Paratus Law Group, PLLC
System and method for managing DSME network fluctuation in industrial wireless sensor network
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.
Pusan National University Industry-University Cooperation Foundation
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Sanghwa Yunsung
Chung Lee