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System and method for fully distributed synchronization of a radio communication network

  • US 5,699,388 A
  • Filed: 06/21/1995
  • Issued: 12/16/1997
  • Est. Priority Date: 06/21/1995
  • Status: Expired due to Term
First Claim
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1. In a two-way radio communication network having a plurality of transmission stations for transmitting messages to selective call receiving devices in frames and for receiving transmitted messages, each of said transmission stations including a frame clock to control the timing of said frames, said clock having associated timing information, a system for synchronizing the timing of the frame clocks of a plurality of said stations comprising:

  • means contained in each of said stations for storing station identifying information to uniquely identify said station within said network and an updatable priority indicator identifying a synchronization priority of the station;

    means contained in each of said stations for transmitting a timing message including said station identifying information, said priority indicator and said timing information;

    means contained in each of said stations responsive to the receipt of a timing message transmitted from another of said stations for determining whether said other station is a direct upstream station;

    means contained in each of said stations responsive to a timing message received from a direct upstream station for adjusting said frame clock based on the timing information in said timing message to synchronize the station with said direct upstream station; and

    means contained in each of said stations for updating said stored priority indicator.

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