Apparatus and method for scheduling over multiple hops

H - Electricity – 04 – W

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H04W 72/02 (2009.01) H04W 40/22 (2009.01) H04W 84/18 (2009.01)

Patent

CA 2713080

Systems and methodologies are described that facilitate scheduling over multiple hops in a wireless communication network. Radio resources can be partitioned into sets of sub-frames that can be allocated statically and/or dynamically. Statically allocated radio resources can be reassigned over time based on the loading on each hop and/or throughput imbalance. In addition, dynamic assignment of sub-frames to each hop can be based on traffic or channel conditions. Moreover, the radio resources can be dynamically allocated in a distributed scheme, wherein a base station controls the scheduling of resources, or a centralized scheme, wherein a relay station controls the scheduling of resources. Furthermore the allocation of radio resources can be transparent or explicit. In the transparent case, the access terminal listens directly to the base station, and the relay station does not transmit control information, such as DL or UL assignments. Conversely, when the allocation of resources is explicit the relay station does transmit control information.

L'invention concerne des systèmes et des procédés qui facilitent une programmation sur de multiples bonds dans un réseau de communication sans fil. Des ressources radio peuvent être divisées en des ensembles de sous-trames qui peuvent être attribuées de manière statique et/ou dynamique. Des ressources radio attribuées de manière statique peuvent être attribuées de nouveau au fil du temps sur la base de la charge de chaque bond et/ou du déséquilibre de capacité de traitement. En outre, une attribution dynamique de sous-trames à chaque bond peut se faire sur la base des conditions de trafic ou de canal. De plus, les ressources radio peuvent être attribuées de manière dynamique dans un schéma distribué, une station de base commandant la programmation de ressources, ou dans un schéma centralisé, une station relais commandant la programmation de ressources. En outre, l'attribution de ressources radio peut être transparente ou explicite. Dans le cas d'une attribution transparente, le terminal d'accès écoute directement la station de base, et la station relais ne transmet pas d'informations de commande, telles que des attributions de DL ou d'UL. Réciproquement, lorsque l'attribution de ressources est explicite, la station relais transmet des informations de commande.

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