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Daesung Choi, Sungdae Hong, Hyoung-Kee Choi.  2014.  A group-based security protocol for Machine Type Communications in LTE-Advanced. Computer Communications Workshops (INFOCOM WKSHPS), 2014 IEEE Conference on. :161-162.

We propose Authentication and Key Agreement (AKA) for Machine Type Communications (MTC) in LTE-Advanced. This protocol is based on an idea of grouping devices so that it would reduce signaling congestion in the access network and overload on the single authentication server. We verified that this protocol is designed to be secure against many attacks by using a software verification tool. Furthermore, performance evaluation suggests that this protocol is efficient with respect to authentication overhead and handover delay.