CN102594535A - Adaptive weighted HARQ (hybrid automatic repeat request) combination method and device - Google Patents
Adaptive weighted HARQ (hybrid automatic repeat request) combination method and device Download PDFInfo
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Abstract
The invention provides an adaptive weighted HARQ (hybrid automatic repeat request) combination method and an adaptive weighted HARQ combination device, relates to the field of communication techniques, and solves the problem that under the condition that the code rate of requested data is higher than the code rate of to-be-decoded data subjected to decoding failure, a receiving end after receiving the requested data is low in success rate of data decoding. The method specially comprises the following steps of: receiving requested data; multiplying the requested data by a combined weight value so as to obtain a product, adding the product and to-be-decoded data subjected to decoding failure together so as to obtain data subjected to adding, and updating the to-be-decoded data into the data subjected to adding, so that the combined weight value is greater than the ratio of the code rate of the requested data to the code rate of the to-be-decoded data subjected to decoding failure; and carrying out decoding on the updated to-be-decoded data. The method and device disclosed by the invention can be applied to adaptive weighted HARQ combination.
Description
Technical field
The present invention relates to communication technical field, relate in particular to the method and apparatus that the automatic request retransmission of adaptive weighted mixing merges.
Background technology
In communication system, receiving terminal is at first deciphered the data that receive after the data that receive the transmitting terminal transmission.But in some cases,, make receiving terminal to the data decoding failure because the interference of channel causes transferring to the corrupted data of receiving terminal.
In the prior art; At LTE (Long Term Evolution; Long Term Evolution) in the system; Increase the decoding success rate of receiving terminal through AMC (Adaptive Modulation and Coding, adaptive modulation and coding) technology and HARQ (Hybrid-Automatic Repeat-reQuest mixes automatic request retransmission) technology.
Through adopting the AMC technology; Before each transmitting terminal sends data; Transmitting terminal is according to the modulating mode of channel condition information adjustment data and the code check of data; Make through ovennodulation and coded data adaptive channel transmission more, after transferring to receiving terminal, make receiving terminal increase the decoding success rate of these data.
The data that receiving terminal receives for the first time can be called the first data that pass, and the corresponding data that receive after first the reception are called data retransmission, and data retransmission generates by identical original information bits set with the first data that comprise in the data that pass.Owing to having adopted the AMC technology, therefore, the first biography of data retransmission ratio data are more reliable, make that it is bigger to decipher probability of successful after data retransmission and the biography data merging just.
If receiving terminal is failed to first biography data decoding, then transmitting terminal sends data retransmission to receiving terminal after the data re-transmission request that receives the receiving terminal transmission; Receiving terminal is after receiving data retransmission, with data retransmission and the corresponding bit addition of biography data just; The data of receiving terminal after to addition are deciphered, if decoding failure then repeats above-mentioned steps, till the decoding success or reaching maximum retransmission.
The code check of data is raw information and the number of bits of CRC (Cyclical Redundancy Check, CRC) and the ratio of the maximal bit figure place that channel can carry of these data.Under the certain prerequisite of number of bits that channel can carry, the number of bits of the raw information of data is many more, and then the code check of these data is big more; The number of bits of data is few more, and then the code check of these data is more little.
The number of bits of the data that receiving terminal receives is the maximal bit figure place that current channel can carry; If the number of bits of data waiting for transmission is less than the maximal bit figure place that can carry, then transmitting terminal can repeat to send data to be transmitted up to reaching the maximum that channel can carry.Receiving terminal can add up the data that repeat to send after receiving all data.Therefore, the code check of data is more little, and the number of times that receiving terminal receives this data repetition is many more, and then receiving terminal is before deciphering data, and the number of times that these data are added up is many more; The code check of data is big more, and the number of times that receiving terminal receives this data repetition is few more, and then receiving terminal is before deciphering data, and the number of times that these data are added up is few more.
State in realization in the process of adaptive weighted HARQ merging; Because it is not invariable being used to transmit the state that just passes the channel of data and data retransmission; Therefore, the maximal bit figure place that channel can carry neither be invariable, and causing just passing data maybe be different with the code check of data retransmission.If the code check of data retransmission causes receiving terminal in the HARQ merging process greater than the code check that just passes data, the number of times that data retransmission is added up is less than the accumulative frequency that just passes data, and the success rate that causes receiving terminal that the data after adding up are deciphered is less.
Summary of the invention
Embodiments of the invention provide a kind of adaptive weighted mixing method, device that automatic request retransmission merges; Be higher than the situation of code check of the data to decode of decoding failure applicable to the code check of data retransmission, improve the success rate that the HARQ merging data is deciphered.
For achieving the above object, embodiments of the invention adopt following technical scheme:
The method that the automatic request retransmission of a kind of adaptive weighted mixing merges comprises:
Receive data retransmission;
With said data retransmission with merge weighted value and multiply each other and obtain product; The data to decode addition of said product and the decoding failure that receives is before obtained the data after the addition; Said data to decode is updated to the data after the addition, and said merging weighted value is greater than the ratio of the code check of the data to decode of the code check of said data retransmission and said decoding failure;
Said data to decode to after upgrading is deciphered.
The device that the automatic request retransmission of a kind of adaptive weighted mixing merges comprises:
Receiving element is used to receive data retransmission;
Merge cells; Be used for said data retransmission with merge weighted value and multiply each other and obtain product; The data to decode addition of said product and the decoding failure that receives is before obtained the data after the addition; Said data to decode is updated to the data after the addition, and said merging weighted value is greater than the ratio of the code check of the data to decode of the code check of said data retransmission and said decoding failure;
Decoding unit is used for the said data to decode after upgrading is deciphered.
Method, device that the automatic request retransmission of the adaptive weighted mixing that the embodiment of the invention provides merges; Receiving terminal is after receiving data to decode; Confirm at first whether these data are data retransmission; If these data are data retransmission, then with this data retransmission and after merging multiplied by weight, with the data to decode addition of the corresponding decoding failure that receives before; Data to decode is revised as the data after the addition, merges the ratio of weighted value greater than the code check of the data to decode of the code check of data retransmission and decoding failure.After adopting such scheme; Since data retransmission with the data to decode addition of corresponding decoding failure before; With merge multiplied by weight, make that the proportion of data retransmission increases in the data to decode after addition, and then increased the decoding success rate of the data to decode after the addition.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The method flow diagram that the automatic request retransmission of a kind of adaptive weighted mixing that Fig. 1 provides for the embodiment of the invention merges;
The method flow diagram that the automatic request retransmission of another kind of adaptive weighted mixing that Fig. 2 provides for the embodiment of the invention merges;
The structure drawing of device that the automatic request retransmission of a kind of adaptive weighted mixing that Fig. 3 provides for the embodiment of the invention merges;
The structure drawing of device that the automatic request retransmission of another kind of adaptive weighted mixing that Fig. 4 provides for the embodiment of the invention merges.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Present embodiment provides a kind of adaptive weighted mixing method that automatic request retransmission merges, and is as shown in Figure 1, may further comprise the steps:
101, receive data retransmission.
The data that receiving terminal receives for the first time can be called biography data just, can be called data retransmission in the first corresponding data that receive after the data that pass, and just pass the data decoding failure, then need to retransmit.After receiving data retransmission, just pass the data to decode that data are decoding failure.
Receiving terminal is at first deciphered data after receiving data; If decoding failure, then receiving terminal sends the data re-transmission request to transmitting terminal; Transmitting terminal sends data retransmission to transmitting terminal after receiving the data re-transmission request, data retransmission is subordinated to same packet with the first data that pass; If receiving terminal is deciphered still failure to data after receiving data retransmission, then continue to send the data re-transmission request to transmitting terminal, receive data retransmission, till receiving terminal decoding success or reaching maximum retransmission.
In order to make place mat for subsequent step, increase decoding success rate, receiving terminal receives data retransmission.
102, with data retransmission with merge weighted value and multiply each other and obtain product, the data to decode addition of product and the decoding failure that receives is before obtained the data after the addition, data to decode is updated to the data after the addition.
This programme increases the decoding success rate of receiving terminal through AMC technology and HARQ technology, and it is more reliable than just passing data to think data retransmission, in the HARQ merging process, suitably adjusts the proportion of data retransmission, helps improving deciphering probability of successful.
In order to adjust the proportion in the data to decode of data retransmission after addition; Before carrying out sum operation; Earlier data retransmission being multiplied each other with the merging weighted value obtains product, then, and with the data to decode addition of product with the decoding failure that receives before; Wherein, merge the ratio of weighted value greater than the code check of the data to decode of the code check of data retransmission and decoding failure.
103, the data to decode after upgrading is deciphered.
Receiving terminal is deciphered the data to decode after upgrading, and obtains the information in the data to decode, and carries out associative operation based on corresponding information.
The method that the automatic request retransmission of the adaptive weighted mixing that the embodiment of the invention provides merges; Receiving terminal is after receiving data to decode; Confirm at first whether these data are data retransmission; If these data are data retransmission, then with this data retransmission and after merging multiplied by weight, with the data to decode addition of the corresponding decoding failure that receives before; Data to decode is revised as the data after the addition, merges the ratio of weighted value greater than the code check of the data to decode of the code check of data retransmission and decoding failure.
After adopting such scheme; Since data retransmission with the data to decode addition of corresponding decoding failure before; With merge multiplied by weight, make that the proportion of data retransmission increases in the data to decode after addition, and then increased the decoding success rate of the data to decode after the addition.
As a kind of improvement of embodiment, present embodiment provides the another kind of adaptive weighted mixing method that automatic request retransmission merges, and is as shown in Figure 2, may further comprise the steps:
201, receive data to decode, and calculate the code check of the data to decode that receives.
A kind of execution mode as present embodiment; Receiving terminal is after receiving data to decode; The cyclic buffer that at first data to decode the is read in receiving terminal accumulation process that circulates, the data in data after the processing and the HARQ buffer memory merge, if just pass data; Data in the HARQ buffer memory are 0, are equivalent to not merge; Data that afterwards HARQ merged or just pass data and decipher; If decoding failure then is saved in this HARQ merging data in the HARQ buffer memory and replaces legacy data.
The code check of data to decode is raw information and the number of bits of CRC and the ratio of the maximal bit figure place that channel can carry of this data to decode.Under the certain prerequisite of number of bits that channel can carry, the number of bits of the raw information of data is many more, and then the code check of these data is big more; The number of bits of data is few more, and then the code check of these data is more little.
Concrete; The number of bits of the data that receiving terminal receives is the maximal bit figure place that current channel can carry; If the number of bits of data waiting for transmission is less than the maximal bit figure place that can carry, then transmitting terminal can repeat to send data to be transmitted, up to reaching the maximum that channel can carry.Receiving terminal can add up the data of the repetition that receives after receiving all data.
Therefore; Under the certain prerequisite of maximal bit figure place that channel can carry; The number of bits of the data of Channel Transmission is few more, and the code check of these data is more little, and promptly these data shared ratio in the maximal bit position that channel can carry is few more; The number of times that these data repeat in the maximal bit position that channel can carry is many more, and is many more at the number of times of this data accumulation of receiving terminal; The data bit figure place is many more, and the code check of these data is big more, and promptly these data shared ratio in the maximal bit position that channel can carry is big more, and the number of times that these data repeat in the maximal bit position that channel can carry is few more, and is few more at the number of times of this data accumulation of receiving terminal.
Further optional, according to formula
(i=0,1,2,3 ...) calculate the code check of the data to decode receive, wherein, R
iCode check for data retransmission; G
iWhen being used to transmit pending data, the maximal bit figure place that channel can carry; CRC is a CRC; A is the number of bits of the raw information before the data to decode coding; I is the label of transmission data, and the value of i is the integer more than or equal to 1.
Present embodiment does not limit the computational methods of code check, can be provided with according to actual needs, repeats no more at this.
202, judge whether the current data to decode that receives is data retransmission.
The data that receiving terminal receives for the first time can be called biography data just, become data retransmission in the first corresponding data that receive after the data that pass, and when receiving after the legend data, just pass the data to decode that data are decoding failure.
Receiving terminal is at first deciphered data after receiving data; If decoding failure, then receiving terminal sends the data re-transmission request to transmitting terminal; Transmitting terminal sends data retransmission to transmitting terminal after receiving the data re-transmission request, data retransmission is subordinated to same packet with the first data that pass; If receiving terminal is deciphered still failure to data after receiving data retransmission, then continue to send the data re-transmission request to transmitting terminal, receive data retransmission, till receiving terminal decoding success or reaching maximum retransmission.
Therefore, the data that receive of receiving terminal can comprise: just pass data, data retransmission.
In order to make place mat, receive data to decode, and judge whether the current data to decode that receives is data retransmission for subsequent step.
Concrete, if the current data to decode that receives is a data retransmission, then execution in step 203; If the current data to decode that receives is not a data retransmission, then execution in step 205.
203,, calculate and merge weighted value according to the ratio of the code check of the data to decode of the code check of data retransmission and decoding failure.
In order to lay the groundwork for subsequent step, receiving terminal is according to the ratio of the code check of the data to decode of the code check of data retransmission and decoding failure, calculates to merge weighted value.Merge the ratio of weighted value greater than the code check of the data of the code check of data retransmission and decoding failure.
Further optional, according to formula
(i=1,2,3 ...) calculate the merging weighted value, wherein, W
iFor merging weighted value; R
I-1Code check for the data to decode of decoding failure; R
iCode check for data retransmission; Amp (Amp>=1) is a constant; I is the label of transmission data, and the value of i is the integer more than or equal to 1.
As a kind of execution mode of present embodiment, the span of Amp can for: more than or equal to 1 and smaller or equal to 2.
As a kind of preferred implementation of present embodiment, this programme is applied in the scene of data retransmission code check greater than the data to decode code check of decoding failure.Present embodiment also can be applicable in other scene, but can not improve the decoding success rate of receiving terminal.
Therefore, above-mentioned in the formula that this step provides,
After multiplying each other with Amp (Amp>=1), guarantee W
iAlso greater than
Promptly greater than the ratio of the code check of the data to decode of the code check of data retransmission and decoding failure.
Further optional, merge weighted value and obtain through searching predetermined weights value record table.
Present embodiment does not limit the value of Amp, can be provided with according to actual needs, repeats no more at this.
Present embodiment does not limit the weighted value record sheet, can be provided with according to actual needs, repeats no more at this.
204, with data retransmission with merge weighted value and multiply each other and obtain product, the data to decode addition of product and the decoding failure that receives is before obtained the data after the addition, data to decode is updated to the data after the addition.
This programme increases the decoding success rate of receiving terminal through AMC technology and HARQ technology, and it is more reliable than just passing data to think data retransmission, in the HARQ merging process, suitably adjusts the proportion of data retransmission, helps improving deciphering probability of successful.
Concrete, when the channel condition that transmits data to decode was good, transmitting terminal sent the data flow of high modulation mode, high code check; If the data decoding failure of receiving terminal to receiving explains that this channel condition is undesirable, then transmitting terminal is when sending data retransmission, and transmitting terminal then sends the data flow of low modulation mode, low code check.After making that the data to decode of data retransmission and decoding failure merges, the decoding probability of successful is bigger.
In order to adjust the proportion in the data to decode of data retransmission after addition; Before carrying out sum operation; Earlier data retransmission being multiplied each other with the merging weighted value obtains product, then, and with the data to decode addition of product with the decoding failure that receives before; Wherein, merge the ratio of weighted value greater than the code check of the data to decode of the code check of data retransmission and decoding failure.Like this, just adjustable bulk wight passes the proportion of data in new data to decode, has improved the success rate of receiving terminal decoding simultaneously.
205, the data to decode after upgrading is deciphered.
Receiving terminal is deciphered the data to decode after upgrading, and obtains the information in the data to decode, and carries out associative operation based on corresponding information.
The device that the automatic request retransmission of the adaptive weighted mixing that the embodiment of the invention provides merges; Receiving terminal confirms at first whether these data are data retransmission, if these data are data retransmission after receiving data to decode; Then with this data retransmission and after merging multiplied by weight; With the data to decode addition of the corresponding decoding failure that receives before, data to decode is updated to the data after the addition, merge the ratio of weighted value greater than the code check of the data of the code check of data retransmission and decoding failure; Data to decode to after upgrading is deciphered.
After adopting such scheme; Since data retransmission with the data to decode addition of decoding failure before; With merge multiplied by weight, make that the proportion of data retransmission increases in the data to decode after addition, and then increased the decoding success rate of the data to decode after the addition.
According to formula
(i=1; 2; 3 ...) calculate the merging weighted value, the code check relation when fully taking into account each data of transmission; Can revise according to the code check value of reality and merge weighted value; Make after data retransmission and the merging multiplied by weight, can not make the proportion of data retransmission in data to decode less than normal, but increase the decoding success rate of receiving terminal data to decode.
Present embodiment provides a kind of adaptive weighted mixing device that automatic request retransmission merges, and is as shown in Figure 3, comprising: receiving element 31, merge cells 32, decoding unit 33.
Receiving element 31 is used to receive data retransmission.
Merge cells 32; Be used for data retransmission with merge weighted value and multiply each other and obtain product; The data to decode addition of product and the decoding failure that receives is before obtained the data after the addition; Data to decode is updated to the data after the addition, merges the ratio of weighted value greater than the code check of the data to decode of the code check of data retransmission and decoding failure.
Decoding unit 33 is used for the data to decode after upgrading is deciphered.
The device that the automatic request retransmission of the adaptive weighted mixing that the embodiment of the invention provides merges, receiving element receives data retransmission; Merge cells is with data retransmission and after merging multiplied by weight; Data to decode addition with the decoding failure that receives before; Data to decode is updated to the data after the addition, merges the ratio of weighted value greater than the code check of the data to decode of the code check of data retransmission and decoding failure; Decoding unit is deciphered the data to decode after upgrading.
After adopting such scheme; Since data retransmission with the data to decode addition of decoding failure before; With merge multiplied by weight, make that the proportion of data retransmission increases in the data to decode after addition, and then increased the decoding success rate of the data to decode after the addition.
As a kind of improvement of embodiment, present embodiment provides the another kind of adaptive weighted mixing device that automatic request retransmission merges, and is as shown in Figure 4, comprising: receiving element 41, computing unit 42, merge cells 43, decoding unit 44.
Concrete, computing unit 42 comprises: computing module 421.
Receiving element 41 is used to receive data retransmission.
The data that receiving terminal receives for the first time claim to be called biography data just, become data retransmission in the first corresponding data that receive after the data that pass, and when receiving after the legend data, just pass the data to decode that data are decoding failure.
In order to make place mat for subsequent step, receiving element receives data retransmission.
In order to lay the groundwork for subsequent step, computing unit is according to the ratio of the code check of the data to decode of the code check of data retransmission and decoding failure, calculates to merge weighted value.Merge the ratio of weighted value greater than the code check of the data to decode of the code check of data retransmission and decoding failure.
Further optional; Computing module is according to the ratio of the code check of the data to decode of the code check of data retransmission and decoding failure, calculates to merge weighted value and be: computing module calculates according to formula
and merges weighted value.
Wherein, W
iFor merging weighted value; R
I-1Code check for the data to decode of decoding failure; R
iFor label is the code check of data retransmission; Amp is the constant more than or equal to 1; I is the label of transmission data, and the value of i is the integer more than or equal to 1.
As a kind of preferred implementation of present embodiment, the span of Amp can for: more than or equal to 1 and smaller or equal to 2.
Further optional, in merge cells 43, merge weighted value and obtain through searching predetermined weights value record table.
As a kind of preferred implementation of present embodiment, this programme is applied in the scene of data retransmission code check greater than the data bit rate of decoding failure.
Present embodiment does not limit value and the span of Amp, can set according to actual needs, repeats no more at this.
Merge cells 43; Be used for data retransmission with merge weighted value and multiply each other and obtain product; The data to decode addition of product and the decoding failure that receives is before obtained the data after the addition; Data to decode is updated to the data after the addition, merges the ratio of weighted value greater than the code check of the data to decode of the code check of data retransmission and decoding failure.
This programme increases the decoding success rate of receiving terminal through AMC technology and HARQ technology, and it is more reliable than just passing data to think data retransmission, in the HARQ merging process, suitably adjusts the proportion of data retransmission, helps improving deciphering probability of successful.
Concrete, when the channel condition that transmits data to decode was good, transmitting terminal sent the data flow of high modulation mode, high code check; If receiving terminal merges failure to the automatic request retransmission of the adaptive weighted mixing that receives, explain that this channel condition is undesirable, then transmitting terminal is when sending data retransmission, and transmitting terminal then sends the data flow of low modulation mode, low code check.After making that the data to decode of data retransmission and decoding failure merges, the decoding probability of successful is bigger.
Decoding unit 44 is used for the data to decode after upgrading is deciphered.
Decoding unit is deciphered the data to decode after upgrading, and obtains the information in the data to decode, and carries out associative operation based on corresponding information.
The device that the automatic request retransmission of the adaptive weighted mixing that the embodiment of the invention provides merges, receiving element receives data retransmission; Merge cells is with this data retransmission and after merging multiplied by weight; Data to decode addition with the decoding failure that receives before; Data to decode is updated to the data after the addition, merges the ratio of weighted value greater than the code check of the data of the code check of data retransmission and decoding failure; Decoding unit is deciphered the data to decode after upgrading.
After adopting such scheme; Since data retransmission with the data to decode addition of decoding failure before; With merge multiplied by weight, make that the proportion of data retransmission increases in the data to decode after addition, and then increased the decoding success rate of the data to decode after the addition.
Computing unit is according to formula
(i=1; 2; 3 ...) calculate the merging weighted value, the code check relation when fully taking into account each data of transmission; Can revise according to the code check value of reality and merge weighted value; Make after data retransmission and the merging multiplied by weight, can not make the proportion of data retransmission in data to decode less than normal, but increase the decoding success rate of receiving terminal data to decode.The device of present embodiment Fig. 3 and Fig. 4 can adopt logical integrated circuit to realize.
Through the description of above execution mode, the those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential common hardware, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding; The part that technical scheme of the present invention contributes to prior art in essence in other words can be come out with the embodied of software product, and this computer software product is stored in the storage medium that can read, like the floppy disk of computer; Hard disk or CD etc.; Comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by said protection range with claim.
Claims (10)
1. the method that the automatic request retransmission of adaptive weighted mixing merges is characterized in that,
Receive data retransmission;
With said data retransmission with merge weighted value and multiply each other and obtain product; The data to decode addition of said product and the decoding failure that receives is before obtained the data after the addition; Said data to decode is updated to the data after the addition, and said merging weighted value is greater than the ratio of the code check of the data to decode of the code check of said data retransmission and said decoding failure;
Said data to decode to after upgrading is deciphered.
2. the method that the automatic request retransmission of adaptive weighted mixing according to claim 1 merges is characterized in that, said with said data retransmission with merge before multiplied by weight obtains product, said method comprises:
Ratio according to the code check of the data to decode of the code check of said data retransmission and said decoding failure calculates said merging weighted value.
3. the method that the automatic request retransmission of adaptive weighted mixing according to claim 2 merges is characterized in that, the ratio of the code check of the data to decode of said code check and said decoding failure according to said data retransmission calculates said merging weighted value and comprises:
According to formula
Calculate said merging weighted value, wherein, W
iBe said merging weighted value; R
I-1Code check for the data to decode of said decoding failure; R
iCode check for said data retransmission; Amp is the constant more than or equal to 1; I is the label of transmission data, and the value of i is the integer more than or equal to 1.
4. the method that the automatic request retransmission of adaptive weighted mixing according to claim 3 merges is characterized in that said Amp is the constant smaller or equal to 2.
5. the method that the automatic request retransmission of adaptive weighted mixing according to claim 1 merges is characterized in that, said merging weighted value obtains through searching predetermined weights value record table.
6. the device that the automatic request retransmission of adaptive weighted mixing merges is characterized in that,
Receiving element is used to receive data retransmission;
Merge cells; Be used for said data retransmission with merge weighted value and multiply each other and obtain product; The data to decode addition of said product and the decoding failure that receives is before obtained the data after the addition; Said data to decode is updated to the data after the addition, and said merging weighted value is greater than the ratio of the code check of the data to decode of the code check of said data retransmission and said decoding failure;
Decoding unit is used for the said data to decode after upgrading is deciphered.
7. the device that the automatic request retransmission of adaptive weighted mixing according to claim 6 merges is characterized in that said device also comprises:
Computing unit is used for the ratio according to the code check of the data to decode of the code check of said data retransmission and said decoding failure, calculates said merging weighted value.
8. the device that the automatic request retransmission of adaptive weighted mixing according to claim 7 merges is characterized in that said computing unit comprises:
Computing module is used for according to formula
Calculate said merging weighted value, wherein, W
iBe said merging weighted value; R
I-1Code check for the data to decode of said decoding failure; R
iCode check for said data retransmission; Amp is the constant more than or equal to 1; I is the label of transmission data, and the value of i is the integer more than or equal to 1.
9. the device that the automatic request retransmission of adaptive weighted mixing according to claim 8 merges is characterized in that said Amp is the constant smaller or equal to 2.
10. the device that the automatic request retransmission of adaptive weighted mixing according to claim 6 merges is characterized in that, in said merge cells, said merging weighted value obtains through searching predetermined weights value record table.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105227274A (en) * | 2014-06-26 | 2016-01-06 | 深圳市中兴微电子技术有限公司 | Retransmit merging method and device |
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| CN105227274A (en) * | 2014-06-26 | 2016-01-06 | 深圳市中兴微电子技术有限公司 | Retransmit merging method and device |
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| CN105827374B (en) * | 2016-03-21 | 2019-11-12 | 华为技术有限公司 | A kind of data decoding method and equipment |
| CN111837342A (en) * | 2018-03-14 | 2020-10-27 | 赛普拉斯半导体公司 | Bit error correction for wireless retransmission communication systems |
| CN111837342B (en) * | 2018-03-14 | 2021-09-10 | 赛普拉斯半导体公司 | Bit error correction for wireless retransmission communication systems |
| US11283543B2 (en) | 2018-03-14 | 2022-03-22 | Cypress Semiconductor Corporation | Bit error correction for wireless retransmission communications systems |
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