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In this paper, we present a new duty-cycle media access control(MAC) protocol, called Long-chain MAC protocol (LC-MAC), that exploits a mechanism for relay nodes booking in advance and transmitting in a burst manner in order to reduce the end-to-end delivery delay in a long-chain sensor network scenario without sacrificing energy efficiency. In LC-MAC, a super SYNC frame can travel across multiple...
In this paper, we propose TA-MAC, a duty cycle MAC protocol with traffic adaptive for sensor networks. Through dynamically increasing extra transmission cycle in original basic cycle, TA-MAC can forward more packets in single cycle when traffic loads increase. The simulation results in ns-2 shows that our protocol achieves lower end-to-end delivery latency over S-MAC and the mean time, energy efficiency...
Ultra-wideband (UWB) is expected to be the transmission technology of future wireless personal area networks (WPANs), carrying various multimedia streams. Recently, the WiMedia Alliance has launched its standard for UWB WPANs, where the prioritized channel access (PCA) protocol is specified to provide differentiated medium access control (MAC) in a distributed manner. For time-sensitive multimedia...
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