Abstract: The invention relates to a cellular radio system wherein a communication terminal receives servo power instruction from a base station with which a radio communication comprising first uplink and downlink channels is established. In response to an instruction for changing a channel (13), the terminal records a first power level received from the base station and a reference power on which the terminal transmitted when the instruction was received. The terminal endeavours to continue communication on new uplink and downlink channels interrupting the transmission on the first uplink channel. If failed, the terminal evaluates a second power level received from the base station and restarts to transmit through the first uplink channel at a power determined according to the reference power and a variation between the first and second power level.

Abstract: The metal housing of the case of a contactor includes an annular rib extending continuously opposite the cylindrical periphery of the main stationary core, the rib having an internal diameter respectively greater than that of the ferrule and smaller than that of the housing, so as to ensure the locking of the different parts of the case and the crimping of the housing on the stationary magnet following local deformations exerted on the reduced diameter of the swaged part defining the rib.

Abstract: Method for controlling traffic over an interface between a base station and a radio network controller of a radiocommunication system, the base station being arranged for receiving information from terminals over radio channels and for forwarding said information to the radio network controller over said interface through at least one buffer having a limited size. According to the method, a level of traffic on said interface is estimated and the quantity of information forwarded to the radio network controller over said interface is varied according to the traffic level estimate.

Abstract: In order to cover a mobile telecommunication zone, an access network node comprises a first multisector antenna to transmit and receive in several first main directions on one and the same first fixed frequency each covering a first sector having on either side of the first main direction, a common border with another first sector. A second multisector antenna situated at the same place as the first multisector antenna makes it possible to transmit and receive in several second main directions on a second fixed frequency each covering a second sector having on either side of the second main direction, a common border with another second sector, each second main direction being on the axis of a border between two first sectors. A hard handover from the first to the second frequency is triggered for a mobile which is approaching a border common to two first sectors.

Abstract: A base station (BTS) for a wireless communications system comprises a transmit chain (CEM1, CCM 42, TRM 30, PA 24, 16-2, 12-2) for processing signals for transmission to terminals. The signals can include those for a common channel for transmission to terminals served by the base station, such as the Primary Common Pilot Channel (P-CPICH) of a UMTS system. N processing units (CEM1, CEM2, CEM3), where N>=2, generate the same signals for a common channel in parallel with one another. This has the advantage of increasing the ability of the base station to retain calls in the event of a failure in one of the processing units.

Abstract: In order to cover a mobile telecommunication zone, an access network node comprises a first multisector antenna to transmit and receive in several first main directions on one and the same first fixed frequency each covering a first sector having on either side of the first main direction, a common border with another first sector. A second multisector antenna situated at the same place as the first multisector antenna makes it possible to transmit and receive in several second main directions on a second fixed frequency each covering a second sector having on either side of the second main direction, a common border with another second sector, each second main direction being on the axis of a border between two first sectors. A hard handover from the first to the second frequency is triggered for a mobile which is approaching a border common to two first sectors.

Abstract: An infrastructure of a radiocommunication network transmits mobile station paging messages. Each paging message transmitted is preceded by a paging indication message comprising paging indication information identifying a mobile station intended to receive a request contained in the paging message. The paging indication message further comprises a repetition indication field to indicate whether the paging message contains at least one request already contained in a previously transmitted paging message.