CN104283646B - A kind of method of definite transmission mode feedback parameter - Google Patents
A kind of method of definite transmission mode feedback parameter Download PDFInfo
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- 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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- 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
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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
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method for determining a transmission mode feedback parameter.
Background
In the TD-LTE system, the transmission mode of ACK/NACK is divided into ACK/NACK bundling (bundling) and ACK/NACK multiplexing (multiplexing). For an ACK/NACK binding mode in a TD-LTE system, UE needs to transmit a PDSCH received in a downlink subframe of each code word and performs AND operation on ACK/NACK feedback of a PDCCH indicating downlink semi-persistent scheduling release. The UE needs to detect whether downlink allocation is lost, and when the UE uses PUSCH transmission in uplink, it needs to know NbundlingThe value of the parameter to determine the ACK/NACK information fed back by the UE. If N is presentbundlingIn case of error in blind detection, the base station may determine that the UE is in a DTX state,this may affect the demodulation performance of the PUSCH and may also interfere with the determination of the PDCCH channel quality by the base station.
The related protocol provides that if the ACK/NACK mode is bundling in the TD-LTE system, a binding scrambling code sequence is selected in the table 1For the coded ACK/NACK sequenceScrambling is carried out to generate a scrambled bit sequencei＝(Nbundled-1)mod4。
TABLE 1
When the base station receives the PUSCH, the base station does not know the DCI received by the UE, so that the N used by the UE needs to be determinedbundlingOnly the received ACK/NACK can be descrambled. By determining NbundlingThe base station can judge whether the UE loses the DCI and the number of the lost DCI, thereby accurately decoding ACK/NACK information, judging whether the UE is in a DTX state and judging the channel condition of the PDCCH, and determining how to determine NbundlingThe method is very important for guaranteeing the system performance of the TD-LTE.
After receiving the PUSCH channel, the base station may obtain the data carried on the PUSCH channel and the soft bits of the Uplink Control Information (UCI) through channel estimation, equalization, and demodulation processes, and may obtain the soft bit sequence of ACK/NACK by using channel deinterleaving. Since the base station does not know the N used by the UEbundlingTherefore, the N used by the base station can be determined only by polling blind detectionbundling。
Base station obtains NbundlingBy blind inspectionThe process mainly comprises three steps of ACK/NACK information detection, ACK/NACK sequence reconstruction and relevant judgment for possible NbundlingPolling is performed to determine NbundlingThe method has higher complexity and longer processing time delay.
Disclosure of Invention
The embodiment of the invention provides a method for determining a transmission mode feedback parameter, which has the advantages of simple process for determining the feedback parameter and short time delay.
The technical scheme of the embodiment of the invention is as follows:
a method of determining transmission mode feedback parameters, the method comprising:
according to HARQ-ACK information bit number OACKAnd binding the scrambling code sequence to construct a state sequence;
modulation order Q according to PUSCH channelmProcessing the received ACK/NACK soft bit sequence to obtain an ACK/NACK coding information sequence;
carrying out correlation detection on the state sequence and the ACK/NACK coding information sequence to obtain a correlation value;
calculating to obtain a feedback parameter N in the ACK/NACK binding transmission mode according to the index value of the generated scrambling code of the state sequence corresponding to the maximum correlation valuebundling。
The number of bits O according to the HARQ-ACK informationACKAnd the binding scrambling code sequence construction state sequence comprises the following steps:
OACKwhen the number is not less than 1, constructing a state sequence by the binding scrambling code sequence according to the corresponding relation;
the corresponding relation comprises: when the scrambling sequence value in the binding scrambling sequence is 1, the state sequence value in the state sequence is-1; when the scrambling sequence value is 0, the state sequence value is 1.
The number of bits O according to the HARQ-ACK informationACKAnd the binding scrambling code sequence construction state sequence comprises the following steps:
OACKwhen the number is not less than 2, expanding each bit of the binding scrambling code sequence into three bits, and then obtaining a state sequence according to the corresponding relation;
the corresponding relation comprises: when the scrambling sequence value in the expanded binding scrambling sequence is 1, the state sequence value in the state sequence is-1; when the scrambling sequence value is 0, the state sequence value is 1.
Said is composed of QmThe processing of the received ACK/NACK soft bits to obtain an ACK/NACK coding information sequence comprises: according to QmAnd deleting position filling bits in the received ACK/NACK soft bits to obtain an ACK/NACK coding information sequence.
The obtaining of the correlation value by performing correlation detection on the state sequence and the ACK/NACK coding information sequence comprises:
expanding the length of the state sequence into a sequence with the same length as the ACK/NACK coding information sequence;
and carrying out correlation detection on the expanded state sequence and the ACK/NACK coding information sequence to obtain a correlation value.
The expanding the length of the status sequence to a sequence having the same length as the ACK/NACK coding information sequence includes:
repeating the state sequence at least once, wherein the length of the repeated state sequence is greater than that of the ACK/NACK coding information sequence;
and intercepting a sequence with the same length as the ACK/NACK coding information sequence from the head in the repeated state sequence as an expanded state sequence.
And the expanded state sequence and the ACK/NACK coding information sequence are subjected to correlation detection to obtain a correlation value: and respectively multiplying the expanded state sequence and the ACK/NACK coding information sequence, then superposing the multiplied state sequences and the ACK/NACK coding information sequence, and then taking an absolute value to obtain a correlation value.
From the above technical solution, it can be seen that the present inventionAccording to HARQ-ACK information bit number O in the embodiment of the inventionACKAnd binding the scrambling code sequence to construct a state sequence; modulation order Q according to PUSCH channelmProcessing the received ACK/NACK soft bit sequence to obtain an ACK/NACK coding information sequence; carrying out correlation detection on the state sequence and the ACK/NACK coding information sequence to obtain a correlation value; calculating to obtain a feedback parameter N in the ACK/NACK binding transmission mode according to the index value of the generated scrambling code of the state sequence corresponding to the maximum correlation valuebundling. Because polling is not needed in the whole process of determining the feedback parameters, the maximum correlation value is selected to directly calculate and obtain the feedback parameters, the complexity of the detection process is low, and the time delay is short.
Drawings
Fig. 1 is a flowchart illustrating a method for determining a transmission mode feedback parameter.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
In the embodiment of the invention, the received ACK/NACK soft bit sequence does not need to be detected and reconstructed. The base station utilizes O according to the known informationACKAnd binding the scrambling code sequence to construct a state sequence, and then carrying out correlation detection on the state sequence and the processed ACK/NACK soft bit sequence to determine NbundlingThe numerical value of (c). The technical scheme is adopted to determine NbundlingThe reliability is high, the implementation complexity is low, and the complexity and the processing time delay of the equipment are effectively reduced.
Referring to fig. 1, a flow chart of a method for determining a transmission mode feedback parameter is schematically shown, and specifically includes the following steps:
101. according to HARQ-ACK information bit number OACKAnd binding scrambling codesThe sequence constructs a state sequence.
According to the known HARQ-ACK information bit number OACKAnd a binding scrambling sequenceAnd constructing a state sequence. The binding scrambling sequence is the corresponding sequence in table 1.
When O is presentACKWhen the code number is not less than 1, for the coded bits scrambled according to the relevant protocol, every 1 coded bit uses the same scrambling code to perform modulo two addition, so that the value of the scrambled sequence is in one-to-one correspondence with the value of the binding scrambling sequence, and the state sequence can be directly obtained according to the binding scrambling sequence. When the scrambling sequence value in the binding scrambling sequence is 1, the state sequence value in the state sequence is-1; when the scrambling sequence value is 0, the state sequence value is 1. Specifically, the method comprises the following steps: when O is presentACKWhen =1, the state sequence μ is:
where sc represents the scrambling code sequence.
When O is presentACKIf =2, for the coded scrambled bits according to the correlation protocol, every 3 coded bits are modulo-two added using the same scrambling code, so that the value of every 3 scrambled sequences is correlated with the value of the binding scrambling sequence. Firstly, spreading is carried out according to a binding scrambling sequence, and after each bit of the binding scrambling sequence is spread into three bits, a state sequence can be obtained according to the following corresponding relation. When the scrambling sequence value in the expanded binding scrambling sequence is 1, the state sequence value in the state sequence is-1; when the scrambling sequence value is 0, the state sequence value is 1. Specifically, when OACKWhen =2, the state sequence μ is:
102. modulation order Q according to PUSCH channelmAnd processing the received soft bits to obtain an ACK/NACK coding information sequence.
Modulation order Q according to PUSCH channelmProcessing the received soft bitsI.e. deleting the position padding bit x, to obtain the ACK/NACK coding information sequenceThe specific operation is as follows:
1) the coding scheme is QPSK, i.e. QmWhen =2, there are no x padding bits,
2) encoding system is 16COM, namely QmIf =4, as can be seen from table 2 (1-bit HARQ-ACK encoding) and table 3 (2-bit HARQ-ACK), the last 2 bits of every 4 bits are x-place-occupying bits, and the data is to be transmittedDividing the sequence according to every 4 bits, deleting the last 2 bits to obtain the sequence
TABLE 2
TABLE 3
3) The coding mode is 64COM, namely QmIf =6, the last 4 bits of each 6 bits are x padding bits according to tables 2 and 3, and the number of bits is set to be equal to or less than x padding bitsDividing the sequence according to every 6 bits, deleting the last 4 bits to obtain the sequence
103. And carrying out correlation detection on the state sequence and the ACK/NACK coding information sequence to obtain a correlation value.
The length of the status sequence is first extended to a sequence with the same length as the ACK/NACK coding information sequence, which aims at that two sequences with the same length can perform correlation operation.
And then, carrying out correlation detection on the expanded state sequence and the ACK/NACK coding information sequence to obtain a correlation value.
Repeating the state sequence at least once, wherein the length of the repeated state sequence is greater than that of the ACK/NACK coding information sequence; and intercepting a sequence with the same length as the ACK/NACK coding information sequence from the head in the repeated state sequence as an expanded state sequence.
And respectively multiplying the expanded state sequence and the ACK/NACK coding information sequence, then superposing the multiplied state sequences and the ACK/NACK coding information sequence, and then taking an absolute value to obtain a correlation value.
δ is a correlation value.
104. Calculating to obtain a feedback parameter N in the ACK/NACK binding transmission mode according to the index value of the generated scrambling code of the state sequence corresponding to the maximum correlation valuebundling。
And the generated scrambling code of the state sequence corresponding to the maximum correlation value is the scrambling code of ACK/NACK scrambling. That is, the index value a corresponding to the generated scrambling code can be known in table 1. The base station according to the index value and N in the prior artbundlingCan be calculated to obtain Nbundling。
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A method of determining transmission mode feedback parameters, the method comprising:
according to HARQ-ACK information bit number OACKAnd binding the scrambling code sequence to construct a state sequence;
modulation order Q according to PUSCH channelmProcessing the received ACK/NACK soft bit sequence to obtain an ACK/NACK coding information sequence;
carrying out correlation detection on the state sequence and the ACK/NACK coding information sequence to obtain a correlation value;
corresponding state sequence according to maximum correlation valueCalculating the index value of the generated scrambling code of the column to obtain a feedback parameter N in an ACK/NACK binding transmission modebundling；
Wherein,
the number of bits O according to the HARQ-ACK informationACKAnd the binding scrambling code sequence construction state sequence comprises the following steps:
OACKwhen the number is 1, constructing a state sequence by the binding scrambling code sequence according to the corresponding relation; when the OACK is 1, the corresponding relation according to which the state sequence is constructed includes: when the scrambling sequence value in the binding scrambling sequence is 1, the state sequence value in the state sequence is-1; when the scrambling sequence value is 0, the state sequence value is 1;
OACKwhen the number is 2, expanding each bit of the binding scrambling code sequence into three bits, and then obtaining a state sequence according to the corresponding relation; when the OACK is 2, the corresponding relation according to which the state sequence is constructed includes: when the scrambling sequence value in the expanded binding scrambling sequence is 1, the state sequence value in the state sequence is-1; when the scrambling sequence value is 0, the state sequence value is 1.
2. The method of claim 1, wherein Q is the number of bits in the received signalmThe processing the received ACK/NACK soft bit sequence to obtain an ACK/NACK coding information sequence comprises the following steps: according to QmAnd deleting the position filling bits in the received ACK/NACK soft bit sequence to obtain an ACK/NACK coding information sequence.
3. The method of claim 1, wherein the detecting the correlation between the status sequence and the ACK/NACK coding information sequence to obtain the correlation value comprises:
expanding the length of the state sequence into a sequence with the same length as the ACK/NACK coding information sequence;
and carrying out correlation detection on the expanded state sequence and the ACK/NACK coding information sequence to obtain a correlation value.
4. The method of claim 3, wherein the extending the length of the status sequence to a sequence having the same length as the ACK/NACK coding information sequence comprises:
repeating the state sequence at least once, wherein the length of the repeated state sequence is greater than that of the ACK/NACK coding information sequence;
and intercepting a sequence with the same length as the ACK/NACK coding information sequence from the head in the repeated state sequence as an expanded state sequence.
5. The method of claim 3, wherein the extended state sequence is correlated with the ACK/NACK coding information sequence to obtain a correlation value: and respectively multiplying the expanded state sequence and the ACK/NACK coding information sequence, then superposing the multiplied state sequences and the ACK/NACK coding information sequence, and then taking an absolute value to obtain a correlation value.
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Citations (5)
| 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 |
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| 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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