Analytical-numerical study of the handoff area sojourn time

In cellular systems, there is usually an overlap cell coverage area (area covered by two or more base stations) which has valuable practical applications: soft handoff is an important feature of CDMA systems, and in hard handoff, the overlap area allows the queuing of handover requests as a handover prioritization scheme. While an extensive research effort has been done to model the terminal residence time in a cell and the channel holding time, the sojourn time in the overlap area is a topic that still requires further study. We propose a model of the sojourn time in the overlap area, along with a novel numerical method to derive its probability distribution. The obtained results show that the common assumption of exponential distribution for this time is not suitable, whereas it can be satisfactorily fitted by the hyper Erlang distribution.

[1]  Duk Kyung Kim,et al.  Characterization of soft handoff in CDMA systems , 1999 .

[2]  Prem Dassanayake,et al.  User Mobility Modeling and Characterization of Mobility Patterns , 1997, IEEE J. Sel. Areas Commun..

[3]  Yi-Bing Lin,et al.  Queueing priority channel assignment strategies for PCS hand-off and initial access , 1994 .

[4]  Stephen S. Rappaport,et al.  Traffic Model and Performance Analysis for Cellular Mobile Radio Telephone Systems with Prioritized and Nonprioritized Handoff Procedures - Version 2a , 2000 .

[5]  Holger Boche,et al.  Analysis of analytical mobility models with respect to the applicability for handover modeling and to the estimation of signaling cost , 2000, MobiCom '00.

[6]  Victor C. M. Leung,et al.  Probability distribution of channel holding time in cellular telephony systems , 1996, Proceedings of Vehicular Technology Conference - VTC.

[7]  Dan Keun Sung,et al.  Soft handoff modeling in CDMA cellular systems , 1997, 1997 IEEE 47th Vehicular Technology Conference. Technology in Motion.

[8]  Dan Keun Sung,et al.  Modeling and analysis of CDMA soft handoff , 1996, Proceedings of Vehicular Technology Conference - VTC.

[9]  Y. H. You,et al.  Numerical Analysis of the Dwell Time Distribution in Mobile Cellular Communication Systems , 1998 .

[10]  David McMillan.  Delay analysis of a cellular mobile priority queueing system , 1995, TNET.

[11]  Romano Fantacci,et al.  Performance evaluation of a CDMA protocol for voice and data integration in personal communication networks , 2000, IEEE Trans. Veh. Technol..

[12]  G. P. Pollini,et al.  Trends in handover design , 1996, IEEE Commun. Mag..

[13]  Bijan Jabbari,et al.  A Measurement-Based Prioritization Scheme for Handovers in Mobile Cellular Networks , 1992, IEEE J. Sel. Areas Commun..

[14]  Ramjee Prasad,et al.  An overview of CDMA evolution toward wideband CDMA , 1998, IEEE Communications Surveys & Tutorials.

[15]  David J. Goodman,et al.  Mobility models and biased sampling problem , 1993, Proceedings of 2nd IEEE International Conference on Universal Personal Communications.

[16]  Stephen S. Rappaport,et al.  Traffic model and performance analysis for cellular mobile radio telephone systems with prioritized and nonprioritized handoff procedures , 1986, IEEE Transactions on Vehicular Technology.

[17]  Berth Eklundh,et al.  Channel Utilization and Blocking Probability in a Cellular Mobile Telephone System with Directed Retry , 1986, IEEE Trans. Commun..

[18]  Romano Fantacci.  Performance evaluation of prioritized handoff schemes in mobile cellular networks , 2000, IEEE Trans. Veh. Technol..

[19]  Villy Bæk Iversen,et al.  Distribution of channel holding times in cellular communication systems , 2001 .

[20]  Johan Karlsson,et al.  A cellular mobile telephone system with load sharing-an enhancement of directed retry , 1989, IEEE Trans. Commun..

[21]  Chung-Ju Chang,et al.  Analysis of a cutoff priority cellular radio system with finite queueing and reneging/dropping , 1994, TNET.

[22]  R.A. Guerin,et al.  Channel occupancy time distribution in a cellular radio system , 1987, IEEE Transactions on Vehicular Technology.

[23]  Vicent Pla,et al.  Effect of the handoff area sojourn time distribution on the performance of cellular networks , 2002, 4th International Workshop on Mobile and Wireless Communications Network.

[24]  Marina Ruggieri,et al.  Modeling of the handover dwell time in cellular mobile communications systems , 1998 .

[25]  Francisco Barceló,et al.  Channel holding time distribution in public telephony systems (PAMR and PCS) , 2000, IEEE Trans. Veh. Technol..

[26]  Romano Fantacci,et al.  Handover queuing strategies with dynamic and fixed channel allocation techniques in low Earth orbit mobile satellite systems , 1999, IEEE Trans. Commun..