Multi-beam antenna system for cellular radio base stations

Details Multi-beam antenna system for cellular radio base stations Multi-beam antenna system for cellular radio base stations

H - Electricity

01

Q

H01Q 21/00 (2006.01) H01Q 1/24 (2006.01) H01Q 3/26 (2006.01) H04B 7/08 (2006.01)

Patent

CA 2239601

A base transceiver station operating a sectorized cell of a cellular radio system operates a plurality of narrow uplink main receive beams, and one or a plurality of uplink diversity received beams. A scanning means scans each of theuplink main receive beams to locate a communications channel on the main uplink beams. A diversity receiver receives a diverse beam signal from the diverse beam(s), which is compared with a beam signal received from a main uplink beam, and the main beam signal from the main beam, or a diverse beam signal from the diversity antenna is selected, depending on the comparative signal to noise ratio and signal strength of the main beam signal and diversity beam signal.

Une station de base émettrice-réceptrice installée dans une cellule segmentée d'un système radio cellulaire est affectée à une pluralité de faisceaux principaux étroits reçus appartenant à une liaison ascendante, ainsi qu'à un faisceau reçu en diversité appartenant à cette liaison ascendante ou à une pluralité de tels faisceaux. Un dispositif de balayage explore tous les faisceaux principaux reçus pour trouver un canal de communication sur les faisceaux principaux de cette liaison ascendante. Un récepteur de signaux transmis en diversité reçoit l'un des signaux des faisceaux de diversité et ce signal est comparé au signal reçu de l'un des faisceaux principaux de la liaison ascendante, et le signal du faisceau principal ou celui de l'un des faisceaux de diversité est sélectionné selon les rapports signal sur bruit et les intensités de ces signaux.

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