METAL LINE ACCESS DEVICE FOR SMALL RADIO BASE STATION WHICH HAS UNIVERSAL TIME COORDINATED (UTC) SYNCHRONOUS SIGNAL TRANSFER FUNCTION

摘要

PROBLEM TO BE SOLVED: To provide a time information transmission device which can transmit time information of a nanosecond order time precision via a metal wire.;SOLUTION: In an access device for a small-type radio base station with a universal time coordinated (UTC) synchronous signal transfer function which has a GPS (global positioning system) receiving device 3, a line concentration device 4, and a CPE (customer premises equipment); adjustment for delays and jitters are made possible, by installing a function measuring the delay time and the jitters of a time synchronous signal caused by metal line transmission, and a function compensating the delay amount, according to the measured result between the GPS receiving device and the line concentration device, and the line concentration device and the CPE.;COPYRIGHT: (C)2011,JPO&INPIT