Routing with load balancing in wireless ad hoc networks.

摘要

An ad hoc wireless mobile network is an infrastructureless mobile network that has no fixed routers; instead, all nodes are capable of movement and can be connected dynamically in an arbitrary manner. In order to facilitate communication of mobile nodes that may not be within the wireless range of each other, an efficient routing protocol is used to discover routes between nodes so that messages may be delivered in a timely manner.; In this thesis, we present a Load-Balanced Ad-hoc Routing (LBAR) protocol for communication in wireless ad-hoc networks. LBAR defines a new metric for routing known as the degree of nodal activity. In LBAR, a route is selected based on activity of nodes. The routes selected are, therefore, likely to have least traffic load and transmit traffic in a timely manner. LBAR has two phases, namely, route discovery and path maintenance . The route discovery phase broadcasts setup messages to the destination, which is responsible for collecting routing information and selecting best routes. Whenever a link failure is detected, path maintenance is initiated to patch up by detouring traffic to the destination. A comprehensive simulation model was conducted to study the performance of the proposed scheme. Performance results show that LBAR outperforms existing ad-hoc routing protocols in terms of packet delivery and average end-to-end delay.