USER TERMINAL, RADIO BASE STATION, DOWNLINK CONTROL CHANNEL RECEIVING METHOD AND MOBILE COMMUNICATION SYSTEM
First Claim
1. A user terminal that performs downlink communication with a radio base station using a resource region for a downlink control channel and a resource region for a downlink shared channel, the user terminal comprising:
- a detection section configured to detect a starting position of a radio resource where the downlink shared channel and the downlink control channel are frequency-division-multiplexed, in a time direction, in the resource region for the downlink shared channel; and
a receiving section configured to detect the downlink control channel that is frequency-division-multiplexed in the radio resource starting from the starting position detected in the detection section.
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Accused Products
Abstract
The present invention is designed such that it is possible to optimize the effect of improving the efficiency of use of radio resources even when the number of user terminals to be multiplexed over the same radio resources is further increased. A user terminal performs downlink communication with a radio base station using a PDCCH resource region and a PDSCH resource region. The user terminal detects the starting position of the radio resources where the PDSCH and the PDCCH are frequency-division-multiplexed in the PDSCH resource region in the time direction, and receives the PDCCH that is frequency-division-multiplexed over the radio resources starting from the detected starting position.
45 Citations
10 Claims
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1. A user terminal that performs downlink communication with a radio base station using a resource region for a downlink control channel and a resource region for a downlink shared channel, the user terminal comprising:
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a detection section configured to detect a starting position of a radio resource where the downlink shared channel and the downlink control channel are frequency-division-multiplexed, in a time direction, in the resource region for the downlink shared channel; and a receiving section configured to detect the downlink control channel that is frequency-division-multiplexed in the radio resource starting from the starting position detected in the detection section. - View Dependent Claims (2, 3, 4)
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5. A radio base station that performs downlink communication with a user terminal using a resource region for a downlink control channel and a resource region for a downlink shared channel, the radio base station comprising:
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a multiplexing section configured to frequency-division-multiplex the downlink shared channel and the downlink control channel over a radio resource starting from a predetermined starting position in a time direction, in the resource region for the downlink shared channel; and a transmission section configured to transmit the downlink control channel and the downlink shared channel that are frequency-division-multiplexed. - View Dependent Claims (6, 7, 8)
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9. A method of receiving a downlink control channel using a resource region for a downlink control channel and a resource region for a downlink shared channel, the method comprising the steps of:
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in a radio base station, frequency-division-multiplexing the downlink shared channel and the downlink control channel over a radio resource in the resource region for the downlink shared channel; in a user terminal, detecting a starting position of the radio resources where the downlink shared channel and the downlink control channel are frequency-division-multiplexed, in a time direction; and in the user terminal, receiving the downlink control channel that is frequency-division-multiplexed over the radio resource starting from the detected starting position.
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10. A mobile communication system for performing downlink communication using a subframe having a resource region for a downlink control channel and a resource region for a downlink shared channel, the mobile communication system comprising:
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in a radio base station, frequency-division-multiplexing the downlink shared channel and the downlink control channel over a radio resource in the resource region for the downlink shared channel; in a user terminal, detecting a starting position of the radio resources where the downlink shared channel and the downlink control channel are frequency-division-multiplexed, in a time direction; and in the user terminal, receiving the downlink control channel that is frequency-division-multiplexed over the radio resource starting from the detected starting position.
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Specification