Abstract: A method for synchronizing the transmission of messages in a communication system comprises a user terminal, a main communication network comprising a first station, and a secondary communication network comprising a second station, the method consisting of an exchange of synchronization signals to calculate an offset to be applied to the instant of emission of the messages transmitted by the second station so that the messages transmitted by the first station and the second station are received by the user terminal in a synchronous manner. A communication system implementing the invention is provided.

Abstract: A method for synchronizing the transmission of messages in a communication system comprises a user terminal, a main communication network comprising a first station, and a secondary communication network comprising a second station, the method consisting of an exchange of synchronization signals to calculate an offset to be applied to the instant of emission of the messages transmitted by the second station so that the messages transmitted by the first station and the second station are received by the user terminal in a synchronous manner. A communication system implementing the invention is provided.

Abstract: A system for bidirectional data transmission in a telecommunication network comprises at least two distinct access networks to a mobile terminal, comprising at least one hybridation gateway that is configured to constitute an access point to each of the access networks, and to perform at least: control functions for all of the access networks, selection functions for the access network or networks selected for the data transmission, network layer functions, and data link layer functions, and wherein each of the access networks comprises at least one access gateway configured to perform at least physical layer functions.

Abstract: The present invention provides a cellular wireless communication system, a cellular wireless communication device and a method for managing the receipt of a handover command, where in instances that the synchronization of the target base station of a handover command has been relatively recently lost, the mobile station will not attempt to execute a handover, and will indicate a handover failure without having attempted to execute the handover.

Abstract: The present invention provides a cellular wireless communication system, a cellular wireless communication device and a method for managing the receipt of a handover command, where in instances that the synchronization of the target base station of a handover command has been relatively recently lost, the mobile station will not attempt to execute a handover, and will indicate a handover failure without having attempted to execute the handover.