Abstract:
PURPOSE: A hybrid clustering based data aggregation method for multi-target tracking in a wireless sensor network is provided to transmit sensing information about multiple targets to a sync node through multiple backbone nodes in order to distribute workloads to the nodes. CONSTITUTION: If the calculated number of hops is more than a first reference value, a cluster head is selected from other sensor nodes which sense a target and a temporarily constructed cluster(S705). If the calculated number of hops is smaller than a first reference value and more than a second reference value, the cluster head of a predetermined corresponding cluster(S702). Target sensing information is transmitted to the cluster head so that the cluster head integrates the target sensing information of sensor nodes which construct the cluster and transmits the information to a backbone node(S706).
Abstract:
The root terminal according to the present invention is a root terminal forming a multi-hop wireless network along with multiple wireless terminals, and includes the following parts: a first transmission/reception device measuring the condition of the current channel; a second transmission/reception device measuring the channel quality of one or more candidate channels excluding the current channel; and a control part which dynamically changes the channel of the multiple wireless terminals based on the condition of the current channel and the channel quality of the one or more candidate channels. [Reference numerals] (200) Route terminal;(AA) Internet;(BB,CC,EE,FF,GG,HH,II) Wireless terminal;(DD) Communication disrupting element