Impairment-aware QoS provisioning in dual-header OBS networks  

作　　者：樊玉琦 王斌 李廉 

机构地区：[1]College of Computer Science and Engineering, Hefei University of Technology [2]Department of Computer Science and Engineering, Wright State University 3640 Colonel Glenn Highway

出　　处：《Chinese Optics Letters》2011年第7期13-16,共4页中国光学快报（英文版）

基　　金：supported in part by the National "973" Program of China under Grant No. 2009CB326203

摘　　要：Signal degradation due to physical impairments may result in unacceptable bit-error rates of received signals at the destination. Based on earlier work, we study the impairment-aware quality of service （QoS） provisioning problem in dual-header optical burst switching （OBS） networks that employ two control packets for each data burst. At an OBS node, the proposed algorithm schedule bursts for transmission by searching for available resources using admission control and preemption. The algorithm also verifies signal quality. Simulation results show that this algorithm is effective in providing QoS support in OBS networks while considering physical impairment effects.Signal degradation due to physical impairments may result in unacceptable bit-error rates of received signals at the destination. Based on earlier work, we study the impairment-aware quality of service （QoS） provisioning problem in dual-header optical burst switching （OBS） networks that employ two control packets for each data burst. At an OBS node, the proposed algorithm schedule bursts for transmission by searching for available resources using admission control and preemption. The algorithm also verifies signal quality. Simulation results show that this algorithm is effective in providing QoS support in OBS networks while considering physical impairment effects.

关 键 词：OBS NET WORK QoS Impairment-aware QoS provisioning in dual-header OBS networks OSNR 

分 类 号：TN929.11[电子电信—通信与信息系统]