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Influence of a Few More Channels for Voice Support in B3G Multi-Service Traffic in the Presence of Mobility

Paulo, R. R. ; Velez, F. J. ; Rodrigues, A. J.

Influence of a Few More Channels for Voice Support in B3G Multi-Service Traffic in the Presence of Mobility, Proc Vehicular Technology Conference: VTC-Spring , Taipei, Taiwan, Vol. -, pp. - - -, May, 2010.

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Abstract
The analysis of the impact of voice-over-IP (VoIP)
into HSPA multi-service traffic is a challenge. The validation
of a Bernoulli-Poisson-Pascal multi-service traffic model in the
presence of mobility is explored for different values for the
number of channels. A mixture of voice (VOI) and video
telephony (VTE) is considered. In a previous work, a critical
situation was assumed where the total number of channels was
exactly the same as needed by four VTE sessions. However, when
few extra channels are added there is a significant reduction on
VTE on=off blocking probability. With this few extra resources,
VOI can now be easily supported. Since it is supported on top of a
system saturated with VTE sessions, Pbonoff decreases 4.6 times
for VTE. Since the number of resources is not critical anymore,
the range of values of the offered traffic for which the theoretical
model agrees with simulation results becomes wider. There is no
significative difference between the multi-service traffic results
for the seven cell geometry and the roundabout (or ring) cellular
topologies in the presence of mobility.