As the use of wireless sensor networks (WSNs) becomes widespread, node density tends to increase. This poses a new challenge for Medium Access Control (MAC) protocol design. Although traditional MAC protocols achieve low-power operation, they use only a single channel which limits their performance. Several multi-channel MAC protocols for WSNs have been recently proposed. One of the key observations is that these protocols are less energy efficient than singlechannel MAC protocols under light traffic conditions. In this paper, we propose an energy efficient multichannel MAC protocol, Y-MAC, for WSNs. Our goal is to achieve both high performance and energy efficiency under diverse traffic conditions. In contrast to most of previous multi-channel MAC protocols for WSNs, we implemented Y-MAC on a real sensor node platform and conducted extensive experiments to evaluate its performance. Experimental results show that Y-MAC is energy efficient and maintains high performance under high-traffic conditions.
Y-MAC REF is another recently proposed multichannel MAC protocol designed for WSNs that is based on scheduled access.
Y-MAC: An Energy-Efficient Multi-channel MAC Protocol for Dense Wireless Sensor Networks
2008 International Conference on Information Processing in Sensor Networks (ipsn 2008)
2008 International Conference on Information Processing in Sensor Networks (ipsn 2008)
Computer Science