Alcatel

Alcatel Lucent

Herve Maillard

Claire Bazin

Denis Rouffet

The invention refers to a method for establishing a radio connection () for transmitting and receiving data across one of a plurality of radio interfaces () of a mobile radio telecommunication terminal (). The multiple radio interfaces () serve for data transmission and reception across radio connections () according to various radio protocols within different sub-radio access networks (). The coverage of sub-radio access networks () is determined and the radio connection () is established across at least one of the available sub-radio access networks (). In order to establish a radio connection () for transmitting and receiving data across one of the plurality of radio interfaces () of the mobile radio telecommunication terminal () more efficiently without waste of energy and waste of bandwidth on the radio connections () the necessity for a determination of sub-radio access network () coverage is established and coverage of the sub-radio access networks () is determined only if determination of sub-radio access network () coverage is deemed to be necessary.

Method for selecting one of a plurality of radio interfaces of a mobile radio telecommunication terminal

The present invention concerns a method for providing multicast services to a group of at least two users belonging to or connectable to a discontinuous coverage network via their respective terminals. Method characterized in that it comprises at least the two following steps:

Method to provide multicast data transmission in a discontinuous network

Method for providing a transmission link includes providing a proxy equipment including cache or buffer, establishing a streaming connection or session between the proxy equipment and the mobile terminal, upon request of a service from the terminal requesting streaming data, receiving and storing at the equipment the requested streaming data from a server intended for the mobile terminal and forwarding the received and stored streaming data from the proxy equipment to the mobile terminal if the mobile terminal is detected to be under the coverage of and/or connected to the discontinuous coverage network, where when the request for the service by the mobile terminal is received by the proxy equipment, the proxy equipment establishes a continuous data and signaling transmission link with the server to receive the requested streaming data, and a discontinuous data transmission link with the mobile terminal to forward the received streaming data to the mobile terminal.

Method and system for providing a transmission link for streaming traffic

A telecommunication method for a telecommunication network providing discontinuous radio coverage is provided, in which the telecommunication network a plurality of cells, The method includes providing a data stream to a mobile terminal within the coverage of a first one of the plurality of cells, interrupting the data stream when the mobile terminal is moved outside the coverage, determining the location of the mobile terminal outside the radio coverage, predicting a second one of the plurality of cells to be the target cell of the mobile terminal, providing the data stream to a server being assigned to the second one of the plurality of the cells, resuming the data stream to the mobile terminal when the mobile terminal is within the coverage of the second one of the plurality of the cells.

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Igny, France

Herve Maillard