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首页> 外文期刊>Journal of computer sciences >NEW BURST ASSEMBLY AND SCHEDULING TECHNIQUE FOR OPTICAL BURST SWITCHING NETWORKS
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NEW BURST ASSEMBLY AND SCHEDULING TECHNIQUE FOR OPTICAL BURST SWITCHING NETWORKS

机译：光突发交换网络的新突发组装和调度技术

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摘要

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.
机译：光突发交换是一种新的交换技术，可有效利用光层中的带宽。光突发交换（OBS）网络中要集中的关键领域是突发组装和突发调度，即，将波长分配给进入的突发。这项研究提出了一种新的突发组装和调度（NBAS）技术，用于同时多路径传输，以恢复OBS网络中的突发损失。冗余突发分段（RBS）用于突发组合。在我们提出的算法中，根据每个突发的优先级，每个突发的长度和冗余数据的长度来选择适当的策略。在组装突发之后，突发调度器算法对突发进行调度。该算法负责输出波长和无争用光纤延迟线，以将每个突发有效负载切换到其目标输出光纤。 NS-2中的OBS网络模拟器（nOBS）补丁用于模拟我们的网络。与RBS技术相比，NBAS技术改善了服务质量约束，例如传递比率，延迟。从仿真结果可以看出，我们提出的技术新突发组装和调度（NBAS）通过最佳突发组装和调度来优化延迟和开销，从而提高了交付率。

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