CAR: Contour-based routing in wireless sensor networks

MAP is a connectivity-based routing protocol aimed at improving the load balance performance of traditional geographical routing methods. It attempts to find parallel routing paths by taking advantage of the concept of skeleton in the continuous domain. However, MAP suffers seriously from overloading the sensor nodes that are close to the skeleton. In this paper, we propose a contour-based routing protocol, CAR, that does not require geographical information, produces short routing paths, and achieves outstanding load balancing. Our experimental results show that CAR outperforms MAP in terms of both load balancing and routing path length.