Logical channel allocation method in wireless sensor network

PURPOSE: A logical channel allocation method in a wireless sensor network is provided to increase the number of available channels of the network by defining a logical channel in a wireless sensor network environment, thereby maximizing channel usefulness of the network through setup of a logical channel through node density estimation. CONSTITUTION: A node checks a channel overlapped with a logical channel of a node among nodes in an interference range(401). Channel negotiation is initialized(403). When a node identification of the node is smaller than a corresponding node identification of the overlapped channel, the node has a priority(405). A detected node re-selects a logical channel(407). When the node identification of the node is larger than the corresponding node identification, the node selects its logical channel(409).