Accumulative arq method and system

Details Accumulative arq method and system Accumulative arq method and system

H - Electricity

04

L

H04L 1/18 (2006.01) H04B 7/26 (2006.01) H04L 1/16 (2006.01) H04L 12/28 (2006.01) H04L 12/56 (2006.01)

Patent

CA 2347226

There is disclosed a method of recovering a received packet comprising the steps of: generating a soft value for each bit of the received packet; storing the soft values of the received packet; performing an error check on the received packet; and responsive to detection of an error: i) receiving a retransmission of the packet; ii) generating a soft value for each bit of the retransmitted packet; iii) combining each generated soft value with the respective last stored soft values; iv) storing the combined soft values; v) performing an error check based on the thus combined soft values; and vi) responsive to detection of an error repeating steps i) to v). Circuitry for implementing such a method in a receiver is also disclosed.

L'invention porte sur un procédé de récupération d'un paquet reçu. Ce procédé consiste à: générer une valeur variable pour chaque bit du paquet reçu; enregistrer ces valeurs et effectuer un contrôle d'erreur sur le paquet reçu et réagir à la détection d'une erreur: i) recevoir une retransmission de paquet; ii) générer une valeur variable pour chaque bit du paquet retransmis; iii) combiner chaque valeur variable générer avec les dernières valeurs programmables enregistrées; iv) enregistrer les valeurs variables combinées; v) effectuer un contrôle d'erreur sur la base de ces valeurs variables combinées; et vi) réagir à la détection d'une erreur en répétant les étapes i) à v). L'invention porte également sur des circuits destinés à mettre en oeuvre ce procédé dans un récepteur.

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