US Patent No. 10,412,593

METHOD, DEVICE, AND SYSTEM FOR TRANSMITTING SIGNALS IN UNLICENSED BAND


Patent No. 10,412,593
Issue Date September 10, 2019
Title Method, Device, And System For Transmitting Signals In Unlicensed Band
Inventorship Minseok Noh, Seoul (KR)
Jinsam Kwak, Gyeonggi-do (KR)
Juhyung Son, Gyeonggi-do (KR)
Assignee WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., Gyeonggi-Do (KR)

Claim of US Patent No. 10,412,593

1. A method of a user equipment to receive a downlink signal in a cellular communication system, the method comprising:detecting a Channel State Information Reference Signal (CSI-RS) in a time unit #n on an unlicensed band cell;
verifying whether the CSI-RS is used for Discovery RS (DRS) using an initialization value of a CSI-RS sequence of the CSI-RS; and
performing at least one of a Radio Resource Management (RRM) measurement or a Channel State Information (CSI) measurement using the CSI-RS based on whether the CSI-RS is used for the DRS,
wherein when the CSI-RS is used for the DRS, the user equipment performs the RRM measurement using the CSI-RS, and when the CSI-RS is not used for the DRS, the user equipment performs the CSI measurement, wherein the time unit #n is not a subframe #0 or #5, and
wherein when an index of the time unit #n is not used for the initialization value of the CSI-RS sequence, the CSI-RS is used for the DRS, and when the index of the time unit #n is used for the initialization value of the CSI-RS sequence, the CSI-RS is not used for the DRS.