• Title/Summary/Keyword: Dynamic Rate Assignment (DRA)

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Performance Analysis of Satellite Communication System for Multimedia Services with Full Connectivity (전연결 멀티미디어 서비스를 지원하는 위성통신 시스템의 성능분석)

  • Teng, Yue;Kim, Doug-Nyum
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.30 no.11A
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    • pp.1035-1046
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    • 2005
  • This paper analyzes the channel assignment techniques and their performance in the On Board Processing (OBP) satellite communication system. It suggests the new Continuous Rate Assignment (CRA) and Dynamic Rare Assignment (DRA) for improving the efficiency of channel assignment at the OBP switch. Mathematical analysis and simulation are given to evaluate the system performance. Aggregate real-time and non-real-time services are considered as different classes. Higher priority is given to voice and video real-time services to avoid delay variation. Onboard scheduler uses CRA and DRA ways to arrange the capacity allocation dynamically. An improved algorithm is given to make the channel more efficient by doing some evaluation of the switching matrix.