System and method for transmission format detection
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H03D-001/00
H04L-027/06
출원번호
UP-0484232
(2006-07-10)
등록번호
US-7656972
(2010-03-31)
발명자
/ 주소
Willenegger, Serge
출원인 / 주소
QUALCOMM Incorporated
대리인 / 주소
Mobarhan, Ramin
인용정보
피인용 횟수 :
3인용 특허 :
12
초록▼
A system and method for detecting a correct transmission format upon encountering a decoding error in a variable-format transmission scheme, wherein the decoding error results from an unsuccessful decoding of a frame. The invention provides for prioritizing the permissible formats, resulting in a pr
A system and method for detecting a correct transmission format upon encountering a decoding error in a variable-format transmission scheme, wherein the decoding error results from an unsuccessful decoding of a frame. The invention provides for prioritizing the permissible formats, resulting in a prioritized order. The frame data is then decoded according to one or more of the permissible formats in the prioritized order, and if the decoding is successful in accordance with one of the formats, that format is selected as the correct transmission format.
대표청구항▼
The invention claimed is: 1. A method for detecting a correct transmission format upon encountering a decoding error in a variable-format transmission scheme, wherein the decoding error results from an unsuccessful decoding of a frame including data, comprising: using a processor for prioritizing a
The invention claimed is: 1. A method for detecting a correct transmission format upon encountering a decoding error in a variable-format transmission scheme, wherein the decoding error results from an unsuccessful decoding of a frame including data, comprising: using a processor for prioritizing a plurality of permissible formats, resulting in a prioritized order; and decoding the data according to one or more of said permissible formats in said prioritized order, wherein said permissible formats are transport format combinations (TFC); and if said decoding according to one of said permissible formats is successful, selecting the corresponding permissible format as the correct transmission format. 2. The method of claim 1, wherein said prioritizing comprises: determining a metric for each of said plurality of permissible formats; and ordering said permissible formats according to said metric to form said prioritized order. 3. The method of claim 2, wherein the frame further includes a format indication corresponding to a first format, wherein said metric are a function of historical format data. 4. The method of claim 3, wherein said historical format data comprises the number of occurrences of said permissible formats during a first time interval. 5. The method of claim 2, wherein said determining a metric comprises: tracking a number of occurrences corresponding to each of said permissible formats over a first time interval; and calculating said metric using said number of occurrences of the corresponding permissible format. 6. The method of claim 5, wherein said first time interval ends prior to the unsuccessful decoding of the frame. 7. The method of claim 2, wherein the frame is one of a plurality of frames transmitting a block of data, wherein each of said metric is at least a function of the number of occurrences of the corresponding permissible format over said block of data. 8. The method of claim 7, wherein the frame includes a plurality of sub-channels, wherein a transport format combination indicator is associated with each of said plurality of frames, and wherein each of said metric is further a function of said transport format combination indicators. 9. The method of claim 2, wherein said decoding comprises decoding the data according to each of said permissible formats in said prioritized order until the data is correctly decoded, or until said permissible formats have been exhausted. 10. The method of claim 9, wherein only those permissible formats having a metric within a first range are included in said prioritized order. 11. The method of claim 2, wherein said decoding comprises partially decoding the data until it can be determined whether said decoding is successful. 12. A method for decoding data upon encountering a transmission error in a variable-format transmission scheme, wherein the error results from an unsuccessful decoding of a frame including data, comprising: determining a metric for each of a plurality of permissible formats; using a processor for prioritizing said permissible formats according to said metric, resulting in a prioritized order, wherein said permissible formats are transport format combinations (TFC); and decoding the data according to one or more of said permissible formats in said prioritized order. 13. The method of claim 12, wherein said decoding comprises decoding the data according to each of said permissible formats in said prioritized order until the data is correctly decoded, or until said permissible formats have been exhausted. 14. The method of claim 13, wherein said decoding further comprises reporting an error to an upper application layer upon exhausting said permissible formats. 15. A remote station apparatus comprising: a receiver for receiving a frame, wherein said frame includes data; and a processor for determining a metric for each of a plurality of permissible formats upon the unsuccessful decoding of said frame, wherein said plurality of permissible formats are transport format combinations (TFC); and wherein the receiver decodes said data according to one or more of said plurality of permissible formats in order of said metric, and if said decoding is successful, for selecting the corresponding permissible format as the correct transmission format. 16. The apparatus of claim 15, wherein said frame further includes a received format indication, wherein a permissible format indication corresponds to each of said plurality of permissible formats, and wherein said processor projects a first code word representing said received format indication onto a Hadamard space, wherein said Hadamard space includes code word vectors representing a plurality of permissible format indications. 17. The apparatus of claim 15, wherein said processor tracks a number of occurrences corresponding to each of said permissible formats over a first time interval; and calculates said metric using said number of occurrences of the corresponding permissible format. 18. A computer readable media storing a computer program, wherein execution of the computer program is for: determining a metric for each of a plurality of permissible formats; prioritizing said permissible formats according to said metric, resulting in a prioritized order, wherein said permissible formats are transport format combinations (TFC); and decoding the data according to one or more of said permissible formats in said prioritized order, and if said decoding is successful, selecting the corresponding permissible format as the correct transmission format. 19. The computer readable media of claim 18, wherein said metric comprises a Euclidean distance between a first code word associated with a format indication and a second code word corresponding to one of a plurality of permissible format indications. 20. The computer readable media of claim 19, wherein said metric comprises a projection of the first code word associated with said format indication onto a Hadamard space, wherein said Hadamard space includes code word vectors representing said plurality of permissible format indications. 21. The computer readable media of claim 18, wherein only permissible formats having a metric within a first range are included in said prioritized order. 22. The computer readable media of claim 18, wherein execution of the computer program is also for decoding further comprises program code for partially decoding the data until it can be determined whether said decoding is successful. 23. A wireless communication system comprising: a transmitter configured to encode a frame according to a first transmission format, wherein said first transmission format is selected from a plurality of permissible formats; and a receiver configured to: receive said frame, wherein said frame includes a received format indication, decode said frame according to the transmission format corresponding to said received format indication, prioritize said plurality of permissible formats upon encountering a decoding error with said frame, resulting in a prioritized order, wherein said permissible formats are transport format combinations (TFC); and decode said frame according to one of more of said plurality of permissible formats in said prioritized order. 24. The wireless communication system of claim 23, wherein said receiver is further configured to decode said frame according to each of said plurality of permissible formats in said prioritized order until said frame is correctly decoded, or until said permissible formats have been exhausted. 25. The wireless communication system of claim 23, wherein said transmitter is located with a base station, and wherein said receiver is located within a user terminal.
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이 특허에 인용된 특허 (12)
Giridhar D. Mandyam ; Yuan Kang Lee ; Alberto Guiterrez, Decoding system for variable-rate convolutionally-coded data sequence.
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