Summary of the invention
Purpose of the present invention is intended to solve at least one of above-mentioned technological deficiency, particularly solves the problem that persistent scheduling resource release is confirmed in the mobile communication.
One aspect of the present invention has proposed a kind of confirming scheduling resource release method, may further comprise the steps: user equipment (UE) receives the release command of the persistent scheduling resource of base station transmission, and wherein said release command comprises the indication information of described release command; Described UE is according to described release command and indication information, and when described UE correctly receives described release command, described UE sends feedback information to described base station.
According to embodiments of the invention, described release command comprises the release command of the persistent scheduling resource of uplink and downlink, described indication information comprises that persistent scheduling resource discharges DCI (the DownlinkControl Information of channel, Downlink Control Information) a bit or an information field in, be used to indicate the release signaling that whether has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously, described UE goes up described feedback information to described base station at PUCCH (Physical Downlink Share Channel, Physical Downlink Shared Channel) and sends.
According to embodiments of the invention, when described indication information is indicated the release signaling that has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously, under the FDD communication mode, described UE carries out feedback information with the feedback information following table mode of uplink and downlink release signaling and merges, send to described base station with the BPSK modulation system
Descending release command |
Up release command |
Feedback information merges |
ACK |
ACK |
ACK |
ACK |
- |
DTX |
- |
ACK |
DTX |
- |
- |
DTX |
Wherein, described UE correctly receives release command and is designated as ACK, and DTX represents not send, and the described UE of "-" expression does not detect the persistent scheduling resource release signaling that the base station end sends.
According to embodiments of the invention, when described indication information is indicated the release signaling that has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously, under the FDD communication mode, described UE modulates mapping with the feedback information following table mode of uplink and downlink release signaling, send to described base station with the QPSK modulation system
Descending release command |
Up release command |
The QPSK symbol |
ACK |
ACK |
11 |
ACK |
- |
10 |
- |
ACK |
01 |
- |
- |
00 |
Wherein, described UE correctly receives release command and is designated as ACK, and the described UE of "-" expression does not detect the persistent scheduling resource release signaling that the base station end sends.
According to embodiments of the invention, when described indication information is indicated the release signaling that has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously, under the TDD communication mode, described UE carries out feedback information with the feedback information following table mode of uplink and downlink release signaling and merges, use the transmission means that ACK/NACK merges among the LTE to send to described base station with the BPSK modulation system
Descending release command |
Up release command |
Feedback information merges |
ACK |
ACK |
ACK |
ACK |
- |
DTX |
Wherein, described UE correctly receives release command and is designated as ACK, and DTX represents not send, and the described UE of "-" expression does not detect the persistent scheduling resource release signaling that the base station end sends.
According to embodiments of the invention, when described indication information is indicated the release signaling that has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously, under the TDD communication mode,
Described UE carries out feedback information with the feedback information following table mode of uplink and downlink release signaling and merges, the form that the ACK/NACK of the QPSK modulation of dicode word merges among the use LTE, the ACK/NACK information of the result after merging and a code word in the dicode word is merged to the transmission of described base station
Descending release command |
Up release command |
Feedback information merges |
ACK |
ACK |
ACK |
ACK |
- |
DTX |
- |
ACK |
DTX |
- |
- |
DTX |
Wherein, described UE correctly receives release command and is designated as ACK, and DTX represents not send, and the described UE of "-" expression does not detect the persistent scheduling resource release signaling that the base station end sends, perhaps
Described UE modulates mapping with the feedback information following table mode of uplink and downlink release signaling, the form that the ACK/NACK of the QPSK modulation of dicode word merges among the use LTE, with the dibit information that obtains respectively with the dicode word in the ACK/NACK information of a code word merge, result after merging is sent to described base station
Descending release command |
Up release command |
The QPSK symbol |
ACK |
ACK |
11 |
ACK |
- |
10 |
- |
ACK |
01 |
- |
- |
00 |
Wherein, described UE correctly receives release command and is designated as ACK, and the described UE of "-" expression does not detect the persistent scheduling resource release signaling that the base station end sends.
According to embodiments of the invention, when described indication information is indicated the release signaling that has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously, under the TDD communication mode, described UE carries out feedback information with the feedback information following table mode of uplink and downlink release signaling and merges, use the multiplexing transmission means of ACK/NACK of the QPSK modulation among the LTE to send to described base station
Descending release command |
Up release command |
Feedback information merges |
ACK |
ACK |
ACK |
ACK |
- |
DTX |
- |
ACK |
DTX |
- |
- |
DTX |
Wherein, described UE correctly receives release command and is designated as ACK, and DTX represents not send, and the described UE of "-" expression does not detect the persistent scheduling resource release signaling that the base station end sends.
According to embodiments of the invention, when described indication information is indicated the release signaling that only has the persistent scheduling resource of upstream or downstream in the current subframe, under the FDD communication mode, initial CCE (Control Channel Element, control channel unit) the numbering n that described UE discharges according to the persistent scheduling resource in the current subframe
CCEObtain the channel number n of corresponding PUCCH
AN, with the feedback information of upstream or downstream release signaling at channel number n
ANOn send to described base station.
According to embodiments of the invention, when described indication information is indicated the release signaling that only has the persistent scheduling resource of upstream or downstream in the current subframe, under the TDD communication mode,
The form that the ACK/NACK of described UE by BPSK modulation merges sends to described base station with the feedback information of upstream or downstream release signaling at PUCCH, perhaps
Described UE merges or multiplexing form by the ACK/NACK of QPSK modulation, the feedback information of upstream or downstream release signaling is sent to described base station at PUCCH, wherein when merging the form transmission, the feedback information of upstream or downstream release signaling and a code word merge.
The present invention has also proposed a kind of confirming scheduling resource release method on the other hand, may further comprise the steps:
The base station is to the release command of UE transmission persistent scheduling resource, and wherein said release command comprises the indication information of described release command, and described indication information is indicated the release signaling that whether has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously; The capable physically control channel PUCCH in described base station goes up the affirmation information of the described persistent scheduling resource release that receives described UE transmission.
According to embodiments of the invention, described release command comprises the release command of the persistent scheduling resource of uplink and downlink.
According to embodiments of the invention, described indication information comprises that persistent scheduling resource discharges a bit or the information field among the Downlink Control Information DCI of channel, is used to indicate the release signaling that whether has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously.
The present invention has also proposed a kind of confirming scheduling resource release method on the other hand, may further comprise the steps:
The release command of the persistent scheduling resource that the base station sends in a descending sub frame to UE, wherein said release command comprises the indication information of described release command; The capable physically control channel PUCCH in described base station goes up the affirmation information of the described persistent scheduling resource release that receives described UE transmission.
According to embodiments of the invention, the release command of described persistent scheduling resource is the release signaling of up persistent scheduling resource or the release signaling of downlink continuous scheduling resource, the scheduling of the release command of described persistent scheduling resource or Physical Downlink Shared Channel PDSCH indication sends in described descending sub frame, and described UE feed back the affirmation information that the scheduling of the release command of described persistent scheduling resource or Physical Downlink Shared Channel PDSCH is indicated in a sub-frame of uplink.
According to embodiments of the invention, under the TDD communication mode, described UE merges or multiplexing form by ACK/NACK, the feedback information of upstream or downstream release signaling is sent to described base station at PUCCH, wherein, when the form that merges by ACK/NACK sends, the number of described indication information indication descending allocation index DAI in same up feedback window, when sending by the multiplexing form of ACK/NACK, the down data subframes number K of ACK/NACK feedback is carried out in described indication information indication in same up feedback window
PDSCHNumber K with the resource release signaling
SPS-refeaseSum is not more than 4.
The present invention has also proposed a kind of UE on the other hand, comprising: receiver module, described receiver module are used for the release command of the persistent scheduling resource of reception base station transmission, and wherein said release command comprises the indication information of described release command; Feedback module, described feedback module are used to indicate whether send feedback information and feedack content to described base station; Sending module, described sending module are used for sending feedback information to described base station.
According to embodiments of the invention, described UE also comprises parsing module, described parsing module is used for resolving the indication information of described release command, wherein, described indication information is that persistent scheduling resource discharges a bit or the information field among the Downlink Control Information DCI of channel, is used to indicate the release signaling that whether has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously.
According to embodiments of the invention, described feedback module comprises judge module, and described judge module is used for judging that current system is in FDD communication mode or TDD communication mode.
According to embodiments of the invention, judge current system when described judge module and be in the FDD communication mode, and the described parsing module indication information of resolving described release command is when having the release signaling of persistent scheduling resource of uplink and downlink in the current subframe simultaneously,
Described feedback module carries out feedback information with the feedback information following table mode of uplink and downlink release signaling and merges, and described sending module sends to described base station with the BPSK modulation system,
Descending release command |
Up release command |
Feedback information merges |
ACK |
ACK |
ACK |
ACK |
- |
DTX |
- |
ACK |
DTX |
- |
- |
DTX |
Wherein, described receiver module correctly receives release command and is designated as ACK, and DTX represents not send, and the described receiver module of "-" expression does not detect the persistent scheduling resource release signaling that the base station end sends, perhaps
Described feedback module is modulated mapping with the feedback information following table mode of uplink and downlink release signaling, and described sending module sends to described base station with the QPSK modulation system,
Descending release command |
Up release command |
The QPSK symbol |
ACK |
ACK |
11 |
ACK |
- |
10 |
- |
ACK |
01 |
- |
- |
00 |
Wherein, described receiver module correctly receives release command and is designated as ACK, and the described receiver module of "-" expression does not detect the persistent scheduling resource release signaling that the base station end sends.
According to embodiments of the invention, judge current system when described judge module and be in the TDD communication mode, and the described parsing module indication information of resolving described release command is when having the release signaling of persistent scheduling resource of uplink and downlink in the current subframe simultaneously,
Described feedback module carries out feedback information with the feedback information following table mode of uplink and downlink release signaling and merges, and described sending module uses the transmission means that ACK/NACK merges among the LTE to send to described base station with the BPSK modulation system,
Descending release command |
Up release command |
Feedback information merges |
ACK |
ACK |
ACK |
ACK |
- |
DTX |
Wherein, described receiver module correctly receives release command and is designated as ACK, and DTX represents not send, and the described receiver module of "-" expression does not detect the persistent scheduling resource release signaling that the base station end sends, perhaps
Described feedback module carries out feedback information with the feedback information following table mode of uplink and downlink release signaling and merges, the form that the ACK/NACK of the QPSK modulation of dicode word merges among the use LTE, result after described sending module will merge and the ACK/NACK information of a code word in the dicode word merge to the transmission of described base station
Descending release command |
Up release command |
Feedback information merges |
ACK |
ACK |
ACK |
ACK |
- |
DTX |
- |
ACK |
DTX |
- |
- |
DTX |
Wherein, described receiver module correctly receives release command and is designated as ACK, and DTX represents not send, and the described receiver module of "-" expression does not detect the persistent scheduling resource release signaling that the base station end sends, perhaps
Described feedback module is modulated mapping with the feedback information following table mode of uplink and downlink release signaling, the form that the ACK/NACK of the QPSK modulation of dicode word merges among the use LTE, with the dibit information that obtains respectively with the dicode word in the ACK/NACK information of a code word merge, result after described sending module will merge sends to described base station
Descending release command |
Up release command |
The QPSK symbol |
ACK |
ACK |
11 |
ACK |
- |
10 |
- |
ACK |
01 |
- |
- |
00 |
Wherein, described receiver module correctly receives release command and is designated as ACK, and the described receiver module of "-" expression does not detect the persistent scheduling resource release signaling that the base station end sends, perhaps
Described feedback module carries out feedback information with the feedback information following table mode of uplink and downlink release signaling and merges, and described sending module uses the multiplexing transmission means of ACK/NACK of the QPSK modulation among the LTE to send to described base station,
Descending release command |
Up release command |
Feedback information merges |
ACK |
ACK |
ACK |
ACK |
- |
DTX |
- |
ACK |
DTX |
- |
- |
DTX |
Wherein, described receiver module correctly receives release command and is designated as ACK, and DTX represents not send, and the described receiver module of "-" expression does not detect the persistent scheduling resource release signaling that the base station end sends.
The technique scheme that proposes according to the present invention, UE can release command be recognized feedback to resource by up channel.The technical scheme that the present invention proposes takes full advantage of the message field that existing system defines, and realization is simple, efficient, is conducive to improve the compatibility of system.
The aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein identical or similar label is represented identical or similar elements or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
The present invention proposes a kind of confirming scheduling resource release method, may further comprise the steps: user equipment (UE) receives the release command of the persistent scheduling resource of base station transmission, and wherein said release command comprises the indication information of described release command; Described UE is according to described release command and indication information, and when described UE correctly receives described release command, described UE sends feedback information to described base station.
For the ease of understanding the technical scheme that the present invention proposes, be necessary to introduce the feedback mechanism of acknowledge message in the LTE system.
In the LTE system, when having opened the HARQ function in the downlink transfer, UE is after having finished demodulation to the data on the descending sub frame n ', decoding, to whether need the signaling that retransmits in the data on this descending sub frame of base station feedback on sub-frame of uplink n=n '+k, be ACK/NACK information, wherein ACK represents that with ' 1 ' expression this moment, data correctly received, and does not need to retransmit; NACK represents data decoding mistake this moment with ' 0 ' expression, needs to retransmit.For FDD system, k=4.For the TDD system, k ∈ K, gather the value of K and number relevant, as shown in table 1 with the uplink-downlink configuration of system and concrete subframe:
Descending relative set K among the table 1:TDD
At this moment, a plurality of radio frames are arranged in proper order, and even last subframe is k among the radio frames a, and then first subframe is k+1 among the radio frames a+1, last table only with a radio frames be example provided each sub-frame of uplink institute for the situation of K, wherein the descending sub frame in the last radio frames item is represented in n-k<0.For example, for the subframe numbering 2 of uplink-downlink configuration 0, corresponding numerical value is 6,2-6=-4 in the table, and namely the feedback information of the descending sub frame 6 in the last radio frames sends in current subframe 2.
When system carries out many code words (code word) transmission, by the usage space multiplex technique, will be on same physical resource, multiplexing transmission belongs to same user's multiplex data stream.In the subframe, the data on the different data flow will independently be encoded, and become code word.The ACK/NACK information of feedback will produce based on code word this moment, namely to obtaining independently ACK/NACK information of 1 bit behind each codeword decoding.
Use BPSK or the ACK/NACK feedback information of QPSK to modulate in the system, and can only carry a modulation symbol in each sub-frame of uplink at most, this symbol is through modes such as twice spread spectrums, namely use cyclically shifted sequences to carry out spread spectrum at frequency domain earlier, re-use orthogonal sequence and carry out spread spectrum in time domain, after becoming a single carrier after the processing and broadcasting signal, transmit in the feedback channel of appointment, a plurality of users' ACK/NACK transmits at identical physical resource by the mode of sign indicating number branch is multiplexing in the residential quarter.
For different systems and configuration, in order to guarantee that the ACK/NACK on each descending sub frame can both be transmitted, and do not destroy the single-carrier property of uplink, then need a plurality of ACK/NACK feedback informations are merged processing, as, the ACK/NACK on a plurality of descending sub frames is merged into an ACK/NACK, the ACK/NACK of a plurality of code words in the descending sub frame is merged into an ACK/NACK.For example, under the TDD communication mode, the ACK/NACK of a plurality of descending sub frames need be in the configuration of same sub-frame of uplink feedback, as shown in table 1, subframe numbering 2 for uplink-downlink configuration 2, corresponding numerical value is 8,7,6,4 in the table, and namely the descending sub frame 4,6,7 in the last radio frames, 8 feedback information send in current subframe 2.In addition, detect performance comparatively reliably in order to guarantee having of feedback signaling, the feedback information of transmission can not surpass 2 bits in each sub-frame of uplink, and namely the highest QPSK that can only use modulates.
When the descending control signaling transmission is carried out in the base station, can distribute exclusive resource for each user, but the feedback transmission for uplink ACK/NACK, the user does not know that other users use channel situation, for fear of the user resource contention takes place when feeding back, the UE that feeds back will be according to the initial CCE numbering n of its descending control signaling that receives
CCE, calculate it and carry out ACK/NACK and feed back employed initial CCE numbering n
AN, n
ANBe one about n
CCEFunction, n
AN=f (n
CCE)+N
AN, N wherein
ANBe high-rise configuration parameter, this function satisfies one-to-one relationship, i.e. different n
CCECan obtain different n after the mapping
AN
There are two kinds of different uplink ACKs/NACK feedback methods at present under the LTE system TDD mode:
(1) ACK/NACK merges (Bundling) transmission.After ACK/NACK in M the subframe carried out logic add, obtain one group of compound ACK/NACK information, obtain a symbol through modulation, carry out processing such as " twice spread spectrums " again, use specific up channel to transmit.In merging transmission, merge and carry out based on code word.Wherein in the numbering of up channel and this M the subframe, belong to this user's the initial CCE numbering of descending control signaling binding on actual employed first subframe of user.For same user, the base station can only detect one group of ACK/NACK at most in a sub-frame of uplink, and will carry out identical processing to the data on M the subframe that merges: reaching maximum retransmission (comprising first transmission) before, occur decoding error or loss of data on arbitrary subframe, then the data on M subframe all will retransmit; If when M subframe all correctly receives, then do not need to retransmit.
(2) ACK/NACK multiplexing (multiplexing) transmission.ACK/NACK on a plurality of code words in each subframe is carried out obtaining a compound ACK/NACK after the logic add, obtain 2 bit feedback information b (0) according to the concrete situation of each descending sub frame, b (1), to b (0), after b (1) carries out QPSK modulation and obtains a modulation symbol, again it is carried out processing such as " twice spread spectrums ", and select suitable up channel to transmit.For M descending sub frame all exist one with its unique corresponding channel number n
UL, m, m ∈ 0,1 ..., M-1}.UE need be chosen in different channel numbers according to the concrete condition of feedback information, transmit 2 bit feedback information b (0), b (1), b (0), the value of b (1) is also relevant with the concrete condition of feedback information, is 2 to 4 situation for M, to shown in the table 4, wherein N/A represents also not define as table 2.This method of concrete use is, the base station can detect M the ACK/NACK state that belongs to same UE, therefore can handle respectively the data on this M subframe: during many codeword transmission, the data that belong to different code words in the same subframe will be carried out identical processing; Data on the different subframes can independently retransmit.
Feedback combination during table 2:M=2
HARQ-ACK(1),HARQ-ACK(2) |
n
UL,m |
b(0),b(1) |
ACK,ACK |
n
UL,1 |
1,1 |
ACK,NACK/DTX |
n
UL,0 |
0,1 |
NACK/DTX,ACK |
n
UL,1 |
0,0 |
NACK/DTX,NACK |
n
UL,1 |
1,0 |
NACK,DTX |
n
UL,0 |
1,0 |
DTX,DTX |
N/A |
N/A |
Feedback combination during table 3:M=3
HARQ-ACK(1),HARQ-ACK(2),HARQ-ACK(3) |
n
UL,m |
b(0),b(1) |
ACK,ACK,ACK |
n
UL,2 |
1,1 |
ACK,ACK,NACK/DTX |
n
UL,1 |
1,1 |
ACK,NACK/DTX,ACK |
n
UL,0 |
1,1 |
ACK,NACK/DTX,NACK/DTX |
n
UL,0 |
0,1 |
NACK/DTX,ACK,ACK |
n
UL,2 |
1,0 |
NACK/DTX,ACK,NACK/DTX |
n
UL,1 |
0,0 |
NACK/DTX,NACK/DTX,ACK |
n
UL,2 |
0,0 |
DTX,DTX,NACK |
n
UL,2 |
0,1 |
DTX,NACK,NACK/DTX |
n
UL,1 |
1,0 |
NACK,NACK/DTX,NACK/DTX |
n
UL,0 |
1,0 |
DTX,DTX,DTX |
N/A |
N/A |
Feedback combination during table 4:M=4
HARQ-ACK(1),HARQ-ACK(2),HARQ-ACK(3), HARQ-ACK(4) |
n
UL,m |
b(0),b(1) |
ACK,ACK,ACK,ACK |
n
UL,1 |
1,1 |
ACK,ACK,ACK,NACK/DTX |
n
UL,1 |
1,0 |
NACK/DTX,NACK/DTX,NACK,DTX |
n
UL,2 |
1,1 |
ACK,ACK,NACK/DTX,ACK |
n
UL,1 |
1,0 |
NACK,DTX,DTX,DTX |
n
UL,0 |
1,0 |
ACK,ACK,NACK/DTX,NACK/DTX |
n
UL,1 |
1,0 |
ACK,NACK/DTX,ACK,ACK |
n
UL,3 |
0,1 |
NACK/DTX,NACK/DTX,NACK/DTX,NACK |
n
UL,3 |
1,1 |
ACK,NACK/DTX,ACK,NACK/DTX |
n
UL,2 |
0,1 |
ACK,NACK/DTX,NACK/DTX,ACK |
n
UL,0 |
0,1 |
ACK,NACK/DTX,NACK/DTX,NACK/DTX |
n
UL,0 |
1,1 |
NACK/DTX,ACK,ACK,ACK |
n
UL,3 |
0,1 |
NACK/DTX,NACK,DTX,DTX |
n
UL,1 |
0,0 |
NACK/DTX,ACK,ACK,NACK/DTX |
n
UL,2 |
1,0 |
NACK/DTX,ACK,NACK/DTX,ACK |
n
UL,3 |
1,0 |
NACK/DTX,ACK,NACK/DTX,NACK/DTX |
n
UL,1 |
0,1 |
NACK/DTX,NACK/DTX,ACK,ACK |
n
UL,3 |
0,1 |
NACK/DTX,NACK/DTX,ACK,NACK/DTX |
n
UL,2 |
0,0 |
NACK/DTX,NACK/DTX,NACK/DTX,ACK |
n
UL,3 |
0,0 |
DTX,DTX,DTX,DTX |
N/A |
N/A |
System for the FDD communication mode, if the control signaling of having only up/descending persistent scheduling resource of a UE to discharge in the current subframe, because there is relation one to one in the ascending-descending subframes of FDD, the initial CCE numbering n of the control signaling that can discharge according to the persistent scheduling resource in the current subframe so
CCEObtain the channel number n of corresponding PUCCH
ANThereby, carry out the affirmation that up/descending persistent scheduling resource discharges.If the control signaling that exists the persistent scheduling resource about the uplink and downlink of UE to discharge in the current subframe simultaneously, for the feedback of PUCCH, the technical scheme realization that can propose according to the present invention, specific implementation is seen step S101, S102.
System for the TDD communication mode, owing to there is the situation of the corresponding sub-frame of uplink of a plurality of descending sub frames, need to transmit through ACK/NACK merging/multiplexing mechanism, if comprise one or the control signaling that exists up/descending persistent scheduling resource of UE to discharge simultaneously in the current subframe, the technical scheme that also can propose according to the present invention realizes that specific implementation is seen step S101, S102.
As shown in Figure 3, the flow chart of the confirming scheduling resource release method that proposes for the present invention may further comprise the steps:
S101:UE receives the release command of persistent scheduling resource, and wherein release command comprises the indication information of release command.
In the LTE system, for the activation of continuous dispatching and configuration again, mainly specify the customizing messages territory in the descending control signaling form to indicate by change.For the activation of continuous dispatching and again the configuration affirmation mechanism, be by being similar to the affirmation mechanism of PDSCH, because the affirmation mechanism of the activation of continuous dispatching and configuration again comprises the PDSCH data of needs transmission, reach the activation of continuous dispatching and the affirmation of configuration again by the affirmation for the PDSCH data that comprise in the current signaling.
According to the existing systems structure, the present invention proposes a kind of affirmation mechanism that discharges for persistent scheduling resource, and the technical scheme that proposes according to the present invention can realize the affirmation to the resource release command, utilize the message field of existing system definition again as far as possible, realize simple, efficient.
According to technical scheme of the present invention, adopt the mechanism of the persistent scheduling resource release of affirmation mechanism, these acknowledge messages need be confirmed by the ACK of PUCCH.Have only a kind of state for the affirmation that persistent scheduling resource discharges, UE receives the signaling of the release that the base station sends, and UE is with regard to feeding back ACK, the UE omission signaling of the release that sends of base station, then UE does not have corresponding feedback information.
As embodiments of the invention, the persistent scheduling resource release command comprises the release command of the persistent scheduling resource of uplink and downlink.In the present embodiment, indication information is that persistent scheduling resource discharges a bit or the information field among the Downlink Control Information DCI of channel, is used to indicate the release signaling that whether has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously.When UE need send acknowledge message to the base station, UE will feedback information goes control channel PUCCH physically and goes up and send to the base station.
For example, at the idle bit of the DCI form that is used for the persistent scheduling resource release signaling with 1 bit, be used to indicate the persistent scheduling resource release signaling that whether has uplink and downlink in the current subframe simultaneously, so both can notify UE the situation of the release signaling that current system sends, utilize the message field of existing system definition again as far as possible, realize simply, efficiently being conducive to improve the compatibility of system.
S102: according to release command and indication information, when UE correctly receives release command, send feedback information to the base station.
When indication information is indicated the release signaling that has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously, under the FDD communication mode, UE carries out the feedback information merging with the feedback information of uplink and downlink release signaling in table 5 mode, sends to described base station with the BPSK modulation system
Table 5: merge mapping
Descending release command |
Up release command |
Feedback information merges |
ACK |
ACK |
ACK |
ACK |
- |
DTX |
- |
ACK |
DTX |
- |
- |
DTX |
Wherein, described UE correctly receives release command and is designated as ACK, and DTX represents not send, and the described UE of "-" expression does not detect the persistent scheduling resource release signaling that the base station end sends.After the merging mode by table 5, obtain 1 bit information, can continue to use the feedback mechanism in the LTE system of above-mentioned introduction, confirmation is sent to the base station.
When indication information is indicated the release signaling that has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously, under the FDD communication mode, UE modulates mapping with the feedback information of uplink and downlink release signaling in table 6 mode, sends to the base station with the QPSK modulation system
Table 6: modulation mapping
Descending release command |
Up release command |
The QPSK symbol |
ACK |
ACK |
11 |
ACK |
- |
10 |
- |
ACK |
01 |
- |
- |
00 |
Wherein, UE correctly receives release command and is designated as ACK, and "-" expression UE does not detect the persistent scheduling resource release signaling that the base station end sends.After the modulation mapping by table 6, obtain 2 bit informations, can continue to use the feedback mechanism in the LTE system of above-mentioned introduction, confirmation is sent to the base station.
When indication information is indicated the release signaling that has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously, under the TDD communication mode, UE carries out the feedback information merging with the feedback information of uplink and downlink release signaling in table 5 mode, uses the transmission means that ACK/NACK merges among the LTE to send to the base station with the BPSK modulation system.Namely by after the merging mode of table 5, obtain 1 bit information, can continue to use the feedback mechanism in the LTE system of above-mentioned introduction, confirmation is sent to the base station.
When indication information is indicated the release signaling that has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously, under the TDD communication mode, UE carries out the feedback information merging with the feedback information of uplink and downlink release signaling in table 5 mode, the form that the ACK/NACK of the QPSK modulation of dicode word merges among the use LTE sends the ACK/NACK information merging that merges result afterwards and a code word in the dicode word to the base station; Perhaps
UE modulates mapping with the feedback information of uplink and downlink release signaling in table 6 mode, the form that the ACK/NACK of the QPSK modulation of dicode word merges among the use LTE, with the dibit information that obtains respectively with the dicode word in the ACK/NACK information of a code word merge, the result after merging is sent to the base station.
When indication information is indicated the release signaling that has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously, under the TDD communication mode, UE carries out the feedback information merging with the feedback information of uplink and downlink release signaling in table 5 mode, uses the multiplexing transmission means of ACK/NACK of the QPSK modulation among the LTE to send to the base station.
In addition, when indication information is indicated the release signaling that only has the persistent scheduling resource of upstream or downstream in the current subframe, under the FDD communication mode, UE numbers n according to the initial CCE of the control signaling that the persistent scheduling resource in the current subframe discharges
CCEObtain the channel number n of corresponding PUCCH
AN, with the feedback information of upstream or downstream release signaling at channel number n
ANOn send to the base station.
When indication information is indicated the release signaling that only has the persistent scheduling resource of upstream or downstream in the current subframe, under the TDD communication mode, the form that the ACK/NACK of UE by BPSK modulation merges sends to the base station with the feedback information of upstream or downstream release signaling at PUCCH, perhaps
UE merges or multiplexing form by the ACK/NACK of QPSK modulation, the feedback information of upstream or downstream release signaling is sent to the base station at PUCCH, wherein when merging the form transmission, the feedback information of upstream or downstream release signaling and a code word merge.
Below in conjunction with accompanying drawing 4a, the confirming scheduling resource release method that the present invention is proposed further illustrates.In the TDD system, in a plurality of descending sub frames of the feedback signaling correspondence that sub-frame of uplink carries.Shown in Fig. 4 a, comprise the persistent scheduling resource release signaling of uplink and downlink in the descending sub frame 2 simultaneously.In 4 descending sub frames of the feedback signaling correspondence that sub-frame of uplink carries, the indication information of release command is a bit or the information field among the Downlink Control Information DCI, be used to indicate the release signaling that whether has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously, for example, this bit is set to 1, represents to exist simultaneously in the same subframe up-downgoing resource release signaling.Merging/multiplex process and the meaning thereof of feedback signaling are as follows:
(1) detect two resource release signalings as UE, then the affirmation information of the resource release signaling of UE is transmitted at PUCCH, and the form of PUCCH defines according to technique scheme disclosed by the invention;
(2) when the UE omission resource release signaling in the descending sub frame 2, then UE can be the 1 resource release signaling of having confirmed whether omission according to the indication information of detected release command, if omission a resource release signaling, the affirmation information table of this information is shown DTX so, and the form of PUCCH defines according to technique scheme disclosed by the invention.
(3) if UE does not detect any resource release signaling, then judge according to other DAI information, the UE omission data in DAI counting, DAI is sent by the base station end, be mainly used in indicating the number that needs feeding back ACK/NACK that needs in the current sub-frame of uplink in corresponding a plurality of descending sub frames, UE is judging whether that according to the DAI that receives all packets all receive, for example, if DAI is 4, receive 3 packets so, then think one of them packet loss, then according to merging or multiplexing correlation technique is handled.。
The invention allows for a kind of confirming scheduling resource release method, may further comprise the steps:
The base station is to the release command of UE transmission persistent scheduling resource, and wherein said release command comprises the indication information of described release command, and described indication information is indicated the release signaling that whether has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously; The capable physically control channel PUCCH in described base station goes up the affirmation information of the described persistent scheduling resource release that receives described UE transmission.
As embodiments of the invention, described release command comprises the release command of the persistent scheduling resource of uplink and downlink.
As embodiments of the invention, described indication information comprises that persistent scheduling resource discharges a bit or the information field among the Downlink Control Information DCI of channel, is used to indicate the release signaling that whether has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously.By the indication of DCI field, both can notify UE the situation of the release signaling that current system sends, utilize the message field of existing system definition again as far as possible, realization is simple, efficient, is conducive to improve the compatibility of system.
The invention allows for a kind of confirming scheduling resource release method, may further comprise the steps: the release command of the persistent scheduling resource that the base station sends in a descending sub frame to UE, wherein said release command comprises the indication information of described release command; The capable physically control channel PUCCH in described base station goes up the affirmation information of the described persistent scheduling resource release that receives described UE transmission.
As embodiments of the invention, the indication information of described release command can realize that for example, under the FDD system, system is defined in the release signaling that only passes the persistent scheduling resource of upstream or downstream in the same descending sub frame by the system default configuration.With this understanding, in the specific implementation, the indication information of release command will can not occur.
As embodiments of the invention, the release command of described persistent scheduling resource is the release signaling of up persistent scheduling resource or the release signaling of downlink continuous scheduling resource, the scheduling of the release command of described persistent scheduling resource or Physical Downlink Shared Channel PDSCH indication sends in described descending sub frame, and described UE feed back the affirmation information that the scheduling of the release command of described persistent scheduling resource or Physical Downlink Shared Channel PDSCH is indicated in a sub-frame of uplink.
Shown in Fig. 4 b, Fig. 4 c and Fig. 4 d, after the scheduling of the release signaling of the release signaling of up persistent scheduling resource or downlink continuous scheduling resource or Physical Downlink Shared Channel PDSCH indication sent in descending sub frame, UE feed back the affirmation information that the scheduling of the release command of described persistent scheduling resource or Physical Downlink Shared Channel PDSCH is indicated in a sub-frame of uplink.
As embodiments of the invention, under the TDD communication mode, described UE merges or multiplexing form by ACK/NACK, the feedback information of upstream or downstream release signaling is sent to described base station at PUCCH, wherein, when the form that merges by ACK/NACK sends, the number of described indication information indication DAI in same up feedback window, when sending by the multiplexing form of ACK/NACK, the down data subframes number K of ACK/NACK feedback is carried out in described indication information indication in same up feedback window
PDSCHNumber K with the resource release signaling
SPS-releaseSum is not more than 4.
For example, as shown in table 1, subframe numbering 2 for uplink-downlink configuration 2, corresponding numerical value is 8,7,6,4 in the table, i.e. descending sub frame 4,6,7 in the last radio frames, 8 feedback information, described indication information indication DAI=4 in same up feedback window, namely when UE all correctly receives 4 information, to base station feedback ACK message, what at this moment no matter be that the base station sends is the release signaling of up and/or descending persistent scheduling resource, and base station and UE all know and discharged and obtain confirming.As the down data subframes number K that in same up feedback window, carries out the ACK/NACK feedback
PDSCHNumber K with the resource release signaling
SPS-releaseSum is not more than 4, UE and can uses the feedback combination of table 4 to send acknowledge message to the base station.
The said method that proposes according to the present invention, UE can release command be recognized feedback to resource by up channel.The said method that the present invention proposes takes full advantage of the message field that existing system defines, and realization is simple, efficient, is conducive to improve the compatibility of system.
As shown in Figure 5, the invention allows for a kind of UE500, comprise receiver module 510, feedback module 530, sending module 520.
Wherein, receiver module 510 is used for the release command of the persistent scheduling resource of reception base station transmission, and wherein release command comprises the indication information of release command; Feedback module 530 is used to indicate whether send feedback information and feedack content to the base station; Sending module 520 is used for to base station transmission feedback information.
As embodiments of the invention, UE500 also comprises parsing module 540, parsing module 540 is used for resolving the indication information of release command, wherein, indication information is that persistent scheduling resource discharges a bit or the information field among the Downlink Control Information DCI of channel, is used to indicate the release signaling that whether has the persistent scheduling resource of uplink and downlink in the current subframe simultaneously.
As embodiments of the invention, feedback module 530 comprises judge module 531, and judge module 531 is used for judging that current system is in FDD communication mode or TDD communication mode.
As embodiments of the invention, when judge module 531 judges that current system is in the FDD communication mode, and the indication information that parsing module 540 is resolved release commands is when having the release signaling of persistent scheduling resource of uplink and downlink in the current subframe simultaneously, feedback module 530 carries out the feedback information merging with the feedback information of uplink and downlink release signaling in table 5 mode, sending module 520 sends to the base station with the BPSK modulation system, perhaps
Feedback module 530 is modulated mapping with the feedback information of uplink and downlink release signaling in table 6 mode, and sending module 520 sends to the base station with the QPSK modulation system.
As embodiments of the invention, when judge module 531 judges that current system is in the TDD communication mode, and the indication information that parsing module 540 is resolved release commands is when having the release signaling of persistent scheduling resource of uplink and downlink in the current subframe simultaneously, feedback module 530 carries out the feedback information merging with the feedback information of uplink and downlink release signaling in table 5 mode, sending module 520 uses the transmission means that ACK/NACK merges among the LTE to send to the base station with the BPSK modulation system, perhaps
Feedback module 530 carries out the feedback information merging with the feedback information of uplink and downlink release signaling in table 5 mode, the form that the ACK/NACK of the QPSK modulation of dicode word merges among the use LTE, result after sending module 520 will merge and the ACK/NACK information of a code word in the dicode word merge to the base station transmission, perhaps
Feedback module 530 is modulated mapping with the feedback information of uplink and downlink release signaling in table 6 mode, the form that the ACK/NACK of the QPSK modulation of dicode word merges among the use LTE, with the dibit information that obtains respectively with the dicode word in the ACK/NACK information of a code word merge, result after sending module 520 will merge sends to the base station, perhaps
Feedback module 530 carries out the feedback information merging with the feedback information of uplink and downlink release signaling in table 5 mode, and sending module 520 uses the multiplexing transmission means of ACK/NACK of the QPSK modulation among the LTE to send to the base station.
The said equipment that proposes according to the present invention, UE can release command be recognized feedback to resource by up channel.The equipment UE that the present invention proposes takes full advantage of the message field that existing system defines, and realization is simple, efficient, is conducive to improve the compatibility of system.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.