Method, device and system for uplink transmission and downlink reception in wireless communication system
View Patent ↗The present invention relates to a transmission and reception method of a radio signal by a terminal in a wireless communication system. According to the present specification, disclosed is a method comprising the steps of: determining whether or not transmission of an uplink radio signal or reception of a downlink radio signal allocated to a terminal is possible on a slot configured to comprise at least one of one or more downlink symbols for downlink transmission, one or more flexible symbols and one or more uplink symbols for uplink transmission; and controlling the transmission of the uplink radio signal or the reception of the downlink radio signal on the basis of the determination. According to the present invention, the terminal can transmit the uplink radio signal even if the configuration of the slot is changed, and thus uplink radio signal transmission omission or unnecessary retransmission of the uplink radio signal can be prevented. And by means of defining valid timing of the uplink signal such as a physical random access channel, the frequency efficiency of the network can be increased and the energy consumption of the terminal can be reduced.
1. A terminal configured to operate in a wireless communication system, the terminal comprising:
a communication module; and
a processor,
wherein the processor is configured to:
receive common configuration information related to a configuration of a slot from a base station,
determine a gap symbol size as one of plural numbers according to a configuration between the terminal and the base station,
wherein the gap symbol size corresponds to a time interval required for downlink-to-uplink transmission,
determine a transmission resource of an uplink radio signal as valid in the slot when an interval between a reference symbol and a starting symbol of the transmission resource satisfies at least the gap symbol size, and
perform transmission of the uplink radio signal in the transmission resource when the transmission resource in the slot is determined as valid
wherein, when a synchronization signal/physical broadcast channel (SS/PBCH) being configured within a downlink symbol set, the reference symbol is a last symbol of the downlink symbol set, and
wherein, when the SS/PBCH is configured on at least one a flexible symbol, the reference symbol is a last symbol of the SS/PBCH.
2. The terminal of claim 1 ,
wherein the configuration of the slot includes the downlink symbol set and a flexible symbol set, and the downlink symbol set is directly followed by the flexible symbol set.
3. The terminal of claim 1 ,
wherein, when the interval between the reference symbol and the starting symbol of the transmission resource is less than the gap symbol size, the transmission resource of the uplink radio signal is determined as invalid.
4. The terminal of claim 1 ,
wherein, when the interval between the reference symbol and the starting symbol of the transmission resource is greater than at least the gap symbol size, the transmission resource of the uplink radio signal is determined as valid.
5. The terminal of claim 1 ,
wherein the uplink radio signal comprises at least one of a physical uplink control channel, a physical uplink shared channel, a physical random access channel, and a sounding reference signal (SRS).
6. The terminal of claim 1 ,
wherein at least one of the symbols to which the uplink radio signal is allocated is a flexible symbol.
7. The terminal of claim 1 ,
wherein a symbol set for the uplink radio signal is configured by a radio resource control (RRC) signal.
8. The terminal of claim 1 ,
wherein the slot is configured by the common slot configuration information provided by the base station.
9. A method for performing uplink transmission by a terminal configured to operate in a wireless communication system, the method comprising:
receiving common configuration information related to a configuration of a slot from a base station;
determining a gap symbol size as one of plural numbers according to a configuration between the terminal and the base station,
wherein the gap symbol size corresponds to a time interval required for downlink-to-uplink transmission;
determine whether a transmission resource of an uplink radio signal as valid in the slot when an interval between a reference symbol and a starting symbol of the transmission resource satisfies at least the gap symbol size; and
perform transmission of the uplink radio signal in the transmission resource when the transmission resource in the slot is determined as valid
wherein, when a synchronization signal/physical broadcast channel (SS/PBCH) is configured within a downlink symbol set, the reference symbol is a last symbol of the downlink symbol set, and
wherein, when the SS/PBCH is configured on at least one a flexible symbol, the reference symbol is a last symbol of the SS/PBCH.
10. The method of claim 9 ,
wherein, when the interval between the reference symbol and the starting symbol of the transmission resource is less than the gap symbol size, the transmission resource of the uplink radio signal is determined as invalid.
11. The method of claim 9 ,
wherein, when the interval between the reference symbol and the starting symbol of the transmission resource is greater than at least the gap symbol size, the transmission resource of the uplink radio signal is determined as valid.
12. The method of claim 9 ,
wherein the uplink radio signal comprises at least one of a physical uplink control channel, a physical uplink shared channel, a physical random access channel, and a sounding reference signal (SRS).
13. The method of claim 9 ,
wherein at least one of the symbols to which the uplink radio signal is allocated is a flexible symbol.
14. The method of claim 9 ,
wherein a symbol set for the uplink radio signal is configured by a radio resource control (RRC) signal.
15. The method of claim 9 ,
wherein the slot is configured by the common slot configuration information provided by the base station.