CN101827448A - Method, relay station and terminal for transmitting feedback information - Google Patents
Method, relay station and terminal for transmitting feedback information Download PDFInfo
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- CN101827448A CN101827448A CN200910127206A CN200910127206A CN101827448A CN 101827448 A CN101827448 A CN 101827448A CN 200910127206 A CN200910127206 A CN 200910127206A CN 200910127206 A CN200910127206 A CN 200910127206A CN 101827448 A CN101827448 A CN 101827448A
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Abstract
The invention discloses a method, a relay station and a terminal for transmitting feedback information, which belong to the frequency division duplex type high-level long-term evolution system. In the method, when the terminal receives business data and transmits feedback information to the relay station, if the uplink sub-frame of the feedback information to be transmitted is an uplink relay sub-frame, an uplink sub-frame behind the uplink relay sub-frame is determined as a novel feedback sub-frame, and the feedback information is transmitted on the novel feedback sub-frame. The method, the relay station and the terminal can avoid the loss of the uplink ACK/NACK feedback information of the downlink business transmission in the FDD LTE-A system with the relay station, and improve the business transmission reliability in the FDD LTE-A system with the relay station.
Description
Technical field
The present invention relates to the Frequency Division Duplexing (FDD) advanced long-term evolution system, relate in particular to a kind of method, relay station and terminal that is used for transmitting feedback information.
Background technology
The demand for development of mobile communication is to support higher transmission rate, more perfect signal to cover and higher resource utilization.In order to reach high transfer rate, next generation mobile communication system will adopt more high frequency band transmission signals, and higher frequency bandwidth will be brought bigger path loss simultaneously, influence the network coverage.Relaying (Relay) technology can increase covering and balance, increase cell throughout, and relay station is than the base station, has less relatively deployment cost, therefore relaying is regarded as Long Term Evolution (Long Term Evolution, abbreviation LTE) key technology in evolution system---senior Long Term Evolution (LTE-Advanced the is called for short LTE-A) system.
In the Frequency Division Duplexing (FDD) LTE system of (Frequency Division Dual is called for short FDD), the frequency resource of uplink and downlink is respectively that unit divides in time with the frame.As shown in Figure 1, the length of each radio frames is 10 milliseconds, and it is 1 millisecond subframe that each radio frames comprises 10 length.As the evolution system of the FDD LTE that guarantees backwards compatibility, FDD LTE-A system can keep the frame structure identical with FDD LTE.
In FDD LTE system, the principle of n+4 is satisfied in the feedback timing of business data transmission, promptly at n work song frame, base station/terminal receives data in up/descending sub frame, at n+4 work song frame, the data that base station or terminal basis receive are to terminal or corresponding affirmation of base station feedback or non-affirmation (Acknowledge/Negative Acknowledge is called for short ACK/NACK) information.
In FDD LTE-A system, introduce after the relay station, be equivalent to the transmission of data many a jumping, variation has taken place in the communication pattern of promptly original base station-terminal.With the double bounce system is example, and the communication pattern of accepting the terminal of relay station service becomes the mode of base station-relay station-terminal.At this time, just need to divide respectively the communication resource of a part as base station-relay station in the uplink and downlink resource, promptly mark the communication that a part of subframe is used for base station-relay station, these subframes are called as relay sub-frame.But, consider interference problem, the operation that relay station can't send simultaneously and receive on same frequency resource, if at this moment continue to continue to use the feedback timing of the ACK/NACK information among the FDD LTE, will cause the ACK/NACK feedback information of some relay station-terminal traffic transmission in the system to be lost.
Uplink ACK/nack message with downlink traffic transmission is fed back to example, if 8 work song frames in the current uplink frame are a relay sub-frame (in current wireless frames subframe be numbered 0-9), promptly No. 8 sub-frame of uplink are used for relay station and send data to the base station, so for the LTE-A terminal of accepting the relay station service, relay station sends business datum to this terminal in No. 4 descending sub frames, but relay station can't be received the ACK/NACK feedback information of these terminal corresponding service data in No. 8 sub-frame of uplink.
Summary of the invention
Technical problem to be solved by this invention is a kind of method, relay station and terminal that is used for transmitting feedback information to be provided, thereby to prevent losing of feedback information.
In order to address the above problem, the invention discloses a kind of method that is used for transmitting feedback information, after terminal receives business datum, will be when relay station sends feedback information, if learn that the sub-frame of uplink that will send described feedback information is a uplink relay subframe, determine that then a certain sub-frame of uplink after this uplink relay subframe is new feedback subframe, on described new feedback subframe, send described feedback information.
Further, said method further comprises:
Relay station sends business datum to described terminal after by broadcast the identification information of uplink relay subframe being notified to described terminal;
After described terminal is received described business datum, will be when described relay station sends feedback information, when if the sub-frame of uplink n that will send described feedback information according to the identification information judgment of described uplink relay subframe is uplink relay subframe, lastest imformation according to the feedback position of prior setting is determined new feedback subframe, and sends described feedback information on this feedback subframe.
Further, said method further comprises:
When relay station sends business datum to described terminal, will be relay sub-frame if judge the sub-frame of uplink n of the feedback information of this business datum of carrying, then relay station increases the lastest imformation of feedback position in the control signaling of this business datum;
Described terminal is determined new feedback subframe according to the lastest imformation of feedback position in the described control signaling, and send feedback information to described relay station on new feedback subframe after receiving described business datum and control signaling.
Wherein, the lastest imformation of described feedback position is the side-play amount m of feedback position, and at this moment, the new feedback subframe that described terminal is determined is sub-frame of uplink n+m; Perhaps
The lastest imformation of described feedback position is the sub-frame of uplink identification information, and at this moment, the new feedback subframe that described terminal is determined is the sub-frame of uplink in the described lastest imformation.
The lastest imformation of described feedback position is the indication that feedback position is determined skew, and at this moment, described terminal determines that according to the side-play amount m that sets in advance new feedback subframe is sub-frame of uplink n+m.
When described terminal sends a plurality of feedback information on described new feedback subframe, behind the feedback model generation feedback information according to prior setting, this feedback information is sent to described relay station, and wherein, described feedback model is binding feedback model or multiplexing feedback model.
The invention also discloses a kind of terminal that is used for transmitting feedback information, comprise the judging unit and the feedback unit that connect successively, wherein:
Described judging unit is used to judge whether the sub-frame of uplink n that will carry feedback information is uplink relay subframe, if this sub-frame of uplink is a uplink relay subframe, then will determine new feedback subframe, and the information of described new feedback subframe is sent to feedback unit;
Described feedback unit is used to receive the information of the new feedback subframe that described judging unit sends, and sends feedback information on described new feedback subframe.
Further, in the above-mentioned terminal, described judging unit, obtain the information of uplink relay subframe by broadcast, if judge that according to the information of described uplink relay subframe described sub-frame of uplink n is a uplink relay subframe, then determine new feedback subframe according to the lastest imformation of the feedback position of setting in advance; Perhaps
Described judging unit, read the control signaling of received business datum, if the lastest imformation of carrying feedback position in the described control signaling is judged that then described sub-frame of uplink n is a uplink relay subframe, and is determined new feedback subframe according to the lastest imformation of the feedback position in the described control signaling.
Wherein, the lastest imformation of described feedback position is the side-play amount m of feedback position, and at this moment, the new feedback subframe that described judging unit is determined is sub-frame of uplink n+m; Perhaps
The lastest imformation of described feedback position is the sub-frame of uplink identification information, and at this moment, the new feedback subframe that described judging unit is determined is the sub-frame of uplink in the described lastest imformation; Perhaps
The lastest imformation of described feedback position is the indication that feedback position is determined skew, and at this moment, described judging unit determines that according to the side-play amount m that sets in advance new feedback subframe is sub-frame of uplink n+m.
The invention also discloses a kind of relay station that is used for transmitting feedback information, comprise the broadcast transmitting element, described broadcast transmitting element, be used for increasing the identification information of uplink relay subframe in broadcast, and this broadcast sent to terminal, the identification information of wherein said uplink relay subframe is used for the position that described terminal is known the sub-frame of uplink relay sub-frame.
The invention also discloses a kind of relay station that is used for transmitting feedback information, comprise the judging unit and the transmitting element that connect successively, wherein:
Judging unit will be used to judge whether the sub-frame of uplink n of the feedback information that carries this business datum is relay sub-frame, and judged result is sent to described transmitting element when described terminal send business datum at described relay station;
Described transmitting element, be used to receive the judged result of described judging unit, if judge that described sub-frame of uplink n is a relay sub-frame, then described transmitting element increases the lastest imformation of feedback position in the control signaling of described business datum, and send this control signaling, wherein, the lastest imformation of described feedback position is used for terminal and determines new feedback subframe.
Further, in the above-mentioned relay station, the lastest imformation of described feedback position is the side-play amount m of feedback position, perhaps sub-frame of uplink identification information, the perhaps indication of the definite skew of feedback position.
Adopt method of the present invention, relay station and terminal, can avoid comprising the losing of uplink ACK/NACK feedback information of downlink traffic transmission in the FDD LTE-A system of relay station, improve reliability of service transmission in the FDD LTE-A system that comprises relay station.
Description of drawings
Fig. 1 is existing FDD LTE frame structure schematic diagram;
Fig. 2 is an embodiment of the invention method flow diagram;
Fig. 3 is uplink relay subframe position among the embodiment 2 and an ACK/NACK feedback information position view in the specific embodiment of the invention;
Fig. 4 is uplink relay subframe position among the embodiment 2 and an ACK/NACK feedback information position view in the specific embodiment of the invention.
Embodiment
Main design of the present invention is, when the n sub-frame of uplink is a relay sub-frame, if terminal receives the downlink service data of relay station transmission in the n-4 descending sub frame after, terminal can determine that a certain sub-frame of uplink that n work song frame is offset after the plurality of sub frame position backward is new feedback subframe, and in new feedback subframe, feed back the respective feedback information (being ACK/NACK information) of this business datum, thereby avoid losing of uplink ACK/NACK feedback information to relay station.
Below in conjunction with drawings and the specific embodiments technical solution of the present invention is described in further detail.
The relay station that a kind of ACK/NACK of avoiding feedback information is lost comprises the judging unit and the transmitting element that connect successively, wherein:
Judging unit will be used to judge whether the sub-frame of uplink n of the feedback information that carries this business datum is relay sub-frame, and judged result is sent to described transmitting element when terminal send business datum at relay station;
Transmitting element, be used to receive the judged result of judging unit, if judge that described sub-frame of uplink n is a relay sub-frame, then transmitting element increases the lastest imformation of feedback position in the control signaling of described business datum, and send this control signaling, wherein, the lastest imformation of described feedback position is used for terminal and determines new feedback subframe.
Wherein, the lastest imformation of feedback position can be the side-play amount m of feedback position, perhaps sub-frame of uplink identification information (being new feedback subframe), the perhaps indication of the definite skew of feedback position.
In other embodiments, the relay station that is used for transmitting feedback information, also comprise the broadcast transmitting element, this broadcast transmitting element, be used for increasing the information of uplink relay subframe in broadcast, and this broadcast sent to terminal, the information of wherein said uplink relay subframe is the identification information of uplink relay subframe number, is used for whether the sub-frame of uplink that terminal judges will send feedback information is uplink relay subframe.
Introduce the terminal of the business datum that receives above-mentioned relay station transmission below, this terminal comprises judging unit and the feedback unit that connects successively.Introduce the function of each unit below.
Described judging unit is used to judge whether the sub-frame of uplink n that will carry feedback information is uplink relay subframe, if this sub-frame of uplink is a uplink relay subframe, then will determine new feedback subframe, and the information of described new feedback subframe is sent to feedback unit;
Wherein, judging unit obtains the information of uplink relay subframe by broadcast, and judges according to the information of uplink relay subframe whether sub-frame of uplink n is uplink relay subframe, and determines new feedback subframe according to the lastest imformation of the feedback position of prior setting; Perhaps described judging unit reads the control signaling of received business datum, if the lastest imformation of carrying feedback position in the control signaling, judge that then sub-frame of uplink n is a uplink relay subframe, and determine new feedback subframe according to the lastest imformation of the feedback position in the described control signaling.
When the lastest imformation of feedback position was the side-play amount m of feedback position, the new feedback subframe that judging unit is determined was sub-frame of uplink n+m; When the lastest imformation of feedback position was the sub-frame of uplink identification information, the new feedback subframe that judging unit is determined was the sub-frame of uplink in the lastest imformation; When the lastest imformation of feedback position was the indication of the definite skew of feedback position, the judgment unit judges feedback position needed skew, and determines that according to the good side-play amount m of prior qualification new feedback subframe is sub-frame of uplink n+m.
Described feedback unit is used to receive the information of the new feedback subframe that judging unit sends, and sends feedback information on new feedback subframe.
Wherein, in the time will on new feedback subframe, feeding back the ACK/NACK information of business datum in a plurality of descending sub frames, feedback unit generates ACK/NACK information (being feedback information) according to certain feedback model, feedback model is modes such as binding (bundling) feedback or multiplexing (multiplexing) feedback, appointing in advance and this feedback model can be terminal and relay station, also can be that relay station is indicated to terminal.
Be a relay sub-frame with n sub-frame of uplink in the FDD LTE-A system below, and the LTE-A terminal has received the business datum of relay station in the n-4 descending sub frame is example, introduce the method for a kind of transferring ACK/NACK feedback information, to avoid losing ACK/NACK information, as shown in Figure 2, this method mainly may further comprise the steps:
Step 201, relay station send business datum to the LTE-A terminal in the n-4 descending sub frame;
In this step, relay station is when sending business datum, can in the control signaling of this business datum, increase the lastest imformation of feedback position, this lastest imformation can be feedback position side-play amount m, and feedback position is determined skew indication or sub-frame of uplink sign (the new feedback subframe of appointment just).
Certainly in other embodiments, relay station also can be increases any information in the control signaling, but by broadcast the identification information of relay sub-frame is sent to terminal.
Step 202, the LTE-A terminal receives business datum in n-4 work song frame after, when the LTE-A terminal will send ACK/NACK information on the n sub-frame of uplink, judge whether the n sub-frame of uplink is relay sub-frame, if, enter step 203, otherwise send ACK/NACK information according to the method for existing FDD LTE agreement regulation;
In this step, the LTE-A terminal can judge whether the n sub-frame of uplink is relay sub-frame according to the corresponding control signaling of the business datum that is received, as, the LTE-A terminal reads the control signaling, judge the lastest imformation that wherein carries feedback position, just can judge that the n sub-frame of uplink is a relay sub-frame.
Certainly in other embodiments, the LTE-A terminal also can be according to the identification information of the relay sub-frame of carrying in the broadcast that is received, and whether contrast the n sub-frame of uplink is relay sub-frame.
Step 203, the LTE-A terminal is determined new feedback subframe according to the lastest imformation of feedback position, and sends ACK/NACK information on new feedback subframe;
In this step, when the lastest imformation of the feedback position that the LTE-A terminal reads from the control signaling is feedback position side-play amount m, just can determine that the n+m sub-frame of uplink is new feedback subframe, the lastest imformation of the feedback position that reads when the LTE-A terminal is that feedback position is when determining the skew indication, can determine that then the n+m sub-frame of uplink is new feedback subframe according to the feedback position side-play amount m of prior setting (perhaps from broadcast, obtaining), when the lastest imformation of the feedback position that reads when the LTE-A terminal is the sub-frame of uplink sign, just can determine that this sub-frame of uplink is the new feedback subframe of appointment.
Certainly in other embodiments, the LTE-A terminal can determine that according to after acquisition relay sub-frame identification information determines that the n sub-frame of uplink is relay sub-frame from broadcast the n+m sub-frame of uplink is new feedback subframe according to the feedback position side-play amount m of prior setting (perhaps obtaining) from broadcast.
In above-mentioned flow process, after the LTE-A terminal is determined new feedback subframe, on this subframe, feed back the corresponding ACK/NACK information of business datum in a plurality of descending sub frames possibly, at this moment, the LTE-A terminal will generate ACK/NACK information (being feedback information) according to certain feedback model, wherein, feedback model is modes such as binding (bundling) feedback or multiplexing (multiplexing) feedback, appointing in advance and this feedback model can be terminal and relay station, also can be that relay station is indicated to terminal.
The process that specifies above-mentioned transferring ACK/NACK feedback information below in conjunction with several practical application scenes is how to avoid losing of ACK/NACK feedback information.
FDD LTE-A system as shown in Figure 3, one group of 40 sub-frame number is 0-39, wherein, 0,8,16,24, No. 32 sub-frame of uplink is a relay sub-frame, is used for relay station and sends data to the base station.Because relay station can not receive and send data simultaneously on same frequency resource, therefore, according to the ACK/NACK feedback timing in the existing FDDLTE agreement, if after the business datum of reception from relay station, relay station can't receive the corresponding ACK/NACK feedback information of these subframe business datums to terminal in 4,12,20, No. 28 descending sub frames of current this group subframe.Therefore, can adopt the present invention program, after the business datum that to be the LTE-A terminal receive in 4,12,20, No. 28 descending sub frames from relay station, can be to relay station feeding back ACK/nack message after being offset the experimental process frame number backward on the feedback position basis of existing FDD LTE agreement regulation, and the offset information of this feedback position can be indicated to corresponding LTE-A terminal in the control information that 4,12,20, No. 28 descending sub frames send by relay station.
In this example, (it is the DCI format 4 for a mark for Downlink Control Information, DCI) form, comprises the information that is used to represent the feedback position side-play amount in the DCI format 4 at a kind of new Downlink Control Information of LTE-A Terminal Design.In the DCI format 4, there is the information of 2 bits to indicate the side-play amount of current LTE-A terminal feeding back ACK/nack message position, 00 expression non-migration, 01 expression is offset 1 subframe feeding back ACK/nack message backward, 10 expressions are offset 2 subframe feeding back ACK/nack messages backward, and 11 expressions are offset 3 subframe feeding back ACK/nack messages backward.For example, relay station sends business datum and corresponding control information DCI format 4 to certain LTE-A terminal in 4 work song frames, the information of corresponding ACK/NACK feedback position skew indicating bit is 01 in this DCI format 4, then for the downlink service data of 4 work song frames, this LTE-A terminal is fed back corresponding ACK/NACK information at 9 work song frames to relay station, fills with vertical line in the drawings and represents.
In the DCI format 4 in this example, can comprise 1 bit indication information further, be used to indicate the feedback model of the ACK/NACK information of current terminal.The feedback model of multiplexing (multiplexing) is adopted in 0 expression, and the feedback model of binding (bundling) is adopted in 1 expression.For example, relay station sends business datum and corresponding control information DCI format 4 to certain LTE-A terminal in 12 work song frames, the information of corresponding ACK/NACK feedback model indicating bit is 0 in this DCI format 4, the information of feedback shift indicating bit is 01, and relay station also sends professional in 13 work song frames to this LTE-A terminal, then for the downlink service data of No. 12 and 13 work song frames, this LTE-A terminal generates two ACK/NACK information, and will feed back at No. 17 sub-frame of uplink behind these two ACK/NACK information multiplexings.
As shown in Figure 4, in FDD LTE-A system, one group of 40 sub-frame number is 0-39, and 8,16, No. 32 sub-frame of uplink wherein are used for relay station as relay sub-frame and send data to the base station, fills with horizontal line in the drawings and represents.Because relay station can not receive and send data simultaneously on same frequency resource, then according to the ACK/NACK feedback timing in the existing FDD LTE agreement, terminal is in 4,12, No. 28 descending sub frames (fill with graticule line in the drawings and represent) after the business datum of reception from relay station, relay station can't receive the corresponding ACK/NACK feedback information of these subframe business datums, cause losing of feedback information, the reliability that causes transmitting reduces.Therefore can adopt the solution of the present invention, after the business datum that to be the LTE-A terminal receive in 4,12, No. 28 descending sub frames from relay station, will be to relay station feeding back ACK/nack message after being offset the experimental process frame number backward on the feedback position basis of existing FDD LTE agreement regulation, and the side-play amount of this feedback position is appointed in advance.Relay station is notified the uplink relay subframe number of current configuration to the LTE-A terminal that communicates with this relay station, and terminal is according to the uplink relay subframe of relay station indication number and the feedback position side-play amount appointed is in advance determined the feedback position of ACK/NACK information and to relay station transmission ACK/NACK information.
For example, the unified side-play amount of appointing is 1 subframe, relay station is a relay sub-frame by 8,16, No. 32 current sub-frame of uplink of broadcast notice LTE-A terminal, then for the business transmission of relay station in 4,12, No. 28 descending sub frames, meeting of LTE-A terminal judges feedback position and the collision of uplink relay subframe position, then the LTE-A terminal will send ACK/NACK information respectively in 9,17, No. 33 sub-frame of uplink of subframe, fill with vertical line in the drawings and represent.
In this example, the pattern of LTE-A terminal feeding back ACK/nack message is determined by the mode of appointing in advance.For example, appoint if the collision of ACK/NACK feedback information position and uplink relay subframe position, and when needing to feed back a plurality of ACK/NACK information in same subframe, terminal is fed back corresponding ACK/NACK information by the pattern of multiplexing feedback.For example, downlink service data at a certain LTE-A terminal is all arranged, then in sub-frame of uplink 9, feed back behind the corresponding ACK/NACK information multiplexing of this terminal to business datum in these two subframes at 4 and No. 5 descending sub frames.
Still FDD LTE-A system as shown in Figure 4, terminal is in 4,12, No. 28 descending sub frames (fill with graticule line in the drawings and represent) after the business datum of reception from relay station, can adopt the present invention program, promptly after being offset the experimental process frame number backward on the feedback position basis of existing FDD LTE agreement regulation, send feedback information to relay station.And whether relay station can the subframe position of the corresponding ACK/NACK feedback information of indication need to be offset in the control information that sends to the LTE-A terminal backward, and the side-play amount of concrete ACK/NACK feedback information position can be appointed in advance.For example, relay station needs skew by the control signaling of 4,12, No. 28 descending sub frames to LTE-A terminal indication feedback position, and terminal is determined the subframe position of ACK/NACK feedback information and send ACK/NACK information to relay station in corresponding subframe according to the indication of relay station and the feedback position side-play amount of agreement.
In this example, at a kind of new DCI form of LTE-A Terminal Design, it is DCI format 4 a for a mark.In DCI format 4 a, there is the information of 1 bit to indicate the position of current LTE-A terminal feeding back ACK/nack message whether to need skew, 0 expression non-migration, 1 expression skew.And if the information of agreement skew indicating bit is 1 in this example, the subframe position of terminal feeding back ACK/nack message is offset 1 subframe numbers backward so.
For example, relay station sends business datum and corresponding control information DCI format 4 a to the LTE-A terminal in 4,12, No. 28 descending sub frames, the information of corresponding ACK/NACK feedback shift indicating bit all is changed to 1 in these DCI format 4s a, then for the downlink service data of relay station at 4,12,28 work song frames, corresponding LTE-A terminal is fed back corresponding ACK/NACK information at 9,17, No. 33 sub-frame of uplink to relay station, fills with vertical line in the drawings and represents.
In this example, the pattern of LTE-A terminal feeding back ACK/nack message is determined by the mode of appointing in advance.For example, appoint if the collision of ACK/NACK feedback information position and uplink relay subframe position, and when needing to feed back a plurality of ACK/NACK information in same subframe, terminal is fed back corresponding ACK/NACK information by the pattern of multiplexing feedback.For example, downlink service data at a certain LTE-A terminal is all arranged, then in sub-frame of uplink 9, feed back behind the corresponding ACK/NACK information multiplexing of this terminal to business datum in these two subframes at 4 and No. 5 descending sub frames.
In order to guarantee backwards compatibility, the present invention also provides a kind of method that is used for transmitting feedback information, be that relay station will be in the n descending sub frame when the LTE terminal sends business datum, earlier judge whether the n+4 sub-frame of uplink is relay sub-frame, if, then relay station does not send business datum to the LTE terminal in the n descending sub frame, thereby avoids the ACK/NACK feedback information position and the uplink relay subframe collision of LTE terminal.Like this, both guaranteed can not cause losing of ACK/NACK information again to the backwards compatibility of LTE terminal and making full use of of resource.
From the foregoing description as can be seen, in comprising the FDD LTE-A system of relay station, the method of the application of the invention, relay station and terminal, solve the problem that the corresponding ACK/NACK feedback information of introducing the part downlink service data that relay station sends after the relay station is lost, guaranteed the reliability of transmission.
Certainly; the present invention can also have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of claims of the present invention.
Claims (12)
1. a method that is used for transmitting feedback information is characterized in that,
After terminal receives business datum, will be when relay station sends feedback information, if learn that the sub-frame of uplink that will send described feedback information is a uplink relay subframe, determine that then a certain sub-frame of uplink after this uplink relay subframe is new feedback subframe, on described new feedback subframe, send described feedback information.
2. the method for claim 1 is characterized in that, this method further comprises:
Relay station sends business datum to described terminal after by broadcast the identification information of uplink relay subframe being notified to described terminal;
After described terminal is received described business datum, will be when described relay station sends feedback information, when if the sub-frame of uplink n that will send described feedback information according to the identification information judgment of described uplink relay subframe is uplink relay subframe, lastest imformation according to the feedback position of prior setting is determined new feedback subframe, and sends described feedback information on this feedback subframe.
3. the method for claim 1 is characterized in that, this method further comprises:
When relay station sends business datum to described terminal, will be relay sub-frame if judge the sub-frame of uplink n of the feedback information of this business datum of carrying, then relay station increases the lastest imformation of feedback position in the control signaling of this business datum;
Described terminal is determined new feedback subframe according to the lastest imformation of feedback position in the described control signaling, and send feedback information to described relay station on new feedback subframe after receiving described business datum and control signaling.
4. as claim 2 or 3 described methods, it is characterized in that,
The lastest imformation of described feedback position is the side-play amount m of feedback position, and at this moment, the new feedback subframe that described terminal is determined is sub-frame of uplink n+m; Perhaps
The lastest imformation of described feedback position is the sub-frame of uplink identification information, and at this moment, the new feedback subframe that described terminal is determined is the sub-frame of uplink in the described lastest imformation.
5. method as claimed in claim 3 is characterized in that,
The lastest imformation of described feedback position is the indication that feedback position is determined skew, and at this moment, described terminal determines that according to the side-play amount m that sets in advance new feedback subframe is sub-frame of uplink n+m.
6. as claim 2 or 3 described methods, it is characterized in that,
When described terminal sends a plurality of feedback information on described new feedback subframe, behind the feedback model generation feedback information according to prior setting, this feedback information is sent to described relay station, and wherein, described feedback model is binding feedback model or multiplexing feedback model.
7. a terminal that is used for transmitting feedback information is characterized in that, comprises the judging unit and the feedback unit that connect successively, wherein:
Described judging unit is used to judge whether the sub-frame of uplink n that will carry feedback information is uplink relay subframe, if this sub-frame of uplink is a uplink relay subframe, then will determine new feedback subframe, and the information of described new feedback subframe is sent to feedback unit;
Described feedback unit is used to receive the information of the new feedback subframe that described judging unit sends, and sends feedback information on described new feedback subframe.
8. terminal as claimed in claim 7 is characterized in that,
Described judging unit, obtain the information of uplink relay subframe by broadcast, if judge that according to the information of described uplink relay subframe described sub-frame of uplink n is a uplink relay subframe, then determine new feedback subframe according to the lastest imformation of the feedback position of setting in advance; Perhaps
Described judging unit, read the control signaling of received business datum, if the lastest imformation of carrying feedback position in the described control signaling is judged that then described sub-frame of uplink n is a uplink relay subframe, and is determined new feedback subframe according to the lastest imformation of the feedback position in the described control signaling.
9. terminal as claimed in claim 8 is characterized in that,
The lastest imformation of described feedback position is the side-play amount m of feedback position, and at this moment, the new feedback subframe that described judging unit is determined is sub-frame of uplink n+m; Perhaps
The lastest imformation of described feedback position is the sub-frame of uplink identification information, and at this moment, the new feedback subframe that described judging unit is determined is the sub-frame of uplink in the described lastest imformation; Perhaps
The lastest imformation of described feedback position is the indication that feedback position is determined skew, and at this moment, described judging unit determines that according to the side-play amount m that sets in advance new feedback subframe is sub-frame of uplink n+m.
10. relay station that is used for transmitting feedback information, it is characterized in that, comprise the broadcast transmitting element, described broadcast transmitting element, be used for increasing the identification information of uplink relay subframe in broadcast, and this broadcast sent to terminal, the identification information of wherein said uplink relay subframe is used for the position that described terminal is known the sub-frame of uplink relay sub-frame.
11. a relay station that is used for transmitting feedback information is characterized in that, comprises the judging unit and the transmitting element that connect successively, wherein:
Judging unit will be used to judge whether the sub-frame of uplink n of the feedback information that carries this business datum is relay sub-frame, and judged result is sent to described transmitting element when described terminal send business datum at described relay station;
Described transmitting element, be used to receive the judged result of described judging unit, if judge that described sub-frame of uplink n is a relay sub-frame, then described transmitting element increases the lastest imformation of feedback position in the control signaling of described business datum, and send this control signaling, wherein, the lastest imformation of described feedback position is used for terminal and determines new feedback subframe.
12. relay station as claimed in claim 11 is characterized in that,
The lastest imformation of described feedback position is the side-play amount m of feedback position, perhaps sub-frame of uplink identification information, the perhaps indication of the definite skew of feedback position.
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| CN200910127206A CN101827448A (en) | 2009-03-05 | 2009-03-05 | Method, relay station and terminal for transmitting feedback information |
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| CN200910127206A CN101827448A (en) | 2009-03-05 | 2009-03-05 | Method, relay station and terminal for transmitting feedback information |
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| CN101827448A true CN101827448A (en) | 2010-09-08 |
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| CN200910127206A Pending CN101827448A (en) | 2009-03-05 | 2009-03-05 | Method, relay station and terminal for transmitting feedback information |
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