CN104283646B - A kind of method of definite transmission mode feedback parameter - Google Patents

A kind of method of definite transmission mode feedback parameter Download PDF

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Publication number
CN104283646B
CN104283646B CN201310271831.8A CN201310271831A CN104283646B CN 104283646 B CN104283646 B CN 104283646B CN 201310271831 A CN201310271831 A CN 201310271831A CN 104283646 B CN104283646 B CN 104283646B
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ack
sequence
nack
status switch
coded information
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CN104283646A (en
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郭晨
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Potevio Institute of Technology Co Ltd
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Potevio Institute of Technology Co Ltd
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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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A kind of method of definite transmission mode feedback parameter, the described method includes：According to HARQ ACK information bit numbers OACKWith binding scrambler sequence structural regime sequence；According to the order of modulation Q of PUSCH channelsmHandle the ACK/NACK soft bit sequences received and obtain ACK/NACK coded information sequences；Status switch and ACK/NACK coded information sequences are subjected to coherent detection and obtain correlation；Feedback parameter N in ACK/NACK binding transmission modes is calculated in index value according to the generation scrambler of maximum related value corresponding states sequencebundling.After the embodiment of the present invention, determine the process of feedback parameter simply and time delay is shorter.

Description

A kind of method of definite transmission mode feedback parameter
Technical field
This application involves field of communication technology, more particularly, to a kind of method of definite transmission mode feedback parameter.
Background technology
In TD-LTE system, the transmission mode of ACK/NACK is divided into ACK/NACK bindings（bundling）And ACK/NACK Multiplexing（multiplexing）.For the ACK/NACK binding patterns in TD-LTE system, UE needs to transmit under each code word The PDSCH received in row subframe, and the ACK/NACK feedbacks of the PDCCH of indicating downlink semi-persistent scheduling release are done and are transported Calculate.UE needs to detect whether that losing downlink distributes, and when UE uplinks use PUSCH transmission, it is necessary to know NbundlingParameter Value, to determine the ACK/NACK information of UE feedbacks.If NbundlingBlind examination malfunctions, and base station may judge that UE is in DTX state, The demodulation performance of PUSCH can be so influenced, while can also interfere with judgement of the base station to PDCCH channel qualities.
Related protocol provides, if ACK/NACK patterns are bundling in TD-LTE system, one is selected in table 1 Bind scrambler sequence, to the ACK/NACK sequences after codingInto Row scrambling, generates scrambler bits sequenceI=(Nbundled-1)mod4。
Table 1
Base station is when receiving PUSCH channels, in this case it is not apparent that UE receives the situation of DCI, it is therefore desirable to determines that UE is used Nbundling, received ACK/NACK could be docked and descrambled.Pass through definite Nbundling, whether base station may determine that UE DCI is lost, and loses DCI numbers, so as to accurately decode ACK/NACK information, judges whether UE is in DTX state, with And the channel conditions of PDCCH, therefore, how to determine NbundlingSystem performance to ensureing TD-LTE is extremely important.
Base station, by channel estimation, equilibrium and demodulating process, can obtain PUSCH letters after PUSCH channels are received Data and the upload control letter carried on road（UCI）Soft bit, recycle channel deinterleave can obtain the soft of ACK/NACK Bit sequence.Since base station is not aware that the N that UE usesbundling, therefore can only determine that base station makes by way of poll blind examination Nbundling。
Base station obtains NbundlingBlind examination process mainly pass through ACK/NACK infomation detections, ACK/NACK sequences reconstruct and phase Three steps of judgement are closed, to possible NbundlingIt is polled, determines Nbundling, this method complexity is higher, processing delay It is longer.
The content of the invention
The embodiment of the present invention proposes a kind of method of definite transmission mode feedback parameter, determines that the process of feedback parameter is simple And time delay is shorter.
The technical solution of the embodiment of the present invention is as follows：
A kind of method of definite transmission mode feedback parameter, the described method includes：
According to HARQ-ACK information bits OACKWith binding scrambler sequence structural regime sequence；
According to the order of modulation Q of PUSCH channelsmHandle the ACK/NACK soft bit sequences received and obtain ACK/NACK volumes Code information sequence；
Status switch and ACK/NACK coded information sequences are subjected to coherent detection and obtain correlation；
ACK/NACK binding transmission is calculated in index value according to the generation scrambler of maximum related value corresponding states sequence Feedback parameter N in patternbundling。
The foundation HARQ-ACK information bits OACKInclude with binding scrambler sequence structural regime sequence：
OACKWhen=1, by binding scrambler sequence according to correspondence structural regime sequence；
The correspondence includes：When it is 1 to bind the scrambling sequence values in scramble sequence, the state sequence in status switch Train value is -1；When the scrambling sequence values are 0, the status switch value is 1.
The foundation HARQ-ACK information bits OACKInclude with binding scrambler sequence structural regime sequence：
OACKWhen=2, status switch is obtained according to correspondence after each for binding scrambler sequence is expanded to three；
The correspondence includes：When the scrambling sequence values in the binding scrambler sequence after extension are 1, in status switch Status switch value be -1；When the scrambling sequence values are 0, the status switch value is 1.
It is described by QmThe ACK/NACK soft bits that processing receives, which obtain ACK/NACK coded information sequences, to be included：According to Qm The delete position filling bit in the ACK/NACK soft bits received, obtains ACK/NACK coded information sequences.
The status switch obtains correlation with the progress coherent detection of ACK/NACK coded information sequences to be included：
The length of status switch is expanded to the sequence identical with ACK/NACK coded information sequences length；
Status switch after extension carries out coherent detection with ACK/NACK coded information sequences and obtains correlation.
It is described the length of status switch is expanded into the sequence identical with ACK/NACK coded information sequences length to include：
Status switch is at least repeated once, the status switch length after repeating is grown more than ACK/NACK coded information sequences Degree；
From the beginning the sequence conduct identical with ACK/NACK coded information sequences length is intercepted in status switch after the repetition Status switch after extension.
Status switch after the extension carries out coherent detection with ACK/NACK coded information sequences and obtains correlation：Extension Status switch afterwards is superimposed again after being multiplied respectively with ACK/NACK coded information sequences, then takes absolute value to obtain correlation.
From above-mentioned technical proposal as can be seen that in embodiments of the present invention according to HARQ-ACK information bits OACKWith Bind scrambler sequence structural regime sequence；According to the order of modulation Q of PUSCH channelsmHandle the ACK/NACK soft bits received Sequence obtains ACK/NACK coded information sequences；Status switch is carried out coherent detection with ACK/NACK coded information sequences to obtain Correlation；ACK/NACK binding transmission moulds are calculated in index value according to the generation scrambler of maximum related value corresponding states sequence Feedback parameter N in formulabundling.Since poll is not required during whole definite feedback parameter, but choose maximal correlation Value directly calculates and obtains feedback parameter, therefore detection process complexity is relatively low and time delay is shorter.
Brief description of the drawings
Fig. 1 is the method flow schematic diagram for determining transmission mode feedback parameter.
Embodiment
It must be more clearly understood to express the object, technical solutions and advantages of the present invention, below in conjunction with the accompanying drawings and specifically The present invention is further described in more detail for embodiment.
In embodiments of the present invention, it is not necessary to dock received ACK/NACK soft bits sequence and be detected and reconstruct.Base Stand according to Given information, utilize OACKWith binding scrambler sequence structural regime sequence, then by status switch and processing after ACK/ NACK soft bits sequence carries out coherent detection, you can determines NbundlingNumerical value.N is determined using the technical solutionbundling, can By property, high and implementation complexity is low, significantly reduces the complexity and processing delay of equipment.
The method flow schematic diagram of transmission mode feedback parameter is to determine referring to attached drawing 1, specifically includes following steps：
101st, according to HARQ-ACK information bits OACKWith binding scrambler sequence structural regime sequence.
According to known HARQ-ACK information bits OACKWith binding scrambler sequenceConstruct shape State sequence.Bind corresponding sequence in scrambler sequence, that is, table 1.
Work as OACKWhen=1, according to related protocol for the bit scrambled after coding, the ratio special envoy after every 1 coding Mould two is carried out with identical scrambler to be added, therefore the value of the sequence after scrambling and the value one-to-one corresponding phase for binding scramble sequence Close, status switch can be directly obtained according to binding scramble sequence.I.e.:When it is 1 to bind the scrambling sequence values in scramble sequence, shape Status switch value in state sequence is -1；When the scrambling sequence values are 0, the status switch value is 1.Specifically：Work as OACK When=1, status switch μ is：
Wherein, sc represents scrambler sequence.
Work as OACKWhen=2, according to related protocol for the bit scrambled after coding, the ratio special envoy after every 3 codings Mould two is carried out with identical scrambler to be added, therefore the value phase corresponding with the value for binding scramble sequence of the sequence after every 3 scramblings Close.It is extended first according to binding scramble sequence, after each for binding scramble sequence is extended to three, according to following Correspondence can obtain status switch.When the scrambling sequence values in the binding scrambler sequence after extension are 1, in status switch Status switch value is -1；When the scrambling sequence values are 0, the status switch value is 1.Specifically, O is worked asACKWhen=2, state Sequence μ is：
102nd, according to the order of modulation Q of PUSCH channelsmHandle the soft bit received and obtain ACK/NACK coding information sequences Row.
According to the order of modulation Q of PUSCH channelsm, handle the soft bit receivedDelete Except position filling bit x, ACK/NACK coded information sequences are obtainedConcrete operations are as follows：
1）, coding mode QPSK, i.e. QmWhen=2, no x filling bits,
2）, coding mode 16COM, i.e. QmWhen=4, according to table 2（1 bit HARQ-ACK is encoded）With table 3（2 bits HARQ-ACK）Understand, rear 2 bits of every 4 bit are x occupy-place bits, willSequence is split by every 4,2 after deletion Position, obtains sequence
Table 2
Table 3
3）, coding mode 64COM, i.e. QmWhen=6, according to table 2 and table 3, rear 4 bits of every 6 bit are x packing ratios Spy, willSequence is split by every 6,4 after deletion, obtains sequence
103rd, status switch and ACK/NACK coded information sequences are subjected to coherent detection and obtain correlation.
The length of status switch is expanded to the sequence identical with ACK/NACK coded information sequences length first, is so done Purpose be that two identical sequences of length can just carry out related calculation.
Then, the status switch after extension carries out coherent detection with ACK/NACK coded information sequences and obtains correlation.
Status switch is at least repeated once, the status switch length after repeating is grown more than ACK/NACK coded information sequences Degree；From the beginning after the sequence identical with ACK/NACK coded information sequences length is intercepted in status switch after the repetition as extension Status switch.
Status switch after extension is superimposed again after being multiplied respectively with ACK/NACK coded information sequences, is then taken absolute value To correlation.
δ is correlation.
104th, ACK/NACK bindings are calculated in the index value according to the generation scrambler of maximum related value corresponding states sequence Feedback parameter N in transmission modebundling。
The generation scrambler of the corresponding status switch of maximum related value is the scrambler of ACK/NACK scramblings.I.e. according to generation scrambler Its corresponding index value A can be known in table 1.Base station is according to index value in the prior art and NbundlingRelation can calculate Obtain Nbundling。
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on, should be included in the protection of the present invention Within the scope of.

Claims (5)

  1. A kind of 1. method of definite transmission mode feedback parameter, it is characterised in that the described method includes：
    According to HARQ-ACK information bits OACKWith binding scrambler sequence structural regime sequence；
    According to the order of modulation Q of PUSCH channelsmHandle the ACK/NACK soft bit sequences received and obtain ACK/NACK coding letters Cease sequence；
    Status switch and ACK/NACK coded information sequences are subjected to coherent detection and obtain correlation；
    ACK/NACK binding transmission modes are calculated in index value according to the generation scrambler of maximum related value corresponding states sequence Middle feedback parameter Nbundling；
    Wherein,
    The foundation HARQ-ACK information bits OACKInclude with binding scrambler sequence structural regime sequence：
    OACKWhen=1, by binding scrambler sequence according to correspondence structural regime sequence；Structural regime sequence institute root during OACK=1 According to correspondence include：When bind the scrambling sequence values in scrambler sequence for 1 when, status switch value in status switch for- 1；When the scrambling sequence values are 0, the status switch value is 1；
    OACKWhen=2, status switch is obtained according to correspondence after each for binding scrambler sequence is expanded to three；OACK When=2 structural regime sequence institute according to correspondence include：The scrambling sequence values in binding scrambler sequence after extension are 1 When, the status switch value in status switch is -1；When the scrambling sequence values are 0, the status switch value is 1.
  2. 2. the method for transmission mode feedback parameter is determined according to claim 1, it is characterised in that described by QmProcessing receives To ACK/NACK soft bit sequences obtain ACK/NACK coded information sequences and include：According to QmIt is soft in the ACK/NACK received Delete position filling bit in bit sequence, obtains ACK/NACK coded information sequences.
  3. 3. determine the method for transmission mode feedback parameter according to claim 1, it is characterised in that the status switch with The progress coherent detection of ACK/NACK coded information sequences, which obtains correlation, to be included：
    The length of status switch is expanded to the sequence identical with ACK/NACK coded information sequences length；
    Status switch after extension carries out coherent detection with ACK/NACK coded information sequences and obtains correlation.
  4. 4. the method for transmission mode feedback parameter is determined according to claim 3, it is characterised in that described by status switch Length, which expands to the sequence identical with ACK/NACK coded information sequences length, to be included：
    Status switch is at least repeated once, the status switch length after repeating is more than ACK/NACK coded information sequences length；
    From the beginning the sequence identical with ACK/NACK coded information sequences length is intercepted in status switch after the repetition as extension Status switch afterwards.
  5. 5. the method for transmission mode feedback parameter is determined according to claim 3, it is characterised in that the state after the extension Sequence carries out coherent detection with ACK/NACK coded information sequences and obtains correlation：Status switch after extension is compiled with ACK/NACK Code information sequence is superimposed again after being multiplied respectively, then takes absolute value to obtain correlation.
CN201310271831.8A 2013-07-01 2013-07-01 A kind of method of definite transmission mode feedback parameter Expired - Fee Related CN104283646B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101801097A (en) * 2010-01-08 2010-08-11 中兴通讯股份有限公司 Method for indicating physical uplink shared channel scheduling information
CN101958777A (en) * 2010-09-28 2011-01-26 中兴通讯股份有限公司 Processing method and device for sending correct/error response messages
CN102684853A (en) * 2012-04-17 2012-09-19 电信科学技术研究院 Selection method and selection device for ACK (acknowledgement character) feedback mode
WO2012155753A1 (en) * 2011-09-29 2012-11-22 中兴通讯股份有限公司 Transmission method and device
CN102904698A (en) * 2011-05-31 2013-01-30 北京三星通信技术研究有限公司 Method for sending hybrid automatic repeat request-acknowledgement character (HARQ-ACK) feedback information

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101801097A (en) * 2010-01-08 2010-08-11 中兴通讯股份有限公司 Method for indicating physical uplink shared channel scheduling information
CN101958777A (en) * 2010-09-28 2011-01-26 中兴通讯股份有限公司 Processing method and device for sending correct/error response messages
CN102904698A (en) * 2011-05-31 2013-01-30 北京三星通信技术研究有限公司 Method for sending hybrid automatic repeat request-acknowledgement character (HARQ-ACK) feedback information
WO2012155753A1 (en) * 2011-09-29 2012-11-22 中兴通讯股份有限公司 Transmission method and device
CN102684853A (en) * 2012-04-17 2012-09-19 电信科学技术研究院 Selection method and selection device for ACK (acknowledgement character) feedback mode

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