Wireless Communication

M. Sindhu ¹, S. Rajeswari ²

Affiliations
1 Saranathan College of Engineering, Trichy, IN
2 Dept of ECE, Saranathan College of Engineering, Trichy, IN

Abstract

In MANETs many routing protocols are designed to optimize the battery power efficiently, in order to maximize the lifetime of a network. Some of the proposed solutions to utilize the energy are adjusting the transmission power of wireless nodes and some others tend to manage the sleep state for the mobile nodes. In this paper we aim to conserve much energy by improving the performance of the existing routing protocol known as Adaptive Energy Efficient and Reliable Gossip routing protocol (AEERG). We improved the performance of AEERG protocol by increasing the number of sleep nodes without affecting the reliability of the network. We introduced a counter P to represent the no of paths and timer T to calculate the arrival time. With the help of these counters only the shortest reliable path is activated while all other paths are deactivated by making the nodes of those paths into sleep state. By simulating the proposed protocol, we achieved better results in terms of throughput, packet delivery ratio and maximum energy utilization.

Keywords

Mobile Ad Hoc Networks, AEERG, Routing Protocol, Shortest Path, Reliability, Sleep Nodes, Energy Consumption.

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S. Rajeswari ¹, J. Janet ²

Affiliations
1 St.Peter’s University, Chennai, IN
2 Vel Tech Dr RR & Dr SR Technical University, Chennai, IN

Abstract

In mobile ad hoc network (MANET), Dynamic Source Routing (DSR) is one of the on demand routing protocols for route discovery and route maintenance. The mobility of the nodes in MANET is very high. Due to this mobility the link will not exist for long time. In this situation it is necessary to find alternative path to make communication between the source and the destination. It is a times consuming process whenever the existing route fails frequently. To overcome this problem we propose a modified DSR by adding link breakage prediction algorithm with existing DSR. When the route is discovered the modified DSR finds two routes. One is primary path and other one is backup path. The link breakage prediction algorithm is used to predict the link breakage time in the communicating route and send the warning message to all neighbors and the source node if the link is soon-to-be-broken. If source receive this message it starts using backup route and if back route also fails then it finds alternative route. The backup route will minimize the time consuming process of finding an alternative route to some extent. The main aim is to reduce the link breakage and routing overhead for MANET using Proactive Route Maintenance (PRM). Adding a link breakage prediction algorithm to the DSR protocol protects the link breakages in MANET and to maintain the route. By using this modified DSR minimum 75% of packet loss is reduced.

Keywords

Mobile Ad-Hoc Networks, DSR, Link Breakage, Proactive Route Maintenance.

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