SYSTEM AND METHOD FOR MANAGING DSME NETWORK FLUCTUATION IN INDUSTRIAL WIRELESS SENSOR NETWORK

摘要

An apparatus for managing deterministic and synchronous multi-channel extension (DSME) network fluctuations in an industrial wireless sensor network includes: a network congestion rate measurer configured to measure a network congestion rate on the basis of a number of times an association request message is received and a number of times carrier sensing is performed, a DSME-guaranteed time slot (GTS) allocation information collector configured to continuously collect DSME-GTS allocation information using coordinators, a DSME-GTS maintenance determiner configured to determine whether to maintain or collect DSME-GTSs on the basis of collected network information, a slot reallocation determiner configured to determine whether data is received without collision from two nodes to which a slot is redundantly allocated and transmit a DSME-GTS expiration request to a sensor node for reallocation of empty slots.