Cassidian Sas

Bull Sas

Airbus Ds Sas

Airbus Defence and Space Sas

Air Lynx

Laurent Pison

Olivier Paterour

Gérard Marque-Pucheu

Christophe Gruet

François Dubois

Didier Raffenoux

Eric Georgeaux

Hervé Gromat

Arthur Lallet

Frédéric Risy

Maxime Delorme

Olvier Paterour

A mobile structure () of a radio-communication system is disclosed, comprising a mounted radio scanner () using means for measuring radiofrequency signals integrated in its radio equipments (-) or in a specific device for measuring the radiofrequency signals emitted in its immediate environment () and for enabling the detection and possible identification of at least one other third-party structure () located in this immediate environment.

Radio scanner mounted in a radio-communication system mobile structure

A method includes for at least one mobile terminal connected to a base station of the infrastructure, obtaining of at least once characteristic of at least one radio-communication signal occupying a frequency band used by the base station and the mobile terminal to communicate with each other and received by the mobile terminal or by the base station; searching, using the at least one characteristic of a disturbance in the frequency band; and, if a disturbance is detected in the frequency band, decreasing a transmission power of the base station at least in a transmission frequency band used by the base station to transmit radio-communication signals to at least one connected mobile terminal.

Method for the reduction of interference caused by a private mobile radio-communication network infrastructure, the associated software and base station of a private mobile radio-communication network infrastructure

The invention relates to a communication system () comprising a local mobile communication terminal () and a remote mobile communication terminal (), configured to establish a direct mode link after prior authentication of the remote mobile communication terminal, the local mobile communication terminal () further comprising:

System and method for managing authentication for the direct communication between mobile communication terminals of a mobile radio communication system

A private mobile radio network installation includes a plurality of devices each including a local private mobile radio network infrastructure including a core network module, a subscriber server and a base station module; a management system; and a network interface; wherein the devices are connected therebetween via their network interfaces, and wherein the management systems are configured to choose one of the devices; and connect the base station module of each device to the core network module of the chosen device to form a distributed private mobile radio network infrastructure.

Installation of a private mobile radiocommunication network, method for forming such an installation and associated computer program

Provided is the use of HSS servers () of a local mobile structure () and a remote mobile structure (), as well as the USIM card () of a link entity (), and thus also an MME emulator () in order to manage security and in particular the right of the link entity of a given mobile structure to connect with a link entity of another mobile structure, when the link entities establish a backhaul-type data transport link in direct mode between the two mobile structures.

Device and method for managing the mutual authentication for the direct communication between mobile structures of a mobile radio communication system

A radiocommunications system (E) that implements a method for attachment between a mobile radiocommunications network (RM) and a remote radiocommunications network (RD). The infrastructure of each of the mobile radiocommunications network and remote radiocommunications network includes a network supervision (SUPM, SUPD), an application level (NAPM, NAPD) having at least one application (APM, APD), an authentication and mobility management level (NAMM, NAMD) and user terminals (TUM, TUD). A radio management level (NCRM, NCRD) is also included having at least one base station (BSM, BSD).

Method of attachment between at least one mobile network and one remote network

A structure for integrating mobile services, includes a top structure and a bottom structure, the top structure including: a device suitable for selecting, according to selection criteria, a service domain so as to determine whether a requested application, such as voice applications, SDS applications, or IP data applications, belongs to the domain of legacy services or IP service; a device capable of managing the various requests; and a device capable of providing APIs for the voice, SDS, and IP applications, the bottom structure including: a unit for IP routing towards the wireless network, ensuring the IP routing of data to the suitable IP networks, configured so as to take into account the configuration of the network, the user profile, and the provision of QoS and security; and a unit for managing users, in particular in terms of user registration, deregistration, mobility and security, such as the use of the SSO.

Structure for integrating mobile services

A method for initializing a call for a mobile terminal including PTT applications on an IP-WAN cellular network, the method including, for each user of the mobile terminal connected to an IP-WAN modem intended to register for a group call: upon starting up the IP-WAN modem, connecting the mobile terminal to the IP-WAN cellular network; when a PTT client is active and has obtained an IP address of a PTT server, initiating by the PTT client a procedure for registering a SIP with the PTT server on a default IP-WAN carrier; performing by the PTT client a procedure for affiliation to a call group with the PTT server on the default IP-WAN carrier, and as soon as the procedure for affiliation to the call group is performed, executing an 'INVITE' (SIP) procedure to RTP resources at an application level on a PTT side and on the PTT client side, to allow the establishment of the RTP session after the affiliation of the PTT client to the group.

Fast method of initializing a call for an application of PTT type on an IP-WAN cellular network

A communication method of a first device over a first radio communication link of a first communication network and a second device over a second radio communication link of a second communication network, includes a step of suspending, during a suspension time interval, transmission of a first signal by the first device over the first radio communication link; and a step of receiving, with the second device, a second signal over the second radio communication link during the suspension time interval.

Suspending emission of a signal

A method for attachment and authentication of a user terminal of a home type radiocommunication network with a visited type radiocommunication network, the home network including home means for attachment to a packet network and the visited network including: at least one visited base station able to ensure radio transmission and reception with user terminals located in at least one visited cell attached to the visited base station; visited authentication and control means of user terminals able to authenticate the user terminals attached to the network; and at least one visited distribution gateway ensuring radio reception and transmission with the at least one visited base station.

Method for attachment and authentication of a user terminal with a visited network

Radio resources are dynamically allocated in a shared band communication system operating in direct mode (DMO). The communication system includes terminals organized in groups. Each group is allocated a resource from a number of resources available within the communication system. This process includes allocating to the group at least one other further resource from the number of resources until an attempted access to the further resource from the group to which the further resource had been allocated has been detected.

Method for asynchronously allocating a bandwidth, and an electronic communication device implementing this method

The invention relates to a radio-communication system for Push-to-Talk applications, comprising: a narrow-band PMR-technology terminal capable of connecting, via a radio-electric interface, to a narrow-band network infrastructure for accessing, via a PTT server, a set of narrow-band PTT resources or applications; and a wide-band-technology terminal capable of connecting, via a radio-electric interface, to an IP-WAN network for accessing, via a server, a set of wide-band PTT resources or applications, wherein said terminal comprises a client PTT application on the IP-WAN network configured to establish an IP connection between the terminal and a PTT server over the IP-WAN via an interface, such that said terminal can access the narrow-band PTT resources or applications and establish a communication channel with the terminal.

Digital radio-communication system for changing a narrow-band infrastructure and terminals into a wide-band infrastructure and terminals

A method for attaching a user terminal to a packet network via a meshed radiocommunications network infrastructure includes selecting a host packet network dedicated to at least a category of users to which a user terminal belongs based on a second user identification code of the meshed network and/or access information pertaining to rights for attachment of user terminals to at least one packet network. The method finds an application in all types of infrastructure of meshed radiocommunications networks and finds a particularly interesting application in the case of PMR type professional radiocommunications networks.

Method for attaching a user terminal to a packet network

A transmission of information is established between an emitting mobile terminal and at least one receiving mobile terminal of the same group of terminals pertaining to a shared-resource radiocommunication network operating in a direct mode includes the step of emitting by the emitting terminal of a transmission request to inform the other receiving terminals of the group of its intention to transmit information. Each receiving terminal of the group then determines whether, on the basis of at least one pre-defined selection strategy, it will accept the transmission of information. If it will, the receiving terminal transmits a return signal comprising data relating to the emitting terminal to the other terminals of the group. Then, the emitting terminal checks whether it respects the transmission conditions. If it does, the emitting terminal transmits the information to the other terminals in its group via at least one resource allocated to the group.

Method for establishing a transmission between mobile terminals of the same group pertaining to a shared-resource radiocommunication network operating in a direct mode

A method of configuring modules for identifying users of a telecommunication network able to cover a service area cut into a plurality of geographical sub areas, each identification module including an identification code stored in the identification module, the identification code including: &#x2014;an operator identifier; &#x2014;a user identification number; the method including assigning at least one operator identifier to each geographical sub area, the operator identifiers of two contiguous geographical sub areas being different and at least two non-contiguous geographical sub areas having an identical operator identifier.

Growing community of inventors

Jouars Ponchartrain, France

Laurent Pison