Title page for etd-0730114-114813


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URN etd-0730114-114813
Author Chia-Chi Chang
Author's Email Address No Public.
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Department Electrical Engineering
Year 2014
Semester 1
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Dynamic Rate Control Mechanism for Real-time Video Multicasting on Mobile Communication Networks
Date of Defense 2014-08-27
Page Count 81
Keyword
  • Multicast
  • Real-time Video
  • NS-3
  • Mobile Communication Networks
  • Rate Control
  • Abstract Multicast is an effective scheme to save network bandwidth when real-time multimedia streams are transmitted over a mobile communication network. Current researches lack of a comprehensive rate control mechanism for a mobile environment, where signal interference and network congestion occur very easily. It is well known that packet loss due to signal interference, network congestion, or even user mobility, may bring about a critical deterioration in video quality. In this thesis, we propose a dynamic rate control mechanism (DRCM), with which severe packet loss due to interference or congestion in a mobile network can be reduced. In DRCM, a mobile station (MS) can distinguish between interference and congestion via measured block error rate (BLER) and congestion loss rate (CLR). To effectively decrease packet loss rate (PLR), a base station (BS) can adjust its sending rate by measuring round trip time (RTT) and the returned BLER from MS. Two mathematical equations are derived to reduce PLR when interference and congestion occurs individually. Furthermore, we combine the equations together for deriving a minimum data rate when interference and congestion occur simultaneously. To evaluate the performance of the proposed DRCM, we perform NS-3 simulation. In the simulation, we discuss the impact of interference, user mobility, and buffer size on PLR while an adequate sending rate is determined. Simulation results have shown that the proposed DRCM can decrease PLR significantly in a mobile communication network.
    Advisory Committee
  • Chungnan Lee - chair
  • Zi-Tsan Chou - co-chair
  • Tsung-Chuan Huang - co-chair
  • Tsang-Ling Sheu - advisor
  • Files
  • etd-0730114-114813.pdf
  • Indicate in-campus at 5 year and off-campus access at 5 year.
    Date of Submission 2014-09-01

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