Future mobile users will be always best connected anywhere and anytime via diverse access
technologies, Therefore terminal may have several network interfaces and may use simultaneously
several access networks. Many proposed architecture has been propose to seamless different kind of
Network Access Technology such as UMTS to WLAN or UMTS to WiMAX, but still since it has
been proposed there are many issue still occur to seamless mobility between them. So in this paper we
try to propose a new 4G Architecture and Mobility Management based on location cache and handoff
protocol with notification that we called HPWN that can support integrate those three kinds of different
wireless access technology, here we try to focus on UMTS to WLAN and WiMAX.

Future mobile users will be always best connected anywhere and anytime via diverse access
technologies, Therefore terminal may have several network interfaces and may use simultaneously
several access networks. Many proposed architecture has been propose to seamless different kind of
Network Access Technology such as UMTS to WLAN or UMTS to WiMAX, but still since it has
been proposed there are many issue still occur to seamless mobility between them. So in this paper we
try to propose a new 4G Architecture and Mobility Management based on location cache and handoff
protocol with notification that we called HPWN that can support integrate those three kinds of different
wireless access technology, here we try to focus on UMTS to WLAN and WiMAX.

[1] K.E. Aldalaty, \Mobile IP Handover Delay Reduction Using Seamless Handover Architecture,"
Master of Science in Electrical Engineering with emphasis Telecommunications Blekinge In-
stitute of Technology August 2009.
[2] C. Yiping, Y. Yuhang, \A New 4G Architecture Providing Multimode Terminals Always Best
Connected Services," IEEE Wireless Communications Apr. 2007.
[3] D.W. Huang, P. Lin, C.H. Gan, \Design and Performance Study for a Mobility Management
Mechanism (WMM) Using Location Cache for Wireless Mesh Networks,"IEEE Trans. on
Mobile ComputingVol. 7. No. 5. May. 2008.
[4] Part 16, \Air Interface for ‾xed and mobile broadband wireless access system," IEEE
P802.16e/D11 Sept. 2005.
[5] C. Liu, C. Zhou, \An Improved Interworking Architecture For UMTS - WLAN Tight Cou-
pling," IEEE Communication Society WCNC 2005.
[6] O. Andrisano, A. Bazi, M. Diolaiti, C. Gambetti, G. Pasolini \UMTS and WLAN Integration
Architectural Solution and Performance,"IEEE International Symposium on Personal, Indoor
and Mobile Radio Communications2005.
[7] N. Jordan, P. Reichl, \A Fast Handover System Evaluation in an All-IPv6 Mobility Manage-
ment Wireless Broadband Access based Hotspot Network Environment,"IEEE Proc. of the
international Conference on networking2006.
[8] Y.H.Wang, C.P. Hsu, \A Mobile IPV6 based Seamless HandoR Strategy for Integrated UMTS
- WLAN Networks," GESTS International Trans. Computer Science and EngineeringVol.19,
No.1, Oct. 2005.
[9] K.S. Munasinghe, A. Jamalipour, \An Analytical evaluation of mobility management in inte-
grated WLAN-UMTS networks,"School of Electrical and Information Engineering, University
of sidney, 2006.
[10] J.C. Chen, J.H. Yeh, S.H. Hung, F.C. Chen, L.W. Lin and Y.W. Lan, \Recon‾gurable Archi-
tecture and Mobility Management for Next Generation Wireless IP Networks," IEEE Trans.
On Wireless CommunicationsVol. 6 No. 8. August 2007.
17
[11] H. Petander, E. Perera, K.C. Lan, A. Seneviratne,\Measuring and Improving the Performance
of Network Mobility Management in IPv6 Networks," IEEE Journal on Selected Area in
CommunicationsVol.24, N0. 9, Sept. 2006.
[12] M. Abu-Amara, A. Mahmoud, T. Sheltami, A. Al-Shahrani, K. Al-Otaibi, S.M. Rehman, and
T. Anwar, \Performance of UMTS/WLAN Integration at Hot-Spot Locations Using OPNET,"
in Department of Computer Engineering, King Fahd University of Petroleum and Minerals
Dhahran, Saudi Arabia, 31261.
[13] J.G. Atallah, M. Ismail, \Future 4G Front Ends Enabling Smooth Vertical Handovers," IEEE
Circuits and Devices MagazineFeb. 2006.
[14] K.S. Munasinghe, A. Jamalipour, \Interworked WiMAX-3G Cellular Data Networks An Ar-
chitecture for Mobility Management and Performance Evaluation," in IEEE Transactions on
wireless communications, VOL. 8, NO. 4, Apr. 2009.
[15] C. Liu, C. Zhou, \An Improved Interworking Architecture for UMTS WLAN Tight Coupling,"
IEEE Communications Society, WCNC 2005.
[16] A.D. Assouma,R. Beaubrun and S. Pierre, \Mobility Management in Heterogeneous Wireless
Networks," in IEEE Journal on selected areas in communications,, VOL. 24, NO. 3, Mar.
2006.
[17] W. Ma, Y. Fang, and P. Lin, \Mobility Management Strategy Based on User Mobility Patterns
in Wireless Networks," in IEEE Transactions on vehicular technology, VOL. 56, NO. 1, Jan.
2007.
[18] J.C. Chen, J.H. Yeh, S.H. Hung, F.C. Chen, L.W. Lin, and Y.W. Lan, \Recon‾gurable
Architecture and Mobility Management for Next-Generation Wireless IP Networks," IEEE
transactions on wireless communications, VOL. 6, NO. 8, Aug. 2007.
[19] H. Petander, E. Perera, K.C. Lan, and A. Seneviratne, \Measuring and Improving the Perfor-
mance of Network Mobility Management in IPv6 Networks," IEEE Journal on selected areas
in communications, VOL. 24, NO. 9, Sep. 2006.
[20] G. Lampropoulus, A. Kaloxylos, N. Passas, and L. Merakos, \Handover Management Architec-
ture in integrated WLAN/Cellular Networks," IEEE Communications Surveys and Tutorials,
VOL. 7, NO. 4, 2005.
[21] P. Pinto, L. Bernardo, P. Sobral, \Seamless continuity of PS-services in WLAN/3G interwork-
ing," Elsevier Computer Communications Journal, VOL. 29, NO. 8, 15 May 2006.
[22] R. Ferrus, et. al.,\Vertical Handover Support in Coordinated Heterogenous Radio Access
Networks," IST Mobile Summit 2005, Germany, 22 jun.2005.
[23] F. Cacace, L. Vollero, \Managing mobility adaptation in upcoming 802.21 enabled devices,"
Proceedings of the 4th international workshop on wireless mobile applications and services on
WLAN hotspots (WMASH'06), 2006.
18
[24] A. Dutta, S. Das, D. Famolari, Y. Ohba, K. Taniuchi, V. Fajardo, T. Kodama, H. Schulzrinne,
\Secured Seamless Convergence across Heterogenous Access Networks," World Telecommuni-
cation Congress 2006, Budapest, Hungary.
[25] A. Kaloxylos, G. Lampropoulos, N. Passas and L. Merakos, \A Flexible Mechanism for Ser-
vices for Continuity in 4G Environments," Elsevier Computer Communications Journal, Spe-
cial issue on "End to end QOS Provision Advances, VOL. 29, Issue 6, Pages 669-798, 31 Mar.
2006.
[26] G. Lampropoulos, N. Passas, A. Kaloxylos and L. Merakos, \A Flexible UMTS/WLAN Ar-
chitecture for Improved Network Performance," Springer's International Journal on Wireless
Personal Communication Network, Special Issue on Seamless Handover in Nest Generation
Wireless/Mobile Networks,VOL. 43, No. 3, November 2007.
[27] G. Lampropoulos, A. Salkintzis, and N. Passas, \Media Independent Handover for Seamless
Service Provision in Heterogenous Networks," IEEE Communications Magazine, feature topic
on " New Trends Mobile Internet Technologies and Applications", Jan. 2008.
[28] E. Stevens-Navarro, V. Wong, \Comparison between vertical handoR decision algorithms for
heterogeneous wireless networks," Proceedings of IEE Vehicular Technology Conference (VTC-
Spring)",vol. 2, 2006