Based On Energy-balanced Opportunistic Flooding Protocol For Wireless Sensor Networks

Wireless sensor networks are composed by a large numbers of sensor nodes which aredeployed in a certain area. The communication between the wireless sensor nodes forms aself-organization network. The main functions of WSNs are detecting the environment,collecting information and sending the aggregated data to the sink node or base station.Since sensor nodes are generally battery-powered, and it is very hard to charge or replace thebattery, so the energy efficiency is a key issue in WSNs.For the simpleness, robustness and easy implementation of the traditional WSNs routingprotocol, it has been the first choice of WSNs, especially in the low processing ability sensornodes networks. Flooding is a classic routing protocol for WSNs. However, because of theproblem of“Information Explosion”and“Information Overlap”，we mostly use the improvedversions. Gossiping alleviate the“Information Explosion”problem but did nothing for the“Information Overlap”problem. SPIN routing protocol solve the problems by using a consultway which is effective and save energy consumption. However, the implementation procedureof SPIN routing protocol is relatively complex. Especially the“three times hand shake”inSPIN needs to spend unnecessary energy in the less data environment networks. Moreover, byusing traditional opportunistic flooding (OF) algorithm, the“bottleneck”nodes are burdenedwith heavy relay traffic via multi-hop communication and tend to die earlier and that leads tothe network being partitioned in low-duty-cycle wireless sensor networks. Based on the defectof OF algorithm, the new algorithm fully considers the link quality and node’s remainingenergy when selects the node to be the sender. It maintains the energy balance of the nodesand solves the problem of rapid death of“bottleneck”node due to large load. The simulation results shows new algorithm ensures a low end-to-end latency and high delivery rate,effectively extends the network lifetime and enhances the network reliability.