GCMPR: Gateway-centric multi-path routing for Internet connectivity of wireless mobile ad hoc network

Abstract

Connecting Mobile Ad Hoc Network (MANET) to the Internet will extend Internet into a new territory by making web service available "anytime, anywhere". However, many simulations and practical experiments have shown that when communication is between mobile nodes in MANET and fixed nodes on Internet, the bandwidth is asymmetrical and the available throughput is greatly limited. In this paper, we present a gateway-centric multi-path routing protocol (GCMPR), which ensures every mobile node has a set of link-disjoint and loop-free paths to gateway. The novel routing algorithm over multiple paths can provide higher aggregate bandwidth and improve the end-to-end delay. Simulations for comparing performance between GCMPR and other connectivity methods show that GCMPR achieves 40% throughput enhancement and remarkable improvement for the end-to-end delay. Furthermore, GCMPR can be easily applied to other scenarios in MANET when some hosts provide special service and are visited frequently. © IFIP International Federation for Information Processing 2005.