Efficient Route Discovery and Repair in Mobile Ad-hoc Networks

[[abstract]]Building proper routing protocols for a Mobile Ad-hoc Network (MANET) is a critical challenge because (1) flooding route requests often results in broadcast storm (especially when nodes or connections increase) and (2) re-broadcasting route discovery packets to rebuild or repair a broken path (caused by node mobility) will consume more control packets. To solve such broadcast storm and path damage problems, this paper mixes the ideas of multipoint relaying and 2-hop route repair into a new routing protocol suitable for large-scale MANETs. Simulation results show that the new protocol can effectively repair damaged routes at reduced bandwidth consumption.[[conferencetype]]國際[[conferencedate]]20120326~20120329[[iscallforpapers]]Y[[conferencelocation]]Fukuoka, Japa

On Energy Efficiency and Delay Minimization in Reactive Protocols in Wireless Multi-hop Networks

In Wireless Multi-hop Networks (WMhNs), routing protocols with energy efficient and delay reduction techniques are needed to fulfill users demands. In this paper, we present Linear Programming models (LP_models) to assess and enhance reactive routing protocols. To practically examine constraints of respective LP_models over reactive protocols, we select AODV, DSR and DYMO. It is deduced from analytical simulations of LP_models in MATLAB that quick route repair reduces routing latency and optimizations of retransmission attempts results efficient energy utilization. To provide quick repair, we enhance AODV and DSR. To practically examine the efficiency of enhanced protocols in different scenarios of WMhNs, we conduct simulations using NS- 2. From simulation results, enhanced DSR and AODV achieve efficient output by optimizing routing latencies and routing load in terms of retransmission attempts