Method and apparatus for determining pathloss in wireless communication system
The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security or safety services.
1. A method performed by a terminal in a wireless communication system, the method comprising:
receiving, from a base station, a radio resource control (RRC) message;
identifying whether information for a pathloss reference is included in the RRC message;
transmitting, on a first serving cell to the base station, a physical uplink control channel (PUCCH) based on a first transmission power, wherein the first transmission power is identified based on a downlink pathloss of a reference signal (RS) on an active downlink bandwidth part (BWP) of a second serving cell, in case that the information for the pathloss reference indicates the second serving cell; and
transmitting, on the first serving cell to the base station, the PUCCH based on a second transmission power, wherein the second transmission power is identified based on a downlink pathloss of the RS on the active downlink BWP of the first serving cell, in case that the information for the pathloss reference is not included in the RRC message.
2. The method of claim 1 , further comprising:
receiving, from the base station, first information on at least one RS for identifying a pathloss for the first serving cell and second information on at least one RS for identifying a pathloss for the second serving cell,
wherein the RS on the active downlink BWP of the first serving cell is identified based on the first information, and the RS on the active downlink BWP of the second serving cell is identified based on the second information.
3. The method of claim 2 , wherein each of the at least one RS associated with the first information and the at least one RS associated with the second information comprises a synchronization signal physical broadcast channel (SS/PBCH) block, the SS/PBCH block including a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a demodulation reference signal (DMRS) and a PBCH.
4. The method of claim 2 , wherein each of the at least one RS associated with the first information and the at least one RS associated with the second information comprises a channel state information reference signal (CSI-RS).
5. A method performed by a base station in a wireless communication system, the method comprising:
transmitting, to a terminal, a radio resource control (RRC) message;
receiving, on a first serving cell from the terminal, a physical uplink control channel (PUCCH) based on a first transmission power, wherein the first transmission power depends on a downlink pathloss of a reference signal (RS) on an active downlink bandwidth part (BWP) of a second serving cell, in case that information for a pathloss reference is included in the RRC message and the information for the pathloss reference indicates the second serving cell; and
receiving, on the first serving cell from the terminal, the PUCCH based on a second transmission power, wherein the second transmission power depends on a downlink pathloss of the RS on the active downlink BWP of the first serving cell, in case that the information for the pathloss reference is not included in the RRC message.
6. The method of claim 5 , further comprising:
transmitting, to the terminal, first information on at least one RS for a pathloss for the first serving cell and second information on at least one RS for a pathloss for the second serving cell,
wherein the RS on the active downlink BWP of the first serving cell is based on the first information, and the RS on the active downlink BWP of the second serving cell is based on the second information.
7. The method of claim 6 , wherein each of the at least one RS associated with the first information and the at least one RS associated with the second information comprises a synchronization signal physical broadcast channel (SS/PBCH) block, the SS/PBCH block including a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a demodulation reference signal (DMRS) and a PBCH.
8. The method of claim 6 , wherein each of the at least one RS associated with the first information and the at least one RS associated with the second information comprises a channel state information reference signal (CSI-RS).
9. A terminal in a wireless communication system, the terminal comprising:
a transceiver configured to transmit or receive a signal; and
a controller configured to:
receive, from a base station, a radio resource control (RRC) message,
identify whether information for a pathloss reference is included in the RRC message,
transmit, on a first serving cell to the base station, a physical uplink control channel (PUCCH) based on a first transmission power, wherein the first transmission power is identified based on a downlink pathloss of a reference signal (RS) on an active downlink bandwidth part (BWP) of a second serving cell, in case that the information for the pathloss reference indicates the second serving cell, and
transmit, on the first serving cell to the base station, the PUCCH based on a second transmission power, wherein the second transmission power is identified based on a downlink pathloss of the RS on the active downlink BWP of the first serving cell, in case that the information for the pathloss reference is not included in the RRC message.
10. The terminal of claim 9 , wherein the controller is further configured to:
receive, from the base station, first information on at least one RS for identifying a pathloss for the first serving cell and second information on at least one RS for identifying a pathloss for the second serving cell, and
wherein the RS on the active downlink BWP of the first serving cell is identified based on the first information, and the RS on the active downlink BWP of the second serving cell is identified based on the second information.
11. The terminal of claim 10 , wherein each of the at least one RS associated with the first information and the at least one RS associated with the second information comprises a synchronization signal physical broadcast channel (SS/PBCH) block, the SS/PBCH block including a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a demodulation reference signal (DMRS) and a PBCH.
12. The terminal of claim 10 , wherein each of the at least one RS associated with the first information and the at least one RS associated with the second information comprises a channel state information reference signal (CSI-RS).
13. A base station in a wireless communication system, the base station comprising:
a transceiver configured to transmit or receive a signal; and
a controller configured to:
transmit, to a terminal, a radio resource control (RRC) message,
receive, on a first serving cell from the terminal, a physical uplink control channel (PUCCH) based on a first transmission power, wherein the first transmission power depends on a downlink pathloss of a reference signal (RS) on an active downlink bandwidth part (BWP) of a second serving cell, in case that information for a pathloss reference is included in the RRC message and the information for the pathloss reference indicates the second serving cell, and
receive, on the first serving cell from the terminal, the PUCCH based on a second transmission power, wherein the second transmission power depends on a downlink pathloss of the RS on the active downlink BWP of the first serving cell, in case that the information for the pathloss reference is not included in the RRC message.
14. The base station of claim 13 , wherein the controller is further configured to:
transmit, to the terminal, first information on at least one RS for a pathloss for the first serving cell and second information on at least one RS for a pathloss for the second serving cell, and
wherein the RS on the active downlink BWP of the first serving cell is based on the first information, and the RS on the active downlink BWP of the second serving cell is based on the second information.
15. The base station of claim 14 , wherein each of the at least one RS associated with the first information and the at least one RS associated with the second information comprises a synchronization signal physical broadcast channel (SS/PBCH) block, the SS/PBCH block including a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a demodulation reference signal (DMRS) and a PBCH.
16. The base station of claim 14 , wherein each of the at least one RS associated with the first information and the at least one RS associated with the second information comprises a channel state information reference signal (CSI-RS).