CN101795177B - A kind of retransmission confirmation information feedback method, system and equipment - Google Patents
A kind of retransmission confirmation information feedback method, system and equipment Download PDFInfo
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Abstract
The present invention proposes retransmission confirmation information feedback method, system and equipment in a kind of multicarrier system. The method comprises: user equipment (UE) receives multiple downlink data packet that base station sends, and produces M the retransmission confirmation information corresponding to described multiple downlink data packet, and wherein said M is greater than 4; Described UE is divided into k group according to rule of classification by a described M retransmission confirmation information, and according to the mapping relations of retransmission confirmation information and available feedback channel number, feedback information, determine k group available feedback channel number and feedback information corresponding to described k group retransmission confirmation information; Described UE sends to described base station by described k group feedback information in the described available feedback channel number in k feedback channel of a sub-frame of uplink. Method, system and equipment proposed by the invention be easy to realize, be applicable to FDD and TDD system simultaneously, and can well with LTE? Release? 8 system compatibles.
Description
Technical field
The present invention relates generally to mobile communication technology field, relate in particular to the anti-of retransmission confirmation information in multicarrier systemFeedback.
Background technology
For long-term evolution multi-carrier system, for supporting the system bandwidth wider than LTE system, such as 100MHz, oneMay be the frequency spectrum that directly distributes 100M bandwidth, be illustrated in figure 1 single-frequency spectral system schematic; One may be existing by distributing toSome spectrum aggregatings of some systems get up, and gather into large bandwidth and supply with long-term evolution multi-carrier system use, and user may account forCarry out downlink transfer with M >=1 carrier wave, N >=1 carrier wave carries out uplink, is illustrated in figure 2 frequency spectrum polymerization system signalFigure.
LTE (LongTermEvolution, the Long Term Evolution) system that standardization effort has completed substantially at present(Rel-8) basic transmission plan is as follows: FDD system and TDD are respectively as shown in Figure 3,4. For each work carrier wave, fixed respectivelyJustice downlink signaling, downlink data, up signaling and upstream data, and transmission relation each other. Upstream control signalingThe two ends of band occupancy, are used frequency-hopping mode transmission, and, in two time slots in a subframe, upstream control signaling will takeDifferent band transmissions.
In the time having opened HARQ function in downlink transfer, UE (UserEquipment, subscriber equipment) is under completing onceAfter row data receiver, to whether need the signaling retransmitting, i.e. ACK (confirmation)/NACK (non-confirmation), wherein ACK shape to base station feedbackState represents not retransmit, and NACK STA representation needs to retransmit, if do not detect, any information uses DTX STA representation.
In LTE system, the packet in each subframe is independently encoded, therefore ACK/NACK information is based on each subframeOn packet obtain. If carry out many code words (codeword) transmission, system is by usage space multiplex technique, will beOn same physical resource, multiplexing transmission belongs to same user's multiplex data stream, will comprise many in the packet of a subframeIndividual data flow, the data in different data flow will independently be encoded, and become code word. Now to inciting somebody to action after each codeword decodingObtain 1 independently ACK/NACK, LTE system is supported at most two codeword transmission at present.
In descending control signaling when transmission, is carried out in base station, can be the exclusive resource of each user assignment, but for uplink ACK/The feedback transmission of NACK, user does not know that other users use channel situation, and resource punching occurs in the time feeding back for fear of userProminent, the UE feeding back is by the resource number (n of the corresponding descending control signaling of downlink data packet receiving according to itCCE)，Calculate it and carry out resource or the channel number (n that ACK/NACK feedback is usedUL), nULBe one about NCCEFunction nUL＝f(nCCE)+NUL, wherein NULFor high-rise configuration parameter, this function meets one-to-one relationship, i.e. different NCCEAfter mapping, can obtainDifferent nUL。
For LTEFDD system, its ascending-descending subframes quantity is always identical, therefore descending sub frame always corresponding thisA sub-frame of uplink carries out ACK/NACK feedback transmission. But for LTETDD system, because its ascending-descending subframes exists multiple joiningPut ratio, in the time that descending number of sub frames is greater than sub-frame of uplink and counts, UE will feed back on multiple descending sub frames in a sub-frame of uplinkACK/NACK information, and each descending sub frame has the feedback channel corresponding with it numbering.
In LTETDD system, support at present multiple ACK/NACK information to carry out multiplexing transmission, in the system of setting up departments one upIn subframe, to carry M the ACK/NACK feedback information on descending sub frame, wherein 1 < M≤4, the method for multiplexing transmission is:
First, the ACK/NACK in multiple code words in each descending sub frame is carried out obtain after logic add one compoundACK/NACK；
According to the concrete condition of the corresponding compound ACK/NACK of M descending sub frame, table look-up 3～5, obtain 2 bit feedback lettersBreath b (0), the channel number n that b (1) and transmission are usedUL, wherein:
In sub-frame of uplink, have M channel number, unique corresponding with M descending sub frame respectively, subframe m is corresponding anti-Feedback channel number is nUL，m，m∈{0，1，...，M-1}。
Table 1:TDD pattern uplink-downlink configuration (Uplink-downlinkconfigurations)
Wherein, Uplink-downlinkconfiguration is uplink-downlink configuration, Downlink-to-UplinkSwitch-pointperiodicity is descending-up switching point cycle, and Subframenumber is subframe numbers,Wherein D represents descending Downlink, and U represents up Uplink.
To b (0), b (1) carries out the signal obtaining after Base-Band Processing, will be numbered nULChannel on transmit. UnderTable has provided the descending sub frame position corresponding at same ascending resource, and corresponding M number is 1 to 4.
Under table 2:TDD, line correlation arranges index (DownlinkassociationsetindexforTDD) K:{k0，k1，...kM-1}
Base station is by judging in M available feedback channel have data on which channel, and the data on feedback channel are enteredRow detects, demodulation, obtains concrete feedback information, 1～3 can know M the ACK/NACK that belongs to same UE by tabling look-upState, thus judge M the data receiver situation on descending sub frame.
Feedback composition when table 3:M=2
| HARQ-ACK(1)，HARQ-ACK(2) | nUL | b(0)，b(1) |
| ACK，ACK | nUL，1 | 1，1 |
| ACK，NACK/DTX | nUL，0 | 0，1 |
| NACK/DTX，ACK | nUL，1 | 0，0 |
| NACK/DTX，NACK | nUL，1 | 1，0 |
| NACK，DTX | nUL，0 | 1，0 |
| DTX，DTX | N/A | N/A |
Feedback composition when table 4:M=3
| HARQ-ACK(1)，HARQ-ACK(2)， HARQ-ACK(3) | nUL | b(0)，b(1) |
| ACK，ACK，ACK | nUL，2 | 1，1 |
| ACK，ACK，NACK/DTX | nUL，1 | 1，1 |
| ACK，NACK/DTX，ACK | nUL，0 | 1，1 |
| ACK，NACK/DTX，NACK/DTX | nUL，0 | 0，1 |
| NACK/DTX，ACK，ACK | nU1，2 | 1，0 |
| NACK/DTX，ACK，NACK/DTX | nUL，1 | 0，0 |
| NACK/DTX，NACK/DTX，ACK | nUL，2 | 0，0 |
| DTX，DTX，NACK | nUL，2 | 0，1 |
| DTX，NACK，NACK/DTX | nUL，1 | 1，0 |
| NACK，NACK/DTX，NACK/DTX | nUL，0 | 1，0 |
| DTX，DTX，DTX | N/A | N/A |
Feedback composition when table 5:M=4
| HARQ-ACK(0)，HARQ-ACK(1)， HARQ-ACK(2)，HARQ-ACK(3) | nPUCCH (1) | b(0)，b(1) |
| ACK，ACK，ACK，ACK | nPUCCH，1 (1) | 1，1 |
| ACK，ACK，ACK，NACK/DTX | nPUCCH，1 (1) | 1，0 |
| NACK/DTX，NACK/DTX，NACK，DTX | nPUCCH，2 (1) | 1，1 3 --> |
| ACK，ACK，NACK/DTX，ACK | nPUCCH，1 (1) | 1，0 |
| NACK，DTX，DTX，DTX | nPUCCH，0 (1) | 1，0 |
| ACK，ACK，NACK/DTX，NACK/DTX | nPUCCH，1 (1) | 1，0 |
| ACK，NACK/DTX，ACK，ACK | nPUCCH，3 (1) | 0，1 |
| NACK/DTX，NACK/DTX，NACK/DTX，NACK | nPUCCH，3 (1) | 1，1 |
| ACK，NACK/DTX，ACK，NACK/DTX | nPUCCH，2 (1) | 0，1 |
| ACK，NACK/DTX，NACK/DTX，ACK | nPUCCH，0 (1) | 0，1 |
| ACK，NACK/DTX，NACK/DTX，NACK/DTX | nPUCCH，0 (1) | 1，1 |
| NACK/DTX，ACK，ACK，ACK | nPUCCH，3 (1) | 0，1 |
| NACK/DTX，NACK，DTX，DTX | nPUCCH，1 (1) | 0，0 |
| NACK/DTX，ACK，ACK，NACK/DTX | nPUCCH，2 (1) | 1，0 |
| NACK/DTX，ACK，NACK/DTX，ACK | nPUCCH，3 (1) | 1，0 |
| NACK/DTX，ACK，NACK/DTX，NACK/DTX | nPUCCH，1 (1) | 0，1 |
| NACK/DTX，NACK/DTX，ACK，ACK | nPUCCH，3 (1) | 0，1 |
| NACK/DTX，NACK/DTX，ACK，NACK/DTX | nPUCCH，2 (1) | 0，0 |
| NACK/DTX，NACK/DTX，NACK/DTX，ACK | nPUCCH，3 (1) | 0，0 |
| DTX，DTX，DTX，DTX | N/A | N/A |
The essence of the method be on the state to be feedback and feedback channel and feedback channel that are made up of M ACK/NACKBetween the information of transmission, set up mapping relations one to one. Do not considering under the condition of DTX state M ACK/NACK energyThe status number of enough compositions is 2M. And the status number that feedback channel in said method and signal can form is M22. As 1 < M≤ 4 o'clock, 2M＝＜M·22, the method can normally be worked and be represented feedback information state; In the time of M >=5,2M＞M·22, now shouldMethod cannot be worked.
Use the long evolving system of spectrum aggregating technology, when CU X descending carrier transmission data, each descendingThe processing such as the data on carrier wave will independently be encoded, modulation, UE arrives X road phase by parallel receive in a descending sub frameData independently mutually, and to carry out respectively demodulation, decoding to X circuit-switched data, thus produce X independently ACK/NACK feedback letterBreath, now UE need to transmit this X ACK/NACK feedback signal in a sub-frame of uplink simultaneously. For TDD system, if systemMiddle sub-frame of uplink quantity is less than descending sub frame quantity, and a sub-frame of uplink also will carry the ACK/NACK on multiple descending sub framesFeedback signal.
About using in the research of long evolving system of spectrum aggregating technology, there is M >=5 downlink data packet at presentThe situation that corresponding ACK/NACK informational needs feeds back in a sub-frame of uplink, anti-for ACK/NACK in this kind of situationFeedback does not also have implementation at present.
Summary of the invention
In order one of to address the above problem, the present invention proposes the retransmission confirmation information feedback side in a kind of multicarrier systemMethod, comprising: user equipment (UE) receives multiple downlink data packet that base station sends, and generation corresponds respectively to described multiple lower line numberAccording to M retransmission confirmation information of bag, wherein said M is greater than 4; Described UE according to rule of classification by a described M retransmission confirmation informationBe divided into k group, and according to the mapping relations of retransmission confirmation information and available feedback channel number, feedback information, determine corresponding respectivelyIn k group available feedback channel number and the feedback information of described k group retransmission confirmation information; Described UE is by described k group feedback informationIn described available feedback channel number in k feedback channel of a sub-frame of uplink, send to described base station.
According to embodiments of the invention, described method also comprises: if the number of described multiple downlink data packet is less than etc.In the number N of the available uplink feedback channel of 4 times, described M equals the number of described multiple downlink data packet; If under describedThe number of row packet is greater than 4N, the corresponding multiple retransmission confirmation informations of described multiple downlink data packet carry out merging placeReason, generates a described M retransmission confirmation information, so that M is less than or equal to 4N.
According to embodiments of the invention, described rule of classification comprises according to reserved feedback resources number determines described k groupNumber p1, the p2 of each group in retransmission confirmation information ... pk, wherein said p1, p2 ... pk is less than or equal to 4.
According to embodiments of the invention, described rule of classification comprises that by described k value be to be not more than available uplink feedbackThe number N of channel.
According to embodiments of the invention, described rule of classification comprise by described k value for make described p1, p2,... pk meets the minimum of a value that described reserved feedback resources number requires.
According to embodiments of the invention, described rule of classification is to equal described available uplink feedback letter by described k valueThe number N in road.
According to embodiments of the invention, described rule of classification comprises and a described M retransmission confirmation information being divided on average or notAverage k group.
According to embodiments of the invention, described rule of classification comprises fixing rule of classification. Described method also comprises: described inUE receives described rule of classification by signaling, and described signaling comprises broadcast signaling and/or high-level signaling.
According to embodiments of the invention, described rule of classification comprises dynamic rule of classification. Described method also comprises: described inUE receives described rule of classification by signaling, and described signaling comprises: high-level signaling and/or descending control indication signaling.
According to embodiments of the invention, described rule of classification comprises the packet of the multiple descending sub frames to same carrier waveCorresponding retransmission confirmation information preferentially divides into groups.
According to embodiments of the invention, described rule of classification comprises the packet institute to same descending sub frame in multicarrierCorresponding retransmission confirmation information preferentially divides into groups.
The invention allows for a kind of system, comprise base station and user equipment (UE). Described base station, for sending to described UEMultiple downlink data packet, and send rule of classification by signaling to described UE, and receive described UE according to described rule of classificationThe M corresponding to described multiple downlink data packet sending in a subframe retransmission confirmation information, wherein said M is greater than 4. InstituteState UE, the multiple downlink data packet that send for receiving described base station, produce the M that corresponds respectively to described multiple downlink data packetIndividual retransmission confirmation information, and according to described rule of classification, a described M retransmission confirmation information is divided into k group, and according to retransmitting reallyRecognize the mapping relations of information and available feedback channel number, feedback information, determine and correspond respectively to described k group retransmission confirmation informationThe available feedback channel number of k group and feedback information, and by described k group feedback information respectively k an of sub-frame of uplinkIn described available feedback channel number in feedback channel, send to described base station.
The invention allows for a kind of base station, comprising: determination module, it is for determining rule of classification; Sending module, its useIn send multiple downlink data packet to UE, and send described rule of classification by signaling to described UE; Receiver module, its forReceive according to described rule of classification the M corresponding to described multiple downlink data packet the re-transmission that described UE sends in a subframeConfirmation, wherein M is greater than 4.
The invention allows for a kind of user equipment (UE), comprising: receiver module, its for receive base station send multiple underRow packet, and receive the rule of classification that described base station sends by signaling, and generation corresponds respectively to described multiple descendingThe M of a packet retransmission confirmation information, wherein said M is greater than 4; Grouping module, its for according to described rule of classification by described MIndividual retransmission confirmation information is divided into k group, and closes according to the mapping of retransmission confirmation information and available feedback channel number, feedback informationSystem, determines the k group available feedback channel number and the feedback information that correspond respectively to described k group retransmission confirmation information; Sending module,Its for by described k group feedback information respectively in the described available feedback channel volume of k feedback channel of a sub-frame of uplinkOn number, send to described base station.
The invention allows for the retransmission confirmation information feedback method in another kind of multicarrier system, comprising: subscriber equipmentUE receives M the downlink data packet that base station sends, and produces M the retransmission confirmation information corresponding to a described M downlink data packet,Wherein said M is greater than 4; Described UE is according to the mapping relations of retransmission confirmation information and feedback channel, feedback information, determine corresponding toN feedback channel of a described M retransmission confirmation information numbered and N group feedback information; Described UE organizes feedback information one by described NOn described N feedback channel of individual sub-frame of uplink, send to described base station.
According to embodiments of the invention, described mapping relations comprise the described feedback that a described M retransmission confirmation information is correspondingThe number N of channel meets Wherein said k is the bit carrying in each described feedback channelNumber.
According to embodiments of the invention, the bit number k carrying in described each feedback channel is 1 or 2.
According to embodiments of the invention, the mapping relations between described retransmission confirmation information and feedback channel, feedback informationFor the relation of shining upon one by one.
According to embodiments of the invention, described method also comprises: if a packet comprises multiple code words, to belonging toThe corresponding retransmission confirmation information of described multiple code words in same packet merges processing, generates a retransmission confirmationBreath.
According to embodiments of the invention, described UE obtains described retransmission confirmation information and feedback letter by read memoryThe mapping relations of road, feedback information.
The invention allows for a kind of system, comprise base station and user equipment (UE). Described base station, for sending to described UEM downlink data packet, and receive the feedback information that described UE sends in the feedback channel of a sub-frame of uplink, according to retransmitting reallyRecognize the mapping relations of Information and feedback channel, feedback information and obtain the retransmission confirmation information corresponding to a described M downlink data packet,Wherein said M is greater than 4. Described UE, M the downlink data packet sending for receiving base station, produces corresponding to described M lower line numberAccording to M retransmission confirmation information of bag, and according to the mapping relations of described retransmission confirmation information and feedback channel, feedback information, trueFixed N feedback channel corresponding to a described M retransmission confirmation information and N organize feedback information, and described N is organized to feedback information existOn described N feedback channel of a sub-frame of uplink, send to described base station.
The invention allows for a kind of base station, comprising: sending module, it is for sending M downlink data packet to described UE,Wherein said M is greater than 4; Receiver module, the feedback that it sends at the feedback channel of a sub-frame of uplink for receiving described UEInformation; Acquisition module, it is for obtaining corresponding to institute according to the mapping relations of retransmission confirmation information and feedback channel, feedback informationState the retransmission confirmation information of M downlink data packet.
According to embodiments of the invention, described base station also comprises memory module. Described memory module is used for storing described heavyPass the mapping relations of confirmation and feedback channel, feedback information. Described acquisition module also for read described memory module withObtain the mapping relations of described retransmission confirmation information and feedback channel, feedback information.
The invention allows for a kind of user equipment (UE), comprising: receiver module, it is under the M that receives base station and sendRow packet, and produce M the retransmission confirmation information corresponding to a described M downlink data packet, wherein said M is greater than 4; Determine mouldPiece, it,, for according to the mapping relations of described retransmission confirmation information and feedback channel, feedback information, is determined corresponding to described MThe N of a retransmission confirmation information feedback channel and N group feedback information; Sending module, it is for organizing feedback information at one by described NOn described N feedback channel of sub-frame of uplink, send to base station.
According to embodiments of the invention, described UE also comprises memory module. Described memory module is used for storing described re-transmissionThe mapping relations of confirmation and feedback channel, feedback information. Described determination module is also for reading described memory module to obtainObtain the mapping relations of described retransmission confirmation information and feedback channel, feedback information.
Message feedback method, system and equipment proposed by the invention, realized and used the long-term of spectrum aggregating technologyIn evolution system, UE uses the method for multi-channel multiplexing transmission in a sub-frame of uplink, to transmit multiple downlink data packet correspondenceThe scheme of retransmission confirmation information. Scheme of the present invention is easy to implement, is applicable to FDD and TDD system simultaneously, and can be veryGood and LTERelease8 system compatible.
Brief description of the drawings
The present invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodimentsObviously and easily understand, wherein:
Fig. 1 is single-frequency spectral system schematic;
Fig. 2 is frequency spectrum polymerization system schematic diagram;
Fig. 3 is FDD system schematic;
Fig. 4 is TDD system schematic;
Fig. 5 is the flow chart of an embodiment of retransmission confirmation information feedback method of the present invention;
Fig. 6 is the functional structure chart of an embodiment of system of the present invention;
Fig. 7 is the flow chart of an embodiment of retransmission confirmation information feedback method of the present invention;
Fig. 8 is the functional structure chart of an embodiment of system of the present invention.
Detailed description of the invention
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings. Below by referenceThe embodiment that accompanying drawing is described is exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
The present invention proposes a kind of message feedback method, be illustrated in figure 5 a reality of message feedback method of the present inventionExecute routine flow chart, the method 100 comprises:
S101:UE receives multiple downlink data packet that base station sends, and generation corresponds respectively to described multiple downlink dataM retransmission confirmation information of bag, wherein said M is greater than 4. Wherein, retransmission confirmation information can comprise ACK, NACK, DTX etc.ACK represents correct reception, represents that base station does not need to retransmit, and NACK represents correctly not receive, and DTX represents not receive, tableShow that base station need to retransmit.
As embodiments of the invention, if the number of multiple downlink data packet is less than or equal to the available uplink feedback of 4 timesThe number N of channel, M equals the number of multiple downlink data packet; If the number of downlink data packet is greater than 4N, under multipleThe corresponding multiple retransmission confirmation informations of row packet merge processing, for example, carry out logic add, generate M and retransmit confirmationInformation, so that the number M of retransmission confirmation information to be sent is less than or equal to 4N.
S102:UE is divided into k group according to rule of classification by M retransmission confirmation information, and according to retransmission confirmation information and availableThe mapping relations of feedback channel numbering, feedback information, determine the k group available feedback letter that corresponds respectively to k group retransmission confirmation informationRoad numbering and feedback information. Wherein, the channel number of k group available feedback is respectively on k feedback channel, and feedback channel usesPUCCH (Physical Uplink Control Channel) can only use a PUCCH in single-carrier system, in a PUCCH, can use M=4 feedback channel numberings. For multicarrier system, may use k PUCCH, namely can there is k uplink feedback letterRoad.
S103:UE is the available feedback channel volume in k feedback channel of a sub-frame of uplink by above-mentioned k group feedback informationOn number, send to described base station.
As embodiments of the invention, rule of classification can comprise according to reserved feedback resources number determines k group ACK/Number p1, the p2 of each group in NACK ... pk. For example, according to the method for existing 1 < P≤4, the M of M >=5 is divided into kGroup, total M=P1+P2+...Pk. So 2P1+2P2+...2Pk＝＜(P1+P2+...Pk)·22, wherein, 1 < Pk≤4. ThisSample, the number of every group of retransmission confirmation information is less than the number that can carry in existing system, can confirm according to existing re-transmissionThe mapping relations of Information and feedback channel, feedback information, for example above-mentioned table 3-5, determines respectively anti-to every group of retransmission confirmation informationFeedback channel nULWith feedback information b (0), b (1).
As embodiments of the invention, above-mentioned grouping number k be equal to or less than operable in multicarrier system onThe number N of row feedback channel, i.e. N >=k.
As embodiments of the invention, can pay the utmost attention to the restriction of group number, first determine the value of k.
As embodiments of the invention, can use minimum group to count k. For example, as far as possible anti-in each uplink feedback channelPresent 4 corresponding retransmission confirmation informations of downlink data packet. Adopt this embodiment, can effectively reduce uplink transmission power.
As an alternative embodiment of the invention, can use the maximum group to count k, for example, use maximum number as far as possibleUplink feedback channel sends retransmission confirmation information, i.e. k=N.
As embodiments of the invention, the value of the number P of every group of retransmission confirmation information is can right and wrong average. For example,The retransmission confirmation information information of M >=5 downlink data packet is divided into some groups, and wherein every group meets 1 < Pk≤4. For example, M=5Can be divided into N=2 group according to unalterable rules, P1=2 and P2=3, or P1=4 and P2=1, the downlink data packet in every groupFeed back according to existing feedback method. This method needs between base station and subscriber equipment for each M value and up anti-Feedback channel number provides the mapping relations of a grouping.
The beneficial effect of this embodiment is to take reserved feedback resources into consideration with scheduling. For example,, if do not examinedConsider reserved resource so in the situation for M=5, if there is N=2, in the time of reserved resource, all will reserve the money of M=4 for every groupSource, if determined P1=4, the grouping of P2=1, so reserved resource can be just M=4 and M=1, can save reservedResource.
As embodiments of the invention, the value of the number P of every group of retransmission confirmation information can be average packet, according toOne group of P downlink data packet method average packet, wherein to meet 1 < P≤4, group number is:WhereinRepresent the business of M/P to round up, wherein, in the time of MmodP > 0, the size of one of them group is:WhereinRepresent the business of M/P to round downwards. For example, M=5, N uplink feedback channel group counted N=2, P1=3 so, P2=2.
As one embodiment of the present of invention, can within the regular hour, fix and use certain rule of classification, adoptWith fixing rule of classification.
As one embodiment of the present of invention, can within the regular hour according to change in resources situation, adopt movingThe rule of classification of state.
For example, N the uplink feedback channel number that in multicarrier system, same subframe is used, can be limited because of ascending powerRule of classification is changed. For example M=8, according to the principle N=3 of mean allocation, is divided into P1=3, P2=3, and P3=2, when upperWhen row power limited, next sub-frame of uplink can only transmit 2 uplink feedback channel, needs so to change N=2, is divided into P1=4,P2＝4。
Again for example, can reduce and need to redefine rule of classification according to uplink feedback channel number.
As embodiments of the invention, the notice of above-mentioned rule of classification needs the signaling instruction between base station and user logicalKnow. For example, fixing rule of classification relative cycle is longer, can think a kind of semi-static variation, and base station can be by sending outSend broadcast signaling and/or high-level signaling notifying user equipment. Again for example, dynamic rule of classification transformation period is very fast, grouping spiritLive, base station can be by sending high-level signaling and/or descending control indication signaling notifying user equipment.
As one embodiment of the present of invention, arrangement when grouping or counting sequence can be the same carrier wave of preferential countingMultiple descending sub frames, when in multicarrier system, feedback priority is arranged the multiple descending sub frames in same carrier wave in every groupPacket resource, then represent successively the corresponding ACK/NACK information of multiple downlink data packet of multiple subframes.
As one embodiment of the present of invention, rule of classification can preferentially be counted the same descending of multiple carrier waves in the time of groupingSubframe, in the time of multicarrier system, feedback priority is arranged the packet resource in same descending sub frame in every group, then represents successivelyThe corresponding ACK/NACK information of multiple downlink data packet of multiple carrier waves.
Be illustrated in figure 6 the functional structure chart of an embodiment of system of the present invention, described system comprises base station 200 HesUE300。
Wherein, base station 200 is for send multiple downlink data packet to UE300, and sends grouping by signaling to UE300Rule, and receive according to rule of classification the M corresponding to described multiple downlink data packet the weight that UE300 sends in a subframePass confirmation, wherein M is greater than 4.
UE300, for receiving multiple downlink data packet that base station 200 sends, produces and corresponds respectively to described multiple lower line numberAccording to M retransmission confirmation information of bag, and according to rule of classification, a described M retransmission confirmation information is divided into k group, and according to re-transmissionThe mapping relations of confirmation and available feedback channel number, feedback information, determine and correspond respectively to described k group retransmission confirmationK group available feedback channel number and the feedback information of breath, and it is anti-at k of a sub-frame of uplink respectively that k is organized to feedback informationIn available feedback channel number in feedback channel, send to base station 200.
As shown in Figure 6, base station 200 comprises determination module 201, sending module 202 and receiver module 203. Wherein, determine mouldPiece 201 is for determining rule of classification; Sending module 202 is for send multiple downlink data packet to UE300, and by signaling toUE300 sends described rule of classification; Receiver module 203 sends a subframe for receiving UE300 according to rule of classificationCorresponding to M retransmission confirmation information of described multiple downlink data packet, wherein M is greater than 4.
As shown in Figure 6, UE300 comprises receiver module 301, grouping module 302 and sending module 303. Wherein, receiver moduleThe 301 multiple downlink data packet that send for receiving base station 200, and receive the rule of classification that base station 200 sends by signaling,And producing M the retransmission confirmation information that corresponds respectively to described multiple downlink data packet, wherein said M is greater than 4; Grouping module302 for according to rule of classification, M retransmission confirmation information being divided into k group, and according to retransmission confirmation information and available feedback letterThe mapping relations of road numbering, feedback information, determine the k group available feedback channel number that corresponds respectively to k group retransmission confirmation informationAnd feedback information; Sending module 303 for k is organized feedback information respectively at k feedback channel of a sub-frame of uplink canWith sending to base station 200 in feedback channel numbering.
The flow chart that is illustrated in figure 7 another embodiment 400 of retransmission confirmation information feedback method of the present invention, comprisesFollowing steps:
S401:UE receives M the downlink data packet that base station sends, and produces M the re-transmission corresponding to M downlink data packetConfirmation, wherein M is greater than 4. Wherein, retransmission confirmation information can comprise ACK, NACK, DTX etc. ACK represents correct reception,Represent that base station does not need to retransmit. NACK represents correctly not receive, and DTX represents not receive, and weight need to be carried out in expression base stationPass.
As one embodiment of the present of invention, if a packet comprises multiple code words, to belonging to same dataThe corresponding retransmission confirmation information of multiple code words of bag merges processing, for example, carries out logic add, generates a compound weightPass confirmation.
S402:UE, according to the mapping relations of retransmission confirmation information and feedback channel numbering, feedback information, determines corresponding to instituteState N feedback channel and the N group feedback information of M retransmission confirmation information.
As one embodiment of the present of invention, in described mapping relations, M the described feedback that retransmission confirmation information is correspondingThe number N of channel meets Wherein n=1,2,3......, K is everyThe bit number carrying in individual described feedback channel, Expression meets The n value of conditionMinimum of a value. As one embodiment of the present of invention, the bit number k carrying in each feedback channel can be 1 or 2.
As one embodiment of the present of invention, in each feedback channel, carry 2 bit feedback information, i.e. k=2, eachCorresponding one group of N the channel number of state to be feedback and 2 being formed by M retransmission confirmation informationNBit feedback information. As thisBright embodiment, the number N of feedback channel meets
As one embodiment of the present of invention, if Now not only can distinguish each packetACK, NACK state, can also distinguish DTX state.
For example, in the time of M=5, obtain N=2, all corresponding to each feedback composition of 5 retransmission confirmation information compositions2 different feedback channels and 4 bit feedback information, now UE will use 2 corresponding feedbacks in a sub-frame of uplinkTransmission 4 bit feedback information, carry 2 bit feedback information in each feedback channel.
As embodiments of the invention, the mapping relations between retransmission confirmation information and feedback channel, feedback information canFor the relation of shining upon one by one.
S403:UE organizes feedback information by N and send to base station on N feedback channel of a sub-frame of uplink.
As one embodiment of the present of invention, UE is in advance by the mapping of retransmission confirmation information and feedback channel, feedback informationRelational storage, in memory, obtains this mapping relations by read memory. For example, UE is true according to M the re-transmission meetingRecognize the situation of information, search the mapping table in memory, obtain information to be feedback and corresponding feedback channel. Feedback information is enteredAfter row Base-Band Processing, use respective feedback channel to transmit.
Be illustrated in figure 8 the functional structure chart of an embodiment of system of the present invention. This system comprises base station 500 HesUE600。
Wherein, base station 500 is for sending M downlink data packet to UE600, and receives UE600 at a sub-frame of uplinkThe feedback information sending in feedback channel, it is right to obtain according to the mapping relations of retransmission confirmation information and feedback channel, feedback informationThe retransmission confirmation information of M downlink data packet described in Ying Yu, wherein M is greater than 4. As one embodiment of the present of invention, base station 500Have data by judging on which available feedback channel, and to the feedback information data of carrying on each feedback channel detect,Demodulation obtains concrete feedback information, can know M retransmission confirmation information state by looking into mapping relations form, thus judgementData receiver situation on M descending sub frame.
UE600, for receiving M the downlink data packet that base station 500 sends, produces M corresponding to M downlink data packetRetransmission confirmation information, and according to the mapping relations of retransmission confirmation information and feedback channel, feedback information, determine corresponding to M weightPass N feedback channel and the N group feedback information of confirmation, and it is individual at the above-mentioned N of a sub-frame of uplink that N is organized to feedback informationOn feedback channel, send to base station 500.
As shown in Figure 8, base station 500 comprises sending module 501, receiver module 502 and acquisition module 503. Wherein, send mouldPiece 501 is for sending M downlink data packet to UE600, and wherein M is greater than 4. Receiver module 502 is for receiving UE600 at oneThe feedback information sending in the feedback channel of row subframe. Acquisition module 503 is for according to retransmission confirmation information and feedback channel, anti-The mapping relations of feedforward information are obtained the retransmission confirmation information corresponding to M downlink data packet.
As one embodiment of the present of invention, base station 500 also comprises memory module 504, confirms for storing described re-transmissionThe mapping relations of Information and feedback channel, feedback information. In this embodiment, acquisition module 503 is also for reading described storageModule is to obtain the mapping relations of retransmission confirmation information and feedback channel, feedback information.
As shown in Figure 8, UE600 comprises receiver module 601, determination module 602 and sending module 603. Wherein, receiver module601 M downlink data packet that send for receiving base station 500, and produce M the re-transmission confirmation corresponding to M downlink data packetInformation, wherein M is greater than 4. Determination module 602 is for according to the mapping relations of retransmission confirmation information and feedback channel, feedback information,Determine corresponding to N feedback channel and the N of M retransmission confirmation information and organize feedback information. Sending module 603 is for feeding back N groupInformation sends to base station 500 on N feedback channel of a sub-frame of uplink.
As one embodiment of the present of invention, UE600 also comprises memory module 604, and it is confirmed for storing described re-transmissionThe mapping relations of Information and feedback channel, feedback information. In this embodiment, determination module 602 is also for reading memory moduleTo obtain the mapping relations of retransmission confirmation information and feedback channel, feedback information.
The embodiment of message feedback method, system and equipment proposed by the invention, has proposed using spectrum aggregating skillIn the long evolving system of art, UE uses the method for multi-channel multiplexing transmission, transmits multiple lower line numbers in a sub-frame of uplinkAccording to the scheme of the corresponding ACK/NACK of bag. This scheme is easy to realize, and is applicable to FDD and TDD system simultaneously, and can wellWith LTERelease8 system compatible.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, canUnderstand and can carry out multiple variation, amendment, replacement to these embodiment without departing from the principles and spirit of the present inventionAnd modification, scope of the present invention is by claims and be equal to and limit.
Claims (22)
1. the retransmission confirmation information feedback method in multicarrier system, is characterized in that, comprising:
User equipment (UE) receives multiple downlink data packet that base station sends, and generation corresponds respectively to described multiple downlink data packetM retransmission confirmation information, wherein said M is greater than 4;
Described UE is divided into k group according to rule of classification by a described M retransmission confirmation information, and according to retransmission confirmation information and available anti-The mapping relations of feedback channel number, feedback information, determine the k group available feedback that corresponds respectively to described k group retransmission confirmation informationChannel number and feedback information;
Described UE is the described available feedback channel volume in k feedback channel of a sub-frame of uplink by described k group feedback informationOn number, send to described base station,
If the number of described multiple downlink data packet is less than or equal to the number N of the available uplink feedback channel of 4 times, described heavyPass the number that confirmation number M equals described multiple downlink data packet;
If the number of described downlink data packet is greater than 4N, to described multiple downlink data packet, corresponding multiple re-transmissions are confirmedInformation merges processing, generates a described M retransmission confirmation information, so that M is less than or equal to 4N,
Wherein, described rule of classification comprises according to feedback resources number reserved in each uplink feedback channel and determines described k groupNumber p1, the p2 of each group in retransmission confirmation information ... pk, andItsDescribed in p1, p2 ... pk is less than or equal to 4.
2. retransmission confirmation information feedback method according to claim 1, is characterized in that,
Described rule of classification comprises that by group number k value be the number N that is not more than available uplink feedback channel.
3. retransmission confirmation information feedback method according to claim 1 and 2, is characterized in that,
Described rule of classification comprise by described group of number k value for make described p1, p2 ... pk meets described reserved feedback moneyThe minimum of a value that source number requires.
4. retransmission confirmation information feedback method according to claim 1 and 2, is characterized in that,
Described rule of classification is the number N that equals described available uplink feedback channel by described k value.
5. retransmission confirmation information feedback method according to claim 1 and 2, is characterized in that,
Described rule of classification comprises a described M retransmission confirmation information is divided into average or uneven k group.
6. retransmission confirmation information feedback method according to claim 1, is characterized in that,
Described rule of classification comprises fixing rule of classification,
Described method also comprises:
Described UE receives described rule of classification by signaling, and described signaling comprises broadcast signaling and/or high-level signaling.
7. retransmission confirmation information feedback method according to claim 1, is characterized in that,
Described rule of classification comprises dynamic rule of classification,
Described method also comprises:
Described UE receives described rule of classification by signaling, and described signaling comprises: high-level signaling and/or descending control indication letterOrder.
8. retransmission confirmation information feedback method according to claim 1, is characterized in that,
Described rule of classification comprises that the corresponding retransmission confirmation information of the packet of the multiple descending sub frames to same carrier wave is excellentFirst divide into groups.
9. retransmission confirmation information feedback method according to claim 1, is characterized in that,
Described rule of classification comprises the corresponding retransmission confirmation information of the packet of same descending sub frame in multicarrier preferentialDivide into groups.
10. the retransmission confirmation information reponse system in multicarrier system, is characterized in that, comprises base station and subscriber equipmentUE，
Described base station, for sending multiple downlink data packet to described UE, and sends rule of classification by signaling to described UE,And receive according to described rule of classification the M corresponding to described multiple downlink data packet the weight that described UE sends in a subframePass confirmation, wherein said M is greater than 4;
Described UE, the multiple downlink data packet that send for receiving described base station, produce and correspond respectively to described multiple lower line numberAccording to M retransmission confirmation information of bag, and according to described rule of classification, a described M retransmission confirmation information is divided into k group, and according toThe mapping relations of retransmission confirmation information and available feedback channel number, feedback information, determine that corresponding respectively to described k group retransmits reallyRecognize k group available feedback channel number and the feedback information of information, and described k is organized to feedback information respectively at a sub-frame of uplinkK feedback channel in described available feedback channel number on send to described base station,
If the number of described multiple downlink data packet is less than or equal to the number N of the available uplink feedback channel of 4 times, described heavyPass the number that confirmation number M equals described multiple downlink data packet;
If the number of described downlink data packet is greater than 4N, to described multiple downlink data packet, corresponding multiple re-transmissions are confirmedInformation merges processing, generates a described M retransmission confirmation information, so that M is less than or equal to 4N,
Wherein, described rule of classification comprises according to feedback resources number reserved in each uplink feedback channel and determines described k groupNumber p1, the p2 of each group in retransmission confirmation information ... pk, andItsDescribed in p1, p2 ... pk is less than or equal to 4.
11. 1 kinds of base stations, is characterized in that, comprising:
Determination module, it is for determining rule of classification;
Sending module, it is for send multiple downlink data packet to UE, and sends described grouping rule by signaling to described UE;
Receiver module, its for receive according to described rule of classification that described UE sends a subframe corresponding to described multipleThe M of a downlink data packet retransmission confirmation information, wherein M is greater than 4,
If the number of described multiple downlink data packet is less than or equal to the number N of the available uplink feedback channel of 4 times, described heavyPass the number that confirmation number M equals described multiple downlink data packet;
If the number of described downlink data packet is greater than 4N, to described multiple downlink data packet, corresponding multiple re-transmissions are confirmedInformation merges processing, generates a described M retransmission confirmation information, so that M is less than or equal to 4N,
Wherein, described rule of classification comprises according to feedback resources number reserved in each uplink feedback channel and determines that k group retransmitsNumber p1, the p2 of each group in confirmation ... pk, andWherein instituteState p1, p2 ... pk is less than or equal to 4.
12. 1 kinds of user equipment (UE)s, is characterized in that, comprising:
Receiver module, multiple downlink data packet that it sends for receiving base station, and receive described base station and send by signalingRule of classification, and produce and correspond respectively to M retransmission confirmation information of described multiple downlink data packet, wherein said M is greater than4；
Grouping module, it is for according to described rule of classification, a described M retransmission confirmation information being divided into k group, and according to re-transmissionThe mapping relations of confirmation and available feedback channel number, feedback information, determine and correspond respectively to described k group retransmission confirmationK group available feedback channel number and the feedback information of breath;
Sending module, its for by described k group feedback information respectively described in k feedback channel of a sub-frame of uplinkIn available feedback channel number, send to described base station;
If the number of described multiple downlink data packet is less than or equal to the number N of the available uplink feedback channel of 4 times, described heavyPass the number that confirmation number M equals described multiple downlink data packet;
If the number of described downlink data packet is greater than 4N, to described multiple downlink data packet, corresponding multiple re-transmissions are confirmedInformation merges processing, generates a described M retransmission confirmation information, so that M is less than or equal to 4N,
Wherein, described rule of classification comprises according to feedback resources number reserved in each uplink feedback channel and determines described k groupNumber p1, the p2 of each group in retransmission confirmation information ... pk, andItsDescribed in p1, p2 ... pk is less than or equal to 4.
Retransmission confirmation information feedback method in 13. 1 kinds of multicarrier systems, is characterized in that, comprising:
User equipment (UE) receives M the downlink data packet that base station sends, and produces M corresponding to a described M downlink data packetRetransmission confirmation information, wherein said M is greater than 4;
Described UE, according to the mapping relations of retransmission confirmation information and feedback channel, feedback information, determines corresponding to described M re-transmissionThe N of a confirmation feedback channel and N group feedback information;
Described UE sends to described base station by described N group feedback information on described N feedback channel of a sub-frame of uplink,
Described mapping relations comprise that the number N of the described feedback channel that a described M retransmission confirmation information is corresponding meetsWherein said k is the bit number carrying in each described feedback channel.
14. retransmission confirmation information feedback methods according to claim 13, is characterized in that,
The bit number k carrying in described each feedback channel is 1 or 2.
15. retransmission confirmation information feedback methods according to claim 13, is characterized in that,
Mapping relations between described retransmission confirmation information and feedback channel, feedback information are the relation of shining upon one by one.
16. retransmission confirmation information feedback methods according to claim 13, is characterized in that, also comprise:
If a packet comprises multiple code words, to belonging to the corresponding re-transmission of described multiple code words of same packetConfirmation merges processing, generates a retransmission confirmation information.
17. according to the retransmission confirmation information feedback method described in claim 13 or 14, it is characterized in that,
Described UE obtains described retransmission confirmation information by read memory and feedback channel is numbered, the mapping of feedback information is closedSystem.
Retransmission confirmation information reponse system in 18. 1 kinds of multicarrier systems, is characterized in that, comprises base station and subscriber equipmentUE，
Described base station, for sending M downlink data packet to described UE, and receives the feedback of described UE in a sub-frame of uplinkThe feedback information sending on channel, according to the mapping relations of retransmission confirmation information and feedback channel, feedback information obtain corresponding toThe retransmission confirmation information of a described M downlink data packet, wherein said M is greater than 4;
Described UE, M the downlink data packet sending for receiving described base station, produces the M corresponding to a described M downlink data packetIndividual retransmission confirmation information, and according to the mapping relations of described retransmission confirmation information and feedback channel, feedback information, determine corresponding toN feedback channel of a described M retransmission confirmation information and N group feedback information, and by up at one described N group feedback informationOn described N feedback channel of subframe, send to described base station,
Described mapping relations comprise that the number N of the described feedback channel that a described M retransmission confirmation information is corresponding meetsWherein said k is the bit number carrying in each described feedback channel.
19. 1 kinds of base stations, is characterized in that, comprising:
Sending module, it is for sending M downlink data packet to UE, and wherein said M is greater than 4;
Receiver module, the feedback information that it sends on the feedback channel of a sub-frame of uplink for receiving described UE;
Acquisition module, it is for obtaining corresponding to institute according to the mapping relations of retransmission confirmation information and feedback channel, feedback informationState the retransmission confirmation information of M downlink data packet,
Described mapping relations comprise that the number N of the described feedback channel that a described M retransmission confirmation information is corresponding meetsWherein said k is the bit number carrying in each described feedback channel.
20. base stations according to claim 19, is characterized in that, also comprise memory module,
Described memory module is for storing the mapping relations of described retransmission confirmation information and feedback channel, feedback information,
Described acquisition module is also for reading described memory module to obtain described retransmission confirmation information and feedback channel, feedback letterThe mapping relations of breath.
21. 1 kinds of user equipment (UE)s, is characterized in that, comprising:
Receiver module, M the downlink data packet that it sends for receiving base station, and produce corresponding to a described M downlink data packetM retransmission confirmation information, wherein said M is greater than 4;
Determination module, it,, for according to the mapping relations of described retransmission confirmation information and feedback channel, feedback information, determines correspondingIn N feedback channel and the N group feedback information of a described M retransmission confirmation information;
Sending module, it for sending to base by described N group feedback information on described N feedback channel of a sub-frame of uplinkStand,
Described mapping relations comprise that the number N of the described feedback channel that a described M retransmission confirmation information is corresponding meetsWherein said k is the bit number carrying in each described feedback channel.
22. UE according to claim 21, is characterized in that, also comprise memory module,
Described memory module is for storing the mapping relations of described retransmission confirmation information and feedback channel, feedback information,
Described determination module is also for reading described memory module to obtain described retransmission confirmation information and feedback channel, feedback letterThe mapping relations of breath.
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| CN101989897B (en) * | 2010-11-15 | 2015-10-21 | 中兴通讯股份有限公司 | Confirmation feedback method and terminal |
| CN102098151B (en) * | 2010-12-28 | 2015-08-12 | 中兴通讯股份有限公司 | A kind of sending method of correct/error response message and user terminal |
| CN103384188B (en) | 2012-05-04 | 2017-03-01 | 电信科学技术研究院 | Carrier aggregation feedback method, apparatus and system |
| CN103780361B (en) * | 2012-10-17 | 2018-08-17 | 中兴通讯股份有限公司 | A kind of sending method and device of response message |
| CN108111262B (en) * | 2016-11-25 | 2022-04-15 | 北京三星通信技术研究有限公司 | Method for hybrid automatic repeat request feedback and retransmission, receiver and transmitter |
| CN108270522B (en) * | 2016-12-30 | 2022-04-29 | 中兴通讯股份有限公司 | Method and device for processing confirmation information |
| BR112019023070A2 (en) * | 2017-05-03 | 2020-06-09 | Guangdong Oppo Mobile Telecommunications Corp Ltd | data retransmission control method, terminal, and network side device |
| CN112311506B (en) * | 2019-08-02 | 2023-05-02 | 中国信息通信研究院 | Multicast communication feedback method, terminal equipment and system |
| CN112583554B (en) * | 2019-09-29 | 2022-04-22 | 华为技术有限公司 | Communication method, device and system |
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