A user equipment comprising: a receiver, which in operation, is configured to receive an uplink scheduling assignment from a radio base station that controls the user equipment, the uplink scheduling assignment indicating uplink radio resources usable by the user equipment, wherein the user equipment is configured with at least one numerology scheme, each of which is associated with parameters that partition a plurality of time-frequency radio resources of a mobile communication system into resource scheduling units in a different manner, wherein resource scheduling units of one numerology scheme differ from resource scheduling units of another numerology scheme by having a different frequency bandwidth and/or time length, and wherein the user equipment is configured with a plurality of logical channels each of which is associated with at least one of the configured numerology schemes, a processor, which in operation, is configured to determine for which numerology scheme the received uplink scheduling assignment is intended based on the received uplink scheduling assignment, and the processor, which in operation, is configured to perform a logical channel prioritization procedure by allocating the assigned uplink radio resources to the configured logical channels and by prioritizing those of the configured logical channels that are associated with the numerology scheme for which the uplink scheduling assignment is intended, wherein the processor is configured to determine for which numerology scheme the received uplink scheduling assignment is intended from a numerology layer indication within the received uplink scheduling assignment. a receiver, which in operation, is configured to receive an uplink scheduling assignment from a radio base station that controls the user equipment, the uplink scheduling assignment indicating uplink radio resources usable by the user equipment, wherein the user equipment is configured with at least one numerology scheme, each of which is associated with parameters that partition a plurality of time-frequency radio resources of a mobile communication system into resource scheduling units in a different manner, wherein resource scheduling units of one numerology scheme differ from resource scheduling units of another numerology scheme by having a different frequency bandwidth and/or time length, and wherein the user equipment is configured with a plurality of logical channels each of which is associated with at least one of the configured numerology schemes, a processor, which in operation, is configured to determine for which numerology scheme the received uplink scheduling assignment is intended based on the received uplink scheduling assignment, and the processor, which in operation, is configured to perform a logical channel prioritization procedure by allocating the assigned uplink radio resources to the configured logical channels and by prioritizing those of the configured logical channels that are associated with the numerology scheme for which the uplink scheduling assignment is intended, wherein the processor is configured to determine for which numerology scheme the received uplink scheduling assignment is intended from a numerology layer indication within the received uplink scheduling assignment.