Frame synchronization in a network of space-time multiplexed optical switches.

摘要

SWITCHING ON A NETWORK optics, a main optical space switch is interconnected WITH REMOTE AUXILIARY EQUIPMENT FOR COMMUTE MESSAGES IN BLOCK BETWEEN Multiplexed remote computers. SPATIAL OPTICAL SWITCH MAIN RESPONDS TO A WATCH frequency reference and passes through a sequence of states or configurations, TOURS TO ESTABLISH DIFFERENT TEAMS AMONG THE REMOTE to route messages to PROPERLY PROPER DESTINATION. The reference clock frequency also distributed to remote computers. DURING ONE OF THE STATES FOR EACH structure, each REMOTE AUXILIARY EQUIPMENT transmits a signal "signature" different. All auxiliary equipment is connected via the space switch HOME FOR OPTICAL return their own signals transmitted during that timeslot. EACH AUXILIARY EQUIPMENT REMOTE SIGNAL COMPARE WITH RETURNED signature signal AS ORIGINALLY TRANSMITTED TO DETERMINE THE DELAY has changed path RETURN FROM A NOMINAL. The phase of a clock signal LOCAL CONTROL AUXILIARY EQUIPMENT FITS TO OVERCOME THE VARIATION OF TRAVEL DELAY RETURN. THUS THE OPERATION AUXILIARY EQUIPMENT FITS in synch with the main optical space switch, SO THAT THE TEAM SENT MESSAGES AUXILIARY reach the main optical space switch at the right time REGARDING THE RECONFIGURATION PERIODICA main optical space switch.