DATA TRANSMISSION SPEED CONVERSION METHOD OF A SENSOR NODE CAPABLE OF IMPROVING A COMMUNICATION PERFORMANCE OF A SENSOR NODE

摘要

PURPOSE: A data transmission speed conversion method of a sensor node is provided to determine the data transmission speed of a sensor node without testing a specific communication distance test for constructing a sensor network.;CONSTITUTION: A sink node(Sa) collects an LQI(Link Quality Index) value according to each routing path of the sink node from a plurality of sensor nodes(S230). The sink node determines the data transmission speed according to the lowest LQI value in the collected LQI values(S240). The sink node confirms a normal communication in a data transmission speed determined by a plurality of sensor nodes(S250). When a plurality of the sensor nodes provides normal communication in the determined data transmission speed, the sink node converts the data transmission speed into a predetermined data transmission speed(S260).;COPYRIGHT KIPO 2013;[Reference numerals] (S210) LQI request message; (S220) LQI response message; (S230) Analyze the LQI response message and collect LQI values; (S240) Determine data transmission speed according to the lowest LQI value; (S250) Determine to convert the data transmission speed; (S260) Execute the conversion procedure of the data transmission speed