Preamble design for a wireless signal

H - Electricity – 04 – L

Patent

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Details

H04L 5/00 (2006.01) H04W 72/02 (2009.01)

Patent

CA 2705504

Providing for base station (BS) acquisition in semi-planned or unplanned wireless access networks is described herein. By way of example, a signal preamble can be dynamically allocated to wireless signal resources, such that the preamble is scheduled to different resource(s) across different cycles of the signal. Dynamic allocation can be pseudo-random, based on collision feed-back, or determined by a suitable algorithm to mitigate collisions from a dominant interferer. In addition, dynamic scheduling can be particular to a type of BS to significantly reduce collisions from BSs of disparate types. In at least one aspect, a preamble resource can be subdivided into multiple frequency sub-carrier tiles. Control channel information can be transmitted on each tile of a group of such tiles, further mitigating effects of a dominant interferer on a subset of the tile group.

L'invention concerne l'acquisition de station de base dans des réseaux d'accès hertzien à semi-planification ou planification inexistante. Par exemple, un préambule de signal peut être attribué dynamiquement à des ressources de signal hertziennes, de sorte que le préambule soit programmé à destination de ressource(s) différente(s) sur différents cycles de signal. L'attribution dynamique peut être pseudo-aléatoire sur la base d'information de retour de collision, ou bien déterminée par un algorithme approprié permettant d'atténuer les collisions de la part d'un brouilleur dominant. De plus, la programmation dynamique peut être propre à un type de station de base, permettant de réduire considérablement les collisions de la part de stations de base de types divers. Selon au moins un aspect de l'invention, un préambule de ressources peut être subdivisé en volets de sous-porteuses de fréquences multiples. L'information de contrôle de canal peut être transmise sur chaque volet d'un groupe de ces volets, contribuant encore à atténuer les effets d'un brouilleur dominant sur un sous-ensemble du groupe de volets.

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