发明名称 |
ABNORMALITY NOTIFICATION SYSTEM OF RADIO NETWORK |
摘要 |
<P>PROBLEM TO BE SOLVED: To report a relay station where abnormality occurs in its early stage in a radio network system using a communication system based upon a specification of IEEE802.15.4. <P>SOLUTION: The radio network system 100 has a transmission source 110 which transmits data, a reception destination 120 which receives the data, and a plurality of relay stations 112 disposed between those transmission source and reception destination. Communication based upon the specification of IEEE802.15.4 is performed between the transmission source and reception destination through at least one of the plurality of relay stations. The relay station through which the communication is performed has an uninterruptible power supply unit. <P>COPYRIGHT: (C)2008,JPO&INPIT |
申请公布号 |
JP2008153798(A) |
申请公布日期 |
2008.07.03 |
申请号 |
JP20060337721 |
申请日期 |
2006.12.15 |
申请人 |
HITACHI PLANT TECHNOLOGIES LTD |
发明人 |
AKI TAKASHI;ITO TSUTOMU;UMEDA TOMOAKI;KIKUCHI TOMOYUKI;IWASAKI YASUHIKO |
分类号 |
H04L12/28;H04B7/15;H04L29/00;H04W24/00;H04W24/04;H04W74/08;H04W84/10;H04W84/12;H04W84/18 |
主分类号 |
H04L12/28 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|