A Modified AODV to Cope with Marine Mobile Ad-Hoc Networks

Abstract

This Marine mobile ad-hoc network (MMANET) is a dynamic wireless network, and the random mobility of ship nodes and limited radio transmission range are the main challenges in the design of the robust routing algorithm. Dynamic Source Routing (DSR) and Ad hoc On-Demand Vector Routing (AODV) are typical on-demand protocols, but if there are some nodes moving with random fast velocity and limited transmission range in communication network, the network will be under an unstable link state and this situation may lead to large delay and packet loss. In this paper, a new scheme named Dynamic Link Self-healing mechanism on the basis of Mobility Quantization AODV (DLMQ-AODV) is proposed to solve the problem. Mobility quantization of node is resulting from relative velocity and distance, through computation of weighting, dimensionless etc. We take advantage of mobility quantization to establish dynamic link self-healing mechanism in order to improve the routing performance. The simulation results show that DLMQ-AODV has a better performance in comparison to DSR and AODV.