Flag-bit based co-operative communication to avoid energy holes in Wireless Sensor Network

摘要

In Wireless Sensor Network, near by sink nodes face heavier traffic load because of many to one traffic pattern along with irregular data flow rate in multi-hop transmission scenario. Therefore energy depletion rate is very high at near by sink nodes that leads to creation of energy holes. Consequently, the life time of wireless sensor network is affected(depreciated). In this work, a flag bit based co-operative transmission mechanism is proposed to avoid the energy hole problem using circular corona based network. In co-operative transmission, each node is helped by its previous corona node to forward data to the next node. Firstly, sensor nodes are distributed non-uniformly in the network area. After that, We investigate the nodes with higher energy depletion rate. By using flag bit we take advantage of cooperative communication based transmission strategy to avoid energy hole problem. Finally, proposed methodology reduces the uneven energy extravagance at near by sink nodes and magnify the network life time. Simulation results show that our action plan avoid the energy holes by reducing the energy consumption and maximize the stability of sensor network.