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Unidireational link mesh network over DVB-S(Direct video broadcast - Satellite)
Date of Project Completed
Status Project
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Existing geostationary satelite network typically are bidirectional Poin-to-Point star configuration network or Point-to-Multipoint unidirectional network for transmission. The combination of Point-to-Multipoint unidirectional technology with bidirectional transmission in the form of a Unidirectional Link (UDL) mesh is expected to improve bandwith utilization, latency and cost. A brief overview of traditional Poin-to-Point configuration vs UDL mesh links is presented. We have implemented a prototype UDL mesh network in the lab using a ULE encapsulator in bridge frame encapsulation mode. Each UDL node requires an ASI (Asynchronous Serial Interface) card connected to a DVB-S modulator and must have (N-1) DVB receiver cards where N is the number of nodes in the UDL mesh network. Transmission of data is performed through the ASI interface at a frequency allocated for a node, while each of the (N-1) DVB receiver cards on a UDL node is responsible for receiving data from the other (N-1) UDL peer nodes.

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School of Computer Sciences
, Universiti Sains Malaysia

11800 Minden
Pulau Pinang

Full Name [1]
Dr. Wan Tat Chee
Email [1]