| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a mobile communication system capable of acquiring the GPS time of error accuracy required in intra-station synchronization in a base station. <P>SOLUTION: In the mobile communication system, a master time server 1 for acquiring the GPS time from a GPS satellite 2 and generating a reference clock and a slave time server 4 connected with the master time server 1 by an exclusive line such as an optical fiber are prepared, and the slave time server 4 is provided together in an RNC 3. The slave time server 4 sends out time information to the plurality of base stations 6-1 to 6-4 subordinate to the RNC 3 without depending on the processing delay of the RNC 3, measures the delay time of the route of the respective base stations 6-1 to 6-4 and the RNC 3 and corrects the time on the basis of the measured result. <P>COPYRIGHT: (C)2008,JPO&INPIT |
