Packet Transferring/Transmitting Method And Mobile Communication System

A forwarding method in a mobile communication system in which residual packet data of a first base station are forwarded to a second base station in accordance with a handover procedure based on movement of a mobile station;

• the forwarding method comprising:
• performing the forwarding of the residual packet data after completion of a resource securement for a communication between the second base station and the mobile station;
• and
• receiving, on the mobile station, the forwarded residual packet data.

A base station which is able to work as a handover source base station in a mobile communication system in which residual packet data of the handover source base station are forwarded to a handover destination base station in accordance with a handover procedure based on movement of a mobile station;

• the base station comprising:
• a transmitter that forwards the residual packet data to the handover destination base station;
• and
• a controller that controls the transmitter in such a manner that the transmitter forwards the residual packet data after completion of a resource securement for a communication between the handover destination base station and the mobile station.

A mobile communication system in which residual packet data of a first base station are forwarded to a second base station in accordance with a handover procedure based on movement of a mobile station;

• the mobile communication system comprising:
• the first base station including:
• a processor that requests a resource securement to the second base station before the forwarding of the residual packet data;
• and
• a transmitter that performs the forwarding of the residual packet data after completion of the resource securement;
• and
• the mobile station includes:
• a receiver that receives the forwarded residual packet data.

A forwarding method in a mobile communication system in which residual packet data of a first base station are forwarded to a second base station in accordance with a handover procedure based on movement of a mobile station;

• the forwarding method comprising:
• requesting, on the first base station, a resource securement to the second base station before the forwarding of the residual packet data;
• performing, on the first base station, the forwarding of the residual packet data after completion of the resource securement;
• and
• receiving, on the mobile station, the forwarded residual packet data.

A base station which is able to work as a handover source base station in a mobile communication system in which residual packet data of the handover source base station are forwarded to a handover destination base station in accordance with a handover procedure based on movement of a mobile station;

• the base station comprising:
• a processor that requests a resource securement to the handover destination base station before the forwarding of the residual packet data;
• and
• a transmitter that performs the forwarding of the residual packet data after completion of the resource securement.

A mobile communication system in which residual packet data of a first base station are forwarded to a second base station in accordance with a handover procedure based on movement of a mobile station;

• the mobile communication system comprising:
• a retransmission controller that performs retransmission control of the residual packet data to be transmitted via a radio communication link for the mobile station under control of the second base station;
• a notifying unit that notifies the retransmission controller of the first base station whether the residual packet data was transmitted to the mobile station;
• and
• the mobile station includes a receiver which receives the forwarded residual packet data.

A forwarding method in a mobile communication system in which residual packet data of a first base station are forwarded to a second base station in accordance with a handover procedure based on movement of a mobile station;

• the forwarding method comprising:
• performing retransmission control of the residual packet data to be transmitted via a radio communication link for the mobile station under control of the second base station;
• notifying the first base station whether the residual packet data was transmitted to the mobile station;
• and
• receiving, on the mobile station, the forwarded residual packet data.

A base station which is able to work as a handover destination base station in a mobile communication system in which residual packet data of a handover source base station are forwarded to the handover destination base station in accordance with a handover procedure based on movement of a mobile station;

• the base station comprising:
• a retransmission controller that performs retransmission control of the residual packet data to be transmitted via a radio communication link for the mobile station;
• and
• a notifying unit that notifies the handover source base station whether the residual packet data was transmitted to the mobile station.