A receiver, wherein the receiver (UE 1 -UE 3 , 104 1 -104 2 , 212, RX) is configured to receive and process a radio signal , the radio signal comprising at least a first frequency band (SC) and a second frequency band (D1), the first frequency band (SC) including a first signal , the second frequency band (D1) including a second signal , and each of the first signal and the second signal comprising a plurality of frames (226, M-frame), each frame (226, M-frame) having a plurality of subframes (200, M-subframe), wherein one or more of the subframes (200, M-subframe) of the first signal comprises connecting information allowing a receiver (UE 1 -UE 3 , 104 1 -104 2 , 212, RX) to establish a connection with a wireless communication system, wherein all of the subframes (200, M-subframe) of the second signal are free of any connecting information so that a receiver (UE 1 -UE 3 , 104 1 -104 2 , 212, RX) listening only to the second signal cannot set up a connection with the wireless communication system, wherein the receiver (UE 1 -UE 3 , 104 1 -104 2 , 212, RX) is configured to establish the connection with the wireless communication system using the connecting information, and, after having established the connection with the wireless communication system and responsive to system information indicating the second frequency band (D1), to operate in the second frequency band (D1), and wherein the second frequency band for the receiver is randomly assigned from a plurality of frequency bands, the receiver being configured to use the randomly assigned frequency band for a random access channel, RACH. wherein the receiver (UE 1 -UE 3 , 104 1 -104 2 , 212, RX) is configured to receive and process a radio signal , the radio signal comprising at least a first frequency band (SC) and a second frequency band (D1), the first frequency band (SC) including a first signal , the second frequency band (D1) including a second signal , and each of the first signal and the second signal comprising a plurality of frames (226, M-frame), each frame (226, M-frame) having a plurality of subframes (200, M-subframe), wherein one or more of the subframes (200, M-subframe) of the first signal comprises connecting information allowing a receiver (UE 1 -UE 3 , 104 1 -104 2 , 212, RX) to establish a connection with a wireless communication system, wherein all of the subframes (200, M-subframe) of the second signal are free of any connecting information so that a receiver (UE 1 -UE 3 , 104 1 -104 2 , 212, RX) listening only to the second signal cannot set up a connection with the wireless communication system, wherein the receiver (UE 1 -UE 3 , 104 1 -104 2 , 212, RX) is configured to establish the connection with the wireless communication system using the connecting information, and, after having established the connection with the wireless communication system and responsive to system information indicating the second frequency band (D1), to operate in the second frequency band (D1), and wherein the second frequency band for the receiver is randomly assigned from a plurality of frequency bands, the receiver being configured to use the randomly assigned frequency band for a random access channel, RACH. <EOS>