Methods, apparatus and system for handover of UE

A method for handover of a User Equipment (UE) in a wireless communication network, a service connection being made via the UE, comprising:

• handing over the UE from a normal cell to a first fast cell after the first fast cell and a radio bearer therein are set up when a measured moving speed of the UE exceeds a threshold;
• setting up, at a base station, a second fast cell and a radio bearer therein same as the first fast cell when the UE is leaving the first fast cell for the second fast cell adjacent to the first fast cell;
• releasing the radio bearer of the UE in the first fast cell after the UE leaves the first fast cell, and releasing the first fast cell if all the radio bearers are released in the first fast cell;
• and
• re-registering, at the base station, the UE into an adjacent normal cell when the service connection is terminated, or
• handing over the UE to the adjacent normal cell from the second fast cell when the measured moving speed of the UE is below the threshold, wherein fast cells are cells configured along a railway.

A network controller for handover of a User Equipment (UE) in a wireless communication network, a service connection being made via the UE, comprising:

• a receiver adapted to receive information of a measured UE moving speed;
• and
• a processor adapted to,
• if fast cells are set up as base stations starts up, instruct to hand over the UE from a normal cell to a first fast cell with a radio bearer set up therein when the measured UE moving speed exceeds a threshold, set up a same radio bearer at a second fast cell as the radio bearer sets at the first fast cell when the UE is leaving the first fast cell for the second fast cell adjacent to the first fast cell, release the radio bearer at the first fast cell after the UE leaves the first fast cell, and re-register the UE into an adjacent normal cell when the service connection is terminated, or hand over the UE to the adjacent normal cell from the second fast cell when the measured moving speed of the UE is below the threshold;
• and
• if fast cells are not set up as base stations starts up, the processor adapted to follow the same procedures as above except setting up the first fast cell or the second fast cell before setting up a corresponding radio bearer in the first or the second fast cell, and releasing the first or the second fast cell after releasing all the radio bearers in the first or the second fast cell,
• wherein the fast cells are cells configured along a railway.

A base station for handover of a User Equipment (UE) in a wireless communication network, a service connection being made via the UE, comprising:

• a transmitter adapted to measure and transmit information of a UE moving speed periodically;
• and
• a processor adapted to,
• if fast cells are set up as base stations starts up, set up a same radio bearer at a second fast cell as the radio bearer sets up at a first fast cell when the UE is leaving the first fast cell for the second fast cell adjacent to the first fast cell and a measured moving speed is exceeding a threshold, and release the radio bearer at the first fast cell after the UE leaves the first fast cell;
• if fast cells are not set up as base stations starts up, the processor adapted to follow the same procedures as above except setting up the first or the second fast cell before setting up a corresponding radio bearer in the first or the second fast cell, and releasing the first or the second fast cell after releasing all the radio bearer in the first or the second fast cell,
• wherein the fast cells are cells configured along a railway.

A system for handover of User Equipment (UE) in a wireless communication system, comprising:

• a UE;
• a network controller including:
• a receiver adapted to receive information of a measured UE moving speed;
• and
• a network controller processor adapted to,
• if fast cells are set up as base stations starts up, instruct to handover the UE from a normal cell to a first fast cell with a radio bearer set up therein when the measured UE moving speed exceeds a threshold, set up a same radio bearer at a second fast cell as the radio bearer sets up at the first fast cell when the UE is leaving the first fast cell for the second fast cell adjacent to the first fast cell, release the radio bearer at the first fast cell after the UE leaves the first fast cell, and re-register the UE into an adjacent normal cell when a service connection is terminated, or hand over the UE to the adjacent normal cell from the second fast cell when the measured moving speed of the UE is below the threshold;
• and
• if fast cells are not set up as base stations starts up, the processor adapted to follow the same procedures as above except setting up the first fast cell or the second fast cell before setting up a corresponding radio bearer in the first or the second fast cell, and releasing the first or the second fast cell after releasing all the radio bearers in the first or the second fast cell,
• wherein the fast cells are cells configured along a railway;
• and
• a base station including:
• a transmitter adapted to measure and transmit information of the UE moving speed periodically;
• a base station processor adapted to,
• if fast cells are set up as base stations starts up, set up a same radio bearer at the second fast cell as the radio bearer sets up at a first fast cell when the UE is leaving the first fast cell for the second fast cell adjacent to the first fast cell and the measured moving speed is exceeding a threshold, and release the radio bearer at the first fast cell after the UE leaves the first fast cell;
• if fast cells are not set up as base stations starts up, the processor adapted to follow the same procedures as above except setting up the first or the second fast cell before setting up the corresponding radio bearer in the first or the second fast cell, and releasing the first or the second fast cell after releasing all the radio bearer in the first or the second fast cell.