A GTS scheduling for consensus problems over IEEE 802.15.4 wireless networks

This paper presents consensus problems over IEEE 802.15.4 wireless networks. The IEEE 802.15.4 protocol defines the Medium Access Control (MAC) and the physical layer (PHY) for Low-Rate Wireless Personal Area Networks (LR-WPANs). The IEEE 802.15.4 MAC protocol supports the beacon-enabled mode that enables real-time communication by allocating Guaranteed Time Slots (GTSs) to a designated node in a network. Despite a number of work on cooperative control, consensus problems over wireless networks remains less well understood. In this paper, we propose a modified version of the standard IEEE 802.15.4 protocol where each agent communicates through a PAN coordinator with a superframe structure. We consider a branch-and-bound GTS scheduling algorithm for non-preemptive communication tasks under the modified IEEE 802.15.4 protocol. The simulation result shows that each agent can successfully communicate with each other and achieve a consensus by the proposed GTS scheduling algorithm.