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 receiving uplink control information (UCI) through a physical uplink control channel (PUCCH) in a wireless communication system, the method performed by a base station and comprising:
transmitting data to a user equipment; and
receiving at least one type of UCI, transmitted from the user equipment, through a PUCCH of a subframe,
wherein transmission power of the PUCCH is determined based on a PUCCH format dependent value, PUCCH formats being classified according to a modulation scheme and the number of bits transmitted in the subframe,
wherein if the PUCCH format is PUCCH format 3 which uses quadrature phase shift keying (QPSK) as the modulation scheme and in which 48 bits can be transmitted, and if the at least one type of UCI includes an acknowledgement/not-acknowledgement (ACK/NACK) for the data and periodic channels state information (CSI), the PUCCH format dependent value is determined based on the number of bits of the ACK/NACK and the number of bits of the periodic CSI, and
wherein:
if PUCCH format 3 is configured to be transmitted through two antenna ports or if a total sum of the at least one type of UCI is larger than 11 bits, the PUCCH format dependent value is determined as Equation 1 given below, and
if the at least one type of UCI is transmitted through the single antenna port and a total sum of the at least one type of UCI 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 the number of bits of the ACK/NACK,
n CQI represents the number of bits of the periodic CSI, and
n SR is 1 or 0 according to a configuration for a scheduling request (SR) for the user equipment.
2. The method of claim 1 , wherein:
when a serving cell in which the user equipment operates is a primary cell in which the user equipment performs an initial connection establishment procedure or a connection reestablishment procedure with a base station, the transmission power is determined as a minimum value of maximum output power of the user equipment set in the subframe and the power determined based on the PUCCH format dependent value.
3. The method of claim 1 , wherein when the ACK/NACK is transmitted through modulation of the reference signal symbol included in PUCCH format 3, the number of bits of the ACK/NACK transmitted through the modulation of the reference signal symbol is not included in n HARQ .
4. The method of claim 1 , wherein if the at least one type of UCI includes only the acknowledgement/not-acknowledgement (ACK/NACK) or scheduling request (SR) and the total sum of the at least one type of UCI is larger than 11 bits or PUCCH format 3 is configured to be transmitted through two antenna ports, the PUCCH format dependent value is determined in Equation 3 given below and in other cases, the PUCCH format dependent value is determined in Equation 4,
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 the number of bits of the ACK/NACK, and n SR is 1 in a case where the subframe is configured for the scheduling request (SR) for the user equipment not having any associated transport block for uplink shared channel (UL-SCH) and n SR is 0 in a case where the subframe is configured for a SR for the user equipment having any associated transport block for UL-SCH.
5. The method of claim 1 , wherein the at least one type of UCI is joint-coded.
6. The method of claim 1 , wherein the n SR is 1 in a case where the subframe is configured for a scheduling request (SR) for the user equipment not having any associated transport block for uplink shared channel (UL-SCH) and the n SR is 0 in a case where the subframe is configured for a SR for the user equipment having any associated transport block for UL-SCH.
7. Base station, 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 for:
transmitting data to a user equipment; and
receiving at least one type of UCI, transmitted from the user equipment, through a PUCCH of a subframe,
wherein transmission power of the PUCCH is determined based on a PUCCH format dependent value, PUCCH formats being classified according to a modulation scheme and the number of bits transmitted in the subframe,
wherein if the PUCCH format is PUCCH format 3 which uses quadrature phase shift keying (QPSK) as the modulation scheme and in which 48 bits can be transmitted, and if the at least one type of UCI includes an acknowledgement/not-acknowledgement (ACK/NACK) for the data and periodic channels state information (CSI), the PUCCH format dependent value is determined based on the number of bits of the ACK/NACK and the number of bits of the periodic CSI, and
wherein:
if PUCCH format 3 is configured to be transmitted through two antenna ports or if a total sum of the at least one type of UCI is larger than 11 bits, the PUCCH format dependent value is determined as Equation 1 given below, and
if the at least one type of UCI is transmitted through the single antenna port and a total sum of the at least one type of UCI 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 the number of bits of the ACK/NACK,
n CQI represents the number of bits of the periodic CSI, and
n SR is 1 or 0 according to a configuration for a scheduling request (SR) for the user equipment.
8. A method for transmitting, by user equipment, uplink control information (UCI) through a physical uplink control channel (PUCCH) in a wireless communication system, the method comprising:
determining, based on a PUCCH format dependent value, transmission power to be applied to an uplink control channel of a subframe, wherein PUCCH formats are classified according to a modulation scheme and the number of bits transmitted in the subframe; and
transmitting at least one type of UCI at the determined transmission power in the uplink control channel,
wherein if the PUCCH format is PUCCH format 3 which uses quadrature phase shift keying as the modulation scheme and in which 48 bits can be transmitted, and if the at least one type of UCI includes an acknowledgement/not-acknowledgement (ACK/NACK) and periodic channels state information (CSI), the PUCCH format dependent value is determined based on the number of bits of the ACK/NACK and the number of bits of the periodic CSI, and
wherein:
if PUCCH format 3 is configured to be transmitted through two antenna ports or if a total sum of the at least one type of UCI is larger than 11 bits, the PUCCH format dependent value is determined as Equation 1 given below, and
if the at least one type of UCI is transmitted through the single antenna port and a total sum of the at least one type of UCI 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 the number of bits of the ACK/NACK,
n CQI represents the number of bits of the periodic CSI, and
n SR is 1 or 0 according to a configuration for a scheduling request (SR) for the user equipment.
9. The method of claim 8 , wherein:
when a serving cell in which the user equipment operates is a primary cell in which the user equipment performs an initial connection establishment procedure or a connection reestablishment procedure with a base station,
the transmission power is determined as a minimum value of maximum output power of the user equipment set in the subframe and the power determined based on the PUCCH format dependent value.
10. The method of claim 8 , wherein when the ACK/NACK is transmitted through modulation of the reference signal symbol included in PUCCH format 3, the number of bits of the ACK/NACK transmitted through the modulation of the reference signal symbol is not included in n HARQ .
11. The method of claim 8 , wherein if the at least one type of UCI includes only the acknowledgement/not-acknowledgement (ACK/NACK) or scheduling request (SR) and the total sum of the at least one type of UCI is larger than 11 bits or PUCCH format 3 is configured to be transmitted through two antenna ports,
the PUCCH format dependent value is determined in Equation 3 given below and in other cases, the PUCCH format dependent value is determined in Equation 4,
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 the number of bits of the ACK/NACK, and n SR is 1 in a case where the subframe is configured for the scheduling request (SR) for the user equipment not having any associated transport block for uplink shared channel (UL-SCH) and n SR is 0 in a case where the subframe is configured for a SR for the user equipment having any associated transport block for UL-SCH.
12. The method of claim 8 , wherein the at least one type of UCI is joint-coded.
13. The method of claim 8 , wherein the n SR is 1 in a case where the subframe is configured for a scheduling request (SR) for the user equipment not having any associated transport block for uplink shared channel (UL-SCH) and the n SR is 0 in a case where the subframe is configured for a SR for the user equipment having any associated transport block for UL-SCH.
14. User equipment, 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 for:
determining, based on a PUCCH format dependent value, transmission power to be applied to an uplink control channel of a subframe, wherein PUCCH formats are classified according to a modulation scheme and the number of bits transmitted in the subframe; and
transmitting at least one type of UCI at the determined transmission power in the uplink control channel,
wherein if the PUCCH format is PUCCH format 3 which uses quadrature phase shift keying as the modulation scheme and in which 48 bits can be transmitted, and if the at least one type of UCI includes an acknowledgement/not-acknowledgement (ACK/NACK) and periodic channels state information (CSI), wherein the PUCCH format dependent value is determined based on the number of bits of the ACK/NACK and the number of bits of the periodic CSI, and
wherein:
if PUCCH format 3 is configured to be transmitted through two antenna ports or if a total sum of the at least one type of UCI is larger than 11 bits, the PUCCH format dependent value is determined as Equation 1 given below, and
if the at least one type of UCI is transmitted through the single antenna port and a total sum of the at least one type of UCI 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 the number of bits of the ACK/NACK,
n CQI represents the number of bits of the periodic CSI, and
n SR is 1 or 0 according to a configuration for a scheduling request (SR) for the user equipment.