Wireless communication base station device, wireless communication terminal device, and channel allocation method
DCFirst Claim
1. A user equipment comprising:
- a receiver configured to receive downlink data on a plurality of downlink component carriers; and
a transmitter configured to transmit uplink data on one or more uplink component carrier(s), wherein a number of the one or more uplink component carrier(s) used for uplink data transmission is less than a number of the plurality of downlink component carriers used for downlink data reception,wherein the receiver is configured to;
(a) receive downlink resource allocation information directed to the user equipment for a first downlink component carrier and uplink resource allocation information directed to the user equipment for the one or more uplink component carrier(s), from information included in a first channel of the first downlink component carrier, (b) receive downlink resource allocation information directed to the user equipment for a second downlink component carrier, which is different from the first downlink component carrier, from information included in a second channel of the second downlink component carrier, (c) receive the downlink data on the first downlink component carrier in accordance with the downlink resource allocation information included in the first channel of the first downlink component carrier, and (d) receive the downlink data on the second downlink component carrier in accordance with the downlink resource allocation information included in the second channel of the second downlink component carrier,wherein the transmitter transmits the uplink data on the one or more uplink component carrier(s) in accordance with the uplink resource allocation information included in the first channel of the first downlink component carrier, andwherein, after the uplink data transmission on the one or more uplink component carrier(s), the receiver receives a response signal for the uplink data on the first downlink component carrier but not on the second downlink component carrier.
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Accused Products
Abstract
Disclosed is a base station in which the frequency usage efficiency can be improved when the communication bandwidths are asymmetric in the uplink line and the downlink line. A base station (200) can communicate by using a plurality of downlink unit bands and a smaller number of uplink unit bands. A control unit (201) allocates uplink resource allocation information and downlink resource allocation information to a PDCCH which is arranged in each of the plurality of downlink unit bands, and allocates a response signal to the uplink line data to a PHICH which is arranged in the same number of downlink unit bands from the plurality of downlink unit bands as there are uplink unit bands. A transmit RF unit (212) transmits the resource allocation information or the response signal.
20 Citations
8 Claims
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1. A user equipment comprising:
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a receiver configured to receive downlink data on a plurality of downlink component carriers; and a transmitter configured to transmit uplink data on one or more uplink component carrier(s), wherein a number of the one or more uplink component carrier(s) used for uplink data transmission is less than a number of the plurality of downlink component carriers used for downlink data reception, wherein the receiver is configured to;
(a) receive downlink resource allocation information directed to the user equipment for a first downlink component carrier and uplink resource allocation information directed to the user equipment for the one or more uplink component carrier(s), from information included in a first channel of the first downlink component carrier, (b) receive downlink resource allocation information directed to the user equipment for a second downlink component carrier, which is different from the first downlink component carrier, from information included in a second channel of the second downlink component carrier, (c) receive the downlink data on the first downlink component carrier in accordance with the downlink resource allocation information included in the first channel of the first downlink component carrier, and (d) receive the downlink data on the second downlink component carrier in accordance with the downlink resource allocation information included in the second channel of the second downlink component carrier,wherein the transmitter transmits the uplink data on the one or more uplink component carrier(s) in accordance with the uplink resource allocation information included in the first channel of the first downlink component carrier, and wherein, after the uplink data transmission on the one or more uplink component carrier(s), the receiver receives a response signal for the uplink data on the first downlink component carrier but not on the second downlink component carrier. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A reception method to be performed by a user equipment, the method comprising:
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receiving downlink resource allocation information directed to the user equipment for a first downlink component carrier, which is one of a plurality of downlink component carriers used for downlink data reception, and uplink resource allocation information directed to the user equipment for one or more uplink component carrier(s) used for uplink data transmission, from information included in a first channel of the first downlink component carrier, receiving downlink resource allocation information directed to the user equipment for a second downlink component carrier, which is one of the plurality of downlink component carriers and is different from the first downlink component carrier, from information included in a second channel of the second downlink component carrier, receiving the downlink data on the first downlink component carrier in accordance with the downlink resource allocation information included in the first channel of the first downlink component carrier, receiving the downlink data on the second downlink component carrier in accordance with the downlink resource allocation information included in the second channel of the second downlink component carrier, transmitting the uplink data on the one or more uplink component carrier(s) in accordance with the uplink resource allocation information included in the first channel of the first downlink component carrier, a number of the one or more uplink component carrier(s) used for the uplink transmission being less than a number of the plurality of downlink component carriers used for the downlink data reception, and receiving, after the uplink data transmission on the one or more uplink component carrier(s), a response signal for the uplink data on the first downlink component carrier but not on the second downlink component carrier.
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Specification