer storage medium, to at least solve the problem that the feedback of channel state information in the LTE-A or 5G communication system in the related art causes a large amount of downlink pilot resource overhead. Waste and the problem of large feedback.

根据本发明实施例的一个方面，提供了一种信道状态信息的反馈方法，包括：接收基站的配置信令；根据所述配置信令在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息。According to an aspect of the present invention, a method for feeding back channel state information includes: receiving configuration signaling of a base station; and feeding back to the base station according to the configuration signaling on a pre-defined or configured time-frequency resource. Downstream channel status information.

在一实施方式中，根据所述配置信令在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息包括：根据所述配置信令从多种反馈类型或反馈方式中选择一种反馈类型或反馈方式在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息，其中，所述反馈类型或反馈方式包括以下至少之一：量化反馈、非量化反馈、种类type一的反馈、种类type二的反馈、种类class A的反馈、种类class B的反馈。In an embodiment, the feeding back downlink channel state information to the base station on the predefined or configured time-frequency resource according to the configuration signaling includes: selecting one of multiple feedback types or feedback manners according to the configuration signaling The feedback type or the feedback mode feeds back downlink channel state information to the base station on a pre-defined or configured time-frequency resource, where the feedback type or feedback manner includes at least one of the following: quantization feedback, non-quantization feedback, type type Feedback of one, feedback of type type two, feedback of type class A, feedback of type class B.

在一实施方式中，所述量化反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型；所述非量化反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；所述种类type一的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型；所述种类type二的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；或者，所述种类type二的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型，所述种类type一的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；所述种类class A的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型，所述种类class B的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；或者，所述种类class B的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型，所述种类class A的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型。In an embodiment, the quantitative feedback is a feedback mode or a feedback type in which the feedback content includes a PMI and/or an RI; and the non-quantized feedback is a feedback mode or a feedback type in which the feedback content does not include the PMI and/or the RI; The feedback of the type type 1 is a feedback mode or a feedback type in which the feedback content includes a PMI and/or an RI; and the feedback of the type 2 is a feedback mode or a feedback type in which the feedback content does not include the PMI and/or the RI; or The feedback of the type 2 is a feedback mode or a feedback type in which the feedback content includes a PMI and/or an RI, and the feedback of the type type 1 is a feedback mode or a feedback type in which the feedback content does not include the PMI and/or the RI; The feedback of the category class A is a feedback mode or a feedback type in which the feedback content includes a PMI and/or an RI, and the feedback of the category class B is a feedback mode or a feedback type in which the feedback content does not include the PMI and/or the RI; Alternatively, the feedback of the category class B is a feedback mode or a feedback type in which the feedback content includes a PMI and/or an RI, and the feedback of the category class A is a feedback mode or a feedback type in which the feedback content does not include the PMI and/or the RI. .

在一实施方式中，所述预先定义或配置的时频资源包括以下至少之一：上行DMRS对应的时频资源、与上行DMRS所占时域符号相邻的时域符号对应的时频资源、SRS对应的时频资源、物理上行控制信道对应的全部或部分时频资源、物理上行共享信道对应的全部或部分时频资源、TDD的特殊子帧中上行导频时隙对应的时频资源。In an embodiment, the pre-defined or configured time-frequency resource includes at least one of: a time-frequency resource corresponding to the uplink DMRS, a time-frequency resource corresponding to a time-domain symbol adjacent to the time-domain symbol occupied by the uplink DMRS, The time-frequency resource corresponding to the SRS, all or part of the time-frequency resource corresponding to the physical uplink control channel, all or part of the time-frequency resource corresponding to the physical uplink shared channel, and the time-frequency resource corresponding to the uplink pilot time slot in the special subframe of the TDD.

在一实施方式中，根据所述配置信令在预先定义或配置的时频资源上反馈所述下行信道状态信息包括以下之一：将所述下行信道状态信息叠加到所述上行DMRS或所述SRS上反馈；将所述下行信道状态信息乘到所述上行DMRS或所述测量参考信号SRS上反馈；将所述下行信道状态信息进行频域扩展后映射到物理上行控制信道或物理上行共享信道对应的全部或部分时频资源上反馈。In an embodiment, feeding back the downlink channel state information on the predefined or configured time-frequency resource according to the configuration signaling includes: adding the downlink channel state information to the uplink DMRS or the Feedback on the SRS; multiplying the downlink channel state information to the uplink DMRS or the measurement reference signal SRS; and mapping the downlink channel state information to a physical uplink control channel or a physical uplink shared channel Feedback on all or part of the time-frequency resources.

在一实施方式中，在所述预先定义或配置的时频资源为TDD的特殊子帧中上行导频时隙对应的时频资源的情况下，根据所述配置信令在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息包括：在一个符号的上行导频时隙对应的时频资源上发送SRS，使用其余的一个或多个符号的上行导频时隙承载所述下行信道状态信息。In an embodiment, in the case that the time-frequency resource corresponding to the uplink pilot time slot is in the special subframe of the TDD, the pre-defined or configured time-frequency resource is pre-defined or configured according to the configuration signaling. The reporting of the downlink channel state information to the base station on the time-frequency resource includes: transmitting the SRS on the time-frequency resource corresponding to the uplink pilot time slot of one symbol, and using the uplink pilot time slot of the remaining one or more symbols to carry the Downstream channel status information.

在一实施方式中，在所述预先定义或配置的时频资源为所述上行DMRS对应的时频资源的情况下，所述方法还包括：当所述上行DMRS的频率梳数量为2、4或8时，使用其中的1个或多个频率梳承载所述下行信道状态信息。In an embodiment, when the time-frequency resource that is predefined or configured is a time-frequency resource corresponding to the uplink DMRS, the method further includes: when the number of frequency combs of the uplink DMRS is 2, 4 Or 8: The downlink channel state information is carried by using one or more of the frequency combs.

在一实施方式中，所述使用其中的1个或多个频率梳承载下行信道状态信息包括：将所述下行信道状态信息与所述上行DMRS相乘后的信号，映射到所述1个或多个频率梳对应的时频资源上。In an embodiment, the using the one or more frequency combs to carry the downlink channel state information includes: multiplying the downlink channel state information by the uplink DMRS, Mapping to time-frequency resources corresponding to the one or more frequency combs.

在一实施方式中，所述配置信令还用于指示所述终端是否需要反馈所述下行信道状态信息，其中，通过以下方式之一指示：使用下行控制信令中的1比特数据指示位，以及5比特的调制、编码方式和冗余版本指示位联合指示所述终端是否需要反馈所述下行信道状态信息；使用下行控制信令中的CSI请求位以及SRS请求位联合指示所述终端是否需要反馈所述下行信道状态信息；通过高层信令为所述终端配置反馈周期和子帧偏置的方式来指示所述终端是否需要反馈所述下行信道状态信息。In an embodiment, the configuration signaling is further used to indicate whether the terminal needs to feed back the downlink channel state information, where, by using one of the following manners: using a 1-bit data indication bit in the downlink control signaling, And the 5-bit modulation, coding mode, and the redundancy version indication bit jointly indicate whether the terminal needs to feed back the downlink channel state information; use the CSI request bit in the downlink control signaling and the SRS request bit to jointly indicate whether the terminal needs The downlink channel state information is fed back; the feedback period and the subframe offset are configured for the terminal by using the high layer signaling to indicate whether the terminal needs to feed back the downlink channel state information.

在一实施方式中，所述下行信道状态信息包括以下至少之一：所述终端在CSI-RS对应的时频资源上接收到的信号，所述基站到所述终端的下行信道信息，所述基站到所述终端的下行信道的协方差矩阵信息，所述基站到所述终端的下行信道的协方差矩阵的最大的1个右奇异向量或最大的2个右奇异向量信息，所述基站到所述终端的下行信道的多径方向信息和每径的幅度信息。In an embodiment, the downlink channel state information includes at least one of the following: a signal received by the terminal on a time-frequency resource corresponding to the CSI-RS, and downlink channel information of the base station to the terminal, a covariance matrix information of a downlink channel of the base station to the terminal, a maximum one right singular vector or a maximum two right singular vector information of a covariance matrix of the downlink channel of the base station to the terminal, the base station to Multipath direction information of the downlink channel of the terminal and amplitude information of each path.

根据本发明实施例的另一方面，还提供了一种信道状态信息的反馈方法，包括：向终端发送配置命令，所述配置信令用于通知所述终端在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息。According to another aspect of the present invention, a method for feeding back channel state information is provided, including: sending a configuration command to a terminal, where the configuration signaling is used to notify the terminal of a time-frequency resource in a predefined or configured manner. Upward reporting downlink channel state information to the base station.

在一实施方式中，在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息包括：从多种反馈类型或反馈方式中选择一种反馈类型或反馈方式在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息，其中，所述反馈类型或反馈方式包括以下至少之一：量化反馈、非量化反馈、种类type一的反馈、种类type二的反馈、种类class A的反馈、种类class B的反馈。In an embodiment, the feeding back downlink channel state information to the base station on a predefined or configured time-frequency resource includes: selecting a feedback type or a feedback manner from multiple feedback types or feedback modes in a predefined or configured manner. The downlink channel state information is fed back to the base station on the time-frequency resource, where the feedback type or the feedback mode includes at least one of the following: quantization feedback, non-quantization feedback, feedback of type type one, feedback of type type two, type class A feedback, type class B feedback.

在一实施方式中，所述量化反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型；所述非量化反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；所述种类type一的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型；所述种类type二的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；或者，所述种类type二的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型，所述种类type一的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；所述种类class A的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型，所述种类class B的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；或者，所述种类class B的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型，所述种类class A的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型。In an embodiment, the quantitative feedback is a feedback mode or a feedback type in which the feedback content includes a PMI and/or an RI; and the non-quantized feedback is a feedback content that does not include a PMI and/or an RI. a feedback mode or a feedback type; the feedback of the type type 1 is a feedback mode or a feedback type including a PMI and/or an RI; and the feedback of the type 2 is a feedback that does not include a PMI and/or an RI. The feedback of the type type 2 is that the feedback content includes a feedback mode or a feedback type of the PMI and/or the RI, and the feedback of the type type one is that the feedback content does not include the PMI and/or the RI. a feedback mode or a feedback type; the feedback of the category class A is a feedback mode or a feedback type in which the feedback content includes a PMI and/or an RI, and the feedback of the category class B is feedback that the feedback content does not include the PMI and/or the RI. The feedback of the category class B is that the feedback content includes a feedback mode or a feedback type of the PMI and/or the RI, and the feedback of the category class A is that the feedback content does not include the PMI and/or the RI. Feedback method or feedback type.

在一实施方式中，所述配置信令还用于指示所述终端是否需要反馈所述下行信道状态信息，其中，通过以下方式之一指示：使用下行控制信令中的1比特新数据指示位，以及5比特的调制、编码方式和冗余版本指示位联合指示所述终端是否需要反馈所述下行信道状态信息；使用下行控制信令中的CSI请求位以及SRS请求位联合指示所述终端是否需要反馈所述下行信道状态信息；通过高层信令为所述终端配置反馈周期和子帧偏置的方式来指示所述终端是否需要反馈所述下行信道状态信息。In an embodiment, the configuration signaling is further used to indicate whether the terminal needs to feed back the downlink channel state information, where the one bit of the new data indicator bit in the downlink control signaling is used to indicate: And the 5-bit modulation, coding mode, and the redundancy version indication bit jointly indicate whether the terminal needs to feed back the downlink channel state information; use the CSI request bit in the downlink control signaling and the SRS request bit to jointly indicate whether the terminal is The downlink channel state information needs to be fed back; the feedback period and the subframe offset are configured for the terminal by using the high layer signaling to indicate whether the terminal needs to feed back the downlink channel state information.

在一实施方式中，所述下行信道状态信息包括以下至少之一：所述终端在CSI-RS对应的时频资源上接收到的信号，所述基站到所述终端的下行信道信息，所述基站到所述终端的下行信道的协方差矩阵信息，所述基站到所述终端的下行信道的协方差矩阵的最大的1个右奇异向量或最大的2个右奇异向量信息，所述基站到所述终端的下行信道的多径方向信息和每径的幅度信息。In an embodiment, the downlink channel state information includes at least one of the following: a signal received by the terminal on a time-frequency resource corresponding to the CSI-RS, and downlink channel information of the base station to the terminal, Covariance matrix information of a downlink channel of the base station to the terminal, the base station a maximum one right singular vector or a maximum two right singular vector information of a covariance matrix of a downlink channel of the terminal, multipath direction information of the downlink channel of the base station to the terminal, and amplitude information of each path .

根据本发明实施例的再一方面，提供了一种信道状态信息的反馈装置，包括：接收模块，配置为接收基站的配置信令；反馈模块，配置为根据所述配置信令在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息。According to still another aspect of the present invention, a feedback device for channel state information is provided, including: a receiving module configured to receive configuration signaling of a base station; and a feedback module configured to be pre-defined or according to the configuration signaling The downlink channel state information is fed back to the base station on the configured time-frequency resource.

在一实施方式中，所述反馈模块包括：第一反馈单元，配置为根据所述配置信令从多种反馈类型或反馈方式中选择一种反馈类型或反馈方式在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息，其中，所述反馈类型或反馈方式包括以下至少之一：量化反馈、非量化反馈、种类type一的反馈、种类type二的反馈、种类class A的反馈、种类class B的反馈。In an embodiment, the feedback module includes: a first feedback unit, configured to select one of a plurality of feedback types or feedback manners according to the configuration signaling, and select a feedback type or a feedback manner in a predefined or configured time frequency. The downlink channel state information is fed back to the base station, where the feedback type or the feedback mode includes at least one of the following: quantization feedback, non-quantization feedback, type type one feedback, type type two feedback, type class A Feedback, feedback of category class B.

在一实施方式中，所述反馈模块包括以下之一：第二反馈单元，配置为将所述下行信道状态信息叠加到所述上行DMRS或所述测量参考信号SRS上反馈；第三反馈单元，配置为将所述下行信道状态信息乘到所述上行DMRS或所述SRS上反馈；第四反馈单元，配置为将所述下行信道状态信息进行频域扩展后映射到物理上行控制信道或物理上行共享信道对应的全部或部分时频资源上反馈。In an embodiment, the feedback module includes one of: a second feedback unit configured to superimpose the downlink channel state information on the uplink DMRS or the measurement reference signal SRS; and a third feedback unit, The fourth feedback unit is configured to perform frequency domain expansion on the downlink channel state information and then map to the physical uplink control channel or physical uplink. Feedback on all or part of the time-frequency resources corresponding to the shared channel.

在一实施方式中，所述反馈模块还配置为，在所述预先定义或配置的时频资源为TDD的特殊子帧中上行导频时隙对应的时频资源的情况下，在一个符号的上行导频时隙对应的时频资源上发送SRS，使用其余的一个或多个符号的上行导频时隙承载所述下行信道状态信息。In an embodiment, the feedback module is further configured to be in the predefined or configured When the time-frequency resource is the time-frequency resource corresponding to the uplink pilot time slot in the special subframe of the TDD, the SRS is sent on the time-frequency resource corresponding to the uplink pilot time slot of one symbol, and the remaining one or more symbols are used. The uplink pilot time slot carries the downlink channel state information.

在一实施方式中，所述装置还包括：承载模块，配置为在所述预先定义或配置的时频资源为所述上行DMRS对应的时频资源的情况下，当所述上行DMRS的频率梳数量为2、4或8时，使用其中的1个或多个频率梳承载所述下行信道状态信息。In an embodiment, the apparatus further includes: a bearer module, configured to: when the pre-defined or configured time-frequency resource is a time-frequency resource corresponding to the uplink DMRS, when the frequency comb of the uplink DMRS When the number is 2, 4 or 8, the downlink channel state information is carried by using one or more of the frequency combs.

在一实施方式中，所述承载模块包括：映射单元，配置为将所述下行信道状态信息与所述上行DMRS相乘后的信号，映射到所述1个或多个频率梳对应的时频资源上。In an embodiment, the bearer module includes: a mapping unit, configured to map a signal obtained by multiplying the downlink channel state information and the uplink DMRS to a time frequency corresponding to the one or more frequency combs Resources.

根据本发明实施例的再一方面，还提供了一种信道状态信息的反馈装置，包括：发送模块，配置为向终端发送配置命令，所述配置信令用于通知所述终端在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息。According to still another aspect of the present invention, a feedback device for channel state information is provided, including: a sending module, configured to send a configuration command to a terminal, where the configuration signaling is used to notify the terminal that it is pre-defined or The downlink channel state information is fed back to the base station on the configured time-frequency resource.

在一实施方式中，在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息包括：In an embodiment, feeding back downlink channel state information to the base station on a predefined or configured time-frequency resource includes:

从多种反馈类型或反馈方式中选择一种反馈类型或反馈方式在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息，其中，所述反馈类型或反馈方式包括以下至少之一：量化反馈、非量化反馈、种类type一的反馈、种类type二的反馈、种类class A的反馈、种类class B的反馈。Selecting a feedback type or a feedback mode from a plurality of feedback types or feedback modes to feed back downlink channel state information to the base station on a predefined or configured time-frequency resource, where the feedback type or feedback manner includes at least the following One: quantized feedback, non-quantitative feedback, feedback of type type one, feedback of type type two, feedback of type class A, feedback of type class B.

在一实施方式中，所述预先定义或配置的时频资源包括以下至少之一：上行DMRS对应的时频资源、与上行DMRS所占时域符号相邻的时域符号对应的时频资源、SRS对应的时频资源、物理上行控制信道对应的全部或部分时频资源、物理上行共享信道对应的全部或部分时频资源、TDD的特殊子帧中上行导频时隙对应的时频资源。 In an embodiment, the pre-defined or configured time-frequency resource includes at least one of: a time-frequency resource corresponding to the uplink DMRS, a time-frequency resource corresponding to a time-domain symbol adjacent to the time-domain symbol occupied by the uplink DMRS, The time-frequency resource corresponding to the SRS, all or part of the time-frequency resource corresponding to the physical uplink control channel, all or part of the time-frequency resource corresponding to the physical uplink shared channel, and the time-frequency resource corresponding to the uplink pilot time slot in the special subframe of the TDD.

根据本发明实施例的再一方面，还提供了一种计算机存储介质，该计算机存储介质存储有计算机程序，该计算机程序配置为执行上述信道状态信息的反馈方法。According to still another aspect of an embodiment of the present invention, there is also provided a computer storage medium storing a computer program configured to perform a feedback method of the channel state information.

通过本发明，采用接收基站的配置信令；根据所述配置信令在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息，解决了相关技术中在LTE-A或5G通信***中信道状态信息的反馈存在导致大量下行导频资源开销的浪费以及反馈量大的问题，减少了下行导频资源开销的浪费和终端的反馈量。According to the present invention, the configuration signaling of the receiving base station is adopted; the downlink channel state information is fed back to the base station on the pre-defined or configured time-frequency resources according to the configuration signaling, and the LTE-A or 5G communication in the related art is solved. The feedback of the channel state information in the system causes a waste of a large amount of downlink pilot resource overhead and a large amount of feedback, which reduces the waste of downlink pilot resource overhead and the feedback amount of the terminal.

附图说明DRAWINGS

此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

图1是根据相关技术中FDD***的帧结构示意图一；1 is a schematic diagram 1 of a frame structure of an FDD system according to the related art;

图2是根据相关技术中FDD***的帧结构示意图二；2 is a second schematic diagram of a frame structure of an FDD system according to the related art;

图3是根据本发明实施例的信道状态信息的反馈方法的流程图；3 is a flowchart of a method for feeding back channel state information according to an embodiment of the present invention;

图4是根据本发明实施例的信道状态信息的反馈装置的框图；4 is a block diagram of a feedback device for channel state information according to an embodiment of the present invention;

图5是根据本发明优选实施例的信道状态信息的反馈装置的框图一；5 is a block diagram 1 of a feedback device for channel state information in accordance with a preferred embodiment of the present invention;

图6是根据本发明优选实施例的信道状态信息的反馈装置的框图二；6 is a block diagram 2 of a feedback device for channel state information in accordance with a preferred embodiment of the present invention;

图7是根据本发明实施例的在TDD子帧的上行导频时隙反馈下行信道状态信息的示意图。FIG. 7 is a schematic diagram of feeding back downlink channel state information in an uplink pilot time slot of a TDD subframe according to an embodiment of the present invention.

具体实施方式detailed description

下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

本发明实施例提供了一种信道状态信息的反馈方法，图3是根据本发明实施例的信道状态信息的反馈方法的流程图，如图3所示，包括：An embodiment of the present invention provides a method for feeding back channel state information, and FIG. 3 is a method according to the present disclosure. A flowchart of a method for feeding back channel state information in the embodiment, as shown in FIG. 3, includes:

步骤S302，接收基站的配置信令；Step S302, receiving configuration signaling of the base station;

步骤S304，根据该配置信令在预先定义或配置的时频资源上向该基站反馈下行信道状态信息。Step S304, feeding back downlink channel state information to the base station on the pre-defined or configured time-frequency resource according to the configuration signaling.

通过上述步骤，接收基站的配置信令；根据该配置信令在预先定义或配置的时频资源上向该基站反馈下行信道状态信息，解决了相关技术中在LTE-A或5G通信***中信道状态信息的反馈存在导致大量下行导频资源开销的浪费以及反馈量大的问题，减少了下行导频资源开销的浪费和终端的反馈量。Receiving the configuration signaling of the base station by using the foregoing steps, and feeding back the downlink channel state information to the base station on the pre-defined or configured time-frequency resources according to the configuration signaling, and solving the related art in the LTE-A or 5G communication system. The feedback of the status information has a problem of waste of a large amount of downlink pilot resource overhead and a large amount of feedback, which reduces the waste of downlink pilot resource overhead and the feedback amount of the terminal.

在一实施方式中，根据该配置信令在预先定义或配置的时频资源上向该基站反馈下行信道状态信息包括：根据该配置信令从多种反馈类型或反馈方式中选择一种反馈类型或反馈方式在预先定义或配置的时频资源上向该基站反馈下行信道状态信息，其中，该反馈类型或反馈方式包括以下至少之一：量化反馈、非量化反馈、种类type一的反馈、种类type二的反馈、种类class A的反馈、种类class B的反馈。In an embodiment, the feeding back downlink channel state information to the base station on the pre-defined or configured time-frequency resource according to the configuration signaling includes: selecting one feedback type from multiple feedback types or feedback manners according to the configuration signaling. Or the feedback mode feeds back downlink channel state information to the base station on a predefined or configured time-frequency resource, where the feedback type or the feedback mode includes at least one of the following: quantization feedback, non-quantization feedback, type type one feedback, and type Feedback of type 2, feedback of type class A, feedback of type class B.

在一实施方式中，该量化反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型；该非量化反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；该种类type一的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型；该种类type二的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；或者，该种类type二的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型，该种类type一的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；该种类class A的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型，该种类class B的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；或者，该种类class B的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型，该种类class A的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型。In an embodiment, the quantitative feedback is a feedback mode or a feedback type in which the feedback content includes a PMI and/or an RI; the non-quantized feedback is a feedback mode or a feedback type in which the feedback content does not include the PMI and/or the RI; The feedback of type 1 is a feedback mode or a feedback type in which the feedback content includes PMI and/or RI; the feedback of the type 2 is a feedback mode or a feedback type in which the feedback content does not include PMI and/or RI; or, the type type The feedback of the second part is that the feedback content includes a feedback mode or a feedback type of PMI and/or RI, and the feedback of the type type 1 is a feedback mode or a feedback type in which the feedback content does not include PMI and/or RI; feedback of the category class A The feedback content includes a feedback mode or a feedback type of the PMI and/or the RI. The feedback of the class B is that the feedback content does not include the feedback mode or the feedback type of the PMI and/or the RI; or the feedback of the class B is The feedback content includes the feedback mode or feedback type of PMI and/or RI. The feedback of the category class A is a feedback mode or feedback type in which the feedback content does not include PMI and/or RI.

在一实施方式中，该预先定义或配置的时频资源包括以下至少之一：上行DMRS对应的时频资源、与上行DMRS所占时域符号相邻的时域符号对应的时频资源、SRS对应的时频资源、物理上行控制信道对应的全部或部分时频资源、物理上行共享信道对应的全部或部分时频资源、TDD的特殊子帧中上行导频时隙对应的时频资源。In an embodiment, the pre-defined or configured time-frequency resource includes at least one of: a time-frequency resource corresponding to the uplink DMRS, a time-frequency resource corresponding to a time-domain symbol adjacent to the time-domain symbol occupied by the uplink DMRS, and an SRS. The corresponding time-frequency resource, all or part of the time-frequency resource corresponding to the physical uplink control channel, all or part of the time-frequency resource corresponding to the physical uplink shared channel, and the time-frequency resource corresponding to the uplink pilot time slot in the special subframe of the TDD.

在一实施方式中，根据该配置信令在预先定义或配置的时频资源上反馈该下行信道状态信息包括以下之一：将该下行信道状态信息叠加到该上行DMRS或该SRS上反馈；将该下行信道状态信息乘到该上行DMRS或该SRS上反馈；将该下行信道状态信息进行频域扩展后映射到物理上行控制信道或物理上行共享信道对应的全部或部分时频资源上反馈。In an embodiment, the downlink channel state information is fed back to the pre-defined or configured time-frequency resource according to the configuration signaling, including: adding the downlink channel state information to the uplink DMRS or the SRS feedback; The downlink channel state information is multiplied to the uplink DMRS or the SRS feedback; the downlink channel state information is frequency domain extended and then mapped to all or part of the time-frequency resources corresponding to the physical uplink control channel or the physical uplink shared channel.

在一实施方式中，在该预先定义或配置的时频资源为TDD的特殊子帧中上行导频时隙对应的时频资源的情况下，根据该配置信令在预先定义或配置的时频资源上向该基站反馈下行信道状态信息包括：在一个符号的上行导频时隙对应的时频资源上发送SRS，使用其余的一个或多个符号的上行导频时隙承载该下行信道状态信息。In an embodiment, when the pre-defined or configured time-frequency resource is a time-frequency resource corresponding to the uplink pilot time slot in the special subframe of the TDD, the time-frequency is predefined or configured according to the configuration signaling. The feeding back the downlink channel state information to the base station includes: transmitting the SRS on the time-frequency resource corresponding to the uplink pilot time slot of one symbol, and using the uplink pilot time slot of the remaining one or more symbols to carry the downlink channel state information. .

在一实施方式中，在该预先定义或配置的时频资源为该上行DMRS对应的时频资源的情况下，该方法还包括：当该上行DMRS的频率梳数量为2、4或8时，使用其中的1个或多个频率梳承载该下行信道状态信息。In an embodiment, when the time-frequency resource of the uplink DMRS is the time-frequency resource corresponding to the uplink DMRS, the method further includes: when the number of frequency combs of the uplink DMRS is 2, 4, or 8, The downlink channel state information is carried by using one or more of the frequency combs.

在一实施方式中，该使用其中的1个或多个频率梳承载下行信道状态信息包括：将该下行信道状态信息与该上行DMRS相乘后的信号，映射到该1个或多个频率梳对应的时频资源上。In an embodiment, the using one or more frequency combs to carry the downlink channel state information includes: mapping the downlink channel state information to the uplink DMRS, and mapping the signal to the one or more frequency combs Corresponding time-frequency resources.

在一实施方式中，该配置信令还用于指示该终端是否需要反馈该下行信道状态信息，其中，通过以下方式之一指示：使用下行控制信令中的1 比特数据指示位，以及5比特的调制、编码方式和冗余版本指示位联合指示该终端是否需要反馈该下行信道状态信息；使用下行控制信令中的CSI请求位以及SRS请求位联合指示该终端是否需要反馈该下行信道状态信息；通过高层信令为该终端配置反馈周期和子帧偏置的方式来指示该终端是否需要反馈该下行信道状态信息。In an embodiment, the configuration signaling is further used to indicate whether the terminal needs to feed back the downlink channel state information, where, by using one of the following manners: using 1 in the downlink control signaling The bit data indication bit, and the 5-bit modulation, coding mode, and redundancy version indication bit jointly indicate whether the terminal needs to feed back the downlink channel state information; jointly indicate the terminal by using a CSI request bit and an SRS request bit in the downlink control signaling. Whether the downlink channel state information needs to be fed back; the feedback period and the subframe offset are configured for the terminal by using the high layer signaling to indicate whether the terminal needs to feed back the downlink channel state information.

在一实施方式中，该下行信道状态信息包括以下至少之一：该终端在CSI-RS对应的时频资源上接收到的信号，该基站到该终端的下行信道信息，该基站到该终端的下行信道的协方差矩阵信息，该基站到该终端的下行信道的协方差矩阵的最大的1个右奇异向量或最大的2个右奇异向量信息，该基站到该终端的下行信道的多径方向信息和每径的幅度信息。In an embodiment, the downlink channel state information includes at least one of the following: a signal received by the terminal on a time-frequency resource corresponding to the CSI-RS, and downlink channel information of the base station to the terminal, and the base station to the terminal The covariance matrix information of the downlink channel, the largest one right singular vector or the largest two right singular vector information of the covariance matrix of the downlink channel of the base station to the terminal, and the multipath direction of the downlink channel of the base station to the terminal Information and amplitude information for each path.

本发明实施例还提供了一种信道状态信息的反馈方法，包括：向终端发送配置命令，该配置信令用于通知该终端在预先定义或配置的时频资源上向该基站反馈下行信道状态信息。The embodiment of the present invention further provides a method for feeding back channel state information, including: sending a configuration command to a terminal, where the configuration signaling is used to notify the terminal to feed back a downlink channel state to the base station on a predefined or configured time-frequency resource. information.

在一实施方式中，在预先定义或配置的时频资源上向该基站反馈下行信道状态信息包括：从多种反馈类型或反馈方式中选择一种反馈类型或反馈方式在预先定义或配置的时频资源上向该基站反馈下行信道状态信息，其中，该反馈类型或反馈方式包括以下至少之一：量化反馈、非量化反馈、种类type一的反馈、种类type二的反馈、种类class A的反馈、种类class B的反馈。In an embodiment, the feeding back downlink channel state information to the base station on a predefined or configured time-frequency resource includes: selecting a feedback type or a feedback mode from multiple feedback types or feedback modes when predefined or configured. The downlink channel state information is fed back to the base station on the frequency resource, where the feedback type or the feedback mode includes at least one of the following: quantization feedback, non-quantitative feedback, feedback of type type one, feedback of type type two, feedback of type class A , type class B feedback.

在一实施方式中，该量化反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型；该非量化反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；该种类type一的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型；该种类type二的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；或者，该种类type二的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型，该种类type一的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；该种类class A的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型，该种类class B的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；或者，该种类class B的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型，该种类class A的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型。In an embodiment, the quantitative feedback is a feedback mode or a feedback type in which the feedback content includes a PMI and/or an RI; the non-quantized feedback is a feedback mode or a feedback type in which the feedback content does not include the PMI and/or the RI; The feedback of type 1 is a feedback mode or a feedback type in which the feedback content includes PMI and/or RI; the feedback of the type 2 is a feedback mode or a feedback type in which the feedback content does not include PMI and/or RI; or, the type type The feedback of the second part is that the feedback content includes a feedback mode or a feedback type of PMI and/or RI, and the feedback of the type type one is feedback content. The feedback mode or the feedback type of the PMI and/or the RI is not included; the feedback of the class A is that the feedback content includes the feedback mode or the feedback type of the PMI and/or the RI, and the feedback of the class B is that the feedback content does not include The feedback mode or the feedback type of the PMI and/or the RI; or the feedback of the class B is the feedback mode or the feedback type including the PMI and/or the RI, and the feedback of the class A is that the feedback content does not include the PMI. And/or RI feedback or feedback type.

在一实施方式中，该配置信令还用于指示该终端是否需要反馈该下行信道状态信息，其中，通过以下方式之一指示：使用下行控制信令中的1比特新数据指示位，以及5比特的调制、编码方式和冗余版本指示位联合指示该终端是否需要反馈该下行信道状态信息；使用下行控制信令中的CSI请求位以及SRS请求位联合指示该终端是否需要反馈该下行信道状态信息；通过高层信令为该终端配置反馈周期和子帧偏置的方式来指示该终端是否需要反馈该下行信道状态信息。In an embodiment, the configuration signaling is further used to indicate whether the terminal needs to feed back the downlink channel state information, where, by using one of the following manners: using a 1-bit new data indicator bit in the downlink control signaling, and The bit modulation, the coding mode, and the redundancy version indication bit jointly indicate whether the terminal needs to feed back the downlink channel state information; and the CSI request bit and the SRS request bit in the downlink control signaling jointly indicate whether the terminal needs to feed back the downlink channel state. The information is configured by the high-level signaling to configure the feedback period and the subframe offset to indicate whether the terminal needs to feed back the downlink channel state information.

本发明实施例提供了一种信道状态信息的反馈装置，图4是根据本发明实施例的信道状态信息的反馈装置的框图，如图4所示，包括： The embodiment of the present invention provides a feedback device for channel state information. FIG. 4 is a block diagram of a feedback device for channel state information according to an embodiment of the present invention. As shown in FIG. 4, the method includes:

接收模块42，配置为接收基站的配置信令；The receiving module 42 is configured to receive configuration signaling of the base station;

反馈模块44，配置为根据该配置信令在预先定义或配置的时频资源上向该基站反馈下行信道状态信息。The feedback module 44 is configured to feed back downlink channel state information to the base station on the predefined or configured time-frequency resources according to the configuration signaling.

图5是根据本发明优选实施例的信道状态信息的反馈装置的框图一，如图5所示，反馈模块44包括：FIG. 5 is a block diagram of a feedback device for channel state information according to a preferred embodiment of the present invention. As shown in FIG. 5, the feedback module 44 includes:

第一反馈单元52，配置为根据该配置信令从多种反馈类型或反馈方式中选择一种反馈类型或反馈方式在预先定义或配置的时频资源上向该基站反馈下行信道状态信息，其中，该反馈类型或反馈方式包括以下至少之一：量化反馈、非量化反馈、种类type一的反馈、种类type二的反馈、种类class A的反馈、种类class B的反馈。The first feedback unit 52 is configured to: according to the configuration signaling, select one feedback type or feedback manner from multiple feedback types or feedback manners to feed back downlink channel state information to the base station on a predefined or configured time-frequency resource, where The feedback type or the feedback manner includes at least one of the following: quantization feedback, non-quantitative feedback, feedback of type type one, feedback of type type two, feedback of category class A, and feedback of category class B.

图6是根据本发明优选实施例的信道状态信息的反馈装置的框图二，如图6所示，反馈模块44包括以下之一：6 is a block diagram 2 of a feedback device for channel state information in accordance with a preferred embodiment of the present invention. As shown in FIG. 6, the feedback module 44 includes one of the following:

第二反馈单元62，配置为将该下行信道状态信息叠加到该上行DMRS或该SRS上反馈；The second feedback unit 62 is configured to superimpose the downlink channel state information on the uplink DMRS or the SRS feedback;

第三反馈单元64，配置为将该下行信道状态信息乘到该上行DMRS或该SRS上反馈；The third feedback unit 64 is configured to multiply the downlink channel state information to the uplink DMRS or the SRS feedback;

第四反馈单元66，配置为将该下行信道状态信息进行频域扩展后映射到物理上行控制信道或物理上行共享信道对应的全部或部分时频资源上反馈。The fourth feedback unit 66 is configured to perform frequency domain extension on the downlink channel state information and then map to all or part of the time-frequency resources corresponding to the physical uplink control channel or the physical uplink shared channel for feedback.

在一实施方式中，该反馈模块44还配置为，在该预先定义或配置的时频资源为TDD的特殊子帧中上行导频时隙对应的时频资源的情况下，在一个符号的上行导频时隙对应的时频资源上发送SRS，使用其余的一个或多个符号的上行导频时隙承载该下行信道状态信息。In an embodiment, the feedback module 44 is further configured to be in the pre-defined or configured time When the frequency resource is a time-frequency resource corresponding to the uplink pilot time slot in the special subframe of the TDD, the SRS is sent on the time-frequency resource corresponding to the uplink pilot time slot of one symbol, and the remaining one or more symbols are used. The uplink pilot time slot carries the downlink channel state information.

在一实施方式中，该装置还包括：承载模块，配置为在该预先定义或配置的时频资源为该上行DMRS对应的时频资源的情况下，当该上行DMRS的频率梳数量为2、4或8时，使用其中的1个或多个频率梳承载该下行信道状态信息。In an embodiment, the apparatus further includes: a bearer module, configured to: when the time-frequency resource of the uplink DMRS is the time-frequency resource corresponding to the uplink DMRS, At 4 or 8, the downlink channel state information is carried using one or more of the frequency combs.

在一实施方式中，该承载模块包括：映射单元，配置为将该下行信道状态信息与该上行DMRS相乘后的信号，映射到该1个或多个频率梳对应的时频资源上。In an embodiment, the bearer module includes: a mapping unit configured to map the signal obtained by multiplying the downlink channel state information and the uplink DMRS to a time-frequency resource corresponding to the one or more frequency combs.

本发明实施例还提供了一种信道状态信息的反馈装置，包括：发送模块，配置为向终端发送配置命令，该配置信令用于通知该终端在预先定义或配置的时频资源上向该基站反馈下行信道状态信息。The embodiment of the present invention further provides a channel state information feedback device, including: a sending module, configured to send a configuration command to the terminal, where the configuration signaling is used to notify the terminal to the predefined or configured time-frequency resource The base station feeds back downlink channel state information.

在实际应用中，所述信道状态信息的反馈装置中的各个模块所实现的功能，均可由位于信道状态信息的反馈装置中的中央处理器(CPU，Central Processing Unit)、或微处理器(MPU，Micro Processor Unit)、或数字信号处理器(DSP，Digital Signal Processor)、或现场可编程门阵列(FPGA，Field Programmable Gate Array)等实现。In practical applications, each module in the feedback device of the channel state information is implemented by each module. The function may be a central processing unit (CPU) in a feedback device of channel state information, or a microprocessor (MPU, Micro Processor Unit), or a digital signal processor (DSP), or Field Programmable Gate Array (FPGA) implementation.

下面结合优选实施例对本发明实施例进行进一步说明。The embodiments of the present invention are further described below in conjunction with the preferred embodiments.

实施例一 Embodiment 1

在本优选实施例中，基站侧信令通知用户终端在预定义或配置的时频资源上反馈下行信道状态信息，其中，预定义或配置的时频资源包括：上行DMRS对应的时频资源；In the preferred embodiment, the base station side notifies the user terminal to feed back the downlink channel state information on the predefined or configured time-frequency resource, where the predefined or configured time-frequency resource includes: the time-frequency resource corresponding to the uplink DMRS;

在一实施方式中，当上行DMRS的频率梳数量为2时，使用其中的1个频率梳(比如comb 0)上的DMRS序列用于信道估计，另外1个频率梳(比如comb 1)则用于承载需要反馈的下行信道状态信息。例如，上行调度PUSCH的带宽为24个RB，则comb 0上的DMRS序列长度为24*12/2＝144，可将comb 0频域资源分为6块，每块独立产生长度为24的DMRS序列；则在comb 1上可承载下行信道状态信息的6个元素，每个元素在频域进行了24长的频域扩频，可有效地抵御干扰，增强接收侧的信号质量。In an embodiment, when the number of frequency combs of the uplink DMRS is 2, the DMRS sequence on one of the frequency combs (such as comb 0) is used for channel estimation, and the other frequency comb (such as comb 1) is used. The downlink channel state information that needs feedback is carried. For example, if the bandwidth of the uplink scheduling PUSCH is 24 RBs, the length of the DMRS sequence on the comb 0 is 24*12/2=144, and the resource of the comb 0 frequency domain can be divided into 6 blocks, and each block independently generates a DMRS of length 24. Sequence; then 6 elements of downlink channel state information can be carried on comb1, and each element performs 24 long frequency domain spreading in the frequency domain, which can effectively resist interference and enhance the signal quality of the receiving side.

在一实施方式中，当上行DMRS的频率梳数量为4时，使用其中的1个频率梳(比如comb 0)上的DMRS序列用于信道估计，另外3个频率梳(比如comb 1、comb 2、comb 3)则用于承载需要反馈的下行信道状态信息。In an embodiment, when the number of frequency combs of the uplink DMRS is 4, the DMRS sequence on one of the frequency combs (such as comb 0) is used for channel estimation, and the other three frequency combs (such as comb 1 and comb 2) And comb 3) is used to carry downlink channel state information that needs feedback.

实施例二 Embodiment 2

在本优选实施例中，基站侧信令通知用户终端在预定义或配置的时频资源上反馈下行信道状态信息，其中，预定义或配置的时频资源包括：TDD的特殊子帧中上行导频时隙对应的时频资源； In the preferred embodiment, the base station side notifies the user terminal to feed back the downlink channel state information on the predefined or configured time-frequency resources, where the predefined or configured time-frequency resources include: the uplink guide in the special subframe of the TDD. Time-frequency resources corresponding to frequency slots;

图7是根据本发明实施例的在TDD子帧的上行导频时隙反馈下行信道状态信息的示意图，如图7所示，假定特殊子帧中配置有6个UpPTS符号，SRS的comb数量被配置为2，则4个RB上的SRS序列长度为4*12/2＝24，序列为b0,b1,…,b23。可使用第1个UpPTS符号(与GP相邻的符号)发送SRS序列，使用第2个至第6个UpPTS符号承载下行信道状态信息的元素A0、A1、A2、A3。FIG. 7 is a schematic diagram of feeding back downlink channel state information in an uplink pilot slot of a TDD subframe according to an embodiment of the present invention. As shown in FIG. 7, assuming that 6 UpPTS symbols are configured in a special subframe, the number of combs of the SRS is When configured as 2, the length of the SRS sequence on the 4 RBs is 4*12/2=24, and the sequence is b0, b1, ..., b23. The first UpPTS symbol (symbol adjacent to the GP) may be used to transmit the SRS sequence, and the second to sixth UpPTS symbols are used to carry the elements A0, A1, A2, A3 of the downlink channel state information.

实施例三 Embodiment 3

在本优选实施例中，基站侧信令通知用户终端在预定义或配置的时频资源上反馈下行信道状态信息，其中，预定义或配置的时频资源包括：上行DMRS对应的时频资源、SRS对应的时频资源、物理上行控制信道对应的全部或部分时频资源、物理上行共享信道对应的全部或部分时频资源、TDD的特殊子帧中上行导频时隙对应的时频资源。In the preferred embodiment, the base station side notifies the user terminal to feed back the downlink channel state information on the predefined or configured time-frequency resource, where the predefined or configured time-frequency resource includes: the time-frequency resource corresponding to the uplink DMRS, The time-frequency resource corresponding to the SRS, all or part of the time-frequency resource corresponding to the physical uplink control channel, all or part of the time-frequency resource corresponding to the physical uplink shared channel, and the time-frequency resource corresponding to the uplink pilot time slot in the special subframe of the TDD.

在一实施方式中，使用下行控制信令中的1比特新数据指示位以及5比特的调制和编码方式和冗余版本指示位联合指示用户终端是否需要反馈下行信道状态信息；In an embodiment, the 1-bit new data indicator bit and the 5-bit modulation and coding mode and the redundancy version indicator bit in the downlink control signaling are used to jointly indicate whether the user terminal needs to feed back downlink channel state information;

例如，使用DCI format 0或DCI format 4中1比特新数据指示位以及5比特的调制和编码方式和冗余版本指示位(对于DCI format 4，则取传输块1或传输块2对应1比特新数据指示位以及5比特的调制和编码方式和冗余版本指示位)，当新数据指示位的取值为1且调制和编码方式和冗余版本指示位取值为29或30或31时，则表示触发模拟反馈，用户终端需要将下行信道状态信息反馈给基站。For example, use the 1-bit new data indicator bit and the 5-bit modulation and coding mode and the redundancy version indication bit in DCI format 0 or DCI format 4 (for DCI format 4, take transport block 1 or transport block 2 corresponding to 1 bit new) Data indication bit and 5-bit modulation and coding mode and redundancy version indication bit), when the value of the new data indication bit is 1 and the modulation and coding mode and the redundancy version indication bit are 29 or 30 or 31, Then, the analog feedback is triggered, and the user terminal needs to feed back the downlink channel state information to the base station.

或者，使用下行控制信令中的CSI请求位以及SRS请求位联合指示用户终端是否需要反馈下行信道状态信息，例如，当CSI请求位的状态为“01”或“10”或“11”且SRS请问位状态为“1”或“01”或“10”或“11”时，则表示触发模拟反馈，用户终端需要将下行信道状态信息反馈给基站。 Alternatively, the CSI request bit and the SRS request bit in the downlink control signaling are used to jointly indicate whether the user terminal needs to feed back downlink channel state information, for example, when the status of the CSI request bit is “01” or “10” or “11” and the SRS If the bit status is "1" or "01" or "10" or "11", it means that the analog feedback is triggered, and the user terminal needs to feed back the downlink channel state information to the base station.

实施例四Embodiment 4

在本优选实施例中，基站通过高层信令为用户终端配置反馈周期和子帧偏置的方式来指示用户终端向所述基站反馈下行信道状态信息。In the preferred embodiment, the base station configures the feedback period and the subframe offset for the user terminal by using the high layer signaling to indicate that the user terminal feeds back the downlink channel state information to the base station.

例如，当用户终端所处的子帧时隙满足

modT_AF∈Δ_AF的关系时，则表示用户需要在当前子帧进行模拟反馈。其中，n_s为无线帧中的时隙编号，T_AF为反馈周期，Δ_AF为子帧偏置。For example, when the subframe time slot in which the user terminal is located is satisfied

When the relationship of modT _AF ∈Δ _AF indicates that the user needs to perform analog feedback in the current subframe. Where n _s is the slot number in the radio frame, T _AF is the feedback period, and Δ _AF is the subframe offset.

当下行信道状态信息承载在SRS上时，配置为模拟反馈周期应为用户专有的SRS周期的子集；当下行信道状态信息承载在PUCCH上时，如果在当前子帧既要反馈周期CQI又要进行模拟反馈，则只传CQI而进行模拟反馈，或者只进行模拟反馈而不传CQI。When the downlink channel state information is carried on the SRS, the analog feedback period should be a subset of the user-specific SRS period; when the downlink channel state information is carried on the PUCCH, if the current subframe has to feed back the periodic CQI, To perform analog feedback, only CQI is passed for analog feedback, or only analog feedback is passed without CQI.

实施例五Embodiment 5

在本优选实施例中，基站侧信令通知用户终端从多种反馈类似或反馈方式中选择一种反馈类似或反馈方式向基站反馈下行信道状态信息，其中，反馈类型或反馈方式包括以下至少之一：In the preferred embodiment, the base station side notifies the user terminal to select a feedback similar or feedback mode to feed back the downlink channel state information to the base station, where the feedback type or the feedback mode includes at least the following One:

量化反馈、非量化反馈、种类type一的反馈、种类type二的反馈、种类class A的反馈、种类class B的反馈。Quantization feedback, non-quantitative feedback, feedback of type type one, feedback of type type two, feedback of type class A, feedback of type class B.

其中，量化反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型；非量化反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；The quantitative feedback is that the feedback content includes a feedback mode or a feedback type of PMI and/or RI; the non-quantized feedback is a feedback mode or a feedback type in which the feedback content does not include PMI and/or RI;

其中，种类type一的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型；种类type二的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；或者，种类type二的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型；种类type一的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型The feedback of the type type 1 is a feedback mode or a feedback type including a PMI and/or an RI; the feedback of the type 2 is a feedback mode or a feedback type in which the feedback content does not include the PMI and/or the RI; or The feedback of type 2 is that the feedback content includes the feedback mode or feedback type of PMI and/or RI; the feedback of type type one is the feedback mode or feedback type of the feedback content that does not include PMI and/or RI.

其中，种类class A的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型；种类class B的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；或者，种类class B的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型；种类class A的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；The feedback of the category class A is that the feedback content includes the feedback mode or the feedback type of the PMI and/or the RI; the feedback of the category class B is that the feedback content does not include the feedback of the PMI and/or the RI. The mode or feedback type; or, the feedback of the category class B is the feedback mode or the feedback type including the PMI and/or the RI; the feedback of the category class A is the feedback mode or feedback that the feedback content does not include the PMI and/or the RI. Types of;

当基站信令指示的方式为量化反馈或种类type一或种类class A的反馈时，则用户终端通过测量CSI-RS，计算出PMI/RI/CQI，然后将PMI/RI/CQI反馈给基站；When the manner indicated by the base station signaling is the quantization feedback or the feedback of the type type 1 or the class class A, the user terminal calculates the PMI/RI/CQI by measuring the CSI-RS, and then feeds the PMI/RI/CQI to the base station;

当基站信令指示的方式为非量化反馈(或称为模拟反馈)或种类type二或或种类class B的反馈时，则用户终端通过测量CSI-RS，计算出基站到终端的下行信道信息，或者计算出基站到终端的下行信道的协方差矩阵信息或协方差矩阵的最大的1个右奇异向量或最大的2个右奇异向量信息，或者计算出基站到所述终端的下行信道的多径方向信息和每径的幅度信息，然后反馈给基站；When the manner indicated by the base station signaling is non-quantized feedback (or analog feedback) or feedback of type 2 or class B, the user terminal calculates the downlink channel information of the base station to the terminal by measuring the CSI-RS. Or calculating the covariance matrix information of the downlink channel of the base station to the terminal or the largest one right singular vector or the largest two right singular vector information of the covariance matrix, or calculating the multipath of the downlink channel of the base station to the terminal Direction information and amplitude information of each path, and then fed back to the base station;

或者，当基站信令指示的方式为非量化反馈(或称为模拟反馈)或种类type二或或种类class B的反馈时，则用户终端将CSI-RS时频资源上接收到信号，叠加或相乘到上行SRS或上行DMRS上，通过这种方式反馈信道状态信息给基站。Or, when the manner indicated by the base station signaling is non-quantized feedback (or is called analog feedback) or feedback of type 2 or class B, the user terminal receives the signal on the CSI-RS time-frequency resource, superimposes or Multiplying to the uplink SRS or the uplink DMRS, in this way, feeding back channel state information to the base station.

显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

相应地，本发明实施例还提供一种计算机存储介质，其中存储有计算机程序，该计算机程序配置为执行本发明实施例的信道状态信息的反馈方法。Correspondingly, an embodiment of the present invention further provides a computer storage medium in which a calculation is stored. The computer program is configured to perform a feedback method of channel state information in an embodiment of the present invention.

以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

工业实用性Industrial applicability

本发明实施例，采用接收基站的配置信令；根据所述配置信令在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息，解决了信道状态信息的反馈存在导致大量下行导频资源开销的浪费以及反馈量大的问题，减少了下行导频资源开销的浪费和终端的反馈量。 In the embodiment of the present invention, the configuration signaling of the receiving base station is adopted; the downlink channel state information is fed back to the base station on the pre-defined or configured time-frequency resources according to the configuration signaling, and the feedback of the channel state information is solved, which causes a large number of downlinks. The waste of pilot resource overhead and the large amount of feedback reduce the waste of downlink pilot resource overhead and the feedback amount of the terminal.

Claims

一种信道状态信息的反馈方法，包括：A method for feeding back channel state information includes:

接收基站的配置信令；Receiving configuration signaling of the base station;

根据所述配置信令在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息。And downlinking channel state information to the base station according to the configuration signaling on a predefined or configured time-frequency resource.
根据权利要求1所述的方法，其中，根据所述配置信令在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息包括：The method according to claim 1, wherein the feeding back downlink channel state information to the base station on the pre-defined or configured time-frequency resources according to the configuration signaling comprises:

根据所述配置信令从多种反馈类型或反馈方式中选择一种反馈类型或反馈方式在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息，其中，所述反馈类型或反馈方式包括以下至少之一：量化反馈、非量化反馈、种类type一的反馈、种类type二的反馈、种类class A的反馈、种类class B的反馈。And selecting, according to the configuration signaling, a feedback type or a feedback manner from multiple feedback types or feedback manners, and feeding back downlink channel state information to the base station on a predefined or configured time-frequency resource, where the feedback type or The feedback method includes at least one of the following: quantization feedback, non-quantitative feedback, feedback of type type one, feedback of type type two, feedback of category class A, and feedback of category class B.
根据权利要求2所述的方法，其中，The method of claim 2, wherein

所述量化反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型；The quantitative feedback is a feedback mode or a feedback type in which the feedback content includes a PMI and/or an RI;

所述非量化反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；The non-quantized feedback is a feedback mode or a feedback type in which the feedback content does not include a PMI and/or an RI;

所述种类type一的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型；所述种类type二的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；或者，所述种类type二的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型，所述种类type一的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；The feedback of the type type 1 is a feedback mode or a feedback type in which the feedback content includes a PMI and/or an RI; and the feedback of the type 2 is a feedback mode or a feedback type in which the feedback content does not include the PMI and/or the RI; or The feedback of the type 2 is a feedback mode or a feedback type in which the feedback content includes a PMI and/or an RI, and the feedback of the type type 1 is a feedback mode or a feedback type in which the feedback content does not include the PMI and/or the RI;

所述种类class A的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型，所述种类class B的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；或者，所述种类class B的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型，所述种类class A的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型。The feedback of the category class A is a feedback mode or a feedback type in which the feedback content includes a PMI and/or an RI, and the feedback of the category class B is a feedback mode or a feedback type in which the feedback content does not include the PMI and/or the RI; The feedback of the category class B is that the feedback content includes a feedback mode or a feedback type of the PMI and/or the RI, and the feedback of the category class A is that the feedback content is not included. Feedback or feedback type with PMI and / or RI.
根据权利要求1所述的方法，其中，所述预先定义或配置的时频资源包括以下至少之一：上行解调参考信号DMRS对应的时频资源、与上行解调参考信号DMRS所占时域符号相邻的时域符号对应的时频资源、测量参考信号SRS对应的时频资源、物理上行控制信道对应的全部或部分时频资源、物理上行共享信道对应的全部或部分时频资源、时分双工TDD的特殊子帧中上行导频时隙对应的时频资源。The method according to claim 1, wherein the pre-defined or configured time-frequency resource comprises at least one of: a time-frequency resource corresponding to the uplink demodulation reference signal DMRS, and a time domain occupied by the uplink demodulation reference signal DMRS The time-frequency resource corresponding to the symbol adjacent to the time domain symbol, the time-frequency resource corresponding to the measurement reference signal SRS, all or part of the time-frequency resource corresponding to the physical uplink control channel, all or part of the time-frequency resource corresponding to the physical uplink shared channel, and the time division The time-frequency resource corresponding to the uplink pilot time slot in the special subframe of the duplex TDD.
根据权利要求4所述的方法，其中，根据所述配置信令在预先定义或配置的时频资源上反馈所述下行信道状态信息包括以下之一：The method according to claim 4, wherein the feeding back the downlink channel state information on the predefined or configured time-frequency resources according to the configuration signaling comprises one of the following:

将所述下行信道状态信息叠加到所述上行解调参考信号DMRS或所述测量参考信号SRS上反馈；Superimposing the downlink channel state information on the uplink demodulation reference signal DMRS or the measurement reference signal SRS;

将所述下行信道状态信息乘到所述上行解调参考信号DMRS或所述测量参考信号SRS上反馈；Multiplying the downlink channel state information to the uplink demodulation reference signal DMRS or the measurement reference signal SRS for feedback;

将所述下行信道状态信息进行频域扩展后映射到物理上行控制信道或物理上行共享信道对应的全部或部分时频资源上反馈。The downlink channel state information is frequency-domain extended and then mapped to all or part of the time-frequency resources corresponding to the physical uplink control channel or the physical uplink shared channel.
根据权利要求4所述的方法，其中，在所述预先定义或配置的时频资源为TDD的特殊子帧中上行导频时隙对应的时频资源的情况下，根据所述配置信令在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息包括：The method according to claim 4, wherein, in the case that the time-frequency resource corresponding to the uplink pilot time slot is in the special subframe of the TDD, the pre-defined or configured time-frequency resource is in accordance with the configuration signaling. The feedback of the downlink channel state information to the base station on the pre-defined or configured time-frequency resource includes:

在一个符号的上行导频时隙对应的时频资源上发送SRS，使用其余的一个或多个符号的上行导频时隙承载所述下行信道状态信息。The SRS is transmitted on the time-frequency resource corresponding to the uplink pilot time slot of one symbol, and the downlink channel state information is carried by using the uplink pilot time slot of the remaining one or more symbols.
根据权利要求4所述的方法，其中，在所述预先定义或配置的时频资源为所述上行解调参考信号DMRS对应的时频资源的情况下，所述方法还包括：The method according to claim 4, wherein, in the case that the time-frequency resource of the uplink demodulation reference signal DMRS is the time-frequency resource corresponding to the uplink demodulation reference signal DMRS, the method further includes:

当所述上行解调参考信号DMRS的频率梳数量为2、4或8时，使用其中的1个或多个频率梳承载所述下行信道状态信息。When the number of frequency combs of the uplink demodulation reference signal DMRS is 2, 4 or 8, use One or more frequency combs in the bearer carry the downlink channel state information.
根据权利要求7所述的方法，其中，所述使用其中的1个或多个频率梳承载下行信道状态信息包括：The method according to claim 7, wherein said using one or more of the frequency combs to carry downlink channel state information comprises:

将所述下行信道状态信息与所述上行解调参考信号DMRS相乘后的信号，映射到所述1个或多个频率梳对应的时频资源上。The signal obtained by multiplying the downlink channel state information and the uplink demodulation reference signal DMRS is mapped to a time-frequency resource corresponding to the one or more frequency combs.
根据权利要求1至8中任一项所述的方法，其中，所述配置信令还用于指示终端是否需要反馈所述下行信道状态信息，其中，通过以下方式之一指示：The method according to any one of claims 1 to 8, wherein the configuration signaling is further used to indicate whether the terminal needs to feed back the downlink channel state information, wherein the indication is indicated by one of the following ways:

使用下行控制信令中的1比特数据指示位，以及5比特的调制、编码方式和冗余版本指示位联合指示所述终端是否需要反馈所述下行信道状态信息；Using a 1-bit data indication bit in the downlink control signaling, and a 5-bit modulation, coding mode, and a redundancy version indication bit jointly indicating whether the terminal needs to feed back the downlink channel state information;

使用下行控制信令中的CSI请求位以及SRS请求位联合指示所述终端是否需要反馈所述下行信道状态信息；Using the CSI request bit and the SRS request bit in the downlink control signaling to jointly indicate whether the terminal needs to feed back the downlink channel state information;

通过高层信令为所述终端配置反馈周期和子帧偏置的方式来指示所述终端是否需要反馈所述下行信道状态信息。The manner of configuring the feedback period and the subframe offset for the terminal by using the high layer signaling to indicate whether the terminal needs to feed back the downlink channel state information.
根据权利要求9所述的方法，其中，所述下行信道状态信息包括以下至少之一：The method of claim 9, wherein the downlink channel state information comprises at least one of the following:

所述终端在信道状态信息参考信号CSI-RS对应的时频资源上接收到的信号，所述基站到所述终端的下行信道信息，所述基站到所述终端的下行信道的协方差矩阵信息，所述基站到所述终端的下行信道的协方差矩阵的最大的1个右奇异向量或最大的2个右奇异向量信息，所述基站到所述终端的下行信道的多径方向信息和每径的幅度信息。a signal received by the terminal on a time-frequency resource corresponding to the channel state information reference signal CSI-RS, downlink channel information of the base station to the terminal, and covariance matrix information of the downlink channel of the base station to the terminal a maximum one right singular vector or a maximum two right singular vector information of a covariance matrix of the downlink channel of the base station to the terminal, and multipath direction information of the downlink channel of the base station to the terminal and each The amplitude information of the path.
一种信道状态信息的反馈方法，包括：A method for feeding back channel state information includes:

向终端发送配置命令，所述配置信令用于通知所述终端在预先定义或配置的时频资源上向基站反馈下行信道状态信息。 Sending a configuration command to the terminal, where the configuration signaling is used to notify the terminal to feed back downlink channel state information to the base station on a predefined or configured time-frequency resource.
根据权利要求11所述的方法，其中，在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息包括：The method according to claim 11, wherein the feeding back downlink channel state information to the base station on a pre-defined or configured time-frequency resource comprises:

从多种反馈类型或反馈方式中选择一种反馈类型或反馈方式在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息，其中，所述反馈类型或反馈方式包括以下至少之一：量化反馈、非量化反馈、种类type一的反馈、种类type二的反馈、种类class A的反馈、种类class B的反馈。Selecting a feedback type or a feedback mode from a plurality of feedback types or feedback modes to feed back downlink channel state information to the base station on a predefined or configured time-frequency resource, where the feedback type or feedback manner includes at least the following One: quantized feedback, non-quantitative feedback, feedback of type type one, feedback of type type two, feedback of type class A, feedback of type class B.
根据权利要求12所述的方法，其中，The method of claim 12, wherein

所述量化反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型；The quantitative feedback is a feedback mode or a feedback type in which the feedback content includes a PMI and/or an RI;

所述非量化反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；The non-quantized feedback is a feedback mode or a feedback type in which the feedback content does not include a PMI and/or an RI;

所述种类type一的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型；所述种类type二的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；或者，所述种类type二的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型，所述种类type一的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；The feedback of the type type 1 is a feedback mode or a feedback type in which the feedback content includes a PMI and/or an RI; and the feedback of the type 2 is a feedback mode or a feedback type in which the feedback content does not include the PMI and/or the RI; or The feedback of the type 2 is a feedback mode or a feedback type in which the feedback content includes a PMI and/or an RI, and the feedback of the type type 1 is a feedback mode or a feedback type in which the feedback content does not include the PMI and/or the RI;

所述种类class A的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型，所述种类class B的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型；或者，所述种类class B的反馈为反馈内容包含有PMI和/或RI的反馈方式或反馈类型，所述种类class A的反馈为反馈内容未包含有PMI和/或RI的反馈方式或反馈类型。The feedback of the category class A is a feedback mode or a feedback type in which the feedback content includes a PMI and/or an RI, and the feedback of the category class B is a feedback mode or a feedback type in which the feedback content does not include the PMI and/or the RI; The feedback of the category class B is a feedback mode or a feedback type in which the feedback content includes a PMI and/or an RI, and the feedback of the category class A is a feedback mode or a feedback type in which the feedback content does not include the PMI and/or the RI.
根据权利要求11所述的方法，其中，所述预先定义或配置的时频资源包括以下至少之一：上行解调参考信号DMRS对应的时频资源、与上行解调参考信号DMRS所占时域符号相邻的时域符号对应的时频资源、测量参考信号SRS对应的时频资源、物理上行控制信道对应的全部或部分时频资源、物理上行共享信道对应的全部或部分时频资源、时分双工TDD 的特殊子帧中上行导频时隙对应的时频资源。The method according to claim 11, wherein the pre-defined or configured time-frequency resource comprises at least one of: a time-frequency resource corresponding to the uplink demodulation reference signal DMRS, and a time domain occupied by the uplink demodulation reference signal DMRS The time-frequency resource corresponding to the symbol adjacent to the time domain symbol, the time-frequency resource corresponding to the measurement reference signal SRS, all or part of the time-frequency resource corresponding to the physical uplink control channel, all or part of the time-frequency resource corresponding to the physical uplink shared channel, and the time division Duplex TDD The time-frequency resource corresponding to the uplink pilot time slot in the special subframe.
根据权利要求11至14中任一项所述的方法，其中，The method according to any one of claims 11 to 14, wherein

所述配置信令还用于指示所述终端是否需要反馈所述下行信道状态信息，其中，通过以下方式之一指示：The configuration signaling is further used to indicate whether the terminal needs to feed back the downlink channel state information, where indicated by one of the following manners:

使用下行控制信令中的1比特新数据指示位，以及5比特的调制、编码方式和冗余版本指示位联合指示所述终端是否需要反馈所述下行信道状态信息；Using a 1-bit new data indicator bit in the downlink control signaling, and a 5-bit modulation, coding mode, and a redundancy version indicator bit jointly indicating whether the terminal needs to feed back the downlink channel state information;

使用下行控制信令中的CSI请求位以及SRS请求位联合指示所述终端是否需要反馈所述下行信道状态信息；Using the CSI request bit and the SRS request bit in the downlink control signaling to jointly indicate whether the terminal needs to feed back the downlink channel state information;

通过高层信令为所述终端配置反馈周期和子帧偏置的方式来指示所述终端是否需要反馈所述下行信道状态信息。The manner of configuring the feedback period and the subframe offset for the terminal by using the high layer signaling to indicate whether the terminal needs to feed back the downlink channel state information.
根据权利要求15所述的方法，其中，所述下行信道状态信息包括以下至少之一：The method of claim 15, wherein the downlink channel state information comprises at least one of:

所述终端在信道状态信息参考信号CSI-RS对应的时频资源上接收到的信号，所述基站到所述终端的下行信道信息，所述基站到所述终端的下行信道的协方差矩阵信息，所述基站到所述终端的下行信道的协方差矩阵的最大的1个右奇异向量或最大的2个右奇异向量信息，所述基站到所述终端的下行信道的多径方向信息和每径的幅度信息。a signal received by the terminal on a time-frequency resource corresponding to the channel state information reference signal CSI-RS, downlink channel information of the base station to the terminal, and covariance matrix information of the downlink channel of the base station to the terminal a maximum one right singular vector or a maximum two right singular vector information of a covariance matrix of the downlink channel of the base station to the terminal, and multipath direction information of the downlink channel of the base station to the terminal and each The amplitude information of the path.
一种信道状态信息的反馈装置，包括：A feedback device for channel state information, comprising:

接收模块，配置为接收基站的配置信令；a receiving module configured to receive configuration signaling of the base station;

反馈模块，配置为根据所述配置信令在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息。The feedback module is configured to feed back downlink channel state information to the base station on the predefined or configured time-frequency resources according to the configuration signaling.
根据权利要求17所述的装置，其中，所述反馈模块包括：The apparatus of claim 17, wherein the feedback module comprises:

第一反馈单元，配置为根据所述配置信令从多种反馈类型或反馈方式中选择一种反馈类型或反馈方式在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息，其中，所述反馈类型或反馈方式包括以下至少之一：量化反馈、非量化反馈、种类type一的反馈、种类type二的反馈、种类class A的反馈、种类class B的反馈。a first feedback unit, configured to select, according to the configuration signaling, a feedback type or a feedback manner from multiple feedback types or feedback manners on the predefined or configured time-frequency resources to the base The station feeds back downlink channel state information, where the feedback type or feedback manner includes at least one of the following: quantization feedback, non-quantitative feedback, feedback of type type one, feedback of type type two, feedback of category class A, type class B feedback of.
根据权利要求17所述的装置，其中，所述预先定义或配置的时频资源包括以下至少之一：上行解调参考信号DMRS对应的时频资源、与上行解调参考信号DMRS所占时域符号相邻的时域符号对应的时频资源、测量参考信号SRS对应的时频资源、物理上行控制信道对应的全部或部分时频资源、物理上行共享信道对应的全部或部分时频资源、时分双工TDD的特殊子帧中上行导频时隙对应的时频资源。The apparatus according to claim 17, wherein the pre-defined or configured time-frequency resource comprises at least one of: a time-frequency resource corresponding to the uplink demodulation reference signal DMRS, and a time domain occupied by the uplink demodulation reference signal DMRS The time-frequency resource corresponding to the symbol adjacent to the time domain symbol, the time-frequency resource corresponding to the measurement reference signal SRS, all or part of the time-frequency resource corresponding to the physical uplink control channel, all or part of the time-frequency resource corresponding to the physical uplink shared channel, and the time division The time-frequency resource corresponding to the uplink pilot time slot in the special subframe of the duplex TDD.
根据权利要求19所述的装置，其中，所述反馈模块包括以下之一：The apparatus of claim 19 wherein said feedback module comprises one of:

第二反馈单元，配置为将所述下行信道状态信息叠加到所述上行解调参考信号DMRS或所述测量参考信号SRS上反馈；a second feedback unit, configured to superimpose the downlink channel state information on the uplink demodulation reference signal DMRS or the measurement reference signal SRS;

第三反馈单元，配置为将所述下行信道状态信息乘到所述上行解调参考信号DMRS或所述测量参考信号SRS上反馈；a third feedback unit, configured to multiply the downlink channel state information to the uplink demodulation reference signal DMRS or the measurement reference signal SRS;

第四反馈单元，配置为将所述下行信道状态信息进行频域扩展后映射到物理上行控制信道或物理上行共享信道对应的全部或部分时频资源上反馈。The fourth feedback unit is configured to perform frequency domain extension on the downlink channel state information and then map to all or part of the time-frequency resources corresponding to the physical uplink control channel or the physical uplink shared channel.
根据权利要求19所述的装置，其中，所述反馈模块还配置为，在所述预先定义或配置的时频资源为TDD的特殊子帧中上行导频时隙对应的时频资源的情况下，在一个符号的上行导频时隙对应的时频资源上发送SRS，使用其余的一个或多个符号的上行导频时隙承载所述下行信道状态信息。The apparatus according to claim 19, wherein the feedback module is further configured to: when the pre-defined or configured time-frequency resource is a time-frequency resource corresponding to an uplink pilot time slot in a special subframe of TDD And transmitting the SRS on the time-frequency resource corresponding to the uplink pilot time slot of one symbol, and using the uplink pilot time slot of the remaining one or more symbols to carry the downlink channel state information.
根据权利要求19所述的装置，其中，所述装置还包括：The device of claim 19, wherein the device further comprises:

承载模块，配置为在所述预先定义或配置的时频资源为所述上行解调参考信号DMRS对应的时频资源的情况下，当所述上行解调参考信号DMRS的频率梳数量为2、4或8时，使用其中的1个或多个频率梳承载所述下行信道状态信息。a bearer module configured to perform the uplink demodulation on the predefined or configured time-frequency resource In the case of the time-frequency resource corresponding to the reference signal DMRS, when the number of frequency combs of the uplink demodulation reference signal DMRS is 2, 4 or 8, one or more frequency combs are used to carry the downlink channel state information. .
根据权利要求22所述的装置，其中，所述承载模块包括：The device of claim 22, wherein the bearer module comprises:

映射单元，配置为将所述下行信道状态信息与所述上行解调参考信号DMRS相乘后的信号，映射到所述1个或多个频率梳对应的时频资源上。The mapping unit is configured to map the signal obtained by multiplying the downlink channel state information and the uplink demodulation reference signal DMRS to a time-frequency resource corresponding to the one or more frequency combs.
一种信道状态信息的反馈装置，包括：A feedback device for channel state information, comprising:

发送模块，配置为向终端发送配置命令，所述配置信令用于通知所述终端在预先定义或配置的时频资源上向基站反馈下行信道状态信息。And a sending module, configured to send a configuration command to the terminal, where the configuration signaling is used to notify the terminal to feed back downlink channel state information to the base station on a predefined or configured time-frequency resource.
根据权利要求24所述的装置，其中，在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息包括：The apparatus according to claim 24, wherein the feeding back downlink channel state information to the base station on a pre-defined or configured time-frequency resource comprises:

从多种反馈类型或反馈方式中选择一种反馈类型或反馈方式在预先定义或配置的时频资源上向所述基站反馈下行信道状态信息，其中，所述反馈类型或反馈方式包括以下至少之一：量化反馈、非量化反馈、种类type一的反馈、种类type二的反馈、种类class A的反馈、种类class B的反馈。Selecting a feedback type or a feedback mode from a plurality of feedback types or feedback modes to feed back downlink channel state information to the base station on a predefined or configured time-frequency resource, where the feedback type or feedback manner includes at least the following One: quantized feedback, non-quantitative feedback, feedback of type type one, feedback of type type two, feedback of type class A, feedback of type class B.
根据权利要求24所述的装置，其中，所述预先定义或配置的时频资源包括以下至少之一：上行解调参考信号DMRS对应的时频资源、与上行解调参考信号DMRS所占时域符号相邻的时域符号对应的时频资源、测量参考信号SRS对应的时频资源、物理上行控制信道对应的全部或部分时频资源、物理上行共享信道对应的全部或部分时频资源、时分双工TDD的特殊子帧中上行导频时隙对应的时频资源。The apparatus according to claim 24, wherein the pre-defined or configured time-frequency resource comprises at least one of: a time-frequency resource corresponding to the uplink demodulation reference signal DMRS, and a time domain occupied by the uplink demodulation reference signal DMRS The time-frequency resource corresponding to the symbol adjacent to the time domain symbol, the time-frequency resource corresponding to the measurement reference signal SRS, all or part of the time-frequency resource corresponding to the physical uplink control channel, all or part of the time-frequency resource corresponding to the physical uplink shared channel, and the time division The time-frequency resource corresponding to the uplink pilot time slot in the special subframe of the duplex TDD.
一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，该计算机可执行指令配置为执行权利要求1-16任一项所述的信道状态信息的反馈方法。 A computer storage medium having stored therein computer executable instructions configured to perform a feedback method of channel state information as claimed in any of claims 1-16.