Minimizing broadcast latency and redundancy in ad hoc networks
Proceedings of the 4th ACM international symposium on Mobile ad hoc networking & computing
Timing-sync protocol for sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Medium access control with coordinated adaptive sleeping for wireless sensor networks
IEEE/ACM Transactions on Networking (TON)
Versatile low power media access for wireless sensor networks
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
WiseMAC: an ultra low power MAC protocol for the downlink of infrastructure wireless sensor networks
ISCC '04 Proceedings of the Ninth International Symposium on Computers and Communications 2004 Volume 2 (ISCC"04) - Volume 02
X-MAC: a short preamble MAC protocol for duty-cycled wireless sensor networks
Proceedings of the 4th international conference on Embedded networked sensor systems
DW-MAC: a low latency, energy efficient demand-wakeup MAC protocol for wireless sensor networks
Proceedings of the 9th ACM international symposium on Mobile ad hoc networking and computing
A survey and projection on medium access control protocols for wireless sensor networks
ACM Computing Surveys (CSUR)
Journal of Network and Computer Applications
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Medium access control (MAC) protocols play a crucial role in energy efficiency, latency reduction for sensor networks. Although some existing MAC protocols have achieved certain performance improvements, there are great potentials for further performance enhancement. In this paper, we propose a new MAC protocol called AS-MAC by introducing an Adaptive Scheduling (AS) period into the operational cycle within which the nodes' active duration is made adaptive to variable traffic load thus enabling AS-MAC to resiliently schedule data transmission in the sleep period. The algorithm is designated to schedule more data transmission in bursty and high traffic load, thus enabling rapid dissemination of data and reduction of latency. While under the light traffic load, nodes enter the sleep mode timely, mitigating idle listening and saving energy. Experiment results show that the proposed protocol is a great advancement of some existing protocols on the performance for both unicast and broadcast scenarios. Especially, under heavy unicast traffic load, AS-MAC can reduce end-to-end delay by about 65% and lowers energy consumption by about 40% compared to DW-MAC, while keeping nearly 100% packet delivery ratio.