Patent ID: 7630406

Claim:
A method comprising: operating a first communication node in a hold-message mode; receiving a beacon at the first communication node from a second communication node, the beacon indicative of the second communication node buffering one or more messages for the first communication node; exiting the hold-message mode; retrieving buffered messages from the second communication node after said exiting, said retrieving including transmitting a poll request from the first communication node to the second communication node to indicate said exiting of the hold-message mode, and receiving the one or more messages from the second communication node; transmitting a resynchronization request from the first communication node to the second communication node, the resynchronization request having a first sequence value of a frame type or a subframe type associated with the resynchronization request; receiving a resynchronization response at the first communication node from the second communication node, the resynchronization response having a second sequence value of a frame type or a subframe type associated with the resynchronization response; comparing the first sequence value to the second sequence value; and identifying a delay attack associated with said retrieving of the buffered messages based at least in part on said comparing.