EeRCCA:An Energy Efficient Range Based Coverage Control Algorithm in Wireless Sensor Networks
Tingting Hu · Chuangan jishu xuebao · 2009
Aiming at early death of border nodes and imbalance of energy load at existing coverage control algorithm RBSS in wireless sensor networks,an improved distributed energy efficient coverage control algorithm(EeRCCA)is proposed.EeRCCA adopts a joint strategy of multi-starting and adaptive energy competition in staring node election to reduce early death of border nodes.An adaptive back-off method based on the weight of residual energy and distances from staring node and other neighbor cooperative nodes is adopted to adjust the back-off time appropriately for electing the cooperative nodes.The validity of EeRCCA in different network size and node density is verified,simulation results show that EeRCCA can guarantee complete coverage and connectivity and its performance of number of working nodes and coverage ratio is approximately equal to RBSS.Compared with RBSS,EeRCCA can extend the network life significantly without additional control overheads.