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Packet scheduling for Voice over IP over HSDPA in mixed traffic scenarios with different end-to-end delay budgets

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3 Author(s)
Andre R. Braga ; Wireless Telecommunications Research Group (GTEL), Federal University of Ceará (UFC), P.O. Box 6005, Zip Code 60455-760, Fortaleza-CE, Brazil ; Emanuel B. Rodrigues ; Francisco R. P. Cavalcanti

By means of dynamic system-level simulations, this work evaluates whether the studied Packet Scheduling (PS) algorithms are capable of guaranteeing the quality of service (QoS) of the voice over IP (VoIP) on a scenario where the VoIP and Web browsing services will compete for the same resources and there is a maximum allowed end-to-end delay for VoIP packets. Two sets of algorithms were considered: QoS-differentiated and non-QoS-differentiated algorithms. It was verified the system capacity gains when the VoIP delay budget is increased. Regarding the PS performance, those algorithms able to perform QoS differentiation presented better performance in terms of system capacity and QoS compared to those non-QoS-differentiated algorithms. Among the former category, those that take into consideration delay requirements of the VoIP service presented the best overall capacity for all traffic mixes and delay budgets.

Published in:

Telecommunications Symposium, 2006 International

Date of Conference:

3-6 Sept. 2006