Method, apparatus, and system for RACH resource configuration and RACH resource selection mechanism
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. 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 and safety services. The disclosure provides a method of a terminal, including receiving random access resource configuration information and quasi co-location (QCL) information from a base station, measuring a channel state information-reference signal (CSI-RS), identifying a random access resource based on the CSI-RS, the QCL information and the random access resource configuration information, and transmitting a random access preamble based on the random access resource.
1. A method performed by a terminal in a wireless communication system, the method comprising:
obtaining random access resource configuration information including random access channel (RACH) resource information associated with a synchronization signal (SS) and RACH resource information associated with a channel state information-reference signal (CSI-RS);
identifying a random access resource based on a measurement result of a CSI-RS, quasi-colocation (QCL) information, and the random access resource configuration information, wherein the QCL information indicates an SS quasi-colocated with the CSI-RS; and
transmitting a random access preamble based on the random access resource.
2. The method of claim 1 , wherein the random access preamble is selected based on the random access resource configuration information, the QCL information, and the CSI-RS.
3. The method of claim 1 , wherein the SS quasi-colocated with the CSI-RS is identified based on CSI-RS configuration information associated with the CSI-RS.
4. The method of claim 1 ,
wherein the QCL information includes an identifier of the SS quasi-colocated with the CSI-RS, and
wherein the random access resource is identified based on a resource included in the RACH resource information associated with the SS.
5. The method of claim 1 , wherein, in case that the RACH resource information associated with the CSI-RS includes random access preamble information, the random access preamble is selected based on the random access preamble information.
6. A terminal in a wireless communication system, the terminal comprising:
a transceiver; and
a controller configured to:
obtain random access resource configuration information including random access channel (RACH) resource information associated with a synchronization signal (SS) and RACH resource information associated with a channel state information-reference signal (CSI-RS),
identify a random access resource based on a measurement result of a CSI-RS, quasi-colocation (QCL) information, and the random access resource configuration information, wherein the QCL information indicates an SS quasi-colocated with the CSI, and
transmit, via the transceiver, a random access preamble based on the random access resource.
7. The terminal of claim 6 , wherein the random access preamble is selected based on the random access resource configuration information, the QCL information, and the CSI-RS.
8. The terminal of claim 6 , wherein the SS quasi-colocated with the CSI-RS is identified based on CSI-RS configuration information associated with the CSI-RS.
9. The terminal of claim 6 ,
wherein the QCL information includes an identifier of the SS quasi-colocated with the CSI-RS, and
wherein the random access resource is identified based on a resource included in the RACH resource information associated with the SS.
10. The terminal of claim 6 , wherein, in case that the RACH resource information associated with the CSI-RS includes random access preamble information, the random access preamble is selected based on the random access preamble information.
11. A method performed by a base station in a wireless communication system, the method comprising:
transmitting random access resource configuration information including random access channel (RACH) resource information associated with a synchronization signal (SS) and RACH resource information associated with a channel state information-reference signal (CSI-RS);
receiving a random access preamble based on a random access resource from a terminal; and
transmitting a random access response to the terminal,
wherein the random access resource is identified based on a measurement result of a CSI-RS, quasi-colocation (QCL) information, and the random access resource configuration information, and
wherein the QCL information indicates an SS quasi-colocated with the CSI-RS.
12. The method of claim 11 , wherein the random access preamble is selected based on the random access resource configuration information, the QCL information, and the CSI-RS.
13. The method of claim 11 , wherein the SS quasi-colocated with the CSI-RS is identified based on CSI-RS configuration information associated with the CSI-RS.
14. The method of claim 11 ,
wherein the QCL information includes an identifier of the SS quasi-colocated with the CSI-RS, and
wherein the random access resource is identified based on a resource included in the RACH resource information associated with the SS.
15. The method of claim 11 , wherein, in case that the RACH resource information associated with the CSI-RS includes random access preamble information, the random access preamble is selected based on the random access preamble information.
16. A base station in a wireless communication system, the base station comprising:
a transceiver; and
a controller configured to:
transmit, to a terminal via the transceiver, random access resource configuration information including random access channel (RACH) resource information associated with a synchronization signal (SS) and RACH resource information associated with a channel state information-reference signal (CSI-RS),
receive, from the terminal via the transceiver, a random access preamble based on a random access resource, and
transmit, to the terminal via the transceiver, a random access response,
wherein the random access resource is identified based on a measurement result of a CSI-RS, quasi-colocation (QCL) information, and the random access resource configuration information, and
wherein the QCL information indicates an SS quasi-colocated with the CSI-RS.
17. The terminal of claim 16 , wherein the random access preamble is selected based on the random access resource configuration information, the QCL information, and the CSI-RS.
18. The terminal of claim 16 , wherein the SS quasi-colocated with the CSI-RS is identified based on CSI-RS configuration information associated with the CSI-RS.
19. The terminal of claim 16 ,
wherein the QCL information includes an identifier of the SS quasi-colocated with the CSI-RS, and
wherein the random access resource is identified based on a resource included in the RACH resource information associated with the SS.
20. The terminal of claim 16 , wherein, in case that the RACH resource information associated with the CSI-RS includes random access preamble information, the random access preamble is selected based on the random access preamble information.