HARQ METHOD AND APPARATUS FOR COMMUNICATION SYSTEM
First Claim
1. A communication method of a base station supporting Hybrid Automatic Repeat reQuest (HARQ) in a communication system utilizing cross-carrier scheduling, the communication method comprising the steps of:
- scheduling, at a first cell, a second cell;
receiving data, transmitted by a terminal, at a subframe of the second cell;
determining a subframe, in the first cell, for transmitting a HARQ acknowledgement corresponding to the data, and a subframe, in the first cell, carrying scheduling information of the second cell;
determining whether the subframe for transmitting the HARQ acknowledgement and the subframe carrying the scheduling information of the second cell are the same; and
when the subframe for transmitting the HARQ acknowledgement and the subframe carrying the scheduling information are not the same, matching the subframe for transmitting the HARQ acknowledgement and the subframe carrying the scheduling information of the second cell to each other.
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Accused Products
Abstract
Methods and apparatus are provided to support HARQ in a communication system adopting cross-carrier scheduling. A second cell is scheduled at a first cell. Data, transmitted by a terminal, at a subframe of the second cell is received. A subframe, in the first cell, is determined for transmitting a HARQ acknowledgement corresponding to the data, and a subframe, in the first cell, is determined carrying scheduling information of the second cell. It is determined whether the subframe for transmitting the HARQ acknowledgement and the subframe carrying scheduling information of the second cell are the same. When the subframe for transmitting the HARQ acknowledgement and the subframe carrying the scheduling information are not the same, the subframe for transmitting the HARQ acknowledgement and the subframe carrying the scheduling information are matched to each other.
71 Citations
20 Claims
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1. A communication method of a base station supporting Hybrid Automatic Repeat reQuest (HARQ) in a communication system utilizing cross-carrier scheduling, the communication method comprising the steps of:
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scheduling, at a first cell, a second cell; receiving data, transmitted by a terminal, at a subframe of the second cell; determining a subframe, in the first cell, for transmitting a HARQ acknowledgement corresponding to the data, and a subframe, in the first cell, carrying scheduling information of the second cell; determining whether the subframe for transmitting the HARQ acknowledgement and the subframe carrying the scheduling information of the second cell are the same; and when the subframe for transmitting the HARQ acknowledgement and the subframe carrying the scheduling information are not the same, matching the subframe for transmitting the HARQ acknowledgement and the subframe carrying the scheduling information of the second cell to each other. - View Dependent Claims (2, 3, 4, 17)
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5. A communication method of a terminal supporting Hybrid Automatic Repeat reQuest (HARQ) in a communication system utilizing cross-carrier scheduling, the communication method comprising the steps of:
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transmitting data to a base station at a subframe of a second cell scheduled by a first cell; and receiving a HARQ acknowledgement corresponding to the data and scheduling information for the second cell at a matched subframe in the first cell. - View Dependent Claims (6, 7, 8, 18)
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9. A base station supporting Hybrid Automatic Repeat reQuest (HARQ) in a communication system utilizing cross-carrier scheduling, the base station comprising:
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a transceiver that transmits and receives data through at least one of a first cell and a second cell; and a controller that schedules the second cell by the first cell, receives data, transmitted by a terminal, at a subframe of the second cell, determines a subframe, in the first cell, for transmitting a HARQ acknowledgement corresponding to the data and a subframe, in the first cell, carrying scheduling information of the second cell, determines whether the subframe for transmitting the HARQ acknowledgement and the subframe carrying the scheduling information of the second cell are the same, and, when the subframe for transmitting the HARQ acknowledgement and the subframe carrying the scheduling information are not the same, matches the subframe for transmitting the HARQ acknowledgement and the subframe carrying the scheduling information of the second cell to each other. - View Dependent Claims (10, 11, 12, 19)
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13. A terminal supporting Hybrid Automatic Repeat reQuest (HARQ) in a communication system utilizing cross-carrier scheduling, the terminal comprising:
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a transceiver that transmits and receives data through at least one of a first cell and second cell; and a controller that receives a HARQ acknowledgement corresponding to the data and scheduling information for the second cell at a matched subframe in the first cell, wherein the second cell is scheduled by the first cell. - View Dependent Claims (14, 15, 16, 20)
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Specification