CN105684336B - Channel measuring method and device - Google Patents

Abstract

The embodiment of the present invention provides a kind of channel measuring method and device, a kind of receiving node, comprising: module is obtained, for obtaining the quantity N of code book in code book group to be measured, N >=1；Measurement module obtains the code book group of the channel, the code book group includes N number of code book for measuring to channel；Sending module, for reporting the information of the code book group to transmitting node.Channel measuring method and device provided in an embodiment of the present invention, improve the precision for measuring and feeding back to channel.

Description

Channel measuring method and device

Technical field

The present embodiments relate to wireless communication technology field more particularly to a kind of channel measuring methods and device.

Background technique

Frequency spectrum is most important resource in wireless communication, the wireless communication system of present mainstream, such as global mobile communication (Global System for Mobile communication, GSM) system, CDMA (Code Division Multiple Access, CDMA) 2000/ wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, long term evolution (Long Term Evolution, LTE) system etc., usually all work 3GHz with Under carrier frequency on.

With the appearance of video traffic on the development of intelligent terminal, especially intelligent terminal, currently used frequency spectrum resource It has been difficult to the explosive growth for meeting user to capacity requirement.Therefore, with bigger available bandwidth high-frequency band (such as 3GHz to 200GHz), have become the candidate frequency range of Next-Generation Wireless Communication Systems.But it is used with existing wireless communications system Frequency range unlike, high-frequency band will lead to the factors such as bigger path loss, especially atmosphere, vegetation will be to high-frequency band Radio transmission brings bigger loss.Since high-frequency band can generate higher path loss, it is therefore desirable to by reducing wave beam The method of width improves the gain of antenna.

However for relatively narrow wave beam, it is poor that lesser angular deviation can bring about biggish antenna gain, therefore will be relatively narrow Wave beam be applied to cellular communication when, wave beam tracking (mainly wave beam forming (Beamforming, BF)) accuracy just become It is even more important, otherwise will affect the accuracy and reliability of data transmission.

Transmitting terminal is after the code book that feeds back after being measured according to receiving end to channel carries out precoding to data, then will be pre- What the data after coding were launched by antenna, therefore how to improve the precision that receiving end measures channel and feeds back and incite somebody to action Directly influence the accuracy and reliability of data transmission.

Summary of the invention

The embodiment of the present invention provides a kind of channel measuring method and device, improves the essence for measuring and feeding back to channel Degree.

First aspect provides a kind of receiving node, comprising:

Module is obtained, for obtaining the quantity N of code book in code book group to be measured, N >=1；

Measurement module obtains the code book group of the channel, the code book group includes N number of code for measuring to channel This；

Sending module, for reporting the information of the code book group to transmitting node.

With reference to first aspect, in a first possible implementation of that first aspect, the acquisition module is also used to obtaining It takes in the code book group to be measured after the quantity N of code book, M code book in the codebook space of the receiving node is generated The code book group space being made of at least two code book groups, each code book group in code book group space are made of N number of code book.

The first possible implementation with reference to first aspect, in a second possible implementation of that first aspect, institute A part of code book stated in code book group space at least two code book groups is identical.

The first or second of possible implementation with reference to first aspect, the third possible realization side in first aspect In formula, the sending module, specifically for reporting rope of the code book group in code book group space to the transmitting node Quotation marks.

Any possible implementation in the third possible implementation to first aspect with reference to first aspect, On the one hand in the 4th kind of possible implementation, the acquisition module, the high level sent specifically for receiving the transmitting node It include the N, the high-level signaling in signaling or physical layer dedicated signaling, the high-level signaling or the physical layer dedicated signaling Including radio resource control RRC signaling or medium access control MAC layer signaling；It is dedicated from the high-level signaling or the physical layer The N is obtained in signaling.

Any possible implementation into the 4th kind of possible implementation of first aspect with reference to first aspect, On the one hand in the 5th kind of possible implementation, the measurement module is also used to respectively using i code book as code book group Z_iTo channel It measures, obtains M as a result, i=1,2 ..., M, the M are the code book quantity in the codebook space of the receiving node；

The acquisition module, specifically for determining the best code book group Z of channel quality in the M result_i, will be described Code book group Z_iQuantity N of the number i of middle code book as code book in the code book group to be measured；

The sending module is also used to send a notification message to the transmitting node, and the notification message includes the N.

Any possible implementation into the 5th kind of possible implementation of first aspect with reference to first aspect, On the one hand in the 6th kind of possible implementation, the receiving node further include:

Receiving module, for after the sending module reports the information of the code book group to transmitting node, from moment n Start, the data after receiving N number of coding that the transmitting node is sent；

Demodulation module obtains the data to be sent for demodulating the data after N number of coding.

6th kind of possible implementation with reference to first aspect, in the 7th kind of possible implementation of first aspect, institute Sending module is stated, is also used in the receiving module since moment n, N number of coding that the transmitting node is sent is received After data afterwards, correct response confirmation message is sent to the transmitting node at the n+N-1+m moment, or in n+N-1+m Moment sends incorrect response confirmation message to the transmitting node, and the m is preset value.

7th kind of possible implementation with reference to first aspect, in the 8th kind of possible implementation of first aspect, institute Receiving module is stated, the sending module is also used at the n+N-1+m moment and transmits and receives incorrect response to the transmitting node After confirmation message, the transmitting node described in n+Rt reception retransmit N number of coding after data, the t be mixing Retransmission round trip time delay, R >=1.

Any possible implementation into the 8th kind of possible implementation of first aspect with reference to first aspect, On the one hand in the 9th kind of possible implementation, the sending module is also used to measure channel in the measurement module, After obtaining the code book group of the channel, Xiang Suoshu transmitting node sends the CQI based on the code book group, and the CQI is to be based on The average CQI that N number of code book in the code book group is calculated either is based on any code book in the code book group and is calculated Single CQI.

Second aspect provides a kind of transmitting node, comprising:

Receiving module includes N number of code book, N in the code book group for receiving the information for the code book group that receiving node is sent ≥1；

Processing module, for using N number of code book in the code book group to carry out at precoding to sent data respectively Reason, the data after generating N number of coding.

In conjunction with second aspect, in second aspect in the first possible implementation, the processing module is also used to institute It states M code book in the codebook space of transmitting node and generates the codebook space being made of at least two code book groups, the code book group Each code book group in space is made of N number of code book.

The first possible implementation in conjunction with second aspect, in second of second aspect possible implementation, institute A part of code book stated in code book group space at least two code book groups is identical.

In conjunction with second aspect the first or second of possible implementation, the third possible realization side in second aspect In formula, the receiving module, specifically for receiving the code book group of the receiving node transmission in code book group space Call number.

In conjunction with any possible implementation in the third possible implementation of second aspect to second aspect, In two the 4th kind of possible implementations of aspect, the transmitting node, further includes: sending module, in the receiving module Receive the code book group that receiving node is sent information before, Xiang Suoshu receiving node sends high-level signaling or the dedicated letter of physical layer It enables, includes the N in the high-level signaling or the physical layer dedicated signaling, the high-level signaling includes RRC signaling or MAC layer Signaling, the N are that the transmitting node is preset.

In conjunction with any possible implementation in the third possible implementation of second aspect to second aspect, In two the 5th kind of possible implementations of aspect, the receiving module is also used to receiving the code book group of receiving node transmission Before information, the N that the receiving node is sent is received, the N is to obtain after the receiving node measures channel 's.

In conjunction with any possible implementation in the 5th kind of possible implementation of second aspect to second aspect, In two the 6th kind of possible implementations of aspect, the sending module is also used to use the code book group in the processing module In N number of code book carry out precoding processing to sent data respectively, after the data after generating N number of coding, opened from moment n Begin, the data after successively sending N number of coding to the receiving node at the time of N number of continuous.

In conjunction with the 6th kind of possible implementation of second aspect, in the 7th kind of possible implementation of second aspect, institute Receiving module is stated, is also used in the sending module since moment n, successively to the receiving node at the time of N number of continuous After data after sending N number of coding, the correct response that the receiving node described in n+N-1+m reception is sent confirms Message, or the incorrect response confirmation message that the receiving node described in n+N-1+m reception is sent, the m is default Value.

In conjunction with the 7th kind of possible implementation of second aspect, in the 8th kind of possible implementation of second aspect, institute Sending module is stated, the incorrect response of receiving module receiving node described in n+N-1+m reception transmission is also used to After confirmation message, data after the n+Rt moment retransmits from N number of coding to the receiving node, the t is that mixing retransmits Round-trip delay, R >=1.

In conjunction with any possible implementation in the 8th kind of possible implementation of second aspect to second aspect, In two the 9th kind of possible implementations of aspect, the receiving module is also used to receiving the code book group of receiving node transmission After information, the CQI based on the code book group that the receiving node is sent is received, the CQI is based in the code book group The average CQI that is calculated of N number of code book or the single CQI that is calculated based on any code book in the code book group.

The third aspect provides a kind of channel measuring method, comprising:

Receiving node obtains the quantity N of code book in code book group to be measured, N >=1；

The receiving node measures channel, obtains the code book group of the channel, and the code book group includes N number of code This；

The receiving node reports the information of the code book group to transmitting node.

In conjunction with the third aspect, in the third aspect in the first possible implementation, the receiving node obtains to be measured Code book group in code book quantity N after, further includes:

The receiving node generates M code book in the codebook space of the receiving node by least two code book group groups At code book group space, each code book group in code book group space is made of N number of code book.

The first possible implementation in conjunction with the third aspect, in second of the third aspect possible implementation, institute A part of code book stated in code book group space at least two code book groups is identical.

In conjunction with the third aspect the first or second of possible implementation, the third possible realization side in the third aspect In formula, the receiving node reports the information of the code book group to transmitting node, comprising:

The receiving node reports call number of the code book group in code book group space to the transmitting node.

In conjunction with any possible implementation in the third possible implementation of the third aspect to the third aspect, In three the 4th kind of possible implementations of aspect, the receiving node obtains code book in code book group corresponding with the receiving node Quantity N, comprising:

The receiving node receives the high-level signaling or physical layer dedicated signaling that the transmitting node is sent, the high-rise letter It include the N in order or the physical layer dedicated signaling, the high-level signaling includes that radio resource control RRC signaling or medium are visited Ask control MAC layer signaling；

The receiving node obtains the N from the high-level signaling or the physical layer dedicated signaling.

In conjunction with any possible implementation in the 4th kind of possible implementation of the third aspect to first aspect, In three the 5th kind of possible implementations of aspect, the receiving node obtains code book in code book group corresponding with the receiving node Quantity N, comprising:

The receiving node is respectively using i code book as code book group Z_iChannel is measured, obtains M as a result, i=1, 2 ..., M, the M are the code book quantity in the codebook space of the receiving node；

The receiving node determines the best code book group Z of channel quality in the M result_i, by the code book group Z_iIn Quantity N of the number i of code book as code book in the code book group to be measured；

The method also includes:

The receiving node sends a notification message to the transmitting node, and the notification message includes the N.

In conjunction with any possible implementation in the 5th kind of possible implementation of the third aspect to the third aspect, In three the 6th kind of possible implementations of aspect, after the receiving node reports the information of the code book group to transmitting node, Further include:

Data of the receiving node since moment n, after receiving N number of coding that the transmitting node is sent；

The receiving node demodulates the data after N number of coding, obtains the data to be sent.

In conjunction with the 6th kind of possible implementation of the third aspect, in the 7th kind of possible implementation of the third aspect, institute Receiving node is stated since moment n, after the data after receiving N number of coding that the transmitting node is sent, further includes:

The receiving node sends correct response confirmation message to the transmitting node at the n+N-1+m moment, and the m is Preset value；

Or the receiving node sends incorrect response confirmation message to the transmitting node at the n+N-1+m moment.

In conjunction with the 7th kind of possible implementation of the third aspect, in the 8th kind of possible implementation of the third aspect, institute Receiving node is stated after the n+N-1+m moment transmits and receives incorrect response confirmation message to the transmitting node, further includes

Data after N number of coding that receiving node transmitting node described in n+Rt reception retransmits, the t To mix retransmission round trip time delay, R >=1.

In conjunction with any possible implementation in the 8th kind of possible implementation of the third aspect to the third aspect, In three the 9th kind of possible implementations of aspect, the receiving node measures channel, obtains the code book group of the channel Later, further includes:

The receiving node sends the channel quality indicator (CQI) based on the code book group, the CQI to the transmitting node It is by the average CQI that N number of code book in the code book group is calculated or based on any code book in the code book group Obtained single CQI.

Fourth aspect provides a kind of channel measuring method, comprising:

Transmitting node receives the information for the code book group that receiving node is sent, and includes N number of code book, N >=1 in the code book group；

The transmitting node is carried out at precoding to sent data respectively using N number of code book in the code book group Reason, the data after generating N number of coding.

In conjunction with fourth aspect, in fourth aspect in the first possible implementation, the method also includes:

The transmitting node generates M code book in the codebook space of the transmitting node by least two code book group groups At codebook space, each code book group in code book group space is made of N number of code book.

The first possible implementation in conjunction with fourth aspect, in second of fourth aspect possible implementation, institute A part of code book stated in code book group space at least two code book groups is identical.

In conjunction with fourth aspect the first or second of possible implementation, the third possible realization side in fourth aspect In formula, the transmitting node receives the information for the code book group that receiving node is sent, comprising:

The transmitting node receives index of the code book group of the receiving node transmission in code book group space Number.

In conjunction with any possible implementation in the third possible implementation of fourth aspect to fourth aspect, In four the 4th kind of possible implementations of aspect, before transmitting node receives the information for the code book group that receiving node is sent, also wrap It includes:

The transmitting node sends high-level signaling or physical layer dedicated signaling to the receiving node, the high-level signaling or It include the N in the physical layer dedicated signaling, the high-level signaling includes radio resource control RRC signaling or medium access control MAC layer signaling processed, so that the receiving node obtains the N, institute from the high-level signaling or the physical layer dedicated signaling Stating N is that the transmitting node is preset.

In conjunction with any possible implementation in the third possible implementation of fourth aspect to fourth aspect, In four the 5th kind of possible implementations of aspect, before the transmitting node receives the information for the code book group that receiving node is sent, Further include:

The transmitting node receives the N that the receiving node is sent, and the N is that the receiving node carries out channel It is obtained after measurement.

In conjunction with any possible implementation in the 5th kind of possible implementation of fourth aspect to fourth aspect, In four the 6th kind of possible implementations of aspect, the transmitting node is using N number of code book in the code book group respectively to pending The data sent carry out precoding processing, after the data after generating N number of coding, further includes:

The transmitting node is successively sent to the receiving node described N number of since moment n at the time of N number of continuous Data after coding.

In conjunction with the 6th kind of possible implementation of fourth aspect, in the 7th kind of possible implementation of fourth aspect, institute Transmitting node is stated since moment n, the number after successively sending N number of coding to the receiving node at the time of N number of continuous According to later, further includes:

The correct response confirmation message that transmitting node receiving node described in n+N-1+m reception is sent, institute Stating m is preset value；

Or the incorrect response confirmation that transmitting node receiving node described in n+N-1+m reception is sent disappears Breath.

In conjunction with the 7th kind of possible implementation of fourth aspect, in the 8th kind of possible implementation of fourth aspect, institute After the incorrect response confirmation message for stating the transmission of transmitting node receiving node described in n+N-1+m reception, further includes:

Data of the transmitting node after the n+Rt moment retransmits N number of coding to the receiving node, the t is mixed Close retransmission round trip time delay, R >=1.

In conjunction with any possible implementation in the 8th kind of possible implementation of fourth aspect to fourth aspect, In four the 9th kind of possible implementations of aspect, after the transmitting node receives the information for the code book group that receiving node is sent, Further include:

The transmitting node receives the channel quality indicator (CQI) based on the code book group that the receiving node is sent, institute Stating CQI is that the average CQI being calculated based on N number of code book in the code book group is either based on any code in the code book group Originally the single CQI being calculated.

Channel measuring method and device provided in this embodiment, by obtaining the quantity N of code book in code book group, and to channel It measures to obtain the code book group including N number of code book, then feeds back the code book group to transmitting node, transmitting node is made to use the code N number of code book in this group is sent after carrying out precoding processing to sent data respectively, improve channel is measured and The precision of feedback.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with It obtains other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of receiving node embodiment one provided in an embodiment of the present invention；

Fig. 2 is the structural schematic diagram of receiving node embodiment two provided in an embodiment of the present invention；

Fig. 3 is data transmit-receive time diagram；

Fig. 4 is data transmit-receive and re-transmission time diagram；

Fig. 5 is the structural schematic diagram of transmitting node embodiment one provided in an embodiment of the present invention；

Fig. 6 is the structural schematic diagram of transmitting node embodiment two provided in an embodiment of the present invention；

Fig. 7 is the flow chart of channel measuring method embodiment one provided in an embodiment of the present invention；

Fig. 8 is the flow chart of channel measuring method embodiment two provided in an embodiment of the present invention；

Fig. 9 is the flow chart of channel measuring method embodiment three provided in an embodiment of the present invention；

Figure 10 is the flow chart of channel measuring method example IV provided in an embodiment of the present invention；

Figure 11 is the flow chart of channel measuring method embodiment five provided in an embodiment of the present invention；

Figure 12 is the flow chart of channel measuring method embodiment six provided in an embodiment of the present invention.

Specific embodiment

In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.

For high frequency wave beam, improving antenna gain necessarily causes wave beam to narrow, and in multi-antenna systems, can use Mutiple antennas a period of time weights the method for one antenna port of synthesis virtually to improve antenna gain, is virtually added by M antenna element It weighs into an antenna port and is known as 1 drive M.The quantity of M more multi-beam is narrower, such as 1 16 wave beams of drive are 6.5 degree, and 1 32 wave beams of drive are 3.2 degree, 1 64 wave beams of drive are 1.6 degree.

If relatively narrow wave beam is applied to cellular communication, the accuracy of wave beam tracking needs very high.Such as with different small Under area's radius, in the building of cell edge in 1-8 layers for the pitch angle variation of user, as shown in table 1.

Table 1

From table 1 it follows that in minizone away under 500 meters of scene, in the building of cell edge, the use of contiguous floors Pitch angle differs only by 0.7 degree or so between family.If using relatively narrow wave beam again at this time, for example, 1.6 degree, then the wave beam of smaller angle Deviation may bring biggish antenna gain poor.

Therefore, it for relatively narrow wave beam, needs to carry out channel quality more accurately to measure and feed back, to improve signal The accuracy and precision of wave beam are corresponded to after weighting.

In view of channel coherency time and carrier frequency are inversely proportional, channel coherency time under high frequency compared to low frequency at Ratio reduces.And the time domain response variation of channel coherency time more short channel is faster, therefore under identical time domain granularity, feedback One code book group comprising multiple code books will more can accurately reflect the time domain situation of change of channel than only feeding back a code book.It is based on Above-mentioned reason, the embodiment of the present invention provide the method and apparatus of a kind of measurement and feedback, make a reservation for respectively in receiving end and transmitting terminal Justice is a set of using code book group as the codebook space of minimum particle size, includes N number of code book in code book group, receiving end is based on the measurement to channel It include the code book group of N number of code book to transmitting terminal feedback, transmitting terminal is in the transmission of next n times respectively with each code in code book group This is sent to receiving end after carrying out precoding weighting to identical data, and receiving end is based on the received data of n times and is demodulated, from And obtain data transmitted by transmitting terminal.Due to including N number of code book in code book group, when N is greater than 1, the code book of receiving end feedback Group can preferably react the situation of change of channel than one code book of feedback, and receiving end receives transmitting terminal according in code book group Multiple code books to identical data carry out precoding and send data after, letter can preferably be eliminated by demodulating the data obtained Road changes the influence to data.Code book quantity N in code book group is more, then the channel quality fed back is more accurate, when N is equal to 1, The measurement and feedback scheme of a code book are as only fed back at present.

Fig. 1 is the structural schematic diagram of receiving node embodiment one provided in an embodiment of the present invention, as shown in Figure 1, this implementation Example receiving node include:

Module 11 is obtained, for obtaining the quantity N of code book in code book group to be measured, N >=1.

Specifically, receiving node provided in this embodiment can be any with channel measurement and feedback function in network Network node, generally, which can be user equipment (User Equipment, UE).

Since in current channel channel measuring method, what receiving node measured channel and fed back every time is only one A code book, the transmitting node for receiving the feedback, which is re-send to according to the code book to sent data progress precoding processing, to be connect Receiving end.But with the introducing of high frequency, the wave beam that transmitting node is sent also accordingly narrows, to meet the needs of larger antenna gain, It thus needs to improve the precision of wave beam, that is, needs to improve the precision that receiving node measures channel and feeds back.It examines Consider frequency, channel coherency time and the corresponding relationship of time domain response, sent on the carrier frequency of lower frequency a data when Under the granularity of domain, multiple data can be sent on the carrier frequency of upper frequency, therefore, sending data using the carrier frequency of upper frequency When, receiving end can measure under the time domain granularity and feed back multiple code books, make transmitting node that multiple code books can be used more Identical data are sent when secondary transmission, so as to preferably match and cope with channel variation, are emitted to improve for data Wave beam precision.Receiving node will directly affect under high frequency the code book quantity in the code book group that channel measures and feeds back The precision of channel measurement and feedback.

Therefore, receiving node provided in this embodiment includes obtaining module 11, for obtaining code in code book group to be measured This quantity N, N >=1.The size of N can be receiving node and transmitting node predefined, then the size of N can be preset in In the system configuration of receiving node, the size that module 11 obtains N from preset system configuration is obtained；Or the size of N can be with It is preset in the system configuration of transmitting node, obtains the size that module 11 obtains N from the configuration signal that transmitting node is sent；Or The size of person N is obtained after being measured by acquisition module 11 to channel.

In current channel channel measuring method, receiving node only to channel measurement and can feed back fixed N=1 every time Code book.But in receiving node provided in this embodiment, the size of N can obtain the quantity that module 11 obtains N with dynamic configuration The as process of dynamic configuration N.When the quantity for obtaining the N that module 11 obtains is equal to 1, receiving node will be according to existing only right The scheme of one code book of channel measurement and feedback is measured and is fed back to channel.When the quantity for obtaining the N that module obtains is greater than 1 When, then the code book group of receiving node feedback will be better able to match and reflect the variation feelings of channel than only feeding back a code book Condition.

Measurement module 12 obtains the code book group of the channel, the code book group includes N number of for measuring to channel Code book.

Specifically, after acquisition module 11 gets the quantity N of code book in code book group, measurement module 12 carries out channel Measurement, to obtain the corresponding code book group of the channel, wherein include N number of code book in the code book group measured.

In a receiving node, the codebook space for preserving multiple code book compositions, if M code book is shared in codebook space, by M N number of in a code book is one group, and codebook space can be divided into P code book group altogether, and wherein the code book in every two code book group can be with It is mutually overlapping.Measurement module 12 selects one to measure obtained channel matter based on the measurement to channel in the P code book group Best code book group is measured, that is, is completed to the code book group selection after channel measurement.

Such as the number of code book M is 32 in codebook space, wherein it is 0,1,2 ..., 31 that 32 code books are numbered respectively.It obtains The quantity for the N that module 11 obtains is 4, it is assumed that 32 code books in codebook space have corresponded to 32 of even partition in the space [0,2 π] A wave beam.With every 4 adjacent code books for one group, then entire codebook space is divided into 32 code book groups, 32 code books Group corresponding code book number be respectively { 0,1,2,3 }, { 1,2,3,4 }, { 2,3,4,5 } ..., { 30,31,0,1 }, 31,0,1, 2}.The measuring reference signals that measurement module 12 can be sent based on transmitting node, respectively using 4 code books in 32 code book groups Channel quality is measured, the sum of channel quality measured with 4 code books in each code book group to channel is made For the corresponding channel quality of code book group, wherein the channel quality measured using each code book to channel quality is for example It can be channel quality instruction (Channel Quality Indicator, CQI).Or measurement module 12 is further with every The corresponding capacity of the CQI that a code book measures channel quality is as channel quality.In short, measurement module 12 is to channel After measurement, the code book group for being best able to match and reflect channel characteristics is selected in 32 code book groups.

Sending module 13, for reporting the information of the code book group to transmitting node.

Specifically, the information for the code book group that measurement module 12 measures is sent to transmitting node by sending module 13, i.e., complete At the measurement and feedback of channel.In transmitting node, the codebook space of multiple code book compositions is also preserved, and the code book is empty Between in each code book and code book number it is identical in receiving node, therefore sending module 13 is to the transmitting node transmission code book When group, it is only necessary to send the index or number of each code book group to transmitting node.

After transmitting node receives index or the number of the code book group that sending module 13 reports, that is, use this group of correspondence code In N number of code book precoding processing is carried out to identical data to be sent respectively, the data after generating N number of coding, and Data after sending N number of coding respectively in the transmission of next n times.Receiving node is measuring channel and feedback processing When, due to including multiple code books in receiving node measurement and each code book group fed back, and it is more in each code book group A code book is for making transmitting node carry out multiple precoding processing to identical data and sending, therefore reception provided by the embodiment The scheme of one code book group comprising multiple code books of node measurement and feedback can be matched preferably and reflect channel status, thus Improve the precision of transmitting node transmitting data.

Receiving node provided in this embodiment by obtaining the quantity N of code book in code book group, and measures channel To the code book group including N number of code book, the code book group then is fed back to transmitting node, transmitting node is made to use the N in the code book group A code book is sent after carrying out precoding processing to sent data respectively, improves the essence for measuring and feeding back to channel Degree.

Further, in the embodiment shown in fig. 1, module 11 is obtained, is also used to obtaining the code book group to be measured After the quantity N of middle code book, M code book in the codebook space of the receiving node is generated and is made of at least two code book groups Code book group space, each code book group in code book group space is made of N number of code book.

Specifically, in receiving node and transmitting node, it is all preset with identical codebook space, includes in the codebook space M code book.After acquisition module 11 obtains the code book quantity N in code book group to be measured, obtaining module 11 can be by code M code book in this space generates the code book group space as composed by multiple code book groups, includes wherein at least in code book group space Two code book groups, each code book group in codebook space group are made of N number of code book.In this way, when measurement module 12 carries out channel When measurement, that is, each code book group in code book group space can be used to measure respectively to channel, without again from codebook space Select N number of code book composition code book group.Simultaneously in transmitting node, also saved according to strategy generating identical with receiving node and reception Identical code book group space in point, such receiving node is in the information of the code book group arrived to transmitting node reporting measurement, it is only necessary to Call number or number of the code book group in code book group space are reported, that is, reduces resource needed for reporting code book group.

Further, in the embodiment shown in fig. 1, a part of code in code book group space at least two code book groups This is identical.That is, obtaining code book included in each code book group in the code book group space that module 11 generates is that can answer , the more code book groups of M code book generation in codebook space can be used in this way.

Further, in the embodiment shown in fig. 1, sending module 12, it is described specifically for being reported to the transmitting node Call number of the code book group in code book group space.

Further, in the embodiment shown in fig. 1, the method for obtaining the quantity N of code book in the acquisition code book group of module 11 can With are as follows: it obtains module 11 and obtains N from preset system configuration；Or it obtains module 11 and is obtained from the signaling that transmitting node is sent Take N；Or it obtains and N is obtained according to measurement result after module 11 measures channel.

In one implementation, it is all preset with the quantity N of code book in code book group in receiving node and transmitting node, obtains Module 11 obtains N from preset system configuration, then when sending module 13 reports the code book group including N number of code book to transmitting node Afterwards, transmitting node can equally know the quantity of N in code book group according to preset system configuration, thus from corresponding code book group Extract each code book.

In another implementation, it is only preset with the quantity N of code book in code book group in transmitting node, obtains module 11 Receive high-level signaling or physical layer dedicated signaling that the transmitting node is sent, the high-level signaling or the dedicated letter of the physical layer It include the N in order, the high-level signaling includes RRC signaling or MAC layer signaling；It is special from the high-level signaling or the physical layer With obtaining the N in signaling.Generally, transmitting node is the base station in network, and receiving node is the user equipment in network, And in store various network configuration informations in base station, base station send network configuration to user equipment as desired by signaling and believe Breath.The embodiment of the present invention is corresponded to, is preset with N in transmitting node, transmitting node is in the high-level signaling or physics for being sent to receiving node N is carried in layer signaling, receiving module 11 obtains N from high-level signaling or physical layer signaling.Here high-level signaling can be nothing Line resources control (Radio Resource Control, RRC) signaling or medium access control (Media Access Control, MAC) layer signaling.In this way, after sending module 23 reports the code book group including N number of code book to transmitting node, transmitting Node can know the quantity of N in code book group according to preset system configuration, to extract each code book from code book group.

In another implementation, in transmitting node and receiving node all in Non-precondition code book group code book quantity N, Then measurement module 12 are also used to respectively using i code book as code book group Z_iChannel is measured, obtains M as a result, i=1, 2 ..., M, the M are the code book quantity in the codebook space of the receiving node；Module 11 is obtained, is specifically used at the M As a result the best code book group Z of channel quality is determined in_i, by the code book group Z_iThe number i of middle code book is as the code to be measured The quantity N of code book in this group；Sending module 13 is also used to send a notification message to the transmitting node, the notification message packet Include the N.That is, the code book quantity N in code book group is dynamically to be worth, the acquisition module 11 in receiving node is according to measurement The case where module 12 measures channel determines the value of N, and then the value of N is sent to by sending module 13 by notification message Transmitting node.In this way, after sending module 13 reports the information of the code book group including N number of code book to transmitting node, transmitting node N number of code book in the code book group can be known according to preset system configuration.Since the quantity N of code book in code book group is to obtain Module 11 obtains the measurement that channel carries out according to measurement module 12, therefore the quantity of N is relevant with channel status, including The code book group of N number of code book also can preferably react the state of channel.For example, since N number of code book in code book group is for making Transmitting node sends identical data in n times transmission, and the accuracy of the more big then data of the value of N is higher.In addition, carrier frequency is got over Height, then time needed for sending n times data will be shorter, therefore measurement module 12 can measure channel carrier frequency frequency, So that it is determined that the value of N, such transmitting node can practice every conceivable frugality system resource under the premise of guaranteeing that data are accurate.

Receiving node measures N method particularly includes: measurement module 12 is respectively using i code book as code book group Z_iTo letter Road measures, and obtains M as a result, i=1,2 ..., M, the M are the code book quantity in the codebook space of the receiving node, The combination of all code book groups, respectively measures channel to each code book group i.e. in the traversal of measurement module 12 codebook space. Then module 11 is obtained, the best code book group Z of channel quality is determined in the M result_i, by the code book group Z_iMiddle code book Number i as code book in the code book group to be measured quantity N to get the code book into code book group quantity N.Then it sends Module 13 will also send a notification message to the transmitting node, and the notification message includes the N.

Fig. 2 is the structural schematic diagram of receiving node embodiment two provided in an embodiment of the present invention, as shown in Fig. 2, this implementation On the basis of the receiving node embodiment shown in Fig. 1 of example, further includes:

Receiving module 14, for after sending module 13 reports the information of the code book group to transmitting node, from moment n Start, the data after receiving N number of coding that the transmitting node is sent.

Specifically, after sending module 13 reports code book group to transmitting node, transmitting node will will use the N in code book group A code book carries out precoding processing to identical data to be sent, the data after obtaining N number of coding, and since moment n, Data after successively sending N number of coding to receiving node at the time of N number of continuous.Receiving module 14 in receiving node will from Moment, n started, the data after receiving N number of coding.

Demodulation module 15 obtains the data to be sent for demodulating the data after N number of coding.

Specifically, after data after receiving module 14 receives N number of coding, after demodulation module 15 can be to N number of coding Data demodulated.Since transmitting node is to carry out coding generation to data to be sent using the code book group comprising N number of code book N number of coding after data, and include that be receiving node be sent to transmitting node by sending module 13 for the code book group of N number of code book , therefore receiving node preserves the code book group, thus demodulation module 15 can according to the code book group to N number of coding after Data are demodulated, to obtain transmitting node data to be sent.

Since the data to be sent that transmitting node is sent are that the code book group including N number of code book has been used to carry out coded transmission , it is equivalent to and identical data is sent by different precoding weightings, i.e., simultaneously sent out data to multiple directions It send, so that receiving node receives and demodulates the data accuracy obtained and reliability is higher, and relatively narrow wave can be substantially reduced The data transmission error as brought by angular deviation of beam.

[] representing matrix or vector in present specification；{ } indicates set.

Below by taking 4 transmitting antennas as an example, a kind of specific code book group design method is provided, if codebook space B includes altogether 32 code book b₀、b₁、...、b₃₁, the quantity N of code book is 4 in each code book group.

X^(k)∈{[b_kmod32 b_(k+1)mod32 b_(k+2)mod32 b_(k+3)mod32]: k=0,1, K, 31 } (2)

C={ X⁽⁰⁾, X⁽¹⁾, X⁽²⁾, K, X⁽³¹⁾} (3)

Wherein,

M indicates the quantity of transmitting antenna, and n indicates the quantity of code book in codebook space, X^(k)Indicate the code of N number of code book composition This group, X^(k)Weighting matrix on corresponding transmitting terminal antenna, C are indicated by different X^(k)One code book group set of composition.It receives After node obtains the quantity of N, identical code book group X can be generated according to default rule^(k), by identical code book group X^(k)As One set, i.e. C, receiving node select an X in C after measuring to channel^(k)It is sent to as measurement result Penetrate node (can only send the X here^(k)Corresponding index or number).After obtaining N actually in transmitting node, The set C that code book group is generated according to the above method, after receiving node measures channel, it is only necessary to report C to transmitting node In X^(k)Serial number, i.e., reported corresponding code book group to transmitting node.Furthermore the code book in formula (1) is also possible to difference In the codebook structure of any one other forms of above-mentioned code book form.

The code book group that the code book group design method that formula (1) to formula (3) provides gives solid size this form specifically designs Method, but in practical applications, it can also be a kind of code book group of this form of dicode.

When the structure of the code book W in codebook space is this form of dicode, whereinMatrix X₁It is According to θ₁Determining, matrix X₂It is according to θ₂WithDetermining, θ₁Indicate adjacent two antennas in transmitting node first antenna group For the phase difference of same transport layer transmitting signal weighting value, θ₂Indicate adjacent two antennas in the second antenna sets of transmitting node Emit the phase difference of signal weighting value for same transport layer,Indicate that first antenna group and the second antenna sets are directed to same transmission The phase difference of layer transmitting signal weighting value, andM is positive integer, and M indicates that first antenna group and the second antenna sets are directed to The phase difference number of same transport layer transmitting signal weighting value, n are the nonnegative integer less than M, first antenna group and the second antenna Group belongs to the same multiaerial system.

Above-mentioned code book W is also referred to as W=W₁×W₂Form, wherein W₁It is properly termed as the first code book, W₁It is one corresponding With X₁(θ₁) it is relevant reflect channel it is long-term/broadband of mean change feature or long-term pre-coding matrix, W₂It is properly termed as Two code books, W₂Corresponding one withIt is relevant reflect channel it is short-term/the short-term precoding square of transient change feature Battle array.

B=[X⁽⁰⁾, X⁽¹⁾, X⁽²⁾, K, X⁽³¹⁾] (4)

V^(k)∈{[X^(2kmod32), X^{((2k+1)mod32)}, X^{((2k+2)mod32)}, X^{((2k+3)mod32)}]: k=0,1, K, 15 } (5)

If the structure of code book W is this form of dicode, can be by the W in W₁Codebook space be designed as one by multiple codes One codebook space of this group composition, by taking 8 transmitting antennas as an example, it is assumed that form one by 32 code book groups in formula (3) Code book group space B, it is corresponding that 32 code book groups in B further form the first antenna groups that 16 mutually overlap mutually according to formula (5) Code book group chunking.Each V^(k)It is made of 4 code book groups in formula (4).And each V^(k)According to formula (5) be extended to by First antenna group and the corresponding code book group of the second antenna setsIt is allThe code book group space of composition constitutes double codebook structures In the first code book codebook space.

In design W₂When, it is contemplated that the transmission number of plies provides different design methods for the different transmission numbers of plies, wherein Rank1 to Rank4 indicates the transmission number of plies 1 to the transmission number of plies 4.

Rank1:

Rank2:

Rank3:

Rank4:

Wherein Y or Y_p(p=1,2) is selection matrix, and e_iTo select column vector, e_iIn i-th of element be 1 other yuan Element is 0.e_iSelected is code book group set C in formula (7)₁In code book group.Such as when transmitting the number of plies is 1, i.e. Rank1 In the case where, when the value of Y is e₁When, indicate that it has selected code book group set C₁In first code book groupAgain for example when When the transmission number of plies is 2, i.e. in the case where Rank2, when the value of Y is (e₂, e₄) when, indicate that it has selected code book group set C₁In Second code book groupWith the 4th code book groupAnd C₂In extract selection matrix Y or Y_pAfter (p=1,2)AndSame biography is directed to Deng for first antenna group and the second antenna sets Spin matrix corresponding to the phase difference of defeated layer transmitting signal weighting value.

Receiving node selects C after measuring to channel₁In oneAnd C₂In a W₂Collectively as Measurement result is sent to transmitting node.It is also that code book group is generated according to the above method after obtaining N actually in transmitting node Set C₁And C₂, after receiving node measures channel, it is only necessary to report C to transmitting node₁InSerial number and C₂ The serial number of middle value has reported corresponding code book group to transmitting node.

Further, sending module 13 are also used to measure channel in measurement module 12, obtain of the channel Match and the code book group that is applicable in after, Xiang Suoshu transmitting node sends the CQI based on the code book group, and the CQI is based on described The list that the average CQI that N number of code book in code book group is calculated either is calculated based on any code book in the code book group A CQI.

Specifically, CQI is a measurement index of eless channel communication quality.CQI can represent a given channel Channel measurement.In general, the CQI of a high level indicates that a channel has preferable communication quality, vice versa.Due to measurement Module 12 is the code book group being made of N number of code book to what is obtained after channel measurement, multiple code book conducts in the code book group One entirety reflects channel quality jointly, therefore for the code book group, should only correspond to a CQI, rather than code book group In the corresponding CQI of each code book.Therefore sending module 13 to the CQI that transmitting node is sent be based on multiple in code book group The average CQI that the corresponding CQI of code book is calculated, or the single CQI being calculated based on any code book in code book group.

Further, sending module 14 are also used in receiving module 13 since moment n, receive the transmitting node hair After data after the N number of coding sent, correct response confirmation is sent to the transmitting node at the n+N-1+m moment and is disappeared Breath, or incorrect response confirmation message is sent to the transmitting node at the n+N-1+m moment.The m is preset value, optional Ground, the m can be set to the time for the data that the transmitting node receives and processes after completing n-th coding.The moment n is At the time of sending node sends first code book in code book group.

Specifically, after transmitting node receives the code book group of the transmission of sending module 13, receiving module 14 can be held from moment n Begin, the data after receiving N number of coding that the transmitting node is sent, receiving node should be fed back to transmitting node at this time is The no response message being properly received.If not using the channel measuring method of code book group, i.e., receiving node only feeds back a code every time This, then receiving node, can be to hair by some time after the data sent after receiving transmitting node according to code book coding It penetrates node and sends correct response confirmation (Acknowledgement, ACK) message or incorrect response confirmation (Negative Acknowledgement, NACK) message.If but what sending module 13 fed back to transmitting node is the code book for including N number of code book Group, since transmitting node encodes using N number of code book in code book group and send the same data, receiving node is not pair Data feedback ACK or NACK message after each coding that transmitting node is sent, but the number after receiving N number of coding According to, and by demodulation obtain data to be sent after, then to transmitting node feed back an ACK or NACK message.That is, connecing Node data to be sent corresponding for a code book group are received, an ACK or NACK message is only fed back.

Fig. 3 is data transmit-receive time diagram, and wherein timing 31 is using when this transmission of solid size when the downlink of transmitting node Sequence, timing 32 are the uplink timing using receiving node when this transmission of solid size, and timing 33 is that transmitting saves when being transmitted using code book group The downlink timing of point, timing 34 are the uplink timing of receiving node when being transmitted using code book group, to include 4 in code book group in Fig. 3 It is illustrated for a code book.In the downlink timing of transmitting node, transmitting node uses a Physical Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH) is being received to the data after one coding of receiving node transmission In the uplink timing of node, receiving node uses a Physical Uplink Control Channel (Physical Uplink Control Channel, PUCCH) to transmitting node feeding back ACK or nack message.If the primary transmitting of each PDSCH or PUCCH occupies one A moment.Receiving node needs demodulated equal processing that can just be confirmed whether to connect after receiving the data that transmitting node is sent It receives correct, it is therefore desirable to have certain time interval, this time interval is set in Fig. 3 according to the capacity variation of receiving node The time is 4 moment.

According to solid size this programme, at the moment 0, transmitting node is after PDSCH 301 sends a coding to receiving node Data, be spaced 4 moment, 4 receiving node of moment can PUCCH 302 to receiving node send ACK or NACK message.If Using the code book group scheme including 4 code books, since the moment 0, transmitting node successively PDSCH 303, PDSCH 304, PDSCH 305, PDSCH 306 send the data after encoding to receiving node, 4 moment are spaced, at moment 7 (7=0+4-1+4) Receiving node can send ACK or NACK message to transmitting node in PUCCH 307.Through summary it is found that receiving module 14 from when It carves n to start, after the data after receiving N number of coding that the transmitting node is sent, sending module 13 is at the n+N-1+m moment Correct response confirmation message is sent to the transmitting node, the m is that the transmitting node receives and processes completion n-th volume The time of data after code.

Further, receiving module 13 are also used to sending module 14 and connect at the n+N-1+m moment to transmitting node transmission Number after receiving incorrect response confirmation message, after N number of coding that the transmitting node described in n+Rt reception retransmits According to, the t is mixing retransmission round trip time delay, here R >=1, optionally,

Specifically, after receiving node handles the data received, if having sent ACK message to transmitting node, It as receives successfully；If having sent NACK message to transmitting node, then it represents that reception failure, if transmitting node has received NACK Message then needs to carry out the re-transmission of data.Using solid size sheet scheme in, transmitting node carry out data re-transmission time be from After sending data to receiving node, it is spaced a hybrid automatic repeat-request (Hybrid Automatic Repeat ReQuest) round-trip delay (Round Trip Time, RTT) then carries out data re-transmission.But using the code for including multi-code sheet When this group of scheme, due to the quantity N of code book in code book group be it is uncertain, in view of the more situation of code book quantity, hair Node is penetrated after receiving NACK message, carries out data re-transmission at the n+Rt moment, here R >=1, optionally,It indicatesIt rounds up, t is hybrid automatic repeat-request round-trip delay.

Fig. 4 is data transmit-receive and retransmits time diagram, and wherein timing 31 is to use transmitting node when this transmission of solid size Downlink timing, timing 32 are the uplink timing using receiving node when this transmission of solid size, and timing 33 is when being transmitted using code book group The downlink timing of transmitting node, timing 34 is the uplink timing of receiving node when being transmitted using code book group, in Fig. 4 in code book group Including being illustrated for 4 code books.On the basis of Fig. 3 carries out data transmit-receive, if HARQ RTT is 8 moment, according to Solid size this programme, 0 at the time of HARQ RTT1, number of the transmitting node after PDSCH 301 sends a coding to receiving node According to, be spaced 4 moment, at the time of HARQ RTT1 4 receiving nodes can PUCCH 302 to receiving node send ACK or NACK Message, if receiving node sends NACK message in PUCCH 302, transmitting node is 0 at the time of HARQ RTT2, in PDSCH 401 retransmit data to receiving node.According to the code book group scheme including 4 code books, 0 at the time of HARQ RTT1, hair Penetrate number of the node successively after PDSCH 303, PDSCH 304, PDSCH 305, PDSCH 306 send coding to receiving node According to, be spaced 4 moment, at the time of HARQ RTT1 7 receiving nodes can PUCCH 307 to transmitting node send ACK or NACK Message, if receiving node sends NACK message in PUCCH 307, transmitting node is 0 at the time of HARQ RTT3, successively Data are retransmitted to receiving node in PDSCH 402, PDSCH 403, PDSCH 404, PDSCH 405.

It should be noted that being obtained in code book group to be measured in receiving node shown in Fig. 1 and Fig. 2 if obtaining module 11 The mode of the quantity N of code book is to obtain N from preset system configuration；Or obtain N from the signaling that transmitting node is sent, then It obtains module 11 to connect with measurement module 12, measurement module 12 is connect with sending module 13.If acquisition module 11 obtains to be measured Code book group in code book quantity N mode be after measurement module 12 measures channel according to measurement result obtain N, then Obtaining module 11 can also directly connect with sending module 13.

It should be noted that in receiving node shown in Fig. 2, the connection of sending module 13, receiving module 14, demodulation module 15 Relationship is merely exemplary, and sending module 13, receiving module 14, demodulation module 15 can also be connected directly to one another or other Possible type of attachment.

Fig. 5 is the structural schematic diagram of transmitting node embodiment one provided in an embodiment of the present invention, as shown in figure 5, this implementation Example transmitting node include:

Receiving module 51 includes N number of code in the code book group for receiving the information for the code book group that receiving node is sent This, N >=1.

Specifically, transmitting node provided in this embodiment can be the centralized control node in network, generally, the transmitting Node can be base station, such as evolved node B (Evolved Node B, eNB).

Since in current channel channel measuring method, what receiving node measured channel and fed back every time is only one A code book, the transmitting node for receiving the feedback, which is re-send to according to the code book to sent data progress precoding processing, to be connect Receiving end.But with the introducing of high frequency, the wave beam that transmitting node is sent also accordingly narrows, to meet the needs of big antenna gain, this Sample just needs to improve the precision of wave beam, that is, needs to improve the precision that receiving node measures channel and feeds back.Consider To frequency, channel coherency time and the corresponding relationship of time domain response, the time domain of a data is sent on the carrier frequency of lower frequency Under granularity, multiple data can be sent on the carrier frequency of upper frequency, therefore, carrying out data biography using the carrier frequency of upper frequency When defeated, receiving end can measure under the time domain granularity and feed back multiple code books, make transmitting node that multiple code books can be used and exist Identical data are sent when repeatedly sending data, are changed so as to preferably cope with match channels, to improve transmission number According to the precision of corresponding wave beam.Receiving node measures channel and the quantity of code book fed back will directly affect channel measurement and The precision of feedback.

Therefore, transmitting node provided in this embodiment includes receiving module 51, for receiving the code book of receiving node transmission The information of group includes N number of code book in the code book group.Wherein, the N is what the transmitting node was sent to the receiving node Or the N receiving node channel is measured after obtain, N >=1.When N is equal to 1, receiving module 51 is received To code book group be only a code book, as long as N > 1, the received code book group of receiving module 51 will be than only feeding back a code book It is better able to the situation of change of reflection and match channels.

In a receiving node, the codebook space for preserving multiple code book compositions, if M code book is shared in codebook space, by M N number of in a code book is one group, codebook space is divided into P code book group altogether, the code book in two of them code book group can be mutual It is overlapping.Receiving node is selected an optimal code book group in P code book group, that is, is completed to letter based on the measurement to channel Optimal code book group selection after road measurement.In transmitting node, the codebook space of multiple code book group compositions is also preserved, and should Each code book group and code book group # in codebook space is identical with receiving node, therefore receiving module 51 only needs to receive section The number for each code book group that point is sent.

Processing module 52, for using N number of code book in the code book group to carry out precoding to sent data respectively Processing, the data after generating N number of coding.

Specifically, after the code book group that receiving module 51 receives that receiving node reports, processing module 52 uses code book N number of code book in group carries out precoding processing to an identical data to be sent respectively, the data after generating N number of coding, And the data after in the transmission of next n times sending N number of coding respectively, this completes based on N number of in the code book group The transmitting of n times data after codebook precoding.Due to including multiple code books in receiving node measurement and the code book group fed back, and Multiple code books in code book group are for making transmitting node carry out precoding processing to identical data and sending, therefore this implementation mentions The transmitting node of confession, by receive receiving node measurement and feedback code book group can preferably reflect with match channels state, To improve the precision of transmitting node transmitting data.

Transmitting node provided in this embodiment includes N in the code book group by receiving the code book group of receiving node transmission Then a code book carries out precoding processing to sent data respectively using N number of code book in the code book group, generates N number of Data after coding, to improve the precision for measuring and feeding back to channel.

Further, in the embodiment shown in fig. 6, processing module 52 are also used to the codebook space of the transmitting node In M code book generate the codebook space that is made of at least two code book groups, each code book group in code book group space is by N A code book composition.

Specifically, in receiving node and transmitting node, it is all preset with identical codebook space, includes in the codebook space M code book.When the code book group that receiving node is obtained to transmitting node reporting measurement, if reporting the content of entire code book group, need More transfer resource is occupied, therefore, receiving node can only report the feature that can characterize code book group to transmitting node Relevant information, such as the call number or coding etc. of code book group.But due in receiving node and sending node, only prestore including The codebook space of M code book, therefore, in transmitting node, processing module 52 is also used to generate M code book in codebook space The code book group space as composed by multiple code book groups wherein includes at least two code book groups, codebook space group in code book group space In each code book group be made of N number of code book.In this way, when receiving module 51 receives the information of the code book group of receiving node transmission After (such as call number or coding etc.), corresponding code book group can be found in code book group space.Simultaneously in a receiving node, According to identical code book group space in strategy generating identical with transmitting node and transmitting node.Receiving node is to transmitting in this way When the information for the code book group that node reporting measurement arrives, it is only necessary to report call number or number of the code book group in code book group space i.e. Can, that is, reduce resource needed for reporting code book group.

Further, in the embodiment shown in fig. 6, a part of code in code book group space at least two code book groups This is identical.That is, processing module 52 generate code book group space in each code book group included in code book be that can answer , the more code book groups of M code book generation in codebook space can be used in this way.

Further, in the embodiment shown in fig. 6, receiving module 51, specifically for receiving the receiving node transmission Call number of the code book group in code book group space.

Fig. 6 is the structural schematic diagram of transmitting node embodiment two provided in an embodiment of the present invention, as shown in fig. 6, this implementation On the basis of the receiving node embodiment shown in Fig. 5 of example, further includes:

Sending module 53, for receiving module 51 receive receiving node send code book group information before, Xiang Suoshu Receiving node sends high-level signaling or physical layer dedicated signaling, includes institute in the high-level signaling or the physical layer dedicated signaling N is stated, the high-level signaling includes RRC signaling or MAC layer signaling, and the N is that the transmitting node is preset.

Specifically, before receiving node sends code book group, need to obtain the quantity N of code book in code book group, wherein receiving section Point obtains there are many ways to N.In method provided in this embodiment, code book in code book group is only preset in transmitting node Quantity N, sending module 53 send high-level signaling or physical layer dedicated signaling, the high-level signaling or described to the receiving node It include the N in physical layer dedicated signaling, the high-level signaling includes RRC signaling or MAC layer signaling.When receiving node receives After high-level signaling or physical layer dedicated signaling that sending module 53 is sent, N can be obtained.

In addition, receiving node, there are also the method for other acquisition N, receiving node can match from the preset system of receiving node Set middle acquisition N；Or receiving node channel is measured after according to measurement result obtain N.If receiving node uses this side Method obtains N, then before the information for receiving the code book group that receiving node is sent, receiving module 51 also needs to receive receiving module 51 The N that receiving node is sent.

Further, receiving module 51 are also used to after the information for receiving the code book group that receiving node is sent, and receive institute The CQI based on the code book group of receiving node transmission is stated, the CQI is calculated based on N number of code book in the code book group To the average CQI either single CQI that is calculated based on any code book in the code book group.

Specifically, CQI is a measurement index of eless channel communication quality.CQI can represent a given channel Channel measurement.In general, the CQI of a high level indicates that a channel has preferable communication quality, vice versa.Due to connecing Receiving the received code book group of module 51 is the code book group being made of N number of code book, and multiple code books in the code book group are as one Whole common reflection channel quality, therefore for the code book group, a CQI should be only corresponded to, rather than in code book group The corresponding CQI of each code book.Therefore the received CQI of receiving module 51 is based on the corresponding CQI of multiple code books in code book group The average CQI being calculated, or the single CQI being calculated based on any code book in code book group.

Further, sending module 53, it is right respectively using N number of code book in the code book group in processing module 52 to be also used to Data to be sent carry out precoding processing, after the data after generating N number of coding, since moment n, when N number of continuous Carve the data after successively sending N number of coding to the receiving node.

Specifically, when processing module 52 carries out precoding processing to sent data using N number of code book in code book group, After data after generating N number of coding, sending module 53 is successively sent to receiving node at the time of N number of continuous since moment n Data after N number of coding.After data after receiving node receives N number of coding, the data after N number of coding can be solved It adjusts.Due to transmitting node be using the code book group comprising N number of code book to data to be sent carry out coding generation N number of coding after Data, and include the code book group of N number of code book be that receiving node is sent to transmitting node, therefore receiving node is to preserve the code This group, so that receiving node can demodulate the data after N number of coding according to the code book group, to obtain transmitting node Data to be sent.

Since the data to be sent that sending module 53 is sent have been passed after having used the code book group including N number of code book to be encoded It is defeated, it is equivalent to identical data is sent by different precoding weightings, obtained so that receiving node is received and demodulated Data accuracy and reliability are higher, and can substantially reduce the data transmission error compared with narrow beam.

Further, receiving module 51 are also used in sending module 53 since moment n, at the time of N number of continuous successively After sending the data after N number of coding to the receiving node, what the receiving node described in n+N-1+m reception was sent Correct response confirmation message, or the incorrect response confirmation that the receiving node described in n+N-1+m reception is sent disappear Breath, the m are preset value, and optionally, the m is that the transmitting node receives and processes the data after completing n-th coding Time.

Specifically, when sending module 53 is since moment n, successively to the receiving node transmission at the time of N number of continuous After data after N number of coding, receiving node the response message whether being properly received should be fed back to transmitting node at this time. If not using the channel measuring method of code book group, i.e., receiving node only feeds back a code book every time, then receiving node is receiving After the data that transmitting node is sent after encoding according to the code book, by some time, correct response can be sent to transmitting node Confirm (Acknowledgement, ACK) message or incorrect response confirmation (Negative Acknowledgement, NACK) message.But what if receiving node fed back to transmitting node is the code book group for including N number of code book, since sending module 53 makes The same data are encoded and sent with N number of code book in code book group, therefore receiving node is not that transmitting node is sent Data feedback ACK or NACK message after each coding, but the data after receiving N number of coding, and obtained by demodulation After data to be sent, then to transmitting node feed back an ACK or NACK message.That is, receiving node is for a code The corresponding data to be sent of this group only feed back an ACK or NACK message.Data transmit-receive time diagram according to Fig.4, It is found that receiving module 51, is the correct response confirmation message that the receiving node described in n+N-1+m reception is sent, or The incorrect response confirmation message that the receiving node described in n+N-1+m reception is sent.

Further, sending module 53 are also used to the transmission of the receiving node described in n+N-1+m reception of receiving module 51 Incorrect response confirmation message after, the data after the n+Rt moment retransmits N number of coding to the receiving node, institute Stating t is mixing retransmission round trip time delay, here R >=1, optionally,

Specifically, after sending module 53 has sent data to receiving node, if receiving module 51 receives ACK message, It as sends successfully；If receiving module 51 receives NACK message, that is, indicate to send failure, if receiving module 51 has received NACK message then needs to carry out the re-transmission of data.Using solid size sheet scheme in, sending module 53 carry out data re-transmission when Between for to receiving node send data after, be spaced a hybrid automatic repeat-request (Hybrid Automatic Repeat ReQuest) round-trip delay (Round Trip Time, RTT) then carries out data re-transmission.But using the code for including multi-code sheet When this group of scheme, due to the quantity N of code book in code book group be it is uncertain, in view of the more situation of code book quantity, connect Module 51 is received after receiving NACK message, sending module 53 carries out data re-transmission at the n+Rt moment, here R >=1, optionally,It indicatesIt rounds up, t is mixing retransmission round trip time delay.It is referred to data shown in fig. 5 Transmitting-receiving obtains the above results with time diagram is retransmitted.

Fig. 7 is the flow chart of channel measuring method embodiment one provided in an embodiment of the present invention, as shown in fig. 7, this implementation Example method include:

Step S701, receiving node obtain the quantity N of code book in code book group to be measured, N >=1.

Step S702, the receiving node measure channel, obtain the code book group of the channel, the code book group packet Include N number of code book.

Step S703, the receiving node report the information of the code book group to transmitting node.

Channel measuring method provided in this embodiment is used to complete the processing of receiving node shown in FIG. 1, realization principle Similar with technical effect, details are not described herein again.

Further, in embodiment illustrated in fig. 7, after step S701, further includes: the receiving node saves the reception The code book group space that is made of at least two code book groups of M code book generation in the codebook space of point, in code book group space Each code book group be made of N number of code book.

Further, a part of code book in embodiment illustrated in fig. 7, in code book group space at least two code book groups It is identical.

Further, in embodiment illustrated in fig. 7, step S703, comprising: the receiving node is reported to the transmitting node Call number of the code book group in code book group space.

Further, in embodiment illustrated in fig. 7, step S701, comprising: the receiving node receives the transmitting node hair It include the N in the high-level signaling or physical layer dedicated signaling sent, the high-level signaling or the physical layer dedicated signaling, it is described High-level signaling includes RRC signaling or MAC layer signaling；The receiving node is from the high-level signaling or the physical layer dedicated signaling It is middle to obtain the N.

Further, in embodiment illustrated in fig. 7, step S701, comprising: the receiving node is respectively using i code book as code This group of Z_iChannel is measured, obtains M as a result, i=1,2 ..., M, the M are in the codebook space of the receiving node Code book quantity；The receiving node determines the best code book group Z of channel quality in the M result_i, by the code book group Z_iQuantity N of the number i of middle code book as code book in the code book group to be measured.After step S701, further includes: described Receiving node sends a notification message to the transmitting node, and the notification message includes the N.

Fig. 8 is the flow chart of channel measuring method embodiment two provided in an embodiment of the present invention, as shown in figure 8, this implementation Example method include:

Step S801, receiving node obtain the quantity N of code book in code book group to be measured, N >=1.

Step S802, the receiving node measure channel, obtain the code book group of the channel, the code book group packet Include N number of code book.

Step S803, the receiving node report the information of the code book group to transmitting node.

Step S804, the receiving node is since moment n, after receiving N number of coding that the transmitting node is sent Data.

Step S805, the receiving node demodulate the data after N number of coding, obtain the number to be sent According to.

Fig. 9 is the flow chart of channel measuring method embodiment three provided in an embodiment of the present invention, as shown in figure 9, this implementation Example method include:

Step S901, receiving node obtain the quantity N of code book in code book group to be measured, N >=1.

Step S902, the receiving node measure channel, obtain the code book group of the channel, the code book group packet Include N number of code book.

Step S903, the receiving node report the information of the code book group to transmitting node.

Step S904, the receiving node is since moment n, after receiving N number of coding that the transmitting node is sent Data.

Step S905, the receiving node send correct response confirmation to the transmitting node at the n+N-1+m moment and disappear Breath, the m are preset value, and optionally, the m is that the transmitting node receives and processes the data after completing n-th coding Time.

Step S906, the receiving node demodulate the data after N number of coding, obtain the number to be sent According to.

Step S907, the receiving node send incorrect response confirmation to the transmitting node at the n+N-1+m moment Message.

Step S908, receiving node transmitting node described in n+Rt reception retransmit N number of coding after Data, the t are mixing retransmission round trip time delay, here R >=1, optionally,

Further, in Fig. 7 into embodiment illustrated in fig. 9, the receiving node measures channel, obtains the letter After the information of the code book group in road, further includes: the receiving node is sent to the transmitting node based on the code book group CQI, the CQI are the average CQI being calculated based on N number of code book in the code book group or are based in the code book group The single CQI that any code book is calculated.

Figure 10 is the flow chart of channel measuring method example IV provided in an embodiment of the present invention, as shown in Figure 10, this reality The method for applying example includes:

Step S1001, transmitting node receive the information for the code book group that receiving node is sent, N >=1.

Step S1002, the transmitting node are carried out to sent data respectively using N number of code book in the code book group Precoding processing, the data after generating N number of coding.

Channel measuring method provided in this embodiment is used to complete the processing of transmitting node shown in fig. 5, realization principle Similar with technical effect, details are not described herein again.

Further, in embodiment illustrated in fig. 10, further includes: the transmitting node is by the codebook space of the transmitting node In M code book generate the codebook space that is made of at least two code book groups, each code book group in code book group space is by N A code book composition.

Further, a part of code in embodiment illustrated in fig. 10, in code book group space at least two code book groups This is identical.

Further, in embodiment illustrated in fig. 10, step S1001, comprising: the transmitting node receives the receiving node Call number of the code book group sent in code book group space.

Further, in embodiment illustrated in fig. 10, before step S1001, further includes: the transmitting node is to the reception Node sends high-level signaling or physical layer dedicated signaling, includes the N in the high-level signaling or the physical layer dedicated signaling, The high-level signaling includes RRC signaling or MAC layer signaling, so that the receiving node is from the high-level signaling or the physical layer The N is obtained in dedicated signaling.

Further, in embodiment illustrated in fig. 10, before step S1001, comprising: further include: the transmitting node receives The N that the receiving node is sent, the N receiving node obtain after measuring to channel.

Figure 11 is the flow chart of channel measuring method embodiment five provided in an embodiment of the present invention, as shown in figure 11, this reality The method for applying example includes:

Step S1101, transmitting node receive the information for the code book group that receiving node is sent, N >=1.

Step S1102, the transmitting node are carried out to sent data respectively using N number of code book in the code book group Precoding processing, the data after generating N number of coding.

Step S1103, the transmitting node are successively sent out to the receiving node at the time of N number of continuous since moment n Data after sending N number of coding.

Figure 12 is the flow chart of channel measuring method embodiment six provided in an embodiment of the present invention, as shown in figure 12, this reality The method for applying example includes:

Step S1201, transmitting node receive the information for the code book group that receiving node is sent, N >=1.

Step S1202, the transmitting node are carried out to sent data respectively using N number of code book in the code book group Precoding processing, the data after generating N number of coding.

Step S1203, the transmitting node are successively sent out to the receiving node at the time of N number of continuous since moment n Data after sending N number of coding.

Step S1204, the correct response that transmitting node receiving node described in n+N-1+m reception is sent are true Recognize message, the m is preset value, and optionally, the m is that the transmitting node receives and processes the number after completing n-th coding According to time.

Step S1205, the incorrect response that transmitting node receiving node described in n+N-1+m reception is sent Confirmation message.

Step S1206, number of the transmitting node after the n+Rt moment retransmits N number of coding to the receiving node According to, the t is mixing retransmission round trip time delay, here R >=1, optionally,

Further, in Figure 10 into embodiment illustrated in fig. 12, the transmitting node receives the code book that receiving node is sent After group, further includes:

The transmitting node receives the CQI based on the code book group that the receiving node is sent, and the CQI is based on institute State what the average CQI that N number of code book in code book group is calculated either was calculated based on any code book in the code book group Single CQI.

Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or The various media that can store program code such as person's CD.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into Row equivalent replacement.Therefore, protection scope of the present invention should be subject to the protection scope in claims.

Claims (36)

1. a kind of receiving node characterized by comprising

Module is obtained, for obtaining the quantity N of code book in code book group to be measured, N >=1；

Measurement module obtains the code book group of the channel, the code book group includes N number of code book for measuring to channel；

Sending module, for reporting the information of the code book group to transmitting node；

The acquisition module is also used to save the reception in obtaining the code book group to be measured after the quantity N of code book The code book group space that is made of at least two code book groups of M code book generation in the codebook space of point, in code book group space Each code book group be made of N number of code book.

2. receiving node according to claim 1, which is characterized in that in code book group space at least two code book groups A part of code book it is identical.

3. receiving node according to claim 1 or 2, which is characterized in that the sending module is specifically used for the hair It penetrates node and reports call number of the code book group in code book group space.

4. receiving node according to claim 1 or 2, which is characterized in that the acquisition module is specifically used for described in reception The high-level signaling or physical layer dedicated signaling that transmitting node is sent include in the high-level signaling or the physical layer dedicated signaling The N, the high-level signaling include radio resource control RRC signaling or medium access control MAC layer signaling；From the high-rise letter The N is obtained in order or the physical layer dedicated signaling.

5. receiving node according to claim 1 or 2, which is characterized in that the measurement module is also used to respectively with i Code book is code book group Z_iChannel is measured, obtains M as a result, i=1,2 ..., M, the M are the code of the receiving node Code book quantity in this space；

The acquisition module, specifically for determining the best code book group Z of channel quality in the M result_i, by the code book Group Z_iQuantity N of the number i of middle code book as code book in the code book group to be measured；

The sending module is also used to send a notification message to the transmitting node, and the notification message includes the N.

6. receiving node according to claim 1 or 2, which is characterized in that further include:

Receiving module, for being opened from moment n after the sending module reports the information of the code book group to transmitting node Begin, the data after receiving N number of coding that the transmitting node is sent；

Demodulation module obtains data to be sent for demodulating the data after N number of coding.

7. receiving node according to claim 6, which is characterized in that the sending module is also used in the reception mould Block is since moment n, after the data after receiving N number of coding that the transmitting node is sent, at the n+N-1+m moment to institute It states transmitting node and sends correct response confirmation message, or is incorrect to transmitting node transmission at the n+N-1+m moment Response confirmation message, the m are preset value.

8. receiving node according to claim 7, which is characterized in that the receiving module is also used to the sending module After the n+N-1+m moment transmits and receives incorrect response confirmation message to the transmitting node, in n+Rt reception institute Data after stating N number of coding of transmitting node re-transmission, the t are mixing retransmission round trip time delay, R >=1.

9. according to claim 1~2, receiving node described in any one of 7~8, which is characterized in that the sending module, also For measuring in the measurement module to channel, after obtaining the code book group of the channel, Xiang Suoshu transmitting node is sent Based on the channel quality indicator (CQI) of the code book group, the CQI is calculated based on N number of code book in the code book group The single CQI that average CQI is either calculated based on any code book in the code book group.

10. a kind of transmitting node characterized by comprising

Receiving module includes N number of code book, N >=1 in the code book group for receiving the information for the code book group that receiving node is sent；

Processing module, it is raw for using N number of code book in the code book group to carry out precoding processing to sent data respectively At the data after N number of coding；

The processing module is also used to generate M code book in the codebook space of the transmitting node by least two code books The codebook space of group composition, each code book group in code book group space are made of N number of code book.

11. transmitting node according to claim 10, which is characterized in that at least two code book groups in code book group space In a part of code book it is identical.

12. transmitting node described in 0 or 11 according to claim 1, which is characterized in that the receiving module is specifically used for receiving Call number of the code book group that the receiving node is sent in code book group space.

13. transmitting node described in 0 or 11 according to claim 1, which is characterized in that further include: sending module, for described Before receiving module receives the information for the code book group that receiving node is sent, Xiang Suoshu receiving node sends high-level signaling or physical layer It include the N in dedicated signaling, the high-level signaling or the physical layer dedicated signaling, the high-level signaling includes radio resource RRC signaling or medium access control MAC layer signaling are controlled, the N is that the transmitting node is preset.

14. transmitting node described in 0 or 11 according to claim 1, which is characterized in that the receiving module is also used to receiving Before the information for the code book group that receiving node is sent, the N that the receiving node is sent is received, the N is reception section What point obtained after measuring to channel.

15. transmitting node described in 0 or 11 according to claim 1, which is characterized in that the sending module is also used to described Processing module carries out precoding processing to sent data respectively using N number of code book in the code book group, generates N number of coding After data afterwards, since moment n, after successively sending N number of coding to the receiving node at the time of N number of continuous Data.

16. transmitting node according to claim 15, which is characterized in that the receiving module is also used in the transmission Module is since moment n, after successively sending the data after N number of coding to the receiving node at the time of N number of continuous, The correct response confirmation message that the receiving node described in n+N-1+m reception is sent, or in n+N-1+m reception institute The incorrect response confirmation message of receiving node transmission is stated, the m is preset value.

17. transmitting node according to claim 16, which is characterized in that the sending module is also used to the reception mould After the incorrect response confirmation message that block receiving node described in n+N-1+m reception is sent, at the n+Rt moment to institute It states receiving node and retransmits the data after N number of coding, the t is mixing retransmission round trip time delay, R >=1.

18. transmitting node described in any one of 0~11,16~17 according to claim 1, which is characterized in that the reception mould Block is also used to after the information for receiving the code book group that receiving node is sent, receive that the receiving node sends based on described The channel quality indicator (CQI) of code book group, the CQI be the average CQI being calculated based on N number of code book in the code book group or Person is based on the single CQI that any code book is calculated in the code book group.

19. a kind of channel measuring method characterized by comprising

Receiving node obtains the quantity N of code book in code book group to be measured, N >=1；

The receiving node measures channel, obtains the code book group of the channel, and the code book group includes N number of code book；

The receiving node reports the information of the code book group to transmitting node；

The receiving node obtains in code book group to be measured after the quantity N of code book, further includes:

The receiving node is made of the M code book generation in the codebook space of the receiving node at least two code book groups Code book group space, each code book group in code book group space are made of N number of code book.

20. according to the method for claim 19, which is characterized in that in code book group space at least two code book groups A part of code book is identical.

21. method described in 9 or 20 according to claim 1, which is characterized in that the receiving node reports described to transmitting node The information of code book group, comprising:

The receiving node reports call number of the code book group in code book group space to the transmitting node.

22. method described in 9 or 20 according to claim 1, which is characterized in that the receiving node obtains and the receiving node The quantity N of code book in corresponding code book group, comprising:

The receiving node receives the high-level signaling or physical layer dedicated signaling that the transmitting node is sent, the high-level signaling or It include the N in the physical layer dedicated signaling, the high-level signaling includes radio resource control RRC signaling or medium access control MAC layer signaling processed；

The receiving node obtains the N from the high-level signaling or the physical layer dedicated signaling.

23. method described in 9 or 20 according to claim 1, which is characterized in that the receiving node obtains and the receiving node The quantity N of code book in corresponding code book group, comprising:

The receiving node is respectively using i code book as code book group Z_iChannel is measured, obtains M as a result, i=1,2 ..., M, The M is the code book quantity in the codebook space of the receiving node；

The receiving node determines the best code book group Z of channel quality in the M result_i, by the code book group Z_iMiddle code book Quantity N of the number i as code book in the code book group to be measured；

The method also includes:

The receiving node sends a notification message to the transmitting node, and the notification message includes the N.

24. method described in 9 or 20 according to claim 1, which is characterized in that the receiving node reports described to transmitting node After the information of code book group, further includes:

Data of the receiving node since moment n, after receiving N number of coding that the transmitting node is sent；

The receiving node demodulates the data after N number of coding, obtains data to be sent.

25. according to the method for claim 24, which is characterized in that the receiving node receives the hair since moment n After data after penetrating N number of coding of node transmission, further includes:

The receiving node sends correct response confirmation message to the transmitting node at the n+N-1+m moment, and the m is default Value；

Or the receiving node sends incorrect response confirmation message to the transmitting node at the n+N-1+m moment.

26. according to the method for claim 25, which is characterized in that the receiving node is at the n+N-1+m moment to the hair It penetrates after the incorrect response confirmation message of node transmitting and receiving, further includes

Data after N number of coding that receiving node transmitting node described in n+Rt reception retransmits, the t is mixed Close retransmission round trip time delay, R >=1.

27. method described in any one of 9~20,25~26 according to claim 1, which is characterized in that the receiving node pair Channel measures, after obtaining the code book group of the channel, further includes:

The receiving node sends the channel quality indicator (CQI) based on the code book group to the transmitting node, and the CQI is base The average CQI that N number of code book in the code book group is calculated either is based on any code book in the code book group and calculates The single CQI arrived.

28. a kind of channel measuring method characterized by comprising

Transmitting node receives the information for the code book group that receiving node is sent, and includes N number of code book, N >=1 in the code book group；

The transmitting node carries out precoding processing to sent data respectively using N number of code book in the code book group, raw At the data after N number of coding；

The method also includes:

The transmitting node is made of the M code book generation in the codebook space of the transmitting node at least two code book groups Codebook space, each code book group in code book group space are made of N number of code book.

29. according to the method for claim 28, which is characterized in that in code book group space at least two code book groups A part of code book is identical.

30. the method according to claim 28 or 29, which is characterized in that the transmitting node receives what receiving node was sent The information of code book group, comprising:

The transmitting node receives call number of the code book group of the receiving node transmission in code book group space.

31. the method according to claim 28 or 29, which is characterized in that transmitting node receives the code book that receiving node is sent Before the information of group, further includes:

The transmitting node sends high-level signaling or physical layer dedicated signaling, the high-level signaling or described to the receiving node It include the N in physical layer dedicated signaling, the high-level signaling includes radio resource control RRC signaling or medium access control MAC layer signaling, so that the receiving node obtains the N, the N from the high-level signaling or the physical layer dedicated signaling It is preset for the transmitting node.

32. the method according to claim 28 or 29, which is characterized in that the transmitting node receives what receiving node was sent Before the information of code book group, further includes:

The transmitting node receives the N that the receiving node is sent, and the N is that the receiving node measures channel It obtains afterwards.

33. the method according to claim 28 or 29, which is characterized in that the transmitting node uses in the code book group N number of code book is respectively to sent data progress precoding processing, after the data after generating N number of coding, further includes:

The transmitting node successively sends N number of coding to the receiving node at the time of N number of continuous since moment n Data afterwards.

34. according to the method for claim 33, which is characterized in that the transmitting node is since moment n, N number of continuous At the time of successively send the data after N number of coding to the receiving node after, further includes:

The correct response confirmation message that transmitting node receiving node described in n+N-1+m reception is sent, the m are Preset value；

Or the incorrect response confirmation message that transmitting node receiving node described in n+N-1+m reception is sent.

35. according to the method for claim 34, which is characterized in that the transmitting node is described in the n+N-1+m reception After the incorrect response confirmation message that receiving node is sent, further includes:

Data of the transmitting node after the n+Rt moment retransmits N number of coding to the receiving node, the t are mixing weight Pass round-trip delay, R >=1.

36. the method according to any one of claim 28~29,34~35, which is characterized in that the transmitting node connects After the information for receiving the code book group that receiving node is sent, further includes:

The transmitting node receives the channel quality indicator (CQI) based on the code book group that the receiving node is sent, the CQI It is by the average CQI that N number of code book in the code book group is calculated or based on any code book in the code book group Obtained single CQI.