An efficient network merging mechanism for WiMedia UWB MAC protocol

WiMedia UWB MAC protocol defines to use wide bandwidth and low power to communicate data for high speed in short range. WiMedia UWB MAC configures a fully distributed beaconing network based on non-infrastructure and devices broadcast their beacons through each beacon slot in a superframe which is made up of 256 MAS. Due to changes in the propagation environment, mobility, or other effects, devices using two or more unaligned BPSTs may come into range. This situation causes synchronization problem which is solved by merging two networks with different BPSTs. Although they make progress for merger, they don't have any criterion about a network to move. Therefore merging process of WiMedia MAC is inefficient. In this paper, we propose a criterion for an efficient network merger mechanism for WiMedia UWB MAC Protocol and demonstrate good performance of our scheme by simulation.