Base station, user equipment, communication control method, and radio communication system

A mobile communication terminal comprising:

• a radio communication unit implemented by circuitry and configured to establish a communication with a base station using a plurality of component carriers;
• a control unit implemented by the circuitry and configured to receive a measurement time interval for at least one component carrier from a base station according to a handover factor;
• and
• a measurement unit implemented by the circuitry and configured to measure a channel quality of the at least one component carrier of another base station during the measurement time interval,
• wherein at least one component carrier from the plurality of component carriers is not allocated the measurement time interval upon determination that an urgency level is low as indicated by the handover factor,
• the handover factor specifies the urgency level for handover to the another base station, and
• the urgency level is low upon determination that a moving speed of the mobile communication terminal is below a speed threshold and a communication quality of the mobile communication terminal is above a communication threshold.

A method comprising:

• establishing communication with a mobile communication terminal using a plurality of component carriers;
• determining a handover factor;
• and
• allocating to the mobile communication terminal a measurement time interval for at least one component carrier from the plurality of component carriers according to the handover factor, wherein
• a channel quality of the at least one component carrier of another base station is measured during the measurement time interval, and
• at least one component carrier from the plurality of component carriers is not allocated the measurement time interval upon determination that an urgency level is low as indicated by the handover factor,
• the handover factor specifies the urgency level for handover to the another base station, and
• the urgency level is low upon determination that a moving speed of the mobile communication terminal is below a speed threshold and a communication quality of the mobile communication terminal is above a communication threshold.

A non-transitory computer readable medium, having instructions stored thereon, which when executed by a processor in a base station causes the processor to:

• establish communication with a mobile communication terminal using a plurality of component carriers;
• determine a handover factor;
• and
• allocate to the mobile communication terminal a measurement time interval for at least one component carrier from the plurality of component carriers according to the handover factor, wherein
• a channel quality of the at least one component carrier of another base station is measured during the measurement time interval, and
• at least one component carrier from the plurality of component carriers is not allocated the measurement time interval upon determination that an urgency level is low as indicated by the handover factor,
• the handover factor specifies the urgency level for handover to the another base station, and
• the urgency level is low upon determination that a moving speed of the mobile communication terminal is below a speed threshold and a communication quality of the mobile communication terminal is above a communication threshold.

A method comprising:

• establishing a communication with a base station using a plurality of component carriers;
• receiving a measurement time interval for at least one component carrier from a base station according to a handover factor;
• and
• measuring a channel quality of the at least one component carrier of another base station during the measurement time interval, wherein
• at least one component carrier from the plurality of component carriers is not allocated the measurement time interval upon determination that an urgency level is low as indicated by the handover factor,
• the handover factor specifies the urgency level for handover to the another base station, and
• the urgency level is low upon determination that a moving speed of the mobile communication terminal is below a speed threshold and a communication quality of the mobile communication terminal is above a communication threshold.

A non-transitory computer readable medium, having instructions stored thereon, which when executed by a processor in a mobile communication terminal causes the processor to:

• establish a communication with a base station using a plurality of component carriers;
• receive a measurement time interval for at least one component carrier from a base station according to a handover factor;
• and
• measure a channel quality of the at least one component carrier of another base station during the measurement time interval, wherein
• at least one component carrier from the plurality of component carriers is not allocated the measurement time interval upon determination that an urgency level is low as indicated by the handover factor,
• the handover factor specifies the urgency level for handover to the another base station, and
• the urgency level is low upon determination that a moving speed of the mobile communication terminal is below a speed threshold and a communication quality of the mobile communication terminal is above a communication threshold.

A base station comprising:

• a radio communication unit implemented by circuitry and configured to establish communication with a mobile communication terminal using a plurality of component carriers;
• a determination unit implemented by the circuitry and configured to determine moving speed of the mobile communication terminal or a channel quality of component carrier;
• and
• a control unit implemented by the circuitry and configured to allocate to the mobile communication terminal a measurement time interval for at least one component carrier from the plurality of component carriers according to the moving speed of the mobile communication terminal or the channel quality of component carrier, wherein
• a channel quality of the at least one component carrier is measured during the measurement time interval, and
• at least one component carrier from the plurality of component carriers is not allocated the measurement time interval upon determination that an urgency level is low as indicated by the handover factor,
• the handover factor specifies the urgency level for handover to the another base station, and
• the urgency level is low upon determination that a moving speed of the mobile communication terminal is below a speed threshold and a communication quality of the mobile communication terminal is above a communication threshold.