CN102315916A

CN102315916A - Method and device for sending downlink distribution indication, method and device for feeding back responder channel

Info

Publication number: CN102315916A
Application number: CN2010102226362A
Authority: CN
Inventors: 陈小波; 吕永霞; 张伟
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2010-07-06
Filing date: 2010-07-06
Publication date: 2012-01-11
Anticipated expiration: 2030-07-06
Also published as: CN102315916B; WO2011137822A1

Abstract

The invention discloses a method and device for sending a downlink distribution indication. The method comprises the steps of: in a downlink subframe, generating a downlink distribution indication according to the sequence of an auxiliary carrier downlink relevance subframe and then a main carrier downlink relevance subframe, among different downlink subframes, generating a downlink distribution indication according to the time sequence of the downlink subframes; and sending the generated downlink distribution indications on a physical downlink control channel (PDCCH). According to the method and the device for sending the distribution indication, provided by the embodiment of the invention, user equipment can be facilitated to detect whether PDCCH loss exists on auxiliary member carriers in the subframe through DAI (Downlink Assignment Indication) fields included in the PDCCH of the main member carrier. Meanwhile, the embodiment of the invention also provides a method and device for feeding back response information.

Description

The feedback method and the device of the sending method of descending distribution indication and device, responder link

Technical field

The present invention relates to communication technical field, relate in particular in the communication technology, descending distribution indication (Downlink Assignment Index, the feedback method of sending method DAI) and device and responder link and device.

Background technology

3GPP E-UTRA (Evolved Universal Terrestrial Radio Access, evolution whole world terrestrial wireless inserts) system also claims LTE (Long Term Evolution, Long Term Evolution) system.In the LTE system, the HARQ technology is supported in the transmission of data/reception, to reduce data transmission delay and to obtain higher message transmission rate.In the HARQ technology, after the data that receive the data receiver transmission, the data receiver need feed back response message to data receiver, to help to confirm whether correctly to receive data.Particularly, if received data and Data Receiving is correct, the response message value that generates so is ACK (Acknowledgement confirms response message), to the data receiver feeding back ACK; But if received data Data Receiving mistake, the response message value that generates so is NACK (Negative-Acknowledgement denies response message), to data receiver feedback NACK; If do not receive data, the response message value that generates so is DTX (Discontinuous Transmission, discontinuous transmission), not to clear and definite ACK information or the nack message of data receiver feedback.

In the LTE system; Network side is through PDSCH (Physical Downlink Shared Channel; Physical Downlink Shared Channel) sends data message to the user, send control information to the user through PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel).For the PDSCH of dynamic dispatching, its configuration information need be indicated through the control information of carrying among the PDCCH; For SPS-PDSCH (Semi-Persistent Scheduling PDSCH; The semi-continuous scheduling Physical Downlink Shared Channel); Its initial configuration information is indicated through PDCCH; It retransmits configuration information and both can use the PDCCH that receives before to indicate also and can indicate through the PDCCH that receives in the current subframe, and its release information is indicated through PDCCH.After the user receives the PDCCH that discharges through the PDSCH of the dynamic indication of PDCCH and/or indication SPS-PDSCH and/or does not have the dynamic SPS-PDSCH that indicates of PDCCH, all need be to network side feeding back ACK/nack message.Subscriber equipment can pass through PUCCH (Physical uplink control channel, Physical Uplink Control Channel) at the response message of sub-frame of uplink to network side feeding back downlink Data Receiving.In describing hereinafter, will be used for subscriber equipment and be called up responder link to the PUCCH channel of the ACK/NACK information of network side feeding back downlink Data Receiving.

Further evolution and enhancing LTE-A (Long Term Evolution-Advanced in the LTE system; Senior Long Term Evolution) in the system; Carrier aggregation (Carrier Aggregation) technology is selected and is used for supporting wideer bandwidth, with satisfy International Telecommunications Union for the 4th generation the communication technology the peak data rate requirement.In the carrier aggregation technology; The frequency spectrum of a plurality of member carriers (Component Carrier) is grouped together in together to obtain wideer transmission bandwidth; It is compatible that wherein each member carrier all possibly be configured to the LTE system, and the frequency spectrum of each member carrier can be adjacent continuous frequency spectrum, also can be non-conterminous frequency spectrum or even the discontinuous spectrum in the different frequency bands in the identical frequency band.The LTE subscriber equipment can only insert one of them member carrier and carry out data transmit-receive, carries out data transmit-receive and the LTE-A subscriber equipment can insert a plurality of member carriers simultaneously according to its ability and business demand.Carrier aggregation technology also is spectrum aggregating (Spectrum Aggregation) technology sometimes, perhaps bandwidth expansion (Bandwidth Extension) technology.In the carrier aggregation technology, each member carrier has independently HARQ process, and can dispose different uplink member carrier numbers and downlink member carrier number for the LTE-A subscriber equipment.In addition, in carrier aggregation counting, network side has disposed a main downlink member carrier for each user, and the user can receiving system information etc. on main carrier; Other one or more downlink member carriers for configuration are commonly referred to as auxilliary downlink member carrier.

In the carrier aggregation technology that the LTE-A system adopts; Subscriber equipment can insert a plurality of downlink member carriers simultaneously; To (the Physical Downlink Shared Channel of the PDSCH on each downlink member carrier; Physical Downlink Shared Channel), all on up responder link, feed back corresponding response message.No matter subscriber equipment inserts one or more uplink member carrier simultaneously, always ACK/NACK information is configured in a uplink member carrier feedback.In the TDD system, according to its ratio of uplink subframe to downlink subframe, M descending sub frame can be associated with some identical sub-frame of uplink feedback response messages.The value of M can be 1,2,3,4 or 9.Therefore, for the TDD system of carrier aggregation, a sub-frame of uplink need feed back the corresponding ACK/NACK information of a plurality of downlink member carriers of one or more descending sub frame.

Do not have the response message feedback model of standard at present in the LTE-A communication system, mainly contain two kinds of schemes: one, in a sub-frame, be merely main member carrier and distribute up responder link, to reduce the expense of up responder link; Two, in a sub-frame, distribute a up responder link respectively for all member carriers.

In the process of analyzing above-mentioned response message feedback, find to exist at least in the prior art following problem:

The first, for the LTE-A communication system; Owing in a descending sub frame, be merely the up responder link of the descending related sub-frame allocation of main carrier; Cause the response message of feedback to be difficult to PDCCH (Physical downlink control channel, the Physical Downlink Control Channel) loss situation on the auxilliary descending related subframe of carrier wave of accurately expression.

The second, for the LTE-A communication system; If in a descending sub frame, distribute different up responder links respectively for the descending related subframe of all member carriers; Need be more for the up responder link number of user equipment allocation, make that up responder link expense is bigger.

No matter the 3rd is LTE communication system or LTE-A communication system, owing to adopt ACK/NACK binding feedback model,, need to retransmit all PDSCH in case have PDCCH to lose or have PDSCH to receive mistake, cause the decline of downlink throughput capacity.And; Receiving PDCCH when losing; Feeding back ACK/NACK not on the PUCCH (Physical uplink control channel, Physical Uplink Control Channel) is when network side has issued a plurality of PDCCH in descending related subframe collection; Can't know that which PDCCH has lost, which PDCCH is successfully received by UE institute, cause network side to select appropriate H ARQ retransmission scheme to both of these case respectively.

Summary of the invention

Embodiments of the invention provide a kind of sending method and device thereof of descending distribution indication, so that draw the PDCCH loss situation on the auxilliary member carrier more exactly.

For achieving the above object, embodiments of the invention adopt following technical scheme:

A kind of sending method of descending distribution indication; Comprise: the order according to the descending related subframe of main carrier after the earlier auxilliary descending related subframe of carrier wave in a descending sub frame generates descending distribution indication, and the time order and function according to descending sub frame between different descending sub frames generates descending distribution indication in proper order; On physical downlink control channel PDCCH, send the descending distribution indication of said generation.

A kind of dispensing device of descending distribution indication; Comprise: generation unit; Be used in a descending sub frame, generating descending distribution according to the order of the descending related subframe of main carrier after the auxilliary descending related subframe of carrier wave of elder generation and indicate, the time order and function according to descending sub frame between different descending sub frames generates descending distribution indication in proper order; Transmitting element is used for the descending distribution indication of the said generation of transmission on physical downlink control channel PDCCH.

The sending method and the device of the descending distribution indication that the embodiment of the invention provides; Order according to main member carrier behind the earlier auxilliary member carrier in a sub-frame generates said descending distribution indication field; Time order and function according to subframe between different subframes generates said descending distribution indication field in proper order; Whether because the DAI of embodiment of the invention master member carrier PDCCH generates in this subframe at last, can make things convenient for subscriber equipment to detect in this subframe through the DAI field that comprises among this PDCCH of main member carrier has PDCCH to lose on the auxilliary member carrier.

Embodiments of the invention also provide a kind of feedback method and device of response message, not only can reduce to be the uplink ACK channel resource of user equipment allocation, reduce the control channel expense.

A kind of feedback method of response message comprises: the descending related subframe of last main carrier that detects physical downlink control channel PDCCH; Be retrieved as the up responder link of the descending related sub-frame allocation of detected last main carrier; On described up responder link, feed back response message.

A kind of feedback device of response message comprises: detecting unit is used to detect the descending related subframe of last main carrier of physical downlink control channel PDCCH; Acquiring unit is used to be retrieved as the up responder link of the descending related sub-frame allocation of detected last main carrier; Feedback unit is used on described up responder link, feeding back response message.

The feedback method of the response message that the embodiment of the invention provides and device; Because the up responder link that subscriber equipment is only selected to be used for the descending related sub-frame allocation on last main member carrier feeds back response message; So adopting only is the up responder link of descending related sub-frame allocation on the main member carrier; It is not the up responder link of descending related sub-frame allocation on the auxilliary member carrier; Therefore significantly minimizing need be the up responder link resource of user equipment allocation, reduces the control channel expense.

Embodiments of the invention provide a kind of feedback method and device of response message again, improve downlink throughput capacity.

A kind of feedback method of response message comprises: last descending sub frame that detects physical downlink control channel PDCCH; Obtain the up responder link that detected last descending sub frame distributes; On described up responder link, feed back response message.

A kind of feedback device of response message comprises: detecting unit is used to detect last descending sub frame of physical downlink control channel PDCCH; Acquiring unit is used to obtain the up responder link that detected last descending sub frame distributes; Feedback unit is used on described up responder link, feeding back response message.

The feedback method of the response message that the embodiment of the invention provides and device; Owing to be the up responder link that detects last descending sub frame distribution of physical downlink control channel PDCCH; The base station can be known by the correct PDSCH position, front that receives of subscriber equipment; And the subframe position that can know user's omission PDCCH, so, the re-transmitted of several PDSCH of front that the base station can be avoided subscriber equipment has correctly been received; Thereby improve the retransmission efficiency of system, improve the downlink throughput capacity of system.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the subframe sketch map of carrier aggregation in the embodiment of the invention;

Fig. 2 is the generation method flow diagram of DAI in the embodiment of the invention;

Fig. 3 is the generating apparatus block diagram of DAI in the embodiment of the invention;

Fig. 4 is the system of selection flow chart of a kind of responder link in the embodiment of the invention;

Fig. 5 is the choice device block diagram of a kind of responder link in the embodiment of the invention;

Fig. 6 is the system of selection flow chart of another kind of responder link in the embodiment of the invention;

Fig. 7 is the choice device block diagram of another kind of responder link in the embodiment of the invention;

Fig. 8 is the system of selection flow chart of responder link in the embodiment of the invention 1;

Fig. 9 is the system of selection flow chart of responder link in the embodiment of the invention 2;

Figure 10 is the system of selection flow chart of responder link in the embodiment of the invention 3;

Figure 11 is the system of selection flow chart of responder link in the embodiment of the invention 4;

Figure 12 is the system of selection flow chart of responder link in the embodiment of the invention 5;

Figure 13 is the choice device block diagram of responder link in the embodiment of the invention 6;

Figure 14 is the choice device block diagram of another kind of responder link in the embodiment of the invention 6.

Embodiment

In embodiments of the present invention; In order to narrate conveniently; Each descending sub frame that the identical up responder link that is associated with identical sub-frame of uplink is fed back each downlink member carrier of response message is defined as a descending related subframe, and the sets definition that they constitute is a descending related subframe set; Comprise one or more the descending related subframe that works on a plurality of downlink member carriers in the same descending sub frame; For the descending related subframe that works in main downlink member carrier, be called the descending related subframe of main carrier; For the descending related subframe that works in auxilliary downlink member carrier, be called the auxilliary descending related subframe of carrier wave.

More than definition is applicable to single carrier TDD system, single carrier FDD system, multi-carrier-wave TDD system and multicarrier FDD system.For single-carrier system, all descending related subframes are all from identical downlink member carrier; For multicarrier FDD system, all descending related subframes all come from a plurality of downlink member carriers of same descending sub frame; For multi-carrier-wave TDD system, all descending related subframes can come from the different downlink member carriers of different descending sub frames respectively.Fig. 1 has provided a kind of example of carrier aggregation TDD system; 1,2,3,4 and 2 uplink member carrier 2,3 of four downlink member carriers that wherein have been user device configuration; And each downlink member carrier all has four related descending sub frame n-k1, n-k2, n-k3; N-k4, the ACK/NACK information that these related descending sub frames are corresponding all will be fed back on the sub-frame of uplink n of uplink member carrier 2.Therefore, all these need the descending related subframe of feeding back ACK/nack message constitute a descending related subframe set on same sub-frame of uplink n.

First embodiment of the invention provides a kind of DAI (Downlink Assignment Indication; Descending distribution indication) sending method; This method is mainly used in the carrier aggregation technology; In descending related subframe set, be included as the main member carrier and the auxilliary member carrier of user device configuration, as shown in Figure 2, the described sending method of the embodiment of the invention comprises:

201, the order according to the descending related subframe of main carrier after the earlier auxilliary descending related subframe of carrier wave generates descending distribution indication in a descending sub frame, and the time order and function according to descending sub frame between different descending sub frames generates descending distribution indication in proper order.

Further, for the descending related subframe of all auxilliary carrier waves in a descending sub frame, can according to from small to large order of the numbering of auxilliary member carrier, or from big to small order generate said descending distribution indication; The perhaps descending related subframe of all auxilliary carrier waves in a descending sub frame, according to from low to high order of the centre frequency of auxilliary member carrier, or from high to low order generate said descending distribution indication.

Particularly, send to comprise among certain given user's the PDCCH DAI can only form by a part, obtain through the PDCCH that will send to said user in the descending related subframe set is counted.Concrete counting mode includes but not limited to: the number of adding up all PDCCH that till current descending related subframe, send in the same descending sub frame; Perhaps add up the sum of the PDCCH that sends on inherent all the descending related subframes of same descending sub frame; Perhaps add up the number of all PDCCH that till current descending related subframe, send in the descending related subframe set, perhaps add up in the descending related subframe set sum up to the PDCCH that on all descending related subframes, sends till the current descending sub frame.

Particularly, send to comprise among certain given user's the PDCCH DAI also can form by two parts, the DAI of generation also can be made up of two parts, is designated as DAI_T and DAI_F respectively; Through the PDCCH counting that will send to said user in the descending related subframe set is obtained.Wherein DAI_F is through obtaining the PDCCH counting that will send in the descending related subframe in the identical descending sub frame, from different downlink member carriers, and DAI_T is through obtaining the PDCCH counting that will send in the descending related subframe in the identical downlink member carrier, from different descending sub frames.In the acquisition process of DAI_F; The mode of counting the PDCCH of the descending related subframe of main carrier according to the PDCCH of the first auxilliary descending related subframe of carrier wave of counting, is at last obtained; Wherein, Counting mode includes but not limited to: add up in the current descending sub frame number of all PDCCH that send till the descending related subframe of current downlink member carrier, add up when perhaps the descending related subframe of auxilliary carrier wave being generated DAI the PDCCH that sends on the auxilliary descending related subframe of carrier wave in the current descending sub frame sum, the descending related subframe of main carrier is generated DAI is the sum of adding up the PDCCH that sends on the descending related subframe of all downlink member carriers in the current descending sub frame.For the FDD system of carrier aggregation, can only comprise DAI_F.

After PDCCH was counted, the value of DAI was obtained according to the number to the PDCCH counting.For example, when certain part DAI by n bit form, when the number of corresponding PDCCH counting is M, a kind of DAI value V that obtains _DAIMethod be V _DAI=(M-1) mod2 ⁿ+ 1.

202, on physical downlink control channel PDCCH, send the descending distribution indication of said generation.

Wherein comprise descending distribution indication field in this Physical Downlink Control Channel.

The embodiment of the invention also provides the dispensing device of a kind of DAI; Mainly be used in the carrier aggregation technology; In descending related subframe set, be included as the main member carrier and the auxilliary member carrier of user device configuration, as shown in Figure 3, said dispensing device comprises: generation unit 31, transmitting element 32.

Wherein, Generation unit 31 is used in a descending sub frame, generating descending distribution according to the order of the descending related subframe of main carrier after the auxilliary descending related subframe of carrier wave of elder generation indicates, and the time order and function according to descending sub frame between different descending sub frames generates descending distribution indication in proper order; Transmitting element 32 is used on physical downlink control channel PDCCH, sending the descending distribution indication of said generation.

For all the auxilliary member carrier DAI in a sub-frame; Generation unit 21 in the embodiment of the invention also comprises first generation unit and second generation unit; First generation unit wherein; Be used for the descending related subframe of all auxilliary carrier waves in a descending sub frame, according to from small to large order of the numbering of auxilliary member carrier, or from big to small order generate said descending distribution indication; Second generation unit is used for the descending related subframe of all auxilliary carrier waves in a descending sub frame, according to from low to high order of the centre frequency of auxilliary member carrier, or from high to low order generate said descending distribution indication.。

In order to generate DAI smoothly, the embodiment of the invention can be added up PDCCH, and concrete statistical can adopt the described method of 201 processes among Fig. 2.

The sending method of the DAI that the embodiment of the invention provides and device; Order according to main member carrier behind the earlier auxilliary member carrier in a sub-frame generates said descending distribution indication field; Time order and function according to subframe between different subframes generates said descending distribution indication field in proper order; Whether because the DAI of embodiment of the invention master member carrier PDCCH generates in this subframe at last, can make things convenient for subscriber equipment to detect in this subframe through the DAI field that comprises among this PDCCH of main member carrier has PDCCH to lose on the auxilliary member carrier.

Second embodiment of the invention also provides a kind of feedback method of responder link; This method mainly is used in the carrier aggregation technology; In descending related subframe set, be included as the main member carrier and the auxilliary member carrier of user device configuration, as shown in Figure 4, the said method of the embodiment of the invention comprises:

401, detect the descending related subframe of last main carrier of physical downlink control channel PDCCH.

402, be retrieved as the up responder link of the descending related sub-frame allocation of detected last main carrier.

Step 401,402 wherein; Particularly, particularly, obtain up responder link and can comprise following situation:

The first, in last descending sub frame that receives Physical Downlink Control Channel or semi-continuous scheduling Physical Downlink Shared Channel; Lose if subscriber equipment has received PDCCH and in this last descending sub frame, do not detected PDCCH in the descending related subframe of auxilliary carrier wave, the up responder link that then will distribute for the transmission of the Physical Downlink Control Channel on the auxilliary descending related subframe of carrier wave in this descending sub frame or the transmission of semi-continuous scheduling Physical Downlink Shared Channel is as the up responder link of feedback response message;

The second, in last subframe that receives Physical Downlink Control Channel or semi-continuous scheduling Physical Downlink Shared Channel; If subscriber equipment is only receiving PDCCH or SPS-PDSCH transmission and detecting that PDCCH loses on the auxilliary descending related subframe of carrier wave having received PDCCH or SPS-PDSCH transmission or subscriber equipment on the descending related subframe of main carrier on the descending related subframe of main carrier, the up responder link that then will distribute for the transmission of the Physical Downlink Control Channel on the descending related subframe of main carrier in this descending sub frame or the transmission of semi-continuous scheduling Physical Downlink Shared Channel is as the up responder link of feedback response message.

The 3rd, for other situation, be regardless of and mix capable responder link except first kind of situation and second kind of situation, promptly DTX does not feed back explicit ACK or nack message to network side.

Further; Said up responder link; If PDCCH corresponding to PDSCH that indicates through PDCCH on the descending related subframe of main carrier or the termination of indicating downlink semi-continuous scheduling; CCE resource by PDCCH takies is shone upon acquisition in a certain way, and mapping mode can be that the resource that the PDCCH of LTE R8/R9 definition takies arrives up responder link resource mapping mode, specifically can be with reference to TS 36.213 agreements.If said up responder link corresponding to the SPS-PDSCH on the descending related subframe of main carrier, is distributed through the explicit signaling mode by the base station.Said up responder link, if corresponding to the PDCCH on the auxilliary descending related subframe of carrier wave, corresponding up responder link can be distributed through showing signaling method by the base station; TPC (the Transmission Power Command that PDCCH on the wherein auxilliary descending related subframe of carrier wave comprises; Transmit power command) can be used as up responder link resource directive command word, come further indication to distribute to the up responder link resource of subscriber equipment as a kind of explicit signaling by the base station.In order to reduce the expense of distributing different up responder links to cause respectively to the descending related subframe of a plurality of auxilliary carrier wave of a descending sub frame; To a subscriber equipment, in a descending sub frame the identical up responder link of the descending related sub-frame allocation of all auxilliary carrier waves preferably in the embodiment of the invention.

In embodiments of the present invention, the loss situation of PDCCH is judged through the DAI that carries among the PDCCH that sends in each descending related subframe in each descending sub frame.Be indicated to the sum in all descending related subframes of network side till the current descending sub frame in the preferred descending related subframe set of the DAI of the embodiment of the invention for the PDCCH of subscriber equipment transmission.Like this, the difference of the DAI value of the DAI value descending sub frame previous with it of a descending sub frame has represented to issue in the descending sub frame sum of certain given user's PDCCH.

403, on described up responder link, feed back response message.

Wherein, subscriber equipment is used for the ACK/NACK information bit of bind calculation.Can adopt in the practical implementation but be not limited to the method for following calculating ACK/NACK information bit:

Method one, for the corresponding descending related subframe of the said up responder link that obtains, and said descending related subframe before all descending related subframes; Perhaps for all the descending related subframes in the descending related subframe set; Take following method to produce the ACK/NACK information of feedback; Particularly: (1) to network side feedback DTX, does not promptly have explicit ACK or nack message feedback when finding to have one or more Physical Downlink Control Channel to lose; (2) Physical Downlink Control Channel of ending for the Physical Downlink Shared Channel and/or the indication semi-continuous scheduling Physical Downlink Shared Channel of reception; If when having any one to be NACK in the ACK/NACK information of the Physical Downlink Control Channel correspondence that m code word (the m value is 1 or 2) that receives and/or indication semi-continuous scheduling Physical Downlink Shared Channel are ended, m bit value NACK; If the Physical Downlink Control Channel that m code word (the m value is 1 or 2) that receives and/or indication semi-continuous scheduling Physical Downlink Shared Channel are ended all is ACK, m bit value ACK.

Method two, for the corresponding descending related subframe of the said up responder link that obtains and all the descending related subframes before the said descending related subframe; Perhaps for all the descending related subframes in the descending related subframe set; Produce the ACK/NACK information of feedback according to following method; Particularly: (1) produces certain specific 2 bit information that characterizes DTX when finding to have one or more Physical Downlink Control Channel to lose; (2) when not finding to have one or more Physical Downlink Control Channel to lose; If in the Physical Downlink Shared Channel a plurality of codeword transmission are arranged, at first the corresponding ACK/NACK information of a plurality of code words is carried out binding between code word ACK/NACK information bit of acquisition according to the rule of logical AND.If the individual ACK/NACK information bit of front r (r is a positive integer) all is ACK in the ACK/NACK information bit after binding; Produce 2 bit informations that characterize this r ACK information so; If first ACK/NACK information bit value after binding is NACK, produce 2 bit informations that characterize NACK so; If the ACK/NACK information bit after perhaps binding all is ACK and the always total individual ACK of R (R is a positive integer), produces 2 bit informations that characterize this R ACK information so, otherwise produce 2 bit informations that characterize NACK.Wherein, 2 bit informations of sign NACK can be identical with 2 bit informations that characterize DTX.

The embodiment of the invention also provides a kind of feedback device of responder link, and is as shown in Figure 5, and this feedback device 50 comprises: detecting unit 51, acquiring unit 52 and feedback unit 53.

Wherein, detecting unit 51 is used to detect the descending related subframe of last main carrier of physical downlink control channel PDCCH;

Acquiring unit 52 is used to be retrieved as the up responder link of the descending related sub-frame allocation of detected last main carrier;

Wherein the concrete acquisition process of detecting unit 51 concrete testing processes and acquiring unit 52 such as step 401,402 detail, and repeat no more here.

Feedback unit 53 is used on described up responder link, feeding back response message.Wherein the concrete computational methods of response message such as step 403 detail in the feedback unit 53, repeat no more here.

In addition; This feedback device 50 also comprises a receiving element (figure does not show); Be used for receiving the descending distribution indication of PDCCH; Wherein said descending distribution indication is to generate in such a way: the order according to the descending related subframe of main carrier after the earlier auxilliary descending related subframe of carrier wave in a descending sub frame generates descending distribution indication, and the time order and function according to descending sub frame between different descending sub frames generates descending distribution indication in proper order.

Because the up responder link that subscriber equipment is only selected to be used for the descending related sub-frame allocation on last main member carrier feeds back response message; So adopting only is the up responder link of descending related sub-frame allocation on the main member carrier; It is not the up responder link of descending related sub-frame allocation on the auxilliary member carrier; Therefore significantly minimizing need be the up responder link resource of user equipment allocation, reduces the control channel expense.

Third embodiment of the invention also provides the feedback method of another kind of responder link, and this method can be used in the single-carrier technology, also can be used in the carrier aggregation technology, and as shown in Figure 6, said method comprises:

601, detect last descending sub frame of physical downlink control channel PDCCH.Wherein this last descending sub frame that detects physical downlink control channel PDCCH specifically comprises;

In descending related subframe set, detect last descending sub frame of physical downlink control channel PDCCH; Describe face embodiment as follows in detail.

After perhaps detecting PDCCH and losing, and detect PDCCH last descending related subframe before losing, that detect PDCCH.Describe face embodiment as follows in detail.

602, obtain the up responder link that detected last descending sub frame distributes.

603, on described up responder link, feed back response message.

The embodiment of the invention also provides a kind of feedback device of response message; This device can be used in the single-carrier technology; Also can be used in the carrier aggregation technology, as shown in Figure 7, said feedback device 70 comprises: detecting unit 71, acquiring unit 72 and feedback unit 73.

Wherein detecting unit 71, are used to detect last descending sub frame of physical downlink control channel PDCCH;

Acquiring unit 72 is used to obtain the up responder link that detected last descending sub frame distributes;

Feedback unit 73 is used on described up responder link, feeding back response message.

In addition, this detecting unit 71 comprises first detecting unit 74, is used for detecting in descending related subframe set last descending sub frame of physical downlink control channel PDCCH; Second detecting unit 75 after being used to detect PDCCH and losing, and detects PDCCH last descending related subframe before losing, that detect PDCCH.

In addition, any module below this second detecting unit 75 also comprises also:

Detection module one is used in single carrier TDD system or multicarrier FDD system, after detecting PDCCH and losing, and detects PDCCH last descending related subframe before losing, that detect PDCCH;

Detection module two is used for the system at carrier aggregation TDD, after detecting PDCCH and losing, detect PDCCH lose before, on said main member carrier, detect last descending related subframe of PDCCH;

Detection module three is used for the system at carrier aggregation TDD, after detecting PDCCH and losing, and detect PDCCH before losing, detect last descending related subframe of PDCCH.

To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.

Embodiment 1:

The application scenarios of the embodiment of the invention is: use the communication system of carrier aggregation technology, for example: TDD or FDD system; The scheme that the embodiment of the invention adopts under this scene is: be used for subscriber equipment receives last descending related sub-frame allocation of PDCCH at main member carrier up responder link and feed back response message.Of Fig. 8, the feedback method of the response message that the embodiment of the invention provides comprises:

801, network side order according to the descending related subframe of main carrier after the earlier auxilliary descending related subframe of carrier wave in a descending sub frame generates this descending distribution indication, and the time order and function according to descending sub frame between different descending sub frames generates this descending distribution indication in proper order.

802, network side sends Physical Downlink Control Channel in descending related subframe set, comprises said descending distribution indication in this Physical Downlink Control Channel.

In embodiments of the present invention; The DAI that comprises among each PDCCH (Downlink Assignment Index; Descending distribution indication); Order according to the descending related subframe of main carrier after the earlier auxilliary descending related subframe of carrier wave in a descending sub frame generates said descending distribution indication, and the time order and function according to descending sub frame between different descending sub frames generates said descending distribution indication in proper order.Has following beneficial effect after adopting the sequencing of generation provided by the invention DAI: if the PDCCH transmission is arranged on the descending related subframe of the main carrier in a descending sub frame; Because the DAI of the descending related subframe PDCCH of main carrier is last the generation in this descending sub frame; Through DAI genesis sequence provided by the invention; Make subscriber equipment obtain the PDCCH loss situation in the auxilliary descending related subframe of carrier wave in the descending related subframe set, help be the correct response message that feeds back on the responder link of the descending related sub-frame allocation of main carrier through the DAI that comprises at the descending related subframe PDCCH of main carrier.

For the descending related subframe of a plurality of auxilliary carrier wave in the same descending sub frame; The DAI that its PDCCH comprises can generate according to any predefined procedure; As from small to large or order from big to small, perhaps from low to high or order from high to low according to the center carrier frequence of member carrier according to member carrier numbering.

Descending related subframe set with shown in Fig. 1 is that example describes, and downlink member carrier 1 is main member carrier, and downlink member carrier 2,3,4 is auxilliary member carrier.Suppose DAI by a part form, length is 2 bits, the concrete counting mode of supposing PDCCH again is the number (the auxilliary descending related subframe of carrier wave is according to the carrier wave label from small to large in proper order same sub in) of all PDCCH of till current descending related subframe, sending in the descending related subframe set of statistics.Descending sub frame n-k1, n-k3 and n-k4 at following office staff's carrier wave 1,2,3 dispatched subscriber equipment and sent PDCCH when network side; Number to the PDCCH counting when generating DAI is respectively 3,1,2,6,4,5,9,7,8, so corresponding DAI value is respectively 3,1,2,2,4,1,1,3,4.

803, network side is that Physical Downlink Control Channel and/or the semi-continuous scheduling Physical Downlink Shared Channel that sends on the descending related subframe of main carrier in the descending related subframe set distributes corresponding up responder link.

Particularly; CCE (the Control Channel Elements that the said up responder link that distributes for the PDCCH that sends on the main carrier in the descending related subframe set can take through PDCCH; The control channel element) resource is shone upon acquisition in a certain way; Mapping mode can be that the CCE resource that the PDCCH of LTE R8/R9 definition takies arrives up responder link resource mapping mode, specifically can be with reference to TS 36.213 agreements.Said for SPS-PDSCH distribute up responder link notify to subscriber equipment through explicit signaling by network side.Said for the PDCCH and/or the semi-continuous scheduling Physical Downlink Shared Channel that send on the auxilliary carrier wave in the descending related subframe set, be regardless of the up responder link that pairing is answered.

804, subscriber equipment receives Physical Downlink Control Channel and/or semi-continuous scheduling Physical Downlink Shared Channel in descending related subframe set.

805, subscriber equipment obtains the up responder link of feeding back ACK/nack message; Particularly, in the embodiment of the invention with the up responder link of the up responder link that distributes in last descending sub frame that receives Physical Downlink Control Channel on the main member carrier as the feedback response message.

When judging the PDCCH loss situation, use the counting sequence of above-mentioned DAI.

Adopt the scheme of obtaining up responder link in the embodiment of the invention, following situation possibly occur:

The first, in descending related subframe set; If received PDCCH at main member carrier; No matter whether also received SPS-PDSCH, will be the up responder link of last descending related sub-frame allocation of having received PDCCH up responder link as the feedback response message; If receive only SPS-PDSCH, with the up responder link of last the descending related sub-frame allocation that has received SPS-PDSCH up responder link as the feedback response message at main member carrier.That is, this up responder link possibly be that network side is PDCCH or the corresponding up responder link that distributes of SPS-PDSCH that receives.In addition, except main member carrier, on auxilliary member carrier, subscriber equipment can receive PDCCH transmission and/or SPS-PDSCH transmission equally.PDCCH or SPS-PDSCH on the auxilliary descending related subframe of carrier wave are regardless of the up responder link that pairing is answered.

The second, in descending related subframe set; If do not receive SPS-PDSCH or PDCCH at main member carrier; No matter whether receive PDCCH and/or receive the SPS-PDSCH transmission at auxilliary member carrier; Can not distribute up responder link, thereby not to explicit ACK or the nack message of network side feedback.

The said up responder link that obtains; If the corresponding up responder link of the PDCCH that distributes; Can shine upon acquisition in a certain way through CCE resource that PDCCH takies; Mapping mode can be that the CCE resource that the PDCCH of LTER8/R9 definition takies arrives up responder link resource mapping mode, specifically can be with reference to TS 36.213 agreements.The above-mentioned up responder link that obtains is if the corresponding up responder link of the SPS-PDSCH that distributes is notified to subscriber equipment through explicit signaling by network side.

806, subscriber devices compute ACK/NACK information bit, can adopt in the practical implementation but be not limited to the method for following calculating ACK/NACK information bit:

807, subscriber equipment ceases bit through selected up responder link feeding back ACK/NACK.

The embodiment of the invention generates said descending distribution indication according to the order of the descending related subframe of main carrier after the first auxilliary descending related subframe of carrier wave, the time order and function according to descending sub frame between different descending sub frames in proper order in a descending sub frame; Make subscriber equipment obtain the PDCCH loss situation on the auxilliary descending related subframe of carrier wave in the descending related subframe set, help be the correct response message that feeds back on the responder link of the descending related sub-frame allocation of main carrier through the DAI that comprises at the descending related subframe PDCCH of main carrier; In addition,, need not be the auxilliary up responder link of the descending related sub-frame allocation of carrier wave, reduce the expense of up responder link because the embodiment of the invention is merely the corresponding up responder link of the descending related sub-frame allocation of main carrier.

The method of the generation DAI that adopts in the embodiment of the invention only is that main member carrier distributes the scene of up responder link except being applied to; Can also apply to other scenes, for example: for the different up responder link of the descending related sub-frame allocation of different main carriers, be identical up responder link of the descending related sub-frame allocation of all auxilliary carrier waves in the same descending sub frame.

Embodiment 2:

The application scenarios of the embodiment of the invention is: the TDD communication system that works in carrier aggregation technology.The scheme that the embodiment of the invention adopts under this scene is: be used for the up responder link that last descending sub frame that subscriber equipment receives PDCCH distributes and feed back response message.Of Fig. 9, the system of selection of the responder link that the embodiment of the invention provides comprises:

901, receive Physical Downlink Control Channel or semi-persistent scheduling Physical Downlink Shared Channel in subscriber equipment each descending related subframe in descending related subframe set.Concrete subscriber equipment receives PDCCH or the SPS-PDSCH on the auxilliary descending related subframe of carrier wave, need receive PDCCH or SPS-PDSCH on the descending related subframe of main carrier simultaneously.

902, subscriber equipment obtains the up responder link that is used for uplink ACK/nack message transmission, particularly, obtains up responder link and can comprise following situation:

In embodiments of the present invention, the loss situation of PDCCH is judged through the DAI that carries among the PDCCH that sends in each descending related subframe in each descending sub frame.Be indicated to the sum in all descending related subframes of network side till the current descending sub frame in the preferred descending related subframe set of the DAI of the embodiment of the invention for the PDCCH of subscriber equipment transmission.Like this, the difference of the DAI value of the DAI value descending sub frame previous with it of a descending sub frame has represented to issue in the descending sub frame sum of certain given user's PDCCH.Certainly, the DAI generation method in the present embodiment also can adopt the method that provides in 801 to 802 processes among the embodiment 1.

903, subscriber devices compute ACK/NACK information bit can adopt in the practical implementation but the method for the calculating ACK/NACK information bit that is not limited to provide in 806 processes of embodiment 1.

904, subscriber equipment is through feeding back ACK/nack message bit on the selected up responder link.

The embodiment of the invention is that PDCCH or the SPS-PDSCH on the descending related subframe of a plurality of auxilliary carrier wave in the same descending sub frame distributes identical up responder link, and therefore, the ascending control channel expense that system takies is less.In addition; Because the up responder link that has been the auxilliary descending related sub-frame allocation of carrier wave; In descending related subframe set,, perhaps receive the SPS-PDSCH transmission and on the descending related subframe of auxilliary carrier wave, received the PDCCH transmission if both do not received the PDCCH transmission, also do not received the SPS-PDSCH transmission in the descending related subframe of main carrier; Then can be through being that the up responder link of the auxilliary descending related sub-frame allocation of carrier wave feeds back response message; Can avoid directly not feeding back as in Example 1 response message, therefore, compare embodiment 1; Make not data dispatching on the descending related subframe of main carrier as far as possible of network side, increased the dispatching flexibility of system.

Embodiment 3:

The application scenarios of the embodiment of the invention is: the TDD communication system that is applied to single carrier perhaps works in the FDD communication system of multicarrier.Of Figure 10, the feedback method of the response message that the embodiment of the invention provides comprises:

1001, subscriber equipment receives Physical Downlink Control Channel in descending related subframe set.Wherein in each descending sub frame, receive PDCCH or SPS-PDSCH.

In single-carrier technology, only need on a carrier wave, detect in each subframe.

In present embodiment 3 described single carrier TDD communication systems, descending related subframe set has comprised a plurality of descending related subframe on the same downlink member carrier; In present embodiment 3 described multicarrier FDD communication systems, descending related subframe set has comprised a plurality of descending related subframe in the same descending sub frame.

In the embodiment of the invention, the said PDCCH that receives can be used for indicating the termination of PDSCH transmission or indicating downlink semi-continuous scheduling Physical Downlink Shared Channel.

1002, in order to feed back response message to network side; This process is receiving after Physical Downlink Control Channel loses, and subscriber equipment is retrieved as the up responder link that detects up responder link before losing, that receive last descending related sub-frame allocation of PDCCH as the feedback response message said.

Particularly; In descending related subframe set; When detecting Physical Downlink Control Channel and lose, be retrieved as said detect Physical Downlink Control Channel lose before, the up responder link of last descending related sub-frame allocation that receives PDCCH is as the up responder link of feedback response message.The embodiment of the invention also comprises; When first Physical Downlink Control Channel that in detecting descending related subframe set, sends is lost; If in said descending related subframe set, received SPS-PDSCH, be retrieved as the up responder link of the up responder link of last the descending related sub-frame allocation that receives SPS-PDSCH as the feedback response message; If in said descending related subframe set, do not receive SPS-PDSCH, not to explicit ACK or the nack message of network side feedback.The embodiment of the invention also comprises; When in said descending related subframe set, not detecting Physical Downlink Control Channel and lose, be retrieved as the up responder link of the up responder link of last the descending related sub-frame allocation that receives PDCCH as the feedback response message; If receive only SPS-PDSCH, be retrieved as the up responder link of the up responder link of last the descending related sub-frame allocation that receives SPS-PDSCH as the feedback response message; If both do not received PDCCH, also do not received SPS-PDSCH, be regardless of and mix capable responder link, not to explicit ACK or the nack message of network side feedback.

In embodiments of the present invention, the loss situation of PDCCH is judged through the DAI that carries among the PDCCH that sends in each descending related subframe in each descending sub frame.In said single carrier TDD communication system; For a plurality of descending related subframe in the given downlink member carrier; The DAI that comprises among the PDCCH preferentially generates according to the time order and function of descending sub frame in proper order, and DAI representes to be indicated in the descending related subframe set sum of the PDCCH that sends till the current descending related subframe.In said multicarrier FDD communication system; For the descending related subframe of a plurality of auxilliary carrier wave in the given descending sub frame; The DAI that PDCCH comprises can generate according to any predefined procedure; As from small to large or order from big to small, perhaps from low to high or order from high to low according to the center carrier frequence of downlink member carrier according to downlink member carrier numbering; DAI representes to be indicated in the descending related subframe set sum of the PDCCH that sends till the current descending related subframe.

Further; Said up responder link; If corresponding to the PDCCH on the main member carrier (for single carrier TDD system, described main member carrier is described single carrier), shine upon acquisition in a certain way by the CCE resource that PDCCH takies; Mapping mode can be that the resource that the PDCCH of LTE R8/R9 definition takies arrives up responder link resource mapping mode, specifically can be with reference to TS 36.213 agreements; Said up responder link is if corresponding to the PDCCH on SPS-PDSCH transmission or the secondary member carrier, distributed through the explicit signaling mode by network side.

1003, subscriber devices compute ACK/NACK information bit can adopt in the practical implementation but the method for the calculating ACK/NACK information bit that is not limited to provide in 806 processes of embodiment 1.

1004, subscriber equipment is through feeding back ACK/nack message bit on the selected up responder link.

Adopt the communication system of the embodiment of the invention; Because network side can confirm that the PDCCH on which the descending related subframe in the descending related subframe set is correctly received by subscriber equipment through the up responder link that subscriber equipment adopts; Therefore; PDSCH to this part PDCCH indication retransmits if desired, and network side can promote retransmission efficiency, the throughput of elevator system through adjusting redundancy versions adaptively.

Embodiment 4:

The application scenarios of the embodiment of the invention is: the TDD communication system of using carrier aggregation technology.Scheme in that the embodiment of the invention under the said scene adopts is: be used for subscriber equipment detecting PDCCH lose before, receive the up responder link feedback response message of last descending related sub-frame allocation of PDCCH at main member carrier.The feedback method of the response message that the embodiment of the invention provides comprises:

1101, the embodiment of the invention is that example describes with the descending related subframe set shown in Fig. 1, suppose that downlink member carrier 1 is main member carrier, and downlink member carrier 2,3,4 is auxilliary member carrier.Each descending related subframe in this process in descending related subframe set all need receive; Concrete Physical Downlink Control Channel (PDCCH) or the semi-continuous scheduling Physical Downlink Shared Channel (SPS-PDSCH) that receives on the auxilliary descending related subframe of carrier wave need receive PDCCH or SPS-PDSCH on the descending related subframe of main carrier simultaneously.

1102, in order to feed back response message to network side; Subscriber equipment obtains the up responder link of the up responder link of last descending related sub-frame allocation before said detected losing, receive PDCCH at main member carrier as the feedback response message after detecting Physical Downlink Control Channel transmission and losing.

The first, in descending related subframe set; If lose receiving PDCCH on the descending related subframe of main carrier and on some descending related subframes, receive PDCCH; No matter whether also receive SPS-PDSCH at main member carrier so, use the up responder link receive PDCCH last descending related sub-frame allocation before losing, receive PDCCH at main member carrier up responder link as the feedback response message.Further; In descending related subframe set; Lose if on the descending related subframe of main carrier, receive PDCCH and detect first Physical Downlink Control Channel that sends in the descending sub frame set; If received SPS-PDSCH, be retrieved as the up responder link of the up responder link of last the descending related sub-frame allocation that receives SPS-PDSCH as the feedback response message; If do not receive SPS-PDSCH, not to explicit ACK or the nack message of network side feedback.

The second, in descending related subframe set; Lose if on the descending related subframe of main carrier, received PDCCH and do not detected PDCCH; No matter so whether also received SPS-PDSCH, be used for the up responder link of the up responder link of last the descending related sub-frame allocation that on main member carrier, receives PDCCH as the feedback response message.Further; In descending related subframe set; If receive only SPS-PDSCH in the descending related subframe of main carrier; Can't judge whether that PDCCH loses this moment through the reception of DAI, is used for the up responder link of the up responder link of last the descending related sub-frame allocation that on main member carrier, receives SPS-PDSCH as the feedback response message so.

Three, in descending related subframe set; If do not receive SPS-PDSCH or PDCCH at main member carrier; No matter whether receive PDCCH and/or receive SPS-PDSCH at auxilliary member carrier, subscriber equipment is not to explicit ACK or the nack message of network side feedback.

Said up responder link; If corresponding to the PDCCH on the descending related subframe of main carrier; CCE resource by PDCCH takies is shone upon acquisition in a certain way; Mapping mode can be that the resource that the PDCCH of LTE R8/R9 definition takies arrives up responder link resource mapping mode, specifically with reference to TS 36.213 agreements.If said up responder link corresponding to the PDCCH on SPS-PDSCH on the descending related subframe of main carrier or the descending related subframe of subcarrier, is distributed through the explicit signaling mode by network side.PDCCH or SPS-PDSCH on the descending related subframe of subcarrier are regardless of the up responder link that pairing is answered.

For the generation method and the method for counting of the DAI information that comprises among the PDCCH, adopt in the practical implementation but the method that provides in 801 processes of embodiment 1.Promptly in a descending sub frame, generate said descending distribution indication according to the order on the descending related subframe of main carrier after the descending related subframe of first subcarrier, the time order and function according to descending sub frame between different descending sub frames generates said descending distribution indication in proper order.For the descending related subframe DAI of all subcarriers in same descending sub frame, can according to from small to large order of the numbering of auxilliary member carrier, or from big to small order generate said descending distribution indication field; The descending related subframe of perhaps said all subcarriers in a descending sub frame according to from low to high order of the centre frequency of auxilliary member carrier, or from high to low order generate said descending distribution indication field.

1103, subscriber devices compute ACK/NACK information bit can adopt in the practical implementation but the method for the calculating ACK/NACK information bit that is not limited to provide in 806 processes of embodiment 1.

1104, subscriber equipment is through feeding back ACK/nack message bit on the selected up responder link.

Adopt the communication system of the embodiment of the invention 4, can obtain the advantage of inventive embodiments 1 and inventive embodiments 3 simultaneously.On the one hand,, need not be the up responder link of the descending related sub-frame allocation of subcarrier, reduce the expense of up responder link owing to network side only is the corresponding up responder link of the descending related sub-frame allocation of main carrier; On the other hand; Because network side can be through the up responder link of subscriber equipment employing; Confirm that the PDCCH on which the descending related subframe in the descending related subframe set is correctly received by subscriber equipment, therefore, the PDSCH to this part PDCCH indication retransmits if desired; Network side can promote retransmission efficiency, the throughput of elevator system through adjusting redundancy versions adaptively.

Embodiment 5:

The application scenarios of the embodiment of the invention is: the TDD communication system of using carrier aggregation technology. the scheme that the embodiment of the invention adopts under said scene is: be used for subscriber equipment and receive PDCCH up responder link feedback response message before losing, receive last descending related sub-frame allocation of PDCCH in descending related subframe set in descending related subframe set; Shown in figure 12, the feedback method of response message is embraced and is comprised:

1201, in descending related subframe set, receive Physical Downlink Control Channel transmission and/or the transmission of semi-continuous scheduling Physical Downlink Shared Channel.Concrete subscriber equipment detects PDCCH transmission or the SPS-PDSCH transmission on the auxilliary member carrier, need detect PDCCH transmission or SPS-PDSCH transmission on the main member carrier simultaneously.

In the embodiment of the invention, said Physical Downlink Control Channel can be used for indicating the termination of Physical Downlink Shared Channel transmission or indicating downlink semi-continuous scheduling Physical Downlink Shared Channel.

1202, in order to feed back response message to network side; Receiving after Physical Downlink Control Channel loses, subscriber equipment be retrieved as said receive Physical Downlink Control Channel lose before, receive the up responder link feedback response message of last descending related sub-frame allocation of Physical Downlink Control Channel.

First; In descending related subframe set; If detect Physical Downlink Control Channel and lose, be retrieved as said receive Physical Downlink Control Channel lose before, the up responder link that receives last descending related sub-frame allocation of Physical Downlink Control Channel feeds back response message.Further; When losing as if first Physical Downlink Control Channel that detects transmission in the descending related subframe set; If received SPS-PDSCH in descending related subframe set, be retrieved as the up responder link of the up responder link of last the descending related sub-frame allocation that receives SPS-PDSCH as the feedback response message; If do not receive SPS-PDSCH, not to explicit ACK or the nack message of network side feedback.

The second, in descending related subframe set; Lose if do not detect PDCCH; No matter so whether also received SPS-PDSCH, be used for the up responder link of the up responder link of last the descending related sub-frame allocation that receives PDCCH as the feedback response message; If in descending related subframe set, receive only SPS-PDSCH; Can't judge whether that PDCCH loses this moment through the reception of DAI, is used for the up responder link of the up responder link of last the descending related sub-frame allocation that on main member carrier, receives SPS-PDSCH as the feedback response message so.

The 3rd, in descending related subframe set, do not transmit, do not receive yet the SPS-PDSCH transmission if both received PDCCH, be regardless of and mix capable responder link, also to explicit ACK or the nack message of network side feedback.

1203, subscriber devices compute ACK/NACK information bit can adopt in the practical implementation but the method for the calculating ACK/NACK information bit that is not limited to provide in 806 processes of embodiment 1.

1204, subscriber equipment is through feeding back ACK/nack message bit on the selected up responder link.

Adopt the communication system of the embodiment of the invention; Because network side can be through the up responder link of subscriber equipment employing; Confirm that the PDCCH on those the descending related subframes in the descending related subframe set is correctly received by subscriber equipment, therefore, the PDSCH to this part PDCCH indication retransmits if desired; Network side can promote retransmission efficiency, the throughput of elevator system through adjusting redundancy versions adaptively.

Adopt the communication system of the embodiment of the invention 5, can obtain the advantage of inventive embodiments 2 and inventive embodiments 3 simultaneously.On the one hand, because network side is PDCCH or the identical up responder link of SPS-PDSCH distribution on a plurality of auxilliary member carrier in the same descending sub frame, therefore, the ascending control channel expense that system takies is less.On the other hand; Because network side can be through the up responder link of subscriber equipment employing; Confirm that the PDCCH on those the descending related subframes in the descending related subframe set is correctly received by subscriber equipment, therefore, the PDSCH to this part PDCCH indication retransmits if desired; Network side can promote retransmission efficiency, the throughput of elevator system through adjusting redundancy versions adaptively.

Embodiment 6:

The embodiment of the invention also provides a kind of choice device of responder link; This device mainly is used in the carrier aggregation technology; In descending related subframe set, be included as the main member carrier and the auxilliary member carrier of user device configuration; Shown in figure 13, said feedback device comprises: first receiving element 131, first acquiring unit 132.

Wherein, First receiving element 131 is used in each descending sub frame, receiving Physical Downlink Control Channel transmission or the transmission of semi-continuous scheduling Physical Downlink Shared Channel on the auxilliary member carrier, and receives Physical Downlink Control Channel transmission or the transmission of semi-continuous scheduling Physical Downlink Shared Channel on the main member carrier; First acquiring unit 132 is used in last subframe that receives Physical Downlink Control Channel transmission or the transmission of semi-continuous scheduling Physical Downlink Shared Channel; From being a up responder link of the main member carrier distribution in said last descending sub frame and/or being the up responder link of auxilliary member carrier distribution, obtain a up responder link that is used to feed back response message by preset rules.

During concrete the realization: said first acquiring unit 132 can include but not limited to following two kinds of up responder links that obtain the feedback response message below the implementation:

The first, in last subframe that receives PDCCH transmission or SPS-PDSCH transmission; Lose if subscriber equipment has received PDCCH and in this last subframe, do not detected PDCCH at auxilliary member carrier, then said first acquiring unit 132 is retrieved as the up responder link of interior auxilliary member carrier PDCCH transmission of this subframe or SPS-PDSCH transmission distribution as the up responder link that feeds back response message;

The second, in last subframe that receives PDCCH transmission or SPS-PDSCH transmission; If subscriber equipment has only received PDCCH transmission or SPS-PDSCH transmission or subscriber equipment at main member carrier and received PDCCH transmission or SPS-PDSCH transmission and detected auxilliary member carrier PDCCH at main member carrier and lose, then said first acquiring unit 132 is retrieved as up responder link that main member carrier PDCCH transmission in this subframe or SPS-PDSCH transmission the distribute up responder link as the feedback response message.

The embodiment of the invention also provides the choice device of another kind of responder link; This device can be used in the single-carrier technology; Also can be used in the carrier aggregation technology, shown in figure 14, said choice device comprises: second receiving element 141, second acquisition unit 142.

Wherein, second receiving element 141 is used in each subframe, receiving Physical Downlink Control Channel transmission or the transmission of semi-continuous scheduling Physical Downlink Shared Channel; Second acquisition unit 142 is used for obtaining the up responder link of the corresponding up responder link that distributes of last descending sub frame before said losing of receiving, that receive Physical Downlink Control Channel or the transmission of semi-continuous scheduling Physical Downlink Shared Channel as the feedback response message.

Comprise descending distribution indication field in the Physical Downlink Control Channel that receives in the embodiment of the invention; And the order according to main member carrier behind the earlier auxilliary member carrier in a sub-frame generates said descending distribution indication field, and the time order and function according to subframe between different subframes generates said descending distribution indication field in proper order.For all the auxilliary member carrier DAI in a sub-frame, can according to from small to large order of the numbering of auxilliary member carrier, or from big to small order generate said descending distribution indication field; The auxilliary member carrier of perhaps said all in a sub-frame according to from low to high order of the centre frequency of auxilliary member carrier, or from high to low order generate said descending distribution indication field.

The embodiment of the invention receives Physical Downlink Control Channel transmission or the transmission of semi-continuous scheduling Physical Downlink Shared Channel in each subframe after; Distribute and the interior corresponding up responder link of said each subframe; But after receiving that Physical Downlink Control Channel transmission is lost or the transmission of semi-continuous scheduling Physical Downlink Shared Channel lose; The up responder link of using as the feedback response message in the up responder link of losing the corresponding distribution of last subframe before that selection will receive; So; The up responder link that network side just can pass through to be adopted is confirmed; Data before corresponding Physical Downlink Control Channel transmission of this up responder link or the transmission of semi-continuous scheduling Physical Downlink Shared Channel do not need to retransmit, and for retransmitting receiving the data of Physical Downlink Control Channel transmission after losing, help improving downlink throughput capacity like this.And, adopt after the embodiment of the invention network side can understand accurately which PDCCH has lost, which PDCCH is successfully received by UE institute, be convenient to network side and select appropriate H ARQ retransmission scheme to both of these case respectively.

The embodiment of the invention provides the choice device of responder link can be used for the single carrier scene also to can be used for carrier aggregation scene among Figure 14, and reception condition corresponding under various scenes is following:

The first, when being applied to the single carrier scene, said second receiving element 141 receives Physical Downlink Control Channel transmission or the transmission of semi-continuous scheduling Physical Downlink Shared Channel in each descending sub frame of institute's access carrier.

The second, when being applied to carrier aggregation scene; Said second receiving element 141 receives Physical Downlink Control Channel transmission or the transmission of semi-continuous scheduling Physical Downlink Shared Channel on the auxilliary member carrier in each subframe, and receives Physical Downlink Control Channel transmission or the transmission of semi-continuous scheduling Physical Downlink Shared Channel on the main member carrier.

In carrier aggregation scene, different according to up responder link distribution with situation about receiving, also comprise following three kinds of implementations:

One, in each subframe, be merely under the situation that main member carrier distributes up responder link, it is the up responder link of the up responder link that distributes of main member carrier as the feedback response message that said second acquisition unit 142 obtains in last descending sub frame before said losing of receiving, that receive Physical Downlink Control Channel or the transmission of semi-continuous scheduling Physical Downlink Shared Channel

Two, be that main member carrier distributes under a up responder link, the situation for a up responder link of all auxilliary member carriers distribution in each subframe; If receive in last descending sub frame of Physical Downlink Control Channel transmission or the transmission of semi-continuous scheduling Physical Downlink Shared Channel; Only on auxilliary member carrier, receive Physical Downlink Control Channel transmission or the transmission of semi-continuous scheduling Physical Downlink Shared Channel; Then said second acquisition unit 142 obtains on the auxilliary member carrier, receives the up responder link of the interior up responder link that distributes of last descending sub frame of Physical Downlink Control Channel transmission or the transmission of semi-continuous scheduling Physical Downlink Shared Channel as the feedback response message;

Three, be that main member carrier distributes under a up responder link, the situation for a up responder link of all auxilliary member carriers distribution in each descending sub frame; If receive in last subframe of Physical Downlink Control Channel transmission or the transmission of semi-continuous scheduling Physical Downlink Shared Channel; Only on main member carrier, receive Physical Downlink Control Channel transmission or the transmission of semi-continuous scheduling Physical Downlink Shared Channel; Perhaps on main member carrier and auxilliary member carrier, all receive Physical Downlink Control Channel transmission or the transmission of semi-continuous scheduling Physical Downlink Shared Channel; Then said second acquisition unit 142 obtains on the main member carrier, receives the up responder link of the interior up responder link that distributes of last subframe of Physical Downlink Control Channel transmission or the transmission of semi-continuous scheduling Physical Downlink Shared Channel as the feedback response message.

The embodiment of the invention mainly is used in the communication system; Include but not limited to gsm communication system, cdma communication system, 3-G (Generation Three mobile communication system) and next generation mobile communication system (LTE, LTE-A etc.); As long as adopted single-carrier technology or carrier aggregation technology, all can adopt embodiment feeding back response information provided by the invention.

Through the description of above execution mode, the those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential common hardware, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding; The part that technical scheme of the present invention contributes to prior art in essence in other words can be come out with the embodied of software product, and this computer software product is stored in the storage medium that can read, like the floppy disk of computer; Hard disk or CD etc.; Comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.

The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by said protection range with claim.

Claims

1. the sending method of a descending distribution indication; It is characterized in that; Said method comprises: the order according to the descending related subframe of main carrier after the earlier auxilliary descending related subframe of carrier wave in a descending sub frame generates descending distribution indication, and the time order and function according to descending sub frame between different descending sub frames generates descending distribution indication in proper order;

On physical downlink control channel PDCCH, send the descending distribution indication of said generation.

2. according to the sending method of the said descending distribution indication of claim 1, it is characterized in that, in a descending sub frame, generate descending distribution indication and specifically comprise according to the order of the descending related subframe of main carrier after the earlier auxilliary descending related subframe of carrier wave:

The descending related subframe of all auxilliary carrier waves in a descending sub frame, according to from small to large order of the numbering of auxilliary member carrier, or from big to small order generate said descending distribution indication;

The perhaps descending related subframe of all auxilliary carrier waves in a descending sub frame, according to from low to high order of the centre frequency of auxilliary member carrier, or from high to low order generate said descending distribution indication.

3. the dispensing device of a descending distribution indication is characterized in that, comprising:

Generation unit is used in a descending sub frame, generating descending distribution according to the order of the descending related subframe of main carrier after the auxilliary descending related subframe of carrier wave of elder generation and indicates, and the time order and function according to descending sub frame between different descending sub frames generates descending distribution indication in proper order;

Transmitting element is used for the descending distribution indication of the said generation of transmission on physical downlink control channel PDCCH.

4. the dispensing device of descending distribution indication according to claim 3 is characterized in that said generation unit also comprises first generation unit and second generation unit, wherein

First generation unit is used for the descending related subframe of all auxilliary carrier waves in a descending sub frame, according to from small to large order of the numbering of auxilliary member carrier, or from big to small order generate said descending distribution indication;

Second generation unit is used for the descending related subframe of all auxilliary carrier waves in a descending sub frame, according to from low to high order of the centre frequency of auxilliary member carrier, or from high to low order generate said descending distribution indication.

5. the feedback method of a response message is characterized in that, said method comprises:

Detect the descending related subframe of last main carrier of physical downlink control channel PDCCH;

Be retrieved as the up responder link of the descending related sub-frame allocation of detected last main carrier;

On described up responder link, feed back response message.

6. the feedback method of response message according to claim 5 is characterized in that, the said descending related subframe of last main carrier that detects physical downlink control channel PDCCH comprises before:

Receive the descending distribution indication among the PDCCH; Described descending distribution indication is to generate in such a way: the order according to the descending related subframe of main carrier after the earlier auxilliary descending related subframe of carrier wave in a descending sub frame generates descending distribution indication, and the time order and function according to descending sub frame between different descending sub frames generates descending distribution indication in proper order.

7. the feedback device of a response message is characterized in that, comprising:

Detecting unit is used to detect the descending related subframe of last main carrier of physical downlink control channel PDCCH;

Acquiring unit is used to be retrieved as the up responder link of the descending related sub-frame allocation of detected last main carrier;

Feedback unit is used on described up responder link, feeding back response message.

8. the feedback device of response message according to claim 7 is characterized in that, also comprises

Receiving element; Be used for receiving the descending distribution indication of PDCCH; Wherein said descending distribution indication is to generate in such a way: the order according to the descending related subframe of main carrier after the earlier auxilliary descending related subframe of carrier wave in a descending sub frame generates descending distribution indication, and the time order and function according to descending sub frame between different descending sub frames generates descending distribution indication in proper order.

9. the feedback method of a response message is characterized in that, said method comprises:

Detect last descending sub frame of physical downlink control channel PDCCH;

Obtain the up responder link that detected last descending sub frame distributes;

On described up responder link, feed back response message.

10. the feedback method of response message according to claim 9 is characterized in that, said last descending sub frame that detects physical downlink control channel PDCCH specifically comprises;

In descending related subframe set, detect last descending sub frame of physical downlink control channel PDCCH;

After perhaps detecting PDCCH and losing, and detect PDCCH last descending related subframe before losing, that detect PDCCH.

11. the feedback method of response message according to claim 10, wherein said last subframe that in descending related subframe set, detects physical downlink control channel PDCCH specifically comprises:

Lose if on the auxilliary descending related subframe of carrier wave, receive PDCCH and on last descending sub frame that said PDCCH belongs to, do not detect PDCCH, then obtain the said up responder link that is the up responder link of the auxilliary descending related sub-frame allocation of carrier wave in last descending sub frame as the feedback response message; Perhaps

If only receiving PDCCH on the descending related subframe of main carrier, or losing receiving PDCCH on the descending related subframe of main carrier and on the descending related subframe of auxilliary carrier wave, detect PDCCH, then obtain said up responder link for the descending related sub-frame allocation of main carrier as the up responder link that feeds back response message.

12. the feedback method of response message according to claim 10 after the said PDCCH of detecting loses, and detects PDCCH last descending related subframe before losing, that detect PDCCH and specifically comprises:

In single carrier TDD system or multicarrier FDD system, after detecting PDCCH and losing, and detect PDCCH last descending related subframe before losing, that detect PDCCH;

Perhaps in carrier aggregation TDD system, after detecting PDCCH and losing, detect PDCCH lose before, on said main member carrier, detect last descending related subframe of PDCCH;

Perhaps in carrier aggregation TDD system, after detecting PDCCH and losing, and detect PDCCH before losing, detect last descending related subframe of PDCCH.

13. the feedback method of response message according to claim 12; Wherein said in carrier aggregation TDD system; After detecting PDCCH and losing; Detect PDCCH lose before, detect on said main member carrier that PDCCH comprises descending distribution indication in the step of last descending related subframe of PDCCH; Described descending distribution indication is to generate in such a way: the order according to the descending related subframe of main carrier after the earlier auxilliary descending related subframe of carrier wave in a descending sub frame generates descending distribution indication, and the time order and function according to descending sub frame between different descending sub frames generates descending distribution indication in proper order.

14. the feedback method of response message according to claim 12 is wherein said in carrier aggregation TDD system, after detecting PDCCH and losing, and detect PDCCH before losing, detect last descending related subframe of PDCCH and specifically comprise:

15. the feedback device of a response message is characterized in that, comprising:

Detecting unit is used to detect last descending sub frame of physical downlink control channel PDCCH;

Acquiring unit is used to obtain the up responder link that detected last descending sub frame distributes;

16. feedback device according to claim 15 is characterized in that detecting unit also comprises

First detecting unit is used for gathering last descending sub frame that detects physical downlink control channel PDCCH in descending related subframe;

Second detecting unit after being used to detect PDCCH and losing, and detects PDCCH last descending related subframe before losing, that detect PDCCH.

17. feedback device according to claim 16 is characterized in that, any module below second detecting unit also comprises: