计算机工程 ›› 2009, Vol. 35 ›› Issue (20): 94-96.doi: 10.3969/j.issn.1000-3428.2009.20.033

• 网络与通信 • 上一篇    下一篇

基于IEEE 802.16e的VoIP公平调度算法

张红霞,戴居丰   

  1. ZHANG Hong-xia, DAI Ju-feng
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-10-20 发布日期:2009-10-20

Fair Schedule Algorithm for VoIP Based on IEEE 802.16e

ZHANG Hong-xia, DAI Ju-feng   

  1. (School of Electrical Information and Engineering, Tianjin University, Tianjin 300072)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-10-20 Published:2009-10-20

摘要: 针对IEEE 802.16e未规定具体的服务质量调度算法的问题,提出一种适用于IP电话(VoIP)业务的算法,该算法包括额外带宽再分配策略和补偿机制,根据业务流的优先级分配额外带宽,滞后的流根据它所丢失的服务被补偿。仿真结果表明,经过一段时间,业务流实际接收的服务与它在理想无差错系统中所得到的服务的差近似为0。

关键词: 无线城域网, IP电话, 调度算法, 补偿, 公平性

Abstract: An algorithm for Voice-over-Internet Protocol(VoIP) is proposed, because schedule algorithms guaranteeing Quality of Service(QoS) are not defined in IEEE 802.16e. The algorithm adopts extra-bandwidth allocation policy and compensation scheme. It allocates the extra-bandwidth according to the flow’s priority. The lagging flows are compensated according to services it has lost. Simulations results indicate that the difference in services between the flow received in actual system and in ideal system is almost equal to zero.

Key words: Wireless Metropolitan Area Network(WMAN), Voice-over-Internet Protocol(VoIP), schedule algorithm, compensation, fairness

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