Abstract: The apparatus (D) is dedicated to managing momentarily radio link interruptions between mobile stations (MS-i) and at least one radio network controller (BSC) of a radio access network (RAN) of a communications network. The apparatus comprises firstly detector means (DM) capable of detecting a radio link interruption between a mobile station (MS-i) and a radio network controller (BSCn), and secondly control means (CM) capable, on an interruption being detected by the detector means (DM), of ordering the radio network controller (BSCn) to suspend the radio link and then to attempt reactivate the radio link in application of a selected timetable.

Abstract: A telecommunication node (1), comprises a local base station (3) capable of emitting beacon signals so as to be detected by adjacent radio terminals, a local radio terminal (4) with means for detecting beacon signals to detect a base station adjacent to said local radio terminal, and radio link management means to enable setting up of a radio link (2) between said communication node and at least a remote communication node including at least an element chosen among the group consisting of a base station adjacent to said local radio terminal and a radio terminal adjacent to said local base station. A radio receiver is capable of receiving configuration data defining air support resources to be allocated to a local base station on a low speed radio channel.

Abstract: A method for providing wireless broadband communication to a high-speed movable vehicle, in particular to a high-speed train (2), is described, said method comprising the steps of: Arranging Worldwide Interoperability for Microwave Access (WIMAX) base stations (6) along a route (1) the vehicle (2) moves along, Arranging Wireless Local Area Network (WLAN) hot spots (5) along the route (1) between said WIMAX base stations (6), Upon detection of a vehicle speed (vv) above a predefined speed threshold (vth) establishing a communication (10) to said vehicle (2) using said WLAN hot spots, Upon detection of a vehicle speed (vv) below said speed threshold (vth) establishing a communication to said vehicle (2) over said WIMAX base stations (6). Furthermore a communication network to be used to execute the method mentioned above, plus a computer program product causing a computer to perform said method is described.

Abstract: A method and system for synchronizing terrestrial nodes equipped with GNSS (Global Navigation Satellite System) receiver belong to a terrestrial network. Synchronization is achieved by selecting terrestrial node to be synchronized to form a synchronization zone. The clear sky view solid angle shared by the terrestrial nodes is determined. The terrestrial nodes acquire a rough time reference sent by a satellite that can be viewed by the terrestrial nodes in the clear sky view solid angle. A common synchronization date is determined for all the terrestrial nodes. And, at the common synchronization date all the terrestrial nodes acquires a predefined sequence from the satellite. The terrestrial nodes uses this sequence to adjust the reference time.

Abstract: A method for providing wireless broadband communication to a high-speed movable vehicle, in particular to a high-speed train (2), is described, said method comprising the steps of: Arranging Worldwide Interoperability for Microwave Access (WIMAX) base stations (6) along a route (1) the vehicle (2) moves along, Arranging Wireless Local Area Network (WLAN) hot spots (5) along the route (1) between said WIMAX base stations (6), Upon detection of a vehicle speed (vv) above a predefined speed threshold (vth) establishing a communication (10) to said vehicle (2) using said WLAN hot spots, Upon detection of a vehicle speed (vv) below said speed threshold (vth) establishing a communication to said vehicle (2) over said WIMAX base stations (6). Furthermore a communication network to be used to execute the method mentioned above, plus a computer program product causing a computer to perform said method is described.

Abstract: The apparatus (D) is dedicated to managing momentarily radio link interruptions between mobile stations (MS-i) and at least one radio network controller (BSC) of a radio access network (RAN) of a communications network. The apparatus comprises firstly detector means (DM) capable of detecting a radio link interruption between a mobile station (MS-i) and a radio network controller (BSCn), and secondly control means (CM) capable, on an interruption being detected by the detector means (DM), of ordering the radio network controller (BSCn) to suspend the radio link and then to attempt reactivate the radio link in application of a selected timetable.

Abstract: A system (D) is dedicated to managing the changing of channels between a network controller (BSCn) and at least one network equipment (MS-i) in a communications network. The system includes management means (M) that are adapted, when a connection for sending and/or receiving data has been set up on a first channel (C1) between the network controller (BSCn) and the network equipment (MS-i), to instruct the network controller (BSCn), firstly, to send the network equipment (MS-i) a message on the first channel (C1) instructing it to continue the connection on a second channel (C2) and to maintain the first channel (C1) until it receives data and/or acknowledgments of data from the equipment (MS-i) on the second channel (C2), and, secondly, to release the resources associated with the first channel (C1) on receiving data and/or acknowledgments of data on the second channel (C2).

Abstract: The invention relates notably to a method for synchronizing terrestrial nodes comprising means for receiving information from a satellite belonging to a global navigation satellite system, said terrestrial nodes belonging to a terrestrial network, said method comprising the steps of: