• Anita Das
• Prabhakar Sharma

The ad hoc mobile network (MANET) is a collection of wireless mobile nodes that dynamically form a temporary network without depending on any infrastructure or central administration. Energy consumption is considered one of the main limitations of MANET, as mobile nodes do not have a permanent power supply and must depend on batteries, which reduces the useful life of the network, since the batteries discharge very quickly while the nodes move and quickly change position in MANET. This research work highlights the energy consumption in MANET by applying the Optimized Packet Forwarding (OPF) technique to optimize the energy consumption in ad hoc on demand multipath distance vector (AOMDV) routing protocol. The OPF function is used to find the optimal path from source node to destination node to reduce the energy consumption in multipath routing during the transmission of packets. The proposed method adjust it transmission range when its energy get exhausted to its one third and pursue for another path for packet forwarding. It is shown that use of variable range transmission approach achieves lower transmission power levels compared to using common-range transmission approach. Thus, the new schemes based on variable-range transmission increase the traffic carrying capacity of wireless ad hoc network, and at the same time, reduce the overall transmission power consumption in the network. The performance of the proposed OPF_AOMDV protocol has been evaluated by using network simulator version 2, where the performance was compared with FF-AOMDV and AOMDV protocols, the two most popular protocols proposed in this area. The comparison was evaluated based on energy consumption, throughput, packet delivery ratio, end-to-end delay, network lifetime and network routing load performance metrics, varying the node speed, packet size, and simulation time. The results clearly demonstrate that the proposed OPF_AOMDV outperformed FF-AOMDV and AOMDV under majority of the network performance metrics and parameters. The simulative results according to Packet size shows that proposed OPF_AODV performed well and has 0.493 % of improvement in terms of energy consumption, 2.069 % of improvement in terms of throughput, 1.99 % of improvement in terms of packet delivery ratio, 9.41 % of improvement in terms of end to end delay and 2.727% of improvement in terms of network routing load compared to existing FF- AOMDV protocol.

Wireless Networks, MANET, AOMDV, Energy efficient, Multipath routing protocols

"An update based Energy Efficient Multipath Routing Protocol with Optimized Packet Forwarding for MANETs ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.450-463, June 2019, Available :http://www.jetir.org/papers/JETIR1907E65.pdf

"An update based Energy Efficient Multipath Routing Protocol with Optimized Packet Forwarding for MANETs ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp450-463, June 2019, Available at : http://www.jetir.org/papers/JETIR1907E65.pdf