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 of a terminal, the method comprising:
obtaining, by the terminal, random access resource configuration information and quasi co-location (QCL) information from a base station, the random access resource configuration information including information on a synchronization signal (SS) and information on a channel state information-reference signal (CSI-RS);
measuring, by the terminal, a CSI-RS;
identifying, by the terminal, a random access resource based on a measurement result of the CSI-RS, the QCL information and the random access resource configuration information; and
transmitting, by the terminal, a random access preamble based on the random access resource,
wherein the QCL information indicates an SS having a QCL relation with the CSI-RS.
2. The method of claim 1 , wherein the random access resource configuration information includes the random access resource associated with the SS.
3. The method of claim 1 , wherein the QCL information includes a CSI-RS identifier and an SS identifier.
4. The method of claim 1 ,
wherein an SS is identified based on the measurement result of the CSI-RS and the QCL information, and
wherein the random access resource is identified based on the identified SS and the random access resource configuration information.
5. A terminal, comprising:
a transceiver configured to transmit and receive signals; and
at least one processor configured to:
obtain random access resource configuration information and quasi co-location (QCL) information from a base station, the random access resource configuration information including information on a synchronization signal (SS) and information on a channel state information-reference signal (CSI-RS),
measure a CSI-RS,
identify a random access resource based on a measurement result of the CSI-RS, the QCL information and the random access resource configuration information, and
transmit a random access preamble based on the random access resource,
wherein the QCL information indicates an SS having a QCL relation with the CSI-RS.
6. The terminal of claim 5 ,
wherein the random access resource configuration information includes the random access resource, and
wherein the random access resource is associated with the SS.
7. The terminal of claim 5 , wherein the QCL information includes a CSI-RS identifier and an SS identifier.
8. The terminal of claim 5 ,
wherein an SS is identified based on the measurement result of the CSI-RS and the QCL information, and
wherein the random access resource is identified based on the identified SS and the random access resource configuration information.
9. A method of a base station, the method comprising:
transmitting, by the base station, random access resource configuration information and quasi co-location (QCL) information to a terminal, the random access resource configuration information including information on a synchronization signal (SS) and information on a channel state information-reference signal (CSI-RS);
transmitting, by the base station, a CSI-RS to the terminal;
receiving a random access preamble based on a random access resource from the terminal; and
transmitting, by the base station, a random access response to the terminal,
wherein the random access resource is determined by the terminal based on a measurement result of the CSI-RS, the QCL information and the random access resource configuration information, and
wherein the QCL information indicates an SS having a QCL relation with the CSI-RS.
10. The method of claim 9 ,
wherein the random access resource configuration information includes the random access resource, and
wherein the random access resource is associated with the SS.
11. The method of claim 9 , wherein the QCL information includes a CSI-RS identifier and an SS identifier.
12. The method of claim 9 ,
wherein an SS is identified based on the measurement result of the CSI-RS and the QCL information, and
wherein the random access resource is identified based on the identified SS and the random access resource configuration information.
13. A base station, comprising:
a transceiver configured to transmit and receive signals; and
at least one processor configured to:
transmit random access resource configuration information and quasi co-location (QCL) information to a terminal, the random access resource configuration information including information on a synchronization signal (SS) and information on a channel state information-reference signal (CSI-RS),
transmit a CSI-RS to the terminal,
receive a random access preamble based on a random access resource from the terminal, and
transmit a random access response to the terminal,
wherein the random access resource is determined by the terminal based on a measurement result of the CSI-RS, the QCL information and the random access resource configuration information, and
wherein the QCL information indicates an SS having a QCL relation with the CSI-RS.
14. The base station of claim 13 ,
wherein the random access resource configuration information includes the random access resource, and
wherein the random access resource is associated with the SS.
15. The base station of claim 13 , wherein the QCL information includes a CSI-RS identifier and an SS identifier.
16. The base station of claim 13 ,
wherein an SS is identified based on the measurement result of the CSI-RS and the QCL information, and
wherein the random access resource is identified based on the identified SS and the random access resource configuration information.