Method and apparatus for determining TDD UL-DL configuration applicable for radio frames
First Claim
1. A method for monitoring a physical downlink control channel (PDCCH) by a user equipment (UE) in a wireless communication system, the method comprising:
- receiving, by the UE, a system information block (SIB) from a base station;
identifying, by the UE, downlink (DL) subframes indicated by a first time division duplex (TDD) uplink (UL)/DL configuration in the SIB;
monitoring, by the UE, the PDCCH transmitted from the base station on at least one DL subframe included in an active time of a discontinuous reception (DRX) cycle among the DL subframes;
obtaining, by the UE, information about a second TDD UL/DL configuration from the monitored PDCCH; and
monitoring, by the UE, the PDCCH using the second TDD UL/DL configuration,wherein the active time includes a duration corresponding to a number of at least one consecutive DL subframe at a beginning of the DRX cycle.
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Abstract
A method and an apparatus are provided for monitoring a physical downlink control channel (PDCCH) by a user equipment (UE) in a wireless communication system. The UE receives a system information block (SIB) from a base station. The UE identifies downlink (DL) subframes indicated by a first time division duplex (TDD) uplink (UL)/DL configuration in the SIB. The UE monitors the PDCCH transmitted from the base station on at least one DL subframe included in an active time of a discontinuous reception (DRX) cycle among the DL subframes. The UE obtains information about a second TDD UL/DL configuration from the monitored PDCCH. The UE monitors the PDCCH using the second TDD UL/DL configuration. The active time includes a duration corresponding to a number of at least one consecutive DL subframe at a beginning of the DRX cycle.
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Citations
20 Claims
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1. A method for monitoring a physical downlink control channel (PDCCH) by a user equipment (UE) in a wireless communication system, the method comprising:
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receiving, by the UE, a system information block (SIB) from a base station; identifying, by the UE, downlink (DL) subframes indicated by a first time division duplex (TDD) uplink (UL)/DL configuration in the SIB; monitoring, by the UE, the PDCCH transmitted from the base station on at least one DL subframe included in an active time of a discontinuous reception (DRX) cycle among the DL subframes; obtaining, by the UE, information about a second TDD UL/DL configuration from the monitored PDCCH; and monitoring, by the UE, the PDCCH using the second TDD UL/DL configuration, wherein the active time includes a duration corresponding to a number of at least one consecutive DL subframe at a beginning of the DRX cycle. - View Dependent Claims (2, 3, 4, 5)
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6. A method for transmitting information of monitoring a physical downlink control channel (PDCCH) by a base station (BS) in a wireless communication system, the method comprising:
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transmitting, by the BS, to a user equipment (UE), a system information block (SIB) including a first time division duplex (TDD) uplink (UL)/downlink (DL) configuration; and transmitting, by the BS, to the UE, information about a second TDD UL/DL configuration through the PDCCH on at least one subframe, wherein the at least one subframe is at least one DL subframe included in an active time of a discontinuous reception (DRX) cycle among DL subframes indicated by the TDD UL/DL configuration, wherein the second TDD UL/DL configuration is used to transmit information about a third TDD UL/DL configuration through the PDCCH, and wherein the active time includes a duration corresponding to a number of at least one consecutive DL subframe at a beginning of the DRX cycle. - View Dependent Claims (7, 8, 9, 10)
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11. A user equipment (UE) in a wireless communication system, the UE comprising:
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a transceiver configured to receive a system information block (SIB) from a base station; and at least one processor configured to; identify downlink (DL) subframes indicated by a first time division duplex (TDD) uplink (UL)/DL configuration in the SIB, control the transceiver to monitor a physical downlink control channel (PDCCH) transmitted from a base station on at least one DL subframe included in an active time of a discontinuous reception (DRX) cycle among the DL subframes, obtain information about a second TDD UL/DL configuration on the monitored PDCCH, and monitor the PDCCH using the second TDD UL/DL configuration, wherein the active time includes a duration corresponding to a number of at least one consecutive DL subframe at a beginning of the DRX cycle. - View Dependent Claims (12, 13, 14, 15)
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16. A base station (BS) in a wireless communication system, the BS comprising:
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a transceiver; and at least one processor configured to control the transceiver to; transmit, to a user equipment (UE), a system information block (SIB) including a first time division duplex (TDD) uplink (UL)/downlink (DL) configuration; and transmit, to the UE, information about a second TDD UL/DL configuration through a physical downlink control channel (PDCCH) on at least one subframe, wherein the at least one subframe is at least one DL subframe included in an active time of a discontinuous reception (DRX) cycle among DL subframes indicated by the TDD UL/DL configuration, wherein the second TDD UL/DL configuration is used to transmit information about a third TDD UL/DL configuration through the PDCCH, and wherein the active time includes a duration corresponding to a number of at least one consecutive DL subframe at a beginning of the DRX cycle. - View Dependent Claims (17, 18, 19, 20)
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Specification