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1. (WO2018203695) METHOD AND APPARATUS FOR PHASE TRACKING REFERENCE SIGNAL IN A WIRELESS COMMUNICATION SYSTEM

Pub. No.:    WO/2018/203695    International Application No.:    PCT/KR2018/005170
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Sat May 05 01:59:59 CEST 2018
IPC: H04L 5/00
Applicants: SAMSUNG ELECTRONICS CO., LTD.
Inventors: HUNUKUMBURE, Mythri
QI, Yinan
Title: METHOD AND APPARATUS FOR PHASE TRACKING REFERENCE SIGNAL IN A WIRELESS COMMUNICATION SYSTEM
Abstract:
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Described is a method for providing a Phase Tracking Reference Signal (PTRS) in a wireless communication system comprising at least a first base station and a second base station, and a mobile device. The first and second base stations cooperate to jointly support the mobile device. The method comprises identifying at least two mutually exclusive sets of frequency resources. The method further comprises mapping, by the first base station, at least a portion of PTRS information of the first base station to a first set of the frequency resources, mapping, by the first base station, a zero-power PTRS to a second set of the frequency resources, or leaving, by the first base station, the second set of frequency resources empty, and transmitting, by the first base station, a signal comprising the PTRS information of the first base station according to the frequency resource mapping. The method further comprises mapping, by the second base station, at least a portion of PTRS information of the second base station to the second set of the frequency resources, mapping, by the second base station, a zero-power PTRS to the first set of the frequency resources, or leaving, by the second base station, the first set of frequency resources empty, and transmitting, by the second base station, a signal comprising the PTRS information of the second base station according to the frequency resource mapping.