Communications devices and methods for selecting a wireless access interface

A communications device for transmitting data to or receiving data from a mobile communications network, the mobile communications network including infrastructure equipment, the infrastructure equipment providing a wireless access interface for transmitting signals to or receiving signals from the communications device, the communications device comprising

• a transmitter for transmitting signals representing the data via a serving wireless access interface provided by a selected infrastructure equipment to the mobile communications network,
• a receiver for receiving signals representing the data via the serving wireless access interface provided by the selected infrastructure equipment,
• a controller for controlling the transmitter and the receiver to select one of the wireless access interfaces of the infrastructure equipment as the serving wireless access interface, wherein one or more of the selected infrastructure equipment or one or more neighbouring infrastructure equipment provide an enhanced wireless access interface providing a facility for transmitting or receiving signals at a lower power relative to a wireless access interface which is not enhanced, and the controller is configured in combination with the transmitter and the receiver
• to generate a signal reception metric for each of the wireless access interfaces provided by the one or more neighbouring infrastructure equipment and for each of the wireless access interfaces provided by the selected infrastructure equipment, and
• to select or reselect one of the wireless access interfaces provided by the one or more neighbouring infrastructure equipment or one of the wireless access interfaces provided by the selected infrastructure equipment in accordance with predetermined criteria based on the generated signal reception metrics.