Patent ID: 8069216
Filing Date: 2011-11-29
Classification: H04L,H04W

Abstract:
1. A method for a first node to alert other nodes of a malicious node in a communication system, the method comprising: receiving, by the first node, a message indicating that a second node is the malicious node; determining, by the first node, a quantity of nodes identifying the second node as the malicious node; comparing, by the first node, the quantity of nodes identifying the second node as malicious to a predetermined quorum threshold; identifying, by the first node, the second node as malicious when the quantity of nodes identifying the second node as malicious is greater than the predetermined quorum threshold; re-transmitting, by the first node, the message to other nodes within a predetermined hop-count from the first node indicating that the second node is the malicious node; moving, by the first node, to a new location; and transmitting, by the first node, a mobile alert message upon moving to a new location, with a signature of the first node appended to it, to immediate neighboring nodes indicating that the first node has determined that the quantity of nodes identifying the second node as malicious is greater than the predetermined quorum threshold.