Comparative Analysis of Ad Hoc Multi-path Update Techniques for Multimedia Applications
Multi-path transmission in ad-hoc networks provides higher bandwidth and better guarantee on packet delivery than the traditional single shortest-path method. This is important to multimedia applications since processing of data packets is sensitive to error and delay. Current ad-hoc protocols are classified as either proactive or reactive. Reactive protocols are more suitable for optimizing path selection than proactive protocols. Among a set of reactive protocols, DSR (Dynamic Source Routing) is the most commonly used protocol for multi-path transmission. However DSR lacks the ability to give a constant update on backup multi-paths. The aim of this comparative study is to investigate existing path updating techniques and incorporate them on backup multi-path update. Multicast, unicast and hello broadcast are compared analytically and tested on ns-2. The result of the simulated test has shown that an extension of AODV’s hello broadcast gives the best overall performance.
KeywordsSource Node Destination Node Route Discovery Link Failure Scalable Video Code
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