Method and device for determining power control offset for PUCCH
View Patent ↗Embodiments of the present application provide a method and a device for determining a power control offset for a PUCCH, for resolving the issue in which existing methods for determining a power control offset for a PUCCH are incompatible with new radio communications systems. The method comprises: determining the number of bits, O UCI , of first uplink control information (UCI) required to be transmitted on a PUCCH, and determining the number, N RE , of resource elements (RE) carrying the first UCI in the PUCCH; and determining, according to formula (I), an offset Δ PUCCH_TF,c (i) for calculation of power control of the PUCCH, and g(O UCI /N RE ) is a function having O UCI and N RE as variables thereof.
1. A method for determining a Physical Uplink Control Channel, PUCCH, power control offset, comprising:
determining a quantity O UCI of bits of first Uplink Control Information, UCI, required to be transmitted on a PUCCH, and determining a quantity N RE of Resource Elements, REs, bearing the first UCI in the PUCCH; and
determining the offset Δ PUCCH_TF,c (i) for PUCCH power control calculation according to a formula Δ PUCCH_TF,c (i)=10 log 10 (2 g(O UCI /N RE ) −1), wherein g(O UCI /N RE ) is a linear fitting function with O UCI and N RE being variables, and g(O UCI /N RE ) is a*(O UCI /N RE )+b, wherein a and b are tuning coefficients, 1.5≤a≤2.5, and −1≤b≤1.
2. The method of claim 1 , wherein the determining the quantity N RE of REs bearing the UCI in the PUCCH, comprises:
determining N RE as ⅔*N symb PUCCH *M SC PUCCH when a PUCCH format 2 is used to transmit the first UCI, wherein N symb PUCCH is a quantity of PUCCH symbols occupied by UCI defined in the PUCCH format 2, and M SC PUCCH is a PUCCH bandwidth occupied by UCI defined in the PUCCH format 2;
and/or,
determining NRE as (N symb PUCCH −N DMRS-symb PUCCH )*M SC PUCCH when a PUCCH format 3/4 is used to transmit the first UCI, wherein N symb PUCCH is a quantity of PUCCH symbols occupied by UCI defined in the PUCCH format 3/4, N DMRS-symb PUCCH is a quantity of PUCCH symbols occupied by a Demodulation Reference Signal, DMRS, defined in the PUCCH format 3/4, and M SC PUCCH is a PUCCH bandwidth occupied by UCI defined in the PUCCH format 3/4.
3. The method of claim 1 , wherein a and b comprise a plurality of preset values respectively, and the determining the offset Δ PUCCH_TF,c (i) for PUCCH power control calculation according to the formula Δ PUCCH_TF,c (i)=10 log 10 (2 g(O UCI /N RE ) −1), comprises:
determining values of a and b corresponding to a PUCCH format used for transmitting the first UCI, the O UCI of the first UCI, and a frequency hopping situation.
4. A terminal, comprising:
a memory configured to store instructions;
a processor configured to read the instructions in the memory to:
determine a quantity O UCI of bits of first Uplink Control Information, UCI, required to be transmitted on a PUCCH, and determine a quantity N RE of Resource Elements, REs, bearing the first UCI in the PUCCH; and determine an offset Δ PUCCH_TF,c (i) for PUCCH power control calculation according to a formula Δ PUCCH_TF,c (i)=10 log 10 (2 g(O UCI /N RE ) −1), wherein g(O UCI /N RE ) is a linear fitting function with O UCI and N RE being variables, and g(O UCI /N RE ) is a*(O UCI /N RE )+b, wherein a and b are tuning coefficients, 1.5≤a≤2.5, and −1≤b≤1.
5. The terminal of claim 4 , wherein the processor determines the quantity N RE of REs bearing the UCI in the PUCCH by:
determining N RE as ⅔*N symb PUCCH *M SC PUCCH when a PUCCH format 2 is used to transmit the first UCI, wherein N symb PUCCH is a quantity of PUCCH symbols occupied by UCI defined in the PUCCH format 2, and M SC PUCCH is a PUCCH bandwidth occupied by UCI defined in the PUCCH format 2;
and/or,
determining N RE as (N symb PUCCH −N DMRS-symb PUCCH )*M SC PUCCH when a PUCCH format 3/4 is used to transmit the first UCI, wherein N symb PUCCH is a quantity of PUCCH symbols occupied by UCI defined in the PUCCH format 3/4, N DMRS-symb PUCCH is a quantity of PUCCH symbols occupied by a Demodulation Reference Signal, DMRS, defined in the PUCCH format 3/4, and M SC PUCCH is a PUCCH bandwidth occupied by UCI defined in the PUCCH format 3/4.
6. The terminal of claim 4 , wherein a and b comprise a plurality of preset values respectively, and the processor determines the offset Δ PUCCH_TF,c (i) for PUCCH power control calculation according to the formula Δ PUCCH_TF,c (i)=10 log 10 (2 g(O UCI /N RE ) −1) by:
determining values of a and b corresponding to a PUCCH format used for transmitting the first UCI, the O UCI of the first UCI, and a frequency hopping situation.
7. A computer readable storage medium storing computer instructions, wherein the computer instructions running on a computer device cause the computer device to perform the method of claim 1 .