Wireless sensor network (WSN) is a group of small sensor nodes deployed for physical environment measurement. The main features of these small sensor nodes are their limited capabilities in term of the energy reserve, the processing ability and the memory storage. So that, the data gathering protocols design for WSN is a crucial challenge since those protocols should be simple, energy-aware, and scalable. They should also be self-configurable to node failures and changes of the network topology dynamically. In this paper, we present a new algorithm for gathering sensor readings based on short chain forming. To allow network lifetime extension, the short chain is used, instead of starting from the furthest node and using greedy algorithm as PEGASIS do. Thus, the network lifetime is increased compared to PEGASIS, which is proved through simulation results.
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