| 摘要 |
PURPOSE: An ad-hoc communication system in a wireless network environment is provided to effectively transmit data and to minimize energy consumption of nodes by transmitting the data from a device node to a sync node. CONSTITUTION: A plurality of cluster nodes(40) receives data transmitted from a plurality of device nodes. A cluster head node(30) is connected to the plurality of the cluster nodes in order to cover a unit cluster area. The cluster head node transmits the data transmitted from the plurality of the cluster nodes by collecting the data. An infrastructure node(20) transmits the collected data by receiving the data from the cluster head. A sync node(10) receives the collected data transmitted from the infrastructure node. [Reference numerals] (AA) Syn node; (BB) Infra node; (CC) Cluster head node; (DD) Cluster node; (EE) Device node; (FF) Infra link; (GG) Cluster link
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