Patent ID: 8111665

Claim:
A method for determining, in a wireless cellular telecommunication network, if a handover of a half-duplex terminal has to be executed from a first base station to a second base station, each base station transferring signals in a respective cell, the half-duplex terminal, when being handled by one of the base stations, not transferring and not receiving signals during an idle period of the cell of the base station which handles the half-duplex terminal, the method comprising steps, executed by the first base station, of: transferring, to the half-duplex terminal, a downlink signal in the cell of the first base station; receiving a message transferred by the half-duplex terminal in response to the downlink signal transferred by the first base station, the message including information indicating quality measurements on the downlink signal transferred by the first base station and at least quality measurements on a downlink signal transferred by the second base station; obtaining information enabling the determination of a round trip delay between the half-duplex terminal and the second base station; determining the round trip delay between the half-duplex terminal and the second base station; and transmitting a handover notification message to the half-duplex terminal instructing the half-duplex terminal to execute a handover procedure from the first base station to the second base station upon determination that the quality measurements of the second base station are higher than the first base station and that the round trip delay between the half-duplex terminal and the second base station is less than the idle period of the second base station.