Patent ID: 7072586
Filing Date: 2006-07-04
Classification: H04B

Abstract:
1. A central control station configured to control base stations connected thereto, and is connected to an upper-level station, said central control station comprising: a demultiplexing unit configured to demultiplex a signal supplied from the upper-level station to generate a plurality of demultiplexed signals for transmission to the base stations; analog-to-digital converters coupled to said demultiplexing unit, configured to convert the respective demultiplexed signals from digital to analog, so as to output respective analog signals; analog signal conversion units which are coupled to said analog-to-digital converters, configured to convert the respective analog signals into converted analog signals having a common transmission format; transceiver units including at least one radio transceiver unit linked to a corresponding one of the base stations via a radio link and at least one optical transceiver unit linked to a corresponding one of the base stations via an optical fiber link; and a distribution unit which is provided between said analog signal conversion units and said transceiver units, configured to provide changeable interconnections between said analog signal conversion units and said transceiver units for the converted analog signals having the common transmission format, said common transmission format enabling compatibility between radio links and optical fiber links with respect to the changeable interconnections.