Abstract: Communication systems and methods are provided allowing a single mode mobile terminal to support mobile assisted signal strength measurement operations in both a fixed frequency reuse based communication network and an adaptive channel allocation based communication network. Candidate base station signal strength measurements are requested by a fixed frequency reuse type network, measured by the mobile terminal and provided to the fixed frequency reuse type network which is seeking to identify a strongest signal for mobile assisted handover operations. In addition, interference signal strength measurements are requested by an adaptive channel allocation type network, measured by the mobile terminal and provided to the adaptive channel allocation type network by the mobile terminal. No redundant circuitry is required in the mobile terminal.

Abstract: A request to access the network sent by a terminal is intercepted and a selective restriction criterion is evaluated on the basis of parameters relating to the intercepted access request. A radio signal is sent to jam an acknowledgment signal sent by the network in response to the access request if the selective restriction criterion is satisfied.

Abstract: Instant messaging client capable of taking part in a group of instant messaging clients arranged for, when in communication mode, exchanging information with the other instant messaging clients of the group through an instant messaging server in a communication network. The instant messaging client comprises means for entering, staying in or leaving a silent mode in which it is registered to the instant messaging server but receives no information sent by the other instant messaging clients of the group.

Abstract: The invention concerns a communication system comprising a radio unit, several terminal facilities and a local administration server. The radio unit comprises a first communication interface with the terminal facilities, a second radio communication interface with a cellular network, a module for identifying a subscription to the cellular network and device for handover of multiple user streams between the cellular network and the respective terminal facilities connected to the first interface. when the subscription is identified by said module. The local administration server comprises device for communication with the terminal facilities, independent of the cellular network, to supervise the exchanges over the first communication interface.

Abstract: The invention relates to a method of controlling radio resources allocated to a mobile terminal in a cellular system. According to the invention, radio measurements relating to propagation conditions between the terminal and a group of base stations in the cellular system are obtained. The aforementioned measurements are analysed and used to select at least one base station and establish a radio link between said station and the terminal in order to carry out the communication. The cellular system comprises a first and a second group of base stations which are used to communicate respectively using a first and a second network. The two aforementioned groups comprise a common sub-group of shared base stations.

Abstract: Communication systems and methods are provided allowing a single mode mobile terminal to support mobile assisted signal strength measurement operations in both a fixed frequency reuse based communication network and an adaptive channel allocation based communication network. Candidate base station signal strength measurements are requested by a fixed frequency reuse type network, measured by the mobile terminal and provided to the fixed frequency reuse type network which is seeking to identify a strongest signal for mobile assisted handover operations. In addition, interference signal strength measurements are requested by an adaptive channel allocation type network, measured by the mobile terminal and provided to the adaptive channel allocation type network by the mobile terminal. No redundant circuitry is required in the mobile terminal.

Abstract: The invention concerns a cellular system comprising a network core (10) including switches (11-13) and subscriber management means (14) and a radio access network (20) connected to the network core and including base stations (21) capable of radio communication with mobile stations (30) comprising each a terminal (31) associated with a subscriber identification module, for sending to the network core a warning message identifying a mobile station for which a dysfunction has been detected. When such an warning message identifying a mobile station is received, the network core queries the mobile station, so as to find out the identity of its terminal which is then recorded in a database of the network.

Abstract: The invention concerns a method wherein a radio link control stage processes separately first data units containing information items of a specific type and second data units not containing information items of said type. A control stage for access to the media delivers the first data units through a first dedicated transport channel and the second data units through a second dedicated transport channel. The data units delivered through said dedicated transport channels are supplied to an encoding and multiplexing stage to form at least a train of symbols relative to a dedicated physical channel and supplied to a radio transmission stage. The encoding and multiplexing stage and/or the radio transmission stage ensure greater protection against noise through the first dedicated transport channel than through the second dedicated transport channel.

Abstract: A request to access the network sent by a terminal is intercepted and a selective restriction criterion is evaluated on the basis of parameters relating to the intercepted access request. A radio signal is sent to jam an acknowledgment signal sent by the network in response to the access request if the selective restriction criterion is satisfied.

Abstract: The invention concerns a method wherein a radio link control stage processes separately first data units containing information items of a specific type and second data units not containing information items of said type. A control stage for access to the media delivers the first data units through a first dedicated transport channel and the second data units through a second dedicated transport channel. The data units delivered through said dedicated transport channels are supplied to an encoding and multiplexing stage to form at least a train of symbols relative to a dedicated physical channel and supplied to a radio transmission stage. The encoding and multiplexing stage and/or the radio transmission stage ensure greater protection against noise through the first dedicated transport channel than through the second dedicated transport channel.

Abstract: The invention concerns the dynamic reservation of resources according to the RSVP protocol for transmitting an application flow in the form of first packets between a radio terminal and a remote unit interconnected via a first IP network and a cellular radio communication system. The cellular radio communication system uses a second IP network, or even a third IP network, in its core network. According to the invention, the dynamic reservation of resources in the first IP network is completed by a second dynamic reservation of resources in the second IP network, and where necessary a third dynamic reservation of resources in the third IP network. For this, transmission elements of the cellular radio communication system perform the association between the tunnel identity used for transmitting the first packets of the application flow and the parameters assigned to each RSVP session.