Communication control device, communication control method, and communication control system
First Claim
1. A communication control device comprising:
- a power distribution unit to distribute, to one or more secondary systems, a transmission power accepted for a secondary usage of a frequency channel which is protected for a primary system, anda notification unit to notify each secondary system of a value of a second transmission power which is decided depending on a value of a first transmission power distributed by the power distribution unit,wherein, upon updating the transmission power, only in a case where a value of the second transmission power which is previously notified and a value of the first transmission power which is newly distributed by the device satisfy a predetermined condition with respect to a certain secondary system, the device notifies the secondary system of a new value of the second transmission power, andwherein, the device updates the transmission power by using a nominal number of secondary systems using one or more frequency channels adjacent to the frequency channel which is protected for the primary system, the nominal number being used in place of an actual number of secondary systems using the one or more frequency channels adjacent to the frequency channel which is protected for the primary system, and the nominal number being different from the actual number.
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Accused Products
Abstract
There is provided a communication control device including a power distribution unit configured to distribute, to one or more secondary systems, a transmission power accepted for a secondary usage of a frequency channel which is protected for a primary system, and a notification unit configured to notify each secondary system of a value of a second transmission power which is decided depending on a value of a first transmission power distributed by the power distribution unit. Upon updating the transmission power, only in a case where a value of the second transmission power which is previously notified and a value of the first transmission power which is newly distributed by the power distribution unit satisfy a predetermined condition with respect to a certain secondary system, the notification unit notifies the secondary system of a new value of the second transmission power.
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Citations
15 Claims
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1. A communication control device comprising:
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a power distribution unit to distribute, to one or more secondary systems, a transmission power accepted for a secondary usage of a frequency channel which is protected for a primary system, and a notification unit to notify each secondary system of a value of a second transmission power which is decided depending on a value of a first transmission power distributed by the power distribution unit, wherein, upon updating the transmission power, only in a case where a value of the second transmission power which is previously notified and a value of the first transmission power which is newly distributed by the device satisfy a predetermined condition with respect to a certain secondary system, the device notifies the secondary system of a new value of the second transmission power, and wherein, the device updates the transmission power by using a nominal number of secondary systems using one or more frequency channels adjacent to the frequency channel which is protected for the primary system, the nominal number being used in place of an actual number of secondary systems using the one or more frequency channels adjacent to the frequency channel which is protected for the primary system, and the nominal number being different from the actual number. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 15)
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12. A communication control method comprising:
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distributing, to one or more secondary systems by use of circuitry, a transmission power accepted for a secondary usage of a frequency channel which is protected for a primary system; and notifying each secondary system of a value of a second transmission power which is decided depending on a value of a first transmission power distributed by the circuitry, wherein, upon updating the transmission power, only in a case where a value of the second transmission power which is previously notified and a value of the first transmission power which is newly distributed satisfy a predetermined condition with respect to a certain secondary system, the secondary system is notified of a new value of the second transmission power, wherein, the transmission power is updated by using a nominal number of secondary systems using one or more frequency channels adjacent to the frequency channel which is protected for the primary system, the nominal number being used in place of an actual number of secondary systems using the one or more frequency channels adjacent to the frequency channel which is protected for the primary system, and the nominal number being different from the actual number. - View Dependent Claims (13)
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14. A communication control system comprising:
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a communication control device including a circuitry configured to distribute, to one or more secondary systems, a transmission power accepted for a secondary usage of a frequency channel which is protected for a primary system, and a circuitry configured to notify each secondary system of a value of a second transmission power which is decided depending on a value of a first transmission power distributed by the circuitry; and a communication device configured to set a transmission power for operating the secondary system within a range of the value of the second transmission power notified from the communication control device, wherein, upon updating the transmission power, only in a case where a value of the second transmission power which is previously notified to the communication device and a value of the first transmission power which is newly distributed to the communication device satisfy a predetermined condition, the circuitry of the communication control device notifies the communication device of the new value of the second transmission power wherein, the circuitry updates the transmission power by using a nominal number of secondary systems using one or more frequency channels adjacent to the frequency channel which is protected for the primary system, the nominal number being used in place of an actual number of secondary systems using the one or more frequency channels adjacent to the frequency channel which is protected for the primary system, and the nominal number being different from the actual number.
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Specification