CN102638326A - Method and device for judging decoding reliability - Google Patents
Method and device for judging decoding reliability Download PDFInfo
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- CN102638326A CN102638326A CN2011100379796A CN201110037979A CN102638326A CN 102638326 A CN102638326 A CN 102638326A CN 2011100379796 A CN2011100379796 A CN 2011100379796A CN 201110037979 A CN201110037979 A CN 201110037979A CN 102638326 A CN102638326 A CN 102638326A
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- H—ELECTRICITY
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
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Abstract
The invention provides a method and a device for judging decoding reliability. The method comprises the following steps of: performing relevant operation on data required to be decoded, and outputting decoding data, a maximum peak value and a secondary peak value after relevant operation; calculating a reliability factor according to the maximum peak value, the secondary peak value and the average power of the data required to be decoded; and comparing the reliability factor with a preset threshold value to determine the reliability of the decoded data according to a comparison result. In the method, the reliability of the decoding data is further judged by adopting the maximum peak value and the secondary peak value after relevant operation, so that the problem of reliability judgment of decoded information is solved, and the reliability and effectiveness of decoded information are ensured.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of reliability of decode determination methods and device.
Background technology
LTE (Long Term Evolution, Long Term Evolution) receives the favor of mobile communication industry always.Along with the development of LTE technology, increasing world-leading operator faces the future LTE one after another as network evolution direction, equipment manufacturers have also strengthened the input in the LTE field one after another, thereby have promoted constantly advancing of LTE.Compare with 3G, LTE has following technical characterictic: (1) traffic rate improves, and descending peak rate is 100Mbps, last behavior 50Mbps; (2) spectrum efficiency improves; (3) QoS guarantees, guarantees the service quality of real time business (like VoIP) through system design and strict QoS mechanism; (4) reduce the wireless network time delay, subframe lengths 0.5ms and 0.675ms have solved backward compatible problem, and have reduced network delay; (5) increased the cell boarder bit rate, kept increasing cell boarder bit rate etc. under the constant situation of present base station location.
The physical channel of LTE system mainly comprises Traffic Channel and control channel; Wherein for the feedback information ACK/NACK of downlink traffic channel at ascending control channel PUCCH (Physical Uplink Control Channel; Be called for short PUCCH) or upward transmission of reverse link traffic channel PUSCH (Physical Uplink Shared Channel is called for short PUSCH); Channel quality information CQI (Channel Quality Indication is called for short CQI) also transmits on PUCCH or PUSCH.At present, for control information, there are not correct judgment or error at receiving terminal.If the control information that receiving terminal is deciphered out is wrong, may causes problems such as MAC (Media Access Control, medium access control) layer scheduling mistake, and then possibly cause throughput of system to descend.
In signal processing, receiving terminal need be deciphered out the information of transmitting terminal.Because channel fading, the time factors such as offset frequency is inclined to one side existence, the information of deciphering out might not be the information that transmitting terminal sends.Can judge whether the information of deciphering out is correct through the CRC position for Traffic Channel; But do not have check digit to judge whether decoding is correct for control information, how receiving terminal judges whether it reliably is the problem of a key to the control information of deciphering out so.
For control information, the scheme of receiving terminal decoding has a lot, wherein common a kind ofly is: receiving terminal is deciphered the information that transmitting terminal sends according to largest peaks then through asking relevant operation (promptly passing through related operation).Whether effectively reliable for asking relevant decoding scheme, how to judge the information of deciphering out so, effective solution is not proposed at present as yet.
Summary of the invention
Main purpose of the present invention is to provide a kind of determination methods and device of reliability of decode, to solve the above-mentioned whether reliable and effective problem of the information deciphered out of how judging at least.
According to an aspect of the present invention, a kind of reliability of decode determination methods is provided, has comprised: the data to need decoding are carried out related operation, and decoding data, peak-peak and minor peaks behind the output related operation; According to peak-peak and minor peaks and need the average power of the data of decoding to calculate reliability factor; Reliability factor and preset threshold value are compared, confirm the reliability of decoding data according to comparative result.
Further, according to peak-peak and minor peaks and need the average power of the data of decoding to calculate before the reliability factor, also comprise: the average power of calculating the data that need decoding.
Further, the computing formula of average power is:
Wherein, Pow is the average power that needs the data of decoding, a
iBe the data of need decoding, N is the length of data.
Further; The computing formula of reliability factor is:
wherein; D is a reliability factor; Peak is a peak-peak, and SecPeak is a minor peaks.
Further; Reliability factor and preset threshold value are compared, confirm to comprise the reliability of decoding data: reliability factor and threshold value are compared according to comparative result; If reliability factor, confirms then that decoding data is reliable more than or equal to threshold value; Otherwise, confirm that then decoding data is unreliable.
According to a further aspect in the invention, a kind of reliability of decode judgment means is provided, has comprised: the related operation module, be used for the data of need decoding are carried out related operation, and decoding data, peak-peak and minor peaks behind the output related operation; The reliability factor computing module is used for the average power calculating reliability factor according to the data of peak-peak and minor peaks and need decoding; The reliability judge module is used for reliability factor and preset threshold value are compared, and confirms the reliability of decoding data according to comparative result.
Further, the reliability of decode judgment means also comprises: power computation module is used to calculate the average power of the data that need decoding.
Further, the computing formula of average power is:
Wherein, Pow is the average power that needs the data of decoding, a
iBe the data of need decoding, N is the length of data.
Further; The computing formula of reliability factor is:
wherein; D is a reliability factor; Peak is a peak-peak, and SecPeak is a minor peaks.
Further, the reliability judge module also is used for: reliability factor and threshold value are compared, if reliability factor, confirms then that decoding data is reliable more than or equal to threshold value; Otherwise, confirm that then decoding data is unreliable.
Through the present invention, the reliability that adopts peak-peak and minor peaks behind the related operation further to judge decoding data has solved the reliability decision problem of the information of deciphering out, thereby the information that has guaranteed to decipher out is reliable effective.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the determination methods flow chart according to the reliability of decode of the embodiment of the invention;
Fig. 2 is the judgment means sketch map according to the reliability of decode of the embodiment of the invention;
Fig. 3 is the determination methods sketch map according to the reliability of decode of the embodiment of the invention one; And
Fig. 4 is the determination methods sketch map according to the reliability of decode of the embodiment of the invention two.
Embodiment
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Fig. 1 is the determination methods flow chart according to the reliability of decode of the embodiment of the invention, and is as shown in Figure 1, may further comprise the steps:
Step S102 carries out related operation to the data of need decoding, and decoding data, peak-peak and minor peaks behind the output related operation.
Step S104 is according to peak-peak and minor peaks and need the average power of the data of decoding to calculate reliability factor.
Step S106 compares reliability factor and preset threshold value, confirms the reliability of decoding data according to comparative result.
In said method, the reliability through the peak-peak and the minor peaks that adopt behind the related operation come further to judge decoding data has solved the reliability decision problem of the information of deciphering out, thereby the information that has guaranteed to decipher out is reliable effective.
Wherein, before step S104, also comprise: calculate the average power of the data that need decoding, the computing formula of average power is:
Wherein, Pow is the average power that needs the data of decoding, a
iBe the data of need decoding, N is the length of data.
Wherein, In step S104; The computing formula of reliability factor is:
wherein; D is a reliability factor, and Peak is a peak-peak, and SecPeak is a minor peaks.
Wherein, in step S104, reliability factor and threshold value are compared, if reliability factor, confirms then that decoding data is reliable more than or equal to threshold value; Otherwise, confirm that then decoding data is unreliable.
Fig. 2 is the judgment means sketch map according to the reliability of decode of the embodiment of the invention, and is as shown in Figure 2, and this device comprises: related operation module 10, reliability factor computing module 20 and reliability judge module 30.
Wherein, related operation module 10 is used for the data of need decoding are carried out related operation, and decoding data, peak-peak and minor peaks behind the output related operation; Reliability factor computing module 20 is used for the average power calculating reliability factor according to the data of peak-peak and minor peaks and need decoding; Reliability judge module 30 is used for reliability factor and preset threshold value are compared, and confirms the reliability of decoding data according to comparative result.
In said apparatus, the reliability through the peak-peak and the minor peaks that adopt behind the related operation come further to judge decoding data has solved the reliability decision problem of the information of deciphering out, thereby the information that has guaranteed to decipher out is reliable effective.
Wherein, said apparatus also comprises power computation module, and power computation module is used to calculate the average power of the data that need decoding, and the computing formula of average power is:
Wherein, Pow is the average power that needs the data of decoding, a
iBe the data of need decoding, N is the length of data.
Wherein, The computing formula of reliability factor is:
wherein; D is a reliability factor; Peak is a peak-peak, and SecPeak is a minor peaks.
Wherein, the reliability deterministic process of reliability judge module 30 is: reliability factor and threshold value are compared, if reliability factor, confirms then that decoding data is reliable more than or equal to threshold value; Otherwise, confirm that then decoding data is unreliable.
Embodiment one
In the LTE system; When feedback information HAQR-ACK is a multiplexer mode; And be multiplexing on reverse link traffic channel the time; If the bit number of feedback information during greater than 2 bits, then is can adopt the RM coding to information bit making a start so, need carry out RM decoding to the feedback information of transmission at receiving terminal accordingly.Possibly send feedback information because make a start, also possibly not send feedback information, therefore need the HAQR-ACK data after receiving terminal is deciphered RM to carry out the reliability judgement, if be judged to reliably, then thinking makes a start has sent HAQR-ACK really; If it is unreliable to be judged to, then thinking makes a start does not send HAQR-ACK.
Fig. 3 is the determination methods sketch map according to the reliability of decode of the embodiment of the invention one, and is as shown in Figure 3, may further comprise the steps:
Step S302 calculates the data (a that waits to send into the RM decoding module
1..., a
N, wherein N is the length of data) average power Pow, concrete computing formula does;
Step S304 is to sending into the data a of related operation module
1..., a
NAfter carrying out RM decoding, output decoding data b
1..., b
L, wherein L is the length of decoding data, and the peak-peak Peak and the minor peaks Peak that obtain in the output RM decode procedure;
Step S306; Utilize the data average power Pow of peak-peak Peak and minor peaks Peak and step S302; The computed reliability factor D, concrete computing formula is following:
Step S308 compares reliability factor D and given threshold value thresh, if D, thinks then that decoding data is HARQ-ACK information really more than or equal to given threshold value thresh; Do not send HARQ-ACK information otherwise thinking makes a start.
Embodiment two
In the LTE system, when transmission of channel quality information on ascending control channel, then be that the channel quality information bit is adopted the RM coding making a start, need dock the breath of collecting mail at receiving terminal accordingly and carry out RM decoding and obtain channel quality information.Because carry out smothing filtering for channel quality information, promptly utilize history value to come the level and smooth current channel quality information of deciphering out through the mode of weighting, if the current information of deciphering out is reliable, can strengthen the weight of current decoding information so; If the current information of deciphering out is unreliable, can reduce the weight of current decoding information so.Through judging the reliability of current decoding information, Fig. 4 is the determination methods sketch map according to the reliability of decode of the embodiment of the invention two, and is as shown in Figure 4, may further comprise the steps:
Step S402 calculates the data (a that waits to send into the RM decoding module
1..., a
N, wherein N is the length of data) average power Pow, concrete computing formula does;
Step S404 is to sending into the data a of related operation module
1..., a
NAfter carrying out RM decoding, output decoding data b
1..., b
L, wherein L is the length of decoding data, and the peak-peak Peak and the minor peaks Peak that obtain in the output RM decode procedure;
Step S406; Utilize the data average power Pow of peak-peak Peak and the minor peaks Peak and the first step; The computed reliability factor D, concrete computing formula is following:
Step S408 compares reliability factor D and given threshold value thresh, if D, thinks then that deciphering out channel quality information is that the reliability mark is changed to 1 so, i.e. Flag=1 reliably more than or equal to given threshold value thresh; Otherwise think that it is insecure deciphering out channel quality information, the reliability mark is changed to 0 so, i.e. Flag=0.
Step S410, according to reliability sign Flag, the weight factor during adaptive selection filtering.
In above-mentioned enforcement of the present invention; For the decoding data that carries out after related operation is operated; The reliability of utilizing peak-peak and minor peaks behind the related operation further to judge decoding data; Solved the reliability decision problem of the information of deciphering out in the prior art, thereby the information that has guaranteed to decipher out is effectively reliable.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, and in some cases, can carry out step shown or that describe with the order that is different from here by calculation element; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a reliability of decode determination methods is characterized in that, comprising:
Data to need decoding are carried out related operation, and decoding data, peak-peak and minor peaks behind the output related operation;
According to said peak-peak and said minor peaks and need the average power of the data of decoding to calculate reliability factor;
Reliability factor and preset threshold value are compared, confirm the reliability of said decoding data according to comparative result.
2. method according to claim 1 is characterized in that, according to said peak-peak and said minor peaks and need the average power of the data of decoding to calculate before the reliability factor, also comprises:
Calculate the said average power that needs the data of decoding.
3. method according to claim 2 is characterized in that, the computing formula of said average power is:
Wherein, Pow is the average power that needs the data of decoding, a
iBe the data of need decoding, N is the length of data.
4. method according to claim 3 is characterized in that, the computing formula of said reliability factor is:
Wherein, D is a reliability factor, and Peak is a peak-peak, and SecPeak is a minor peaks.
5. method according to claim 4 is characterized in that, reliability factor and preset threshold value are compared, and confirms to comprise the reliability of said decoding data according to comparative result:
Said reliability factor and said threshold value are compared, if said reliability factor, confirms then that said decoding data is reliable more than or equal to said threshold value; Otherwise, confirm that then said decoding data is unreliable.
6. a reliability of decode judgment means is characterized in that, comprising:
The related operation module is used for the data of need decoding are carried out related operation, and decoding data, peak-peak and minor peaks behind the output related operation;
The reliability factor computing module is used for the average power calculating reliability factor according to the data of said peak-peak and said minor peaks and need decoding;
The reliability judge module is used for reliability factor and preset threshold value are compared, and confirms the reliability of said decoding data according to comparative result.
7. device according to claim 6 is characterized in that, also comprises:
Power computation module is used to calculate the said average power that needs the data of decoding.
8. device according to claim 7 is characterized in that, the computing formula of said average power is:
Wherein, Pow is the average power that needs the data of decoding, a
iBe the data of need decoding, N is the length of data.
9. device according to claim 8 is characterized in that, the computing formula of said reliability factor is:
Wherein, D is a reliability factor, and Peak is a peak-peak, and SecPeak is a minor peaks.
10. device according to claim 9 is characterized in that, the reliability judge module also is used for:
Said reliability factor and said threshold value are compared, if said reliability factor, confirms then that said decoding data is reliable more than or equal to said threshold value; Otherwise, confirm that then said decoding data is unreliable.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110037979.6A CN102638326B (en) | 2011-02-14 | 2011-02-14 | Method and device for judging decoding reliability |
| PCT/CN2011/073193 WO2012109817A1 (en) | 2011-02-14 | 2011-04-22 | Method and device for judging reliability of decoding |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110037979.6A CN102638326B (en) | 2011-02-14 | 2011-02-14 | Method and device for judging decoding reliability |
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| CN102638326A true CN102638326A (en) | 2012-08-15 |
| CN102638326B CN102638326B (en) | 2015-07-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110971241A (en) * | 2019-11-26 | 2020-04-07 | 小唐科技（上海）有限公司 | RM decoding result reliability judging method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1054342A (en) * | 1990-02-20 | 1991-09-04 | 哈尔滨工业大学 | The Longest Linear Shift Register Sequence Instruction Coding Method for Remote Control System |
| CN1507161A (en) * | 2002-11-27 | 2004-06-23 | 日本电气株式会社 | Radio base station arrangement and decoding apparatus and decoding method used thereof |
| CN1697439A (en) * | 2004-05-10 | 2005-11-16 | 朗迅科技公司 | Peak-to-average power ratio control |
| CN101001128A (en) * | 2006-06-22 | 2007-07-18 | 华为技术有限公司 | Method and equipment for detecting reliability of decode |
| WO2009151468A1 (en) * | 2008-06-13 | 2009-12-17 | Qualcomm Incorporated | Reducing harq retransmissions using peak power management techniques |
-
2011
- 2011-02-14 CN CN201110037979.6A patent/CN102638326B/en not_active Expired - Fee Related
- 2011-04-22 WO PCT/CN2011/073193 patent/WO2012109817A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1054342A (en) * | 1990-02-20 | 1991-09-04 | 哈尔滨工业大学 | The Longest Linear Shift Register Sequence Instruction Coding Method for Remote Control System |
| CN1507161A (en) * | 2002-11-27 | 2004-06-23 | 日本电气株式会社 | Radio base station arrangement and decoding apparatus and decoding method used thereof |
| CN1697439A (en) * | 2004-05-10 | 2005-11-16 | 朗迅科技公司 | Peak-to-average power ratio control |
| CN101001128A (en) * | 2006-06-22 | 2007-07-18 | 华为技术有限公司 | Method and equipment for detecting reliability of decode |
| WO2009151468A1 (en) * | 2008-06-13 | 2009-12-17 | Qualcomm Incorporated | Reducing harq retransmissions using peak power management techniques |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110971241A (en) * | 2019-11-26 | 2020-04-07 | 小唐科技（上海）有限公司 | RM decoding result reliability judging method and device |
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| Publication number | Publication date |
|---|---|
| CN102638326B (en) | 2015-07-22 |
| WO2012109817A1 (en) | 2012-08-23 |
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