چکیده (انگلیسی):

The Optical Burst Switching is a new switching technology that efficiently utilizes the bandwidth in the
optical layer. The key areas to be concentrated in Optical Burst Switching (OBS) networks are the burst
assembly and burst scheduling i.e., assignment of wavelengths to the incoming bursts. This study presents a
New Burst Assembly and Scheduling (NBAS) technique in a simultaneous multipath transmission for burst
loss recovery in OBS networks. A Redundant Burst Segmentation (RBS) is used for the burst assembly. In
our proposed algorithm, the proper policy is selected based on the priority of each burst, the length of each
burst and the length of the redundant data. After assembling the burst, the burst scheduler algorithm
schedules the burst. This algorithm is responsible for the output wavelength and contention-free fiber delay
lines to switch every burst payload to its target output fiber. The OBS network simulator (nOBS) patch in
NS-2 is used to simulate our network. NBAS technique improves the quality of service constraints like
delivery ratio, delay compared to RBS technique. From the simulation results, it is shown that our proposed
technique New Burst Assembly and Scheduling (NBAS) optimizes the delay and overhead through the best
burst assembly and scheduling thereby increasing the delivery ratio.