Method and apparatus for acknowledging reverse link...

H - Electricity – 04 – L

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H04L 1/16 (2006.01) H04B 7/26 (2006.01) H04L 1/08 (2006.01)

Patent

CA 2537443

A method and apparatus for acknowledging reverse link transmissions in a communications system. An information bit is set and then repeated. The repeated information bit is covered with a code having a frame length defined by S = M*N*R, where S is the frame length, M is the number of code symbols per slot, N is the number of slots per frame, and R is the code repetition factor. The gain is then set relative to a power control transmission and the frames resulting from the coding operation are then modulated. After modulation, the result is spread on a designated channel using quadrature spreading and after spreading the acknowledgement is transmitted over the reverse link.

L'invention concerne un procédé et un appareil permettant d'accuser réception de transmissions sur liaison aval dans un système de communication. Un bit d'information est déterminé et répété. Le bit d'information répété est recouvert d'un code possédant une longueur de trame définie par S = M*S*R, S correspondant à la longueur de trame, M au nombre de symboles de code par intervalle, N au nombre d'intervalles par trame et R au facteur de répétition de code. Le gain est établi par rapport à une transmission de commande de puissance et les trames résultant de l'opération de codage sont ensuite modulées. Après la modulation, le résultat est étalé sur une voie désignée, par étalement en quadrature, et après l'étalement, l'accusé réception est transmis sur la liaison aval.

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