Cellular Equipment White Papers
An Efficiency Limit of Cellular Mobile Systems
Overview
We consider cellular mobile systems where in order to limit handoff blocking probability, admission control is applied to new call requests and
capacity is reserved for future handoff attempts. We show that due to this
advance reservation the achievable efficiency of the system has an upper bound even if no constraint is specified
on the blocking probability of new call requests. As a reference case, we first calculate the efficiency of a system with deterministic advance reservation.
Next, we consider systems with statistical reservation and calculate the maximum achievable efficiency, under the set of possible local
admission control policies subject to a hard constraint on the probability of call failure due to handoff blocking. We relate this maximum to call and mobility characteristics and show that the achievable efficiency decreases with decreasing cell size and with increasing proportion of multimedia calls, both of which are recognized trends today.
| Publisher | Columbia University Department of Computer Science | File Format | PDF, requires Acrobat Rdr 5 |
|---|---|---|---|
| Date Published | August 2003 | Downloads | 6 |
| Format | White Papers | ||
| Topics | |||
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