公开(公告)号：US20190203968A1

公开(公告)日：2019-07-04

申请号：US16233480

申请日：2018-12-27

Applicant: LG ELECTRONICS INC.

Inventor： Hakrae LEE ,  Hanbae JEON ,  Jinho KIM ,  Sunyoung PARK ,  Chulmin PARK ,  Seontae YOON ,  Kyungdo LEE ,  Kwonhyung LEE

IPC: F24F11/58 ,  F24F11/84 ,  F24F11/54 ,  F24F11/74 ,  F24F1/20

CPC classification number: F24F11/58 ,  F24F11/54 ,  H04L12/2838

Abstract: Disclosed is an air conditioner system comprising at least one outdoor unit and a plurality of indoor units. The plurality of units may be grouped into one or more groups. A wireless communication module may be provided at each of the plurality of units and configured to perform wireless communication using a Sub-GHz frequency band. The wireless communication module may include an encoder configured to encode a predetermined signal, a modulator configured to modulate the encoded signal according to Orthogonal Frequency Division Multiplexing (OFDM) using multiple subcarriers, at least one antenna having an antenna pattern formed on a Printed Circuit Board (PCB), and configured to output a signal based on the modulated signal, a demodulator configured to demodulate a signal received at the at least one antenna, according to the OFDM, and a decoder configured to decode the demodulated signal. Accordingly, a high-quality wireless communication environment may be implemented.