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 mobile communication method comprising the steps of:

• (A) activating a second timer, when a reception cycle of the mobile station is changed from a continuous reception cycle to a first discontinuous reception cycle;
• and
• (B) changing the reception cycle of the mobile station from the first discontinuous reception cycle to a second discontinuous reception cycle longer than the first discontinuous reception cycle, and releasing the uplink dedicated resources, when the second timer expires with no downlink data signal transmitted after the activation of the second timer.

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

• activate a first timer, when having transmitted a downlink data signal to the mobile station operating in a continuous reception cycle;
• and
• change a reception cycle of the mobile station from the continuous reception cycle to a first discontinuous reception cycle, and release the uplink dedicated resources, when the first timer expires with no downlink data signal transmitted after the activation of the first timer.

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

• activate a second timer, when a reception cycle of the mobile station is changed from a continuous reception cycle to a first discontinuous reception cycle;
• and
• change the reception cycle of the mobile station from the first discontinuous reception cycle to a second discontinuous reception cycle longer than the first discontinuous reception cycle, and release the uplink dedicated resources, when the second timer expires with no downlink data signal transmitted after the activation of the second timer.

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

• activate a first timer, when operating in a continuous reception cycle and having received a downlink data signal;
• and
• change a reception cycle of the mobile station from the continuous reception cycle to a first discontinuous reception cycle, and release the uplink dedicated resources, when the first timer expires with no downlink data signal received after the activation of the first timer.

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

• activate a second timer, when a reception cycle of the mobile station is changed from a continuous reception cycle to a first discontinuous reception cycle;
• and
• change the reception cycle of the mobile station from the first discontinuous reception cycle to a second discontinuous reception cycle longer than the first discontinuous reception cycle, and release the uplink dedicated resources, when the second timer expires with no downlink data signal received after the activation of the second timer.

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

• activate a first timer, when operating in a continuous reception cycle and having received a downlink data signal;
• and
• change a reception cycle for a downlink data signal from the continuous reception cycle to a first discontinuous reception cycle, and release the uplink dedicated resources, when the first timer expires with no downlink data signal received after the activation of the first timer.

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

• activate a second timer, when a reception cycle for a downlink data signal is changed from a continuous reception cycle to a first discontinuous reception cycle;
• and
• change the reception cycle from the first discontinuous reception cycle to a second discontinuous reception cycle longer than the first discontinuous reception cycle, and release the uplink dedicated resources, when the second timer expires with no downlink data signal received after the activation of the second timer.