A method for use in a wireless telecommunications network comprising a core network, two or more base stations each providing wireless connectivity within a base station cell, and a terminal device configured to communicate wirelessly with the base stations by a communication mode, and the method being a positioning method for determining a position of the terminal device, comprises sending one or more positioning signals between the base stations and the terminal device during a transmission phase of the method, and using measured arrival times of the positioning signals to triangulate a position of the terminal device, wherein during the transmission phase the terminal device is in an energy saving communication mode.