Multi-Metric Gateway Discovery for MANET

Mobile Ad Hoc Networks (MANETs) can be connected to the Internet via gateways to provide convenience of allowing mobile nodes in MANET to communicate with fixed nodes on the wired Internet. Current literature uses the number of physical hops to the gateway to decide which gateway the mobile node should connect to. However, gateway with shorter physical hops from mobile node may not necessarily be the ideal gateway, especially in a congested network with high channel contention. In this paper, physical hops, congestion level and contention level of route are combined as one single metric for gateway discovery. Using simulation, the performance of the combined metric for gateway discovery shows better performance compared to the current existing gateway discovery.