Retransmission apparatus and method in wireless relay...

H - Electricity – 04 – L

Patent

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H04L 1/18 (2006.01)

Patent

CA 2652793

Apparatus and method for performing Automatic Retransmission reQuest (ARQ) in a wireless relay communication system are provided, which include performing ARQ with the base station (BS), transmitting data successfully received from the BS to mobile station (MS), and retransmitting corresponding data to the MS when a retransmission indication message is received from the BS. Since the relay station (RS) relays only the errorless data to the receiver, the reliability of the data received at the receiver can be enhanced. The load on the RS can be reduced because the transmitter controls the ARQ.

L'invention concerne un appareil et un procédé permettant d'effectuer une demande de retransmission automatique (ARQ) dans un système de communication sans fil à relais. Le procédé consiste à effectuer une ARQ avec la station de base (BS), à transmettre des données reçues avec succès de la BS à une station mobile (MS) et à retransmettre des données correspondantes à la MS, lorsqu'un message d'indication de retransmission est reçu de la BS. Etant donné que la station relais (RS) ne retransmet que les données exemptes d'erreurs au récepteur, la fiabilité des données reçues au niveau du récepteur peut être améliorée. La charge appliquée à la RS peut être réduite car l'émetteur commande la demande de retransmission automatique.

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