Alcatel Lucent

Joseph Blineau

Michel Cohen

Nicolas Chuberre

Olivier Courseille

Regis Duval

Christian Le Floch

Régis Duval

A terrestrial repeater, comprising i) an interface means configured to receive a first data stream originating from a first satellite transmission network, a second data stream originating from a second transmission network, and a third data stream originating from a third terrestrial transmission network, and to transform the received streams into data packets; ii) a first processing means configured to select at least one part of the data packets of at least one of the first, second, and third streams received, and to process each selected stream portion to place the data packets it comprises into a selected broadcast format; and iii) a second processing means configured to combine the selected and processed stream portions to constitute a set of packets to be broadcast, convert the set of packets into at least one radio frequency signal, and amplify the at least one radio frequency signal in order to broadcast wirelessly towards at least one radio communication terminal.

Multiple entry terrestrial repeater for a content broadcasting system

A method is devoted to synchronizing the transmission of user signals within a single-frequency hybrid network comprising at least one transmission satellite (SAT) and regenerative emitters (E-E) tasked with retransmitting received user signals to user terminals (T, T), using the same frequency and the same waveform. This method consists of temporally shifting, with respect to a time marker (TM) corresponding to the moment when a chosen element of the user signals arrives at a terrestrial reference arc (RA) from said satellite (SAT), the moment when the user signals received by each emitter (E-E) are retransmitted, by a local duration which is a function of the respective positions of the emitter and the satellite (SAT) with respect to a chosen reference position (RP) on said arc (RA), so that the same user signals retransmitted by the satellite (SAT) and the emitter (Ei) reach a user terminal (T, T) at roughly the same time.

Method for synchronzing user signal transmissions within a hybrid communication network

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Velizy, France

Joseph Blineau