Link reliable multipath routing protocol for mobile ad hoc networks

Reliable data transmission among mobile nodes in highly dynamic ad hoc networks was not ensured by AOMDV routing protocol due to the selection of the multiple node disjoint paths based on only minimal hop counts that lead to link failures and route breaks. For eliminating such problems, we propose an improved ad hoc on-demand multipath routing protocol called Link Reliable Multipath Routing (LRMR) protocol. It finds multiple link reliable paths between any source and destination pair for data transmission using two metrics such as Path Length and Path-Link Quality Estimator (P-LQE). We evaluate the performance of LRMR using NS 2.34 with varying network flows under random waypoint mobility model and compare it with AOMDV routing protocol in terms of Quality of Service (QoS) requirements. The LRMR reduces 9% of routing overhead, 18% of packet loss ratio, 13% of normalized routing overhead and 7% of energy consumption than AOMDV routing protocol. It also increases 9% of packet delivery ratio and 2% of throughput than AOMDV routing protocol. From our simulation results, we show that the LRMR protocol outperforms AOMDV routing protocol.