A user equipment, UE,, comprising: a first radio module having first receiver circuitry, the first receiver circuitry arranged to receive first signals in a first frequency band of a first mobile communication system associated with a first beamwidth, and processor circuitry coupled to the first receiver circuitry: a second radio module having second receiver circuitry, the second receiver circuitry arranged to receive second signals comprising frame alignment signals from a second base station in a second frequency band of a second mobile communication system associated with a second beamwidth, wherein the first signals are received from a first base station and comprise a frame synchronization period for timing synchronization between communication frames in the first and second communication systems (2240, 2250); and wherein the processor circuitry is arranged to synchronize a frame in the first frequency band with a frame in the second frequency band based on the frame synchronization period; wherein the processor circuitry is coupled to the second receiver circuitry, and arranged to activate the second receiver circuitry to receive the frame alignment signals based on the frame synchronization period. a first radio module having first receiver circuitry, the first receiver circuitry arranged to receive first signals in a first frequency band of a first mobile communication system associated with a first beamwidth, and processor circuitry coupled to the first receiver circuitry: a second radio module having second receiver circuitry, the second receiver circuitry arranged to receive second signals comprising frame alignment signals from a second base station in a second frequency band of a second mobile communication system associated with a second beamwidth, wherein the first signals are received from a first base station and comprise a frame synchronization period for timing synchronization between communication frames in the first and second communication systems (2240, 2250); and wherein the processor circuitry is arranged to synchronize a frame in the first frequency band with a frame in the second frequency band based on the frame synchronization period; wherein the processor circuitry is coupled to the second receiver circuitry, and arranged to activate the second receiver circuitry to receive the frame alignment signals based on the frame synchronization period. a second radio module having second receiver circuitry, the second receiver circuitry arranged to receive second signals comprising frame alignment signals from a second base station in a second frequency band of a second mobile communication system associated with a second beamwidth, wherein the first signals are received from a first base station and comprise a frame synchronization period for timing synchronization between communication frames in the first and second communication systems (2240, 2250); and wherein the processor circuitry is arranged to synchronize a frame in the first frequency band with a frame in the second frequency band based on the frame synchronization period; wherein the processor circuitry is coupled to the second receiver circuitry, and arranged to activate the second receiver circuitry to receive the frame alignment signals based on the frame synchronization period.