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035 _a.b11982482
099 9 _aAIT Thesis no.TC-05-08
100 0 _aNguyen Truong Giang
245 1 0 _aOptimization of the core-router fiber-delay-line-buffer dimensions for horizon-based optical burst switching in WDM networks
260 _aPathum Thani, Thailand :
_bAsian Institute of Technology,
_c2005
300 _a56 leaves :
_bill.
490 1 _aThesis ;
_vno. TC-05-08
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology
502 _aThesis (M.Eng.) - Asian Institute of Technology, 2005
520 _aIn this study, we show that in Optical Burst Switching, optimal dimensions exist for Fiber Delay Line (FDL) buffer when used in configuration with the Horizon scheduler. We investigate the performance of the Horizon scheduler with FDL buffer in terms of burst loss probability, mean delay, and buffer usage by using an NS-2 based simulator. From the numerical results, we show that the burst loss probabilities are at a minimum when the elemental or unit delay is about 0.4 to 0.6 times the mean burst duration for a mean offered load per channel of 0.9 and a mean burst duration of 30 s. Within this range, the mean delay varies between 10 s and 60 s for buffer depths of 1 to 7. The performance of the Horizon scheduler is also investigated for self-similar input traffic. It is shown that the performance of Horizon scheduling algorithm is more sensitive to the distribution of the Control Packet inter-arrival time while the distribution of the burst duration has less effect on the scheduler's performance. It is found that optimum dimensions for the FDL buffer also exist for self-similar traffic.
650 0 _aRouters (Computer networks)
650 0 _aDelay lines
700 1 _aSharma, A.B.,
_eChairperson
700 1 _aErke, Tapio J.,
_eExamination Committee
700 0 _aPoompat Saengudomlert,
_eExamination Committee
710 2 _aStarr Foundation,
_eScholarship donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. TC-05-08
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B10037
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