Efficient Data Gathering Mechanism for Mobile Sink node in ZigBee Network

In wireless sensor network, sensors distributed at specific regions sense some data, and a sink node collects data from source nodes. The sink node can be one or few. By supporting mobility, the sink node can stay in different sensor networks, and can gather specific data that is needed. Recently, many researchers and companies like IEEE 802.15.4 working group and ZigBee alliance are trying to implement sensor networks to apply it to real world. However, the selection mechanism of sink nodes supporting mobility to gather sensed data has not been addressed sufficiently. In this paper, we design a mobile sink node selection mechanism which can collect data sensed in ZigBee-based network for processing information.