Method for transmitting and receiving uplink control information and devices supporting the same
Disclosed herein are a method for transmitting and receiving uplink control information between a terminal and a base station in a wireless communication system and devices supporting the same. Particularly, disclosed herein are a method for transmitting and receiving uplink control information between a terminal and a base station on a physical uplink shared channel (PUSCH) without data (e.g., UL-SCH) and operation of devices supporting the same.
1. A method for transmitting uplink control information (UCI) at a user equipment (UE) to a base station (BS) in a wireless communication system, the method comprising:
receiving, from the BS, scaling information for acknowledgement information through higher layer signaling;
determining a number of first coded modulation symbols for the acknowledgement information on physical uplink shared channel (PUSCH) without uplink shared channel (UL-SCH) based on the scaling information;
determining a number of second coded modulation symbols for channel state information (CSI) by subtracting the number of the first coded modulation symbols from a number of resource elements that can be used for transmission of the UCI including the acknowledgement information and the CSI; and
transmitting, to the BS, the UCI on the PUSCH based on the number of the first coded modulation symbols and the number of the second coded modulation symbols,
wherein, based on that the CSI includes CSI part 1 and CSI part 2, a number of third coded modulation symbols for the CSI part 1 satisfies below equation 1, and
a number of fourth coded modulation symbols for the CSI part 2 satisfies below equation 2,
where Q′ ACK denotes the number of the first coded modulation symbols,
where O CSI,1 denotes payload size for the CSI part 1,
where L CSI,1 denotes a number of CRC (Cyclic Redundancy Check) bits for the CSI part 1,
where β offset CSI,1 denotes beta offset value for the CSI part 1,
where Q m denotes modulation order of the UCI transmitted in the PUSCH,
where c 0 denotes a target code rate of the PUSCH without the UL-SCH,
where M sc Φ UCI (l) denotes a number of resource elements that can be used for transmission of the UCI in symbol index l,
where N symb,all PUSCH denotes a total number of symbols of the PUSCH.
2. The method of claim 1 ,
wherein a sum of the number of the third coded modulation symbols and the number of the fourth coded modulation symbols is the number of the second coded modulation symbols.
3. The method of claim 1 ,
wherein when a plurality of PUSCHs in which a transmission interval is overlapped with a physical uplink control channel (PUCCH) in which transmission of the UCI is scheduled comprises one or more first PUSCHs scheduled by corresponding uplink grants and one or more second PUSCHs configured without corresponding uplink grants,
the PUSCH in which the UCI is transmitted is one of the one or more first PUSCHs.
4. The method of claim 3 ,
wherein the PUSCH in which the UCI is transmitted corresponds to a PUSCH to be transmitted first among the one or more first PUSCHs.
5. A method for receiving uplink control information (UCI) by a base station (BS) from a user equipment (UE) in a wireless communication system, the method comprising:
transmitting, to the UE, scaling information for acknowledgement information through higher layer signaling; and
receiving from the UE, the UCI on a physical uplink shared channel (PUSCH) without a uplink shared channel (UL-SCH),
wherein the UCI includes the acknowledgement information and channel state information (CSI), and the UCI is received based on a number of first coded modulation symbols for the acknowledgement information and a number of second coded modulation symbols for the CSI,
wherein the number of the first coded modulation symbols is determined based on the scaling information,
wherein the number of the second coded modulation symbols is determined by subtracting the number of the first coded modulation symbols from a number of resource elements that can be used for transmission of the UCI,
wherein, based on that the CSI includes CSI part 1 and CSI part 2, a number of third coded modulation symbols for the CSI part 1 satisfies below equation 1, and
a number of fourth coded modulation symbols for the CSI part 2 satisfies below equation 2,
where Q′ ACK denotes the number of the first coded modulation symbols,
where O CSI,1 denotes payload size for the CSI part 1,
where L CSI,1 denotes a number of CRC (Cyclic Redundancy Check) bits for the CSI part 1,
where β offset CSI, 1 denotes beta offset value for the CSI part 1,
where Q m denotes modulation order of the UCI transmitted in the PUSCH,
where c 0 denotes a target code rate of the PUSCH without the UL-SCH,
where M sc Φ UCI (l) denotes a number of resource elements that can be used for transmission of the UCI in symbol index l,
where N symb,all PUSCH denotes a total number of symbols of the PUSCH.
6. The method of claim 5 ,
wherein a sum of the number of the third coded modulation symbols and the number of the fourth coded modulation symbols is the number of the second coded modulation symbols.
7. The method of claim 5 ,
wherein when a plurality of PUSCHs in which a transmission interval is overlapped with a physical uplink control channel (PUCCH) in which transmission of the UCI is scheduled comprises one or more first PUSCHs scheduled by corresponding uplink grants and one or more second PUSCHs configured without corresponding uplink grants,
the PUSCH in which the UCI is transmitted is one of the one or more first PUSCHs.
8. The method of claim 7 ,
wherein the PUSCH in which the UCI is transmitted corresponds to a PUSCH to be transmitted first among the one or more first PUSCHs.
9. A user equipment (UE) configured to transmit uplink control information (UCI) to a base station (BS) in a wireless communication system, the UE comprising:
a transmitter;
a receiver; and
a processor connected to the transmitter and the receiver to operate,
wherein the processor is configured to:
receive, from the BS, scaling information for acknowledgement information through higher layer signaling;
determine a number of first coded modulation symbols for the acknowledgement information on physical uplink shared channel (PUSCH) without uplink shared channel (UL-SCH) based on the scaling information;
determine a number of second coded modulation symbols for channel state information (CSI) by subtracting the number of the first coded modulation symbols from a number of resource elements that can be used for transmission of the UCI including the acknowledgement information and the CSI; and
transmit to the BS, the UCI on the PUSCH based on the number of the first coded modulation symbols and the number of the second coded modulation symbols,
wherein, based on that the CSI includes CSI part 1 and CSI part 2, a number of third coded modulation symbols for the CSI part 1 satisfies below equation 1, and
a number of fourth coded modulation symbols for the CSI part 2 satisfies below equation 2,
where Q′ ACK denotes the number of the first coded modulation symbols,
where O CSI,1 denotes payload size for the CSI part 1,
where L CSI,1 denotes a number of CRC (Cyclic Redundancy Check) bits for the CSI part 1,
where β offset CSI,1 denotes beta offset value for the CSI part 1,
where Q m denotes modulation order of the UCI transmitted in the PUSCH,
where c 0 denotes a target code rate of the PUSCH without the UL-SCH,
where M sc Φ UCI (l) denotes a number of resource elements that can be used for transmission of the UCI in symbol index l,
where N symb,all PUSCH denotes a total number of symbols of the PUSCH.
10. A base station (BS) configured to receive uplink control information (UCI) from a user equipment (UE) in a wireless communication system, the UE comprising:
a transmitter;
a receiver; and
a processor connected to the transmitter and the receiver to operate,
wherein the processor is configured to:
transmit, to the UE, scaling information for acknowledgement information through higher layer signaling; and
receive, from the UE, the UCI on a physical uplink shared channel (PUSCH) without a uplink shared channel (UL-SCH),
wherein the UCI includes the acknowledgement information and channel state information (CSI), and the UCI is received based on a number of first coded modulation symbols for the acknowledgement information and a number of second coded modulation symbols for the CSI,
wherein the number of the first coded modulation symbols is determined based on the scaling information,
wherein the number of the second coded modulation symbols is determined by subtracting the number of the first coded modulation symbols from a number of resource elements that can be used for transmission of the UCI,
wherein, based on that the CSI includes CSI part 1 and CSI part 2, a number of third coded modulation symbols for the CSI part 1 satisfies below equation 1, and
a number of fourth coded modulation symbols for the CSI part 2 satisfies below equation 2,
where Q′ ACK denotes the number of the first coded modulation symbols,
where O CSI,1 denotes payload size for the CSI part 1,
where L CSI,1 denotes a number of CRC (Cyclic Redundancy Check) bits for the CSI part 1,
where β offset CSI,1 denotes beta offset value for the CSI part 1,
where Q m denotes modulation order of the UCI transmitted in the PUSCH,
where c 0 denotes a target code rate of the PUSCH without the UL-SCH,
where M sc Φ UCI (l) denotes a number of resource elements that can be used for transmission of the UCI in symbol index l,
where N symb,all PUSCH denotes a total number of symbols of the PUSCH.