Anchor Based Geographical Routing in WSN

Abstract

A big problem of multi-hop wireless networks is to find a path with a smaller number of longer hops while minimizing the routing cost. The traditional proactive or reactive routing approaches require higher route establishment and maintenance cost because of lack of local decision-making capability. Therefore, position-based geographical routing approach is a solution which works efficiently due to availability of location information, which results local decision capability. Further, the network may have a portion where either nodes are not available, or cannot be deployed, such portion is termed as network void. The traditional geographical routing protocols follow the boundary to detour the void, which causes a longer path to route the packet. This paper presents an anchor-based void handling (AVH) routing protocol which relies on geographic positions. The protocol uses contention mechanism to overcome unnecessary beaconing. The simulation results indicate that proposed AVH protocol outperforms existing protocols in terms of hop stretch, network traffic overhead, delivery ratio, and energy efficiency.