Base station, user equipment, communication control method, and radio communication system
A base station includes a radio communication unit that establishes communication with a mobile communication terminal using a plurality of component carriers. The base station further includes a determination unit that determines a handover factor. The base station also includes a control unit allocates 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. A channel quality of the at least one component carrier of another base station is measured during the measurement time interval.
1. A communication control device comprising: circuitry configured to
establish communication with a mobile communication terminal using a plurality of component carriers; and
control an allocation of a measurement gap to each component carrier,
wherein the lower a channel quality of communication channel is, the more component carriers the measurement gap is allocated to, such that how much the channel quality is lowered is inversely proportional to a number of component earners having the measurement gap allocated thereto, the component carriers being used to establish communication with the mobile communication terminal,
wherein the circuitry is further configured to obtain the channel quality of the communication channel based on a received signal from the mobile communication terminal, and wherein a cycle of an allocation of a first component carrier is longer than a cycle of an allocation of a second component carrier when a channel quality of the first component carrier is higher than a channel quality of the second component carrier.
2. The communication control device according to claim 1 , wherein the measurement gap is allocated to component carriers with relatively lower-quality level.
3. A mobile communication terminal comprising: circuitry configured to:
establish a communication with a communication control device using a plurality of component carriers; and
control an allocation of a measurement gap to each component carrier,
wherein the lower a channel quality of communication channel is, the more component earners the measurement gap is allocated to, such that how much the channel quality is lowered is inversely proportional to a number of component carriers having the measurement gap allocated thereto, the component earners being used to establish communication with the mobile communication terminal,
wherein the circuitry is further configured to obtain the channel quality of the communication channel based on a received signal from the communication terminal, and
wherein a cycle of an allocation of a first component carrier is longer than a cycle of an allocation of a second component carrier when a channel quality of the first component carrier is higher than a channel quality of the second component carrier.
4. A method comprising:
establishing communication with a mobile communication terminal using a plurality of component carriers; and
controlling an allocation of a measurement gap to each component carrier,
wherein the lower a channel quality of communication channel is, the more component carriers tire measurement gap is allocated to, such that how much the channel quality is lowered is inversely proportional to a number of component carriers having the measurement gap allocated thereto, the component carriers being used to establish communication with the mobile communication terminal,
and obtaining the channel quality of the communication channel based on a received signal from the communication terminal, wherein a cycle of an allocation of a first component carrier is longer than a cycle of an allocate ion of a second component carrier when a channel quality of the first component carrier is higher than a channel quality of the second component carrier.