Aspects of the disclosure provide a solution that a user equipment can avoid unnecessary transmission of uplink radio link control protocol data units and transition between Radio Resource Control states in a Universal Mobile Telecommunications System network, thereby reducing signaling and power consumption overhead and latency at the UE. These hollow beams support the solar panels on a top surface and accommodate drainage along the beams. A locking mechanism is at least partially disposed within the body. The transducer transforms electrical impulses into vibrations. The plurality of decision functions includes zero-th\u02dc-th decision functions to decide whether at least a part of at least one of X-dimensional face ) of the N-dimensional cuboid is included in the -dimensional surface. Said sealing device comprises at least one annular body which sits on a roll neck, encompasses said roll neck, and is provided with at least one outward-extending lip that rests in a sealing manner against a stationary part during rotation of the roll.