Automatic retransmission request

H - Electricity – 04 – B

Patent

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Details

H04B 7/26 (2006.01) H04L 1/00 (2006.01) H04L 1/16 (2006.01) H04L 1/18 (2006.01) H04L 12/28 (2006.01) H04Q 7/34 (2006.01) H04Q 7/22 (2006.01) H04Q 7/30 (2006.01) H04Q 7/32 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2152945

A method for obtaining a report from a mobile station on the status of frames comprising an entire message transmitted to the mobile station (120) is disclosed. First, a polling request is sent to the mobile station from a base station (110). A status report is then sent to the base station. The polling request specifies whether the mobile station should send the status report on a reservation basis (using a reserved frame) or on a contention basis (using an idle frame). The mobile station then transmits a bit map to the communication system to indicate which frames have been correctly received by the mobile station at the point when it received the polling request.

Procédé permettant d'obtenir d'une station mobile (120) un rapport sur l'état de blocs (comprenant un messgae entier) qui lui sont transmis. Une demande d'autorisation de retransmettre est tout d'abord envoyée à la station mobile (120) par une station de base (110). Un rapport d'état est alors transmis à la station de base (110). La demande d'autorisation de retransmettre spécifie si la station mobile doit transmettre le rapport d'état dans le cadre d'une réservation (en utilisant un bloc réservé), ou dans le cadre d'un conflit d'accès (en utilisant un bloc libre). La station mobile transmet alors au système de communication une table de corrélation pour préciser ceux des blocs qui ont été correctement reçus par la station mobile à l'instant où elle a reçu la demande d'autorisation de retransmettre.

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