THE METHOD FOR COLLECTING DATA OF WIRELESS SENSOR NETWORK

摘要

PURPOSE: An information collective method of a wireless sensor network is provided to minimize the hop count in which the information collected in the wireless sensor network is delivered to a final information capture node. CONSTITUTION: A sensor node(300) broadcasts the information request message to a neighbor sensor node by multiplying the hop count(S317). In case the hop count included in the information request message is smaller than present hop count, the sensor node establishes an optimum root by using the information included in the information request message(S323). If a candidate root exists and the hop count included in the information request message is smalls than the hop count saved in the candidate root, the sensor node decides whether the candidate root is same as the address of the host node of the optimum root(S337). The sensor node establishes the candidate root as the optimum root.