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A Priority-Based Packet Scheduling Architecture for Integrated Services Networks
Junni ZOU Hongkai XIONG Rujian LIN
Publication
IEICE TRANSACTIONS on Communications
Vol.E89-B
No.3
pp.704-708 Publication Date: 2006/03/01 Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.3.704 Print ISSN: 0916-8516 Type of Manuscript: Special Section LETTER (Special Section on the Next Generation Ethernet Technologies) Category: Keyword: QoS, priority, packet scheduling, sorted-priority, frame-based,
Full Text: PDF(299KB)>>
Summary:
To simultaneously support guaranteed real-time services and best-effort service, a Priority-based Scheduling Architecture (PSA) designed for high-speed switches is proposed. PSA divides packet scheduling into high-priority phase and low-priority phase. In the high-priority phase, an improved sorted-priority algorithm is presented. It introduces a new constraint into the scheduling discipline to overcome bandwidth preemption. Meanwhile, the virtual time function with a control factor α is employed. Both computer simulation results and theoretic analysis show that the PSA mechanism has excellent performance in terms of the implementation complexity, fairness and delay properties.
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