Distributed Reservation Protocol and QoS Method in WR-OBS System

1IntroductionOptical Burst Switching (OBS)1 ~4]provides a feasi-ble paradigm for Internet Protocol (IP) over Wave-length-Division Multiplexing ( WDM) integration5 ~10],which has been the focus of intense investigation owingtoits flexibilityin utilizingthe terahertz bandwidth of asingle fiber andits capabilitytosupport transparent datatransmissions. However , with the emergence of allkinds of applications such as data ,voice ,the next-gen-eration network must also be designedto provide …

Distributed Reservation Protocol and QoS Method in WR-OBS System

Starting from centralized control model used in wavelength routed optical burst switching network, a distributed control model and correspondent wavelength resource reservation protocol are proposed in this paper. Two Quality-of-Service (QoS) methods, Based on the resource reservation protocol, are discussed. Also, computer simulation is implemented to investigate the performance of the newly proposed reservation protocol and QoS methods. Simulation results demonstrate that the QoS methods can efficiently provide different level service quality to traffic with different priorities. Furthermore, performances of the two QoS methods are compared concerning the QoS distinguished level, burst lost probability and implementation difficulty. It has been shown that the newly propose reservation protocol and QoS methods is a high qualified candidate for the future OBS networks.