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The Voice-over-IP (VoIP) capacity of a mobile communication system is a crucial point to become an International Mobile Telecommunications (IMT)-Advanced member. This is reflected by special scenarios defined by the International Telecommunication Union - Radio Group (ITU-R) to asses the VoIP only capacity. It is expected that future mobile communication systems will operate packet-switched due to the dominance of data services. However, these systems do not cope well with voice services. In this paper, the authors present a simple mechanism that increases the VoIP capacity of packet-switched mobile communication systems. The analytical evaluation also presented herein confirms the potential of this technique.
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