Analyses Authentication and KeyAgreement (AKA) Protocol for UMTS Mobile Networks

This paper analyses the authentication and key agreement (
AKA
) protocol for UMTS mobile networks, where a new authentication protocol which is able to reduce the network traffic and signaling message between entities, and consequently the bottleneck at authentication centre is avoided, this is achieved by reducing the number of messages between mobile and authentication centre, and then reducing the authentication times and setup time as well as improving authentication efficiency as shown in numerical analysis and simulation results. In this paper we propose dynamic length
(L
) for an array for authentication vector (
AV
). This required designing new technique to predict the numbers of records in
AV
in each authentication data request depending on the to arrival rate of authentication events and residence time of
MS
in
VLR/SGSN
. The proposed
AKA
with dynamic
L
for
AV
is compared with the current
AKA
with fixed length for
AV
.