Method for controlling wireless communication in beamforming-based cellular system
The present disclosure relates to a communication scheme and system for converging a 5 th generation (5G) communication system for supporting a data rate higher than that of a 4 th generation (4G) system with an internet of things (IoT) technology. The present disclosure is applicable to intelligent services (e.g., smart homes, smart buildings, smart cities, smart cars, connected cars, health care, digital education, retails, and security and safety-related services) based on the 5G communication technology and the IoT-related technology. The present disclosure relates to a radio network technology for use in a beamforming-based cellular system. A method for compensating phase noise by a user equipment (UE) is provided. The method comprises receiving, from a base station, association information between at least one phase tracking reference signal (PTRS) port and at least one demodulation reference signal (DMRS) port, identifying phase noise between the UE and the base station based on the association information, and compensating for the phase noise based on the result of the identification.
1. A method for compensating phase noise by a user equipment (UE) in a wireless communication system, the method comprising:
identifying whether a phase tracking reference signal (PTRS) port and at least one demodulation reference signal (DMRS) port are quasi co-located with respect to a delay spread, a doppler spread, a doppler shift, and an average delay, based on an assumption parameter including association information indicating a relationship of an electrical connection between the PTRS port and the at least on DMRS port;
receiving, from a base station, a PTRS based on the identification that the PTRS port and the at least one DMRS port are quasi co-located;
acquiring information on the relationship of the electrical connection between the PTRS and the at least one DMRS port based on the association information;
estimating phase noise between the UE and the base station based on the PTRS and the acquired information; and
acquiring data based on the estimated phase noise.
2. The method of claim 1 , wherein the PTRS port is used to estimate the phase noise occurring in an oscillator corresponding to the PTRS port in a multi-transmission and reception point (TRP) environment.
3. A user equipment (UE) for compensating phase noise in a wireless communication system, the UE comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
identify whether a phase tracking reference signal (PTRS) port and at least one demodulation reference signal (DMRS) port are quasi co-located with respect to a delay spread, a doppler spread, a doppler shift, and an average delay, based on an assumption parameter including association information indicating a relationship of an electrical connection between the PTRS port and the at least one DMRS port;
receive, from a base station, a PTRS based on the identification that the PTRS port and the at least one DMRS port are quasi co-located;
acquiring information on the relationship of the electrical connection between the PTRS and the at least on DMRS port based on the association information,
estimate phase noise between the UE and the base station based on the PTRS and the association information; and
acquire data based on the estimated phase noise.
4. The UE of claim 3 , wherein the PTRS port is used to estimate the phase noise occurring in an oscillator corresponding to the PTRS port in a multi-transmission and reception point (TRP) environment.