“…Consequently, the network congestion could be greatly alleviated and the serve life of sensor nodes could be prolonged. Scheduling can be carried out in a periodic manner, an aperiodic manner or a random manner while the transmission is only activated when some specific events occur [93]. Representative protocols involve event-triggered (ET) protocols, try-once-discard (TOD) protocols, Round-Robin (RR) protocols, as well as stochastic communication (SC) protocols.…”