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Study of Token Generation for Burst traffic shaping in Optical Burst Switching Networks

Wuhan University Journal of Natural Sciences 2004年第1期9卷 27-30页

作者： TangWan SoWon-ho LiuJi-guang KimYoung-chon SchoolofElectronicInformation WuhanUniversityWuhan430072HubeiChina DepartmentofComputerEducation SunchonNationalUniversityJeormam540-742Korea CollegeofComputerScience SouthCentralUniversityforNationalitiesWuhan430074HubeiChina DepartmentofComputerEngineering ChonbukNationalUniversityJeonju561-756Korea

traffic shaping is one of important control operation to guarantee the Quality of Service (QoS) in optical burst switching (OBS) networks. The efficiency of traffic shaping is mainly determined by token generation method. In this paper, token generation methods of traffic shaping are evaluated by using three kinds of probability distribution, and are analyzed in terms of burst blocking probability, through-put and correlation by simulation. The simulation results show that the token generation methods decrease the burst correlation of Label Switched Paths (LSPs), and solve traffic congestion as well. The different burst arrival processes have small impact on the blocking probability for OBS net works. Key words optical burst switching - traffic shaping - token generation - quality of service CLC number TP 929.11 Foundation item: Supported by the National Natural Science Foundation of China (60132030) and the Korea Science and Engineering Foundation (KOSEF) through OIRC ProjectBiography: Tang Wan (1974-), female, Ph. D candidate, research direction: contention resolution and routing mechanism in OBS networks.

关键词： optical burst switching traffic shaping token generation quality of service

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An Admission Control Scheme for End—to—End Statistical QoS Provision in IP Networks

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Journal of Computer Science & Technology 2003年第3期18卷 267-277页

作者：庞斌邵怀荣高文 Institute of Computing Technology The Chinese Academy of Sciences Beijing 100080 P.R. China Mitsubishi Electric Research Laboratories 201 Broadway Camberidge MA 02139 U.S.A.

This paper presents a distributed and scalable admission control scheme to provideend-to-end statistical QoS guarantees in IP network. The basic idea of the scheme is that the ingressrouters make admission control decisions according to the network status information obtained bysending probing packets along the selected routing path. Each router passively monitors thearriving traffic and marks the probing packets with its network status. The performance of thepresented scheme is evaluated with a variety of traffic models, QoS metrics and network *** simulation results show that the proposed scheme can accurately control the admissible regionand effectively improve the utilization of network resource.

关键词： admission control quality of service differentiated services performanceevaluation traffic shaping statistical multiplexing

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