Apparatuses, systems, and methods for MAC behavior and RRC configuration of uplink wakeup
signal (UL WUS) for a connected UE, e.g., in 5G NR systems and beyond. A UE may receive, from a
base station, an indication of resources for an UL WUS. The UE may also receive, from the
base station, one or more trigger conditions for transmission of the UL WUS. The indication may include a prohibit
timer and maximum transmission number per UL WUS resource. The resources for the UL WUS may be periodic or aperiodic UL resources. The one or more trigger conditions for transmission of the UL WUS may be received via a
system information block or via
radio resource control signaling. The UE configure the UL WUS based, at least in part, on the indication of resources for the UL WUS and the one or more trigger conditions for transmission of the UL WUS.