Disclosed is a method of preventing a replay attack during a handoff in a communication system using a Mobile IPv6 protocol. A mobile node creates a CoA (Care of Address) by handoff and sends the CoA to a correspondent node, thereby creating a binding entry. Upon receipt of a binding update message including...http://www.google.de/patents/US7764949?utm_source=gb-gplus-sharePatent US7764949 - Method of preventing replay attack in mobile IPv6
