Title :
On the deflection routing in QoS supported optical burst-switched networks
Author :
Hsu, Ching-Fang ; Liu, Te-Lung ; Huang, Nen-Fu
Author_Institution :
Dept. of Comput. Sci., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
Generally speaking, buffer requirement is not vital for JET-based optical burst switching (OBS). However, if deflection routing is enabled, optical buffers are necessary to solve the insufficient offset time problem. Another solution, which can alleviate buffering, is to lengthen offset time in the beginning. As previous work indicated, a burst with extra offset time has higher priority than that without extra offset time and quality of service (QoS) can be accomplished in this way. Therefore, we investigate the performance of deflection routing in prioritized JET-based optical burst-switched networks. A queuing model is proposed to approximate loss probability. We also evaluate the impact of deflection routing in Arpanet-2 topology by simulation.
Keywords :
network topology; optical fibre networks; optical storage; optical switches; packet switching; probability; protocols; quality of service; queueing theory; telecommunication network routing; Arpanet-2 topology; JET-based optical burst switching; JET-based optical burst-switched networks; OBS protocols; QoS supported optical burst-switched networks; deflection routing performance; just-in-time; loss probability; offset time problem; optical buffers; quality of service; queuing model; simulation; Bandwidth; Broadcasting; Delay effects; Delay lines; Intelligent networks; Optical buffering; Optical fiber networks; Optical switches; Optical wavelength conversion; Routing;
Conference_Titel :
Communications, 2002. ICC 2002. IEEE International Conference on
Print_ISBN :
0-7803-7400-2
DOI :
10.1109/ICC.2002.997350
