H2B2H protocol for addressing link failure in WSN

Abstract

Wireless sensor networks are constructed using more number of sensor nodes. The distributed nature of this network has several QoS issues and these are addressed by the clustered QoS routing protocol. Due to the dynamic nature of the wireless sensor network the nodes may move from one position to another position. If the moved node is a header node and it is not in the communication range of its neighbor header, then there will be link breakage between two header nodes. Once such link failure occurs, then single network will be partitioned into two different networks. They cannot communicate each other and it leads to packet dropping. Existing methods addresses link failure by rerouting protocols. But it will take time to construct rerouting. To address this issue, a Header to base station and base station to header (H2B2H) protocol is proposed. When there is a link failure between two header nodes, that is, between predecessor CH and successor CH, the proposed protocol will be automatically invoked. According to the proposed H2B2H protocol, the predecessor will send the data to the base station. The base station has information about all the nodes. So the base station will take the responsibility to forward the data to the destination group cluster head. The simulation results show that the performance of the proposed algorithm increases throughput, packet delivery rate, network life time and decreases the packet dropping rate, end to end delay, energy consumption of header nodes and routing overheads.