Universiti Teknologi Malaysia Institutional Repository

Differentiated services enhancements for efficient IP QoS implementation

Abidin, H. Z. and Din, M. N. and Fisal, Norsheila (2005) Differentiated services enhancements for efficient IP QoS implementation. In: 2005 13th IEEE International Conference on Networks jointly held with the 2005 7th IEEE Malaysia International Conference on Communications.

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Official URL: http://dx.doi.org/10.1109/ICON.2005.1635493


To enhance the deployment of DifServ network we propose two mechanisms, i.e. Connection Admission Control (CAC) facility and hierarchical scheduling. In this paper we describe both facilities and report the results of the simulation work. Simulation work was conducted using ns-2. The CAC scheme is parameter-based, where three distinct types of DiffServ traffic were given bandwidth allocation using peak rate, effective rate and mean rate values. In the simulation work, it is found that the admission control scheme gave better service in terms of blocking probability, throughput and queue size compared to normal DiffServ network. Whereas in the hierarchical scheduling scheme, two levels of scheduling were used, i.e. using weighted round robin and priority queuing. The network performance in terms of throughput is observed. The simulation results shows that better performance were achieved with hierarchical scheduling

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Admission control, diffServ, hierachical scheduling
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:7426
Deposited By: Nur Amal Zakiah Shamsudin
Deposited On:05 Jan 2009 00:35
Last Modified:01 Oct 2017 04:29

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