E. Onur, H. Deliç, C. Ersoy and M. U. Çağlayan, "Measurement Based Replanning
of Cell Capacities in GSM Networks," Computer Networks, Vol:39 (6), pp 749-767,
August 2002.
Abstract - Due to the scarcity of the spectral resources and mobility of the
portables, the call attempts may be blocked during call initiation or terminated
during the hand-off process. When the blocking ratio exceeds some grade of
service level, the capacity of the congested cell must be replanned using
the call attempt data. However, most of the time, the measurements are inflated
by the redials and the retrials. During the replanning process, the first
step should be to calculate the effective load from the measured cumulative
call statistics. In this paper, we provide simple-to-implement analytical
models that compute the average number of retrials and redials per original
call attempt using only the operations and maintenance center (OMC) measurements.
The effective load is then determined through appropriate scaling. That way,
unnecessary waste of channels to sustain retrials and redials is avoided
during the cellular capacity replanning phase.
A preliminary version of the paper in Adobe Acrobat (233 KBytes) |
Postscript (743 KBytes)
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