SENSOR NODE AND METHOD FOR DISTRIBUTING CONDITION TABLE THEREIN

摘要

PURPOSE: A condition table separation method in a sensor node for separating a condition table is provided to minimize message transmission amount for the join operation of the sensed data by utilizing the storage space of each sensor node. CONSTITUTION: A sensor node receives a condition table from a parent node(202). The sensor node calculates a start number and an end number in a record to store(204). The sensor node extracts the record within the condition table by the use of the start number and the end number(206). In case a child node of the sensor node exists, the sensor node transmits the condition table to the child node(208).