Method, apparatus and system for transmitting and receiving control channel of wireless communication system

A user equipment used for a wireless communication system, the user equipment comprising:

• a communication module;
• and
• a processor,
• wherein the processor is configured to:
• receive configuration information on a periodic signal through a higher layer signal, wherein a reception position of the periodic signal is configured to a first set of symbols within each slot which is set periodically;
• monitor a physical downlink control channel (PDCCH) associated with a slot configuration of a first slot in order to receive slot configuration information for the first slot in which the reception position of the periodic signal is present;
• and
• perform a process for receiving the periodic signal in the first slot,
• wherein when the first set of symbols within the first slot is designated as a flexible symbol by a higher layer, a reception of the periodic signal in the first slot is selectively performed according to a detection result of the PDCCH, and
• wherein the flexible symbol means a symbol whose purpose can be re-designated to downlink (DL), uplink (UL) or flexible according to the slot configuration information of the PDCCH.

A method for determining a transmission of an uplink signal by a user equipment in a wireless communication system, the method comprising:

• receiving configuration information on a periodic signal through a higher layer signal, wherein a transmission position of the periodic signal is configured to a first set of symbols within each slot which is set periodically;
• monitoring a physical downlink control channel (PDCCH) associated with a slot configuration of a first slot in order to receive slot configuration information for the first slot in which the transmission position of the periodic signal is present;
• and
• performing a process for transmitting the periodic signal in the first slot,
• wherein when the first set of symbols within the first slot is designated as a flexible symbol by a higher layer, a transmission of the periodic signal in the first slot is selectively performed according to a detection result of the PDCCH, and
• wherein the flexible symbol means a symbol whose purpose can be re-designated to downlink (DL), uplink (UL) or flexible according to the slot configuration information of the PDCCH.

A user equipment used for a wireless communication system, the user equipment comprising:

• a communication module;
• and
• a processor,
• wherein the processor is configured to:
• receive configuration information on a periodic signal through a higher layer signal, wherein a transmission position of the periodic signal is configured to a first set of symbols within each slot which is set periodically;
• monitor a physical downlink control channel (PDCCH) associated with a slot configuration of a first slot in order to receive slot configuration information for the first slot in which the transmission position of the periodic signal is present;
• and
• perform a process for transmitting the periodic signal in the first slot,
• wherein when the first set of symbols within the first slot is designated as a flexible symbol by a higher layer, a transmission of the periodic signal in the first slot is selectively performed according to a detection result of the PDCCH, and
• wherein the flexible symbol means a symbol whose purpose can be re-designated to downlink (DL), uplink (UL) or flexible according to the slot configuration information of the PDCCH.