The teachings present a method performed in a network node for configuring a device for radio communication in uplink and downlink between the network node and the device. The method comprises: configuring the device with a primary cell on a first radio channel at a first carrier frequency f1 with a first frequency bandwidth B1 for time division duplexed communication in uplink and downlink; configuring the device with a secondary cell on a second radio channel at a second carrier frequency f3 with a second frequency bandwidth B3, wherein the secondary cell is adjacent to the primary cell and configured for downlink communication only; and configuring the device to support and to monitor the second radio channel, the configuration comprising a priority list according to which the device is to perform the monitoring. The teachings also disclose corresponding network node, methods in a device, and corresponding devices.