RADIO COMMUNICATION SYSTEM, BASE STATION, USER TERMINAL, AND COMMUNICATION CONTROL METHOD
First Claim
Patent Images
1. A radio communication system comprising:
- a user terminal; and
a base station capable of communicating wirelessly with the user terminal by using at least one of radio resource groups, each of which contains radio resource units,the user terminal comprising;
a first quality measuring unit configured to measure, for the radio resource groups, their respective group radio qualities; and
a first quality reporting unit configured to report the group radio qualities measured by the first quality measuring unit to the base station at a first frequence,the base station comprising;
a time-averaging unit configured to calculate, for the radio resource groups, their respective time-averaged group radio qualities by time-averaging the group radio qualities reported by the first quality reporting unit;
an allocated resource group determining unit configured to determine at least one of the radio resource groups as an allocated radio resource group to be allocated for radio communication with the user terminal based on the time-averaged group radio qualities calculated by the time-averaging unit; and
an allocated resource group signaling unit configured to report, to the user terminal, the at least one allocated radio resource group that has been determined, by the allocated resource group determining unit, to be allocated for radio communication with the base station,the user terminal further comprising;
a second quality measuring unit configured to measure a unit radio quality of at least one radio resource unit comprised in the at least one allocated radio resource group reported by the allocated resource group signaling unit of the base station; and
a second quality reporting unit configured to report the at least one unit radio quality measured by the second quality measuring unit to the base station at a second frequence, the second frequence being higher than the first frequence, andthe base station further comprising;
a scheduling unit configured to schedule a radio resource to be allocated for radio communication between the base station and the user terminal based on the at least one unit radio quality reported by the second quality reporting unit of the user terminal.
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Accused Products
Abstract
A user terminal reports a group radio quality of each of radio resource groups to a base station at a first frequence. The base station reports an allocated radio resource group to be allocated for radio communication with the user terminal to the user terminal. The user terminal reports unit radio qualities of radio resource units contained in the allocated radio resource group to the base station at a second frequence that is higher than the first frequence. The base station performs radio resource scheduling based on the unit radio qualities.
18 Citations
9 Claims
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1. A radio communication system comprising:
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a user terminal; and a base station capable of communicating wirelessly with the user terminal by using at least one of radio resource groups, each of which contains radio resource units, the user terminal comprising; a first quality measuring unit configured to measure, for the radio resource groups, their respective group radio qualities; and a first quality reporting unit configured to report the group radio qualities measured by the first quality measuring unit to the base station at a first frequence, the base station comprising; a time-averaging unit configured to calculate, for the radio resource groups, their respective time-averaged group radio qualities by time-averaging the group radio qualities reported by the first quality reporting unit; an allocated resource group determining unit configured to determine at least one of the radio resource groups as an allocated radio resource group to be allocated for radio communication with the user terminal based on the time-averaged group radio qualities calculated by the time-averaging unit; and an allocated resource group signaling unit configured to report, to the user terminal, the at least one allocated radio resource group that has been determined, by the allocated resource group determining unit, to be allocated for radio communication with the base station, the user terminal further comprising; a second quality measuring unit configured to measure a unit radio quality of at least one radio resource unit comprised in the at least one allocated radio resource group reported by the allocated resource group signaling unit of the base station; and a second quality reporting unit configured to report the at least one unit radio quality measured by the second quality measuring unit to the base station at a second frequence, the second frequence being higher than the first frequence, and the base station further comprising; a scheduling unit configured to schedule a radio resource to be allocated for radio communication between the base station and the user terminal based on the at least one unit radio quality reported by the second quality reporting unit of the user terminal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A base station capable of communicating wirelessly with a user terminal by using at least one of radio resource groups, each of which contains radio resource units, the base station comprising:
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a time-averaging unit configured to calculate, for the radio resource groups, their respective time-averaged group radio qualities by time-averaging their corresponding group radio qualities that are reported by the user terminal at a first frequence; an allocated resource group determining unit configured to determine at least one of the radio resource groups as an allocated radio resource group to be allocated for radio communication with the user terminal based on the time-averaged group radio qualities calculated by the time-averaging unit; an allocated resource group signaling unit configured to report, to the user terminal, the at least one allocated radio resource group that has been determined, by the allocated resource group determining unit, to be allocated for radio communication with the base station; and a scheduling unit configured to schedule a radio resource to be allocated for radio communication with the user terminal based on at least one unit radio quality that corresponds to at least one radio resource unit comprised in the at least one allocated radio resource group and is reported by the user terminal at a second frequence, the second frequence being higher than the first frequence.
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8. A user terminal capable of communicating wirelessly with a base station by using at least one of radio resource groups, each of which contains radio resource units, the user terminal comprising:
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a first quality measuring unit configured to measure, for the radio resource groups, their respective group radio qualities; a first quality reporting unit configured to report the group radio qualities measured by the first quality measuring unit to the base station at a first frequence; a second quality measuring unit configured to measure a unit radio quality of at least one radio resource unit comprised in an allocated radio resource group that has been determined, by the base station, to be allocated for radio communication with the base station based on time-averaged group radio qualities calculated by time-averaging the group radio qualities and has been reported to the user terminal by the base station; a second quality reporting unit configured to report the at least one unit radio quality measured by the second quality measuring unit to the base station at a second frequence, the second frequence being higher than the first frequence; and a data demodulating unit configured to demodulate data signals transmitted by the base station according to radio resource scheduling that has been performed based on the at least one unit radio quality.
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9. A communication control method for a radio communication system, the radio communication system comprising:
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a user terminal; and a base station capable of communicating wirelessly with the user terminal by using at least one of radio resource groups, each of which contains radio resource units, the communication control method comprising; in the user terminal, measuring, for the radio resource groups, their respective group radio qualities, and reporting the measured group radio qualities to the base station at a first frequence; in the base station, calculating, for the radio resource groups, their respective time-averaged group radio qualities by time-averaging the group radio qualities reported by the user terminal, determining at least one of the radio resource groups as an allocated radio resource group to be allocated for radio communication with the user terminal based on the calculated time-averaged group radio qualities, and reporting the at least one allocated radio resource group to be allocated for radio communication with the base station to the user terminal; in the user terminal, measuring a unit radio quality of at least one radio resource unit comprised in the at least one allocated radio resource group reported by the base station, and reporting the at least one measured unit radio quality to the base station at a second frequence, the second frequence being higher than the first frequence; and in the base station, scheduling a radio resource to be allocated for radio communication between the base station and the user terminal based on the at least one unit radio quality reported by the user terminal.
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Specification