一种分级WFQ的宽带无线接入系统QoS架构  

QoS Architecture of Broadband Wireless Access System with Hierarchical Weighted Fair Queueing

作　　者：杨博[1] 刘琰[1] 刘乃安[1] 

机构地区：[1]西安电子科技大学ISN国家重点实验室,陕西西安710071

出　　处：《中兴通讯技术》2005年第2期36-38,42,共4页ZTE Technology Journal

基　　金：武器装备预研基金(514341401)

摘　　要：文章介绍了加权公平排队(WFQ)分组调度算法和IEEE802.16的QoS架构。在此基础上,文章结合分级WFQ分组调度算法和IEEE802.16协议中所提供的控制机制提出了一种适合于BWA系统的QoS架构。该架构充分利用IEEE802.16提供的控制机制,结合分级WFQ公平队列调度算法,在主动授予业务(UGS)、实时轮询业务(rtPS)、非实时轮询业务(nrtPS)和尽力传输业务(BE)之间公平分配带宽,并保证各种业务的QoS特性,完成了在IEEE802.16协议中留给用户自己定义的调度策略。The (WFQ) packet scheduling algorithm and the QoS architecture of IEEE 802.16 are introduced. Based on the control mechanism supported by the Hierarchical WFQ packet scheduling algorithm and IEEE 802.16 protocols, a QoS architecture for Broadband Wireless Access Systems (BWA) is proposed. This architecture can make better use of IEEE 802.16 control mechanism and realize fair bandwidth allocation among the Unsolicited grant Service (UGS), Real Time Polling Service (rtPS), non-Real Time Polling Service (nrtPS) and Best Effort (BE) transmission service. It can also guarantee the QoS of various services, thus implementing the scheduling reserved by IEEE 802.16 for users to make specific definitions.

关 键 词：宽带无线接入系统 QoS WFQ IEEE802.16协议 架构 分组调度算法 种分 加权公平排队 队列调度算法 控制机制 BWA系统 充分利用 公平分配 传输业务 调度策略 文章 轮询 实时 

分 类 号：TN929.5[电子电信—通信与信息系统]