# Capacity of multiservice WCDMA Networks with variable GoS

##
Nidhi Hegde

### INRIA Sophia Antipolis

### Résumé:

Traditional definitions of capacity of CDMA networks
are either related to the number of calls they can
handle (pole capacity) or to the arrival rate that
guarantees that the rejection rate (or outage) is below
a given fraction (Erlang capacity). We extend the
latter definition to other quality of service (QoS). We
consider best-effort (BE) traffic sharing the network
resources with real-time (RT) applications. BE
applications can adapt their instantaneous transmission
rate to the available one and thus need not be subject
to admission control or outages. Their meaningful QoS
is the average delay. The delay aware capacity is
defined as the arrival rate of BE calls that the system
can handle such that their expected delay is bounded by
a given constant. We compute both the blocking
probability of the RT traffic having an adaptive Grade
of Service (GoS) as well as the expected delay of the
BE traffic for an uplink multicell WCDMA system. This
yields the Erlang capacity for the former and the delay
capacity for the latter.

This is a joint work with E. Altman.