Abstract: The beacon-enabled mode is effective in improving real-time performance of wireless sensor networks (WSNs). Keeping cluster heads and members synchronised in cluster-tree networks becomes challenging in presence of beacon collisions. In this paper, we study a collision-free multichannel superframe scheduling problem. We first formulate this problem in the satisfiability modulo theories (SMT) specification. It can be solved by an SMT solver but with limited scalability. Then, we present two more efficient approaches. Our results show that the proposed approaches can significantly improve the schedulability of superframes compared to the existing approach. Finally, we implement a real system based on a wireless network for industrial automation-process automation (WIA-PA) network to show the feasibility of our proposal. Keywords: WSNs; wireless sensor networks; cluster-tree networks; beacon-enable mode; beacon collisions; superframe scheduling. Reference to this paper should be made as follows: Jin, X., Zhang, Q., Zeng, P., Kong, F. and Xiao, Y. (2014) 'Collision-free multichannel superframe scheduling for IEEE 802.15.4 cluster-tree networks', Int.
The paper REF studies a collisionfree multichannel superframe scheduling problem for WIA-PA.
Collision-free multichannel superframe scheduling for IEEE 802.15.4 cluster-tree networks
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Computer Science