CN101588226B - Terminal in large bandwidth multi-carrier system and a sending method of response message - Google Patents

Abstract

The invention provides a terminal in large bandwidth multi-carrier system and a sending method of response message; the method comprises: in frequency division duplex system polymerized by carrier, when the base station has physical downlink shared channel dispatched to the terminal on multiple downlink component carriers, the number of the transmission block is N, and the terminal does not have physical uplink shared channel on the subframe of the feedback response message, the terminal feedbacks the response message by following means: if the feedback state combination of the current transmission block is one of the conventional combination expressed by using one PUCCH to send b (0) b (1), the terminal selects one PUCCH and determines the value of b (0) b (1) sent by PUCCH according to the mapping rule; or else, the terminal selects two PUCCH and determines the value of b (0) b (1) sent by the two PUCCH according to the mapping rule. Adopting the terminal can keep uplink single-carrier property at maximum and avoid the decline of system throughput performance.

Description

Terminal in a kind of large bandwidth multi-carrier system and the sending method of response message

Technical field

The present invention relates to digital communicating field, particularly relate to the sending method of terminal in a kind of large bandwidth multi-carrier system and response message.

Background technology

The reliability of develop rapidly to data communication of digital communication system is had higher requirement, but under severe channel, especially in high data rate or high-speed mobile environment, multi-path jamming and Doppler frequency shift etc. seriously affect systematic function.Therefore, effective error-control technique, especially mixing automatic repeat request (Hybrid Automatic Repeat Request, HARQ) technology just becomes the focus endeavouring to study in the communications field.

In HARQ mode, the code that transmitting terminal sends can not only error detection, but also has certain error correcting capability.After receiving terminal decoder receives code word, first check error situation, if within the error correcting capability of code, then automatically carry out error correction; If mistake is a lot, exceeded the error correcting capability of code, but can detect that mistake is come, then receiving terminal sends out a decision signal by feedback channel to transmitting terminal, requires transmitting terminal retransmission of information.In an ofdm system, represented by correct response message/error response message (ACK/NACK:Acknowledgement/Negative Acknowledgement) control signal and transmit correct or mistake, and judge whether to need to retransmit with this.

In the descending HARQ of long evolving system (LTE:Long Term Evolution), the ACK/NACK response message of Physical Downlink Shared Channel (PDSCH:Physical Downlink Shared Channel), when terminal (UE:User Equipment) does not have Physical Uplink Shared Channel (PUSCH:Physical Uplink Shared Channel), being that row control channel (PUCCH:PhysicalUplink Control Channel) is upper physically sends.When PDSCH only comprises a transmission block, terminal will feed back the ACK/NACK response message of 1 bit, and when PDSCH comprises two transmission blocks, terminal will feed back the ACK/NACK response message of 2 bits.LTE defines multiple PUCCH format (format), comprise PUCCH format 1/1a/1b and format 2/2a/2b, wherein format 1a and 1b is used for the ACK/NACK response message of feedback 1 bit and the ACK/NACK response message of 2 bits respectively.

At IMT-Advanced (International MobileTelecommunications-Advanced, referred to as IMT-Advanced) in system, the high-speed transfer of data can be realized, and there is larger power system capacity, move at low speed, focus cover, the peak rate of IMT-Advanced system can reach 1Gbit/s, and when high-speed mobile, wide area cover, the peak rate of IMT-Advanced system can reach 100Mbit/s.

In order to meet senior International Telecommunication Union (International TelecommunicationUnion-Advanced, referred to as ITU-Advanced) requirement, as senior Long Term Evolution (the Long Term Evolution Advanced of the evolution standard of LTE, referred to as LTE-A) system needs to support larger system bandwidth (reaching as high as 100MHz), and needs the existing standard of backward compatibility LTE.On the basis of existing LTE system, the bandwidth of LTE system can be carried out merging and obtain larger bandwidth, this technology is called carrier aggregation (Carrier Aggregation, referred to as CA) technology, this technology can improve IMT-Advance system the availability of frequency spectrum, to alleviate frequency spectrum resource in short supply, and then optimizes the utilization of frequency spectrum resource.

After introducing carrier aggregation, current about in the discussion of downlink component carrier and PDSCH transmission block and HARQ process relation, a groundwork supposition is when not adopting space division multiplexing, a corresponding PDSCH transmission block of downlink component carrier and a HARQ process, that is, UE needs a PDSCH transmission block for each component carrier to feed back the ACK/NACK response message of 1 bit.And when adopting space division multiplexing, LTE-A current regulations, supports 2 transmission blocks at most.Therefore, when adopting space division multiplexing, UE needs 2 PDSCH transmission blocks for each downlink component carrier to feed back the ACK/NACK response message of 2 bits.

In lte-a system after have employed spectrum aggregating technology, upstream bandwidth and downlink bandwidth just can comprise multiple component carrier.When there is the PDSCH dispatched to certain UE base station on multiple downlink component carrier, and when UE does not have PUSCH to send at present sub-frame, terminal needs the ACK/NACK response message feeding back the PDSCH transmission of this multiple downlink component carrier on PUCCH.A kind of direct method is exactly on the multiple PUCCHs corresponding with multiple downlink component carrier, adopts with the identical mode of LTE, feeds back multiple ACK/NACK response message respectively.This Measures compare is simple, can be good at keeping the compatibility with LTE, but has multiple PUCCH to transmit due to up simultaneously, destroy uplink single-carrier property, when UE power limited, the detection perform of ACK/NACK will be affected, or cause up covering performance to decline.To this, different company proposes a lot of method, feeds back after carrying out bundling operation (namely logic and operation) to the ACK/NACK response message of multiple descending carrier on single PUCCH.Because the channel difference of each carrier wave may be larger, therefore, make throughput degradation problem more serious to the method for the ACK/NACK response message binding feedback of multiple descending carrier.

In addition, also have a kind of method of Channel assignment, the core concept of the method is exactly utilize modulation symbols different on different PUCCH and this channel to represent the different feedback states of all carrier waves.The method owing to only feeding back on a PUCCH, and therefore there is not the problem destroying single-carrier property, avoid the throughput degradation problem that binding method brings, therefore the method is subject to the support of multiple company simultaneously.

For the multicarrier ACK/NAK feedback method of Channel assignment, when PDSCH transmission adopts space division multiplexing pattern, then need for each transmission block feeds back an ACK/NACK response message.In LTE-TDD, when adopting the mode of Channel assignment to feed back the ACK/NACK response message of multiple descending sub frame, need first to carry out bindings (situation for space division multiplexing) to the ACK/NACK response message of the transmission block of each descending sub frame, each descending sub frame only feeds back the response message after a binding, and then according to the state of the ACK/NACK response message after each subframe binding, select the modulation symbol of corresponding PUCCH and correspondence to feed back.If this thought is applied in the feedback of multiple ACK/NACK response message in carrier aggregation, then for FDD (Frequency Division Duplexing (FDD)) system, when PDSCH adopts the mode of space division multiplexing to transmit, terminal, when carrying out HARQ-ACK feedback, needs to carry out bindings to the ACK/NACK response message of the transmission block of two on component carrier.Processing mode in this and LTE-FDD is different, the ACK/NACK response message of LTE-FDD to two of subframe transmission blocks is not bound, but adopting PUCCH format 1b to feed back, the QPSK modulation symbol of format1b, carries the ACK/NACK response message of two transmission blocks.

Summary of the invention

The technical problem to be solved in the present invention is to provide the sending method of terminal in a kind of large bandwidth multi-carrier system and response message, farthest can keep uplink single-carrier property, and avoid the decline of throughput of system performance.

In order to solve the problem, the invention provides the sending method of response message in a kind of large bandwidth multi-carrier system, comprise: in the frequency division duplex system of carrier aggregation, when there is scheduling base station to the Physical Downlink Shared Channel PDSCH of terminal on multiple downlink component carrier, the quantity of transmission block is N, and described terminal when not having a Physical Uplink Shared Channel in the subframe of feeding back response information, described terminal feeding back response information in such a way:

Transmission block feedback states as current is combined as the one sent with 1 PUCCH in the combination that b (0) b (1) represents of agreement, and terminal is selected 1 PUCCH by mapping ruler and determined the value of b (0) b (1) of transmission this PUCCH on; Otherwise terminal is selected 2 PUCCH by mapping ruler and is determined b (0) b (1) of transmission on these two PUCCH.

Further, when the response message of each transmission block is correct reception ACK entirely, described mapping ruler is, selects any 1 PUCCH to send b (0) b (1) and represent that current transmission block feedback states combines from N number of PUCCH.

Further, when the quantity that response message in each transmission block is ACK be 1 or N-1 time, described mapping ruler is, the transmission block feedback states combination selecting arbitrarily 1 PUCCH to send b (0) b (1) from N number of PUCCH to represent current, the combination of selected PUCCH and the b sent thereon (0) b (1) with transmission block feedback states combine be ACK full time different.

Further, when the quantity that response message in each transmission block is ACK is greater than 1 and is not equal to m, described mapping ruler is, selects 2 PUCCH arbitrarily and send b (0) b (1) at each PUCCH to represent that current transmission block feedback states combines from N number of PUCCH;

When N is even number, described in when N is odd number, described in or represent that N/2 rounds downwards.

Further, the quantity being ACK when response message in each transmission block is or time, described mapping ruler is,

From N number of PUCCH, select any 1 PUCCH to send b (0) b (1) represent the combination of current transmission block feedback states, different the combination of selected PUCCH and the b sent thereon (0) b (1) is combined as quantity n=1, n=N-1 and n=N of ACK during with transmission block feedback states;

If also have the combination of transmission block feedback states not to be expressed, then arbitrarily select 2 PUCCH and send b (0) b (1) at each PUCCH to represent that remaining transmission block feedback states combines from N number of PUCCH, different when the combination of selected PUCCH and the b sent thereon (0) b (1) is greater than 1 with the quantity that transmission block feedback states is combined as ACK and is not equal to m.

Further, as selection 2 PUCCH, and when all sending the feedback states combination of b (0) b (1) expression transmission block on each PUCCH, described mapping ruler meets, if the response message of 2 of same component carrier transmission blocks is garbled-reception NACK, then avoid selecting 2 of described component carrier PUCCH that transmission block is corresponding to feed back.

The present invention also provides the terminal in a kind of large bandwidth multi-carrier system:

Terminal receives N number of transmission block of Physical Downlink Shared Channel PDSCH on multiple downlink component carrier, and when there is no Physical Uplink Shared Channel in the subframe of feeding back response information, feeding back response information in such a way:

Transmission block feedback states as current is combined as the one sent with 1 PUCCH in the combination that b (0) b (1) represents of agreement, and terminal is selected 1 PUCCH by mapping ruler and determined the value of b (0) b (1) of transmission this PUCCH on; Otherwise terminal is selected 2 PUCCH by mapping ruler and is determined b (0) b (1) of transmission on these two PUCCH.

Further, when the response message of each transmission block is correct reception ACK entirely, described mapping ruler is, selects any 1 PUCCH to send b (0) b (1) and represent that current transmission block feedback states combines from N number of PUCCH.

Further, when the quantity that response message in each transmission block is ACK be 1 or N-1 time, described mapping ruler is, the transmission block feedback states combination selecting arbitrarily 1 PUCCH to send b (0) b (1) from N number of PUCCH to represent current, the combination of selected PUCCH and the b sent thereon (0) b (1) with transmission block feedback states combine be ACK full time different.

Further, when the quantity that response message in each transmission block is ACK is greater than 1 and is not equal to m, described mapping ruler is, selects 2 PUCCH arbitrarily and send b (0) b (1) at each PUCCH to represent that current transmission block feedback states combines from N number of PUCCH;

When N is even number, described in when N is odd number, described in or represent that N/2 rounds downwards.

Further, the quantity being ACK when response message in each transmission block is or time, described mapping ruler is,

From N number of PUCCH, select any 1 PUCCH to send b (0) b (1) represent the combination of current transmission block feedback states, different the combination of selected PUCCH and the b sent thereon (0) b (1) is combined as quantity n=1, n=N-1 and n=N of ACK during with transmission block feedback states;

If also have the combination of transmission block feedback states not to be expressed, then arbitrarily select 2 PUCCH and send b (0) b (1) at each PUCCH to represent that remaining transmission block feedback states combines from N number of PUCCH, different when the combination of selected PUCCH and the b sent thereon (0) b (1) is greater than 1 with the quantity that transmission block feedback states is combined as ACK and is not equal to m.

Further, as selection 2 PUCCH, and when all sending the feedback states combination of b (0) b (1) expression transmission block on each PUCCH, described mapping ruler meets, if the response message of 2 of same component carrier transmission blocks is garbled-reception NACK, then avoid selecting 2 of described component carrier PUCCH that transmission block is corresponding to feed back.

In sum, terminal in a kind of large bandwidth multi-carrier system provided by the invention and the sending method of response message, can correctly feed back for the feedback states of transmission block on all downlink component carriers, thus the decline of throughput of system performance can not be caused, and use 1 PUCCH sends the feedback states that 2 Bit datas represent response message as far as possible, farthest maintains uplink single-carrier property.

Accompanying drawing explanation

Fig. 1 is the schematic flow sheet of terminal feedback response message of the present invention;

Fig. 2 is the schematic diagram of embodiment of the present invention mapping ruler.

Embodiment

The present invention proposes the sending method of terminal in a kind of large bandwidth multi-carrier system and response message, in the frequency division duplex system of carrier aggregation, when there is scheduling base station to the PDSCH of terminal on multiple downlink component carrier, the quantity of transmission block is N, and terminal when not having a PUSCH in the subframe of feeding back response information, terminal is feeding back response information in such a way:

Transmission block feedback states as current is combined as the one sent with 1 PUCCH in the combination that b (0) b (1) represents of agreement, and terminal is selected 1 PUCCH by mapping ruler and determined the value of b (0) b (1) of transmission this PUCCH on; Otherwise terminal is selected 2 PUCCH by mapping ruler and is determined b (0) b (1) of transmission on these two PUCCH.

The present embodiment provides the terminal in a kind of large bandwidth multi-carrier system, and terminal receives N number of transmission block of PDSCH on multiple downlink component carrier, and when there is no PUSCH in the subframe of feeding back response information, feeding back response information in such a way:

Transmission block feedback states as current is combined as the one sent with 1 PUCCH in the combination that b (0) b (1) represents of agreement, and terminal is selected 1 PUCCH by mapping ruler and determined the value of b (0) b (1) of transmission this PUCCH on; Otherwise terminal is selected 2 PUCCH by mapping ruler and is determined b (0) b (1) of transmission on these two PUCCH.

When the response message of each transmission block is correct reception ACK entirely, above-mentioned mapping ruler is, selects any 1 PUCCH to send b (0) b (1) and represent that current transmission block feedback states combines from N number of PUCCH.

When the quantity that response message in each transmission block is ACK be 1 or N-1 time, above-mentioned mapping ruler is, the transmission block feedback states combination selecting arbitrarily 1 PUCCH to send b (0) b (1) from N number of PUCCH to represent current, the combination of selected PUCCH and the b sent thereon (0) b (1) with transmission block feedback states combine be ACK full time different.

When the quantity that response message in each transmission block is ACK is greater than 1 and is not equal to m, above-mentioned mapping ruler is, selects 2 PUCCH arbitrarily and send b (0) b (1) at each PUCCH to represent that current transmission block feedback states combines from N number of PUCCH; When N is even number, when N is odd number, or represent that N/2 rounds downwards.

The quantity being ACK when response message in each transmission block is or time, above-mentioned mapping ruler is,

From N number of PUCCH, select any 1 PUCCH to send b (0) b (1) represent the combination of current transmission block feedback states, different the combination of selected PUCCH and the b sent thereon (0) b (1) is combined as quantity n=1, n=N-1 and n=N of ACK during with transmission block feedback states; If also have the combination of transmission block feedback states not to be expressed, then arbitrarily select 2 PUCCH and send b (0) b (1) at each PUCCH to represent that remaining transmission block feedback states combines from N number of PUCCH, different when the combination of selected PUCCH and the b sent thereon (0) b (1) is greater than 1 with the quantity that transmission block feedback states is combined as ACK and is not equal to m.

As selection 2 PUCCH, and when all sending the feedback states combination of b (0) b (1) expression transmission block on each PUCCH, above-mentioned mapping ruler meets, if the response message of 2 of same component carrier transmission blocks is garbled-reception NACK, then avoid selecting 2 of this component carrier PUCCH that transmission block is corresponding to feed back.

The present embodiment provides the sending method of response message in a kind of large bandwidth multi-carrier system, suppose in the FDD system of carrier aggregation, there is scheduling base station to the PDSCH of certain UE on M downlink component carrier, assuming that have N number of transmission block in M component carrier (when the PDSCH of the component carrier had adopts the mode of space division multiplexing to transmit, N > M, when not having the PDSCH of component carrier to adopt the mode of space division multiplexing to transmit, N=M), then UE needs the ACK/NACK response message feeding back this N number of transmission block, here suppose that available PUCCH number is N, UE, when carrying out ACK/NACK response message feedback, as shown in Figure 1, adopts following steps:

(1) UE adds up response message in this N number of transmission block is the total n of ACK;

(2) UE selects 1 or 2 PUCCH to feed back according to different n values according to mapping ruler from N number of available PUCCH, each PUCCH sends b (0) b (1) and represents the combination of transmission block feedback states.

The total n of the ACK response message of N number of transmission block feedback can be 1 ... N, as n=0, that all transmission blocks feed back is all NACK, and the component carrier of now likely all polymerizations all lost, and UE end does not need feedback.

Transmission block feedback states as current is combined as the one sent with 1 PUCCH in the combination that b (0) b (1) represents of agreement, and terminal is selected 1 PUCCH by mapping ruler and determined the value of b (0) b (1) of transmission this PUCCH on; Otherwise terminal is selected 2 PUCCH by mapping ruler and is determined b (0) b (1) of transmission on these two PUCCH.

The mapping ruler arranged can be divided into following 4 kinds, as shown in Figure 2:

(1) when the sum of the ACK response message that N number of transmission block feeds back is N, what corresponding N number of transmission block fed back is ACK response message entirely, selects arbitrarily 1 PUCCH to send b (0) b (1) from available PUCCH;

(2) as total n=1 or n=N-1 of the ACK response message that N number of transmission block feeds back, what corresponding N number of transmission block fed back only has 1 for ACK response message or only has 1 for NACK response message, these feedback states all select arbitrarily 1 PUCCH to send b (0) b (1) from available PUCCH, the combination of selected PUCCH and the b sent thereon (0) b (1) with transmission block feedback states combine be ACK full time different;

From N number of PUCCH, select arbitrarily 1 PUCCH to send b (0) b (1) can 4C be represented _n ¹(i.e. 4N) plants the combination of transmission block feedback states, and 2N kind wherein combines transmission block feedback states combination when can represent n=1 and n=N-1.

(3) as the total n > 1 of the ACK response message of N number of feedback, and during n ≠ m, from available PUCCH, select 2 PUCCH arbitrarily and send b (0) b (1) at each PUCCH, representing that these transmission block feedback states combine; When N is even number, when N is odd number, or represent that N/2 rounds downwards.

(4) as the total n=m of ACK response message:

From N number of PUCCH, select any 1 PUCCH to send b (0) b (1) represent the combination of current transmission block feedback states, different the combination of selected PUCCH and the b sent thereon (0) b (1) is combined as quantity n=1, n=N-1 and n=N of ACK during with transmission block feedback states;

If also have the combination of transmission block feedback states not to be expressed, then arbitrarily select 2 PUCCH and send b (0) b (1) at each PUCCH to represent that remaining transmission block feedback states combines from N number of PUCCH, different when the combination of selected PUCCH and the b sent thereon (0) b (1) is greater than 1 with the quantity that transmission block feedback states is combined as ACK and is not equal to m.

For above-mentioned rule (3) and rule (4), if 2 of component carrier transmission blocks all feed back NACK response message, so this component carrier is likely lost, and should avoid the PUCCH corresponding to transmission block of this component carrier during selective channel; Because the available number of channel is many, so under the FDD system of carrier aggregation, from available channel, select 1, maximum 2 PUCCH can represent all 2 ⁿ-a kind of feedback states;

The present invention is further illustrated below by embody rule example

Application example one:

Suppose M=4, N=4, M is the quantity of component carrier, N is the quantity of transmission block, namely a transmission block is only had in each component carrier, UE adds up the ACK response message sum n of these 4 transmission block feedbacks, and according to n value Choose for user rule, (4 available PUCCH are n to mapping ruler as shown in Figure 2 _{pUCCH, 0} ⁽¹⁾, n _{pUCCH, 1} ⁽¹⁾... n _{pUCCH, 3} ⁽¹⁾):

If (a) ACK response message add up to 4, map according to mapping ruler (1), namely 4 transmission blocks feedback is ACK response message entirely, in 4 available PUCCH, select any 1 PUCCH to send b (0) b (1).

Such as: if the response message of 4 transmission blocks feedback is followed successively by ACK, ACK, ACK, ACK, so in these 4 available PUCCH, n is selected _{pUCCH, a} ⁽¹⁾(wherein $\∀a\∈\left\{\mathrm{0,1,2,3}\right\}$ ) send b (0) b (1);

If the total n=1 or 3 of (b) ACK response message, map according to mapping ruler (2), that is these 4 transmission block feedbacks has 1 to be ACK response message or has 1 to be NACK response message, for n=1, from 4 available PUCCH, select any 1 PUCCH to send b (0) b (1), for n=3, from 4 available PUCCH, select any 1 PUCCH to send b (0) b (1), can be select the PUCCH identical with n=1 to send different b (0) b (1).

In this embodiment, n=1 and n=3 situation all have 4 kinds, select 1 PUCCH to send b (0) b (1) and represent the combination that these feedback needs 8 kinds are different.

Such as: if the response message of 4 transmission block feedbacks is followed successively by NACK, NACK, ACK, NACK, the i.e. response message ACK of the 3rd transmission block feedback, then the PUCCH that this transmission block can be selected corresponding sends b (0) b (1), namely selects PUCCHn _{pUCCH, 2} ⁽¹⁾if the response message of 4 transmission block feedbacks is followed successively by ACK, ACK, NACK, ACK, also can select PUCCHn _{pUCCH, 2} ⁽¹⁾, just b (0) b (1) of transmission and different during n=1.

If the total n=2 of (c) ACK response message, because of correspondence mappings rule (4), because use 1 PUCCH to send b (0) b (1), one has $C_4^1\×4=16$ Plant combination, a the situation of () and (b) employs 9 kinds altogether, and transmission block feedback states combination during n=2 only has 6 kinds, combine so 1 PUCCH only need be selected to send transmission block feedback states when b (0) b (1) just can represent n=2.

Application example two:

Suppose M=4, N=5 (have two transmission blocks in first component carrier, only have a transmission block in each component carrier below), 2 ⁿ=32, be greater than $C_N^1\×4=4N=20,$ Therefore, only send with 1 PUCCH the feedback states that 2 Bit datas can not represent all response messages, wherein partial feedback state needs to send 2 Bit datas to represent with 2 PUCCH.

UE adds up the ACK response message sum n of these 5 transmission block feedbacks, and according to n value Choose for user rule, (5 available PUCCH are n to mapping ruler as shown in Figure 2 _{pUCCH, 0} ⁽¹⁾, n _{pUCCH, 1} ⁽¹⁾... n _{pUCCH, 4} ⁽¹⁾):

If the sum of (a) ACK response message 5 (mapping according to mapping ruler (1)) that is these 5 transmission blocks feedbacks be ACK response message entirely, in 5 available PUCCH, select any 1 PUCCH to send b (0) b (1).

Such as: if the response message of 5 transmission block feedbacks is followed successively by ACK, ACK, ACK, ACK, (the first two ACK response message is from the different transmission blocks of same component carrier for ACK, 3 ACK response messages next are respectively from different component carriers), so in these 5 available PUCCH, select n _{pUCCH, a} ⁽¹⁾(wherein $\∀a\∈\left\{\mathrm{0,1,2,3,4}\right\}$ ) send b (0) b (1);

If b that is these 5 transmission blocks feedbacks has 1 to be ACK response message or has 1 to be NACK response message the total n=1 or 4 of () ACK response message (according to mapping ruler (2) mapping); For n=1, from 5 available PUCCH, select any 1 PUCCH to send b (0) b (1), for n=4, from 5 available PUCCH, select any 1 PUCCH to send b (0) b (1), can be select PUCCH identical with n=1 to send different b (0) b (1).

In this embodiment, n=1 and n=4 situation all have 5 kinds, select 1 PUCCH to send b (0) b (1) and represent the combination that these transmission block feedback states combination needs 10 kinds are different.

Such as: if the response message of 5 transmission block feedbacks is followed successively by NACK, NACK, ACK, NACK, NACK, so can selects the 3rd PUCCH that transmission block is corresponding, namely can select PUCCHn _{pUCCH, 2} ⁽¹⁾send b (0) b (1), if the response message of 5 transmission block feedbacks is followed successively by ACK, ACK, NACK, ACK, ACK, also can select PUCCHn _{pUCCH, 2} ⁽¹⁾, b (0) b (1) just sent is different from during n=1.

If the total n=2 or 3 of (c) ACK response message, because of (mapping according to mapping ruler (4)), because use 1 PUCCH to send b (0) b (1), one has $C_5^1\×4=20$ Plant combination, employ 1+10=11 kind above, also have 9 kinds of combinations, represent that a part of transmission block feedback states combines with these remaining 9 kinds of combinations, remaining transmission block feedback states combinationally uses selects 2 PUCCH to send from 5 available PUCCH, different in these 2 PUCCH combinations of selection and (b), as long as note whether there are two NACK from same component carrier, if had, during Channel assignment, avoid two PUCCH selecting the transmission block of this component carrier corresponding.

Application example three:

Suppose M=3, N=6 (having two transmission blocks in each component carrier), 2 ⁿ=64 are greater than $C_N^1\×4=4N=24,$ , UE adds up the ACK response message sum n of these 6 transmission block feedbacks, and according to n value Choose for user rule, (6 available PUCCH are n to mapping ruler as shown in Figure 2 _{pUCCH, 0} ⁽¹⁾, n _{pUCCH, 1} ⁽¹⁾... n _{pUCCH, 5} ⁽¹⁾):

If the sum of (a) ACK response message 6 (mapping according to mapping ruler (1)) that is these 6 transmission blocks feedbacks be ACK response message entirely, in 6 available PUCCH, select any one PUCCH to send b (0) b (1).

Such as: if the response message of 6 transmission block feedbacks is followed successively by ACK, ACK, ACK, ACK, ACK, (the first two ACK response message is from two transmission blocks of one-component carrier wave for ACK, middle two ACK response messages are from two transmission blocks of another one component carrier, and latter two ACK response message is from the transmission block of last component carrier, if do not made specified otherwise, also above rule is adopted below), so in these 6 available PUCCH, select n _{pUCCH, a} ⁽¹⁾(wherein $\∀a\∈\left\{\mathrm{0,1,2,3,4,5}\right\}$ ) send b (0) b (1);

If the total n=1 or 5 of (b) ACK response message and (mapping according to mapping ruler (2)), that is these 6 transmission block feedbacks has 1 to be ACK response message or has 1 to be NACK response message, for n=1, from 6 available PUCCH, select any 1 PUCCH to send b (0) b (1), select the response message of feedback to be the PUCCH that the transmission block of ACK is corresponding as can be, but not limited to, for n=5, from 6 available PUCCH, select any 1 PUCCH to send b (0) b (1), can be select PUCCH identical with n=1 to send different b (0) b (1).

In this embodiment, n=1 and n=5 situation all have 6 kinds, select 1 PUCCH to send b (0) b (1) and represent the combination that these feedback needs 12 kinds are different.

Such as: if the response message of 6 transmission block feedbacks is followed successively by NACK, NACK, ACK, NACK, NACK, NACK, so can select the 3rd PUCCH that transmission block is corresponding, i.e. PUCCHn _{pUCCH, 2} ⁽¹⁾send b (0) b (1), if the response message of 6 transmission block feedbacks is followed successively by ACK, ACK, NACK, ACK, ACK, ACK, also can select PUCCHn _{pUCCH, 2} ⁽¹⁾, b (0) b (1) just sent is different from during n=1.

If the total n=2 or 4 of (c) ACK response message, because of i.e. n ≠ m, therefore map according to mapping ruler (3), that is these 6 transmission block feedbacks has 2 to be ACK response message or has 2 to be NACK response message, for n=2, from 6 available PUCCH, select arbitrarily 1 PUCCH to send, can be, but not limited to be select the response message of feedback to be the PUCCH that the transmission block of ACK is corresponding, for n=4, from 6 available PUCCH, select 2 PUCCH to send, can be select PUCCH identical with n=2 to send different b (0) b (1);

Such as: if the response message of 6 transmission block feedbacks is followed successively by NACK, ACK, ACK, NACK, NACK, NACK, can be select PUCCHn _{pUCCH, 1} ⁽¹⁾, n _{pUCCH, 2} ⁽¹⁾, send b (0) b (1) respectively at these two PUCCH, if the response message of 6 transmission block feedbacks is followed successively by ACK, NACK, NACK, ACK, ACK, ACK, select PUCCHn _{pUCCH, 1} ⁽¹⁾, n _{pUCCH, 2} ⁽¹⁾, send b (0) b (1) different with n=2 respectively at these 2 PUCCH.

It is noted herein that: whether there are 2 NACK from the situation of 2 transmission blocks of same component carrier, if had, avoid during Channel assignment selecting this 2 channels, such as: during n=2, the response message of 6 transmission block feedbacks is followed successively by NACK, NACK, NACK, NACK, ACK, ACK, so should avoid during Channel assignment selecting n _{pUCCH, 0} ⁽¹⁾, n _{pUCCH, 1} ⁽¹⁾, n _{pUCCH, 2} ⁽¹⁾and n _{pUCCH, 3} ⁽¹⁾, and select n _{pUCCH, 4} ⁽¹⁾with n _{pUCCH, 5} ⁽¹⁾, during for n=4, the response message of 6 transmission block feedbacks is followed successively by ACK, ACK, ACK, ACK, NACK, NACK, should avoid selecting n _{pUCCH, 4} ⁽¹⁾with n _{pUCCH, 5} ⁽¹⁾, and send b (0) b (1), as can n be selected from optional 2 of other 4 PUCCH _{pUCCH, 0} ⁽¹⁾, n _{pUCCH, 3} ⁽¹⁾.

If the total n=3 of (d) ACK response message, because of (map according to mapping ruler (4), that is these 6 transmission block feedbacks has 3 to be ACK response message or has 3 to be NACK response message, because use 1 PUCCH to send b (0) b (1), one has $C_6^1\×4=24$ Plant combination, situation (a) and (b) employ 1+12=13 kind altogether, also have 11 kinds of combinations, the transmission block feedback states combination of a part of n=3 is represented with these remaining 11 kinds of combinations, remaining transmission block feedback states combinationally uses selects 2 PUCCH to send from 6 available PUCCH, these 2 the PUCCH combinations selected are middle different with (c), here to note whether there are two NACK from same component carrier equally, if had, during Channel assignment, avoid the PUCCH selecting this two transmission blocks corresponding.

Method of the present invention is used to send, can correctly feed back for the feedback states of transmission block on all downlink component carriers, thus the decline of throughput of system performance can not be caused, and some feedback states uses 1 PUCCH to send b (0) b (1) just can be represented, makes to maintain up single carrier during some feedback states.

Claims (12)

1. the sending method of response message in a large bandwidth multi-carrier system, comprise: in the frequency division duplex system of carrier aggregation, when there is scheduling base station to the Physical Downlink Shared Channel PDSCH of terminal on multiple downlink component carrier, the quantity of transmission block is N, and described terminal when not having a Physical Uplink Shared Channel in the subframe of feeding back response information, described terminal feeding back response information in such a way:

Transmission block feedback states as current is combined as the one sent with 1 PUCCH in the combination that b (0) b (1) represents of agreement, and terminal is selected 1 PUCCH by mapping ruler and determined the value of b (0) b (1) of transmission this PUCCH on; Otherwise terminal is selected 2 PUCCH by mapping ruler and is determined b (0) b (1) of transmission on these two PUCCH;

Wherein, the sending with 1 PUCCH the combination that b (0) b (1) represents and carry out under three circumstances of agreement:

1) when the response message of each transmission block is correct reception ACK entirely;

2) sum being ACK when response message in each transmission block be 1 or N-1 time;

3) sum being ACK when response message in each transmission block is or time.

2. the method for claim 1, is characterized in that:

When the response message of each transmission block is correct reception ACK entirely, described mapping ruler is, selects any 1 PUCCH to send b (0) b (1) and represent that current transmission block feedback states combines from N number of PUCCH.

3. the method for claim 1, is characterized in that:

When the sum that response message in each transmission block is ACK be 1 or N-1 time, described mapping ruler is, the transmission block feedback states combination selecting arbitrarily 1 PUCCH to send b (0) b (1) from N number of PUCCH to represent current, the combination of selected PUCCH and the b sent thereon (0) b (1) with transmission block feedback states combine be ACK full time different.

4. the method for claim 1, is characterized in that:

When the sum that response message in each transmission block is ACK is greater than 1 and is not equal to m, described mapping ruler is, selects 2 PUCCH arbitrarily and send b (0) b (1) at each PUCCH to represent that current transmission block feedback states combines from N number of PUCCH;

When N is even number, described in when N is odd number, described in or represent that N/2 rounds downwards.

5. the method for claim 1, is characterized in that:

The sum being ACK when response message in each transmission block is or time, described mapping ruler is,

From N number of PUCCH, select any 1 PUCCH to send b (0) b (1) represent the combination of current transmission block feedback states, different when the combination of selected PUCCH and the b sent thereon (0) b (1) is combined as total n=1, n=N-1 and n=N of ACK with transmission block feedback states;

If also have the combination of transmission block feedback states not to be expressed, then arbitrarily select 2 PUCCH and send b (0) b (1) at each PUCCH to represent that remaining transmission block feedback states combines from N number of PUCCH, different when the combination of selected PUCCH and the b sent thereon (0) b (1) is greater than 1 with the sum that transmission block feedback states is combined as ACK and is not equal to m.

6. the method as described in claim 4 or 5, is characterized in that:

As selection 2 PUCCH, and when all sending the feedback states combination of b (0) b (1) expression transmission block on each PUCCH, described mapping ruler meets, if the response message of 2 of same component carrier transmission blocks is garbled-reception NACK, then avoid selecting 2 of described component carrier PUCCH that transmission block is corresponding to feed back.

7. the terminal in large bandwidth multi-carrier system, is characterized in that:

Terminal receives N number of transmission block of Physical Downlink Shared Channel PDSCH on multiple downlink component carrier, and when there is no Physical Uplink Shared Channel in the subframe of feeding back response information, feeding back response information in such a way:

Transmission block feedback states as current is combined as the one sent with 1 PUCCH in the combination that b (0) b (1) represents of agreement, and terminal is selected 1 PUCCH by mapping ruler and determined the value of b (0) b (1) of transmission this PUCCH on; Otherwise terminal is selected 2 PUCCH by mapping ruler and is determined b (0) b (1) of transmission on these two PUCCH;

Wherein, the sending with 1 PUCCH the combination that b (0) b (1) represents and carry out under three circumstances of agreement:

1) when the response message of each transmission block is correct reception ACK entirely;

2) sum being ACK when response message in each transmission block be 1 or N-1 time;

3) sum being ACK when response message in each transmission block is or time.

8. terminal as claimed in claim 7, is characterized in that:

When the response message of each transmission block is correct reception ACK entirely, described mapping ruler is, selects any 1 PUCCH to send b (0) b (1) and represent that current transmission block feedback states combines from N number of PUCCH.

9. terminal as claimed in claim 7, is characterized in that:

When the sum that response message in each transmission block is ACK be 1 or N-1 time, described mapping ruler is, the transmission block feedback states combination selecting arbitrarily 1 PUCCH to send b (0) b (1) from N number of PUCCH to represent current, the combination of selected PUCCH and the b sent thereon (0) b (1) with transmission block feedback states combine be ACK full time different.

10. terminal as claimed in claim 7, is characterized in that:

When the sum that response message in each transmission block is ACK is greater than 1 and is not equal to m, described mapping ruler is, selects 2 PUCCH arbitrarily and send b (0) b (1) at each PUCCH to represent that current transmission block feedback states combines from N number of PUCCH;

When N is even number, described in when N is odd number, described in or represent that N/2 rounds downwards.

11. terminals as claimed in claim 7, is characterized in that:

The sum being ACK when response message in each transmission block is or time, described mapping ruler is,

From N number of PUCCH, select any 1 PUCCH to send b (0) b (1) represent the combination of current transmission block feedback states, different when the combination of selected PUCCH and the b sent thereon (0) b (1) is combined as total n=1, n=N-1 and n=N of ACK with transmission block feedback states;

If also have the combination of transmission block feedback states not to be expressed, then arbitrarily select 2 PUCCH and send b (0) b (1) at each PUCCH to represent that remaining transmission block feedback states combines from N number of PUCCH, different when the combination of selected PUCCH and the b sent thereon (0) b (1) is greater than 1 with the sum that transmission block feedback states is combined as ACK and is not equal to m.

12. terminals as described in claim 10 or 11, is characterized in that:

As selection 2 PUCCH, and when all sending the feedback states combination of b (0) b (1) expression transmission block on each PUCCH, described mapping ruler meets, if the response message of 2 of same component carrier transmission blocks is garbled-reception NACK, then avoid selecting 2 of described component carrier PUCCH that transmission block is corresponding to feed back.