Cellular system with optical link between mobile telephone...

H - Electricity – 04 – M

Patent

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Details

H04M 11/00 (2006.01) H04B 10/12 (2006.01) H04Q 7/30 (2006.01)

Patent

CA 2268309

A cellular system (10) includes wide band digital signal processing at a central office (14) that is connected to one or more cellular sites (12) by optical fiber cables (16). Data signals are exchanged between the cell sites (12) and the central office (14) using intensity modulated optical data signals. Control of call supervision and handling is consolidated in the central office (14) to enable dynamic variation of wireless service reception and transmission capabilities at a cell site (12) in response to changing demands for wireless service. Each antenna (140) at a cell site (12) may receive and transmit an assigned RF bandwidth using any frequency within that band. The central office (14) processes the entire received spectrum for controlling detection and transmitting range, RF carrier frequency and transmit power level for an active channel link established between a cellular station and the system in a cell site (12).

Système cellulaire (10) comprenant un traitement de signaux numériques à large bande au niveau d'un central (14) qui est raccordé à un ou plusieurs sites cellulaires (12) par des câbles (16) de fibres optiques. Des signaux de données sont échangés entre les sites cellulaires (12) et le central (14) avec des signaux de données optiques modulés en intensité. La commande de la surveillance et du traitement des appels est consolidée au niveau du central (14) de façon à permettre des variations dynamiques des capacités de réception et de transmission de services sans fil au niveau d'un site cellulaire (12) en réponse à des demandes de modification concernant le service sans fil. Chaque antenne (140), au niveau d'un site cellulaire (12), peut recevoir et émettre une largeur de bande HF attribuée, à l'aide de n'importe quelle fréquence se trouvant dans cette bande. Le central (14) traite la totalité du spectre reçu en vue de contrôler la plage de détection et de transmission, la fréquence porteuse HF et le niveau de puissance de transmission pour une liaison de voies en service établie entre une station cellulaire et le système dans un site cellulaire (12).

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