Communication control apparatus, communication control method, radio communication system and terminal
First Claim
Patent Images
1. A communication control apparatus, comprising:
- a radio communication unit configured to provide a second radio communication service within a cell in which a base station provides a first radio communication service; and
a control unit configured to;
determine that a communication quality of the first radio communication service exceeds a determined threshold quality;
switch an operation mode of the radio communication unit from a first mode to a second mode based on the determination that the communication quality of the first radio communication service exceeds the determined threshold quality, whereinin the first mode, the radio communication unit is configured to operate continuously,in the second mode, the radio communication unit is configured to operate intermittently,the operation mode is switched after stepwise reduction of transmission power of a reference signal transmitted from the radio communication unit,the stepwise reduction of the transmission power corresponds to reduction of the transmission power in a plurality of steps; and
stand by for a specific time period after each step of the plurality of steps, whereinthe specific time period is a time period required for a terminal apparatus connected to the second radio communication service to switch a connection destination,a power consumed in the second mode is less than a power consumed in the first mode,a plurality of component carriers includes first component carriers used in the second mode and second component carriers used in the first mode, anda count of the first component carriers is less than a count of the second component carriers.
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Abstract
There is provided a communication control apparatus including a radio communication unit that provides a second radio communication service within a cell in which a first base station provides a first radio communication service, and a control unit that, when an operation mode of the radio communication unit is made to transition from a first mode to a second mode in which power is less consumed than in the first mode, switches the operation mode to the second mode after stepwisely reducing transmission power of a reference signal to be transmitted from the radio communication unit.
28 Citations
16 Claims
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1. A communication control apparatus, comprising:
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a radio communication unit configured to provide a second radio communication service within a cell in which a base station provides a first radio communication service; and a control unit configured to; determine that a communication quality of the first radio communication service exceeds a determined threshold quality; switch an operation mode of the radio communication unit from a first mode to a second mode based on the determination that the communication quality of the first radio communication service exceeds the determined threshold quality, wherein in the first mode, the radio communication unit is configured to operate continuously, in the second mode, the radio communication unit is configured to operate intermittently, the operation mode is switched after stepwise reduction of transmission power of a reference signal transmitted from the radio communication unit, the stepwise reduction of the transmission power corresponds to reduction of the transmission power in a plurality of steps; and stand by for a specific time period after each step of the plurality of steps, wherein the specific time period is a time period required for a terminal apparatus connected to the second radio communication service to switch a connection destination, a power consumed in the second mode is less than a power consumed in the first mode, a plurality of component carriers includes first component carriers used in the second mode and second component carriers used in the first mode, and a count of the first component carriers is less than a count of the second component carriers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A communication control method, comprising:
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providing a second radio communication service by a radio communication unit of a second base station within a cell in which a first base station provides a first radio communication service; determining that a communication quality of the first radio communication service exceeds a determined threshold quality; switching an operation mode of the radio communication unit from a first mode to a second mode based on the determination that the communication quality of the first radio communication service exceeds the determined threshold quality, wherein in the first mode, the radio communication unit is configured to operate continuously, in the second mode, the radio communication unit is configured to operate intermittently, the operation mode is switched after stepwise reduction of transmission power of a reference signal transmitted from the radio communication unit, and the stepwise reduction of the transmission power corresponds to reduction of the transmission power in a plurality of steps; and standing by for a specific time period after each step of the plurality of steps, wherein the specific time period is a time period required for a terminal apparatus connected to the second radio communication service to switch a connection destination, a power consumed in the second mode is less than a power consumed in the first mode, a plurality of component carriers includes first component carriers used in the second mode and second component carriers used in the first mode, and a count of the first component carriers is less than a count of the second component carriers.
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14. A radio communication system, comprising:
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a first base station configured to provide a first radio communication service; and a second base station including; a radio communication unit configured to provide a second radio communication service within a cell of the first radio communication service, and a control unit configured to; determine that a communication quality of the first radio communication service exceeds a determined threshold quality; switch an operation mode of the radio communication unit from a first mode to a second mode based on the determination that the communication quality of the first radio communication service exceeds the determined threshold quality, wherein in the first mode, the radio communication unit is configured to operate continuously, in the second mode, the radio communication unit is configured to operate intermittently, the operation mode is switched after stepwise reduction of transmission power of a reference signal transmitted from the radio communication unit, and the stepwise reduction of the transmission power corresponds to reduction of the transmission power in a plurality of steps; and stand by for a specific time period after each step of the plurality of steps, wherein the specific time period is a time period required for a terminal apparatus connected to the second radio communication service to switch a connection destination, a power consumed in the second mode is less than a power consumed in the first mode, a plurality of component carriers includes first component carriers used in the second mode and second component carriers used in the first mode, and a count of the first component carriers is less than a count of the second component carriers.
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15. A terminal apparatus, comprising:
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a radio communication unit configured to utilize a second radio communication service provided by a second base station within a cell, wherein a first base station provides a first radio communication service in the cell; and a control unit configured to switch a connection destination of the radio communication unit from the second base station to a third base station based on stepwise reduction of transmission power of a reference signal received by the radio communication unit, wherein an operation mode of the second base station transitions from a first mode to a second mode based on a determination that a communication quality of the first radio communication service exceeds a determined threshold quality, in the first mode, the second base station is configured to operate continuously, in the second mode, the second base station is configured to operate intermittently, the stepwise reduction of the transmission power corresponds to reduction of the transmission power in a plurality of steps, the second base station stands by for a specific time period after each step of the plurality of steps, the specific time period is a time period required for the terminal apparatus connected to the second radio communication service to switch the connection destination, and a power consumed in the second mode is less than a power consumed in the first mode.
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16. A communication control apparatus, comprising:
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a radio communication unit configured to provide a first radio communication service within a cell; and a control unit configured to; control a base station that provides a second radio communication service to switch an operation mode from a first mode to a second mode based on a determination that a communication quality of the first radio communication service exceeds a determined threshold quality, wherein in the first mode, the base station is configured to operate continuously, in the second mode, the base station is configured to operate intermittently, the operation mode is switched after stepwise reduction of transmission power of a reference signal to be transmitted from the base station, wherein the stepwise reduction of the transmission power corresponds to reduction of the transmission power in a plurality of steps; and the base station stands by for a specific time period after each step of the plurality of steps, the specific time period is a time period required for a terminal apparatus connected to the second radio communication service to switch a connection destination, and a power consumed in the second mode is less than a power consumed in the first mode.
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Specification