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3 October 2006 Synchronous OBS solution to support TDM and data services in OBS ring network
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Proceedings Volume 6353, Optical Transmission, Switching, and Subsystems IV; 63532X (2006)
Event: Asia-Pacific Optical Communications, 2006, Gwangju, South Korea
We suggest a new protocol for Optical-Burst-Switched (OBS) ring network to support synchronous services (SONET/SDH, named TDM services) and asynchronous services (data services) expediently. In the new protocol, we use different bandwidth assignment methods for the two kinds of services. For synchronous services, we use fixed bandwidth assignment to broadcast the TDM slots to all remained nodes in optical domain; for asynchronous services, we use dynamic bandwidth assignment by OBS technologies. The data channel is frame based with 125μs frame period. In each 125μs frame, there are several reserved time slots for TDM services, and the remained time block can be used to transport data services. The main features of this protocol: 1) the bandwidth ratio of TDM and data services can be adjusted flexibly basing on demand; 2) the TDM services can be transported with guaranteed QoS; 3) the data services can be transported in data burst with statistic multiplexing profit; 4) we can transport TDM and data services in same data channel with OBS technology; 5) the total bandwidth utilization is about 70%.
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Yaojun Qiao, Tokuro Kubo, and Tamio Saito "Synchronous OBS solution to support TDM and data services in OBS ring network", Proc. SPIE 6353, Optical Transmission, Switching, and Subsystems IV, 63532X (3 October 2006); doi: 10.1117/12.689594;


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