Discovery strategies for a directional wake-up radio in mobile networks

This chapter describes a long-range directional wake-up radio (LDWuR) for wireless mobile networks. In contrast to most of the wake-up radios (WuRs) available to date, which are of short range, the proposed LDWuR is applicable to long-range deployments. Existing studies achieved long communication distance using modulation and coding schemes or directional antennas, although the latter require exploring the direction of the transmitter. To address this issue, the proposed LDWuR adopts both static and dynamic antennas, where the static ones are directional, while the dynamic ones are omnidirectional for beamforming. Theoretical analysis shows that our design can explore the transmitter's direction with the same average power consumption, thereby enhancing the node performance.