CN101771520A - Method and device for sending feedback information - Google Patents

Method and device for sending feedback information Download PDF

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Publication number
CN101771520A
CN101771520A CN200810247327A CN200810247327A CN101771520A CN 101771520 A CN101771520 A CN 101771520A CN 200810247327 A CN200810247327 A CN 200810247327A CN 200810247327 A CN200810247327 A CN 200810247327A CN 101771520 A CN101771520 A CN 101771520A
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feedback information
group
correspondence
feedback
processing
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CN101771520B (en
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林亚男
潘学明
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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Priority to PCT/CN2009/001511 priority patent/WO2010069154A1/en
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Abstract

The invention relates to a wireless communication technology, in particular to a method and a device for sending feedback information, thereby being capable of carrying out feedback for the situation that the number of uplink carriers and the number of downlink carriers are different in a long-term evolution multi-carrier system. The method of the embodiment comprises the following steps: carrying out decoding treatment on a code word carried by each downlink sub-frame of each downlink carrier in a plurality of received downlink carriers; determining feedback information which corresponds to the code word carried by each downlink sub-frame of each downlink carrier according to the result of decoding treatment; carrying out merging treatment on all the determined feedback information; and sending the feedback information after the merging treatment through the uplink carriers. The adoption of the method of the embodiment can improve the feedback under the situation that the number of the uplink carriers and the number of the downlink carriers are different and further improve the system efficiency.

Description

A kind of method and apparatus that sends feedback information
Technical field
The present invention relates to wireless communication technology, particularly a kind of method and apparatus that sends feedback information.
Background technology
For long-term evolution multi-carrier system, for supporting the system bandwidth wideer than long evolving system, such as 100MHz, a kind of may be directly to distribute the frequency spectrum of 100M bandwidth referring to Figure 1A, a kind of may be to distribute to some spectrum aggregatings of existing systems, gather into big bandwidth and supply with the long-term evolution multi-carrier system use, up-link carrier and descending carrier can asymmetricly dispose in the system at this moment, be that the user may take N descending carrier and carries out downlink transfer, take M up-link carrier and carry out uplink, and N ≠ M is referring to Figure 1B.
If N＞M, terminal need be transmitted the feedback information on a plurality of descending carriers in a up-link carrier.In descending transmission, opened HARQ (Hybrid Automatic Repeat reQuest, mix automatic repeat requests) during function, terminal is after having finished demodulation to the data on the descending sub frame n ', decoding, the signaling that will whether need to retransmit in the data on this descending sub frame of base station feedback on sub-frame of uplink n=n '+k (is ACK (response message)/NACK (a wrong responses information), wherein ACK represents with " 1 ", this moment, data correctly received, and did not need to retransmit; NACK is with " 0 " expression, this moment, the data decoding mistake needed to retransmit).
When carrying out many code words (code word) transmission, system will be on same physical resource by the usage space multiplex technique, and multiplexing transmission belongs to the multiplex data stream of same terminal.Data flow code word carried in the subframe is deciphered processing.This moment, the content (ACK or NACK) of feedback information will be based on the result to codeword decoding, promptly to obtaining 1 independently ACK or NACK behind each codeword decoding.
For FDD (Frequency division duplex, Frequency Division Duplexing (FDD)) system, because sub-frame of uplink is identical with the descending sub frame number in the system, therefore can find a sub-frame of uplink n-4 transmitting feedback information corresponding for each descending sub frame n, promptly can carry one or two feedback information in each sub-frame of uplink at most with it.Feedback information is through BPSK (Binary phase shift keying, two-phase PSK) modulation or QPSK (Quadrature phase shift keying, quarternary phase-shift keying (QPSK)) modulation, obtain a modulation symbol, then carry a modulation symbol in each sub-frame of uplink, this modulation symbol (uses cyclically shifted sequences to carry out spread spectrum earlier on frequency domain through twice spread spectrum, re-use orthogonal sequence and carrying out spread spectrum on the time domain) etc. become a single carrier after the processing and broadcast signal after, transmit in the feedback channel of appointment, the feedback information of a plurality of terminals transmits on identical physical resource by the mode of sign indicating number branch is multiplexing in the sub-district.
For TDD, because there is the various configurations ratio in its ascending-descending subframes, when descending number of sub frames was counted greater than sub-frame of uplink, terminal will be fed back the feedback information on a plurality of descending sub frames in a sub-frame of uplink.
But in the present long-term evolution multi-carrier system,, also there is not the scheme of feeding back at the up-link carrier number situation different with the descending carrier number only at the sub-frame of uplink number feedback scheme different with the descending sub frame number.
In sum, the scheme of not feeding back in the present long-term evolution multi-carrier system at the up-link carrier number situation different with the descending carrier number.
Summary of the invention
A kind of method and apparatus that sends feedback information that the embodiment of the invention provides in order in long-term evolution multi-carrier system, can feed back for the situation that the up-link carrier number is different with the descending carrier number.
A kind of method that sends feedback information that the embodiment of the invention provides comprises:
Descending sub frame code word carried to each descending carrier in a plurality of descending carriers of receiving is deciphered processing;
According to the result that decoding is handled, determine the feedback information of each descending sub frame code word carried correspondence of each descending carrier;
All feedback informations of determining are merged processing;
The feedback information that merges after handling is sent by up-link carrier.
A kind of terminal that the embodiment of the invention provides comprises:
Receiving processing module is used for the descending sub frame code word carried of a plurality of each descending carrier of descending carrier of receiving is deciphered processing;
The information determination module is used for the result according to the decoding processing, determines the feedback information of each descending sub frame code word carried correspondence of each descending carrier;
Processing module is used for all feedback informations of determining are merged processing;
Sending module, the feedback information that is used for merging after handling sends by up-link carrier.
The embodiment of the invention is deciphered processing to the descending sub frame code word carried of each descending carrier in a plurality of descending carriers of receiving; According to the result that decoding is handled, determine the feedback information of each descending sub frame code word carried correspondence of each descending carrier; All feedback informations of determining are merged processing; The feedback information that merges after handling is sent by up-link carrier.Because in long-term evolution multi-carrier system, can feed back for the situation that the up-link carrier number is different with the descending carrier number, thereby improved system effectiveness, and this scheme is simple, implement easily, be applicable to FDD system and TDD system, thus can well with LTERelease 8 system compatibles.
Description of drawings
Figure 1A is the single-frequency spectral system schematic;
Figure 1B is the spectrum aggregating system schematic;
Fig. 2 is the structural representation of embodiment of the invention terminal;
Fig. 3 A is that embodiment of the invention single codeword time domain merges schematic diagram;
Fig. 3 B is that the embodiment of the invention two code word time domains merge schematic diagram;
Fig. 4 A merges schematic diagram one for embodiment of the invention time domain;
Fig. 4 B merges schematic diagram two for embodiment of the invention time domain;
Fig. 4 C is that embodiment of the invention single codeword frequency domain merges schematic diagram;
Fig. 4 D is that the embodiment of the invention two code word frequency domains merge schematic diagram;
Fig. 5 sends the method flow schematic diagram of feedback information for the embodiment of the invention;
The schematic diagram one that Fig. 6 feeds back for embodiment of the invention FDD system;
The schematic diagram two that Fig. 7 feeds back for embodiment of the invention FDD system
The schematic diagram three that Fig. 8 feeds back for embodiment of the invention FDD system;
The schematic diagram that Fig. 9 feeds back for embodiment of the invention TDD system.
Embodiment
The embodiment of the invention is deciphered processing to the descending sub frame code word carried of each descending carrier in a plurality of descending carriers of receiving; According to the result that decoding is handled, determine the feedback information of each descending sub frame code word carried correspondence of each descending carrier; All feedback informations of determining are merged processing; The feedback information that merges after handling is sent by up-link carrier, owing to can merge processing according to the feedback information of descending carrier, thus be used in the up-link carrier number situation different with the descending carrier number.
As shown in Figure 2, the terminal of the embodiment of the invention comprises: receiving processing module 10, information determination module 20, processing module 30 and sending module 40.
Receiving processing module 10 is used for the descending sub frame code word carried of a plurality of each descending carrier of descending carrier of receiving is deciphered processing.
Wherein, if two data flow of the descending sub frame of descending carrier carrying are then deciphered processing to two code words (code word 1 and code word 2) in each data flow respectively.
A plurality of descending carriers of receiving can make interior a plurality of descending carriers of receiving of a period of time of setting; Also can be a plurality of descending carriers of receiving simultaneously.
Information determination module 20 is used for the result that 10 decodings are handled according to receiving processing module, determines the feedback information of each descending sub frame code word carried correspondence of each descending carrier.
Wherein, if 10 pairs of codeword decoding successes of receiving processing module, then the feedback information of this code word correspondence is ACK; Accordingly, if 10 pairs of codeword decoding failures of receiving processing module, then the feedback information of this code word correspondence is NACK.
If two code words of descending sub frame carrying, then this descending sub frame just has two feedback informations.
Processing module 30 is used for all feedback informations that information determination module 20 is determined are merged processing.
Sending module 40 is used for the feedback information that processing module 30 merges after handling is sent by up-link carrier.
Wherein, the mode that 30 pairs of feedback informations of processing module merge processing has a variety of, no matter which kind of merging mode all needs to guarantee following merging processing rule:
1, the feedback information that merges after handling can only have two state: ACK, NACK;
When 2, the feedback information that merges processing all was ACK, the feedback information that merges after handling was ACK;
3, the feedback information that merges processing all is NACK, and when not reaching the number of retransmissions of setting, the feedback information that merges after handling is NACK.
If merging the feedback information of processing partly is ACK, part is NACK, and the feedback information of then selecting as required to merge after handling is ACK or NACK.
Such as setting the feedback information that merges processing is not ACK entirely, and when not reaching the number of retransmissions of setting, the feedback information that merges after handling is NACK;
Can also set when the ACK of the feedback information that merges processing quantity is not less than NACK, the feedback information that merges after handling is ACK, when the ACK of the feedback information that merges processing quantity less than NACK, and when not reaching the number of retransmissions of setting, the feedback information that merges after handling is NACK.
Need to prove that the feedback information that merges processing partly is ACK, part is the situation of NACK, is not limited to several processing mode above-mentioned, all is suitable for present embodiment as long as can finally determine the mode of the content of the feedback information after merging is handled.
Below with the mode of merge handling be that time domain merges, frequency domain merges, first time domain merges that frequency domain merges again, first frequency domain merges that time domain merges, first time domain merges frequency domain multiplexing again again and first frequency domain merges six kinds of modes of time-domain multiplexed again and describes respectively.
If merge the mode of processing is that time domain merges (bundling), and then processing module 30 can further include: first grouping module 300 and first merges processing module 310.
First grouping module 300 is used for the descending sub frame of all descending carriers is divided into groups, and the descending sub frame in each group is the descending sub frame in the same descending carrier.
Here be that the descending sub frame in the same descending carrier is divided into one group,, can be divided into the X group accordingly if X descending carrier arranged.
First merges processing module 310, is used for respectively the feedback information of every group descending sub frame code word carried correspondence is merged processing, the feedback information after the merging that obtains every group of correspondence is handled.
Here the feedback information of the descending sub frame code word carried correspondence in a group can be carried out logic and " add " processing, thereby obtain one group of feedback information of a descending carrier correspondence; If X descending carrier arranged, then can obtain X group feedback information.
Can certainly adopt other to merge processing mode, but must guarantee to satisfy the requirement that merges processing rule.
If Ci is the maximum number of the code word transmitted in M subframe among the descending carrier i, wherein i ∈ 0,1 ..., M-1} then will obtain C on each descending carrier iACK/NACK after the individual merging (is b i).Referring to Fig. 3 A, will obtain C on each descending carrier MACK/NACK after the individual merging (is b 0).
If the descending sub frame of a plurality of code words of carrying is arranged in one group, also just say so, descending sub frame has carried a plurality of data flow, then handle a plurality of code words that a back descending sub frame will be corresponding, then first merges processing module 310 feedback information of the code word correspondence of same code word numbering in a group is merged.
Two data flow have been carried such as descending sub frame, then handle two code words (being code word 1 and code word 2) that a back descending sub frame will be corresponding, in one group, the feedback information of the code word correspondence of all code words 1 is merged, the feedback information of the code word correspondence of all code words 2 is merged, and such one group will to obtain two ACK/NACK after the merging (be b 0And b 1), referring to Fig. 3 B.
If not every descending sub frame all has two code words in one group, it is also identical with mode among Fig. 3 B to merge processing mode, just b 0And b 1The quantity of the feedback information that middle participation merges is inequality.
If merge the mode of processing is that frequency domain merges (bundling), and then processing module 30 can further include: second grouping module 320 and second merges processing module 330.
Second grouping module 320 is used for the descending sub frame of all descending carriers is divided into groups, and the subframe numbering of the descending sub frame in each group is identical.
Here be that the identical descending sub frame of all descending carrier neutron frame numbers is divided into one group,, can be divided into the X group accordingly if X subframe arranged in the descending carrier.
Second merges processing module 330, is used for respectively the feedback information of every group descending sub frame code word carried correspondence is merged processing, the feedback information after the merging that obtains every group of correspondence is handled.
Here the feedback information of the descending sub frame code word carried correspondence in a group can be carried out logic and " add " processing, thereby obtain one group of feedback information of a descending carrier correspondence; If X descending carrier arranged, then can obtain X group feedback information.
Can certainly adopt other to merge processing mode, but must guarantee to satisfy the requirement that merges processing rule.
Merge mode for frequency domain and enumerating three kinds of modes here.
First kind of mode: second merges processing module 330 merges processing to the feedback information of all the descending sub frame code word carried correspondences in every group respectively, the feedback information after the merging that obtains every group of correspondence is handled.
Concrete, if descending sub frame carries a plurality of code words, be unit with the descending sub frame earlier then, the feedback information of a plurality of code word correspondences of descending sub frame carrying is merged (if there is not descending sub frame to carry a plurality of code words, then do not need to carry out this step), the feedback information to all the descending sub frame code word carried correspondences in every group merges processing then.
Referring to Fig. 4 A, suppose that the corresponding descending sub frame of this group is numbered 3, one total N descending carrier, two code words of descending sub frame carrying that have, then earlier code word 1 and code word 2 are merged processing, and then the feedback information that the descending sub frame in the 1st to N the descending carrier is numbered 3 descending sub frame correspondence merges processing, and to obtain an ACK/NACK (be b 0).
The second way: at least one descending sub frame during the second merging processing module 330 is determined every group, feedback information to the descending sub frame code word carried correspondence determined merges processing, and the feedback information of the remaining descending sub frame code word carried correspondence in every group is merged processing.
Concrete, if descending sub frame carries a plurality of code words, be unit with the descending sub frame earlier then, the feedback information of a plurality of code word correspondences of descending sub frame carrying is merged (if there is not descending sub frame to carry a plurality of code words, then do not need to carry out this step), a part of descending sub frame in determining every group then, feedback information to this part descending sub frame code word carried correspondence merges processing, the feedback information of remaining descending sub frame code word carried correspondence is merged processing in every group then, just obtain two feedback informations that merge after handling in such one group.
Referring to Fig. 4 B, suppose that the corresponding descending sub frame of this group is numbered 3, one total N descending carriers, two code words of the descending sub frame that has carrying merge processing to code word 1 and code word 2 then earlier, then with the 1st to the
Figure G2008102473273D0000081
The feedback information that descending sub frame in the individual descending carrier is numbered 3 descending sub frame correspondence merges handles that to obtain an ACK/NACK (be b 0), with
Figure G2008102473273D0000082
The feedback information that descending sub frame in N the descending carrier is numbered 3 descending sub frame correspondence merges handles that to obtain an ACK/NACK (be b 1), such one group will to obtain two ACK/NACK after the merging (be b 0And b 1).
The third mode: second merges processing module 330 merges the feedback information of the code word correspondence of same code word numbering in a group.
Concrete, if do not carry the descending sub frame of a plurality of code words in one group, think that then the label of all code words all is 1, then the feedback information with all code word correspondences in a group merges.
Referring to Fig. 4 C, suppose that the corresponding descending sub frame of this group is numbered 3, one total N descending carriers, the feedback information that then descending sub frame in the 1st to N the descending carrier is numbered 3 descending sub frame correspondence merges processing, and to obtain an ACK/NACK (be b 0).
If the descending sub frame of a plurality of code words of carrying is arranged in one group, also just say so, descending sub frame has carried a plurality of data flow, then handle a plurality of code words that a back descending sub frame will be corresponding, then second merges processing module 330 feedback information of the code word correspondence of same code word numbering in a group is merged.
Referring to Fig. 4 D, suppose that the corresponding descending sub frame of this group is numbered 3, one total N descending carrier, the feedback information that the descending sub frame in the 1st to N the descending carrier is numbered the code word correspondence of all code words 1 of 3 merge processing, and to obtain an ACK/NACK (be b 0), the feedback information that the descending sub frame in the 1st to N the descending carrier is numbered the code word correspondence of all code words 2 of 3 merges handles that to obtain an ACK/NACK (be b 1), such one group will to obtain two ACK/NACK after the merging (be b 0And b 1).
Merge again frequency domain and merge if merge the mode of processing and is first time domain, then first merge processing module 310 finish time domain merge handle after, the feedback information after the merging processing of every group of correspondence obtaining is merged processing once more.
Concrete, owing to after time domain finishes dealing with, can obtain a plurality of feedback informations (1 to 2 feedback information of every group of correspondence), more a plurality of feedback informations are merged processing, thereby just obtain a feedback information that merges after handling.
Here a plurality of feedback informations after time domain can being finished dealing with carry out logic and " add " processing, thereby obtain a feedback information that merges after handling.
Can certainly adopt other to merge processing mode, but must guarantee to satisfy the requirement that merges processing rule.
Merge again time domain and merge if merge the mode of processing and is first frequency domain, then second merge processing module 330 finish time domain merge handle after, the feedback information after the merging processing of every group of correspondence obtaining is merged processing once more.
Concrete, owing to after frequency domain finishes dealing with, can obtain a plurality of feedback informations (1 to 2 feedback information of every group of correspondence), more a plurality of feedback informations are merged processing, thereby just obtain a feedback information that merges after handling.
Here a plurality of feedback informations after time domain can being finished dealing with carry out logic and " add " processing, thereby obtain a feedback information that merges after handling.
Can certainly adopt other to merge processing mode, but must guarantee to satisfy the requirement that merges processing rule.
If merge the mode of processing is that first time domain merges frequency domain multiplexing again, after then first feedback information that merges the descending sub frame code word carried correspondence of processing module 310 in respectively to every group merges processing, sending module 40 sends before the feedback information, feedback information after the merging of every group of correspondence obtaining handled carries out frequency domain multiplexing to be handled, and obtains feedback signal.
The mode of frequency domain multiplexing has a variety of, no matter which kind of mode all needs to guarantee the rule of following frequency domain multiplexing:
1, the feedback signal that generates through frequency domain multiplexing must have single-carrier property (being that feedback signal takies single carrier wave frequency range);
2, need to guarantee that the base station have reliable detection performance (such as adopting the low-order-modulated mode) to feedback signal, guarantee just (no matter being that terminal is in where feedback signal can be sent to the base station in the sub-district) transmitted and had similar coverage to up feedback transmission and active data;
3, guarantee that the base station can detect feedback information (being ACK/NACK) on a plurality of descending carriers according to feedback signal.
In frequency domain multiplexing, the ACK/NACK that the ACK/NACK on a plurality of carrier waves is considered as on the former subframe gets final product.
If merge the mode of processing is that first frequency domain merges time-domain multiplexed again, after then second feedback information that merges the descending sub frame code word carried correspondence of processing module 330 in respectively to every group merges processing, sending module 40 sends before the feedback information, feedback information after the merging of every group of correspondence obtaining handled carries out frequency domain multiplexing to be handled, and obtains feedback signal.
The mode of time-domain multiplexed has a variety of, no matter which kind of mode all needs to guarantee the rule of following time-domain multiplexed:
1, the feedback signal that generates through time-domain multiplexed must have single-carrier property (being that feedback signal takies single carrier wave frequency range);
2, need to guarantee that the base station have reliable detection performance (such as adopting the low-order-modulated mode) to feedback signal, guarantee just (no matter being that terminal is in where feedback signal can be sent to the base station in the sub-district) transmitted and had similar coverage to up feedback transmission and active data;
3, guarantee that the base station can detect feedback information (being ACK/NACK) on a plurality of descending carriers according to feedback signal.
If merge the mode of processing is that time domain merges, and the feedback information after then sending module 40 is handled the merging of every group of correspondence sends by the continuous sub-frame of uplink of up-link carrier.
Wherein, the feedback information after the merging of one group of correspondence is handled sends by a sub-frame of uplink of up-link carrier.
If merge the mode of processing is that frequency domain merges, and the feedback information after then sending module 40 is handled the merging of every group of correspondence sends by the sub-frame of uplink of up-link carrier.
Wherein, the feedback information after the merging of one group of correspondence is handled sends by a sub-frame of uplink of up-link carrier.
Merge frequency domain again and merge if merge the mode of processing and is first time domain, then sending module 40 will merge the continuous sub-frame of uplink transmission of feedback information by up-link carrier after handling.
Wherein, the feedback information after merging is handled sends by a sub-frame of uplink of up-link carrier.
Because a sub-frame of uplink can carry 2 Bit datas, all are for b 0And b 1(b 0And b 1Respectively be 1 bit) can send by a sub-frame of uplink.
In specific implementation process, the feedback information that sending module 40 will merge earlier after handling converts feedback signal to.
The mode that converts feedback information to feedback signal has a variety of, no matter which kind of mode all needs to guarantee following conversion process rule:
1, the feedback signal after conversion process has single-carrier property (being that feedback signal takies single carrier wave frequency range);
2, need to guarantee that the base station have reliable detection performance (such as adopting the low-order-modulated mode) to feedback signal, guarantee just (no matter being that terminal is in where feedback signal can be sent to the base station in the sub-district) transmitted and had similar coverage to up feedback transmission and active data.
Such as feedback information being modulated through BPSK modulation or QPSK, obtain a modulation symbol, this modulation symbol is become a single carrier broadcast signal (being feedback signal) after twice spread spectrum (use cyclically shifted sequences to carry out spread spectrum earlier on frequency domain, re-use orthogonal sequence and carrying out spread spectrum on the time domain) handled.
Sending module 40 determines to merge the descending sub frame of the feedback information correspondence after handling, because the feedback information after merge handling is the feedback information by a plurality of descending sub frame correspondences to be merged to handle and obtains, so the feedback information that merges after handling can corresponding a plurality of descending sub frames.
Sending module 40 is determined the feedback channel in the sub-frame of uplink of descending sub frame correspondence again, thereby determines to merge the feedback channel in the sub-frame of uplink of the feedback signal correspondence that the feedback information after handling converts to.
The all corresponding feedback channel of each descending sub frame, the feedback information that merges processing like this will corresponding a plurality of feedback channels, at this moment can select a feedback channel at random or choose according to selecting a feedback channel (choosing according to setting as required) according to predefined.
For the FDD system because the number of sub-frame of uplink and descending sub frame is identical in the system, so each descending sub frame can be looked for a sub-frame of uplink corresponding with it, and then from the sub-frame of uplink of determining the feedback channel of definite correspondence;
For the TDD system, because there are the various configurations ratio in sub-frame of uplink and descending sub frame, then need according to table 1, determine the sub-frame of uplink of each descending sub frame correspondence, and then from the sub-frame of uplink of determining, determine corresponding feedback channel.
Figure G2008102473273D0000121
The regulation of the up direction feedback of table 1 downlink transfer
Sending module 40 is last by the transmission of the feedback channel in the sub-frame of uplink of determining feedback signal.
If merge the mode of processing is that first time domain merges the frequency domain merging earlier again, then sending module 40 is according to the content of feedback information and the corresponding relation of the feedback channel in the sub-frame of uplink, determines to merge the feedback channel of sub-frame of uplink of the content correspondence of the feedback information after handling.
Wherein, the feedback information after merging is handled sends by a sub-frame of uplink of up-link carrier.
Because a sub-frame of uplink can carry 2 Bit datas, all are for b 0And b 1(b 0And b 1Respectively be 1 bit) can send by a sub-frame of uplink.
In specific implementation process, determine to merge the feedback channel of the corresponding sub-frame of uplink of the content of the feedback information after handling according to the corresponding relation of the feedback channel in the content of the quantity of descending carrier, feedback information and the sub-frame of uplink.
Wherein, the corresponding relation of the content of the quantity of descending carrier, feedback information and the feedback channel in the sub-frame of uplink can preestablish as required.Accordingly, the base station determines by which feedback channel to be received earlier after receiving feedback information, and then according to the content of feedback information in conjunction with the content of feedback information and the corresponding relation of the feedback channel in the sub-frame of uplink, need just can determine whether to retransmit.
Be that 2 bits (being b (0) and b (1)) describe n with feedback information below UL, mBe the feedback letter Taoist monastic name.
Table 2, table 3 and table 4 are that the quantity of descending carrier is respectively 2,3 and at 4 o'clock, the content of feedback information and the corresponding relation of feedback channel.
Descending carrier 1, descending carrier 2 ??n UL，m ??b(0)，b(1)
??ACK，ACK ??n UL，1 ??1，1
ACK, NACK/DTX (expression does not detect any information) ??n UL，0 ??0，1
??NACK/DTX，ACK ??n UL，1 ??0，0
Descending carrier 1, descending carrier 2 ??n UL，m ??b(0)，b(1)
??NACK/DTX，NACK ??n UL，1 ??1，0
??NACK，DTX ??n UL，0 ??1，0
??DTX，DTX ??N/A ??N/A
The number of table 2 descending carrier
Descending carrier 1, descending carrier 2, descending carrier 3 ??n UL，m ??b(0)，b(1)
??ACK，ACK，ACK ??n UL，2 ??1，1
??ACK，ACK，NACK/DTX ??n UL，1 ??1，1
??ACK，NACK/DTX，ACK ??n UL，0 ??1，1
??ACK，NACK/DTX，NACK/DTX ??n UL，0 ??0，1
??NACK/DTX，ACK，ACK ??n UL，2 ??1，0
??NACK/DTX，ACK，NACK/DTX ??n UL，1 ??0，0
??NACK/DTX，NACK/DTX，ACK ??n UL，2 ??0，0
??DTX，DTX，NACK ??n UL，2 ??0，1
??DTX，NACK，NACK/DTX ??n UL，1 ??1，0
??NACK，NACK/DTX，NACK/DTX ??n UL，0 ??1，0
??DTX，DTX，DTX ??N/A ??N/A
The quantity of table 3 descending carrier is
Descending carrier 1, descending carrier 2, descending carrier 3, descending carrier 4 ??n UL，m ??b(0)，b(1)
??ACK，ACK，ACK，ACK ??n UL，1 ??1，1
Descending carrier 1, descending carrier 2, descending carrier 3, descending carrier 4 ??n UL，m ??b(0)，b(1)
??ACK，ACK，ACK，NACK/DTX ??n UL，1 ??1，0
??NACK/DTX，NACK/DTX，NACK，DTX ??n UL，2 ??1，1
??ACK，ACK，NACK/DTX，ACK ??n UL，1 ??1，0
??NACK，DTX，DTX，DTX ??n UL，0 ??1，0
??ACK，ACK，NACK/DTX，NACK/DTX ??n UL，1 ??1，0
??ACK，NACK/DTX，ACK，ACK ??n UL，3 ??0，1
??NACK/DTX，NACK/DTX，NACK/DTX，NACK ??n UL，3 ??1，1
??ACK，NACK/DTX，ACK，NACK/DTX ??n UL，2 ??0，1
??ACK，NACK/DTX，NACK/DTX，ACK ??n UL，0 ??0，1
??ACK，NACK/DTX，NACK/DTX，NACK/DTX ??n UL，0 ??1，1
??NACK/DTX，ACK，ACK，ACK ??n UL，3 ??0，1
??NACK/DTX，NACK，DTX，DTX ??n UL，1 ??0，0
??NACK/DTX，ACK，ACK，NACK/DTX ??n UL，2 ??1，0
??NACK/DTX，ACK，NACK/DTX，ACK ??n UL，3 ??1，0
??NACK/DTX，ACK，NACK/DTX，NACK/DTX ??n UL，1 ??0，1
??NACK/DTX，NACK/DTX，ACK，ACK ??n UL，3 ??0，1
??NACK/DTX，NACK/DTX，ACK，NACK/DTX ??n UL，2 ??0，0
??NACK/DTX，NACK/DTX，NACK/DTX，ACK ??n UL，3 ??0，
??DTX，DTX，DTX，DTX ??N/A ??NA
The quantity of table 4 descending carrier
Need to prove, merging the mode of processing merges if first frequency domain merges time domain again, then to merge the processing mode of the sending module 40 of frequency domain in merging similar again for the processing mode of sending module 40 and above-described first time domain, just the quantity of the descending carrier in table 2～table 4 is the subframe numbering of descending sub frame, repeats no more.
As shown in Figure 5, the method for embodiment of the invention transmission feedback information comprises the following steps:
Step 500, the descending sub frame code word carried of each descending carrier in a plurality of descending carriers of receiving is deciphered processing.
Wherein, if two data flow of the descending sub frame of descending carrier carrying are then deciphered processing to two code words (code word 1 and code word 2) in each data flow respectively.
A plurality of descending carriers of receiving can make interior a plurality of descending carriers of receiving of a period of time of setting; Also can be a plurality of descending carriers of receiving simultaneously.
Step 501, according to the result that decoding is handled, determine the feedback information of each descending sub frame code word carried correspondence of each descending carrier.
Step 502, all feedback informations of determining are merged processing.
Wherein, if in the step 501, to the codeword decoding success, then the feedback information of this code word correspondence is ACK; Accordingly, if in the step 501, to the codeword decoding failure, then the feedback information of this code word correspondence is NACK.
If two code words of descending sub frame carrying, then this descending sub frame just has two feedback informations.
Step 503, the feedback information that will merge after handling send by up-link carrier.
Wherein, in the step 502, the mode that feedback information is merged processing has a variety of, no matter which kind of merging mode all needs to guarantee following merging processing rule:
1, the feedback information that merges after handling can only have two state: ACK, NACK;
When 2, the feedback information that merges processing all was ACK, the feedback information that merges after handling was ACK;
3, the feedback information that merges processing all is NACK, and when not reaching the number of retransmissions of setting, the feedback information that merges after handling is NACK.
If merging the feedback information of processing partly is ACK, part is NACK, and the feedback information of then selecting as required to merge after handling is ACK or NACK.
Such as setting the feedback information that merges processing is not ACK entirely, and when not reaching the number of retransmissions of setting, the feedback information that merges after handling is NACK;
Can also set when the ACK of the feedback information that merges processing quantity is not less than NACK, the feedback information that merges after handling is ACK, when the ACK of the feedback information that merges processing quantity less than NACK, and when not reaching the number of retransmissions of setting, the feedback information that merges after handling is NACK.
Need to prove that the feedback information that merges processing partly is ACK, part is the situation of NACK, is not limited to several processing mode above-mentioned, all is suitable for present embodiment as long as can finally determine the mode of the content of the feedback information after merging is handled.
Below with the mode of merge handling be that time domain merges, frequency domain merges, first time domain merges that frequency domain merges again, first frequency domain merges that time domain merges, first time domain merges frequency domain multiplexing again again and first frequency domain merges six kinds of modes of time-domain multiplexed again and describes respectively.
If merge the mode of processing is that time domain merges (bundling), and then step 502 can further include:
Step a502, the descending sub frame of all descending carriers is divided into groups, the descending sub frame in each group is the descending sub frame in the same descending carrier.
Here be that the descending sub frame in the same descending carrier is divided into one group,, can be divided into the X group accordingly if X descending carrier arranged.
Step b502, the feedback information to the descending sub frame code word carried correspondence in every group merges processing respectively, the feedback information after the merging that obtains every group of correspondence is handled.
Here the feedback information of the descending sub frame code word carried correspondence in a group can be carried out logic and " add " processing, thereby obtain one group of feedback information of a descending carrier correspondence; If X descending carrier arranged, then can obtain X group feedback information.
Can certainly adopt other to merge processing mode, but must guarantee to satisfy the requirement that merges processing rule.
If Ci is the maximum number of the code word transmitted in M subframe among the descending carrier i, wherein i ∈ 0,1 ..., M-1} then will obtain C on each descending carrier iACK/NACK after the individual merging (is b i).Referring to Fig. 3 A, will obtain C on each descending carrier MACK/NACK after the individual merging (is b 0).
If the descending sub frame of a plurality of code words of carrying is arranged in one group, also just say so, descending sub frame has carried a plurality of data flow, then handles a plurality of code words that a back descending sub frame will be corresponding, then among the step b502, the feedback information of the code word correspondence of same code word numbering in a group is merged.
Two data flow have been carried such as descending sub frame, then handle two code words (being code word 1 and code word 2) that a back descending sub frame will be corresponding, in one group, the feedback information of the code word correspondence of all code words 1 is merged, the feedback information of the code word correspondence of all code words 2 is merged, and such one group will to obtain two ACK/NACK after the merging (be b 0And b 1), referring to Fig. 3 B.
If not every descending sub frame all has two code words in one group, it is also identical with mode among Fig. 3 B to merge processing mode, just b 0And b 1The quantity of the feedback information that middle participation merges is inequality.
If merge the mode of processing is that frequency domain merges (bundling), and then step 502 can further include:
Step c502, the descending sub frame of all descending carriers is divided into groups, the subframe numbering of the descending sub frame in each group is identical.
Here be that the identical descending sub frame of all descending carrier neutron frame numbers is divided into one group,, can be divided into the X group accordingly if X subframe arranged in the descending carrier.
Steps d 502, the feedback information to the descending sub frame code word carried correspondence in every group merges processing respectively, the feedback information after the merging that obtains every group of correspondence is handled.
Here the feedback information of the descending sub frame code word carried correspondence in a group can be carried out logic and " add " processing, thereby obtain one group of feedback information of a descending carrier correspondence; If X descending carrier arranged, then can obtain X group feedback information.
Can certainly adopt other to merge processing mode, but must guarantee to satisfy the requirement that merges processing rule.
In the steps d 502, merge mode for frequency domain and enumerating three kinds of modes here.
First kind of mode: the feedback information to all the descending sub frame code word carried correspondences in every group merges processing respectively, the feedback information after the merging that obtains every group of correspondence is handled.
Concrete, if descending sub frame carries a plurality of code words, be unit with the descending sub frame earlier then, the feedback information of a plurality of code word correspondences of descending sub frame carrying is merged (if there is not descending sub frame to carry a plurality of code words, then do not need to carry out this step), the feedback information to all the descending sub frame code word carried correspondences in every group merges processing then.
Referring to Fig. 4 A, suppose that the corresponding descending sub frame of this group is numbered 3, one total N descending carrier, two code words of descending sub frame carrying that have, then earlier code word 1 and code word 2 are merged processing, and then the feedback information that the descending sub frame in the 1st to N the descending carrier is numbered 3 descending sub frame correspondence merges processing, and to obtain an ACK/NACK (be b 0).
The second way: determine at least one descending sub frame in every group, the feedback information of the descending sub frame code word carried correspondence determined is merged processing, the feedback information of the remaining descending sub frame code word carried correspondence in every group is merged processing.
Concrete, if descending sub frame carries a plurality of code words, be unit with the descending sub frame earlier then, the feedback information of a plurality of code word correspondences of descending sub frame carrying is merged (if there is not descending sub frame to carry a plurality of code words, then do not need to carry out this step), a part of descending sub frame in determining every group then, feedback information to this part descending sub frame code word carried correspondence merges processing, the feedback information of remaining descending sub frame code word carried correspondence is merged processing in every group then, just obtain two feedback informations that merge after handling in such one group.
Referring to Fig. 4 B, suppose that the corresponding descending sub frame of this group is numbered 3, one total N descending carriers, two code words of the descending sub frame that has carrying merge processing to code word 1 and code word 2 then earlier, then with the 1st to the
Figure G2008102473273D0000181
The feedback information that descending sub frame in the individual descending carrier is numbered 3 descending sub frame correspondence merges handles that to obtain an ACK/NACK (be b 0), with
Figure G2008102473273D0000182
The feedback information that descending sub frame in N the descending carrier is numbered 3 descending sub frame correspondence merges handles that to obtain an ACK/NACK (be b 1), such one group will to obtain two ACK/NACK after the merging (be b 0And b 1).
The third mode: the feedback information of the code word correspondence of same code word numbering in a group is merged.
Concrete, if do not carry the descending sub frame of a plurality of code words in one group, think that then the label of all code words all is 1, then the feedback information with all code word correspondences in a group merges.
Referring to Fig. 4 C, suppose that the corresponding descending sub frame of this group is numbered 3, one total N descending carriers, the feedback information that then descending sub frame in the 1st to N the descending carrier is numbered 3 descending sub frame correspondence merges processing, and to obtain an ACK/NACK (be b 0).
If the descending sub frame of a plurality of code words of carrying is arranged in one group, also just say so, descending sub frame has carried a plurality of data flow, then handles a plurality of code words that a back descending sub frame will be corresponding, then in the steps d 502, the feedback information of the code word correspondence of same code word numbering in a group is merged.
Referring to Fig. 4 D, suppose that the corresponding descending sub frame of this group is numbered 3, one total N descending carrier, the feedback information that the descending sub frame in the 1st to N the descending carrier is numbered the code word correspondence of all code words 1 of 3 merge processing, and to obtain an ACK/NACK (be b 0), the feedback information that the descending sub frame in the 1st to N the descending carrier is numbered the code word correspondence of all code words 2 of 3 merges handles that to obtain an ACK/NACK (be b 1), such one group will to obtain two ACK/NACK after the merging (be b 0And b 1).
Merge again frequency domain and merge if merge the mode of processing and is first time domain, then among the step b502, finish time domain merge handle after, the feedback information after the merging processing of every group of correspondence obtaining is merged processing once more.
Concrete, owing to after time domain finishes dealing with, can obtain a plurality of feedback informations (1 to 2 feedback information of every group of correspondence), more a plurality of feedback informations are merged processing, thereby just obtain a feedback information that merges after handling.
Here a plurality of feedback informations after time domain can being finished dealing with carry out logic and " add " processing, thereby obtain a feedback information that merges after handling.
Can certainly adopt other to merge processing mode, but must guarantee to satisfy the requirement that merges processing rule.
Merge again time domain and merge if merge the mode of processing and is first frequency domain, then in the steps d 502, finish time domain merge handle after, the feedback information after the merging processing of every group of correspondence obtaining is merged processing once more.
Concrete, owing to after frequency domain finishes dealing with, can obtain a plurality of feedback informations (1 to 2 feedback information of every group of correspondence), more a plurality of feedback informations are merged processing, thereby just obtain a feedback information that merges after handling.
Here a plurality of feedback informations after time domain can being finished dealing with carry out logic and " add " processing, thereby obtain a feedback information that merges after handling.
Can certainly adopt other to merge processing mode, but must guarantee to satisfy the requirement that merges processing rule.
If merge the mode of processing is that first time domain merges frequency domain multiplexing again, then among the step b502, after the feedback information of the descending sub frame code word carried correspondence in respectively to every group merges processing, feedback information after the merging of every group of correspondence obtaining handled carries out frequency domain multiplexing to be handled, and obtains feedback signal.
The mode of frequency domain multiplexing has a variety of, no matter which kind of mode all needs to guarantee the rule of following frequency domain multiplexing:
1, the feedback signal that generates through frequency domain multiplexing must have single-carrier property (being that feedback signal takies single carrier wave frequency range);
2, need to guarantee that the base station have reliable detection performance (such as adopting the low-order-modulated mode) to feedback signal, guarantee just (no matter being that terminal is in where feedback signal can be sent to the base station in the sub-district) transmitted and had similar coverage to up feedback transmission and active data;
3, guarantee that the base station can detect feedback information (being ACK/NACK) on a plurality of descending carriers according to feedback signal.
In frequency domain multiplexing, the ACK/NACK that the ACK/NACK on a plurality of carrier waves is considered as on the former subframe gets final product.
If merge the mode of processing is that first frequency domain merges time-domain multiplexed again, then in the steps d 502, after the feedback information of the descending sub frame code word carried correspondence in respectively to every group merges processing, feedback information after the merging of every group of correspondence obtaining handled carries out frequency domain multiplexing to be handled, and obtains feedback signal.
The mode of time-domain multiplexed has a variety of, no matter which kind of mode all needs to guarantee the rule of following time-domain multiplexed:
1, the feedback signal that generates through time-domain multiplexed must have single-carrier property (being that feedback signal takies single carrier wave frequency range);
2, need to guarantee that the base station have reliable detection performance (such as adopting the low-order-modulated mode) to feedback signal, guarantee just (no matter being that terminal is in where feedback signal can be sent to the base station in the sub-district) transmitted and had similar coverage to up feedback transmission and active data;
3, guarantee that the base station can detect feedback information (being ACK/NACK) on a plurality of descending carriers according to feedback signal.
If merge the mode of processing is that time domain merges, and then in the step 503, the continuous sub-frame of uplink of the feedback information after the merging processing of every group of correspondence by up-link carrier is sent.
Wherein, the feedback information after the merging of one group of correspondence is handled sends by a sub-frame of uplink of up-link carrier.
If merge the mode of processing is that frequency domain merges, and then in the step 503, the sub-frame of uplink of the feedback information after the merging processing of every group of correspondence by up-link carrier is sent.
Wherein, the feedback information after the merging of one group of correspondence is handled sends by a sub-frame of uplink of up-link carrier.
If merge the mode of processing is that first time domain merges the frequency domain merging again, then in the step 503, the continuous sub-frame of uplink of the feedback information after the merging processing by up-link carrier is sent.
Wherein, the feedback information after merging is handled sends by a sub-frame of uplink of up-link carrier.
Because a sub-frame of uplink can carry 2 Bit datas, all are for b 0And b 1(b 0And b 1Respectively be 1 bit) can send by a sub-frame of uplink.
Concrete, step 503 can further include:
Step a503, the feedback information that will merge after handling earlier convert feedback signal to.
The mode that converts feedback information to feedback signal has a variety of, no matter which kind of mode all needs to guarantee following conversion process rule:
1, the feedback signal after conversion process has single-carrier property (being that feedback signal takies single carrier wave frequency range);
2, need to guarantee that the base station have reliable detection performance (such as adopting the low-order-modulated mode) to feedback signal, guarantee just (no matter being that terminal is in where feedback signal can be sent to the base station in the sub-district) transmitted and had similar coverage to up feedback transmission and active data.
Such as feedback information being modulated through BPSK modulation or QPSK, obtain a modulation symbol, this modulation symbol is become a single carrier broadcast signal (being feedback signal) after twice spread spectrum (use cyclically shifted sequences to carry out spread spectrum earlier on frequency domain, re-use orthogonal sequence and carrying out spread spectrum on the time domain) handled.
Step b503, definite descending sub frame that merges the feedback information correspondence after handling.
Because the feedback information after merge handling is the feedback information by a plurality of descending sub frame correspondences to be merged to handle and obtains, so the feedback information that merges after handling can corresponding a plurality of descending sub frames.
Step c503, determine the feedback channel in the sub-frame of uplink of descending sub frame correspondence, thereby determine to merge the feedback channel in the sub-frame of uplink of the feedback signal correspondence that the feedback information after handling converts to.
The all corresponding feedback channel of each descending sub frame, the feedback information that merges processing like this will corresponding a plurality of feedback channels, at this moment can select a feedback channel at random or choose according to selecting a feedback channel (choosing according to setting as required) according to predefined.
For the FDD system because the number of sub-frame of uplink and descending sub frame is identical in the system, so each descending sub frame can be looked for a sub-frame of uplink corresponding with it, and then from the sub-frame of uplink of determining the feedback channel of definite correspondence;
For the TDD system, because there are the various configurations ratio in sub-frame of uplink and descending sub frame, then need according to table 1, determine the sub-frame of uplink of each descending sub frame correspondence, and then from the sub-frame of uplink of determining, determine corresponding feedback channel.
Steps d 503, the feedback channel that passes through in definite sub-frame of uplink send feedback signal.
First time domain merges that frequency domain merges earlier again and frequency domain merges a kind of in the time domain merging again if merge the mode of processing and be, then in the step 503, according to the content of feedback information and the corresponding relation of the feedback channel in the sub-frame of uplink, the feedback channel of the sub-frame of uplink of the content correspondence of the feedback information after definite merging is handled
Wherein, the feedback information after merging is handled sends by a sub-frame of uplink of up-link carrier.
Because a sub-frame of uplink can carry 2 Bit datas, all are for b 0And b 1(b 0And b 1Respectively be 1 bit) can send by a sub-frame of uplink.
Concrete, in the step 503, determine to merge the feedback channel of the corresponding sub-frame of uplink of the content of the feedback information after the processing according to the corresponding relation of the feedback channel in the content of the quantity of descending carrier, feedback information and the sub-frame of uplink.
Wherein, the corresponding relation of the content of the quantity of descending carrier, feedback information and the feedback channel in the sub-frame of uplink can preestablish as required.Accordingly, the base station determines by which feedback channel to be received earlier after receiving feedback information, and then according to the content of feedback information in conjunction with the content of feedback information and the corresponding relation of the feedback channel in the sub-frame of uplink, need just can determine whether to retransmit.
Be that 2 bits (being b (0) and b (1)) describe n with feedback information below UL, mBe the feedback letter Taoist monastic name.
Table 2, table 3 and table 4 are that the quantity of descending carrier is respectively 2,3 and at 4 o'clock, the content of feedback information and the corresponding relation of feedback channel.
Need to prove, merging the mode of processing merges if first frequency domain merges time domain again, then the processing mode that merges again in the step 503 of frequency domain in merging of processing mode in the step 503 and above-described first time domain is similar, just the quantity of the descending carrier in table 2～table 4 is the subframe numbering of descending sub frame, repeats no more.
As shown in Figure 6, in the schematic diagram one that embodiment of the invention FDD system is fed back, the ACK/NACK on M in each descending carrier the continuous descending sub frame is carried out time domain merge.
If carry out that time domain merges M continuously last subframe in the descending sub frame be numbered n, the base station retransmits from receiving up feeding back signal to that to send needed minimum treat time delay be T subframe lengths (T=4 in LTE Release 8), then:
Feedback information on the same carrier wave obtains a modulation symbol through modulation, and modulation symbol becomes single-carrier signal after processing such as twice spread spectrum;
I (i ∈ 0,1 ..., the N-1}) feedback information on the individual descending carrier will transmit on sub-frame of uplink n+T+i.
Transmit employed channel number can with carry out in M the subframe that time domain merges, the descending control signaling resource number that belongs to this terminal on first subframe of the actual use of terminal is bound.
So the feedback signal of descending carrier 0 is transmitted on the sub-frame of uplink n+T of up-link carrier;
Similarly, the feedback signal of descending carrier N-1 goes up transmission at the sub-frame of uplink (n+T+N-1) of up-link carrier.
Need to prove that the mode that the FDD system is fed back in mode that the TDD system is fed back and the schematic diagram one is similar, repeats no more.
As shown in Figure 7, in the schematic diagram two that embodiment of the invention FDD system is fed back, in same descending sub frame, the ACK/NACK on N descending carrier carries out frequency domain and merges.
Set capable subframe and be numbered n, then, the feedback information on the same subframe obtains a modulation symbol through modulation, and modulation symbol becomes single-carrier signal after processing such as twice spread spectrum;
Feedback information on the descending sub frame n will transmit on sub-frame of uplink n+T.
Transmit employed channel number can with carry out in N the carrier wave that frequency domain merges, the descending control signaling resource number that belongs to this terminal on first carrier wave of the actual use of terminal is bound.
So the feedback signal of descending sub frame n is transmitted on the sub-frame of uplink n+T of up-link carrier;
Similarly, the feedback signal of descending sub frame n+1 goes up transmission at the sub-frame of uplink (n+T+1) of up-link carrier.
Need to prove that the mode that the FDD system is fed back in mode that the TDD system is fed back and the schematic diagram two is similar, repeats no more.
As shown in Figure 8, in the schematic diagram three that embodiment of the invention FDD system is fed back, in each descending carrier, the ACK/NACK on the individual descending sub frame continuously of M carries out time domain and merges, and 1≤M＜N.
Then, the ACK/NACK on N the descending carrier is divided into the M group in order, then the quantity of every group of interior ACK/NACK is:
Wherein, N Fdd(i) be the quantity of ACK/NACK.
N in the i group Fdd(i) feedback information on the descending carrier will transmit on sub-frame of uplink n+T+i.
Feedback information on a plurality of carrier waves in same group obtains a modulation symbol through modulation, and modulation symbol becomes single-carrier signal after processing such as twice spread spectrum.
Transmitting employed channel number can organize on interior first descending carrier with each, carries out in M the subframe of time domain merging, belongs to the control signal resource numbering binding of this terminal on first subframe of the actual use of terminal.
So descending carrier 0 to descending carrier N FddThe feedback signal of the feedback information conversion after the merging (0) is transmitted on the sub-frame of uplink n+T of up-link carrier;
Similarly, descending carrier N-N Fdd(M-2) feedback signal of the conversion of the feedback information after the merging of descending carrier N-1 goes up transmission at the sub-frame of uplink (n+T+M-1) of up-link carrier.
Shown in 9, in the schematic diagram that embodiment of the invention TDD system is fed back, each carrier wave is carried out time domain merge.
Be numbered n if carry out the subframe of up feedback transmission, then descending sub frame n-k iOn ACK/NACK will be merged into one group of (C iBit) feedback information transmits in this subframe, wherein, i=0,1 ..., M-1, k ∈ K, K are the listed set of table 1.
On the N carrier wave, the feedback information after time domain merges carries out frequency domain and merges, obtain one group (
Figure G2008102473273D0000251
Bit) the feedback information ACK/NACK after the merging.
Feedback information obtains a modulation symbol through modulation, and modulation symbol becomes single-carrier signal after processing such as twice spread spectrum, transmit on sub-frame of uplink n.
Transmit employed channel number can with first descending carrier on, carry out in M the subframe that time domain merges, the control signal resource that belongs to this terminal on first subframe of the actual use of terminal is numbered and is bound.
From the foregoing description as can be seen: the embodiment of the invention is deciphered processing to the descending sub frame code word carried of each descending carrier in a plurality of descending carriers of receiving; According to the result that decoding is handled, determine the feedback information of each descending sub frame code word carried correspondence of each descending carrier; All feedback informations of determining are merged processing; The feedback information that merges after handling is sent by up-link carrier.Because in long-term evolution multi-carrier system, can feed back for the situation that the up-link carrier number is different with the descending carrier number, thereby improved system effectiveness, and this scheme is simple, implement easily, be applicable to FDD system and TDD system, thus can well with LTE Release 8 system compatibles.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (28)

1. a method that sends feedback information is characterized in that, this method comprises:
Descending sub frame code word carried to each descending carrier in a plurality of descending carriers of receiving is deciphered processing;
According to the result that decoding is handled, determine the feedback information of each descending sub frame code word carried correspondence of each descending carrier;
All feedback informations of determining are merged processing;
The feedback information that merges after handling is sent by up-link carrier.
2. the method for claim 1 is characterized in that, described all feedback informations of determining are merged to handle comprise:
Descending sub frame to all descending carriers divides into groups, and the descending sub frame in each group is the descending sub frame in the same descending carrier;
Feedback information to the descending sub frame code word carried correspondence in every group merges processing respectively, the feedback information after the merging that obtains every group of correspondence is handled.
3. method as claimed in claim 2 is characterized in that, the described feedback information that will merge after handling sends by up-link carrier and comprises:
The continuous sub-frame of uplink of feedback information after the merging processing of every group of correspondence by up-link carrier sent;
Wherein, the feedback information after the merging of one group of correspondence is handled sends by a sub-frame of uplink of up-link carrier.
4. method as claimed in claim 2 is characterized in that, if the descending sub frame of a plurality of code words of carrying is arranged in one group, described respectively the feedback information of the descending sub frame correspondence in every group is merged to handle comprise:
The feedback information of the code word correspondence of same code word numbering in a group is merged.
5. as claim 2 or 4 described methods, it is characterized in that, describedly respectively the feedback information of the descending sub frame code word carried correspondence in every group merged after the processing, also comprise before the described feedback information that will merge after handling sends by up-link carrier:
Feedback information after the merging of every group of correspondence obtaining handled merges processing once more.
6. as claim 2 or 4 described methods, it is characterized in that, describedly respectively the feedback information of the descending sub frame code word carried correspondence in every group merged after the processing, also comprise before the described feedback information that will merge after handling sends by up-link carrier:
Feedback information after the merging of every group of correspondence obtaining handled carries out frequency domain multiplexing to be handled, and obtains feedback signal, and described feedback signal takies single carrier wave frequency range;
The described feedback information that will merge after handling sends by up-link carrier and comprises:
According to the content of feedback information and the corresponding relation of the feedback channel in the sub-frame of uplink, the feedback channel of the sub-frame of uplink of the content correspondence of the feedback information after definite merging is handled;
Send described feedback signal by the feedback channel in the sub-frame of uplink of determining.
7. the method for claim 1 is characterized in that, described all feedback informations of determining are merged to handle comprise:
Descending sub frame to all descending carriers divides into groups, and the subframe numbering of the descending sub frame in each group is identical;
Feedback information to the descending sub frame code word carried correspondence in every group merges processing respectively, the feedback information after the merging that obtains every group of correspondence is handled.
8. method as claimed in claim 7 is characterized in that, the described feedback information that will merge after handling sends by up-link carrier and comprises:
The sub-frame of uplink of feedback information after the merging processing of every group of correspondence by up-link carrier sent;
Wherein, the feedback information after the merging of one group of correspondence is handled sends by a sub-frame of uplink of up-link carrier.
9. method as claimed in claim 7 is characterized in that, described respectively the feedback information of the descending sub frame code word carried correspondence in every group is merged to handle comprise:
Determine at least one descending sub frame in this group, the feedback information of the descending sub frame code word carried correspondence determined is merged processing;
Feedback information to the remaining descending sub frame code word carried correspondence in this group merges processing.
10. method as claimed in claim 7 is characterized in that, if the descending sub frame of a plurality of code words of carrying is arranged in one group, described respectively the feedback information of the descending sub frame code word carried correspondence in every group is merged to handle comprise:
The feedback information corresponding respectively by a plurality of code words of same descending sub frame carrying merges processing, and the feedback information after merging is handled is as the feedback information of this descending sub frame code word carried correspondence;
Feedback information to the descending sub frame code word carried correspondence in this group merges processing; Or
The feedback information corresponding respectively by a plurality of code words of same descending sub frame carrying merges processing, and the feedback information after merging is handled is as the feedback information of this descending sub frame code word carried correspondence;
Determine at least one descending sub frame in this group, the feedback information of the descending sub frame code word carried correspondence determined is merged processing;
Feedback information to the remaining descending sub frame code word carried correspondence in this group merges processing; Or
The feedback information of the code word correspondence of same code word numbering in a group is merged.
11. as claim 7,9 or 10 described methods, it is characterized in that, describedly respectively the feedback information of the descending sub frame code word carried correspondence in every group is merged after the processing, also comprises before the described feedback information that will merge after handling sends by up-link carrier:
Feedback information after the merging of every group of correspondence obtaining handled merges processing once more.
12. as claim 7,9 or 10 described methods, it is characterized in that, describedly respectively the feedback information of the descending sub frame code word carried correspondence in every group is merged after the processing, also comprises before the described feedback information that will merge after handling sends by up-link carrier:
Feedback information after the merging of every group of correspondence obtaining handled carries out time-domain multiplexed to be handled, and obtains feedback signal, and described feedback signal takies single carrier wave frequency range;
The described feedback information that will merge after handling sends by up-link carrier and comprises:
According to the content of feedback information and the corresponding relation of the feedback channel in the sub-frame of uplink, the feedback channel of the sub-frame of uplink of the content correspondence of the feedback information after definite merging is handled;
Send described feedback signal by the feedback channel in the sub-frame of uplink of determining.
13., it is characterized in that when the feedback information that merges processing all was response message ACK, the feedback information that merges after handling was ACK as claim 2 or 7 described methods;
The feedback information that merges processing all is wrong responses information NACK, and when not reaching the number of retransmissions of setting, the feedback information that merges after handling is NACK.
14., it is characterized in that the described feedback information that will merge after handling sends by up-link carrier and comprises as claim 3 or 8 described methods:
Convert the feedback information after the merging processing of every group of correspondence to feedback signal, described feedback signal takies single carrier wave frequency range;
According to the feedback channel in the sub-frame of uplink of the descending sub frame correspondence in every group, determine the feedback channel in the sub-frame of uplink of the feedback signal correspondence that every group feedback information converts to;
Send described feedback signal by the feedback channel in the sub-frame of uplink of determining.
15. a terminal is characterized in that, this terminal comprises:
Receiving processing module is used for the descending sub frame code word carried of a plurality of each descending carrier of descending carrier of receiving is deciphered processing;
The information determination module is used for the result according to the decoding processing, determines the feedback information of each descending sub frame code word carried correspondence of each descending carrier;
Processing module is used for all feedback informations of determining are merged processing;
Sending module, the feedback information that is used for merging after handling sends by up-link carrier.
16. terminal as claimed in claim 15 is characterized in that, described processing module comprises:
First grouping module is used for the descending sub frame of all descending carriers is divided into groups, and the descending sub frame in each group is the descending sub frame in the same descending carrier;
First merges processing module, is used for respectively the feedback information of every group descending sub frame code word carried correspondence is merged processing, the feedback information after the merging that obtains every group of correspondence is handled.
17. terminal as claimed in claim 16 is characterized in that, described sending module is used for:
The continuous sub-frame of uplink of feedback information after the merging processing of every group of correspondence by up-link carrier sent;
Wherein, the feedback information after the merging of one group of correspondence is handled sends by a sub-frame of uplink of up-link carrier.
18. terminal as claimed in claim 16 is characterized in that, described first merges processing module is used for:
When the descending sub frame of a plurality of code words of carrying is arranged in one group, the feedback information of the code word correspondence of same code word numbering in a group is merged.
19., it is characterized in that described first merges processing module also is used for as claim 16 or 18 described terminals:
Respectively the feedback information of the descending sub frame code word carried correspondence in every group is merged after the processing, described sending module sends before the feedback information, and the feedback information after the merging of every group of correspondence obtaining is handled merges processing once more.
20., it is characterized in that described first merges processing module also is used for as claim 16 or 18 described terminals:
After the feedback information of the descending sub frame code word carried correspondence in respectively to every group merges processing, described sending module sends before the feedback information, feedback information after the merging of every group of correspondence obtaining handled carries out frequency domain multiplexing to be handled, obtain feedback signal, described feedback signal takies single carrier wave frequency range;
Described sending module is used for:
According to the content of feedback information and the corresponding relation of the feedback channel in the sub-frame of uplink, the feedback channel of the sub-frame of uplink of the content correspondence of the feedback information after definite merging is handled sends described feedback signal by the feedback channel in the sub-frame of uplink of determining.
21. terminal as claimed in claim 15 is characterized in that, described processing module comprises:
Second grouping module is used for the descending sub frame of all descending carriers is divided into groups, and the subframe numbering of the descending sub frame in each group is identical;
Second merges processing module, is used for respectively the feedback information of every group descending sub frame code word carried correspondence is merged processing, the feedback information after the merging that obtains every group of correspondence is handled.
22. terminal as claimed in claim 21 is characterized in that, described sending module is used for:
The sub-frame of uplink of feedback information after the merging processing of every group of correspondence by up-link carrier sent;
Wherein, the feedback information after the merging of one group of correspondence is handled sends by a sub-frame of uplink of up-link carrier.
23. terminal as claimed in claim 21 is characterized in that, described second merges module is used for:
Determine at least one descending sub frame in this group, the feedback information of the descending sub frame code word carried correspondence determined is merged processing, the feedback information of the remaining descending sub frame code word carried correspondence in this group is merged processing.
24. terminal as claimed in claim 21 is characterized in that, if the descending sub frame of a plurality of code words of carrying is arranged in one group, described second merges module is used for:
The feedback information corresponding respectively by a plurality of code words of same descending sub frame carrying merges processing, and the feedback information after merging is handled is as the feedback information of this descending sub frame code word carried correspondence;
Feedback information to the descending sub frame code word carried correspondence in this group merges processing; Or
The feedback information corresponding respectively by a plurality of code words of same descending sub frame carrying merges processing, and the feedback information after merging is handled is as the feedback information of this descending sub frame code word carried correspondence;
Determine at least one descending sub frame in this group, the feedback information of the descending sub frame code word carried correspondence determined is merged processing;
Feedback information to the remaining descending sub frame code word carried correspondence in this group merges processing; Or
The feedback information of the code word correspondence of same code word numbering in a group is merged.
25., it is characterized in that described second merges processing module also is used for as claim 21,23 or 24 described terminals:
Respectively the feedback information of the descending sub frame code word carried correspondence in every group is merged after the processing, described sending module sends before the feedback information, and the feedback information after the merging of every group of correspondence obtaining is handled merges processing once more.
26., it is characterized in that described second merges processing module also is used for as claim 21,23 or 24 described terminals:
After the feedback information of the descending sub frame code word carried correspondence in respectively to every group merges processing, described sending module sends before the feedback information, feedback information after the merging of every group of correspondence obtaining handled carries out time-domain multiplexed to be handled, obtain feedback signal, described feedback signal takies single carrier wave frequency range;
Described sending module is used for:
According to the content of feedback information and the corresponding relation of the feedback channel in the sub-frame of uplink, the feedback channel of the sub-frame of uplink of the content correspondence of the feedback information after definite merging is handled sends described feedback signal by the feedback channel in the sub-frame of uplink of determining.
27., it is characterized in that when the feedback information that merges processing all was response message ACK, the feedback information that merges after handling was ACK as claim 16 or 21 described terminals;
The feedback information that merges processing all is wrong responses information NACK, and when not reaching the number of retransmissions of setting, the feedback information that merges after handling is NACK.
28., it is characterized in that described sending module is used for as claim 17 or 22 described terminals:
Convert the feedback information after the merging processing of every group of correspondence to feedback signal, according to the feedback channel in the sub-frame of uplink of the descending sub frame correspondence in every group, determine the feedback channel in the sub-frame of uplink of the feedback signal correspondence that every group feedback information converts to, send described feedback signal by the feedback channel in the sub-frame of uplink of determining, described feedback signal takies single carrier wave frequency range.
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CN103516501B (en) * 2012-06-29 2017-05-03 电信科学技术研究院 Method, system and device for sending and receiving feedback information
WO2019134140A1 (en) * 2018-01-05 2019-07-11 Oppo广东移动通信有限公司 Method, apparatus and system for sending feedback response information and method, apparatus and system for receiving feedback response information
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