Date Added: Aug 2012
In this paper, a new energy efficient cross layer routing protocol is introduced for Wireless Sensor Networks (WSNs). Energy consumption and routing is the most challenging and demanding in designing routing protocol for WSNs. The authors develop LDCE routing protocol based on (Link Distance, link Cost and link Error). The paper focus on drawing benefits from interaction of physical, MAC and routing layers by defining new cross layer scheme (LDCE) which is energy efficient. They first study how link error rate affect retransmission and how it affects the choice between a path with a large number of short distance hop and another with smaller number of large distance hop. Simulation and results shows that LDCE can lead to up to 30% - 70% energy saving.