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| PSS: A QoS-Oriented and Priority-Based Packet Scheduling Structure |
| Zou Jun-ni; Xu Sun-juan; Lin Ru-jian |
| School of Communication Engineering, Shanghai University, Shanghai 200072, China |
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Abstract To solve the QoS issue of the Internet including multi-services, a Priority-based Scheduling Structure (PSS) designed for high-speed packet networks is proposed. PSS divides packet scheduling into high-priority section and low-priority section. In the high-priority section, a sorted-priority algorithm with low implementation complexity is presented to avoid bandwidth preemption and to control effectively service rates of high-priority services. In the low-priority section, an improved framed-based algorithm is proposed, which decreases not only the algorithm complexity but also the hardware implementation cost. Computer simulation results as well as theoretic analysis show that the PSS mechanism has excellent performance in terms of the implementation complexity, fairness and delay properties.
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Received: 09 June 2005
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2007, Vol. 29 
