公开(公告)号：US10270526B2

公开(公告)日：2019-04-23

申请号：US15805236

申请日：2017-11-07

Applicant: Electronics and Telecommunications Research Institute

Inventor： Byung-Hee Son ,  Geun Yong Kim ,  Jae In Kim ,  Hee Do Kim ,  Moon Kyun Oh ,  Hark Yoo ,  Dongsoo Lee

IPC: H04B10/071 ,  H04B10/079 ,  H04B10/27 ,  H04B10/077

Abstract: A terminal status monitoring apparatus connected to a terminal at an optical subscriber side in an optical network is provided. A signal transferring unit transfers a downlink optical signal to the terminal and receives, as a reflected optical signal, the downlink optical signal which is reflected at the terminal. A signal receiving unit measures an intensity of the reflected optical signal. A signal processing unit determines a connection status of a terminal device at the terminal by comparing an intensity of the downlink optical signal with the intensity of the reflected optical signal. A signal output unit outputs the connection status.