发明名称 |
Wireless data network security |
摘要 |
Access to a wireless data network to nodes located in a defined operational area is limited by transmitting a network signal within the defined operational area while transmitting a wave that can cause destructive interference with the network signal into a prohibited area adjacent to the defined operational area. The wave that can cause destructive interference is produced by phase and/or amplitude modulating the network signal. The modulation of the network signal includes sweeping the phase and/or amplitude. |
申请公布号 |
US2004009768(A1) |
申请公布日期 |
2004.01.15 |
申请号 |
US20030426031 |
申请日期 |
2003.04.30 |
申请人 |
WATERS JOHN DERYK;MCDONNELL JAMES THOMAS EDWARD;JOHNSON IAN ROBERT;BAYNHAM SIMON HAYDN |
发明人 |
WATERS JOHN DERYK;MCDONNELL JAMES THOMAS EDWARD;JOHNSON IAN ROBERT;BAYNHAM SIMON HAYDN |
分类号 |
H04K3/00;H04L12/28;(IPC1-7):H04Q7/20 |
主分类号 |
H04K3/00 |
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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