Research: A community VOD system based on a dual bus architecture

  • Authors:

  • Pei-Hua Chu;Ruay-Shiung Chang

  • Affiliations:

  • Department of Information Management, National Taiwan Institute of Technology, Keelung Road, Taipei, Taiwan;Department of Information Management, National Taiwan Institute of Technology, Keelung Road, Taipei, Taiwan

  • Venue:
  • Computer Communications
  • Year:
  • 1998

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Abstract

This paper introduces a community VOD system based on a dual bus architecture, and proposes a new protocol based on the architecture. The protocol avoids the problems of queuing and delay in the traditional DQDB network and increases the network throughput. In this dual bus architecture, the VOD server is located in the center position of the dual bus. Assuming no transmission is needed between any two customers, no queue for multiple access is needed in the system. The server sends data whenever it wants. It is made possible through slotreusing. The protocol increases the bandwidth utilization and can meet the QoS requirements for the VOD data. The system is suitable for use as a local VOD system in a wide-area multimedia entertainment system. Simulation results show that a system with a bus capacity of 155 Mbps, the server can support an instantaneous Video-On-Demand service with response times not longer than 0.7 min for up to 200 clients.