Abstract: A method for establishing an IPCON Mission Critical Data Internet Protocol Connectivity MCData session in a communications network according to the 3GPP MCS 3rd Generation Partnership Program Mission Critical System standard. The network includes an emitting MCData entity, a destination MCData entity and an MCData transport service connected to the emitting and destination MCData entities. The method includes obtaining, from the emitting MCData entity, a DPPK MCData Payload Protection Key and a DPPK-ID MCData Payload Protection Key Identifier, transmitting a SIP-INVITE message comprising the DPPK key and the DPPK-IK key identifier, from the emitting MCData entity to the destination MCData entity via the MCData transport service, authenticating the message, by the destination MCData entity, and determining the DPPK key and the DPPK-ID key identifier, by the destination MCData entity, and establishing an IP tunnel between the emitting MCData entity and the destination MCData entity.

Abstract: A method for distributing a file in a network according to the 3GPP standard includes transmitting, by the first client entity, a file distribution request including the first address, modifying, by the gateway, in the file distribution request, the first address to a second address, transmitting the file distribution request including the second address to the second content server, modifying, by the second content server, the second address in the request to a third address, transmitting the request including the third address to the second client entity, transmitting, by the second client entity, a request to download the file comprising the third address to the content server, receiving, by the second client entity, the file, and storing, by some entities, correspondences between the addresses.

Abstract: A method for discriminating, by a first destination client entity, requests in a communication network according to the 3GPP MCS “3rd Generation Partnership Program Mission-Critical System” standard, wherein the requests received by the destination client entity include a first mission-critical service request originating from the non-controlling server of the second communication group and a second mission-critical service request originating from the non-controlling server of the third communication group, each request received including at least one piece of belonging group information of the non-controlling server emitting the request.

Abstract: A communication network according to the 3GPP MCS (3rd Generation Partnership Project Mission Critical Services) standard includes at least one first communication group, plurality of user devices each having knowledge of the first communication group, at least one first communication group management server managing the first communication group via a group document specific to the first communication group, the first communication group management server allowing each user device of the plurality of user devices to communicate in the first communication group, the global communication group document including at least one group geographical parameter, the group geographical parameter defining a geographical zone in which the user device of the plurality of user devices is affiliated with the first communication group.

Abstract: A method for distributing a file in a network according to the 3GPP standard includes transmitting, by the first client entity, a file distribution request including the first address, modifying, by the gateway, in the file distribution request, the first address to a second address, transmitting the file distribution request including the second address to the second content server, modifying, by the second content server, the second address in the request to a third address, transmitting the request including the third address to the second client entity, transmitting, by the second client entity, a request to download the file comprising the third address to the content server, receiving, by the second client entity, the file, and storing, by some entities, correspondences between the addresses.

Abstract: A method for initiating an MCData communication within a regroup of communication groups, the method being implemented by a network according to the 3GPP MCS standard, wherein an MCData communication may include short data messages or file distribution. In addition, some information is added in the different transmissions to allow additional verifications by the different entities.

Abstract: A method implemented by a client transmitting entity included in a network according to the 3GPP MCS standard, the client transmitting entity being configured to transmit content intended for a client receiving entity included in the network and being affiliated with a same communication group, the method including selecting a security context from among: a security context with endpoint diversity formed by: a long master key identifier formed by the GMK-ID and the DMK-ID, or a short master key identifier formed by the GMK-ID or a short master key identifier formed by the GUK-ID or no master key identifier. A security context without endpoint diversity formed by: a short master key identifier formed by the GMK-ID or no master key identifier.

Abstract: A method implemented by a client transmitting entity included in a 3GPP MCS (3rd Generation Partnership Program Mission Critical Services) standard network, the client transmitting entity being configured to transmit a plurality of contents intended for at least one client receiving entity included in the network, the client transmitting entity and the client receiving entity being affiliated with a same communication group, the method including generating, by the client transmitting entity, a group user key identifier, the group user key identifier being specific to the communication group and being used to encrypt the content, the generation being repeated each time a predetermined event takes place.

Abstract: A method for monitoring the connection between a first node and a second node of a communication network, includes selecting a session established between the first node and the second node, the selected session becoming a monitoring session, monitoring the connection between the first node and the second node via the monitoring session.

Abstract: A communication network enabling a plurality of user devices to access communication services, the communication being a private communication or a communication within a multimedia group to which at least one user device of the plurality of user devices is affiliated, the communication network including at least one dedicated signalling group making it possible to announce to at least one user device of the plurality of user devices affiliated to the dedicated signalling group the availability of at least one service for the dedicated signalling group.

Abstract: An interoperability device to interconnect at least two communication networks, each including at least one local server defining and managing at least one local communication group including a plurality of local user equipment, the pluralities of user equipment having no user equipment in common, the interoperability device including s multimedia group management module, configured to: define a global communication group comprising the two local communication groups, generate and distribute an encryption key of the global communication group to the first and to the second local server, and a communication services management module configured to: manage the floor control seizure during each group communication within the global communication group and apply a network policy comprising communication rules defined by configuration.

Abstract: A method for configuring access by a user to fallback communication services, includes sending by an application client an authentication request to an identity management server; and in the event of rejection: the identity management server allocates a fallback identifier and sends the fallback identifier to the application client; the application client sends a request for fallback user profile to a configuration management server; the application client sends a request for fallback multimedia group profiles to a multimedia group management server; the application client sends a request for fallback multimedia group encryption keys and private communications encryption keys to an encryption keys management server; once the application client has received the fallback user profile, the fallback multimedia group profile(s), the fallback multimedia group encryption key(s) and the private communications encryption key(s), the user can access the fallback communication services.

Abstract: An interoperability device to interconnect at least two communication networks, each including at least one local server defining and managing at least one local communication group including a plurality of local user equipment, the pluralities of user equipment having no user equipment in common, the interoperability device including s multimedia group management module, configured to: define a global communication group comprising the two local communication groups, generate and distribute an encryption key of the global communication group to the first and to the second local server, and a communication services management module configured to: manage the floor control seizure during each group communication within the global communication group and apply a network policy comprising communication rules defined by configuration.

Abstract: A communication network enabling a plurality of user devices to access communication services, the communication being a private communication or a communication within a multimedia group to which at least one user device of the plurality of user devices is affiliated, the communication network including at least one dedicated signalling group making it possible to announce to at least one user device of the plurality of user devices affiliated to the dedicated signalling group the availability of at least one service for the dedicated signalling group.

Abstract: A communication network allowing at least one user device, thanks to configuration information, to access communication services, the communication being a private communication or a communication within a multimedia group with which the user device is affiliated, the communication network including a plurality of servers, wherein the configuration information of the user device is configured in each server to which the user device is authorised to access.

Abstract: A method for monitoring the connection between a first node and a second node of a communication network, includes selecting a session established between the first node and the second node, the selected session becoming a monitoring session, monitoring the connection between the first node and the second node via the monitoring session.

Abstract: A method of communication between a first communicating entity and an application server, includes establishing a first sequence of exchanges of candidates; generating a first transmission channel establishing a first application session; detecting by a first communicating entity a new access network including a second gateway, resulting in the establishment of a second sequence of exchanges of new candidates; automatic configuring the configurable gateway so as to modify the correspondence between the source address of the second NAT gateway with the peer reflexive address of the NAT gateway which is configurable from the history of the candidates sent by the communicating entity; generating a second transmission channel maintaining the first application session.

Abstract: 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.

Abstract: A method for configuring access by a user to fallback communication services, includes sending by an application client an authentication request to an identity management server; and in the event of rejection: the identity management server allocates a fallback identifier and sends the fallback identifier to the application client; the application client sends a request for fallback user profile to a configuration management server; the application client sends a request for fallback multimedia group profiles to a multimedia group management server; the application client sends a request for fallback multimedia group encryption keys and private communications encryption keys to an encryption keys management server; once the application client has received the fallback user profile, the fallback multimedia group profile(s), the fallback multimedia group encryption key(s) and the private communications encryption key(s), the user can access the fallback communication services.

Abstract: 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.