发明名称 |
WIRELESS COMMUNICATION NETWORK SYSTEM SYNCHRONIZATION METHOD |
摘要 |
<p>Mobile radio sets are installed on front and rear parts of a mobile body, one of fixed radio sets is set as a synchronization base station, and the other radio sets including the mobile radio sets are set as synchronization packet relay stations. Each of the relay stations in a synchronization acquiring mode makes a transition to a ground synchronization maintaining mode higher in synchronization accuracy when receiving a synchronization packet without the intervention of the mobile radio sets, or makes a transition to an on-vehicle synchronization maintaining mode lower in synchronization accuracy when receiving a synchronization packet with the intervention of the mobile radio sets, and the relay station in the on-vehicle synchronization maintaining mode makes a transition to the ground synchronization maintaining mode when receiving a synchronization packet from a relay station in the ground synchronization maintaining mode.</p> |
申请公布号 |
EP2763474(A1) |
申请公布日期 |
2014.08.06 |
申请号 |
EP20120836999 |
申请日期 |
2012.09.24 |
申请人 |
THE NIPPON SIGNAL CO., LTD. |
发明人 |
YAMAGUCHI, TERUFUMI;SAITO, HIROKI;OTSUKA, YUHEI;SHIRAI, TOSHIHITO |
分类号 |
H04W56/00;B61L15/00 |
主分类号 |
H04W56/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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