Title page for etd-0819101-235443


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URN etd-0819101-235443
Author Min-Lung Chen
Author's Email Address saxon@ccn.ee.nsysu.edu.tw
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Department Electrical Engineering
Year 2000
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title An Effective Throughput-Recovery Mechanism with Priority Queue in Differentiated Services Networks
Date of Defense 2001-07-26
Page Count 78
Keyword
  • QoS
  • Feedback Self-Adaptive
  • Throughput-Recovery
  • Dynamic Weight Adjustment
  • Abstract It is known that to pursuit end-to-end QoS of a class-based traffic flow is inefficient in Differentiated Service Networks. Therefore in this thesis, we propose an effective throughput-recovery mechanism to allow high-priority traffic flow to receive suitable resource
    allocation, and hence the end-to-end QoS is guaranteed.
    The proposed throughput-recovery mechanism assures a predefined minimum departure rate of low-latency EF dataflow. It consists of two parts. The first part is referred to as the feedback self-adaptive mechanism, where the egress node measures and monitors throughput of EF dataflow to decide whether to send the control messages to ingress node. When ingress node receives the control messages, it will reallocate the resources to improve EF throughput. The second part is referred to as the dynamic weight adjustment mechanism, which can prevent EF packets from
    dropping when congestion occurs in the core routers.
    For the purpose of demonstration, we build a mathematical model and use NS-2 simulator. We have proved our throughput-recovery mechanism is effective in improving the throughput of EF traffic flow. Finally, we modify the traditional WRR such that it can adjust weight based on the
    delay requirements.
    Advisory Committee
  • Shie-Jue Lee - chair
  • Cheng-Shong Wu - co-chair
  • Wei-Kuang Lai - co-chair
  • Wen-Shian Chen - co-chair
  • Tsang-Ling Sheu - advisor
  • Files
  • etd-0819101-235443.pdf
  • indicate access worldwide
    Date of Submission 2001-08-19

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