Abstract: The present invention relates to a user equipment device of a UMTS (Universal Mobile Telephone System) type mobile radio telecommunications system. The user equipment device (UE) works selectively in two modes of operation, a connected mode in which resources of the system are allocated to setting up a connection with the user equipment device and an idle mode. The user equipment device is identified in idle mode by a first identity (IMSI; TMSI; PTMSI) and in connected mode by a second identity. According to the invention, the user equipment device in connected mode is capable of processing messages in which it is identified by its first identity (IMSI; TMSI; PTMSI).

Abstract: The present invention relates to a UMTS (Universal Mobile Telephone System) type system of mobile radio telecommunications that is robust with respect to radio network controller failures: According to the invention, following a temporary interruption in operation of a radio network controller of the UTRAN network of the system and after the reinitialization of this radio network controller, the UTRAN network sends a piece of information to all the cells controlled by the reinitialized radio network controller or by its neighboring radio network controllers. This piece of information prompts the user equipment devices that are in these cells to make their presence known to the UTRAN network. According to the invention, the user equipment devices in connected mode are capable of processing said piece of information.

Abstract: A UMTS type mobile radio telecommunications system with improved management of its radio resources is disclosed, the system comprising a core network communicating by means of a UTRAN network with a plurality of user equipment. The core network including a mobile switching center or MSC and at least one serving GPRS support node or SGSN. The interface between the MSC and at least one SGSN is designed to give the SGSN the identity of the user equipment in the connected mode with the MSC. Furthermore, to page one of the user equipment in the connected mode with the MSC, the SGSN communicates with this user equipment through the MSC. The effect of this is to eliminate the unnecessary sending of paging messages through the paging channels of the system.

Abstract: A UMTS type mobile radio telecommunications system with improved management of its radio resources is disclosed, the system comprising a core network communicating by means of a UTRAN network with a plurality of user equipment. The core network including a mobile switching center or MSC and at least one serving GPRS support node or SGSN. The interface between the MSC and at least one SGSN is designed to give the SGSN the identity of the user equipment in the connected mode with the MSC. Furthermore, to page one of the user equipment in the connected mode with the MSC, the SGSN communicates with this user equipment through the MSC. The effect of this is to eliminate the unnecessary sending of paging messages through the paging channels of the system.

Abstract: The present invention relates to a user equipment device of a UMTS (Universal Mobile Telephone System) type mobile radio telecommunications system. The user equipment device (UE) works selectively in two modes of operation, a connected mode in which resources of the system are allocated to setting up a connection with the user equipment device and an idle mode. The user equipment device is identified in idle mode by a first identity (IMSI; TMSI; PTMSI) and in connected mode by a second identity. According to the invention, the user equipment device in connected mode is capable of processing messages in which it is identified by its first identity (IMSI; TMSI; PTMSI).

Abstract: The present invention relates to a UMTS (Universal Mobile Telephone System) type system of mobile radio telecommunications that is robust with respect to radio network controller failures: According to the invention, following a temporary interruption in operation of a radio network controller of the UTRAN network of the system and after the reinitialization of this radio network controller, the UTRAN network sends a piece of information to all the cells controlled by the reinitialized radio network controller or by its neighbouring radio network controllers. This piece of information prompts the user equipment devices that are in these cells to make their presence known to the UTRAN network. According to the invention, the user equipment devices in connected mode are capable of processing said piece of information.