ARQ method with adaptive transmittal data block positions

Details ARQ method with adaptive transmittal data block positions ARQ method with adaptive transmittal data block positions

2008-07-22

2008-07-22

Lamarre, Guy J. (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S780000, C714S792000, C375S265000

Reexamination Certificate

active

10523592

ABSTRACT:
In a communication system a transmission-end input data flow with serially successive data is transmitted via a time-variant transmission channel. The transmission-end input data flow is divided into individual words. An a-priori reliability value is determined for each position of a transmittal data block by transmission-end modulation methods and coding methods, and the words of the input data flow are associated with corresponding positions of the transmittal data block according to the a-priori reliability values, and transmitted. An a-posteriori reliability value is formed on the receiving end for each word of the transmittal data block. The words having an a-posteriori reliability value falling below a pre-determined minimum value are re-requested and re-transmitted by acknowledgement of the corresponding positions.

REFERENCES:
patent: 5793983 (1998-08-01), Albert et al.
patent: 6208663 (2001-03-01), Schramm et al.
patent: 6247150 (2001-06-01), Niemela
patent: 00/48052 (2000-08-01), None
patent: 02//067491 (2002-08-01), None
Arvind R. Raghaavan et al., “A Reliability Output Viterbi Algorithm with Applications to Hybrid ARQ”, IEEE Transactions on Information Therory, vol. 44, No. 3, May 1998, pp. 1214-1216.
J. M. Shea, “Reliability-based hybrid ARQ”, Electronics Letters, vol. 38, No. 13, Jun. 20, 2002, pp. 644-645.

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