Method and apparatus for transmitting uplink control information in wireless communication system
Provided are a method for a terminal transmitting uplink control information (UCI) through a physical uplink control channel (PUCCH) in a wireless communication system, and a terminal using the method. A transmission power to be applied to the uplink control channel is determined on the basis of a value subordinate to a PUCCH format, and at least one type of UCI is transmitted from the physical uplink control channel by using the transmission power that is determined, wherein when the PUCCH format is PUCCH format 3, and the at least one type of UCI includes acknowledgement/negative-acknowledgement(ACK/NACK) and periodic channel state information (CSI), the value subordinate to the PUCCH format is determined on the basis of the number of bits of the ACK/NACK and the number of bits of the periodic CSI.
1. A method for transmitting uplink control information (UCI) through a physical uplink control channel (PUCCH) in a wireless communication system, the method performed by a user equipment (UE) and comprising:
determining transmission power to be applied to the PUCCH; and
transmitting at least one type of UCI through the PUCCH using the transmission power,
wherein the transmission power is determined based on a PUCCH format dependent value, and
wherein:
when the UE transmits acknowledgement/not-acknowledgement (ACK/NACK) information and periodic channels state information (CSI) through a PUCCH format 3,
if a total sum of the ACK/NACK information and the periodic CSI is larger than 11 bits, the PUCCH format dependent value is determined as Equation 1 given below, and
if a total sum of the ACK/NACK information and the periodic CSI is equal to or smaller than 11 bits, the PUCCH format dependent value is determined as Equation 2 given below,
h ( n CQI , n HARQ , n SR )=( n HARQ +n SR +n CQI −1)/3 [Equation 1]
h ( n CQI , n HARQ , n SR )=( n HARQ +n SR +n CQI −1)/2, [Equation 2]
in Equations 1 and 2 given above,
h(n CQI , n HARQ , n SR ) represents the PUCCH format dependent value,
n HARQ represents a number of bits of the ACK/NACK information,
n CQI represents a number of bits of the periodic CSI, and
n SR is 1 or 0.
2. The method of claim 1 , wherein the PUCCH format 3 is a PUCCH format which uses quadrature phase shift keying (QPSK) as the modulation scheme and in which 48 bits can be transmitted.
3. The method of claim 1 , wherein when the UE transmits ACK/NACK information and scheduling request (SR) through the PUCCH format 3,
if a total sum of the ACK/NACK information and SR is larger than 11 bits or if the UE is configured to transmit the PUCCH format 3 on two antenna ports, the PUCCH format dependent value is determined as Equation 3 given below and in other cases, the PUCCH format dependent value is determined as Equation 4 given below,
h ( n CQI , n HARQ , n SR )=( n HARQ +n SR +1)/3 [Equation 3]
h ( n CQI , n HARQ , n SR )=( n HARQ +n SR +1)/2, [Equation 4]
in Equations 3 and 4 given above, h(n CQI , n HARQ , n SR ) represents the PUCCH format dependent value, n HARQ represents a number of bits of the ACK/NACK information, and n SR is 1 or 0.
4. The method of claim 1 , wherein the n SR is 1 if a subframe used for transmitting the at least one type of UCI is configured for a scheduling request (SR) for the UE not having any associated transport block for uplink shared channel (UL-SCH) and n SR is 0 in other cases.
5. A user equipment (UE) for transmitting uplink control information (UCI) through a physical uplink control channel (PUCCH), the UE comprising:
a radio frequency (RF) unit transmitting or receiving a radio signal; and
a processor connected with the RF unit,
wherein the processor is configured to:
determine transmission power to be applied to the PUCCH, and
transmit at least one type of UCI through the PUCCH using the transmission power,
wherein the transmission power is determined based on a PUCCH format dependent value, and
wherein:
when the UE transmits acknowledgement/not-acknowledgement (ACK/NACK) information and periodic channels state information (CSI) through a PUCCH format 3,
if a total sum of the ACK/NACK information and the periodic CSI is larger than 11 bits, the PUCCH format dependent value is determined as Equation 1 given below, and
if a total sum of the ACK/NACK information and the periodic CSI is equal to or smaller than 11 bits, the PUCCH format dependent value is determined as Equation 2 given below,
h ( n CQI , n HARQ , n SR )=( n HARQ +n SR +n CQI −1)/3 [Equation 1]
h ( n CQI , n HARQ , n SR )=( n HARQ +n SR +n CQI −1)/2, [Equation 2]
in Equations 1 and 2 given above,
h(n CQI , n HARQ , n SR ) represents the PUCCH format dependent value,
n HARQ represents a number of bits of the ACK/NACK information,
n CQI represents a number of bits of the periodic CSI, and
n SR is 1 or 0.
6. The UE of claim 5 , wherein the PUCCH format 3 is a PUCCH format which uses quadrature phase shift keying (QPSK) as the modulation scheme and in which 48 bits can be transmitted.
7. The UE of claim 5 , wherein when the UE transmits ACK/NACK information and scheduling request (SR) through the PUCCH format 3,
if a total sum of the ACK/NACK information and SR is larger than 11 bits or if the UE is configured to transmit the PUCCH format 3 on two antenna ports, the PUCCH format dependent value is determined as Equation 3 given below and in other cases, the PUCCH format dependent value is determined as Equation 4 given below,
h ( n CQI , n HARQ , n SR )=( n HARQ +n SR +1)/3 [Equation 3]
h ( n CQI , n HARQ , n SR )=( n HARQ +n SR +1)/2, [Equation 4]
in Equations 3 and 4 given above, h(n CQI , n HARQ , n SR ) represents the PUCCH format dependent value, n HARQ represents a number of bits of the ACK/NACK information, and n SR is 1 or 0.
8. The UE of claim 5 , wherein the n SR is 1 if a subframe used for transmitting the at least one type of UCI is configured for a scheduling request (SR) for the UE not having any associated transport block for uplink shared channel (UL-SCH) and n SR is 0 in other cases.