Channel Aware and Dynamic Source Routing in MANETs with Route Handoff
D. Arockia Nancy, P. Anbumani, P. Balamurugan · 2012
Mobile ad hoc networks consist of several wireless mobile nodes which dynamically send data among themselves without the reliance on the fixed base station or a wired backbone network. Due to the limited transmission powermultiple hops are need for a node to send information with any other node in the network. So route discovery and route maintenance is a problem in MANETs. Nowadays multipath routing also taken into consideration.Multipath routing allows the establishment of multiple paths between a pair if source and destination node. It is typically proposed in order to increase the reliability of data transmission or to provide load balancing and has received more attentions. Multipath routing protocol based on AOMDV protocol, which incurs only 2n control packets for a rout e discovery and does not require new types of control messages over AOMDV. We propose a scheme to improve existing on demand routing protocols by creating a mesh and providing alternative routes. Their algorithm establishes the mesh and multipath without any extra control messages.The proposed Channel-Aware AOMDV used to find the stable links for discovery of paths by utilizing the channel average non fading duration. We can maintain reliable connection by applying preemptive handoff strategy and use of channel state information. Using the same information we can reuse the paths instead of being discarded.The Improved CA-AOMDV provides better performance than AOMDV.