Traf fi c Of fl oad Enhancements for eUTRAN

Local IP Access (LIPA) and Selected IP Traffic Offload (SIPTO) are two topics currently of high interest to mobile network operators. They enable data traffic offload at appropriate points in the Radio Access Network in a highly cost-efficient manner. These technologies also have the potential to greatly increase system scalability and offer operators the flexibility to cope with the growing community of smart phone users and the associated increase of mobile data traffic. This paper first introduces the main concepts behind LIPA/SIPTO and discusses the main requirements to support them. Different architecture solutions, proposed for home, enterprise and macrocellular networks, are presented. The paper also elaborates on LIPA/SIPTO traffic handling. A DNS-based approach, offering operators a fine-grained control of LIPA/SIPTO traffic handling, is introduced. The paper then discusses different other issues pertaining to LIPA/SIPTO traffic management, SIPTO QoS support, data offload gateway selection, and service planning and deployment. Finally, the paper concentrates on recent efforts towards the support of LIPA/SIPTO service continuity.

[1]  H. Anthony Chan,et al.  Distributed and Dynamic Mobility Management in Mobile Internet: Current Approaches and Issues , 2011, J. Commun..

[2]  Tarik Taleb,et al.  DNS-Based Solution for Operator Control of Selected IP Traffic Offload , 2011, 2011 IEEE International Conference on Communications (ICC).

[3]  Huarui Liang,et al.  How to support local IP access from the femto cell , 2009, 2009 IEEE International Conference on Communications Technology and Applications.

[4]  Ronny Yongho Kim,et al.  WiMAX femtocell: requirements, challenges, and solutions , 2009, IEEE Communications Magazine.

[5]  Holger Claussen,et al.  On femto deployment architectures and macrocell offloading benefits in joint macro-femto deployments , 2010, IEEE Communications Magazine.

[6]  Hidetoshi Yokota,et al.  Use case scenarios for Distributed Mobility Management , 2010 .

[7]  Charalabos Skianis,et al.  Optimized fusion of heterogeneous wireless networks based on media-independent handover operations [Accepted from Open Call] , 2010, IEEE Wireless Communications.

[8]  Flavio Bonomi.  The future mobile infrastructure: challenges and opportunities [Industry Perspectives] , 2010 .

[9]  Jaehoon Roh,et al.  Femtocell Traffic Offload Scheme for Core Networks , 2011, 2011 4th IFIP International Conference on New Technologies, Mobility and Security.

[10]  Yi-Bing Lin,et al.  Reducing Call Routing Cost for Femtocells , 2010, IEEE Transactions on Wireless Communications.

[11]  Tarik Taleb,et al.  Geographical Location and Load Based Gateway Selection for Optimal Traffic Offload in Mobile Networks , 2011, Networking.

[12]  Simone Redana,et al.  Dynamic Relaying in 3GPP LTE-Advanced Networks , 2009, EURASIP J. Wirel. Commun. Netw..

[13]  Holger Claussen,et al.  Effects of joint macrocell and residential picocell deployment on the network energy efficiency , 2008, 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications.

[14]  Heechang Kim,et al.  WiMAX femtocells: a perspective on network architecture, capacity, and coverage , 2008, IEEE Communications Magazine.

[15]  László Bokor,et al.  Flat Architectures: Towards Scalable Future Internet Mobility , 2011, Future Internet Assembly.

[16]  Tarik Taleb,et al.  Self Organized Network Management Functions for Energy Efficient Cellular Urban Infrastructures , 2012, Mob. Networks Appl..

[17]  George Pavlou,et al.  Scalable monitoring support for resource management and service assurance , 2004, IEEE Network.

[18]  Andreas Mäder,et al.  Localization of Data and Control Plane Traffic in Enterprise Femtocell Networks , 2011, 2011 IEEE 73rd Vehicular Technology Conference (VTC Spring).