METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM
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Abstract
Provided are a method and an apparatus for transmitting downlink control information in a wireless communication system configured with a plurality of serving cells. The method generates downlink control information scheduling frequency division duplex (FDD) cells by means of FDD frames (DCI_FDD) and downlink control information scheduling time division duplex (TDD) cells by means of TDD frames (DCI_TDD), and transmits the DCI_FDD and the DCI_TDD, wherein parts of the fields of DCI_FDD and DCI_TDD are generated to have equal bit sizes, and if the FDD or TDD cell is used exclusively, then said parts of the fields in the FDD and TDD cells have mutually different bit sizes.
12 Citations
34 Claims
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1-18. -18. (canceled)
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19. A method for receiving downlink control information (DCI) in a wireless communication system, the method performed by a user equipment (UE) which is configured with a plurality of serving cells, the method comprising:
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receiving DCI for a frequency division duplex (FDD) cell which uses FDD frames (DCI_FDD) and DCI for a time division duplex (TDD) cell which uses TDD frames (DCI_TDD); and decoding the DCI_FDD and the DCI_TDD, wherein when the plurality of serving cells comprise an FDD cell and a TDD cell, a hybrid automatic repeat request (HARQ) process number field in the DCI_FDD and in the DCI_TDD has the same bit size and the bit size depends on whether a primary cell is an FDD cell or a TDD cell. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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27. A user equipment (UE) comprising:
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a radio frequency (RF) unit that transmits and receives a radio signal; and a processor operatively coupled to the RF unit, wherein the processor receives DCI for a frequency division duplex (FDD) cell which uses FDD frames (DCI_FDD) and DCI for a time division duplex (TDD) cell which uses TDD frames (DCI_TDD), and decodes the DCI_FDD and the DCI_TDD, wherein when the plurality of serving cells comprise an FDD cell and a TDD cell, a hybrid automatic repeat request (HARQ) process number field in the DCI_FDD and in the DCI_TDD has the same bit size and the bit size depends on whether a primary cell is an FDD cell or a TDD cell. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
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Specification