| CPC H04L 5/0092 (2013.01) [H04L 5/0007 (2013.01); H04L 5/0094 (2013.01); H04W 24/08 (2013.01); H04W 76/27 (2018.02)] | 8 Claims |

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1. A base station configured to operate in of a wireless communication system using a time division duplex (TDD), scheme, the base station comprising:
a communication module; and
a processor configured to control the communication module,
wherein the processor is configured to:
generate a preemption indicator indicating a preempted resource within a predetermined period which includes a first plurality of orthogonal frequency division multiplexing (OFDM) symbols which comprise one or more uplink (UL) symbols, one or more downlink (DL) symbols, and one or more flexible symbols configured as neither a UL symbol nor a DL symbol, wherein the one or more DL symbols, the one or more UL symbols and the one or more flexible symbols are configured by a cell specific radio resource control (RRC) signal, wherein at least one of the one or more flexible symbols is additionally configured as a UL symbol by a user equipment specific RRC signal, and
transmit the preemption indicator to a user equipment of the wireless communication system based on the predetermined period,
wherein the preemption indicator indicates the preempted resource among a second plurality of OFDM symbols which are OFDM symbols included in the first plurality of OFDM symbols except for the one or more UL symbols configured by the cell specific RRC signal, and
the second plurality of OFDM symbols includes the UL symbol configured by the user equipment specific RRC signal.
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