A Novel WLAN Roaming Decision and Selection Scheme for Mobile Data Offloading

The existing IEEE and 3GPP standards have laid the foundation for integrating cellular and WiFi network to deliver a seamless experience for the end-users when roaming across multiple access networks. However, in recent studies, the issue of making roaming decision and intelligently selecting the most preferable Point of Service to optimize network resource and improve end user's experience has not been considered properly. In this paper, we propose a novel cellular and WiFi roaming decision and AP selection scheme based on state of the art, 3GPP TS24.312 and IEEE 802.11u, k standards. Our proposed scheme assists the mobile nodes to decide the right timing to make roaming decision and select preferable point of service based on the operator's policies and real-time network condition. We also introduce our simulation model of a heterogeneous network with cellular and WiFi interworking as well as 3GPP ANDSF, TS24.312. It is a complete end-to-end system model from application to physical layer with considering user's mobility and realistic traffic model. The proposed scheme outperformed the conventional WiFi selection scheme in terms of dynamically steering mobile node's data traffic from macrocell to available Access Points. The proposed scheme increased the utilization and balanced the traffic load of access points and improved user's experienced throughput.

[1]  Luís Filipe Calado Carvalho de Figueiredo,et al.  Wireless Networks Interoperability - Wifi Wimax Handover , 2009, 2009 Fourth International Conference on Systems and Networks Communications.

[2]  Qian Zhang,et al.  A seamless and proactive end-to-end mobility solution for roaming across heterogeneous wireless networks , 2004, IEEE Journal on Selected Areas in Communications.

[3]  Shie-Yuan Wang,et al.  NCTUns 6.0: A Simulator for Advanced Wireless Vehicular Network Research , 2010, 2010 IEEE 71st Vehicular Technology Conference.

[4]  Omar Alani,et al.  A Survey on Media Independent Handover (MIH) and IP Multimedia Subsystem (IMS) in Heterogeneous Wireless Networks , 2013, Int. J. Wirel. Inf. Networks.

[5]  S. Y. Wang,et al.  The design and implementation of the NCTUns network simulation engine , 2007, Simul. Model. Pract. Theory.

[6]  Djamal Zeghlache,et al.  A review on mobility management and vertical handover solutions over heterogeneous wireless networks , 2012, Comput. Commun..

[7]  Myung-Ki Shin,et al.  Mobility management for all-IP mobile networks: mobile IPv6 vs. proxy mobile IPv6 , 2008, IEEE Wireless Communications.

[8]  Shie-Yuan Wang,et al.  Design and implementation of a more realistic radio propagation model for wireless Vehicular Networks over the NCTUns network simulator , 2011, 2011 IEEE Wireless Communications and Networking Conference.

[9]  Jon Crowcroft,et al.  Performance issues with vertical handovers - experiences from GPRS cellular and WLAN hot-spots integration , 2004, Second IEEE Annual Conference on Pervasive Computing and Communications, 2004. Proceedings of the.

[10]  Rüdiger Kapitza,et al.  Study on performance-centric offload strategies for LTE networks , 2013, 6th Joint IFIP Wireless and Mobile Networking Conference (WMNC).

[11]  Dharma P. Agrawal,et al.  Issues in integrating cellular networks WLANs, AND MANETs: a futuristic heterogeneous wireless network , 2005, IEEE Wireless Communications.

[12]  Jiyi Wu,et al.  A Novel AHP and GRA Based Handover Decision Mechanism in Heterogeneous Wireless Networks , 2010, ICICA.

[13]  Bayan S. Sharif,et al.  Interference minimization in hybrid WiFi/cellular networks , 2014, 2014 IEEE 19th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD).

[14]  Ramjee Prasad,et al.  Optimization of Mobile IPv6-Based Handovers to Support VoIP Services in Wireless Heterogeneous Networks , 2007, IEEE Transactions on Vehicular Technology.

[15]  Guy Pujolle,et al.  An overview of vertical handover decision strategies in heterogeneous wireless networks , 2008, Comput. Commun..

[16]  Dirk Pesch,et al.  Intelligent access and mobility management in heterogeneous wireless networks using policy , 2003, ISICT.

[17]  Dan Keun Sung,et al.  A Network-Assisted User-Centric WiFi-Offloading Model for Maximizing Per-User Throughput in a Heterogeneous Network , 2014, IEEE Transactions on Vehicular Technology.