Call management based on the mobile terminal-peak velocity: virtues and limitations in a two-tier cellular system

The aim of the presented research is to study an effective algorithm for the admission control and handoff management of mobile user connections in a realistic urban scenario with a two-tier (micro- and macrocell) cellular coverage. The algorithm behavior is strongly related to the knowledge of the mobility profile of the users. Thus, an analysis of analogous algorithms available in literature and which exploit mobility estimation precedes our design activity. Their advantages and drawbacks have been observed and are used as a starting point for the design of our algorithm. It overcomes the weaknesses that the previous algorithms show when operating in a realistic urban scenario. As a consequence, it reduces the call-blocking probability and minimizes the handoff rate.

[1]  W. C. Jakes,et al.  Microwave Mobile Communications , 1974 .

[2]  Eisuke Fukuda,et al.  Estimating velocity using diversity reception , 1994, Proceedings of IEEE Vehicular Technology Conference (VTC).

[3]  Antonio Iera,et al.  Hand-off management algorithms for urban and sub-urban environments under realistic vehicle mobility conditions , 1998, ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220).

[4]  Akira Fukuda,et al.  Performance analysis of flexible hierarchical cellular systems with a bandwidth-efficient handoff scheme , 2001, IEEE Trans. Veh. Technol..

[5]  Zygmunt J. Haas,et al.  On optimal design of multitier wireless cellular systems , 1997 .

[6]  Chi Wan Sung,et al.  User speed estimation and dynamic channel allocation in hierarchical cellular system , 1994, Proceedings of IEEE Vehicular Technology Conference (VTC).

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

[8]  K. L. Yeung,et al.  Channel management in microcell/macrocell cellular radio systems , 1996 .

[9]  Lawrence Wai-Choong Wong,et al.  Teletraffic performance of highway microcells with overlay macrocell , 1989, IEEE J. Sel. Areas Commun..

[10]  Philippe Godlewski,et al.  Performance of a hierarchical cellular network with mobility-dependent hand-over strategies , 1996, Proceedings of Vehicular Technology Conference - VTC.

[11]  Ian F. Akyildiz,et al.  A dynamic location management scheme for next-generation multitier PCS systems , 2002, IEEE Trans. Wirel. Commun..

[12]  Ian F. Akyildiz,et al.  Mobility Management in Next Generation Wireless Systems , 1999, ICCCN.

[13]  Antonio Iera,et al.  Handoff management with mobility estimation in hierarchical systems , 2002, IEEE Trans. Veh. Technol..

[14]  Xavier Lagrange.  Multitier cell design , 1997 .