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Inter-Station Clock Synchronization for a Time Division Transmission System

IP.com Disclosure Number: IPCOM000041909D
Original Publication Date: 1984-Mar-01
Included in the Prior Art Database: 2005-Feb-03

Publishing Venue

IBM

Related People

Authors:
Ambroise, M Peyronnenc, M [+details]

Abstract

This article describes a clock synchronization method in which a periodic synchronization signal is delivered to the stations of a timedivision transmission system, each of them using it with its local asynchronous clock to regenerate a reference time. Typical time division transmission applications run at 2 Mbps, and each data sample is included in a 488 ns period, called "Data Slot", corresponding to a 2.048 MHz frequency. The clocking system used to control the data slot switching uses a 16.384 MHz clock. Information within a data slot is time referenced. This is done by defining a position for each data slot inside a frame itself identified by a time reference. Let us assume data slots are identified by their time position inside a frame of n = 256 time slots.