Performance analysis of device state synchronisation for WiMedia MAC

In the UWB WiMedia MAC protocol, reservation slots called hard reservation slots and soft reservation slots allow for the medium to be used by the owner of the slots and also by non-owners while the owner is not accessing the medium. This raises a new problem: how do non-owners determine their device state in other owners´ slots? Proposed is a mechanism for synchronising device states in hard and soft reservation slots. Performance analysis is presented showing that the mechanism prevents device energy waste and channel throughput degradation.