Method and a device for transferring a flow of data by a first telecommunication device to a second telecommunication device

A method for transferring a flow of data by a first telecommunication device to a second telecommunication device in a wireless cellular telecommunication network, the first and second telecommunication devices being linked through a radio channel, the method being executed by the first telecommunication device, the method comprising steps of:

• splitting the flow of data in at least two splits, each split corresponding to different portions of the flow of data;
• transferring a first split directly to the second telecommunication device through the radio channel that links the first and second telecommunication devices;
• transferring at least a second split to the second telecommunication device via at least a third telecommunication device, the third telecommunication device being a first base station of the wireless cellular telecommunication network, the first telecommunication device being a mobile terminal, and the second telecommunication device being a second base station of the wireless cellular telecommunication network;
• measuring signals transferred by plural base stations;
• transferring to the second base station a measurement report representative of the measurements;
• receiving a message comprising information related to a radio channel to be setup between the mobile terminal and a third base station;
• establishing the radio channel between the mobile terminal and the third base station;
• splitting the flow of data in an incremented number of splits;
• transferring a supplementary split to the second base station via the third base station through the established radio channel;
• receiving a message requesting the release of the radio channel established between the mobile terminal and the first base station;
• checking if data transferred through the radio channel between the mobile terminal and the first base station have not been acknowledged by the first base station;
• transferring the non acknowledged data to the second base station through another radio channel;
• releasing the radio channel established between the mobile terminal and the first base station;
• and
• splitting the flow of data into a reduced number of splits.

A device for transferring a flow of data by a first telecommunication device to a second telecommunication device in a wireless cellular telecommunication network, the first and second telecommunication devices being linked through a radio channel, wherein the device is included in the first telecommunication device, the device comprising:

• means for splitting the flow of data in at least two splits, each split corresponding to different portions of the flow of data;
• means for transferring a first split directly to the second telecommunication device through the radio channel that links the first and second telecommunication devices;
• and
• means for transferring at least a second split to the second telecommunication device via at least a third telecommunication device, the third telecommunication device being a first base station of the wireless cellular telecommunication network, the first telecommunication device being a second base station of the wireless cellular telecommunication network, and the second telecommunication device being a mobile terminal;
• means for receiving, from the mobile terminal, a measurement report on signals transferred by plural base stations;
• means for determining, from the measurement report, if the flow of data has to be split in a more important or less important number of splits, and if the flow of data has to be split in a more important number of splits,
• means for establishing establishes a link between the second base station and a third base station which transferred signals on which measurement reported by the mobile terminal are upper than a given value,
• means for obtaining obtains from the third base station information related to a radio channel between the third base station and the mobile terminal,
• means for transferring transfers the information related to the radio channel between the third base station and the mobile terminal, to the mobile terminal,
• means for splitting splits the flow of data into an incremented number of splits, and
• means for transferring transfers a supplementary split to the mobile terminal via the third base station through the established link.

A device for transferring a flow of data by a first telecommunication device to a second telecommunication device in a wireless cellular telecommunication network, the first and second telecommunication devices being linked through a radio channel, wherein the device is included in the first telecommunication device, the device comprising:

• a splitter configured to split the flow of data in at least two splits, each split corresponding to different portions of the flow of data;
• a transferring unit configured to transfer a first split directly to the second telecommunication device through the radio channel that links the first and second telecommunication devices;
• a transferring unit configured to transfer at least a second split to the second telecommunication device via at least a third telecommunication device, the third telecommunication device being a first base station of the wireless cellular telecommunication network, the first telecommunication device being a second base station of the wireless cellular telecommunication network, and the second telecommunication device being a mobile terminal;
• a receiving unit configured to receive, from the mobile terminal, a measurement report on signals transferred by plural base stations;
• a determining unit configured to determine, from the measurement report, if the flow of data has to be split in a more important or less important number of splits, and if the flow of data has to be split in a more important number of splits,
• an establishing unit establishes a link between the second base station and a third base station which transferred signals on which measurement reported by the mobile terminal are upper than a given value,
• an obtaining unit obtains from the third base station information related to a radio channel between the third base station and the mobile terminal,
• a transferring unit transfers the information related to the radio channel between the third base station and the mobile terminal, to the mobile terminal,
• a splitter splits the flow of data into an incremented number of splits, and
• a transferring unit transfers a supplementary split to the mobile terminal via the third base station through the established link.