ABSTRACT
Mobility support is critical to offering seamless data service to mobile devices in 3G/4G cellular networks. To accommodate policy requests by users and carriers, micro-mobility management scheme among cells (i.e., handoff) is designated to be configurable. Each cell and mobile device can configure or even customize its own handoff procedure. In this paper, we examine the handoff misconfiguration issues in 3G/4G networks. We show that they may incur handoff instability in the form of persistent loops, where the device oscillates between cells even without radio-link and location changes. Such instability is mainly triggered by uncoordinated parameter configurations and inconsistent decision logic in the hand- off procedure. It can degrade user data performance, incur excessive signaling overhead, and violate network's expected handoff goals. We derive the instability conditions, and validate them on two major US mobile carrier networks. We further design a soft- ware tool for automatic loop detection, and run it over operational networks. We discuss possible fixes to such uncoordinated configurations among devices and cells.
- Mobileinsight project. http://metro.cs.ucla.edu/mobile_insight.Google Scholar
- "ZTE UMTS Handover Description". http://www.slideshare.net/quyetnguyenhong/zte-umtshandoverdescription.Google Scholar
- 3GPP. TS25.331: Radio Resource Control (RRC), 2006.Google Scholar
- 3GPP. TS24.008: Mobile Radio Interface Layer 3, 2012.Google Scholar
- 3GPP. TS25.304: User Equipment (UE) Procedures in Idle Mode and Procedures for Cell Reselection in Connected Mode, 2012.Google Scholar
- 3GPP. TS36.331: E-UTRA; Radio Resource Control (RRC), 2012.Google Scholar
- 3GPP. TS32.522: Self-Organizing Networks (SON) Policy Network Resource Model (NRM) Integration Reference Point (IRP), 2013.Google Scholar
- 3GPP. TS32.511: Telecommunication Management; Automatic Neighbor Relation management; Concepts and Requirements, 2014.Google Scholar
- 3GPP. TS36.413: S1 Application Protocol (S1AP), 2014.Google Scholar
- 3GPP. TS36.304: E-UTRA; User Equipment Procedures in Idle Mode, 2015.Google Scholar
- P. K. Athivarapu, R. Bhagwan, S. Guha, V. Navda, and et.al. Radiojockey: mining program execution to optimize cellular radio usage. In ACM MobiCom, Aug. 2012. Google ScholarDigital Library
- A. Balasubramanian, R. Mahajan, and A. Venkataramani. Augmenting mobile 3g using wifi. In ACM MobiSys, June 2010. Google ScholarDigital Library
- N. Balasubramanian, A. Balasubramanian, and A. Venkataramani. Energy consumption in mobile phones: A measurement study and implications for network applications. In IMC, 2009. Google ScholarDigital Library
- C. Brunner, A. Garavaglia, M. Mittal, M. Narang, and J. V. Bautista. Inter-system Handover Parameter Optimization. In VTC Fall, 2006.Google ScholarCross Ref
- M. Z. Chowdhury, W. Ryu, E. Rhee, and Y. M. Jang. Handover between Macrocell and Femtocell for UMTS Based Networks. In IEEE ICACT, 2009. Google ScholarDigital Library
- W. Dong, S. Rallapalli, R. Jana, L. Qiu, K. Ramakrishnan, L. Razoumov, Y. Zhang, and T. W. Cho. ideal: Incentivized dynamic cellular offloading via auctions. TON, 22(4):1271--1284, 2014. Google ScholarDigital Library
- A. Gudipati, D. Perry, L. E. Li, and S. Katti. Softran: Software defined radio access network. In Proceedings of the second ACM SIGCOMM workshop on Hot topics in software defined networking, pages 25--30. ACM, 2013. Google ScholarDigital Library
- J. Huang, F. Qian, Y. Guo, Y. Zhou, Q. Xu, Z. M. Mao, S. Sen, and O. Spatscheck. An in-depth study of LTE: Effect of network protocol and application behavior on performance. In SIGCOMM, 2013. Google ScholarDigital Library
- U. Javed, D. Han, R. Caceres, J. Pang, S. Seshan, and A. Varshavsky. Predicting handoffs in 3g networks. In MobiHeld, 2011. Google ScholarDigital Library
- X. Jin, L. E. Li, L. Vanbever, and J. Rexford. Softcell: scalable and flexible cellular core network architecture. In CoNEXT, 2013. Google ScholarDigital Library
- S. Kumar, E. Hamed, D. Katabi, and L. Erran Li. LTE Radio Analytics Made Easy and Accessible. In ACM SIGCOMM, 2014. Google ScholarDigital Library
- Y. Li, J. Xu, C. Peng, and S. Lu. A First Look at Unstable Mobility Management in Cellular Networks. In HotMobile, Feb 2016. Google ScholarDigital Library
- M. Liu, Z. Li, X. Guo, and E. Dutkiewicz. Performance Analysis and Optimization of Handoff Algorithms in Heterogeneous Wireless Networks. IEEE Transactions on Mobile Computing, 7(7):846--857, July 2008. Google ScholarDigital Library
- A. Lobinger, S. Stefanski, T. Jansen, and I. Balan. Coordinating Handover Parameter Optimization and Load Balancing in LTE Self-Optimizing Networks. In VTC Spring. IEEE, 2011.Google Scholar
- R. Mahajan, D. Wetherall, and T. Anderson. Understanding BGP Misconfiguration. In ACM SIGCOMM CCR, 2002. Google ScholarDigital Library
- V. Pappas, Z. Xu, S. Lu, D. Massey, A. Terzis, and L. Zhang. Impact of Configuration Errors on DNS Robustness. In SIGCOMM, 2004. Google ScholarDigital Library
- G. P. Pollini. Trends in Handover Design. IEEE Communications Magazine, 34(3):82--90, 1996. Google ScholarDigital Library
- P. Sun, R. Mahajan, J. Rexford, L. Yuan, M. Zhang, and A. Arefin. A Network-State Management Service. In ACM SIGCOMM, 2014. Google ScholarDigital Library
- F. P. Tso, J. Teng, W. Jia, and D. Xuan. Mobility: A Double-Edged Sword for HSPA Networks: A Large-Scale Test on Hong Kong Mobile HSPA Networks. IEEE Transactions on Parallel and Distributed Systems, 23(10):1895--1907, 2012. Google ScholarDigital Library
- Wikipedia. Handover. http://en.wikipedia.org/wiki/Handover.Google Scholar
- D. Wong and T. J. Lim. Soft handoffs in CDMA Mobile Systems. IEEE Personal Communications, 4(6):6--17, 1997.Google ScholarCross Ref
Index Terms
- Instability in Distributed Mobility Management: Revisiting Configuration Management in 3G/4G Mobile Networks
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