MULTICAST PROTOCOL PERFORMANCE OF AD-HOC NETWORKS IN AHOTSPOT CONTEXT

摘要

This paper discusses the usage of Ad-hoc technologies as?hotspot extension? mechanisms. In this scenario, multicastgateways have _xed locations and speed and connectad hoc islands to the internet. In such an environment, traf-_c is concentrated around such hotspot areas and protocolperformance suffers from congestion. For improving multicastprotocol performance in this scenario, we proposeextensions for ODMRP and MAODV routing algorithmsby augmenting them with a zone routing behavior, thusproducing two new hybrid multicast routing algorithms,ZODMRP and ZMAODV. Our extensive simulation resultsshow that ZODMRP provides the highest packet deliveryratio and lowest delay without introducing too much overhead,which makes it the protocol of choice for providinghigh quality packet delivery in multicast sessions.