Beacon symbol orthogonalization

H - Electricity – 04 – L

Patent

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Details

H04L 27/26 (2006.01)

Patent

CA 2667484

Beacon symbols are sent periodically from the base stations in an OFDM system. The entire power of the base station, or a large portion of it is concentrated in these symbols, thus they are very easily recognized by the mobile stations. The frequencies upon which these symbols are transmitted and the time at which they are transmitted communicates information such as the base station/sector identity and the preferred carrier of the given base station/sector to the mobile station. In order to avoid collision between the beacon symbols of different base stations and sectors, the beacon symbols from different base stations/sectors are transmitted at different symbols times and on different subcarriers.

Selon l'invention, des symboles de balise sont envoyés périodiquement à partir des stations de base dans un système MROF. La puissance entière de la station de base, ou une partie importante de celle-ci est concentrée dans lesdits symboles, de sorte qu'ils sont très facilement reconnus par les stations mobiles. Les fréquences sur lesquelles lesdits symboles sont transmis et le moment où ils sont transmis permettent de communiquer des informations telles que l'identité de la station de base/du secteur et la porteuse préférée de la station de base/du secteur donnés à la station mobile. Afin d'éviter une collision entre les symboles de balise de différentes stations de base et de différents secteurs, les symboles de balise de différentes stations de base/de différents secteurs sont transmis à différents temps symboles et sur différentes sous-porteuses.

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