Method and System of processing multiple-queries for application services of USN middleware

摘要

PURPOSE: A method and a system of processing multiple-queries for application services of USN(Ubiquitous Sensor Network) middleware are provided to improve the performance of the system through a middleware scheduler processing method depending on each query processing priority by classifying the kinds of queries. CONSTITUTION: According to the characteristics of queries, a scheduler is classified into 3 sectors. A real-time query sector(172) processes an emergency state recognition processing query and a real-time request query. A repeated query sector(174) processes a state query processing request query and an event request query. An event query sector(176) processes the event which is repeated periodically, and a multi query processing schedule module(170) applies an additional priority to each query sector.