Patent ID: 6704578
Filing Date: 2004-03-09
Classification: H04W

Abstract:
A telecommunication system for mobiles having a network of base stations to which the mobiles can be connected, wherein a mobile connected to one base station of the network of base stations sends to the one base station user signals and power control commands in order that the one base station controls its own transmission power so that the power received therefrom by the one mobile is equal to a predetermined value, the telecommunications system also having means so that the mobile connected to at least one initial base station is, during a handover phase, still connected to the at least one initial base station and to target base station, comprising:each base station to which the mobile is connected regularly transmits to the-a subset of base stations to which the mobile is liable to be connected during a handover phase, a mean value of its transmission power; and one of the subset of base stations, at the moment of the start of the handover phase, deduces, from the mean value and from the power control commands it receives from the mobile, an instantaneous value of power emitted by the at least one initial base station at this moment, and initializes its own transmission power to a value derived from the instantaneous power, wherein the value includes an offset equal to a difference between an integrated value of the received commands, between a time of reception by the target base station of the command for starting the handover phase and the time of starting the handover phase, and a mean value of the integrated value, between the time of reception by the target base station of the command for starting the handover phase and the time of starting the handover phase.