CN105790895A - Realization method and device of hybrid automatic repeat request (HARQ) feedback - Google Patents
Realization method and device of hybrid automatic repeat request (HARQ) feedback Download PDFInfo
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- CN105790895A CN105790895A CN201610262850.8A CN201610262850A CN105790895A CN 105790895 A CN105790895 A CN 105790895A CN 201610262850 A CN201610262850 A CN 201610262850A CN 105790895 A CN105790895 A CN 105790895A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1861—Physical mapping arrangements
Abstract
The present invention discloses a realization method and device of HARQ feedback. The method comprises the steps of feeding back the ACK/NACK information corresponding to a downlink subframe (n-k) on an uplink subframe n of the time division duplex (TDD) uplink and downlink reference configuration indication, wherein k belongs to K, so that the ACK/NACK information corresponding to the downlink data can be fed back timely and accurately, and accordingly, the accurate data retransmission can be executed, and further the system performances are guaranteed effectively.
Description
The present patent application is that filing date on 03 09th, 2012, Application No. 201210062357.3 are invention entitled
The divisional application of the patent application of " implementation method of a kind of HARQ feedback and device ".
Technical field
The present invention relates to the communications field, particularly to implementation method and the device of a kind of HARQ feedback.
Background technology
At present, LTE (Long Term Evolution, Long Term Evolution) supports three kinds of duplex modes, respectively FDD
(Frequency Division Duplex, FDD), H-FDD (Half FDD, Half-Frequency Division Duplex) and TDD (Time
Division Duplex, time division duplex).
Wherein, FDD refers to that uplink and downlink transfer are carried out on different carrier wave frequency ranges, it is allowed to base station and terminal are same
Shi Jinhang signal receives and signal sends；TDD refers to that uplink is carried out on identical carrier wave frequency range with downlink transfer, it is allowed to
Base station and terminal carry out signal transmission/signal in the different time periods respectively and receive, or, signal reception/signal sends.
LTE and before wireless communication system in, a community is only configured with a carrier wave, in LTE system
The a width of 20MHz of big band, the most as shown in Figure 1.
In LTE-A (Long Term Evolution-Advanced, long-term evolution upgrading) system, the peak value speed of system
Rate has huge raising than LTE, it is desirable to reach descending 1Gbps, up 500Mbps.If only one maximum bandwidth of use is
The carrier wave of 20MHz is unable to reach peak-rate requirements.Therefore, lte-a system needs the bandwidth that terminal extension can use,
Thus introduce CA (Carrier Aggregation, carrier aggregation) technology, will multiple companies under same eNB (base station)
Continuous or discontinuous carrier aggregation together, be terminal service simultaneously, the speed needed for offer.These loads condensed together
Ripple is also called CC (component carrier, member carrier).Each community can be a member carrier, under different eNB
Community (member carrier) can not be polymerized.In order to ensure that the UE of LTE system can work under each carrier wave being polymerized, each
Carrier wave maximum is less than 20MHz, the most as shown in Figure 2.4 loads that can be polymerized are had under the base station of the LTE-A shown in fig. 2
Ripple, base station can carry out data transmission with terminal, to improve throughput of system on 4 carrier waves simultaneously.
LTE does not support cross-system carrier aggregation at present, i.e. FDD carrier wave can only carry out carrier aggregation with FDD carrier wave, and TDD carries
Ripple can only carry out carrier aggregation with TDD carrier wave.
In LTE system, fdd mode and tdd mode are all radio frames 10ms, subframe 1ms.For each
The radio frames of tdd mode, defines seven kinds of TDD ascending-descending subframes configurations, and the most as shown in table 1, wherein D represents DL subframe, U generation
Table UL subframe, S represents the special subframe of TDD system.
Table 1
(configuration of TDD ascending-descending subframes)
Under the fdd mode of LTE system, terminal receives downlink data in subframe n-4, and in sub-frame of uplink n, feedback should
Data on descending sub frame are the need of the signaling retransmitted, i.e. feeding back ACK/nack message, also referred to as PDSCH HARQ
(Physical Downlink Shared Channel.Hybrid Automatic Repeat reQuest, physical down is common
Enjoy Channel Physical hybrid automatic repeat-request) feedback.When carrier aggregation, the ACK/ that in subframe n-4, multiple descending carriers are corresponding
Nack message will feed back in sub-frame of uplink n simultaneously.
Under the tdd mode of LTE system, UE may feed back corresponding to multiple descending sub frames at same sub-frame of uplink
ACK/NACK information, i.e. UE detect in descending sub frame n-k PDSCH transmission or indicating downlink semi-continuous scheduling release
PDCCH, feeds back the ACK/NACK information of correspondence, wherein k ∈ K in sub-frame of uplink n, and the value of set K is upper and lower with the TDD of system
Row configuration and concrete subframe number are relevant, the most as shown in table 2；Wherein, particularly, for conventional CP (Cyclic
Prefix, Cyclic Prefix) under special subframe configuration 0 and 4 under special subframe configuration 0 and 5, and extension CP, special subframe without
ACK/NACK feeds back, i.e. terminal is not for special subframe feeding back ACK/nack message.
Table 2
(the descending relevant K value of TDD: K:{k0,k1,…kM-1})
As shown in table 2, the order arrangement of multiple radio frames, even in radio frames a, last subframe is k, then radio frames a+1
In first subframe be k+1, table 2 only give as a example by a radio frames each sub-frame of uplink for K in the case of, wherein
N-k < 0 descending sub frame represented in previous radio frames.
But, owing to current LTE does not support cross-system carrier aggregation, therefore, the most do not design and there is presently no TDD system
The HARQ feedback scheme of downlink data when carrying out carrier aggregation with FDD system.
Summary of the invention
The embodiment of the present invention provides the implementation method of a kind of HARQ feedback, in order to when cross-system carries out carrier aggregation, suitable
Profit realizes HARQ feedback.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
A kind of implementation method of HARQ feedback, including:
The TDD up-downgoing reference configuration used when determining and carry out PDSCH HARQ feedback for FDD descending carrier；
The all descending sub frames comprised by FDD descending carrier according to described TDD up-downgoing reference configuration are divided into two classes, and first
The descending sub frame of class descending sub frame corresponding described TDD up-downgoing reference configuration instruction is or/and special subframe, Equations of The Second Kind descending sub frame
The sub-frame of uplink of corresponding described TDD up-downgoing reference configuration instruction；
ACK/NACK information corresponding for described first kind descending sub frame is indicated according to described TDD up-downgoing reference configuration
PDSCH HARQ feedback sequential relationship is fed back, and by ACK/ corresponding for descending sub frame m in described Equations of The Second Kind descending sub frame
After subframe m+3 that TDD up-downgoing reference configuration indicates first meets on pre-conditioned sub-frame of uplink nack message
Feed back.
A kind of implementation method of HARQ feedback, including:
Determine that the TDD up-downgoing reference that end side is used when carrying out PDSCH HARQ feedback for FDD descending carrier is joined
Put；
The all descending sub frames comprised by FDD descending carrier according to described TDD up-downgoing reference configuration are divided into two classes, and first
The descending sub frame of class descending sub frame corresponding described TDD up-downgoing reference configuration instruction is or/and special subframe, Equations of The Second Kind descending sub frame
The sub-frame of uplink of corresponding described TDD up-downgoing reference configuration instruction；
Receive under the described first kind according to the PDSCH HARQ feedback sequential relationship of described TDD up-downgoing reference configuration instruction
The ACK/NACK information that row subframe is corresponding, and TDD up-downgoing reference configuration instruction subframe m+3 after first meet
ACK/NACK information corresponding for descending sub frame m in described Equations of The Second Kind descending sub frame is received on pre-conditioned sub-frame of uplink.
A kind of HARQ feedback realize device, including:
Determine unit, the TDD up-downgoing used in time determining and carry out PDSCH HARQ feedback for FDD descending carrier
Reference configuration；
Processing unit, for all descending sub frames comprised by FDD descending carrier according to described TDD up-downgoing reference configuration
Be divided into two classes, the descending sub frame of first kind descending sub frame corresponding described TDD up-downgoing reference configuration instruction or/and special subframe,
The sub-frame of uplink of Equations of The Second Kind descending sub frame corresponding described TDD up-downgoing reference configuration instruction；
Communication unit, is used for ACK/NACK information corresponding for described first kind descending sub frame according to described TDD up-downgoing
The PDSCH HARQ feedback sequential relationship of reference configuration instruction is fed back, and by descending son in described Equations of The Second Kind descending sub frame
After subframe m+3 that TDD up-downgoing reference configuration indicates first of ACK/NACK information corresponding for frame m meets pre-conditioned
Sub-frame of uplink on feed back.
A kind of HARQ feedback realize device, including:
Determine unit, for determining the TDD that end side is used when carrying out PDSCH HARQ feedback for FDD descending carrier
Up-downgoing reference configuration；
Control unit, for all descending sub frames comprised by FDD descending carrier according to described TDD up-downgoing reference configuration
Be divided into two classes, the descending sub frame of first kind descending sub frame corresponding described TDD up-downgoing reference configuration instruction or/and special subframe,
The sub-frame of uplink of Equations of The Second Kind descending sub frame corresponding described TDD up-downgoing reference configuration instruction；
Communication unit, for connecing according to the PDSCH HARQ feedback sequential relationship of described TDD up-downgoing reference configuration instruction
Receive the ACK/NACK information that described first kind descending sub frame is corresponding, and the instruction of TDD up-downgoing reference configuration subframe m+3 it
After first meet and on pre-conditioned sub-frame of uplink, receive ACK/ corresponding for descending sub frame m in described Equations of The Second Kind descending sub frame
Nack message.
In sum, in the embodiment of the present invention, under the TDD carrier wave application scenarios with FDD DL carrier aggregation, again set
Count a kind of PDSCH HARQ feedback scheme, particularly as follows: terminal carries out PDSCH HARQ according to determine for FDD descending carrier
The TDD up-downgoing reference configuration used during feedback, all descending sub frames comprised by FDD descending carrier are divided into two classes, and first
The descending sub frame of class descending sub frame correspondence TDD up-downgoing reference configuration instruction is or/and special subframe, and Equations of The Second Kind descending sub frame is corresponding
The sub-frame of uplink of TDD up-downgoing reference configuration instruction, and by ACK/NACK information corresponding for first kind descending sub frame according to TDD
The PDSCH HARQ feedback sequential relationship of up-downgoing reference configuration instruction is fed back, and by descending in Equations of The Second Kind descending sub frame
After subframe m+3 that TDD up-downgoing reference configuration indicates first of ACK/NACK information corresponding to subframe m meets default bar
Feeding back on the sub-frame of uplink of part, accordingly, base station also receives the ACK/NACK information of end side feedback according to same way.
So, terminal accurately and in time to the ACK/NACK information that base station feedback downlink data is corresponding, thus can make the base station can root
Carry out data accurately according to the ACK/NACK information obtained to retransmit, and then systematic function has been effectively ensured.
Accompanying drawing explanation
Fig. 1 is LTE system distribution of carriers schematic diagram under prior art；
Fig. 2 is distribution of carriers schematic diagram under lte-a system CA technology under prior art；
Fig. 3 is that in this gallbladder embodiment, terminal carries out PDSCH HARQ feedback flow chart；
Fig. 4 is sub-frame classification schematic diagram in FDD descending carrier in the embodiment of the present invention；
Fig. 5 is to carry out ACK/NACK information feedback first method for Equations of The Second Kind descending sub frame in the embodiment of the present invention to show
It is intended to；
Fig. 6 is to carry out ACK/NACK information feedback second method for Equations of The Second Kind descending sub frame in the embodiment of the present invention to show
It is intended to；
Fig. 7 is to carry out ACK/NACK information for Equations of The Second Kind descending sub frame in the embodiment of the present invention to feed back the third method and show
It is intended to；
Fig. 8 and Fig. 9 is to carry out ACK/NACK information for Equations of The Second Kind descending sub frame in the embodiment of the present invention to feed back the 4th kind
Method schematic diagram；
Figure 10 is to carry out ACK/NACK information feedback fifth method for Equations of The Second Kind descending sub frame in the embodiment of the present invention
Schematic diagram；
Figure 11-Figure 24 is that the PDSCH HARQ feedback sequential that in the embodiment of the present invention, various TDD uplink-downlink configuration are corresponding is closed
System；
Figure 25 is that in the embodiment of the present invention, base station receives PDSCH HARQ feedback flow chart；
Figure 26 is termination function structural representation in the embodiment of the present invention；
Figure 27 is base station functions structural representation in the embodiment of the present invention.
Detailed description of the invention
Carry out the application scenarios of carrier aggregation for cross-system, in the embodiment of the present invention, devise a kind of new HARQ anti-
Feedback scheme.
Below in conjunction with the accompanying drawings the preferred embodiment of the present invention is described in detail.
In the embodiment of the present invention, it is also preferred that the left TDD carrier wave is polymerized as main carrier with FDD descending carrier, i.e. for
When FDD descending carrier carries out PDSCH HARQ feedback, corresponding ACK/NACK information can only be enterprising at main carrier (i.e. TDD carrier wave)
Row transmission, then, refering to shown in Fig. 3, the detailed process that terminal carries out PDSCH HARQ feedback is as follows:
Step 300: the TDD up-downgoing that terminal is used when determining and carry out PDSCH HARQ feedback for FDD descending carrier
Reference configuration, i.e. determines the up son that may be used for carrying ACK/NACK information corresponding to FDD descending carrier on TDD carrier wave
Frame.For the ease of describing, in subsequent embodiment, will " be used when carrying out PDSCH HARQ feedback for FDD descending carrier
TDD up-downgoing reference configuration " it is referred to as " the TDD up-downgoing reference configuration that FDD carrier wave is corresponding ", it is possible to the most referred to as " TDD
Up-downgoing reference configuration ".
In the present embodiment, preferably, terminal TDD up-downgoing reference configuration can be that LTE TDD system is supported seven kinds
The one of configuration instruction, referring particularly to shown in Fig. 1, but is not limited to this.Particularly as follows:
TDD uplink-downlink configuration actually used on TDD carrier wave can be defined as TDD up-downgoing reference configuration by terminal；Can
So that the TDD uplink-downlink configuration configured for PDSCH HARQ feedback on TDD carrier wave is defined as TDD up-downgoing reference configuration
(the TDD uplink-downlink configuration that this configuration may be actually used from TDD carrier wave is different)；Network side high-level signaling can also be notified
A TDD uplink-downlink configuration be defined as TDD up-downgoing reference configuration, wherein, the TDD uplink-downlink configuration bag of high-level signaling notice
The all sub-frame of uplink contained are the subset of all sub-frame of uplink comprised on main carrier；Can also will confirm according to predetermined way
One TDD uplink-downlink configuration is defined as TDD up-downgoing reference configuration, such as: being always due up TDD up-downgoing reference configuration is TDD
Uplink-downlink configuration 5；Or, when using the configuration of 5ms switching point on TDD carrier wave, agreement TDD up-downgoing reference configuration is that TDD is upper and lower
Row configuration 2；When on TDD carrier wave use 10ms switching point configuration time, agreement TDD up-downgoing reference configuration be reference configuration be TDD
Uplink-downlink configuration 5.
Step 310: all descending son that FDD descending carrier is comprised by terminal according to the TDD up-downgoing reference configuration obtained
Frame is divided into two classes, the descending sub frame of first kind descending sub frame correspondence TDD up-downgoing reference configuration instruction or/and special subframe, the
The sub-frame of uplink of two class descending sub frame correspondence TDD up-downgoing reference configuration instructions.
Such as, refering to shown in Fig. 4, it is assumed that TDD up-downgoing reference configuration is TDD uplink-downlink configuration 0, then FDD descending carrier
In, descending sub frame 0,1,5 and 6 is first kind descending sub frame, and descending sub frame 2,3,4,7,8,9 is Equations of The Second Kind descending sub frame.
Step 320: ACK/NACK information corresponding for first kind descending sub frame is referred to by terminal according to TDD up-downgoing reference configuration
The PDSCH HARQ feedback sequential relationship shown is fed back, and by ACK/ corresponding for descending sub frame m in Equations of The Second Kind descending sub frame
After subframe m+3 that TDD up-downgoing reference configuration indicates first meets on pre-conditioned sub-frame of uplink nack message
Feeding back, wherein, m is subframe number.
ACK/NACK information corresponding for first kind descending sub frame is indicated by what is called according to TDD up-downgoing reference configuration
PDSCH HARQ feedback sequential relationship is fed back, and i.e. refers to, the ACK/NACK information of first kind descending sub frame can be pressed by terminal
According to the PDSCH HARQ feedback sequential relationship that TDD up-downgoing reference configuration is corresponding in table 2, carry out in corresponding sub-frame of uplink
Feedback.
And for Equations of The Second Kind descending sub frame, terminal is by ACK/NACK corresponding for descending sub frame m in Equations of The Second Kind descending sub frame
After the sub-frame of uplink m+3 that TDD up-downgoing reference configuration indicates first meets on pre-conditioned sub-frame of uplink information
When feeding back, can use but be not limited to the one in following three kinds of methods or combination in any:
First method (hereinafter referred to as method 1): terminal by the ACK/NACK information corresponding to descending sub frame m on TDD
Feed back on first sub-frame of uplink after subframe m+3 of descending reference configuration instruction.
Such as, refering to shown in Fig. 5, when TDD up-downgoing reference configuration is TDD uplink-downlink configuration 0, in FDD carrier wave under
The ACK/NACK information of row subframe 2,3 correspondence, all after the descending sub frame 5 and special subframe 6 of TDD uplink-downlink configuration 0 instruction
Transmit on first sub-frame of uplink 7；The ACK/NACK information of descending sub frame 4 correspondence in FDD carrier wave, in TDD uplink-downlink configuration 0
Transmit on first sub-frame of uplink 8 after the sub-frame of uplink 7 of instruction；The ACK/NACK of descending sub frame 7,8 correspondence in FDD carrier wave
Information, first up son after descending sub frame 0 and special subframe 1 in the next radio frames of TDD uplink-downlink configuration 0 instruction
Transmit on frame 2；The ACK/NACK information of descending sub frame 9 correspondence in FDD carrier wave, at the next one of TDD uplink-downlink configuration 0 instruction
Radio frames is transmitted on first sub-frame of uplink 3 after sub-frame of uplink 2.
Second method (hereinafter referred to as method 2): terminal is by ACK/ corresponding for descending sub frame m in Equations of The Second Kind descending sub frame
Nack message is the sub-frame of uplink of first loading ACK/nack message after subframe m+3 that TDD up-downgoing reference configuration indicates
On feed back.
Refering to shown in Fig. 6, when TDD up-downgoing reference configuration is TDD uplink-downlink configuration 0, sub-frame of uplink 2,4,7,9 holds
It is loaded with ACK/NACK information to be feedback, and on sub-frame of uplink 3,8, does not carries ACK/NACK information to be feedback, then, FDD
The ACK/NACK information of descending sub frame 2,3 correspondence in carrier wave, all at descending sub frame 5 and the special son of TDD uplink-downlink configuration 0 instruction
Transmit on the sub-frame of uplink 7 of first loading ACK/nack message after frame 6；The ACK/ of descending sub frame 4 correspondence in FDD carrier wave
Nack message, the up son of first loading ACK/nack message after the sub-frame of uplink 7 of TDD uplink-downlink configuration 0 instruction
Transmit on frame 9；The ACK/NACK information of descending sub frame 7,8 correspondence in FDD carrier wave, all TDD uplink-downlink configuration 0 instruction next
Individual radio frames is transmitted on the sub-frame of uplink 2 of first loading ACK/nack message after descending sub frame 0 and special subframe 1；
The ACK/NACK information of descending sub frame 9 correspondence in FDD carrier wave, the after the sub-frame of uplink 3 of TDD uplink-downlink configuration 0 instruction
Transmit on the sub-frame of uplink 4 of one loading ACK/nack message.
The third method (hereinafter referred to as method 3): terminal is by ACK/ corresponding for descending sub frame m in Equations of The Second Kind descending sub frame
Nack message is the up son of first non-loading ACK/nack message after subframe m+3 that TDD up-downgoing reference configuration indicates
Feed back on frame.
Refering to shown in Fig. 7, when TDD up-downgoing reference configuration is TDD uplink-downlink configuration 0, sub-frame of uplink 2,4,7,9 holds
It is loaded with ACK/NACK information to be feedback, and on sub-frame of uplink 3,8, does not carries ACK/NACK information to be feedback, then, FDD
The ACK/NACK information of descending sub frame 2,3,4 correspondence in carrier wave, all at the descending sub frame 5, special of TDD uplink-downlink configuration 0 instruction
Transmit on the sub-frame of uplink 8 of first non-loading ACK/nack message after subframe 6 and sub-frame of uplink 7；In FDD carrier wave descending
The ACK/NACK information of subframe 7,8,9 correspondence, all TDD uplink-downlink configuration 0 instruction next radio frames in descending sub frame 0,
Transmit on the sub-frame of uplink 3 of first non-loading ACK/nack message after special subframe 1 and sub-frame of uplink 2.
In TDD carrier wave, the one in above-mentioned three kinds of methods or combination in any is used to determine transmission first kind descending sub frame
After the sub-frame of uplink of the ACK/NACK information the most corresponding with Equations of The Second Kind descending sub frame, before feeding back ACK/nack message, relatively
Good, terminal can be not limited to the position of the following two mode sub-frame of uplink to determining be adjusted to use, so that system
Middle resource distribution more equilibrium:
The first adjusts mode and is (hereinafter referred to as method 4): in fixed sub-frame of uplink, if there is sub-frame of uplink n'
With sub-frame of uplink n " (n'＜ n "), descending sub frame quantity N on the most corresponding FDD carrier waveDL' and NDL", and | NDL'-NDL" | >=2,
And max (NDL',NDL") corresponding descending sub frame comprises Equations of The Second Kind descending sub frame, the then portion to this Equations of The Second Kind descending sub frame
Point or sub-frame of uplink that all descending sub frame is corresponding carry out equilibrium and adjust；As, make NDL' and NDL" difference level off to 0.
It is also preferred that the left above-mentioned adjustment is also it suffices that following condition 1, or, meet condition 1 and condition 2.
Condition 1: the difference of different descending sub frame quantity corresponding to sub-frame of uplink in reduction system, i.e. ensures each up son
The ACK/NACK information carried in frame as far as possible equilibrium, but time between the corresponding sub-frame of uplink of arbitrary FDD descending sub frame
Interval is not less than the processing delay of systemic presupposition, and e.g., LTE system predetermined processing time delay is 4ms；
Such as, refering to shown in Fig. 8, after using method 3, the ACK/NACK of descending sub frame 1 correspondence in first kind descending sub frame
Information is fed back on sub-frame of uplink 7, and in Equations of The Second Kind descending sub frame, the ACK/NACK information of descending sub frame 2,3,4 correspondence is at up son
Feed back on frame 9, sub-frame of uplink 7 and each self-corresponding descending sub frame quantity | 1-3 |=2 of sub-frame of uplink 9, then can be at descending sub frame
Time interval between 2 with sub-frame of uplink 7 not less than systemic presupposition processing delay on the premise of by corresponding for descending sub frame 2
ACK/NACK information adjusts to sub-frame of uplink 7 to be fed back.
Condition 2: further, after using condition 1 to be adjusted, in order to avoid sequential relationship knock-on becomes, is having determined that
First kind descending sub frame and Equations of The Second Kind descending sub frame in, if there is adjacent descending sub frame m' and descending sub frame m " (m " ＞
M'), and its respectively corresponding sub-frame of uplink n' and sub-frame of uplink n " meet n " ＜ n'；Then to descending sub frame m' and descending sub frame m "
In sub-frame of uplink corresponding to the Equations of The Second Kind subframe that comprises be adjusted；, the descending sub frame m' after order adjustment and descending sub frame m " and institute
Corresponding sub-frame of uplinkAnd sub-frame of uplinkMeetAndTo avoid sequential to close
System's knock-on becomes.
Such as, refering to shown in Fig. 9: after using method 4 condition 1, descending sub frame 1,5,6 correspondence in first kind descending sub frame
ACK/NACK information is transmitted on sub-frame of uplink 2, and in first kind descending sub frame, the ACK/NACK information of descending sub frame 7,8 correspondence exists
Transmitting on sub-frame of uplink 3, in Equations of The Second Kind descending sub frame, the ACK/NACK information of descending sub frame 4 correspondence is transmitted on sub-frame of uplink 2,
In Equations of The Second Kind descending sub frame, the ACK/NACK information of descending sub frame 2,3 correspondence is transmitted on sub-frame of uplink 3, then in order to avoid occurring
Sequential relationship knock-on becomes, it is also preferred that the left the ACK/NACK information of descending sub frame 2,3 correspondence is adjusted to sub-frame of uplink 2 transmission.
It is (hereinafter referred to as method 5 is also individually using of above-mentioned condition 2) that the second adjusts mode: fixed the
In one class descending sub frame and Equations of The Second Kind descending sub frame, if there is adjacent descending sub frame m' and descending sub frame m " (m " ＞ m'), and
Its most corresponding sub-frame of uplink n' and sub-frame of uplink n " meet n " ＜ n'；Then to descending sub frame m' and descending sub frame m " in comprise
Sub-frame of uplink corresponding to Equations of The Second Kind subframe be adjusted, to avoid sequential relationship knock-on to become.
Such as: refering to shown in Figure 10: after using method 1, the ACK/NACK of descending sub frame 0 correspondence in first kind descending sub frame
Information is transmitted on sub-frame of uplink 7, and in first kind descending sub frame, the ACK/NACK information of descending sub frame 1 correspondence is at sub-frame of uplink 8
Upper transmission, in first kind descending sub frame, the ACK/NACK information of descending sub frame 9 correspondence is transmitted on sub-frame of uplink 4, under Equations of The Second Kind
In row subframe, the ACK/NACK information of descending sub frame 2,3 correspondence is transmitted on sub-frame of uplink 7, descending son in Equations of The Second Kind descending sub frame
The ACK/NACK information of frame 4 correspondence is transmitted on sub-frame of uplink 8, the ACK/ of descending sub frame 7,8 correspondence in Equations of The Second Kind descending sub frame
Nack message transmits on sub-frame of uplink 2, then in order to avoid occurring sequential relationship knock-on to become, it is also preferred that the left by right for descending sub frame 2,3
The ACK/NACK information answered adjusts to sub-frame of uplink 7 transmission.
The ACK/NACK bit number that same sub-frame of uplink is carriedIts
Middle Nsubframe,cFor on carrier wave c in this sub-frame of uplink the descending sub frame number of feeding back ACK/nack message.
Use concrete application scenarios that above-mentioned flow process is described in detail below.
For sub-frame of uplink angle, terminal by ACK/NACK information corresponding for first kind descending sub frame according on TDD
The PDSCH HARQ feedback sequential relationship of descending reference configuration instruction is fed back, and by son descending in Equations of The Second Kind descending sub frame
After subframe m+3 that TDD up-downgoing reference configuration indicates first of ACK/NACK information corresponding for frame m meets pre-conditioned
Sub-frame of uplink on feed back, it is also possible to be described as: terminal is anti-in the sub-frame of uplink n that TDD up-downgoing reference configuration indicates
The ACK/NACK information corresponding to descending sub frame n-k in feedback FDD carrier wave, k ∈ K, wherein,
1) if TDD up-downgoing reference configuration corresponding to FDD carrier wave is TDD uplink-downlink configuration 0.
Employing method 1, then n=2,7 time, K={6,5,4}, n=3,8,4,9 time, K={4}；Referring particularly to shown in Figure 11.
Employing method 2, then n=2,7 time, K={6,5,4}, n=3,8 time, K is null set, n=4,9 time, 5,4}, tool
Body is as shown in figure 12.
Employing method 3, then n=2,7 time, K={6}, n=3,8 time, K={6,5,4}, n=4,9 time, K={4}, specifically
As shown in figure 13.
Employing method 4 condition 1 or/and method 4 condition 1+ condition 2, then n=2,7 time, K={6,5}, n=3,8 time, K=
5,4}, the most as shown in figure 14.
Or；
2) if TDD up-downgoing reference configuration corresponding to FDD carrier wave is TDD uplink-downlink configuration 1.
Employing method 1 or/and method 2, then n=2,7 time, K={7,6,5,4}, n=3,8 time, K={4}, concrete such as figure
Shown in 15.
Employing method 4 condition 1 or/and method 4 condition 1+ condition 2, then n=2,7 time, K={7,6,5}, n=3,8 time, K
=5,4}, the most as shown in figure 16.
Or,
3) if TDD up-downgoing reference configuration corresponding to FDD carrier wave is TDD uplink-downlink configuration 2.
Employing method 1 or/and method 2, then n=2,7 time, K={8,7,6,5}, the most as shown in figure 17.
Or,
4) if TDD up-downgoing reference configuration corresponding to FDD carrier wave is TDD uplink-downlink configuration 3.
One in employing method 1, method 2 and method 4 condition 1+ condition 2 or combination in any, then during n=2, K={11,
When 10,9,8,7,6,5}, n=3, when K={6,5}, n=4, K={5,4}, the most as shown in figure 18.
Employing method 4 condition 1, then during n=2, K={11, when 8,7,6}, n=3, K={11, when 10,6,5}, n=4, K
=5,4}, the most as shown in figure 19.
Or,
5) if TDD up-downgoing reference configuration corresponding to FDD carrier wave is TDD uplink-downlink configuration 4.
Employing method 1 is or/and method 2, then during n=2, and K={12, when 11,10,9,8,7}, n=3, K={7,6,5,4},
The most as shown in figure 20.
Or,
6) if TDD up-downgoing reference configuration corresponding to FDD carrier wave is TDD uplink-downlink configuration 5.
Employing method 1 is or/and method 2, then during n=2, and K={13,12,11,10,9,8,7,6,5,4}, concrete such as Figure 21
Shown in.
Or,
7) if TDD up-downgoing reference configuration corresponding to FDD carrier wave is TDD uplink-downlink configuration 6.
Employing method 1 or/and method 2, then n=2,7 time, K={7, when 5,4}, n=3, K={7, when 6,5}, n=4, K
=when 5}, n=8, and K={7,6,5,4}, the most as shown in figure 22.
Employing method 4 condition 1 is or/and method 4 condition 1+ condition 2, then during n=2, when K={8,7}, n=3, and K={7,
When 6}, n=4, when K={6,5}, n=7, when K={7}, n=8, K={7,6,5}, the most as shown in figure 23.
Employing method 5, then n=2,7 time, when K={7}, n=3, K={7, when 6,5}, n=4, when K={5}, n=8, K
=7,6,5,4}, the most as shown in figure 24.
Wherein, each order of elements in set K can change, and n-k < processing mode when 0 sees table 2 associated description,
This repeats no more.
Accordingly, in the embodiment of the present invention, base station is also required to receive the ACK/NACK of terminal feedback according to corresponding mode
Information, the most as shown in figure 25.
Step 2500: base station determines the TDD that end side is used when carrying out PDSCH HARQ feedback for FDD descending carrier
Up-downgoing reference configuration.
In the embodiment of the present invention, TDD uplink-downlink configuration actually used on TDD carrier wave can be defined as on TDD by base station
Descending reference configures, and can the TDD uplink-downlink configuration that arrange for PDSCH HARQ feedback on TDD carrier wave be defined as on TDD
Descending reference configures；The TDD uplink-downlink configuration that high-level signaling notifies can also be defined as TDD up-downgoing reference configuration,
Wherein, all sub-frame of uplink that the TDD uplink-downlink configuration of high-level signaling notice comprises are all up son comprised on main carrier
The subset of frame；Confirm according to predetermined manner TDD uplink-downlink configuration can also be defined as TDD up-downgoing reference configuration,
Such as: being always due up TDD up-downgoing reference configuration is TDD uplink-downlink configuration 5；Or, join when using 5ms switching point on TDD carrier wave
When putting, agreement TDD up-downgoing reference configuration is TDD uplink-downlink configuration 2；When using the configuration of 10ms switching point on TDD carrier wave, about
Determine TDD up-downgoing reference configuration be reference configuration be TDD uplink-downlink configuration 5.
Step 2510: all descending sub frames that FDD descending carrier is comprised by base station according to TDD up-downgoing reference configuration are divided into
Two classes, the descending sub frame of first kind descending sub frame corresponding described TDD up-downgoing reference configuration instruction or/and special subframe, second
The sub-frame of uplink of class descending sub frame corresponding described TDD up-downgoing reference configuration instruction.
Step 2520: the PDSCH HARQ feedback sequential relationship that base station indicates according to TDD up-downgoing reference configuration receives the
The ACK/NACK information that one class descending sub frame is corresponding, and first after subframe m+3 of TDD up-downgoing reference configuration instruction
Individual meet the ACK/NACK information corresponding for descending sub frame m in Equations of The Second Kind descending sub frame that receives on pre-conditioned sub-frame of uplink, its
In, m is subframe number.
After subframe m+3 that TDD up-downgoing reference configuration indicates first of base station meets pre-conditioned up son
When receiving ACK/NACK information corresponding for descending sub frame m in Equations of The Second Kind descending sub frame on frame, can use but be not limited to following three
One in the method for kind or combination in any:
First kind of way is: connect on first sub-frame of uplink after subframe m+3 of TDD up-downgoing reference configuration instruction
Receive ACK/NACK information corresponding to descending sub frame m；
The second way is: first loading ACK/NACK after subframe m+3 of TDD up-downgoing reference configuration instruction
ACK/NACK information corresponding to descending sub frame m is received on the sub-frame of uplink of information；
The third mode is: first non-loading ACK after subframe m+3 of TDD up-downgoing reference configuration instruction/
ACK/NACK information corresponding to descending sub frame m is received on the sub-frame of uplink of NACK.
On the other hand, base station determines that the ACK/NACK information that carrying first kind descending sub frame is corresponding is descending with carrying Equations of The Second Kind
After the sub-frame of uplink of the ACK/NACK information that subframe is corresponding, before receiving corresponding ACK/NACK information, perform following operation；
In fixed sub-frame of uplink, if there is sub-frame of uplink n and sub-frame of uplink n', n ＜ n', the most corresponding FDD carry
Descending sub frame quantity N on rippleDLAnd NDL', and | NDL-NDL' | >=2, and max (NDL,NDL') corresponding descending sub frame comprises
Equations of The Second Kind descending sub frame, then the sub-frame of uplink that the part or all of descending sub frame of this Equations of The Second Kind descending sub frame is corresponding is carried out by base station
Equilibrium adjusts；Wherein, corresponding up of any one descending sub frame in first kind sub-frame of uplink and Equations of The Second Kind sub-frame of uplink
Time interval between subframe is not less than the processing delay of default.
Or/and
In fixed first kind descending sub frame and Equations of The Second Kind descending sub frame, if there is adjacent descending sub frame m' and descending
Subframe m ", m " ＞ m', and its most corresponding sub-frame of uplink n' and sub-frame of uplink n " meet n " ＜ n'；Then base station to descending sub frame m' and
Descending sub frame m " in sub-frame of uplink corresponding to the Equations of The Second Kind descending sub frame that comprises be adjusted, order adjust after descending sub frame m' and
Descending sub frame m " corresponding to sub-frame of uplinkAnd sub-frame of uplinkMeetAnd
To avoid sequential relationship knock-on to become.
Further, the PDSCH HARQ feedback sequential relationship that base station indicates according to TDD up-downgoing reference configuration receives the
The ACK/NACK information that one class descending sub frame is corresponding, and first after subframe m+3 of TDD up-downgoing reference configuration instruction
The individual ACK/NACK information corresponding for descending sub frame m in Equations of The Second Kind descending sub frame that receives on pre-conditioned sub-frame of uplink that meets, also
Can be described as: on the sub-frame of uplink n of TDD up-downgoing reference configuration instruction, receive the descending ACK/NACK corresponding for sub-n-k of FDD
Information, k ∈ K, wherein,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 0, then n=2,7 time, K={6,5,4}, n=3,8,
4,9 time, K={4}；Or, n=2,7 time, K={6,5,4}, n=3,8 time, K is null set, n=4,9 time, K={5,4}；Or
Person, n=2,7 time, K={6}, n=3,8 time, K={6,5,4}, n=4,9 time, K={4}；Or, n=2,7 time, K={6,
5}, n=3,8 time, K={5,4}, n=4,9 time, K={4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 1, then n=2,7 time, K={7,6,5,4}, n=3,
When 8, K={4}；Or, n=2,7 time, K={6,5}, n=3,8 time, K={5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 2, then n=2,7 time, K={8,7,6,5}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 3, then during n=2, K={11,10,9,8,7,6,
When 5}, n=3, when K={6,5}, n=4, K={5,4}；Or, during n=2, K={11, when 8,7,6}, n=3, K={11,
When 10,6,5}, n=4, K={5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 4, then during n=2, K={12,11,10,9,8,7},
During n=3, K={7,6,5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 5, then during n=2, K={13,12,11,10,9,8,
7,6,5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 6, then n=2,7 time, K={7, when 5,4}, n=3,
K={7, when 6,5}, n=4, when K={5}, n=8, K={7,6,5,4}；Or, during n=2, when K={8,7}, n=3, K=
When 7,6}, n=4, when K={6,5}, n=7, when K={7}, n=8, and K={7,6,5}；Or, then n=2,7 time, K={7},
During n=3, K={7, when 6,5}, n=4, when K={5}, n=8, K={7,6,5,4}.
The concrete executive mode of above-mentioned steps 2500-step 2520 is identical with end side, being correlated with referring in particular to end side
Describe, do not repeat them here.
Based on above-described embodiment, refering to shown in Figure 26 and Figure 27, in the embodiment of the present invention,
Base station includes determining unit 260, processing unit 261 and communication unit 262, wherein,
Determine unit 260, the TDD used in time determining and carry out PDSCH HARQ feedback for FDD descending carrier
Descending reference configures；
Processing unit 261, all descending for FDD descending carrier is comprised according to described TDD up-downgoing reference configuration
Subframe is divided into two classes, the descending sub frame of first kind descending sub frame correspondence TDD up-downgoing reference configuration instruction or/and special subframe,
The sub-frame of uplink of Equations of The Second Kind descending sub frame correspondence TDD up-downgoing reference configuration instruction；
Communication unit 262, for joining ACK/NACK information corresponding for first kind descending sub frame according to TDD up-downgoing reference
The PDSCH HARQ feedback sequential relationship putting instruction is fed back, and by corresponding for descending sub frame m in Equations of The Second Kind descending sub frame
After subframe m+3 that TDD up-downgoing reference configuration indicates first of ACK/NACK information meets pre-conditioned up son
Feed back on frame.
Terminal includes determining unit 270, control unit 271 and communication unit 272, wherein,
Determine unit 270, for determining what end side was used when carrying out PDSCH HARQ feedback for FDD descending carrier
TDD up-downgoing reference configuration；
Control unit 271, for all descending sub frames comprised by FDD descending carrier according to TDD up-downgoing reference configuration
Be divided into two classes, the descending sub frame of first kind descending sub frame correspondence TDD up-downgoing reference configuration instruction or/and special subframe, second
The sub-frame of uplink of class descending sub frame correspondence TDD up-downgoing reference configuration instruction；
Communication unit 272, for receiving according to the PDSCH HARQ feedback sequential relationship of TDD up-downgoing reference configuration instruction
The ACK/NACK information that described first kind descending sub frame is corresponding, and after subframe m+3 of TDD up-downgoing reference configuration instruction
First meet and on pre-conditioned sub-frame of uplink, receive ACK/ corresponding for descending sub frame m in described Equations of The Second Kind descending sub frame
Nack message.
Above-described embodiment only illustrates as a example by the TDD carrier wave application scenarios as main carrier.In actual application, the present invention
The technical scheme that embodiment provides is applied equally to the application scenarios that FDD carrier wave is main carrier, and be applicable to system only
There is the application scenarios of FDD carrier wave, in FDD up-link carrier, i.e. limit only part sub-frame of uplink can be used for transmitting ACK/NACK letter
Breath, does not repeats them here.
In sum, in the embodiment of the present invention, under the TDD carrier wave application scenarios with FDD DL carrier aggregation, again set
Count a kind of PDSCH HARQ feedback scheme, particularly as follows: terminal carries out PDSCH HARQ according to determine for FDD descending carrier
The TDD up-downgoing reference configuration used during feedback, all descending sub frames comprised by FDD descending carrier are divided into two classes, and first
The descending sub frame of class descending sub frame correspondence TDD up-downgoing reference configuration instruction is or/and special subframe, and Equations of The Second Kind descending sub frame is corresponding
The sub-frame of uplink of TDD up-downgoing reference configuration instruction, and by ACK/NACK information corresponding for first kind descending sub frame according to TDD
The PDSCH HARQ feedback sequential relationship of up-downgoing reference configuration instruction is fed back, and by descending in Equations of The Second Kind descending sub frame
After subframe m+3 that TDD up-downgoing reference configuration indicates first of ACK/NACK information corresponding to subframe m meets default bar
Feeding back on the sub-frame of uplink of part, accordingly, base station also receives the ACK/NACK information of end side feedback according to same way.
So, terminal accurately and in time to the ACK/NACK information that base station feedback downlink data is corresponding, thus can make the base station can root
Carry out data accurately according to the ACK/NACK information obtained to retransmit, and then systematic function has been effectively ensured.
Obviously, those skilled in the art can carry out various change and the modification essence without deviating from the present invention to the present invention
God and scope.So, if these amendments of the present invention and modification belong to the scope of the claims in the present invention and equivalent technologies thereof
Within, then the present invention is also intended to comprise these change and modification.
Claims (4)
1. the implementation method of a hybrid automatic repeat-request HARQ feedback, it is characterised in that including:
The sub-frame of uplink n of TDD up-downgoing reference configuration instruction feeds back for FDD descending sub frame n-
K, corresponding correct/error ACK/NACK information, k ∈ K, wherein,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 0, then n=2,7 time, K={6,5}, n=3,8 time, K=
5,4}, n=4,9 time, K={4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 1, then n=2,7 time, K={7,6}, n=3,8 time, K=
{6,5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 2, then n=2,7 time, K={8,7,6,5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 3, then during n=2, K={11,10,9,8,7,6}, n=3
Time, when K={6,5}, n=4, K={5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 4, then during n=2, K={12,11,10,9,8,7}, n=3
Time, K={7,6,5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 5, then during n=2, K={13,12,11,10,9,8,7,6,
5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 6, then during n=2, when K={8,7}, n=3, K={7,
When 6}, n=4, when K={6,5}, n=7, when K={7}, n=8, K={7,6,5}.
2. the implementation method of a hybrid automatic repeat-request HARQ feedback, it is characterised in that including:
The sub-frame of uplink n of TDD up-downgoing reference configuration instruction receives FDD descending sub frame n-k pair
The correct/error ACK/NACK information answered, k ∈ K, wherein,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 0, then n=2,7 time, K={6,5}, n=3,8 time, K=
5,4}, n=4,9 time, K={4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 1, then n=2,7 time, K={7,6}, n=3,8 time, K=
{6,5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 2, then n=2,7 time, K={8,7,6,5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 3, then during n=2, K={11,10,9,8,7,6}, n=3
Time, when K={6,5}, n=4, K={5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 4, then during n=2, K={12,11,10,9,8,7}, n=3
Time, K={7,6,5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 5, then during n=2, K={13,12,11,10,9,8,7,6,
5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 6, then during n=2, when K={8,7}, n=3, K={7,
When 6}, n=4, when K={6,5}, n=7, when K={7}, n=8, K={7,6,5}.
3. a hybrid automatic repeat-request HARQ feedback realize device, it is characterised in that including:
Communication unit, feeds back FDD on the sub-frame of uplink n in the instruction of TDD up-downgoing reference configuration
Correct/error ACK/NACK information corresponding for descending sub frame n-k, k ∈ K, wherein,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 0, then n=2,7 time, K={6,5}, n=3,8 time, K=
5,4}, n=4,9 time, K={4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 1, then n=2,7 time, K={7,6}, n=3,8 time, K=
{6,5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 2, then n=2,7 time, K={8,7,6,5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 3, then during n=2, K={11,10,9,8,7,6}, n=3
Time, when K={6,5}, n=4, K={5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 4, then during n=2, K={12,11,10,9,8,7}, n=3
Time, K={7,6,5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 5, then during n=2, K={13,12,11,10,9,8,7,6,
5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 6, then during n=2, when K={8,7}, n=3, K={7,
When 6}, n=4, when K={6,5}, n=7, when K={7}, n=8, K={7,6,5}.
4. a hybrid automatic repeat-request HARQ feedback realize device, it is characterised in that including:
Communication unit, receives FDD on the sub-frame of uplink n in the instruction of TDD up-downgoing reference configuration
Correct/error ACK/NACK information corresponding for descending sub frame n-k, k ∈ K, wherein,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 0, then n=2,7 time, K={6,5}, n=3,8 time, K=
5,4}, n=4,9 time, K={4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 1, then n=2,7 time, K={7,6}, n=3,8 time, K=
{6,5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 2, then n=2,7 time, K={8,7,6,5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 3, then during n=2, K={11,10,9,8,7,6}, n=3
Time, when K={6,5}, n=4, K={5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 4, then during n=2, K={12,11,10,9,8,7}, n=3
Time, K={7,6,5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 5, then during n=2, K={13,12,11,10,9,8,7,6,
5,4}；
Or,
If described TDD up-downgoing reference configuration is TDD uplink-downlink configuration 6, then during n=2, when K={8,7}, n=3, K={7,
When 6}, n=4, when K={6,5}, n=7, when K={7}, n=8, K={7,6,5}.
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