II. EVOLVED PACKET SYSTEM (EPS)
EPS is an evolution of UMTS system in order to satisfy a
huge demand of high-speed data rates and provide support
for a constantly increased number of cellular users. In
contrast with previous generations, LTE has been designed
considering all the services as IP data traffic, voice calls
included, facilitating integration of user data traffic into
operator core network but fostering new well-known attacks
for IP networks.
3GPP has developed a robust system, adapted to provide
services with high requirements of data bandwidth and able
to cope the growth of mobile-phone users. Their effort is also
focused on security issues to consider the previous UMTS