Method for determining, in a wireless cellular telecommunication network, a wireless telecommunication device to which a hand-over of a mobile terminal has to be conducted, wherein plural wireless cellular telecommunication devices (HBS1a, HBS2, HBS3) transfer the same physical cell identity to mobile terminals, the method comprises the steps of: - receiving at least one measurement report on signals measured by a mobile terminal, - determining, from the at least one measurement report that a hand-over of the mobile terminal has to be conducted to a wireless telecommunication device which transfers the same physical cell identifier as the one transferred by at least another wireless telecommunication device, - obtaining a list of wireless telecommunication devices which transfers the same physical cell identifier, - reducing, using a fingerprint table and the at least one measurement report, the list of wireless telecommunication devices which transfers the same physical cell identifier, one fingerprint being a list of physical cell identifiers obtained from the at least one measurement report ordered or not according to the power strength of signals reported in the at least one measurement report or is a part of a set of physical cell identifiers obtained from the at least one measurement report, - starting the hand-over of the mobile terminal to at least one wireless telecommunication device which belongs to the reduced list of wireless telecommunication devices, - updating (S410, S412) the fingerprint table depending on the result of the hand-over, characterised in that a likelihood value is associated with each fingerprint in the fingerprint table, wherein if the hand-over to one wireless telecommunication device is unsuccessful, the method comprises further the step of decreasing the reliability value of the likelihood value associated to the fingerprint associated to the wireless telecommunication device and if the hand-over to one wireless telecommunication device is successful, the method comprises further the step of increasing the reliability value of the likelihood value associated to the fingerprint associated to the wireless telecommunication device. - receiving at least one measurement report on signals measured by a mobile terminal, - determining, from the at least one measurement report that a hand-over of the mobile terminal has to be conducted to a wireless telecommunication device which transfers the same physical cell identifier as the one transferred by at least another wireless telecommunication device, - obtaining a list of wireless telecommunication devices which transfers the same physical cell identifier, - reducing, using a fingerprint table and the at least one measurement report, the list of wireless telecommunication devices which transfers the same physical cell identifier, one fingerprint being a list of physical cell identifiers obtained from the at least one measurement report ordered or not according to the power strength of signals reported in the at least one measurement report or is a part of a set of physical cell identifiers obtained from the at least one measurement report, - starting the hand-over of the mobile terminal to at least one wireless telecommunication device which belongs to the reduced list of wireless telecommunication devices, - updating (S410, S412) the fingerprint table depending on the result of the hand-over, characterised in that a likelihood value is associated with each fingerprint in the fingerprint table, wherein if the hand-over to one wireless telecommunication device is unsuccessful, the method comprises further the step of decreasing the reliability value of the likelihood value associated to the fingerprint associated to the wireless telecommunication device and if the hand-over to one wireless telecommunication device is successful, the method comprises further the step of increasing the reliability value of the likelihood value associated to the fingerprint associated to the wireless telecommunication device.