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Method and apparatus for determining TDD UL-DL configuration applicable for radio frames

  • US 10,517,137 B2
  • Filed: 02/11/2019
  • Issued: 12/24/2019
  • Est. Priority Date: 07/06/2012
  • Status: Active Grant
First Claim
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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:

  • 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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