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Apparatus and method supporting wireless access to multiple security layers in an industrial control and automation system or other system

United States Patent

8,413,227
April 2, 2013
View the Complete Patent at the US Patent & Trademark Office
A method includes receiving a message at a first wireless node. The first wireless node is associated with a first wired network, and the first wired network is associated with a first security layer. The method also includes transmitting the message over the first wired network when at least one destination of the message is located in the first security layer. The method further includes wirelessly transmitting the message for delivery to a second wireless node when at least one destination of the message is located in a second security layer. The second wireless node is associated with a second wired network, and the second wired network is associated with the second security layer. The first and second security layers may be associated with different security paradigms and/or different security domains. Also, the message could be associated with destinations in the first and second security layers.
Chen; Yu-Gene T. (Minden, NV)
Honeywell International Inc. (Morristown, NJ)
12/ 205,156
20090086692
September 5, 2008
GOVERNMENT RIGHTS The U.S. Government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided for by terms from the Department of Energy (DoE).