Mobile communication method, radio base station, mobile station, and processor

A mobile communication method in which a mobile station transmits a control signal to a radio base station through uplink dedicated resources, the method comprising the steps of:

• determining to change a reception cycle of a downlink data signal in the mobile station, from a first discontinuous reception cycle to a second discontinuous reception cycle longer than the first discontinuous reception cycle;
• releasing the uplink dedicated resources being allocated to the mobile station, in response to a result of the determination;
• and
• establishing uplink or downlink synchronization between the radio base station and the mobile station, and setting up the uplink dedicated resources, when transmission of an uplink data signal or a downlink data signal is to be resumed.

A radio base station that receives a control signal from a mobile station through uplink dedicated resources, the radio base station comprising:

• a reception cycle controller unit configured to control a reception cycle of a downlink data signal in the mobile station;
• an uplink receiver unit configured to release the uplink dedicated resources being allocated to the mobile station, when it is determined to change the reception cycle of a downlink data signal in the mobile station, from a continuous reception cycle to a discontinuous reception cycle;
• and
• a synchronization establishing unit configured to establish uplink or downlink synchronization between the radio base station and the mobile station, and to set up the uplink dedicated resources, when transmission of an uplink data signal or a downlink data signal is to be resumed.

A radio base station that receives a control signal from a mobile station through uplink dedicated resources, the radio base station comprising:

• a reception cycle controller unit configured to control a reception cycle of a downlink data signal in the mobile station;
• an uplink receiver unit configured to release the uplink dedicated resources being allocated to the mobile station, when it is determined to change the reception cycle of a downlink data signal in the mobile station, from a first discontinuous reception cycle to a second discontinuous reception cycle longer than the first discontinuous reception cycle;
• and
• a synchronization establishing unit configured to establish uplink or downlink synchronization between the radio base station and the mobile station, and to set up the uplink dedicated resources, when transmission of an uplink data signal or a downlink data signal is to be resumed.

A mobile station that transmits a control signal to a radio base station through uplink dedicated resources, the mobile station comprising:

• a reception cycle controller unit configured to control a reception cycle of a downlink data signal in the mobile station;
• an uplink transmitter unit configured to release the uplink dedicated resources being allocated to the mobile station, when it is determined to change the reception cycle of a downlink data signal in the mobile station, from a continuous reception cycle to a discontinuous reception cycle;
• and
• a synchronization establishing unit configured to establish uplink synchronization between the radio base station and the mobile station, and to set up the uplink dedicated resources, when transmission of an uplink data signal is to be resumed.

A mobile station that transmits a control signal to a radio base station through uplink dedicated resources, the mobile station comprising:

• a reception cycle controller unit configured to control a reception cycle of a downlink data signal in the mobile station;
• an uplink transmitter unit configured to release the uplink dedicated resources being allocated to the mobile station, when it is determined to change the reception cycle of a downlink data signal in the mobile station, from a first discontinuous reception cycle to a second discontinuous reception cycle longer than the first discontinuous reception cycle;
• and
• a synchronization establishing unit configured to establish uplink synchronization between the radio base station and the mobile station, and to set up the uplink dedicated resources, when transmission of an uplink data signal is to be resumed.

A processor that generates a control signal transmitted through uplink dedicated resources, the processor being configured to:

• control a reception cycle for a downlink data signal;
• release the uplink dedicated resources being allocated, when it is determined to change the reception cycle for a downlink data signal, from a continuous reception cycle to a discontinuous reception cycle;
• and
• establish uplink synchronization and set up the uplink dedicated resources, when transmission of an uplink data signal is to be resumed.

A processor that generates a control signal transmitted through uplink dedicated resources, the processor being configured to:

• control a reception cycle for a downlink data signal;
• release the uplink dedicated resources being allocated, when it is determined to change the reception cycle for a downlink data signal, from a first discontinuous reception cycle to a second discontinuous reception cycle longer than the first discontinuous reception cycle;
• and
• establish uplink synchronization and set up the uplink dedicated resources, when transmission of an uplink data signal is to be resumed.