Downlink signaling for adaption of an uplink-downlink configuration in TDD communication systems
First Claim
1. A method, comprising:
- receiving configuration information fora reception periodicity for a physical downlink control channel (PDCCH) conveying a downlink control information (DCI) format, wherein the PDCCH reception is over a number of control channel elements (CCEs),a number of CCEs for the PDCCH reception,a size for the DCI format, anda set of locations in the DCI format for a respective set of fields corresponding to a set of cells;
detecting the DCI format; and
dropping a transmission in a time resource of a cell from the set of cells when a respective field in the DCI format indicates the time resource to be a downlink time resource.
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Abstract
An apparatus includes a User Equipment (UE) having a receiver and a decoder. The receiver is configured to receive, from an eNodeB (eNB), a signal indicating a configuration of a period to receive one or more Physical Downlink Control CHannels (PDCCHs) in respective one or more Transmission Time Intervals (TTIs). Each of the one or more PDCCHs conveys a same Downlink Control Information (DCI) format. The DCI format includes at least one field indicating a first Time Division Duplexing (TDD) UpLink-DownLink (UL-DL) configuration in a first cell for DL data receptions or UL data transmissions. A TDD UL-DL configuration includes ten TTIs each having a respective serial index from 0 to 9. The receiver is also configured to receive, from the eNB, at least one PDCCH of the one or more PDCCHs. The decoder is configured to decode the DCI format conveyed by the at least one PDCCH in a second cell. The period is a multiple of ten TTIs, and the one or more TTIs are in a last ten TTIs of the period.
9 Citations
28 Claims
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1. A method, comprising:
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receiving configuration information for a reception periodicity for a physical downlink control channel (PDCCH) conveying a downlink control information (DCI) format, wherein the PDCCH reception is over a number of control channel elements (CCEs), a number of CCEs for the PDCCH reception, a size for the DCI format, and a set of locations in the DCI format for a respective set of fields corresponding to a set of cells; detecting the DCI format; and dropping a transmission in a time resource of a cell from the set of cells when a respective field in the DCI format indicates the time resource to be a downlink time resource. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A user equipment, comprising:
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a receiver configured to receive configuration information for a reception periodicity for a physical downlink control channel (PDCCH) conveying a downlink control information (DCI) format, wherein the PDCCH reception is over a number of control channel elements (CCEs), a number of CCEs for the PDCCH reception, a size for the DCI format, and a set of locations in the DCI format for a respective set of fields corresponding to a set of cells; a decoder configured to detect the DCI format; and a transmitter configured to drop a transmission in a time resource of a cell from the set of cells when a respective field in the DCI format indicates the time resource to be a downlink time resource. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method, comprising:
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transmitting configuration information for; a transmission periodicity for a physical downlink control channel (PDCCH) conveying a downlink control information (DCI) format wherein the PDCCH transmission is over a number of control channel elements (CCEs), a number of CCEs for the PDCCH transmission, a size for the DCI format, and a set of locations in the DCI format for a respective set of fields corresponding to a set of cells; and dropping a reception in a time resource of a cell from the set of cells when a respective field in the DCI format indicates the time resource to be a downlink time resource. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A base station, comprising:
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a transmitter configured to transmit configuration information for; a transmission periodicity for a physical downlink control channel (PDCCH) conveying a downlink control information (DCI) format wherein the PDCCH transmission is over a number of control channel elements (CCEs), a number of CCEs for the PDCCH transmission, a size for the DCI format, and a set of locations in the DCI format for a respective set of fields corresponding to a set of cells; and a receiver configured to drop a reception in a time resource of a cell from the set of cells when a respective field in the DCI format indicates the time resource to be a downlink time resource. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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Specification