Method for scheduling mobile station uplink transmissions

H - Electricity – 04 – B

Patent

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Details

H04B 7/00 (2006.01) H04J 3/24 (2006.01) H04J 11/00 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2503821

A communication system (300, 1000) supports Hybrid Automatic Repeat Request (H- ARQ), Adaptive Modulation and Coding (AMC), active set handoff, and scheduling functions in a distributed fashion by allowing a mobile station (MS) (1014) to signal control information corresponding to an enhanced reverse link transmission to Active Set base transceiver stations (BTSs) (301, 303, 304) and by allowing the BTSs to perform control functions (314, 316, 318) that were supported by an radio network controller (RNC) in the prior art. The communication system allows time and SIR-based H-ARQ flush functions at the BTSs during soft handoff (SHO), provides a control channel structure to support scheduling, H-ARQ, AMC functions for an enhanced reverse link, or uplink, channel (414) in order to maximize throughput, and enables an MS in a SHO region to choose a scheduling assignment corresponding to a best TFRI out of multiple assignments it receives from multiple active set BTSs.

L'invention concerne un système de communication (300, 1 000) prenant en charge une demande de répétition automatique hybride (H-ARQ), une modulation et un codage de type adaptatif (AMC), un transfert de l'ensemble actif, et des fonctions d'ordonnancement, de manière distribuée, en autorisant une station mobile (MS) (1 014) à signaler les informations de commande correspondant à une transmission de liaison inverse améliorée vers des stations émetteurs-récepteurs de base d'ensemble actif (BTS) (301, 303, 304), et en permettant aux BTS d'exécuter des fonctions de commande (314, 316, 318) prises en charge par un dispositif de commande de réseau radio (RNC) dans l'état de la technique. Le système de communication permet des fonctions de suppression de H-ARQ, en fonction du temps et de SIR au niveau de BTS, lors d'un transfert logiciel (SHO), fournit une structure de canal de commande pour prendre en charge l'ordonnancement ; des fonctions H-ARQ, AMC pour une liaison inverse améliorée, ou une liaison montante, un canal (414) afin de maximiser le rendement, et permet à une zone MS d'un SHO de choisir une attribution d'ordonnancement correspondant au meilleur TFRI parmi plusieurs attributions qu'elle reçoit de plusieurs BTS d'ensemble actif.

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