/ftp.3gpp.org/specs/). [20] Jae Hyung Joo, Jeong-Jun Suh, Young Yong Kim, "Secure Remote USIM (Universal Subscriber Identity Module) Card Application Management Protocol for W-CDMA Networks", International Conference on Consumer Electronics 2006. ICCE '06, January 2006. [21] UICC (Universal Integrated Circuit Card). <http://en.wikipedia.org/wiki/UICC>. 3GPP2 CS0023-C v2.0, Removable User Identity Module for Spread Spectrum Systems (RUIM), October 2008. <http://www.3gpp2.org/Public_html/Specs/> [23] ITU-T X.509, Information technology - Open Systems Interconnection - The Directory: Public-key and attribute certificate frameworks, November 2008. <http://www.itu.int/rec/T-REC-X.509/en>. [24] Mobile IP <http://en.wikipedia.org/wiki/Mobile_ip> "Cisco Home Agent Redundancy and Load Balancing", White Paper, Cisco Systems, 2009. <http://www. cisco.com/en/US/prod/collateral/wireless/wirelssw/ps5940/prod_white_paper0900aecd802921f0.html>. [26] IETF RFC 4023, in: T. Worster, Y. Rekhter, E. Rosen (Eds.), Encapsulating MPLS in IP or Generic Routing Encapsulation (GRE), March 2005. [27] IETF RFC 4332, K. Leung, A. Patel, Cisco' S Mobile IPv4 Host Configuration Extensions, December 2005. [28] IETF RFC 5213, Gundavelli, Ed., K. Leung, V. Devarapalli, K. Chowdhury, B. Patil, S. Proxy Mobile IPv6, August 2008. [29] IP subnet <http://en.wikipedia.org/wiki/Subnetwork> [30] IETF RFC 2131, R. Droms, Dynamic Host Configuration Protocol, March 1997. [31] 3GPP TS 36.300, Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2, March 2010. (ftp://ftp.3gpp. org/specs/). [32] 3GPP TR 23.882, 3GPP System Architecture Evolution: Report on Technical Options and Conclusions, September 2008. (ftp://ftp.3gpp.org/specs/). 3GPP TS 23.402, Architecture Enhancements for Non-3GPP Accesses, March 2009. (ftp://ftt.3gpp.org/ specs/). CHAPTER IEEE 802.16m Reference Model and Protocol Structure INTRODUCTION The IEEE 302.16-2009 standard defines a generic reference mo