Abstract
Duty cycling is a common mechanism for achieving energy efficiency in WSNs. Over the past several years a number of researchers have proposed low-power duty-cycle MAC protocols, but the tradeoff between energy efficiency and latency has been remained a challenging issue. We propose the Express-MAC protocol (EX-MAC) which can guarantee the requirement of the end-to-end transmission latency while conserving energy in a wireless sensor network using asynchronous duty cycling. To achieve low latency operation, EX-MAC employs a wakeup time reservation that utilizes a short preamble scheme to reduce end-to-end latency and to minimize energy consumption. Also, EX-MAC supports multi-hop applications through a cross-layering API, and it provides convergecast packets with unidirectional interfaces to optimize performance and to support reconfiguration routing. In this paper, we first introduce WSNs and the problems in existing MAC protocols. Then we propose the EXMAC protocol for low end-to-end latency and power efficiency in WSNs. From simulation results, it is proven that EX-MAC is able to adjust its wakeup time reservation for convergecast traffic and to guarantee the requirement of endto- end latency.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
