A telecommunications method in a wireless communication network comprising a base station, a supplementary transmission unit and one or more user equipments, the supplementary transmission unit being initially in a dormant state in which it does not transmit; wherein based on the configuration from the base station the supplementary transmission unit measures a parameter of uplink transmission from the user equipment towards the base station; and a decision is made as to whether to activate the supplementary transmission unit in dependence upon the measured parameter.