Method and apparatus for uplink transmission in wireless communication system
A communication method and system for converging a 5 th -Generation (5G) communication system for supporting higher data rates beyond a 4 th -Generation (4G) system with a technology for Internet of Things (IoT) are provided, which 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 and safety services. An uplink transmission method is provided, which can increase an uplink coverage through improvement of reception reliability of uplink control information and data information.
1. A method by a terminal for performing a random access in a wireless communication system, the method comprising:
receiving a message including first information for configuring an uplink (UL), second information for configuring a supplementary uplink (SUL), and third information for performing the random access from a base station;
measuring a reference signal received power (RSRP) based on a signal received from the base station;
comparing the RSRP with a threshold value included in the third information for performing the random access;
determining an SUL carrier to perform the random access in case that the RSRP is smaller than the threshold value;
determining an UL carrier to perform the random access in case that the RSRP is equal to or larger than the threshold value; and
transmitting a random access preamble on the determined carrier based on the first information or the second information.
2. The method of claim 1 , wherein the transmitting of the random access preamble comprises:
identifying a target received power parameter of the random access preamble corresponding to the SUL carrier from the third information for performing the random access in case that the RSRP is smaller than the threshold value; and
transmitting the random access preamble on the SUL carrier based on the target received power parameter of the random access preamble corresponding to the SUL carrier.
3. The method of claim 1 , wherein the transmitting of the random access preamble comprises:
identifying a target received power parameter of the random access preamble corresponding to the UL carrier from the third information for performing the random access in case that the RSRP is equal to or larger than the threshold value; and
transmitting the random access preamble on the UL carrier based on the target received power parameter of the random access preamble corresponding to the UL carrier.
4. The method of claim 1 , wherein a frequency of the SUL carrier is lower than a frequency of the UL carrier.
5. The method of claim 1 , further comprising:
receiving information on transmission of a physical uplink control channel (PUCCH) from the base station on terminal-specific radio resource control (RRC) signaling; and
transmitting the PUCCH on the SUL carrier or the UL carrier based on the information on the transmission of the PUCCH,
wherein the first information comprises frequency information for the UL carrier, and the second information comprises frequency information for the SUL carrier.
6. A method by a base station for performing a random access in a wireless communication system, the method comprising:
generating a message including first information for configuring an uplink (UL), second information for configuring a supplementary uplink (SUL), and third information for performing the random access;
transmitting the generated message to a terminal; and
receiving a random access preamble for performing the random access on an SUL carrier or an UL carrier,
wherein the third information includes a threshold value for selecting between the UL carrier and the SUL carrier.
7. The method of claim 6 , further comprising:
transmitting, to the terminal, information on a carrier related to transmission of a physical uplink control channel (PUCCH) on terminal-specific radio resource control (RRC) signaling.
8. The method of claim 6 , wherein the first information comprises frequency information for the UL carrier, and the second information comprises frequency information for the SUL carrier.
9. A terminal in a wireless communication system, the terminal comprising;
a transceiver; and
a controller configured to:
control the transceiver to receive a message including first information for configuring an uplink (UL), second information for configuring a supplementary uplink (SUL), and third information for performing a random access from a base station,
measure a reference signal received power (RSRP) based on a signal received from the base station,
compare the RSRP with a threshold value included in the third information for performing the random access,
determine an SUL carrier to perform the random access in case that the RSRP is smaller than the threshold value,
determine an UL carrier to perform the random access in case that the RSRP is equal to or larger than the threshold value, and
control the transceiver to transmit a random access preamble on the determined carrier based on the first information or the second information.
10. The terminal of claim 9 , wherein the controller is configured to:
identify a target received power parameter of the random access preamble corresponding to the SUL carrier from the third information for performing the random access in case that the RSRP is smaller than the threshold value, and
control the transceiver to transmit the random access preamble on the SUL carrier based on the target received power parameter of the random access preamble corresponding to the SUL carrier.
11. The terminal of claim 9 , wherein the controller is configured to:
identify a target received power parameter of the random access preamble corresponding to the UL carrier from the third information for performing the random access in case that the RSRP is equal to or larger than the threshold value, and
control the transceiver to transmit the random access preamble on the UL carrier based on the target received power parameter of the random access preamble corresponding to the UL carrier.
12. The terminal of claim 9 , wherein a frequency of the SUL carrier is lower than a frequency of the UL carrier.
13. The terminal of claim 9 ,
wherein the controller is configured to:
control the transceiver to receive information on transmission of a physical uplink control channel (PUCCH) from the base station on terminal-specific radio resource control (RRC) signaling, and
control the transceiver to transmit the PUCCH on the SUL carrier or UL carrier based on the information on the transmission of the PUCCH, and
wherein the first information comprises frequency information for the UL carrier, and the second information comprises frequency information for the SUL carrier.
14. A base station in a wireless communication system, the base station comprising:
a transceiver; and
a controller configured to:
generate a message including first information for configuring an uplink (UL), second information for configuring a supplementary uplink (SUL), and third information for performing a random access,
control the transceiver to transmit the generated message to a terminal, and
control the transceiver to receive a random access preamble for performing the random access on an SUL carrier or an UL carrier,
wherein the third information includes a threshold value for selecting between the UL carrier and the SUL carrier.
15. The base station of claim 14 , wherein the controller is configured to control the transceiver to transmit to the terminal information on a carrier related to transmission of a physical uplink control channel (PUCCH) on terminal-specific radio resource control (RRC) signaling.
16. The base station of claim 14 , wherein the first information comprises frequency information for the UL carrier, and the second information comprises frequency information for the SUL carrier.