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In this thesis, a community VOD system based on a dual bus
architecture is introduced and a new protocol based on the
architecture is proposed. The protocol prevents the queueing
and delay problem in the traditional DQDB network and increases
the network throughput. In this dual bus architecture, the VOD
server is located at the middle of the nodes. Assume 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 slot-reusing.
The protocol increases the bandwidth utilization and can meet
the QoS requirements for the VOD data. The system is suitable
to be used as a local VOD system in a wide area multimedia
enterments for the VOD data. The system is suitable to be used
as a local VOD system in a wide area multimedia entertainment
system. Simulation results show that at system with bus
capacity 155 Mbps, the server can support instantaneous Video-
On-Demand service with response time not greater than 0.7
minutes for up to 200 clients.
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