CN102006150B - Uplink multi-stream feedback mapping method and device and terminal - Google Patents

Abstract

The embodiment of the invention provides an uplink multi-layer feedback mapping method, an uplink multi-layer feedback mapping device and a terminal. The method comprises the following steps of: acquiring an assignment message which comprises a circular shift bit value and a time frequency resource position bit value; according to the circular shift bit value, searching a corresponding demodulation reference symbol corresponding value nDMRS from a mapping relation table, wherein the range of the nDMRS is determined on the value of nPHICH group and 2NSF PHICH according to a least common multiple principle; and acquiring a minimum resource position index IPRB RA lowest-index according to the time frequency resource position bit value, and acquiring a corresponding feedback mapping channel position according to the sum of the nDMRS and IPRB RA lowest-index. The embodiment of the invention also provides the uplink multi-layer feedback mapping device and the terminal comprising the same. The uplink multi-layer feedback mapping method, the uplink multi-layer feedback mapping device and the terminal, which are provided by the embodiment of invention, can effectively solve the problem of feedback mapping conflict.

Description

Method, device and the terminal of the mapping of up multithread feedback

Technical field

The embodiment of the invention relates to communication technical field, method, device and the terminal of the mapping of particularly a kind of up multithread feedback.

Background technology

Multiple-input and multiple-output (Multi Input Multi Output; Hereinafter to be referred as: MIMO) technology is the important breakthrough of wireless mobile communications field intelligent antenna technology, and this technology can improve the capability of communication system and the availability of frequency spectrum exponentially under the situation that does not increase bandwidth.The transmitting terminal of mimo system and receiving terminal are provided with many antennas; When transmission signals; Transmitting terminal can adopt the mode of space division multiplexing (SM); A plurality of separate signal are gone out through the distinct transmit antenna transmission, and said receiving terminal can receive signal from different reception antennas, and from the said signal that receives, obtains the signal of transmitting terminal emission.

Mix automatic retransmission technique (Hybrid automatic repeat request; Hereinafter to be referred as: HARQ) in existing system, be widely used; Be to receive corresponding packet, feed back accepting state to transmitting terminal: correct or wrong (ACK or NAK) through specific feedback channel by receiving terminal.If the receiving terminal feedback receives mistake, then transmitting terminal can carry out the re-transmission of packet, and correct if the receiving terminal feedback receives, then transmitting terminal need not done any processing.

In mimo system; Transmitting terminal can adopt single codeword (single-codeword; Hereinafter to be referred as: SCW) with many code word (multi-codeword; Hereinafter to be referred as: MCW) mode of two kinds of space division multiplexings is sent signal, said single codeword mode be meant transmitting terminal to a plurality of signals that will send form one tunnel code word (codeword), and adopt identical code modulation mode to carry out coded modulation and send; Many code words mode be meant transmitting terminal to a plurality of signals that will send form two-way or multichannel code word, and adopt two kinds or two or more code modulation modes to carry out coded modulation and send.According to the existing LTE standard, the code word after the two-way coded modulation can be mapped to 2 layer, 3 layer or 4 layer.

In LTE standard formulation process; Up is adopted 1 transmitting antenna, the therefore up realization of only supporting single codeword, and this moment is to the single codeword of transmitting terminal; Receiving terminal only needs the accepting state of feedback code word: correct or mistake, and trigger the re-transmission of single codeword thus; In the LTE agreement, be called the PHICH channel to the descending HARQ feedback channel of upstream data, it is with shown in the following formula of concrete mapping relations that sends data:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

N wherein _PHICH ^GroupBe the parameter relevant with system bandwidth, its concrete computational methods can be obtained by following formula, under the situation of normal cyclic prefix

And N _SF ^PHICHValue be 4, under the situation of extended cyclic prefix, get

And N _SF ^PHICHValue be 2, N wherein _gBy the high level configuration, its possible span is: N _g=1/6,1/2,1,2}.And N _RB ^DLThe Resource Block that takies for the system bandwidth of correspondence (Resource Block, hereinafter to be referred as: RB) number, I _{PRB_RA} ^Lowest_indexAnd n _DMRSBe to obtain through the assignment message PDCCH format 0 that receives by the terminal, I wherein _{PRB_RA} ^Lowest_indexBe used for indicating the indication timing index of the minimum RB of resource frequently, n _DMRSBe the threshold value of 3bit, be used for representing 8 kinds of different values, shown in the following form of its concrete corresponding relation:

The cyclic shift bit value	n DMRS
		000	0
001	1
		010	2
011	3
		100	4
101	5
		110	6
111	7

Above-mentioned form is used for confirming the position (feedback position) of PHICH and the relation of institute's corresponding data, and for example in mode of frequency division duplexing (FDD) system of 10M, the Ng of configuration is 1, I _PHICHValue get 0 (I when TDD mode TDD _PHICHDesirable 1), and the number of Resource Block RB is 100 under the 10M bandwidth, then can calculate according to above-mentioned formula:

Promptly represent N under the current system _PHICH ^GroupNumber be 13, and each N _PHICH ^GroupUnder the configuration of normal cyclic prefix, comprise 8 ACKCH resources, wherein the corresponding feedback of each ACKCH.

For a definite user, its I _{PRB_RA} ^Lowest_indexValue for what confirm, for example can get 25, under the configuration of normal cyclic prefix, N _SF ^PHICHValue get 4, n _DMRSGot respectively 0,1,2,3,4,5,6,7 o'clock, it is right, as shown in the table to get different pair according to above-mentioned computing formula calculating:

n DMRS	(n PHICH group，n PHICH seq)
		0	(12，1)
1	(0，2)
		2	(1，3)
3	(2，4)
		4	(3，5)
5	(4，6)
		6	(5，7)
7	(6，0)

Can find out, work as n _DMRSWhen getting different values, (the n that obtains according to above-mentioned computing formula _PHICH ^Group, n _PHICH ^Seq) be that different pair is right, can not produce conflict this moment.The value of concrete 3bits; Except the calculating of participating in the ACKCH position; Its physical meaning is used to participate in pilot tone to be estimated, in the existing communication system, the known array through ad-hoc location (pilot frequency locations) carries out channel estimating; Known array can pass through identical basic sequence, and different cyclic shifts obtain.This time-base sequence is known, can confirm different cyclic shifts to make things convenient for channel estimating through the 3bits in the assignment message, and the relation such as the following table of 3bits and cyclic shift are indicated:

The cyclic shift bit value	n DMRS (2)
		000	0
001	6
		010	3
011	4
		100	2
101	8
		110	10
111	9

The LTE of prior art only supports single codeword SCW when carrying out transmitting uplink data, promptly each only sends a packet constantly, and the ACK feedback resources that obtains through above-mentioned computing formula only needs one.And when doing channel estimating; Owing to be SCW; According to code word codeword in the existing LTE to the mapping mechanism of layer (stream); Only can have a layer, this layer confirms the cyclic shift that it is corresponding through the 3bits in the assignment message and is used for the generation and the channel estimating of pilot frequency sequence.Can find out; Because the up single codeword SCW that only supports of LTE; Therefore can only just can indicate the cyclic shift of unique layer and be used for channel estimating through the threshold value of 3bits; And as four layer of the up support of LTE; Then need four different cyclic shifts to indicate, this moment, the realization of different cyclic shift indications was to represent (promptly indicating through many bit) through bigger threshold value DMRS, possibly produce different DMRS values is mapped to identical ACK according to the mapping formula situation.

For example comprise 6 Resource Block in system bandwidth, the value of Ng gets 1, is configured to normal cyclic prefix, and DMRS representes with 4bits, gets a certain specific user's I _{PRB_RA} ^Lowest_indexBe 25, N _SF ^PHICHValue get 4, n then _DMRSWhen getting 0 arbitrary value in 15 respectively, calculate (n according to above-mentioned computing formula _PHICH ^Group, n _PHICH ^Seq) pair that obtains is to as shown in the table:

n DMRS	(n PHICH group，n PHICH seq)
		0	(0，1)
1	(0，2)
		2	(0，3)
3	(0，4)
		4	(0，5)
5	(0，6)
		6	(0，7)
7	(0，0)
		8	(0，1)
9	(0，2)
		10	(0，3)
11	(0，4)
		12	(0，5)
13	(0，6)
		14	(0，7)
15	(0，0)

Can find out by above data, according to n _DMRS(the n that calculates _PHICH ^Group, n _PHICH ^Seq) conflict has taken place, promptly work as n _DMRSValue get 0 and (the n that obtained at 8 o'clock _PHICH ^Group, n _PHICH ^Seq) be (0,1), so have the problem that when the DMRS threshold value is indicated with many bit, has feedback mapping conflict in the prior art.

Summary of the invention

The embodiment of the invention provides method, device and the terminal of a kind of up multithread feedback mapping, can effectively solve feedback mapping collision problem of the prior art.

The embodiment of the invention provides the method for a kind of up multithread feedback mapping, comprising:

Obtain the assignment message that comprises cyclic shift bit value and running time-frequency resource position bit value;

From the mapping relations table, search corresponding demodulation reference mark respective value according to said cyclic shift bit value, the span of said demodulation reference mark respective value is confirmed according to the least common multiple principle for the value of the feedback channel number respectively feeding back the mapping group under the feedback channel mapping group number that comprises according to system and the different Cyclic Prefix and comprise; And obtain the least resource location index according to said running time-frequency resource position bit value;

Obtain corresponding feedback mapping channel position according to said demodulation reference mark respective value and least resource location index.

The embodiment of the invention also provides the device of a kind of up multithread feedback mapping, comprising:

First acquisition module is used to obtain the assignment message that comprises cyclic shift bit value and running time-frequency resource position bit value;

Enquiry module; Be used for searching corresponding demodulation reference mark respective value according to said cyclic shift bit value from the mapping relations table, the span of said demodulation reference mark respective value is confirmed according to the least common multiple principle for the value of the feedback channel number respectively feeding back the mapping group under the feedback channel mapping group number that comprises according to system and the different Cyclic Prefix and comprise; And obtain the least resource location index according to said running time-frequency resource position bit value;

The mapping relations table is used to store the corresponding relation of cyclic shift bit value and demodulation reference mark respective value value;

Second acquisition module is used for obtaining corresponding feedback mapping channel position according to said demodulation reference mark respective value and least resource location index.

The embodiment of the invention also provides a kind of terminal, comprises the device of above-mentioned up multithread feedback mapping.

Corresponding n can be searched according to said cyclic shift bit value in method, device and the terminal of the up multithread feedback mapping that the embodiment of the invention provides from the mapping relations table _DMRSValue, said n _DMRSSpan be according to N _PHICH ^GroupAnd 2N _SF ^PHICHValue confirm according to the least common multiple principle, can effectively solve feedback mapping collision problem of the prior art.

Description of drawings

Fig. 1 is the schematic flow sheet of the method embodiment of the up multithread feedback of the present invention mapping;

Fig. 2 concerns sketch map for running time-frequency resource position bit value in the example of the present invention and least resource location index;

Fig. 3 is a mapping relations hoist pennants one in the embodiment of the invention;

Fig. 4 is a mapping relations hoist pennants two in the embodiment of the invention;

Fig. 5 is a mapping relations hoist pennants three in the embodiment of the invention;

Fig. 6 is a mapping relations hoist pennants four in the embodiment of the invention;

Fig. 7 is the schematic flow sheet of the device embodiment of the up multithread feedback of the present invention mapping.

Embodiment

Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.

In order to solve in the prior art in the problem of carrying out existing when up multithread feedback is shone upon feedback mapping conflict; The embodiment of the invention provides the method for a kind of up multithread feedback mapping; Fig. 1 is the schematic flow sheet of the method embodiment of the up multithread feedback of the present invention mapping; As shown in Figure 1, comprise the steps:

Step 101, obtain the assignment message that comprises cyclic shift bit value and running time-frequency resource position bit value;

Step 102, from the mapping relations table, search corresponding n according to said cyclic shift bit value _DMRSValue, n _DMRSBe the demodulation reference mark respective value, i.e. Demodulation reference symbol respective value; Said n _DMRSSpan be according to N _PHICH ^GroupAnd 2N _SF ^PHICHValue confirm N according to the least common multiple principle _PHICH ^GroupThe number of the feedback channel mapping group that comprises for current system; 2N _SF ^PHICHThe number of the feedback channel that comprises for each feedback mapping group under different Cyclic Prefix; Above-mentioned least common multiple principle is meant gets N _PHICH ^GroupAnd 2N _SF ^PHICHLeast common multiple and make n _DMRSValue less than this least common multiple, N _PHICH ^GroupAnd 2N _SF ^PHICHLeast common multiple utilize formula can be expressed as LCM (N _PHICH ^Group, 2N _SF ^PHICH), the n in this step _DMRSSpan less than LCM (N _PHICH ^Group, 2N _SF ^PHICH), and obtain least resource location index I according to running time-frequency resource position bit value _{PRB_RA} ^Lowest_index

Step 103, according to said n _DMRSAnd I _{PRB_RA} ^Lowest_indexObtain corresponding feedback mapping channel position.

After getting access to the cyclic shift bit value, from the mapping relations table, search corresponding n in the present embodiment according to these data _DMRSValue, n _DMRSThe span of value is less than LCM (N _PHICH ^Group, 2N _SF ^PHICH), promptly less than N _PHICH ^GroupAnd 2N _SF ^PHICHLeast common multiple, can effectively solve the problem of up multithread feedback mapping conflict.

Obtain least resource location index I according to running time-frequency resource position bit value in the above-mentioned steps 102 _{PRB_RA} ^Lowest_indexThe time, can be with reference to figure 2, the bandwidth of current system is 5 Resource Block RB among Fig. 2; Carry out this resource assignation with 4bits, for example working as time-frequency resource location bit value is 0001, and then decimalize is 1; Node 1 in the corresponding diagram 2, node 1 corresponding RB is (10,11; 12,14), can confirm that then the least resource location index is 10.And for example running time-frequency resource position bit value is 0101, and then changing into and being counted as decimal number is 5, the node 5 in the corresponding diagram 2, and node 5 corresponding RB are (12,14,15), can confirm that then the least resource location index is 12.

In the above-mentioned steps 103 according to n _DMRSWhen value was confirmed feedback mapping channel position, the sequence number of the group number of feedback channel and place group was confirmed by following formula:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Two formula by above-mentioned can be found out group number n _PHICH ^GroupSequence number n with the place group _PHICH ^SeqBe according to n _DMRSValue calculates, at I _{PRB_RA} ^Lowest_indexUnder the prerequisite of confirming, work as n _DMRSValue when changing, n _PHICH ^GroupAnd n _PHICH ^SeqValue all change and n _PHICH ^GroupValue be with N _PHICH ^GroupFor loop cycle, n _PHICH ^SeqValue be with 2N _SF ^PHICHValue be loop cycle, so feedback channel location parameter (n _PHICH ^Group, n _PHICH ^Seq) excursion be corresponding N _PHICH ^GroupAnd 2N _SF ^PHICHLeast common multiple, i.e. LCM (N _PHICH ^Group, 2N _SF ^PHICH).At n _DMRSSpan less than LCM (N _PHICH ^Group, 2N _SF ^PHICH) time, can there be collision problem, and at n _DMRSSpan greater than LCM (N _PHICH ^Group, 2N _SF ^PHICH) time, (the N with LCM will take place _PHICH ^Group, 2N _SF ^PHICH) be the conflict in cycle, promptly mention in the prior art, when system bandwidth comprises 6 Resource Block, promptly $N_{\mathrm{RB}}^{\mathrm{DL}}=6,$ N _gValue get 1, by

Calculating can get N _PHICH ^GroupValue be 2, N _SF ^PHICHValue get 4 usually, then can calculate LCM (N _PHICH ^Group, 2N _SF ^PHICH) value be 8, i.e. feedback channel location parameter (n _PHICH ^Group, n _PHICH ^Seq) be that excursion is 8, if n _PHICH ^GroupSpan greater than 8, feedback mapping collision problem then can take place, just pointed problem in the prior art.And in the present embodiment to n _PHICH ^GroupWhen carrying out value, confirm its value, and can generate the mapping relations table, confirm suitable span, can effectively avoid feeding back the problem of mapping conflict according to this value according to the least common multiple principle.

Above-mentioned mapping relations table is that the time division duplex (TDD) or the system of FDD (FDD) confirm by the base station according to the number of the stream of the shared resource number of system bandwidth, up support and system.

Below be to confirm n according to the least common multiple principle _PHICH ^GroupThe specific embodiment of span, for example consider the FDD system, when the value of DMRS is indicated with 6bits, system bandwidth N _RB ^DLGet 6,15,25,50,75,100 respectively, N _gValue be taken as 1, under the prerequisite of normal cyclic prefix, N _SF ^PHICHValue be 4, N _PHICH ^GroupThe value basis Obtain, at N _RB ^DLValue be 6, N _gBe 1 o'clock N _PHICH ^GroupValue be 2, so N _PHICH ^GroupAnd 2N _SF ^PHICHLeast common multiple be 8, i.e. n when setting up the mapping relations table _DMRSSpan should be less than 8.Concrete mapping relations table can represent like Fig. 3, in Fig. 3 according to N _PHICH ^GroupAnd 2N _SF ^PHICHLeast common multiple calculate and can get n _DMRSSpan be 0 to 7, the resource block number that comprises in system bandwidth is 15 or 25 o'clock, also can obtain n through calculating _DMRSSpan be 0 to 7, the mapping relations table of foundation is with shown in Figure 3 identical.

At N _RB ^DLValue be 50, N _gBe N under 1 the situation _PHICH ^GroupValue be 7, so N _PHICH ^GroupAnd 2N _SF ^PHICHLeast common multiple be 56, i.e. n when setting up the mapping relations table _DMRSSpan should be less than 56.Concrete mapping relations table can be represented like Fig. 4, in Fig. 4, according to N _PHICH ^GroupAnd 2N _SF ^PHICHLeast common multiple calculate and can get n _DMRSSpan be 0 to 55.

At N _RB ^DLValue be 75, N _gBe N under 1 the situation _PHICH ^GroupValue be 10, so N _PHICH ^GroupAnd 2N _SF ^PHICHLeast common multiple be 40, i.e. n when setting up the mapping relations table _DMRSSpan should be less than 40.Concrete mapping relations table can represent like Fig. 5, in Fig. 5 according to N _PHICH ^GroupAnd 2N _SF ^PHICHLeast common multiple calculate and can get n _DMRSSpan be 0 to 39.

At N _RB ^DLValue be 100, N _gBe N under 1 the situation _PHICH ^GroupValue be 26, so N _PHICH ^GroupAnd 2N _SF ^PHICHLeast common multiple be 104, i.e. n when setting up the mapping relations table _DMRSSpan should be less than 104.Concrete mapping relations table can represent like Fig. 6, in Fig. 6, and n _DMRSValue can be from 0 to 103, and be not limited only to shown in the figure.

Mapping relations table in the above-described embodiments can draw, if LCM is (N _PHICH ^Group, 2N _SF ^PHICH) value be M, n _DMRSSupplied value be N.When M＞N, N different n _DMRSCorresponding N different value; When M＜N, N=k*M+T then, wherein k is the positive integer more than or equal to 1, T＜N.For example N be 16 kinds of 4bit indications maybe, M is 10, then corresponding relation as follows form represent:

The cyclic shift bit value	n DMRS
		0000	0
0001	1
		0010	2
0011	3
		0100	4
0101	5
		0110	6
0111	7
		1000	8
1001	9
		1010	0
1011	1
		1100	2
1101	3
		1110	4
1111	5

Mapping relations table in the present embodiment can be generated according to the shared information such as Resource Block number of system bandwidth by the base station; And should feed back mapping table and sent to the terminal; When carrying out the downstream feedback of transmitting uplink data, the terminal obtains n according to the shifted bits value of obtaining from above-mentioned mapping relations table _DMRS, and according to n _DMRSObtain the feedback channel position.

N in the foregoing description _DMRSValue and the relation of cyclic shift bit value be sequence arrangement, i.e. n _DMRSValue according to from small to large sequence arrangement, in addition in above-mentioned mapping relations table, n _DMRSValue also can be out of order arrangement, as long as guarantee n _DMRSValue less than LCM (N _PHICH ^Group, 2N _SF ^PHICH) get final product.In the realization of out of order arrangement, corresponding mapping relations table must issue to guarantee that BS and MS use identical mapping relations.

Sequence arrangement can be through the corresponding n that calculates of cyclic shift bit value implicit expression _DMRSValue.For example the present invention also can adopt the relation of implicit expression mapping, and promptly corresponding mapping relations table does not issue, and obtains corresponding decimal value according to the binary system bit of concrete cyclic shift, and obtains actual value according to decimal value of trying to achieve and least common multiple delivery.

For example: two advance to be worth bit includes 7, is 1110111, if corresponding least common multiple is 56.

The mode of arranging so in order, it is 119 that ten of 1110111 correspondences are advanced value, the n that it is corresponding _DMRSBe 119mod56=7.

Fig. 7 is the structural representation of the device embodiment of the up multithread feedback of the present invention mapping; As shown in Figure 7; The device of up multithread feedback mapping comprises first acquisition module 11, enquiry module 12, mapping relations table 13 and second acquisition module 14, and wherein first acquisition module 11 is used to obtain the assignment message that comprises cyclic shift bit value and running time-frequency resource position bit value; Enquiry module 12 is used for searching corresponding n according to said cyclic shift bit value from the mapping relations table _DMRSValue, said n _DMRSSpan be according to N _PHICH ^GroupAnd 2N _SF ^PHICHValue confirm N wherein according to the least common multiple principle _PHICH ^GroupBe the feedback channel mapping group number that system comprises, 2N _SF ^PHICHFor respectively feeding back the feedback channel number that the mapping group comprises under the different Cyclic Prefix; And obtain least resource location index I according to said running time-frequency resource position bit value _{PRB_RA} ^Lowest_indexMapping relations table 13 is used to store cyclic shift bit value and n _DMRSThe corresponding relation of value; Second acquisition module 14 is used for according to said n _DMRSAnd I _{PRB_RA} ^Lowest_indexObtain corresponding feedback mapping channel position.The device of the up multithread feedback mapping that present embodiment provides, when feeding back mapping, n in the mapping relations table wherein _DMRSFor according to N _PHICH ^GroupAnd N _SF ^PHICHValue confirm according to the least common multiple principle, can effectively solve feedback mapping collision problem.

Cyclic shift bit value and n in the above-mentioned mapping relations table _DMRSValue is sequence arrangement or out of order arrangement.

The embodiment of the invention also provides a kind of terminal, comprises the device of above-mentioned up multithread feedback mapping.

The invention provides method, device and the terminal of above-mentioned up multithread feedback mapping, when the mapping relations table that in utilizing the above embodiment of the present invention, provides feeds back mapping, n wherein _DMRSAccording to N _PHICH ^GroupAnd N _SF ^PHICHObtain n _DMRSValue less than N _PHICH ^GroupAnd 2N _SF ^PHICHLeast common multiple, can make and when carrying out the feedback channel position calculation, obtain unique feedback channel configuration parameter, can effectively solve mutual competitions and conflicts.

What should explain at last is: above embodiment is only in order to technical scheme of the present invention to be described but not limit it; Although the present invention has been carried out detailed explanation with reference to preferred embodiment; Those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, also can not make amended technical scheme break away from the spirit and the scope of technical scheme of the present invention and these are revised or be equal to replacement.

Claims (5)

1. the method for up multithread feedback mapping is characterized in that, comprising:

Obtain the assignment message that comprises cyclic shift bit value and running time-frequency resource position bit value;

From the mapping relations table, search corresponding demodulation reference mark respective value according to said cyclic shift bit value, the span of said demodulation reference mark respective value is confirmed according to the least common multiple principle for the value of the feedback channel number respectively feeding back the mapping group under the feedback channel mapping group number that comprises according to system and the different Cyclic Prefix and comprise; Said least common multiple principle is meant the least common multiple that respectively feeds back the feedback channel number that the mapping group comprises under negate feedback channel Mapping group number and the different Cyclic Prefix and makes said demodulation reference mark respective value less than this least common multiple; And obtain the least resource location index according to said running time-frequency resource position bit value;

Obtain corresponding feedback mapping channel position according to said demodulation reference mark respective value and least resource location index.

2. the method for up multithread feedback according to claim 1 mapping; It is characterized in that said mapping relations table is that TDD system or FDD are confirmed by the base station according to the number of the stream of the shared resource number of system bandwidth, up support and system.

3. the device of up multithread feedback mapping is characterized in that, comprising:

First acquisition module is used to obtain the assignment message that comprises cyclic shift bit value and running time-frequency resource position bit value;

Enquiry module; Be used for searching corresponding demodulation reference mark respective value according to said cyclic shift bit value from the mapping relations table, the span of said demodulation reference mark respective value is confirmed according to the least common multiple principle for the value of the feedback channel number respectively feeding back the mapping group under the feedback channel mapping group number that comprises according to system and the different Cyclic Prefix and comprise; Said least common multiple principle is meant the least common multiple that respectively feeds back the feedback channel number that the mapping group comprises under negate feedback channel Mapping group number and the different Cyclic Prefix and makes said demodulation reference mark respective value less than this least common multiple; And obtain the least resource location index according to said running time-frequency resource position bit value;

The mapping relations table is used to store the corresponding relation of cyclic shift bit value and demodulation reference mark respective value;

Second acquisition module is used for obtaining corresponding feedback mapping channel position according to said demodulation reference mark respective value and least resource location index.

4. the device of up multithread feedback according to claim 3 mapping is characterized in that cyclic shift bit value and demodulation reference mark respective value are sequence arrangement or out of order arrangement in the said mapping relations table.

5. a terminal is characterized in that, comprises the device of the described up multithread feedback of claim 3 mapping.

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