Satellite diversity system, apparatus and method

H - Electricity – 04 – B

Patent

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Details

H04B 7/185 (2006.01)

Patent

CA 2560549

Communication diversity using a plurality of satellites is disclosed. The satellites can support multiple regions corresponding to multiple satellite beams. Each satellite can support all regions in the reverse direction and each satellite can be designated as a primary satellite for one of the multiple regions corresponding to one of the multiple satellite beams. Each satellite can receive from any of the regions reverse link signals broadcast by, for example, a mobile station. Each satellite can communicate the received reverse link signals to, for example, a base station or gateway where the signals can be combined to increase signal quality. A mobile station receives forward link signals from the primary satellite and monitors a signal quality from the primary satellite and from a secondary satellite. If the signal quality from the primary satellite drops below a threshold value, the communication signal is transferred to the secondary satellite.

Cette invention permet d'obtenir la diversité des communications en utilisant plusieurs satellite. A cet effet, les satellites peuvent prendre en charge des zones multiples correspondant de multiples faisceaux de satellites. Chaque satellite peut prendre en charge toutes les zones dans la direction retour et chaque satellite peut être désigné comme satellite primaire pour l'une des zones multiples correspondant à l'un des multiples faisceaux de satellites. Chaque satellite peut recevoir en provenance de n'importe laquelle des zones des signaux de liaison retour diffusées par exemple par une station mobile. Chaque satellite peut communiquer les signaux de liaison retour reçus par exemple à une station de base ou à une passerelle, où les signaux peuvent être combinés pour augmenter la qualité des signaux. Une station mobile reçoit les signaux de liaison allé en provenance du satellite primaire et surveille la qualité des signaux provenant du satellite primaire et d'un satellite secondaire. Si la qualité des signaux provenant du satellite primaire tombe au-dessous d'une valeur seuil, le signal de communication est transféré au satellite secondaire.

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