The study of power control based cooperative opportunistic routing in wireless sensor networks

This paper presents PC-CORP (power control based cooperative opportunistic routing protocol) for WSN (wireless sensor networks), providing robustness to the random variations in network connectivity while ensuring better data´s forwarding efficiency in an energy efficient manner. Based on realistic radio model, we combine the region-based routing, rendezvous scheme, sleep discipline and cooperative communication to model data forwarding by cross layer design in WSN. At the same time, a lightweight transmission power control algorithm PC- AIMD is introduced to utilize the cooperation of relay nodes to improve the forwarding efficiency performance and increase robustness of routing protocol. In simulation, the performance of PC-COPR is investigated from perspectives of adaptation of variations in network connectivity and satisfying QoS requirements of application.