Importance

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Abstract

A communication system for providing downlink and uplink communication between Service Providers, and users located in RF remotely located isolated areas, includes the sequential series connection of Service Provider signal sectors to Radio Interface Modules (RIM's), Service Combiner Units (SCU's), Fiber Transceiver Units (FTU's), Optical Multiplexer Units (OMU's), and Remote Fiber Nodes (RFN's), with only the RFN's being located in the RF isolated areas. The RIM's provide level control of RF signals bidirectional flowing between the Service Providers and SCU's. The SCU's both multiplex and split received downlink RF signals for inputting to the FTU's, and also combine and split RF uplink signals received from the FTU's for feed to the RIM's. The FTU's convert downlink RF signals into optical signals, and split the optical signals for connection to the OMU's. The FTU's also convert uplink optical signals received from the OMU's into uplink RF signals for connection to the SCU's. The OMU's combine downlink optical signals received from the FTU's for inputting into the RFN's, and demultiplex uplink optical signals received from the RFN's for connection to the FTU's. The RFN's convert downlink optical signals into RF signals, and amplify and feed these signals into an antenna system. The RFN's also receive RF uplink signals from devices of users in RF isolated areas, and converts the RF uplink signals into optical uplink signals for connection to the OMU's.

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First Claim