Detecting legacy spoofing in reduced functionality user...

Details Detecting legacy spoofing in reduced functionality user... Detecting legacy spoofing in reduced functionality user...

H - Electricity

04

W

H04W 8/22 (2009.01) H04W 24/00 (2009.01) H04W 52/02 (2009.01)

Patent

CA 2720318

Backward compatibility may require the use of fields or other indicators that are interpreted by new nodes or stations in a system in a manner different from the way legacy nodes interpret those same fields. In some circumstances, these indicators may be used to 'spoof' legacy nodes to behave in certain ways, to allow a next generation protocol to be performed without interference from those legacy nodes. While this practice is may increase communication effectiveness, spoofing may lead to inefficient operation of legacy nodes. Legacy nodes may detect spoofing, including detecting field settings in a legacy portion of a transmitted message, or detecting phase shifts in a message. Once spoofing is detected, a variety of steps may be taken, including determining the duration of the next generation message, entering a low power state for the duration, communicating on alternate channels for the duration, modifying legacy backoff procedures, and others.

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