Airbus Ds Sas

Christophe Leraut

Eric Georgeaux

Frédéric Fraysse

Christophe Gruet

A method allows determination of a frequency interval for the emission, by an item of user equipment, of a signal to be sent to a base station in a telecommunications network, the frequency interval being within a predetermined frequency band over which the base station works, the method including the determination of frequency interval, wherein the determination of the frequency interval is achieved from a table of references including maximum power reduction values for the emission of a signal by the item of user equipment so that the power of the signal emitted by the item of user equipment at a predetermined out-of-band frequency is less than a predetermined maximum power limit value.

Method and system for determining an interval of frequencies in a telecommunications network

A filtering device intended for being connected to a portable mobile terminal compatible with a PMR network having a wide range of receiving frequencies B, includes a fastening system for fastening to the mobile terminal, a first radio-frequency connector intended for engaging with a radio-frequency connector of the mobile terminal, a first channel including a first filter for filtering a first receiving useful band Bincluded within the band B, and a second radio-frequency connector intended for engaging with a removable RF antenna to transmit or receive radio-frequency signals.

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Montigny le Bretonneux, France

Christophe Leraut