Multi-carrier communications with group-based subcarrier allocation

Communications a ondes porteuses multiples avec attribution d'ondes porteuses basee sur des groupes

Abstract

L'invention concerne un procédé et un appareil de sélection de sous-porteuses pour des systèmes donnés. Dans un premier mode de réalisation, un procédé de sélection de sous-porteuses pour un système utilisant l'accès multiple par répartition orthogonale de la fréquence (OFDMA) consiste d'abord à diviser les sous-porteuses en ensembles d'au moins un groupe de sous-porteuses, à recevoir ensuite une indication d'une sélection par l'abonné d'un ou de plusieurs ensembles dans lesdits ensembles, et enfin, à attribuer au moins un groupe dans le/les ensemble(s) de groupes sélectionnés par la sous-porteuse pour qu'il soit utilisé dans les communications avec l'abonné.
A method and apparatus for subcarrier selection for systems is described. In one embodiment, a method for subcarrier for a system employing orthogonal frequency division multiple access (OFDMA) comprises partitioning subcarriers (101) into groups of at least one cluster of subcarriers (102), receiving an indication of a selection by the subscriber of one or more groups (103) in the groups, and allocating at least one cluster in the one or more groups of clusters selected by the subcarrier for use in communication with the subscriber (104, 105).

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