Orthogonal resource reuse with sdma beams

H - Electricity – 04 – W

Patent

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Details

H04W 16/02 (2009.01) H04W 16/28 (2009.01)

Patent

CA 2648568

A wireless communication system can implement beamforming across multiple omni-directional antennas to create beams at different spatial directions. The communication system can arrange the beams in sets, with each set arranged to provide substantially complete coverage over a predetermined coverage area. The communication system can arrange the multiple SDMA beam sets to support substantially complementary coverage areas, such that a main beam from a first set provides coverage to a weak coverage area of the second beam set. The wireless communication system assigns or otherwise allocates substantially orthogonal resources to each of the beam sets. The wireless communication system allocates resources to a communication link using a combination of beam sets and substantially orthogonal resources in order to provide improved coverage without a corresponding increase in interference.

L'invention concerne un système de communication sans fil pouvant mettre un oeuvre la formation de faisceau au moyen de plusieurs antennes équidirectives pour créer des faisceaux dans différentes directions spatiales. Le système de communication selon l'invention peut agencer les faisceaux en groupes, chacun de ces groupes étant conçu pour assurer une couverture sensiblement complète d'une zone de couverture prédéterminée. Ce système de communication peut agencer lesdits groupes de faisceaux SDMA pour assurer la couverture de zones de couverture sensiblement complémentaires, de sorte qu'un faisceau principal faisant partie d'un premier groupe assure la couverture d'une zone de couverture faible du deuxième groupe de faisceaux. Le système de communication sans fil alloue ou attribue des ressources sensiblement orthogonales à chacun des groupes de faisceaux. Ce système de communication sans fil associe des ressources à une liaison de communication au moyen d'une combinaison de faisceaux et des ressources sensiblement orthogonales pour fournir une couverture sensiblement meilleure sans augmenter les interférences.

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