Self-tuning prioritized call handling mechanism with dynamic guard channels for mobile cellular systems

TitleSelf-tuning prioritized call handling mechanism with dynamic guard channels for mobile cellular systems
Publication TypeConference Paper
Year of Publication1996
AuthorsYu, O. T. W., and V. C. M. Leung
Conference NameVehicular Technology Conference, 1996. 'Mobile Technology for the Human Race'., IEEE 46th
Pagination1520 -1524 vol.3
Date Publishedapr.
Keywordsadaptive control, blocked calls dropped service discipline, blocking probability, cellular radio, dynamic guard channels, fixed guard channel, handoff call blocking, handoff calls, handoff traffic, mobile cellular systems, new call blocking, nonstationary call arrival rates, performance comparison, probability, self-tuning prioritized call handling, telecommunication channels, telecommunication congestion control, telecommunication traffic

In mobile cellular systems, handoff call blocking is less tolerable to the subscribers than new call blocking. To give handoff calls a lower blocking probability, the fixed guard channel scheme reserves a number of guard channels for handoff calls, which share the remaining channels with new calls. The number of guard channels is fixed and may be too high when handoff traffic is low, and vice versa. We propose a dynamic guard channel scheme which dynamically varies the number of guard channels in a cell with a current estimate of the handoff traffic, given by the current number of ongoing calls in neighbouring cells. We present a performance comparison of the fixed and the proposed dynamic guard channel schemes under the blocked-calls-dropped service discipline for both the new and handoff calls, and show that the adaptive control capability of the proposed dynamic guard channel scheme provides better performance when the system is subjected to non-stationary call arrival rates


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