Computer Engineering and Applications ›› 2010, Vol. 46 ›› Issue (29): 93-97.DOI: 10.3778/j.issn.1002-8331.2010.29.026

• 网络、通信、安全 • Previous Articles     Next Articles

Switch architecture providing QoS guarantees

GUO Zi-rong1,2,WANG Hai-ying1,ZENG Hua-xin1   

  1. 1.School of Information Science and Technology,Southwest Jiaotong University,Chengdu 610031,China
    2.Baotou Railway Vocational and Technical Institute,Baotou,Inner Mongolia 014040,China
  • Received:2009-03-05 Revised:2009-04-20 Online:2010-10-11 Published:2010-10-11
  • Contact: GUO Zi-rong

一种可提供QoS保证的交换结构

郭子荣1,2,汪海鹰1,曾华燊1   

  1. 1.西南交通大学 信息科学与技术学院,成都 610031
    2.包头铁道职业技术学院,内蒙古 包头 014040
  • 通讯作者: 郭子荣

Abstract: Ethernet-oriented Physical Frame Timeslot Switching(EPFTS) is the key technique in SUPANET(Single physical-layer User-data transfer Platform Architecture Network) which is a new network architecture proposed by Sichuan Network Communication Key Laboratory.In this paper a switch architecture is proposed for EPFTS which can provide QoS guarantee in physical layer.The proposed switch architecture is based on high speed bus and separate output queue per input(called a Bus-based and Per Input-Output Queue,BPIOQ).The queuing policy of logical queues is also proposed for BPIOQ.The emulation result shows that the proposed switch architecture with weighted fair queuing algorithm can provide QoS guarantee.

摘要: 面向以太网的物理帧时槽交换(EPFTS)是四川省网络与通信技术重点实验室提出的“单物理层用户数据传输平台网络”中的关键技术,它是以“面向以太网的帧”为数据传输单元的高速交换技术,正是针对实现EPFTS而提出的交换结构方案。在对常用的交换结构和调度算法进行分析的基础上,针对EPFTS要达到的目标和技术特点,提出了一种能够在物理层交换中保证服务质量的交换结构,称为基于总线的、每输入-输出独立的输出缓存交换结构,同时提出了逻辑队列的排队策略,并对该结构进行了软件仿真。仿真结果表明,使用加权公平调度算法,提出的交换结构对实时业务可提供端到端的QoS保证,对非实时业务可提供最大-最小公平服务。

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