Abstract
As defined in the 3rd Generation Partnership Project specifications, a Universal Mobile Telecommunications System (UMTS) user device has to carry out two authentication steps to access multimedia services in IP Multimedia Subsystem (IMS). The first authentication step is used to gain UMTS General Packet Radio Service (GPRS) network admission. The second authentication step is the IMS authentication. The authentication steps utilize Authentication and Key Agreement (AKA) and many of the authentication steps are similar. This paper proposed a simplified authentication process known as Improved AKA (I-AKA) which reduced the two authentication steps used to access the UMTS GPRS network and IMS services to one authentication step. Simulation results showed the I-AKA protocol could significantly reduce the authentication delay and improve overall efficiency.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
