CN101594219B - Mixed automatic repeat request method and mixed automatic repeat request system for multi-input and multi-output system - Google Patents

Abstract

The invention discloses a mixed automatic repeat request method and a mixed automatic repeat request system for a multi-input and multi-output system, wherein the method comprises that: in data transmission, a sending end selects a mapping mode from a plurality of preset mapping modes; a data stream to be sent is mapped to one part and the whole of a plurality of transmitting antennas and sent to a receiving end, wherein the mapping modes comprise a partial mapping mode and a total mapping mode; under the condition of failed transmission, data retransmission is carried out, the sending end reselects a mapping mode from the plurality of the mapping modes; the data stream is mapped to one part or the whole of the plurality of the transmitting antennas; and the data stream is retransmitted to the receiving end. Through the change of the mapping relation between the retransmitted data and the antennas, the method and the system can improve the transmission reliability of HARQ technology, reduce bit error rate and improve the efficiency of data transmission.

Description

The mixed automatic retransmission request method and the system that are used for multi-input multi-output system

Technical field

The invention belongs to wireless communication field, refer more particularly to a kind of for multiple-input and multiple-output (Multiple-Input Multiple-Output, referred to as MIMO) mixed automatic retransfer request (Hybrid Automatic Repeat Request is referred to as HARQ) method and system in the system.

Background technology

Many new technologies have appearred in wireless communication field, for example, Orthodoxy Frequency Division Multiplex (Orthogonal Frequency Division Multiplexing, referred to as OFDM) and MIMO, these technology can improve the performance of communication system significantly, thereby satisfy the ever-increasing data traffic requirement of people.The MIMO technology is the important breakthrough on the wireless communication field multi-antenna technology.The MIMO technology can improve power system capacity in the situation that does not increase frequency spectrum resource, thereby can carry out dilatation in the situation that does not increase carrier frequency and base station.Improve the quality that receives signal thereby utilize the MIMO technology can also obtain various diversity gains, reduce the error rate, thereby improve the stability of communication system.Therefore, the MIMO technology is having very important effect aspect the raising communication system performance.

The HARQ technology combines autonomous retransmission technology and forward error correction coding technology and detects mistake and correct.Three kinds of HARQ patterns are arranged at present: the first kind is that receiving terminal abandons the grouping that can't correctly receive, and retransmits the copy of primary signal by feedback channel notice transmitting terminal; Equations of The Second Kind is that receiving terminal is preserved the grouping that can't correctly receive, and finishes decoding by merging with retransmission packet; The 3rd class is that receiving terminal is preserved the grouping that can't correctly receive, and by finishing decoding with retransmitting a minute merging, this type of retransmission information comprises the full detail that can be correctly decoded.

It is as follows to use HARQ to carry out the process of error correction: transmitting terminal at first with the Packet Generation behind the modulating-coding to receiving terminal, receiving terminal carries out error correction decoding to the information of receiving, if can correctly finish decoding, then to the correct sign (ACK) that receives of transmitting terminal feedback, if can not correctly decode, then feedback error receives sign (NACK), by this information requirements transmitting terminal data retransmission.

The HARQ structure of tradition in the mimo system be as shown in Figure 1:

At transmitting terminal, the individual data flow of s waiting for transmission (s 〉=0) is at first carried out CRC coding and coded modulation by CRC encoder and the modulating-coding unit of redundant cyclic check (CRC) encoder 101, then (the individual data flow waiting for transmission of L≤M) finally is mapped to L data flow on the individual transmitting antenna 103 of M (M 〉=2) at last and sends to process formation L by the MIMO coding of MIMO coding and pretreatment unit 102.

At receiving terminal, signal on the reception antenna 104 at first carries out channel estimating by channel estimating unit 105, obtain MIMO transmission channel matrix H, then signal is detected the inverse mapping that data flow inverse mapping unit 106 carries out MIMO detection and data flow by MIMO, and then the signal that obtains by the 107 pairs of detections in CRC unit that are positioned at receiving terminal carries out CRC check, thereby feedback information processing unit 108 generates feedback information by judging whether to be correctly decoded, and feeds back to receiving terminal by feedback channel 109 at last.If receiving terminal does not correctly receive signal (CRC detects and makes mistakes), then transmitting terminal is after receiving feedback information NACK, the mode of primary signal according to first transmission retransferred once, wherein the mapping relations between data flow and the antenna remain unchanged always, until receiving terminal receive data correctly.

Can find out, in present method, the primary signal that retransmits is each time all passed through identical antenna and identical transmission, so so that the symbol of error code appears and can't be at stronger transmission, yet the correct symbol that receives but occupies outstanding channel always, thereby has lost the space diversity gain when retransmitting.

Summary of the invention

Propose the present invention in order to address the above problem, main purpose of the present invention is to provide a kind of mixed automatic retransmission request mechanism for multi-input multi-output system, to solve the recurrent problem of wrong re-transmission in the correlation technique.

According to an aspect of the present invention, provide a kind of mixed automatic retransmission request method for multi-input multi-output system.

Mixed automatic retransmission request method for multi-input multi-output system according to the present invention comprises: when carrying out transfer of data, transmitting terminal is selected a kind of mapping mode from the multiple mapping mode that sets in advance, data flow to be sent is mapped to the part or all of of a plurality of transmitting antennas, and data flow is sent to receiving terminal, wherein, mapping mode comprises: part mapping mode, Complete Mappings mode; When carrying out data re-transmission in the situation of bust this, transmitting terminal reselects a kind of mapping mode from multiple mapping mode, and data flow is mapped to the part or all of of a plurality of transmitting antennas, and retransmits data flow to receiving terminal.

Wherein, the processing of selecting or reselect a kind of mapping mode from the multiple mapping mode that sets in advance is specially:

From multiplying each other corresponding to predetermined matrices of selection and pre-coding matrix the predetermined matrices of every kind of mapping mode of setting in advance, and the new precoding square that obtains that will multiply each other is used for follow-up mapping, wherein, the predetermined matrices corresponding to every kind of mapping mode all is stored in the set of matrices.

And, be less than or equal in the quantity of data flow in the situation of quantity of a plurality of transmitting antennas, the part or all of processing that data flow is mapped to a plurality of transmitting antennas is specially: predetermined matrices and pre-coding matrix that transmitting terminal will be selected from set of matrices multiply each other, and the new pre-coding matrix that obtains of will multiplying each other is used for whole antennas or part antenna mapping data flow at a plurality of transmitting antennas.

Particularly, set of matrices comprises Complete Mappings set of matrices and part mapping set of matrices, and wherein, the Complete Mappings set of matrices is corresponding to Complete Mappings mode, part mapping set of matrices part mapping mode.

On the one hand, equal in the quantity of data flow in the situation of quantity of a plurality of transmitting antennas, the part or all of processing that data flow is mapped to a plurality of transmitting antennas is specially: predetermined matrices and pre-coding matrix that transmitting terminal will be selected from the Complete Mappings set of matrices multiply each other, and the new pre-coding matrix that obtains of will multiplying each other is used for the whole antenna mapping data flow at a plurality of transmitting antennas.

On the other hand, in the situation of quantity less than the quantity of a plurality of transmitting antennas of data flow, the part or all of processing that data flow is mapped to a plurality of transmitting antennas is specially: predetermined matrices and pre-coding matrix that transmitting terminal will be selected from the part mapping set of matrices multiply each other, and the new pre-coding matrix that obtains of will multiplying each other is used for the part antenna mapping data flow at a plurality of transmitting antennas.

Particularly, all matrixes in the Complete Mappings set of matrices all satisfy following condition:

Each Complete Mappings matrix has the capable and M row of M, and it is 1 that there is and only has an element in every delegation, and all the other elements are 0 entirely; Each is shown and only has an element is 1, and all the other elements are 0 entirely; Wherein, M is the transmitting terminal number of antennas, and M 〉=2.

All matrixes in the part mapping set of matrices all satisfy following condition:

Each part mapping matrix has M capable, the L row; It is 1 that every delegation only has at most an element, and all the other elements are zero entirely, perhaps are 0; Each is shown and only has an element is 1, and all the other elements are 0 entirely; Wherein, M is the transmitting terminal number of antennas, and M 〉=2, and L is the number of data streams of encoder output, and 0≤L≤M.

And, the multiplication rule of complex-field matrix is followed in the processing that predetermined matrices and pre-coding matrix are multiplied each other, and, the mode that multiplies each other is: P=DAW or for P=DWA, wherein, D and W are pre-coding matrix, and A is the predetermined matrices in the set of matrices, P is new pre-coding matrix, and transmitting terminal and the same mode that multiplies each other of receiving terminal employing.

In addition, be less than or equal in the quantity of data flow in the situation of quantity of a plurality of transmitting antennas, with data flow be mapped to a plurality of transmitting antennas part or all of processing can also for: transmitting terminal is selected a kind of mapping mode from the set of predefined mapping mode, according to selected mapping mode the data flow of precoder output is mapped to the some or all of of a plurality of transmitting antennas.

Particularly, equal in the quantity of data flow in the situation of quantity of a plurality of transmitting antennas, the processing that data flow is mapped to a plurality of transmitting antennas is specially: transmitting terminal is selected a kind of Complete Mappings mode from the set of predefined mapping mode, according to selected mapping mode the output stream of precoder is mapped to whole transmitting antennas.

And in the situation of quantity less than the quantity of a plurality of transmitting antennas of data flow, the processing that data flow is mapped to a plurality of transmitting antennas is specially: transmitting terminal is selected a kind of part mapping mode from the set of predefined mapping mode, according to selected mapping mode the output stream of precoder is mapped to the part transmitting antenna.

Preferably, the mapping mode of the first biography of data or data re-transmission is selected by system according to one of following rule: (1) agreement regulation, (2) system configuration and selection mode, (3) transmitting terminal of broadcasting by signaling carry out the adaptively selected of mapping mode according to the feedback information of receiving terminal.Wherein, the feedback information of receiving terminal comprises: the mapping mode of correctly the replying of mixed automatic retransfer request/wrong responses, channel quality indicated value, channel condition information, receiving terminal suggestion or indication.

And receiving terminal and transmitting terminal are predesignated the set of each transmission and each mapping mode that retransmits in the acquiescence mode and are transmitted and each mapping order that retransmits at every turn; The each transmission and the set of each mapping mode that retransmits and at every turn transmission and at every turn the mapping order of re-transmission of the common provisions for negotiations of mode that perhaps relies on receiving terminal and transmitting terminal to consult by signaling or message.

In addition, after transmitting terminal receives the feedback information of receiving terminal, can select voluntarily transmission or retransmit employed mapping mode according to feedback information.

After transmitting terminal receives the mapping mode of receiving terminal suggestion or indication, can also be according to the mapping mode of suggestion or indication selective reception end suggestion or indication.

Wherein, when maps data streams, shine upon at most a data flow on the transmitting antenna in a plurality of transmitting antennas.

Wherein, the data flow of data flow for processing through the multiple-input and multiple-output coding.

Wherein, transmitting terminal or receiving terminal are one of following: base station, relay station, subscriber equipment.

Preferably, under the mapping mode of when carrying out transfer of data, selecting, according to the corresponding mode maps data streams of the sequence number of antenna number and data symbol, under the mapping mode of when retransmitting, selecting, according to the antenna number maps data streams not corresponding with the sequence number of data symbol.

Preferably, in the selected mapping mode, there are two kinds of different mapping modes in the maximum retransmission based on system allows at least when carrying out the mapping mode of selecting when data transmit and retransmitting at every turn.

According to a further aspect in the invention, provide a kind of mixed automatic retransfer Request System for multi-input multi-output system.

Mixed automatic retransfer Request System for multi-input multi-output system according to the present invention comprises: module is set, is used for setting in advance multiple mapping mode, wherein, mapping mode comprises: Complete Mappings mode, part mapping mode; Map unit is used for when carrying out transfer of data, selects a kind of mapping mode from multiple mapping mode, with data flow to be sent be mapped in a plurality of transmitting antennas partly or entirely; Retransmit map unit, when being used in the situation of bust this, carrying out data re-transmission, from multiple mapping mode, reselect a kind of mapping mode, data flow is mapped to the part or all of of a plurality of transmitting antennas; A plurality of transmitting antennas are connected to map unit and retransmit map unit, are used for sending the data flow that is mapped on it.

Technique scheme has the following advantages or beneficial effect: change the mapping relations between data retransmission and the antenna, improve thus the transmission reliability of HARQ technology, reduce the error rate, improve data transmission efficiency.

Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of writing, claims and accompanying drawing.

Description of drawings

Accompanying drawing is used to provide a further understanding of the present invention, and consists of the part of specification, is used for together with embodiments of the present invention explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:

Fig. 1 is the HARQ FB(flow block) of mimo system in the correlation technique;

Fig. 2 is the flow chart according to the mixed automatic retransmission request method that is used for multi-input multi-output system of the inventive method embodiment;

Fig. 3 is for the system block diagram of realizing according to the mixed automatic retransmission request method that is used for multi-input multi-output system of the inventive method embodiment;

Fig. 4 is the schematic diagram according to the mapping mode of the method for the embodiment of the invention;

Fig. 5 is the schematic diagram of the cycle antenna mapping scheme when complete space is multiplexing in the application example 1 of the method for the embodiment of the invention;

Fig. 6 is the schematic diagram of selecting mapping scheme according to cycle antenna in the application example 2 of the method for the embodiment of the invention;

Fig. 7 is the schematic diagram according to cycle antenna mapping scheme corresponding to space diversity in the application example 3 of the method for the embodiment of the invention;

Fig. 8 is according to the process chart that changes the data flow mapping mode in the method for the inventive method embodiment by changing pre-coding matrix;

Fig. 9 is the execution schematic diagram that carries out according to change pre-coding matrix processing shown in Figure 8;

Figure 10 is the structured flowchart of the mixed automatic retransfer Request System that is used for multi-input multi-output system of system according to the invention embodiment.

Embodiment

Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, is not intended to limit the present invention.

Embodiment of the method

In the present embodiment, provide a kind of HARQ method for mimo system.

As shown in Figure 2, the HARQ method that is used for mimo system according to present embodiment comprises: step S202, when carrying out transfer of data, transmitting terminal is to select a kind of mapping mode in the multiple mapping mode that sets in advance, from whole optional part mapping modes, select a kind of part mapping mode, perhaps from whole optional Complete Mappings modes, select a kind of Complete Mappings mode, with data flow to be sent (data flow of the data flow of indication for processing through MIMO coding here) be mapped in a plurality of transmitting antennas partly or entirely, and send data flow to receiving terminal;

Step S204, when carrying out data re-transmission in the situation of bust this, transmitting terminal reselects a kind of mapping mode from multiple mapping mode, and data flow is mapped to the part or all of of a plurality of transmitting antennas, and retransmits data flow to receiving terminal.

Wherein, above-mentioned mapping mode comprises part mapping mode and/or Complete Mappings mode, wherein, when number of data streams equals number of transmission antennas, transmitting terminal and receiving terminal are shared a series of mapping modes that data flow are mapped to antenna that pre-define, these a series of mapping modes that pre-define all are called as the Complete Mappings mode, these a series of Complete Mappings modes that pre-define all be called whole optional Complete Mappings modes; When number of data streams during less than number of transmission antennas, transmitting terminal and receiving terminal are shared a series of mapping modes that data flow are mapped to antenna that pre-define, these a series of mapping modes that pre-define all are called as the part mapping mode, these a series of part mapping modes that pre-define all be called whole optional part mapping modes.Correspondingly, selecteed mapping mode can be called selected portions mapping mode or selected Complete Mappings mode.

For the selection of mapping mode, the mapping mode of the first biography of data or data re-transmission is selected by system according to one of following rule: (1) agreement regulation, (2) system configuration and selection mode, (3) transmitting terminal of broadcasting by signaling carry out the adaptively selected of mapping mode according to the feedback information of receiving terminal.

Wherein, when carrying out the mapping mode selection according to the agreement regulation, use the data-mapping mode of acquiescence when agreement is predesignated first biography and each time re-transmission, transmitting terminal will transmit and receive data with rule according to the data-mapping mode of agreement regulation in a certain order with all receiving terminals.

When carrying out the mapping mode selection according to the mode of system configuration and broadcasting, according to the data-mapping women story of application scenarios configuration-system when head passes with each time re-transmission, system is by signaling relevant transmitting terminal and/or receiving terminal, simultaneously, when application scenarios changes, system can change corresponding data-mapping mode and dispose, and by signaling to relevant transmitting terminal and/or receiving terminal, that is, the shared mapping mode of transmitting terminal and receiving terminal can be changed by broadcast in the course of the work.

Carry out when adaptively selected at transmitting terminal, transmitting terminal is selected mapping matrix adaptively according to the feedback information of receiving terminal, and by corresponding system equipment or the terminal of signaling.Particularly, the feedback information of receiving terminal comprises: feeding back ACK/NACK of HARQ, perhaps channel quality (Channel Quality Information, referred to as CQI) value, the perhaps data-mapping mode of channel condition information (Channel State Information is referred to as CSI), receiving terminal suggestion etc.

Need to prove, in the present invention, when shining upon processing, shine upon at most a data flow on the transmitting antenna in a plurality of transmitting antennas.

And receiving terminal and transmitting terminal are predesignated the set of each transmission and each mapping mode that retransmits in the acquiescence mode and are transmitted and each mapping order that retransmits at every turn; The each transmission and the set of each mapping mode that retransmits and at every turn transmission and at every turn the mapping order of re-transmission of the common provisions for negotiations of mode that perhaps relies on receiving terminal and transmitting terminal to consult by signaling or message.

In addition, after transmitting terminal receives the feedback information of receiving terminal, can select voluntarily transmission or retransmit employed mapping mode according to feedback information.

After transmitting terminal receives the mapping mode of receiving terminal suggestion or indication, can also be according to the mapping mode of suggestion or indication selective reception end suggestion or indication.

On the one hand, equal in the quantity of data flow in the situation of quantity of a plurality of transmitting antennas, namely, adopt the complete space multiplex mode, mapping in step S202 or step S204 is treated to: transmitting terminal is mapped to data flow whole in a plurality of transmitting antennas, that is, shine upon in the Complete Mappings mode.

On the other hand, in the situation of quantity less than the quantity of a plurality of transmitting antennas of data flow, namely, employing is based on the spatial multiplexing mode of sky line options, mapping in step S202 or step S204 is treated to: transmitting terminal is selected the part antenna in a plurality of transmitting antennas, shines upon and sends data flow in the part mapping mode; When retransmitting, transmitting terminal is selected a kind of part mapping mode again from whole optional part mapping modes, and shines upon and send data flow in selected part mapping mode.

Perhaps, when the spatial multiplexing mode that adopts based on the sky line options, mapping in step S202 or step S204 is treated to: transmitting terminal is selected the part antenna in a plurality of transmitting antennas, and part mapping mode maps data streams corresponding to part antenna to select, that is, shine upon in the part mapping mode.

Wherein, above-mentioned transmitting terminal or receiving terminal can be for one of following: base station, relay station, subscriber equipment.

The below uses description to realize the system of above-mentioned processing procedure.

Fig. 3 is the block diagram for the system of the HARQ method that is used for mimo system of the executive basis embodiment of the invention.As shown in Figure 3, after the MIMO of transmitting terminal (comprising base station, relay station, user terminal etc.) coding and precoding, increase a mapping processing processing unit 303 before the transmitting antenna, process in order to the mapping of finishing between data and the antenna, the antenna that the data communication device after then will shining upon is excessively corresponding sends.The data re-transmission process following steps of the embodiment of the invention: at first to remapping between data retransmission and the transmitting antenna, the data that then will be mapped on each antenna send, and, use different mapping modes when transmitting first with re-transmission that is.

The present invention will be described below in conjunction with embodiment.

In following example 1 and example 2, as shown in Figure 4, transmitting terminal and receiving terminal are shared 4 kinds of optional Complete Mappings modes (the optional Complete Mappings mode 4 of optional Complete Mappings mode 1-), and also share 4 kinds of part mapping modes (the optional part mapping mode 4 of optional part mapping mode 1-).

Example 1

Fig. 5 is the complete space of the example 1 according to the present invention cycle antenna mapping scheme when multiplexing.As shown in Figure 5, transmitting terminal configuration 4 transmitting antenna Tx1, Tx2, Tx3, Tx4 adopt the multiplexing mode the transmission of data of complete space simultaneously, and namely the MIMO transmission matrix is $\left[\begin{array}{c}{S}_1\\ S_2\\ S_3\\ S_4\end{array}\right],$ When the HARQ structure was transmitted first, transmitting terminal was selected optional Complete Mappings mode 1 from whole 4 kinds of optional Complete Mappings modes, antenna Tx1, Tx2, the upper respectively data symbol s of Tx3, Tx4 ₁, s ₂, s ₃, s ₄(Unit 501).When head spreads out of mistake and need to carry out retransmitting the first time, transmitting terminal reselects optional Complete Mappings mode 2 from whole 4 kinds of optional Complete Mappings modes, the mapping relations between data symbol and the antenna are changed into: antenna Tx1, Tx2, the upper respectively data symbol s of Tx3, Tx4 ₂, s ₃, s ₄, s ₁(Unit 502), in the time of need to retransmitting for the second time, transmitting terminal reselects optional Complete Mappings mode 3 from whole 4 kinds of optional Complete Mappings modes, then the mapping relations between data symbol and the antenna are changed into: antenna Tx1, Tx2, the upper respectively data symbol s of Tx3, Tx4 ₃, s ₄, s ₁, s ₂(Unit 503), in the time of need to retransmitting for the third time, transmitting terminal reselects optional Complete Mappings mode 4 from whole 4 kinds of optional Complete Mappings modes, the mapping relations between data symbol and the antenna are changed into: antenna Tx1, Tx2, the upper respectively data symbol s of Tx3, Tx4 ₄, s ₁, s ₂, s ₃(Unit 504).

When needs carry out the 4th time or during more multiple biography, mapping relations between data retransmission and the antenna can be selected according to the order of optional Complete Mappings mode 1, optional Complete Mappings mode 2, optional Complete Mappings mode 3, optional Complete Mappings mode 4 again, that is, select successively unit, Unit to 504 501.

Example 2

Fig. 6 is that the cycle antenna of the example 2 according to the present invention is selected mapping scheme.As shown in Figure 6, transmitting terminal configuration 4 transmitting antenna Tx1, Tx2, Tx3, Tx4 adopt the mode the transmission of data based on the spatial reuse of sky line options simultaneously, suppose wherein 3 antennas of each choice for use.

In the first transmission of HARQ, transmitting terminal is selected optional part mapping mode 1 from whole 4 kinds of optional part mapping modes, is chosen in antenna Tx1, Tx2, the upper respectively data symbol s of Tx3 ₁, s ₂, s ₃(Unit 601).

When head spreads out of mistake and need to carry out retransmitting the first time, transmitting terminal reselects optional part mapping mode 2 from whole 4 kinds of optional part mapping modes, the mapping relations between data symbol and the antenna are revised as: antenna Tx1, Tx2, the upper respectively data symbol s of Tx4 ₁, s ₂, s ₃(Unit 602), in the time of need to retransmitting for the second time, transmitting terminal reselects optional part mapping mode 3 from whole 4 kinds of optional part mapping modes, the mapping relations between data symbol and the antenna are changed into: antenna Tx1, Tx3, the upper respectively data symbol s of Tx4 ₁, s ₂, s ₃(Unit 603), in the time of need to retransmitting for the third time, transmitting terminal reselects optional part mapping mode 4 from whole 4 kinds of optional part mapping modes, the mapping relations between data symbol and the antenna are revised as: antenna Tx2, Tx3, the upper respectively data symbol s of Tx4 ₁, s ₂, s ₃(Unit 604).

When needs carry out the 4th time or during more multiple biography, the mapping relations between data retransmission and the antenna are selected according to the order of optional part mapping mode 1, optional part mapping mode 2, optional part mapping mode 3, optional part mapping mode 4 again.That is, select successively unit, Unit to 604 601.

In the following example that provides 3, as shown in Figure 7, transmitting terminal and receiving terminal are shared 6 kinds of optional part mapping modes, particularly, the corresponding optional part mapping mode 2 in the corresponding optional part mapping mode in the Unit 701 among Fig. 7 Unit 1,702, the corresponding optional part mapping mode 3 in Unit 703, the corresponding optional part mapping mode 6 in corresponding optional part mapping mode Unit 5,706, corresponding optional part mapping mode Unit 4,705, Unit 704.

Example 3

Fig. 7 is cycle antenna mapping scheme corresponding to the space diversity of the example 3 according to the present invention.As shown in Figure 7, transmitting terminal configuration 4 transmitting antenna Tx1, Tx2, Tx3, Tx4 adopt the mode the transmission of data based on the complete space diversity simultaneously.

When transmitting first, transmitting terminal is selected optional part mapping mode 1 from whole 6 kinds of optional part mapping modes, use 701 unit homographies, when retransmitting for the first time, transmitting terminal is selected optional part mapping mode 2 from whole 6 kinds of optional part mapping modes, use 702 unit homographies, when retransmitting for the second time, transmitting terminal is selected optional part mapping mode 3 from whole 6 kinds of optional part mapping modes, use 703 unit homographies, when retransmitting for the third time, transmitting terminal is selected optional part mapping mode 4 from whole 6 kinds of optional part mapping modes, use 704 unit homographies, when retransmitting for the 4th time, transmitting terminal is selected optional part mapping mode 5 from whole 6 kinds of optional part mapping modes, use 705 unit homographies, when retransmitting for the 5th time, transmitting terminal is selected optional part mapping mode 6 from whole 6 kinds of optional part mapping modes, use 706 unit homographies, retransmit as also needing, then the mapping relations between data and the antenna are again according to optional part mapping mode 1, optional part mapping mode 2, optional part mapping mode 3, optional part mapping mode 4, optional part mapping mode 5, the mode of optional part mapping mode 6 is selected.That is, select successively unit, Unit to 706 701.

In the middle of practical application, can adopt and from the set of mapping mode, select each mapping mode that sends and retransmit.

Be less than or equal in the quantity of data flow in the situation of quantity of a plurality of transmitting antennas, with data flow be mapped to a plurality of transmitting antennas part or all of processing can also for: transmitting terminal is selected a kind of mapping mode from the set of predefined mapping mode, according to selected mapping mode the data flow of precoder output is mapped to the some or all of of a plurality of transmitting antennas.

Particularly, equal in the quantity of data flow in the situation of quantity of a plurality of transmitting antennas, the processing that data flow is mapped to a plurality of transmitting antennas is specially: transmitting terminal is selected a kind of Complete Mappings mode from the set of predefined mapping mode, according to selected mapping mode the output stream of precoder is mapped to whole transmitting antennas.

In the situation of quantity less than the quantity of a plurality of transmitting antennas of data flow, the processing that data flow is mapped to a plurality of transmitting antennas is specially: transmitting terminal is selected a kind of part mapping mode from the set of predefined mapping mode, according to selected mapping mode the output stream of precoder is mapped to the part transmitting antenna.

The below will describe the detailed processing that realizes carrying out in the different mappings mode data flow mapping among the present invention in detail.

In correlation technique, the implementation of mapping is as follows:

In the MIMO precoding processing unit 105 in Fig. 1, the input data are proceeded as follows: to the input data, pre-coding matrix P of premultiplication, this pre-coding matrix P is made of two matrixes again, one is matrix W, and one is matrix D, and the W matrix has that M is capable, the L row, the D matrix has that M is capable, the M row, and wherein the D matrix has following form:

Matrix P is multiplied each other by D and W and obtains: P=DW;

Order input data are x, and then the output y of precoder is: y=Px.

Because in the process of carrying out the MIMO coding, the above-mentioned pre-coding matrix that multiplies each other can not change, cause mapping mode can not change, like this, if receiving terminal does not correctly receive signal (CRC detects and makes mistakes) after the transmission of data, then transmitting terminal retransfers the mode of primary signal according to first transmission once after receiving feedback information NACK.

Preferably, the present invention changes the mapping mode that remaps each time by change pre-coding matrix when remapping each time.

The below will describe the present invention in detail to the processing procedure of pre-coding matrix.

Precoder is increased a mapping matrix multiplication process, that is, and in transmitting each time and retransmitting, use aforesaid W matrix, the D matrix, with a variable mapping matrix (referring to shine upon each time all different), the pre-coding matrix P that jointly generates each transmission and retransmit.

Transmitting terminal and receiving terminal can according to predefined variable mapping matrix set, be constructed pre-coding matrix with different mapping matrixes when transmission is with re-transmission at every turn.

When number of data streams L equaled number of transmission antennas M, transmitting terminal and receiving terminal were shared the mapping matrix set that pre-defines, and the element in the mapping matrix that the pre-defines set all is called as the Complete Mappings matrix.

As number of data streams L during less than number of transmission antennas M, transmitting terminal and receiving terminal are shared the mapping matrix set that pre-defines, and the mapping matrix that pre-defines set all is called as the part mapping matrix.

Wherein, the Complete Mappings matrix must satisfy following 3 conditions simultaneously:

(1) arbitrary Complete Mappings matrix has M (M is the transmitting terminal number of antennas, and satisfies M 〉=2) OK, the M row;

(2) every delegation of arbitrary Complete Mappings matrix necessarily has and only has one 1, and all the other elements are zero entirely;

(3) each row of arbitrary Complete Mappings matrix necessarily have and only have one 1, and all the other elements are zero entirely.

The part mapping matrix must meet the following conditions simultaneously:

(1) arbitrary part mapping matrix has M (M is the transmitting terminal number of antennas, and satisfies M 〉=2) OK, L (L is number of data streams, and satisfied 0≤L≤M) be listed as;

(2) every delegation of arbitrary part mapping matrix only has at most one 1, and all the other elements are zero entirely; Perhaps do not have 1, all element all is zero;

(3) each row of arbitrary part mapping matrix necessarily have and only have one 1, and all the other elements are zero entirely.

Transmitting terminal is gathered according to predefined mapping matrix, in each transmission, use a part mapping matrix or Complete Mappings matrix, be referred to as selected portions mapping matrix or selected Complete Mappings matrix, represent this selected portions mapping matrix or the selected Complete Mappings matrix that this transmission is chosen with mark A, obtain in the following manner new pre-coding matrix P ':

P′＝DAW

Transmitting terminal carries out precoding processing with this new pre-coding matrix P ' to sending data.Sending unsuccessfully, receive in the situation of NACK message, transmitting terminal is gathered according to predefined mapping matrix, again from whole optional part mapping matrixes or whole optional Complete Mappings matrix, select a mapping matrix, be referred to as selected portions mapping matrix or selected Complete Mappings matrix, represent this selected portions mapping matrix or the selected Complete Mappings matrix that this is selected in retransmitting again with mark A, obtain in the following manner new pre-coding matrix P ':

P′＝DAW

Transmitting terminal carries out precoding processing with this new pre-coding matrix P ' to sending data.

The mapping matrix set that transmitting terminal and receiving terminal are shared is comprised of a series of part mapping matrixes and a series of Complete Mappings matrix of prior acquiescence.

Transmitting terminal can change the set of predefine mapping matrix according to resulting following information:

Feeding back ACK/NACK of HARQ or channel quality CQI (Channel QualityInformation) value or channel condition information CSI (Channel State Information), the predefine mapping matrix set of receiving terminal suggestion;

Preferably, equal in the quantity of data flow in the situation of quantity of transmitting antenna, transmitting terminal is according to Complete Mappings matrix of predefine mapping matrix Resource selection, be referred to as selected Complete Mappings matrix, represent this selected Complete Mappings matrix that this transmission is chosen with mark A, obtain in the following manner new pre-coding matrix P ':

P′＝DAW

Transmitting terminal is processed sending data with this new pre-coding matrix P '.Sending unsuccessfully, receive in the situation of NACK message, transmitting terminal reselects a Complete Mappings matrix according to the set of predefine mapping matrix, be referred to as selected Complete Mappings matrix, represent this selected Complete Mappings matrix that this is selected in retransmitting again with mark A, obtain in the following manner new pre-coding matrix P '

P′＝DAW

Transmitting terminal carries out precoding processing with this new pre-coding matrix P ' to sending data.

Preferably, in the situation of quantity less than the quantity of transmitting antenna of data flow, transmitting terminal is according to part mapping matrix of predefine mapping matrix Resource selection, be referred to as the selected portions mapping matrix, represent this selected portions mapping matrix that this transmission is chosen with mark A, obtain in the following manner new pre-coding matrix P '

P′＝DAW

Transmitting terminal is processed sending data with this new pre-coding matrix P '.Sending unsuccessfully, receive in the situation of NACK message, transmitting terminal reselects a part mapping matrix according to the set of predefine mapping matrix, be referred to as the selected portions mapping matrix, represent this selected portions mapping matrix that this is selected in retransmitting again with mark A, obtain in the following manner new pre-coding matrix P '

P′＝DAW

Transmitting terminal carries out precoding processing with this new pre-coding matrix P ' to sending data.

Alternatively, the mode of matrix multiple not only can be P=DAW, can also be P=DWA.In actual applications, transmitting terminal and receiving terminal should adopt the same mode that multiplies each other.

Preferably, the prior given transmission and repeatedly retransmit the set of employed predefine mapping matrix of receiving-transmitting sides.After receiving-transmitting sides had been specified the predefine mapping matrix set that should use in the transmission of a HARQ and the retransmission processes, receiving-transmitting sides gathered to come generating pre-coding matrix according to the predefine mapping matrix that transmits appointment for this HARQ in advance.

Preferably, above-mentioned transmitting terminal or receiving terminal can be for one of following: base station, relay station, subscriber equipment.

According to another embodiment of the present invention, a kind of mixed automatic retransfer request emission system for multi-input multi-output system is provided, comprise: precoder, be used for selecting a part mapping matrix or Complete Mappings matrix for transmission with repeatedly retransmitting according to the set of predefine mapping matrix, represent this selected portions mapping matrix or the selected Complete Mappings matrix that this transmission is chosen with mark A, obtain in the following manner new pre-coding matrix P '

P′＝DAW

Transmitting terminal carries out precoding processing with this new pre-coding matrix P ' to sending data.Sending unsuccessfully, receive in the situation of NACK message, transmitting terminal reselects a mapping matrix according to predefined mapping matrix set, be referred to as selected portions mapping matrix or selected Complete Mappings matrix, represent this selected portions mapping matrix or the selected Complete Mappings matrix that this is selected in retransmitting again with mark A, obtain in the following manner new pre-coding matrix P '

P′＝DAW

Transmitting terminal carries out precoding processing with this new pre-coding matrix P ' to sending data.

Preferably, equal in the quantity of data flow in the situation of quantity of transmitting antenna, the processing that above-mentioned precoding unit is constructed pre-coding matrix according to predefine mapping matrix Resource selection Complete Mappings matrix is specially: send the selected above-mentioned selected Complete Mappings matrix of precoding unit, represent selected Complete Mappings matrix with mark A, obtain as follows new pre-coding matrix P '

P′＝DAW

Transmitting terminal carries out precoding processing with this new pre-coding matrix P ' to sending data.Perhaps when re-transmission, send pretreatment unit according to predefine mapping matrix set again selected selected Complete Mappings matrix, this selected Complete Mappings matrix of selecting when representing that with mark A this retransmits obtains new pre-coding matrix P ' in the following manner

P′＝DAW

Transmitting terminal carries out precoding processing with this new pre-coding matrix P ' to sending data.

Preferably, in the situation of quantity less than the quantity of transmitting antenna of data flow, above-mentioned transmission precoding unit is specially according to the processing of predefine mapping matrix Resource selection part mapping matrix construction pre-coding matrix: the mapping matrix that sends the selected above-mentioned selected portions mapping of pretreatment unit, represent the selected portions mapping matrix that this transmission is selected with mark A, obtain in the following manner new pre-coding matrix P '

P′＝DAW

Transmitting terminal carries out precoding processing with this new pre-coding matrix P ' to sending data.Or when retransmitting, send pretreatment unit and reselect the part mapping matrix according to the set of predefine mapping matrix, this selected portions mapping matrix of selecting when representing that with mark A this retransmits obtains new pre-coding matrix P ' in the following manner

P′＝DAW

Transmitting terminal carries out precoding processing with this new pre-coding matrix P ' to sending data.

Preferably, in advance given transmission and the employed predefine mapping matrix set of re-transmission of receiving-transmitting sides.After receiving-transmitting sides had been specified the predefine mapping matrix set that should use in the transmission of a HARQ and the retransmission processes, receiving-transmitting sides gathered to come generating pre-coding matrix according to the predefine mapping matrix that transmits appointment for this HARQ in advance.

As shown in Figure 8, the HARQ method that is used for mimo system according to present embodiment comprises: once after the transmission beginning, at step S801, transmitting terminal is with retransmission times counter zero setting, step S802, transmitting terminal is according to part mapping matrix of predefine mapping matrix Resource selection, perhaps according to Complete Mappings matrix of predefine mapping matrix Resource selection, remember that this part mapping matrix or Complete Mappings matrix are A, transmitting terminal calculates P '=DAW in precoding module, send the emission pre-coding matrix that uses with this P ' as this; If received ACK message, then finish; Otherwise, step S803, do not receiving ACK, and number of retransmissions not yet surpasses in the situation of restriction, transmitting terminal reselects a part mapping matrix according to the set of predefine mapping matrix, perhaps reselects a Complete Mappings matrix according to the set of predefine mapping matrix, remembers that this part mapping matrix or Complete Mappings matrix are A, transmitting terminal calculates P '=DAW in precoding module, retransmit the emission pre-coding matrix that uses with this P ' as this; Step S804, transmitting terminal adds 1 with retransmission times counter; Transmitting terminal repeating step S803, S804, until receive ACK message, perhaps number of retransmissions reaches restriction, just finishes.

Wherein, above-mentioned transmitting terminal or receiving terminal can be for one of following: base station, relay station, subscriber equipment.

The system that is used for realizing above-mentioned processing procedure is described below in conjunction with Fig. 9.

At transmitting terminal, (each data flow can carry the CRC check code word of oneself to the individual customer traffic of s waiting for transmission (s 〉=0), also may not carry the CRC check code word of oneself) at first carry out dispatch deal by dispatcher unit 901, then the chnnel coding by cell encoder 902, interweave, rate-matched and modulation treatment, if vertical coding, then only has a cell encoder, and only form a layer data, otherwise a plurality of cell encoders will be arranged, form multi-layer data.These modulated data symbol are mapped on the corresponding time/frequency source block in resource mapping module 903, resource mapping module 903 does not change the number of data Layer, the output of resource mapping module 903, be admitted to MIMO cell encoder 904, form L (the individual data flow waiting for transmission of L≤M), these data flow are admitted to beam forming/precoder unit 905 (hereafter is precoder), precoder is mapped as the individual transmission data flow of M (M 〉=1) with this L data flow, in this M the stream whether data may be arranged, perhaps data are complete zero sky stream, this M sends data flow and is admitted to OFDM symbol former unit 906, form M OFDM phy symbol, this M OFDM phy symbol is transfused to IFFT converter 907, be sent to again on M the antenna and send, if a stream corresponding to antenna is empty stream, this antenna does not just send any signal so.

In the above-mentioned MIMO precoding processing unit 905, the input data are proceeded as follows:

To the input data, pre-coding matrix P of premultiplication, this P is made of two matrixes again, and one is matrix W, and one is matrix D, and the W matrix has that M is capable, the L row, and the D matrix has that M is capable, the M row, and wherein the D matrix has following form:

Matrix P is multiplied each other by D and W and obtains:

P＝DW

Order input data are x, and then the output y of precoder is

y＝Px

Sending unsuccessfully, receive in the situation of NACK message, transmitting terminal reselects a mapping matrix according to the set of predefine mapping matrix, be referred to as selected portions mapping matrix or selected Complete Mappings matrix, represent this part mapping matrix or the Complete Mappings matrix that this is used in retransmitting with mark A, obtain in the following manner new pre-coding matrix P '

P′＝DAW

Transmitting terminal carries out precoding processing with this new pre-coding matrix P ' to sending data.

Change the processing of mapping mode by changing pre-coding matrix below with reference to concrete scene description.Fig. 9 shows the processing schematic diagram that passes through to change pre-coding matrix change mapping mode realization HARQ according to the inventive method embodiment.

As shown in Figure 9, realize according to relating in the HARQ process of the present invention: user's 1 data are to user n data, scheduler 901, a plurality of encoder 902, resource mapping 903, MIMO encoder 904, beam-shaper/precoder 905, OFDM symbol construction 906, a plurality of IFFT307 and a plurality of antenna 308.Be described below in conjunction with the matrix disposal in beam-shaper/precoder 905.

Scene 1

Table 1 shows in the scene 1 complete space that uses for open loop MIMO-HARQ transmitting-receiving is two when multiplexing sends out the set that contain 4 Complete Mappings matrixes of sharing, and they are A1 by label respectively, A2, A3, A4.Transmitting terminal configuration 4 transmitting antenna Tx1, Tx2, Tx3 and Tx4.MIMO transmission of data signals vector, that is, the input vector of precoder unit 905 is x among Fig. 9, establish this moment x line number be 4, and this moment input traffic number less than number of antennas.

Table 1

When the HARQ data are transmitted first, transmitting terminal is according to predefine mapping matrix Resource selection Complete Mappings matrix A 1, in precoder unit 905 by known pre-coding matrix W, and matrix D and A1, they are multiplied each other according to following order, and it is as follows jointly to construct pre-coding matrix:

P＝DA1W

Transmitting terminal utilizes this pre-coding matrix P=DA1W to process the input data, and the output of precoder unit 905 is expressed as:

$y=\mathrm{Px}=\mathrm{<figure-callout\; id="1"\; label="DA"\; filenames="H2008102150351E00041.png,H2008102150351E00052.png"\; state="\{\{state\}\}">DA</figure-callout>}1\mathrm{Wx}$

$=\mathrm{<figure-callout\; id="1"\; label="D"\; filenames="H2008102150351E00041.png,H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}\left(\begin{array}{cccc}1& 0& 0& 0\\ 0& 1& 0& 0\\ 0& 0& 1& 0\\ 0& 0& 0& 1\end{array}\right)\mathrm{Wx}$

When head spread out of mistake and need to carry out retransmitting the first time, transmitting terminal was according to predefine mapping matrix Resource selection Complete Mappings matrix A 2.

By known pre-coding matrix W, and matrix D and A2 multiply each other them according to following order in precoder unit 905, and it is as follows jointly to construct pre-coding matrix:

P′＝DA2W

Transmitting terminal utilizes this pre-coding matrix P '=DA2W to process the input data, and the output of precoder unit 905 can be expressed as:

$y=P\&prime;x=\mathrm{<figure-callout\; id="2"\; label="DA"\; filenames="H2008102150351E00041.png,H2008102150351E00042.png"\; state="\{\{state\}\}">DA</figure-callout>}2\mathrm{Wx}$

$=\mathrm{<figure-callout\; id="0"\; label="D"\; filenames="H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}\left(\begin{array}{cccc}0& 0& 1& 0\\ 0& 0& 0& 1\\ 1& 0& 0& 0\\ 0& 1& 0& 0\end{array}\right)\mathrm{Wx}$

When needs retransmitted for the second time, transmitting terminal was according to predefine mapping matrix Resource selection Complete Mappings matrix A 3.

By known pre-coding matrix W, and matrix D and A3 multiply each other them according to following order in precoder unit 905, and it is as follows jointly to construct pre-coding matrix:

P′＝DA3W

Transmitting terminal utilizes this pre-coding matrix P '=DA3W to process the input data, and the at this moment output of precoder unit 905 can be expressed as:

$y=P\&prime;x=\mathrm{<figure-callout\; id="3"\; label="DA"\; filenames="H2008102150351E00041.png,H2008102150351E00042.png"\; state="\{\{state\}\}">DA</figure-callout>}3\mathrm{Wx}$

$=\mathrm{<figure-callout\; id="0"\; label="D"\; filenames="H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}\left(\begin{array}{cccc}0& 1& 0& 0\\ 1& 0& 0& 0\\ 0& 0& 0& 1\\ 0& 0& 1& 0\end{array}\right)\mathrm{Wx}$

In the time of need to retransmitting for the third time, transmitting terminal is according to predefine mapping matrix Resource selection Complete Mappings matrix A 4.

By known pre-coding matrix W, and matrix D and A4 multiply each other them according to following order in precoder unit 905, and it is as follows jointly to construct pre-coding matrix:

P′＝DA4W

Transmitting terminal utilizes this pre-coding matrix P '=DA4W to process the input data, and the output of precoder unit 905 can be expressed as:

$y=P\&prime;x=\mathrm{<figure-callout\; id="4"\; label="DA"\; filenames="H2008102150351E00042.png,H2008102150351E00052.png"\; state="\{\{state\}\}">DA</figure-callout>}4\mathrm{Wx}$

$=\mathrm{<figure-callout\; id="0"\; label="D"\; filenames="H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}\left(\begin{array}{cccc}0& 0& 0& 1\\ 0& 0& 1& 0\\ 0& 1& 0& 0\\ 1& 0& 0& 0\end{array}\right)\mathrm{Wx}$

When needs carry out the 4th time or during more multiple biography, transmitting terminal is selected according to the order of Complete Mappings matrix A 1, Complete Mappings matrix A 2, Complete Mappings matrix A 3 and Complete Mappings matrix A 4 again, that is, as shown in table 2.

Table 2

Scene 2

Table 3 shows the shared predefine mapping matrix set that contains 4 part mapping matrixes of receiving-transmitting sides of adopting in the scene 2.They are B1 by label respectively, B2, and B3, B4, transmitting terminal disposes 4 transmitting antennas, adopts simultaneously the mode the transmission of data of spatial reuse.MIMO transmission of data signals vector, that is, the input vector of precoder unit 905 is x among Fig. 9, and the x line number of establishing this moment is 3, and the number of input traffic is less than number of antennas at this moment.

Table 3

When the HARQ data are transmitted first, transmitting terminal is according to predefine mapping matrix Resource selection part mapping matrix B 1, in precoder unit 905 by known pre-coding matrix W, and matrix D and B1, they are multiplied each other according to following order, and it is as follows jointly to construct pre-coding matrix:

P＝DB1W

Transmitting terminal utilizes this pre-coding matrix P=DB1W to process the input data, and the output of precoder unit 905 is expressed as:

$y=\mathrm{Px}=\mathrm{<figure-callout\; id="1"\; label="DB"\; filenames="H2008102150351E00041.png,H2008102150351E00052.png"\; state="\{\{state\}\}">DB</figure-callout>}1\mathrm{Wx}$

$=\mathrm{<figure-callout\; id="1"\; label="D"\; filenames="H2008102150351E00041.png,H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}\left(\begin{array}{ccc}1& 0& 0\\ 0& 1& 0\\ 0& 0& 1\\ 0& 0& 0\end{array}\right)\mathrm{Wx}$

When head spreads out of mistake and need to carry out retransmitting the first time, transmitting terminal is according to predefine mapping matrix Resource selection part mapping matrix B 2, in precoder unit 905 by known pre-coding matrix W, and matrix D and B2, they are multiplied each other according to following order, and it is as follows jointly to construct pre-coding matrix:

P′＝DB2W

Transmitting terminal utilizes this pre-coding matrix P '=DB2W to process the input data, and the output of precoder unit 905 is expressed as:

$y=\mathrm{Px}=\mathrm{<figure-callout\; id="2"\; label="DB"\; filenames="H2008102150351E00041.png,H2008102150351E00042.png"\; state="\{\{state\}\}">DB</figure-callout>}2\mathrm{Wx}$

$=\mathrm{<figure-callout\; id="0"\; label="D"\; filenames="H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}\left(\begin{array}{ccc}0& 0& 1\\ 0& 0& 0\\ 1& 0& 0\\ 0& 1& 0\end{array}\right)\mathrm{Wx}$

In the time of need to retransmitting for the second time, transmitting terminal is according to predefine mapping matrix Resource selection part mapping matrix B 3, in precoder unit 905 by known pre-coding matrix W, and matrix D and B3, they are multiplied each other according to following order, and it is as follows jointly to construct pre-coding matrix:

P′＝DB3W

Transmitting terminal utilizes this pre-coding matrix P '=DB3W to process the input data, and the output of precoder unit 305 is expressed as:

$y=\mathrm{Px}=\mathrm{<figure-callout\; id="3"\; label="DB"\; filenames="H2008102150351E00041.png,H2008102150351E00042.png"\; state="\{\{state\}\}">DB</figure-callout>}3\mathrm{Wx}$

$=\mathrm{<figure-callout\; id="0"\; label="D"\; filenames="H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}\left(\begin{array}{ccc}0& 1& 0\\ 1& 0& 0\\ 0& 0& 0\\ 0& 0& 1\end{array}\right)\mathrm{Wx}$

In the time of need to retransmitting for the third time, transmitting terminal is according to predefine mapping matrix Resource selection part mapping matrix B 4, in precoder unit 905 by known pre-coding matrix W, and matrix D and B4, they are multiplied each other according to following order, and it is as follows jointly to construct pre-coding matrix:

P′＝DB4W

Transmitting terminal utilizes this pre-coding matrix P '=DB4W to process the input data, and the output of precoder unit 905 is expressed as:

$y=\mathrm{Px}=\mathrm{<figure-callout\; id="4"\; label="DB"\; filenames="H2008102150351E00042.png,H2008102150351E00052.png"\; state="\{\{state\}\}">DB</figure-callout>}4\mathrm{Wx}$

$=\mathrm{<figure-callout\; id="0"\; label="D"\; filenames="H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}\left(\begin{array}{ccc}0& 0& 0\\ 0& 0& 1\\ 0& 1& 0\\ 1& 0& 0\end{array}\right)\mathrm{Wx}$

When needs carry out the 4th time or during more multiple biography, the mapping relations between data retransmission and the antenna are again according to part mapping matrix B 1, part mapping matrix B 2, and part mapping matrix B 3, the order of part mapping matrix B 4 is selected, that is, as shown in table 4.

Table 4

By technique scheme of the present invention, because the primary signal that retransmits is transmitted through different antenna and channels, can at stronger transmission, increase the space diversity gain when retransmitting so that the symbol of error code occurs.

Scene 3

Table 1 shows in the scene 1 complete space that uses for closed-loop MIMO-HARQ transmitting-receiving is two when multiplexing sends out the set that contain 4 Complete Mappings matrixes of sharing, and they are A1 by label respectively, A2, A3, A4.Transmitting terminal configuration 4 transmitting antenna Tx1, Tx2, Tx3 and Tx4.MIMO transmission of data signals vector, that is, the input vector of precoder unit 905 is x among Fig. 9, establish this moment x line number be 4, and this moment input traffic number less than number of antennas.

When the HARQ data are transmitted first, transmitting terminal is according to predefine mapping matrix Resource selection Complete Mappings matrix A 1, in precoder unit 905 by known pre-coding matrix W, and matrix D and A1, they are multiplied each other according to following order, and it is as follows jointly to construct pre-coding matrix:

P＝DA1W

Transmitting terminal utilizes this pre-coding matrix P=DA1W to process the input data, and the output of precoder unit 905 is expressed as:

$y=\mathrm{Px}=\mathrm{<figure-callout\; id="1"\; label="DA"\; filenames="H2008102150351E00041.png,H2008102150351E00052.png"\; state="\{\{state\}\}">DA</figure-callout>}1\mathrm{Wx}$

$=\mathrm{<figure-callout\; id="1"\; label="D"\; filenames="H2008102150351E00041.png,H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}\left(\begin{array}{cccc}1& 0& 0& 0\\ 0& 1& 0& 0\\ 0& 0& 1& 0\\ 0& 0& 0& 1\end{array}\right)\mathrm{Wx}$

When head spreads out of mistake and need to carry out retransmitting the first time, receiving terminal is according to current channel quality status, send feedback information to transmitting terminal, the suggestion transmitting terminal is according to predefine mapping matrix Resource selection Complete Mappings matrix A 4, transmitting terminal when retransmitting for the first time according to predefine mapping matrix Resource selection Complete Mappings matrix A 4.

By known pre-coding matrix W, and matrix D and A4 multiply each other them according to following order in precoder unit 905, and it is as follows jointly to construct pre-coding matrix:

P′＝DA4W

Transmitting terminal utilizes this pre-coding matrix P '=DA4W to process the input data, and the output of precoder unit 905 can be expressed as:

$y=P\&prime;x=\mathrm{<figure-callout\; id="4"\; label="DA"\; filenames="H2008102150351E00042.png,H2008102150351E00052.png"\; state="\{\{state\}\}">DA</figure-callout>}4\mathrm{Wx}$

$=\mathrm{<figure-callout\; id="0"\; label="D"\; filenames="H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}\left(\begin{array}{cccc}0& 0& 0& 1\\ 0& 0& 1& 0\\ 0& 1& 0& 0\\ 1& 0& 0& 0\end{array}\right)\mathrm{Wx}$

When needs retransmit for the second time, receiving terminal is according to current channel quality status, send feedback information to transmitting terminal, the suggestion transmitting terminal is according to predefine mapping matrix Resource selection Complete Mappings matrix A 2, and transmitting terminal is according to predefine mapping matrix Resource selection Complete Mappings matrix A 2.

By known pre-coding matrix W, and matrix D and A2 multiply each other them according to following order in precoder unit 905, and it is as follows jointly to construct pre-coding matrix:

P′＝DA2W

Transmitting terminal utilizes this pre-coding matrix P '=DA2W to process the input data, and the at this moment output of precoder unit 905 can be expressed as:

$y=P\&prime;x=\mathrm{<figure-callout\; id="2"\; label="DA"\; filenames="H2008102150351E00041.png,H2008102150351E00042.png"\; state="\{\{state\}\}">DA</figure-callout>}2\mathrm{Wx}$

$=\mathrm{<figure-callout\; id="0"\; label="D"\; filenames="H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}\left(\begin{array}{cccc}0& 0& 1& 0\\ 0& 0& 0& 1\\ 1& 0& 0& 0\\ 0& 1& 0& 0\end{array}\right)\mathrm{Wx}$

In the time of need to retransmitting for the third time, receiving terminal is according to current channel quality status, send feedback information to transmitting terminal, the suggestion transmitting terminal is according to predefine mapping matrix Resource selection Complete Mappings matrix A 3, and transmitting terminal is according to predefine mapping matrix Resource selection Complete Mappings matrix A 3.

By known pre-coding matrix W, and matrix D and A3 multiply each other them according to following order in precoder unit 905, and it is as follows jointly to construct pre-coding matrix:

P′＝DA3W

Transmitting terminal utilizes this pre-coding matrix P '=DA3W to process the input data, and the output of precoder unit 905 can be expressed as:

$y=P\&prime;x=\mathrm{<figure-callout\; id="3"\; label="DA"\; filenames="H2008102150351E00041.png,H2008102150351E00042.png"\; state="\{\{state\}\}">DA</figure-callout>}3\mathrm{Wx}$

$=\mathrm{<figure-callout\; id="0"\; label="D"\; filenames="H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}\left(\begin{array}{cccc}0& 1& 0& 0\\ 1& 0& 0& 0\\ 0& 0& 0& 1\\ 0& 0& 1& 0\end{array}\right)\mathrm{Wx}$

When needs carry out the 4th time or during more multiple biography, transmitting terminal continues the mapping mode according to the receiving terminal suggestion, selects from Complete Mappings matrix A 1, A2, A3, A4.

Scene 4

Table 3 shows the shared predefine mapping matrix set that contains 4 part mapping matrixes of receiving-transmitting sides that closed-loop MIMO in the scene 4-HARQ adopts.They are B1 by label respectively, B2, and B3, B4, transmitting terminal disposes 4 transmitting antennas, adopts simultaneously the mode the transmission of data of spatial reuse.MIMO transmission of data signals vector, that is, the input vector of precoder unit 905 is x among Fig. 9, and the x line number of establishing this moment is 3, and the number of input traffic is less than number of antennas at this moment.

When the HARQ data are transmitted first, transmitting terminal is according to predefine mapping matrix Resource selection part mapping matrix B 1, in precoder unit 905 by known pre-coding matrix W, and matrix D and B1, they are multiplied each other according to following order, and it is as follows jointly to construct pre-coding matrix:

P＝DB1W

Transmitting terminal utilizes this pre-coding matrix P=DB1W to process the input data, and the output of precoder unit 905 is expressed as:

$y=\mathrm{Px}=\mathrm{<figure-callout\; id="1"\; label="DB"\; filenames="H2008102150351E00041.png,H2008102150351E00052.png"\; state="\{\{state\}\}">DB</figure-callout>}1\mathrm{Wx}$

$=\mathrm{<figure-callout\; id="1"\; label="D"\; filenames="H2008102150351E00041.png,H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}\left(\begin{array}{ccc}1& 0& 0\\ 0& 1& 0\\ 0& 0& 1\\ 0& 0& 0\end{array}\right)\mathrm{Wx}$

When head spreads out of mistake and need to carry out retransmitting the first time, receiving terminal feeds back to transmitting terminal according to channel quality, the suggestion transmitting terminal is selected part mapping matrix B3, transmitting terminal is advised according to this, from predefine mapping matrix Resource selection part mapping matrix B 3, in precoder unit 905 by known pre-coding matrix W, and matrix D and B3, they are multiplied each other according to following order, and it is as follows jointly to construct pre-coding matrix:

P′＝DB3W

Transmitting terminal utilizes this pre-coding matrix P '=DB3W to process the input data, and the output of precoder unit 905 is expressed as:

$y=\mathrm{Px}=\mathrm{<figure-callout\; id="3"\; label="DB"\; filenames="H2008102150351E00041.png,H2008102150351E00042.png"\; state="\{\{state\}\}">DB</figure-callout>}3\mathrm{Wx}$

$=\mathrm{<figure-callout\; id="0"\; label="D"\; filenames="H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}\left(\begin{array}{ccc}0& 1& 0\\ 1& 0& 0\\ 0& 0& 0\\ 0& 0& 1\end{array}\right)\mathrm{Wx}$

In the time of need to retransmitting for the second time, receiving terminal feeds back to transmitting terminal according to channel quality, the suggestion transmitting terminal is selected part mapping matrix B4, transmitting terminal is advised according to this, from predefine mapping matrix Resource selection part mapping matrix B 4, in precoder unit 905 by known pre-coding matrix W, and matrix D and B4, they are multiplied each other according to following order, and it is as follows jointly to construct pre-coding matrix:

P′＝DB4W

Transmitting terminal utilizes this pre-coding matrix P '=DB4W to process the input data, and the output of precoder unit 305 is expressed as:

$y=\mathrm{Px}=\mathrm{<figure-callout\; id="4"\; label="DB"\; filenames="H2008102150351E00042.png,H2008102150351E00052.png"\; state="\{\{state\}\}">DB</figure-callout>}4\mathrm{Wx}$

$=\mathrm{<figure-callout\; id="0"\; label="D"\; filenames="H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}\left(\begin{array}{ccc}0& 0& 0\\ 0& 0& 1\\ 0& 1& 0\\ 1& 0& 0\end{array}\right)\mathrm{Wx}$

In the time of need to retransmitting for the third time, receiving terminal feeds back to transmitting terminal according to channel quality, the suggestion transmitting terminal is selected part mapping matrix B2, transmitting terminal is advised according to this, from predefine mapping matrix Resource selection part mapping matrix B 2, in precoder unit 905 by known pre-coding matrix W, and matrix D and B2, they are multiplied each other according to following order, and it is as follows jointly to construct pre-coding matrix:

P′＝DB2W

Transmitting terminal utilizes this pre-coding matrix P '=DB2W to process the input data, and the output of precoder unit 905 is expressed as:

$y=\mathrm{Px}=\mathrm{<figure-callout\; id="2"\; label="DB"\; filenames="H2008102150351E00041.png,H2008102150351E00042.png"\; state="\{\{state\}\}">DB</figure-callout>}2\mathrm{Wx}$

$=\mathrm{<figure-callout\; id="0"\; label="D"\; filenames="H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}\left(\begin{array}{ccc}0& 0& 1\\ 0& 0& 0\\ 1& 0& 0\\ 0& 1& 0\end{array}\right)\mathrm{Wx}$

When needs carry out the 4th time or during more multiple biography, transmitting terminal continues the suggestion that feeds back according to receiving terminal, in transmitting each time and retransmitting from part mapping matrix B 1, B2, B3, selection part mapping matrix transmits among the B4

Scene 5

Table 1 shows in the scene 5 complete space that uses for open loop MIMO-HARQ transmitting-receiving is two when multiplexing sends out the set that contain 4 Complete Mappings matrixes of sharing, and they are A1 by label respectively, A2, A3, A4.Transmitting terminal configuration 4 transmitting antenna Tx1, Tx2, Tx3 and Tx4.MIMO transmission of data signals vector, that is, the input vector of precoder unit 905 is x among Fig. 9, establish this moment x line number be 4, and this moment input traffic number less than number of antennas.

When the HARQ data are transmitted first, transmitting terminal is according to predefine mapping matrix Resource selection Complete Mappings matrix A 1, in precoder unit 905 by known pre-coding matrix W, and matrix D and A1, they are multiplied each other according to following order, and it is as follows jointly to construct pre-coding matrix:

P＝DWA1

Transmitting terminal utilizes this pre-coding matrix P=DWA1 to process the input data, and the output of precoder unit 905 is expressed as:

$y=\mathrm{Px}=\mathrm{DWA}1x$

$=\mathrm{<figure-callout\; id="1"\; label="D\; W"\; filenames="H2008102150351E00041.png,H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}W\left(\begin{array}{cccc}1& 0& 0& 0\\ 0& 1& 0& 0\\ 0& 0& 1& 0\\ 0& 0& 0& 1\end{array}\right)x$

When head spread out of mistake and need to carry out retransmitting the first time, transmitting terminal was according to predefine mapping matrix Resource selection Complete Mappings matrix A 2.

By known pre-coding matrix W, and matrix D and A2 multiply each other them according to following order in precoder unit 905, and it is as follows jointly to construct pre-coding matrix:

P′＝DWA2

Transmitting terminal utilizes this pre-coding matrix P '=DWA2 to process the input data, and the output of precoder unit 905 can be expressed as:

$y=P\&prime;x=\mathrm{DWA}2x$

$=\mathrm{<figure-callout\; id="0"\; label="DW"\; filenames="H2008102150351E00052.png"\; state="\{\{state\}\}">DW</figure-callout>}\left(\begin{array}{cccc}0& 0& 1& 0\\ 0& 0& 0& 1\\ 1& 0& 0& 0\\ 0& 1& 0& 0\end{array}\right)x$

When needs retransmitted for the second time, transmitting terminal was according to predefine mapping matrix Resource selection Complete Mappings matrix A 3.

By known pre-coding matrix W, and matrix D and A3 multiply each other them according to following order in precoder unit 905, and it is as follows jointly to construct pre-coding matrix:

P′＝DWA3

Transmitting terminal utilizes this pre-coding matrix P '=DWA3 to process the input data, and the at this moment output of precoder unit 905 can be expressed as:

$y=P\&prime;x=\mathrm{DWA}3x$

$=\mathrm{<figure-callout\; id="0"\; label="D\; W"\; filenames="H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}W\left(\begin{array}{cccc}0& 0& 1& 0\\ 0& 0& 0& 1\\ 1& 0& 0& 0\\ 0& 1& 0& 0\end{array}\right)x$

In the time of need to retransmitting for the third time, transmitting terminal is according to predefine mapping matrix Resource selection Complete Mappings matrix A 4.

By known pre-coding matrix W, and matrix D and A4 multiply each other them according to following order in precoder unit 905, and it is as follows jointly to construct pre-coding matrix:

P′＝DWA4

Transmitting terminal utilizes this pre-coding matrix P '=DWA4 to process the input data, and the output of precoder unit 905 can be expressed as:

$y=P\&prime;x=\mathrm{DWA}4x$

$=\mathrm{<figure-callout\; id="0"\; label="D\; W"\; filenames="H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}W\left(\begin{array}{cccc}0& 0& 0& 1\\ 0& 0& 1& 0\\ 0& 1& 0& 0\\ 1& 0& 0& 0\end{array}\right)x$

When needs carry out the 4th time or during more multiple biography, transmitting terminal is selected according to the order of Complete Mappings matrix A 1, Complete Mappings matrix A 2, Complete Mappings matrix A 3 and Complete Mappings matrix A 4 again.

Scene 6

Table 3 shows the shared predefine mapping matrix set that contains 4 part mapping matrixes of receiving-transmitting sides of adopting in the scene 6.They are B1 by label respectively, B2, and B3, B4, transmitting terminal disposes 4 transmitting antennas, adopts simultaneously the mode the transmission of data of spatial reuse.MIMO transmission of data signals vector, that is, the input vector of precoder unit 905 is x among Fig. 9, and the x line number of establishing this moment is 3, and the number of input traffic is less than number of antennas at this moment.

When the HARQ data are transmitted first, transmitting terminal is according to predefine mapping matrix Resource selection part mapping matrix B 1, in precoder unit 905 by known pre-coding matrix W, and matrix D and B1, they are multiplied each other according to following order, and it is as follows jointly to construct pre-coding matrix:

P＝DWB1

Transmitting terminal utilizes this pre-coding matrix P=DWB1 to process the input data, and the output of precoder unit 905 is expressed as:

$y=\mathrm{Px}=\mathrm{DWB}1x$

$=\mathrm{<figure-callout\; id="1"\; label="D\; W"\; filenames="H2008102150351E00041.png,H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}W\left(\begin{array}{ccc}1& 0& 0\\ 0& 1& 0\\ 0& 0& 1\\ 0& 0& 0\end{array}\right)x$

When head spreads out of mistake and need to carry out retransmitting the first time, transmitting terminal is according to predefine mapping matrix Resource selection part mapping matrix B 2, in precoder unit 905 by known pre-coding matrix W, and matrix D and B2, they are multiplied each other according to following order, and it is as follows jointly to construct pre-coding matrix:

P′＝DWB2

Transmitting terminal utilizes this pre-coding matrix P '=DWB2 to process the input data, and the output of precoder unit 905 is expressed as:

$y=\mathrm{Px}=\mathrm{DWB}2x$

$=\mathrm{<figure-callout\; id="0"\; label="D\; W"\; filenames="H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}W\left(\begin{array}{ccc}0& 0& 1\\ 0& 0& 0\\ 1& 0& 0\\ 0& 1& 0\end{array}\right)x$

In the time of need to retransmitting for the second time, transmitting terminal is according to predefine mapping matrix Resource selection part mapping matrix B 3, in precoder unit 905 by known pre-coding matrix W, and matrix D and B3, they are multiplied each other according to following order, and it is as follows jointly to construct pre-coding matrix:

P′＝DWB3

Transmitting terminal utilizes this pre-coding matrix P '=DWB3 to process the input data, and the output of precoder unit 305 is expressed as:

$y=\mathrm{Px}=\mathrm{DWB}3x$

$=\mathrm{<figure-callout\; id="0"\; label="D\; W"\; filenames="H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}W\left(\begin{array}{ccc}0& 1& 0\\ 1& 0& 0\\ 0& 0& 0\\ 0& 0& 1\end{array}\right)x$

In the time of need to retransmitting for the third time, transmitting terminal is according to predefine mapping matrix Resource selection part mapping matrix B 4, in precoder unit 905 by known pre-coding matrix W, and matrix D and B4, they are multiplied each other according to following order, and it is as follows jointly to construct pre-coding matrix:

P′＝DWB4

Transmitting terminal utilizes this pre-coding matrix P '=DWB4 to process the input data, and the output of precoder unit 905 is expressed as:

$y=\mathrm{Px}=\mathrm{DWB}4x$

$=\mathrm{<figure-callout\; id="0"\; label="D\; W"\; filenames="H2008102150351E00052.png"\; state="\{\{state\}\}">D</figure-callout>}W\left(\begin{array}{ccc}0& 0& 0\\ 0& 0& 1\\ 0& 1& 0\\ 1& 0& 0\end{array}\right)x$

When needs carry out the 4th time or during more multiple biography, the mapping relations between data retransmission and the antenna are again according to part mapping matrix B 1, part mapping matrix B 2, and part mapping matrix B 3, the order of part mapping matrix B 4 is selected

Need to prove, among the embodiment that more than provides, first pass and retransmission processes in the mapping mode of each use all not identical, but, the invention is not restricted to this, maximum retransmission based on system allows in the selected mapping mode, exists two kinds of different mapping modes to get final product when carrying out the mapping mode of selecting when data transmit and retransmitting at every turn at least.And when reaching maximum retransmission and not needing again to retransmit in the situation of transmission success yet, employed transmission means is also not necessarily consistent with transmission or the retransmission processes in early stage, particularly, can select according to agreement regulation, system configuration and by the selection mode of signaling broadcasting, perhaps, transmitting terminal can carry out the adaptively selected of mapping mode according to the feedback information of receiving terminal.

System embodiment

In the present embodiment, provide a kind of HARQ system for mimo system.

As shown in figure 10, the HARQ system that is used for mimo system according to present embodiment is positioned at transmitting terminal, comprising: module 1000 is set, is used for setting in advance multiple mapping mode, wherein, mapping mode comprises: Complete Mappings mode, part mapping mode; Map unit 1002 is used for when carrying out transfer of data, selects a kind of mapping mode from multiple mapping mode, with data flow to be sent be mapped in a plurality of transmitting antennas partly or entirely; Retransmit map unit 1004, when being used in the situation of bust this, carrying out data re-transmission, from multiple mapping mode, reselect a kind of mapping mode, data flow is mapped to the part or all of of a plurality of transmitting antennas; A plurality of transmitting antennas 1006 are connected to map unit and retransmit map unit, are used for sending the data flow that is mapped on it.

Preferably, module 1000 is set and also is used for setting in advance when carrying out transfer of data or retransmitting use order to mapping mode.In addition, map unit 1002 and retransmit map unit 1004 and can unify and be provided as map unit.

Wherein, map unit 1002 and re-transmission map unit 1004 are selected the mapping mode of the first biography of data or data re-transmission according to one of following rule: (1) agreement regulation, (2) system configuration and selection mode, (3) transmitting terminal of broadcasting by signaling carry out the adaptively selected of mapping mode according to the feedback information of receiving terminal.Particularly, the feedback information of receiving terminal comprises: feeding back ACK/NACK of HARQ, perhaps channel quality (Channel QualityInformation, referred to as CQI) value, the perhaps data-mapping mode of channel condition information (Channel StateInformation is referred to as CSI), receiving terminal suggestion etc.

Maximum retransmission based on system's permission, when carrying out the mapping mode of selecting when data transmit and retransmitting at every turn, in the selected mapping mode, there are at least two kinds of different mapping modes, namely, in the present invention, and do not require that the mapping mode that each transmission uses is not identical.

Preferably, module 1000 is set by the mode that arranges corresponding to the predetermined codes matrix of multiple mapping mode multiple mapping mode is set, wherein, predetermined matrices is stored in the set of matrices.

And, map unit 1002 and remap unit 1004 are by selecting predetermined matrices from set of matrices, and predetermined matrices and the pre-coding matrix of selecting multiplied each other, obtain carrying out selection or the gravity treatment of mapping mode for the mode of the new pre-coding matrix of maps data streams.

Wherein, above-mentioned transmitting terminal or receiving terminal can be for one of following: base station, relay station, subscriber equipment.

By means of the technical scheme of the embodiment of the invention, can improve the transmission reliability of HARQ technology by changing the mapping relations between data retransmission and the antenna, reduce the error rate, improve data transmission efficiency.

Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (21)

1. a mixed automatic retransmission request method that is used for multi-input multi-output system is characterized in that, comprising:

When carrying out transfer of data, transmitting terminal is selected a kind of mapping mode from the multiple mapping mode that sets in advance, data flow to be sent is mapped to the part or all of of a plurality of transmitting antennas, and described data flow is sent to receiving terminal, wherein, described mapping mode comprises: part mapping mode, Complete Mappings mode;

When in the situation of bust this, carrying out data re-transmission, described transmitting terminal reselects a kind of mapping mode from described multiple mapping mode, described data flow is mapped to the part or all of of described a plurality of transmitting antennas, and retransmit described data flow to described receiving terminal, wherein, the processing of selecting or reselect a kind of mapping mode from the described multiple mapping mode that sets in advance is specially:

From multiplying each other corresponding to predetermined matrices of selection and pre-coding matrix the predetermined matrices of every kind of mapping mode of setting in advance, and the new precoding square that obtains that will multiply each other is used for follow-up mapping, wherein, the described predetermined matrices corresponding to described every kind of mapping mode all is stored in the set of matrices.

2. method according to claim 1 is characterized in that, is less than or equal in the quantity of described data flow in the situation of quantity of described a plurality of transmitting antennas, and the part or all of processing that data flow is mapped to a plurality of transmitting antennas is specially:

Predetermined matrices and described pre-coding matrix that described transmitting terminal will be selected from described set of matrices multiply each other, and the new pre-coding matrix that obtains of will multiplying each other is used for whole antennas or the described data flow of part antenna mapping at described a plurality of transmitting antennas.

3. method according to claim 1, it is characterized in that, described set of matrices comprises Complete Mappings set of matrices and part mapping set of matrices, and wherein, described Complete Mappings set of matrices is corresponding to described Complete Mappings mode, the described part mapping mode of described part mapping set of matrices.

4. method according to claim 3 is characterized in that, equals in the quantity of described data flow in the situation of quantity of described a plurality of transmitting antennas, and the part or all of processing that data flow is mapped to a plurality of transmitting antennas is specially:

Predetermined matrices and described pre-coding matrix that described transmitting terminal will be selected from described Complete Mappings set of matrices multiply each other, and the new pre-coding matrix that obtains of will multiplying each other is used for the described data flow of whole antenna mappings at described a plurality of transmitting antennas.

5. method according to claim 3 is characterized in that, in the situation of quantity less than the quantity of described a plurality of transmitting antennas of described data flow, the part or all of processing that data flow is mapped to a plurality of transmitting antennas is specially:

Predetermined matrices and described pre-coding matrix that described transmitting terminal will be selected from described part mapping set of matrices multiply each other, and the new pre-coding matrix that obtains of will multiplying each other is used for the described data flow of part antenna mapping at described a plurality of transmitting antennas.

6. method according to claim 3 is characterized in that, all matrixes in the described Complete Mappings set of matrices all satisfy following condition:

Each Complete Mappings matrix has the capable and M row of M, and it is 1 that there is and only has an element in every delegation, and all the other elements are 0 entirely; Each is shown and only has an element is 1, and all the other elements are 0 entirely; Wherein, M is the transmitting terminal number of antennas, and M 〉=2.

7. method according to claim 3 is characterized in that, all matrixes in the described part mapping set of matrices all satisfy following condition:

Each part mapping matrix has M capable, the L row; It is 1 that every delegation only has at most an element, and all the other elements are zero entirely, perhaps are 0; Each is shown and only has an element is 1, and all the other elements are 0 entirely; Wherein, M is the transmitting terminal number of antennas, and M 〉=2, and L is the number of data streams of encoder output, and 0≤L＜M.

8. each described method in 5 according to claim 1, it is characterized in that, the multiplication rule of complex-field matrix is followed in the processing that described predetermined matrices and described pre-coding matrix are multiplied each other, and, the mode that multiplies each other: P=DAW or for P=DWA, wherein, D and W are described pre-coding matrix, A is the predetermined matrices in the described set of matrices, and P is described new pre-coding matrix, and described transmitting terminal and the same mode that multiplies each other of described receiving terminal employing.

9. method according to claim 1 is characterized in that, is less than or equal in the quantity of described data flow in the situation of quantity of described a plurality of transmitting antennas, and the part or all of processing that data flow is mapped to a plurality of transmitting antennas is specially:

Described transmitting terminal is selected a kind of mapping mode from the set of predefined mapping mode, the described data flow of precoder being exported according to selected mapping mode is mapped to the some or all of of a plurality of transmitting antennas.

10. method according to claim 9 is characterized in that, equals in the quantity of described data flow in the situation of quantity of described a plurality of transmitting antennas, and the processing that data flow is mapped to a plurality of transmitting antennas is specially:

Described transmitting terminal is selected a kind of Complete Mappings mode from the set of described predefined mapping mode, according to selected mapping mode the output stream of precoder is mapped to whole transmitting antennas.

11. method according to claim 9 is characterized in that, in the situation of quantity less than the quantity of described a plurality of transmitting antennas of described data flow, the processing that data flow is mapped to a plurality of transmitting antennas is specially:

Described transmitting terminal is selected a kind of part mapping mode from the set of described predefined mapping mode, according to selected mapping mode the output stream of precoder is mapped to the part transmitting antenna.

12. method according to claim 1, it is characterized in that the mapping mode of the first biography of data or data re-transmission is selected by system according to one of following rule: (1) agreement regulation, (2) system configuration and selection mode, (3) the described transmitting terminal of broadcasting by signaling carry out the adaptively selected of mapping mode according to the feedback information of described receiving terminal.

13. method according to claim 12, it is characterized in that the feedback information of described receiving terminal comprises: the mapping mode of correctly the replying of mixed automatic retransfer request/wrong responses, channel quality indicated value, channel condition information, the suggestion of described receiving terminal or indication.

14. described method is characterized in that according to claim 12, described receiving terminal and described transmitting terminal are predesignated the set of each transmission and each mapping mode that retransmits in the acquiescence mode and are transmitted and each mapping order that retransmits at every turn; The each transmission and the set of each mapping mode that retransmits and at every turn transmission and at every turn the mapping order of re-transmission of the common provisions for negotiations of mode that perhaps relies on described receiving terminal and described transmitting terminal to consult by signaling or message.

15. described method is characterized in that according to claim 12, after described transmitting terminal receives the feedback information of described receiving terminal, selects voluntarily transmission or retransmits employed mapping mode according to feedback information.

16. according to claim 12 or 13 described methods, it is characterized in that, after described transmitting terminal receives the mapping mode of described receiving terminal suggestion or indication, select the mapping mode of described receiving terminal suggestion or indication according to described suggestion or indication.

17. each described method in 7 and 9 to 15 is characterized in that according to claim 1, when the described data flow of mapping, and maximum data flow of mapping on the transmitting antenna in described a plurality of transmitting antennas.

18. each described method in 7 and 9 to 15 is characterized in that according to claim 1, the data flow of described data flow for processing through the multiple-input and multiple-output coding.

19. each described method in 7 and 9 to 15 is characterized in that according to claim 1, described transmitting terminal or described receiving terminal are one of following: base station, relay station, subscriber equipment.

20. each described method in 7 and 9 to 15 according to claim 1, it is characterized in that, maximum retransmission based on system's permission, when carrying out the described mapping mode of selecting when data transmit and retransmitting at every turn, in the selected described mapping mode, there are at least two kinds of different mapping modes.

21. a mixed automatic retransfer Request System that is used for multi-input multi-output system is characterized in that, comprising:

Module is set, is used for setting in advance multiple mapping mode, wherein, described mapping mode comprises: Complete Mappings mode, part mapping mode;

Map unit, be used for when carrying out transfer of data, from described multiple mapping mode, select a kind of mapping mode, with data flow to be sent be mapped in a plurality of transmitting antennas partly or entirely, wherein, from the described multiple mapping mode that sets in advance, select a kind of processing of mapping mode to be specially:

From multiplying each other corresponding to predetermined matrices of selection and pre-coding matrix the predetermined matrices of every kind of mapping mode of setting in advance, and the new precoding square that obtains that will multiply each other is used for follow-up mapping, wherein, the described predetermined matrices corresponding to described every kind of mapping mode all is stored in the set of matrices;

Retransmit map unit, when being used in the situation of bust this, carrying out data re-transmission, from described multiple mapping mode, reselect a kind of mapping mode, described data flow is mapped to the part or all of of described a plurality of transmitting antennas, wherein, the processing that reselects a kind of mapping mode from the described multiple mapping mode that sets in advance is specially:

From multiplying each other corresponding to predetermined matrices of selection and pre-coding matrix the predetermined matrices of every kind of mapping mode of setting in advance, and the new precoding square that obtains that will multiply each other is used for follow-up mapping, wherein, the described predetermined matrices corresponding to described every kind of mapping mode all is stored in the set of matrices;

A plurality of transmitting antennas are connected to described map unit and described re-transmission map unit, are used for sending the data flow that is mapped on it.

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