Within the group research in to the MAC-Layer has focused on two areas, improving energy consumption in high capacity sensor networks and understand the impact of optical fibre transmission on wireless MAC.
- establishing for the first time the expected time for convergence to distributed time-division-multiple-access (TDMA) operation under the two main desynchronization models proposed in the literature and validating the derived estimates via a real-world implementation [1,2]
- proposing the extension of the main desynchronization models towards multi-channel operation; this is achieved by extending the concept of reactive listening to multi-frequency operation .
- proposed a low-overhead MAC protocol utilising adaptive spreading code length feature in the practical system level, and presented the first experimental evaluation of the network performance, which is able to deliver 139% more of the throughput while saving more than 50% of the power consumption [3,4].
- analyzing the energy consumption model for the distributed TDMA approach under the different transmission PDF and the variety of the type of the production data (work in progress).
Academics involved in the theme:
- D. Buranapanichkit and Y. Andreopoulos, "Distributed time-frequency division multiple access protocol for wireless sensor networks," IEEE Wireless Communications Letters, vol. 1, no. 5, pp.440-443, Oct. 2012.
- G. Smart, R. Surace, N. Deligiannis, V. Loscri, G. Fortino and Y. Andreopoulos, "Decentralized time-synchronized channel swapping for wireless sensor networks," Poster presented in 11th European Conference on Wireless Sensor Networks (EWSN 2014).
- F. Qin, J.E. Mitchell, "AS-MAC: Utilising the Adaptive Spreading Code Length for the MAC Protocol Design of WSNs", ACM Transactions on Sensor Networks Volume 10, Issue 1, Scheduled for publication February 15, 2014
- F. Qin, J. Mitchell, "Analyses of MAC Performance for Multi-Carrier based Wireless Sensor Networks", in 11th IEEE International Workshop on Wireless Local Networks (WLN), 2011.
- B. Kalantari-Sabat, M. Mjeku, N.J. Gomes, and J.E. Mitchell Performance impairments in single-mode radio-over-fiber systems due to MAC constraints. Journal of Lightwave Technology , 26 (15) pp. 2540-2548, 2008 (http://discovery.ucl.ac.uk/15128/1/15128.pdf)