Elapsed time on arrival: a simple and versatile primitive for canonical time synchronisation services

摘要: Time synchronisation is one of the most important and fundamental middleware services for wireless sensor networks. However, there an apparent disconnect between existing time implementations actual needs current typical network applications. To address this problem, we formulate a set canonical distilled from applications propose general application programming interfaces providing them. We argue that these can be implemented using simple time-stamping primitive called Elapsed on Arrival (ETA) provide two such implementations. The Routing Integrated Synchronisation (RITS) extension ETA over multiple hops. It reactive protocol used to correlate event detections at or more locations within microseconds. Rapid (RATS) proactive timesync utilises RITS achieve network-wide with microsecond precision rapid convergence. Our work demonstrates it possible build high-performance suggests complex mechanisms may unnecessary meet many real world