Harq process number management for downlink carrier aggregation

H - Electricity – 04 – L

Patent

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Details

H04L 1/18 (2006.01) H04L 5/00 (2006.01) H04L 27/26 (2006.01)

Patent

CA 2755242

A method for use with a mobile user agent, the method for managing Hybrid Automatic Repeat request (HARQ) processes in a multi carrier communication system that uses HARQ process indicators (HPIs) to manage HARQ processes, the method comprising the steps of designating a first subset of the HPIs as shared HPIs wherein each shared HPI designates a HARQ process irrespective of which of a plurality of system carrier frequencies are used to transmit a traffic packet, designating a second subset of the HPIs as non- carrier-shared HPIs wherein each non-carrier-shared HPI1 in conjunction with the carrier frequency used to transmit a traffic packet, designates a carrier frequency unique HARQ process, receiving an HPI at the mobile user agent, receiving a first traffic packet via a carrier frequency at the user agent that is associated with the HPI, where the HPI is a first subset HPI using the HPI to identify a HARQ process associated with the first traffic packet irrespective of the carrier frequency used to transmit the traffic packet and providing the traffic packet to the identified HARQ process and where the HPI is a second subset HPI using the HPI and the carrier frequency on which the first traffic packet was received to identify a carrier frequency specific HARQ process associated with the first traffic packet and providing the first traffic packet to the carrier frequency specific HARQ process.

L'invention concerne un procédé à utiliser avec un agent d'utilisateur mobile, pour gérer des processus de demande automatique de répétition hybride (HARQ) dans un système de communication multiporteuse qui utilise des indicateurs de processus HARQ (HPI) pour gérer des processus HARQ. Ledit procédé comprend les étapes consistant à désigner un premier sous-ensemble de HPI en tant que HPI partagés, chaque HPI partagé désignant un processus HARQ indépendamment d'une pluralité de fréquences de porteuse système utilisées pour transmettre un paquet de trafic; désigner un second sous-ensemble de HPI en tant que HPI partagés non porteurs, chacun des HPI1 partagés non porteurs conjointement avec la fréquence de porteuse étant utilisé pour transmettre un paquet de trafic; désigner un processus HARQ unique à fréquence de porteuse; recevoir un HPI sur l'agent utilisateur mobile; recevoir un premier paquet de trafic via une fréquence de porteuse sur l'agent d'utilisateur qui est associé au HPI, le HPI étant un premier sous-ensemble HPI utilisant le HPI pour identifier un processus HARQ associé au premier paquet de trafic indépendamment de la fréquence de porteuse utilisée pour transmettre le paquet de trafic et transmettre le paquet de trafic au HARQ identifié, le HPI étant un second sous-ensemble HPI utilisant le HPI et la fréquence de porteuse sur laquelle le premier paquet de trafic a été reçu pour identifier un processus HARQ spécifique d'une fréquence de porteuse associé au premier paquet de trafic et transmettre le premier paquet de trafic au processus HARQ spécifique d'une fréquence de porteuse.

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