For a wireless sensor network (WSN) with a large number of inexpensive sensor nodes, energy efficiency is the major concern in\ndesigning network structure and related algorithms. If network collects sensor data using mobile sinks, object tracking mechanism\nmust consider the energy efficiency of sensor nodes in the networks as a whole. Recently research works on WSNs with mobile sinks\napply prediction techniques for sink tracking in order to improve tracking precision while keeping the number of active nodes to the\nminimum. In this paper, we analyze existing works for sink tracking in WSNand propose P-LEACH that is cluster-based prediction\ntechnique for WSN with mobile sinks. Simulation results show that P-LEACH performs better than previous techniques in terms\nof energy saving of sensor nodes and data transmission performance.
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