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The UMTS enhanced uplink enables the efficient transport of packet-switched Internet traffic. With bit rates comparable to DSL links, it is expected that best-effort services like file-sharing become increasingly popular in UMTS networks. These services are often volume-based, which means that the sojourn time of a connection depends on the transmitted data volume. In this work, we propose an analytic model for the interference and capacity in the enhanced Uplink, which considers the impact of volume-based traffic on system capacity, other-cell interference and co-existing time-based QoS users. The analytic model is validated with a flow-level event-discrete simulation.
Date of Conference: 17-19 Oct. 2007