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Issue No.03 - March (2013 vol.12)
pp: 447-460
Tariq M. D. Ali , Dept. of Electr. Eng., Univ. of Texas at Dallas, Richardson, TX, USA
M. Saquib , Dept. of Electr. Eng., Univ. of Texas at Dallas, Richardson, TX, USA
The development of handheld mobile terminals (MT) capable of operating over both Wireless Local Area Networks (WLAN) and the cellular media is an important step toward the evolution of next-generation integrated networks. For real-time applications like voice, efficient vertical handover (VH) algorithms are required in maintaining a seamless connectivity and an acceptable level of quality for mobile users in heterogeneous environments. This paper proposes an analytical method for evaluating the performance of a VH algorithm that relies on the Received Signal Strength Indicator (RSSI) samples. The system model is portrayed upon addressing relevant factors that affect the quality and continuity of a voice call, and a set of performance metrics is proposed. A rigorous signal strength time series is utilized in characterizing the instantaneous decision metrics, and a novel intermediary system model, namely the N-model, is proposed to capture the large-scale shadowing effects. The performance of a generic algorithm that relies on the RSSI, which itself is susceptible to estimation error, is evaluated for an MT roaming in and out of the WLAN coverage area. Results obtained using the analytical expressions are validated by comparing them to that obtained through Monte Carlo simulation.
wireless LAN, cellular radio, estimation theory, genetic algorithms, mobility management (mobile radio), next generation networks, voice communication, WLAN coverage area, WLAN-cellular voice handover evaluation, handheld mobile terminal, wireless local area network, cellular media, next-generation integrated network, vertical handover, VH algorithm, seamless connectivity, mobile user, heterogeneous environment, received signal strength indicator, RSSI, voice call quality, voice call continuity, instantaneous decision metrics, intermediary system model, N-model, large-scale shadowing effect, generic algorithm, estimation error, MT roaming, Wireless LAN, Measurement, Algorithm design and analysis, Trajectory, Shadow mapping, Analytical models, Fading, vertical handover, WLAN/cellular, heterogeneous network
Tariq M. D. Ali, M. Saquib, "Analytical Framework for WLAN-Cellular Voice Handover Evaluation", IEEE Transactions on Mobile Computing, vol.12, no. 3, pp. 447-460, March 2013, doi:10.1109/TMC.2011.276
[1] D. Niyato and E. Hossain, "Dynamics of Network Selection in Heterogeneous Wireless Networks: An Evolutionary Game Approach," IEEE Trans. Vehicular Technology, vol. 58, no. 4, pp. 2008-2017, May 2009.
[2] H. Chan, P. Fan, and Z. Cao, "A Utility-Based Network Selection Scheme for Multiple Services in Heterogeneous Networks," Proc. IEEE Int'l Conf. Wireless Networks, Comm. and Mobile Computing (IWCMC), vol. 2, pp. 1175-1180, June 2005.
[3] M. Lott, M. Siebert, S. Bonjour, D. von Hugo, and M. Weckerle, "Interworking of WLAN and 3G Systems," IEE Proc. Comm., vol. 151, no. 5, pp. 507-513, Oct. 2004.
[4] R. Chakravorty, P. Vidales, K. Subramanian, I. Pratt, and J. Crowcroft, "Performance Issues with Vertical Handovers - Experiences from GPRS Cellular and WLAN Hot-Spots Integration," Proc. Second IEEE Ann. Conf. Pervasive Computing and Comm., pp. 155-164, Mar. 2004.
[5] F. Zhu and J. McNair, "Optimizations for Vertical Handoff Decision Algorithms," Proc. IEEE Wireless Comm. and Networking Conf., 2004.
[6] H.J. Wang, R.H. Katz, and J. Giese, "Policy-Enabled Handoffs Across Heterogeneous Wireless Networks," Proc. IEEE Workshop Mobile Computing Systems and Applications, 1999.
[7] A.H. Zahran and B. Liang, "Performance Evaluation Framework for Vertical Handoff Algorithms in Heterogeneous Networks," Proc. IEEE Int'l Conf. Comm., 2005.
[8] M. Ylianttila, M. Pande, J. Makela, and P. Mahonen, "Optimization Scheme for Mobile Users Performing Vertical Handoffs between IEEE 802.11 and GPRS/EDGE Networks," Proc. IEEE GlobeCom, Nov. 2001.
[9] S. Xie and M. Wu, "Vertical Handoff Algorithm in Heterogeneous Networks for Reducing Interference," J. Electronics, vol. 26, no. 1, pp. 71-79, Jan. 2009.
[10] T.M. Ali, M. Saquib, and C. Sengupta, "Performance Analysis Framework and Vertical Handover Triggering Algorithms for Voice over WLAN/Cellular Network," Proc. IEEE Wireless Comm. and Networking Conf., Apr. 2008.
[11] H. Bing, C. He, and L. Jiang, "Performance Analysis of Vertical Handover in a UMTS-WLAN Integrated Network," Proc. 14th IEEE Int'l Symp. Personal, Indoor and Mobile Radio Comm., Sept. 2003.
[12] E. Stevens-Navarro, Y. Lin, and V.W.S. Wong, "An MDP Based Vertical Handoff Decision Algorithm for Heterogeneous Wireless Networks," IEEE Trans. Vehicular Technology, vol. 57, no. 2, pp. 1243-1254, Mar. 2008.
[13] S. Mohanty and I.F. Akyildiz, "A Cross-Layer (Layer 2 + 3) Handoff Management Protocol for Next-Generation Wireless Systems," IEEE Trans. Mobile Computing, vol. 5, no. 10, pp. 1347-1360, Oct. 2006.
[14] B. Chang and J. Chen, "Cross-Layer-Based Adaptive Vertical Handoff with Predictive RSS in Heterogeneous Wireless Networks," IEEE Trans. Vehicular Technology, vol. 57, no. 6, pp. 3679-3692, Nov. 2008.
[15] J. Broch, D.A. Maltz, D.B. Johnson, Y.C. Hu, and J. Jetcheva, "A Performance Comparison of Multi-Hop Wireless Ad Hoc Network Routing Protocols," Proc. ACM MobiCom, 1998.
[16] W. Song, H. Jiang, and W. Zhuang, "Performance Analysis of the WLAN-First Scheme in Cellular/WLAN Interworking," IEEE Trans. Wireless Comm., vol. 6, no. 5, pp. 1932-1952, May 2007.
[17] W. Song, Y. Cheng, and W. Zhuang, "Improving Voice and Data Services in Cellular/WLAN Integrated Networks by Admission Control," IEEE Trans. Wireless Comm., vol. 6, no. 11, pp. 4025-4037, Nov. 2007.
[18] T.S. Rappaport, Wireless Communications: Principles and Practice. Prentice Hall, 2002.
[19] D. Wong and D. Cox, "Estimating Local Mean Signal Power Level in a Rayleigh Fading Environment," IEEE Trans. Vehicular Technology, vol. 48, no. 3, pp. 956-959, May 1999.
[20] O. Awoniyi and F.A. Tobagi, "Effect of Fading on the Performance of VoIP in IEEE 802.11 WLANs," Proc. IEEE Int'l Conf. Comm., June 2004.
[21] P. Fuxjager and F. Ricciato, "Collecting Broken Frames: Error Statistics in IEEE 802.11b/g Links," Proc. Sixth Int'l Symp. Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks and Workshops, pp. 30-35, Apr. 2008.
[22] J.G. Proakis, Digital Communications. McGraw-Hill, 2001.
[23] M. Gast, 802.11 Wireless Networks: The Definitive Guide. O'Reilly Media, 2005.
[24] G.P. Pollini, "Trends in Handover Design," IEEE Comm. Mag., vol. 34, no. 3, pp. 82-90, Mar. 1996.
[25] C.W. Lee, L.M. Chen, M.C. Chen, and S.S. Yeali, "A Framework of Handoffs in Wireless Overlay Networks Based on Mobile IPv6," IEEE J. Selected Areas Comm., vol. 23, no. 11, pp. 2118-2128, Nov. 2005.
[26] K. Pahlavan, P. Krishnamurthy, A. Hatami, M. Ylianttila, J.P. Makela, R. Pichna, and J. Vallstron, "Handoff in Hybrid Mobile Data Networks," IEEE Personal Comm., vol. 7, no. 2, pp. 34-47, Apr. 2000.
[27] R. Ben Ali and S. Pierre, "Optimal Voice Admission Control Performance under Soft Vertical Handoff in Loosely Coupled 3G/WLAN Networks," Proc. IEEE Wireless Comm. and Networking Conf., pp. 2980-2985, Mar./Apr. 2008.
[28] L. Hua, M.H. Kabir, and T. Sato, "Velocity Adaptive Vertical Handoff on Multi-Frequency System," Proc. 20th IEEE Int'l Symp. Personal, Indoor and Mobile Radio Comm., 2009.
[29] P. Marichamy, S. Chakrabarti, and S.L. Maskara, "Performance Evaluation of Handoff Detection Schemes," Proc. IEEE Conf. Convergent Technologies Asia-Pacific, pp. 643-646, Oct. 2003.
[30] J. Salo, H.M. El-Sallabi, and P. Vainikainen, "The Distribution of the Product of Independent Rayleigh Random Variables," IEEE Trans. Antennas and Propagation, vol. 54, no. 2, pp. 639-643, Feb. 2006.
[31] B. Rivet, L. Girin, and C. Jutten, "Log-Rayleigh Distribution: A Simple and Efficient Statistical Representation of Log-Spectral Coefficients," IEEE Trans. Audio, Speech, and Language Processing, vol. 15, no. 3, pp. 796-802, Mar. 2007.
[32] J. Kraaier and U. Killat, "The Influence of User Mobility on Vehicular Internet Access via IEEE 802.11 Access Points," Proc. IEEE Int'l Conf. Wireless and Mobile Computing, Networking and Comm., 2006.
[33] E. Zola and F. Barcelo-Arroyo, "Impact of Mobility Models on the Cell Residence Time in WLAN Networks," Proc. IEEE Sarnoff Symp., pp. 1-5, 2009.
[34] S. Thajchayapong and J.M. Peha, "Mobility Patterns in Microcellular Wireless Networks," IEEE Trans. Mobile Computing, vol. 5, no. 1, pp. 52-63, Jan. 2006.
[35] A. Feldmann and W. Whitt, "Fitting Mixtures of Exponentials to Longtail Distributions to Analyze Network Performance Models," Performance Evaluation, vol. 31, nos. 3/4, pp. 245-279, Jan. 1998.
[36] N. Benameur, S. Fredj, F. Delcoigne, S. O-Boulahia, and J. Roberts, "Integrated Admission Control for Streaming and Elastic Traffic," Proc. Second Int'l Workshop Quality of Future Internet Services, Sept. 2001.
[37] E. Hyytia, P. Lassila, and J. Virtamo, "Spatial Node Distribution of the Random Waypoint Mobility Model with Applications," IEEE Trans. Mobile Computing, vol. 5, no. 6, pp. 680-694, June 2006.
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