ROUTE LOAD CONTROL ROUTING SYSTEM AND METHOD IN MESH/TREE RADIO SENSOR NETWORK

摘要

PURPOSE: A path load control routing system of a mesh or tree based wireless sensor network and a method thereof are provided to extend the life of a wireless sensor network by distributing the data processing of each sensor node in the setup of the wireless sensor network. CONSTITUTION: A data collecting unit(110) collects RSSI(Received Signal Strength Indicator) information, hop number information, and connected child node number information. When a registration request signal is received from a neighbor node, a data transmission or reception unit(120) transmits a link response signal including the hop number information and the child sensor node number information to the corresponding sensor node. An optimal path setting unit(130) calculates the link costs of a parent sensor node through the child sensor node number information received from the parent sensor node. The optimal path setting unit sets the parent sensor node including the minimum link costs as the optimal path. [Reference numerals] (10) Sensor node #1; (100) Sensor node #3; (110) Data collecting unit; (120) Data transmission/reception unit; (130) Optimal path setting unit; (AA) Sensor node #2; (BB) Sensor node #8; (CC) Sensor node #9; (DD) Sensor node #4; (EE) Sensor node #5; (FF) Sensor node #6; (GG) Sensor node #7; (HH) Sensor node #10; (II) Sensor node #11; (JJ) Sensor node #12