发明名称 |
A SYSTEM FOR SURVEILLANCE AND A METHOD FOR THE APPLICATION THEREOF |
摘要 |
A method and a system ( 100 ) for transmission of a large amount of data over a first dedicated wireless link (A) at a first frequency, such as 2.4 GHz. If the signal strength is weak, the data is further compressed. If the signal strength is further weaker, a second wireless link (B) is used at a second frequency, such as 868 MHZ. The second wireless link (B) is at the same time used as a network system for exchange of information in which the nodes of the system operates as nodes in a multi-hop system. |
申请公布号 |
EP1766594(A2) |
申请公布日期 |
2007.03.28 |
申请号 |
EP20050752630 |
申请日期 |
2005.06.20 |
申请人 |
EMWITECH HOLDING AB |
发明人 |
BROBERG, PATRICK;SVENSSON, MAGNUS;GILDAA, TORBJOERN |
分类号 |
G08B25/01;G08B21/08;G08B25/10;H04L;H04L12/28;H04L12/56;H04W40/22 |
主分类号 |
G08B25/01 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|