Fault tolerance in wireless networks

Multiplex communications – Communication over free space

Reexamination Certificate

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Reexamination Certificate

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07848268

ABSTRACT:
A network includes a plurality of logical access entities. Each access entity includes one or more communication interfaces. The network further includes a plurality of logical node entities. Each logical node entity includes one or more communication interfaces that are configured to wirelessly communicate in a redundant manner with any of the logical access entities. In an embodiment, a communication degradation in the network is assessed, and the network is configured as a function of that assessment to provide fault tolerance within the network.

REFERENCES:
patent: 2008/0008088 (2008-01-01), Nagarajan et al.
“Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications”, ANSI/IEEE Std 802.11, 1999 Edition (R2003), (1999),1-528.
“Putting the air space to work : Real-world benefits of enterprise-wide RF intelligence”,Alcatel White Paper, (Mar. 2004),1-11.
Gandhi, R. , “Tolerance to access-point failures in dependable wireless local-area networks”,Ninth IEEE International Workshop on Object-Oriented Real-Time Dependable Systems, 2003. Proceedings., (2003),136-143.
Su, W. W., et al., “An adaptive and fault-tolerant gateway assignment in sensor networks”,2004 IEEE International Conference on Mobile Ad-hoc and Sensor Systems, (2004),576-578.
Virendra, M. , et al., “SAWAN: a survivable architecture for wireless LANs”,Proceedings. Third IEEE International Workshop on Information Assurance, (2005),71-82.

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