Patent ID: 6804527
Filing Date: 2004-10-12
Classification: H04J,H04W

Abstract:
For use in a first radio frequency (RF) modem shelf associated with a first one of a plurality of base stations in a fixed wireless access network, a timing distribution apparatus for synchronizing the operations of a plurality of RF modems in said first RF modem shelf comprising:a primary master clock source capable of generating an internal master clock signal and an internal master framing signal; a plurality of interface control processors, each of said interface control processors capable of receiving said internal master clock signal and said internal master framing signal and capable of using said internal master clock signal and said internal master framing signal to synchronize a downlink transmission of one of said plurality of RF modems; a synchronization bus capable of distributing said internal master clock signal and said internal master framing signal from said primary master clock source to said plurality of interface control processors; an external interface input port capable of receiving at least one external master synchronization signal from a second RF modem shelf in said fixed wireless access network; and an external interface output port capable of receiving at least one of said internal master clock signal and said internal master framing signal from said primary master clock source and transmitting said at least one of said internal master clock signal and said internal master framing signal to said second RF modem shelf.