A Heuristic Approach for Link Quality Establishment and Reduced Re-Routing Time in WSN using MPR Algorithm

In WSN MANET’s encounters the link breakups when the node moves from one position onto next position, and forms the dynamic topology consequently. Hence the link constraint is an essential hassle with MANET’s. Whenever the node breaks its link while moving, the routing protocol has to generate alternate link with its one hop neighbour node, thus establishing alternate path. This refers to increase the latency in the network which is referred as retransmission. In this paper the OLSR routing protocol is used to establish the alternate links when the nodes experience the frequent link breaks. The OLSR maintains the link quality of the nodes which are in the one and two hop neighbour distance. This protocol maintains two main tables 1) Neighbour table 2) Topology table. These two main tables give the functionalities in establishing routes to known destinations. The objective of the proposed system is to support higher PHY rate when the packet size is more. Second, MPR is used to select the best one hop neighbour link to reduce the latency. Further, to increase the network lifetime and to conserve the energy S-MAC protocol is used to send nodes in sleep mode, when there is no transmission in the network.