WiMAX系统中QoS机制研究 （Study on QoS ...

WiMAX系统中QoS机制研究
WiMAX系统中QoS机制研究
Study on QoS Mechanisms in WiMAX Systems
彭木根,李茗,王文博

摘要：文章分析了WiMAX系统QoS机制的主要内容：业务流管理、QoS保证算法，探讨了Q
oS机制对主动授权、实时查询、非实时查询和尽力而为等数据业务的支持。为了让不同
业务的QoS得到保证，文章重点探讨了基于信道状态的分组调度算法(CSDPS)、基于业务
类型排队(CBQ)的CSDPS调度算法和通用处理器共享策略，并给出了相应的算法模型。
关键词：无线城域网；IEEE 802.16协议；媒体接入控制；服务质量；调度算法
Abstract:The QoS associated with a WiMAX system mainly refers to: service
flow management and QoS guarantee algorithm, which are analyzed first. And
then the support of QoS for Unsolicited Grant Service (UGS), Real-Time
Polling Service (rtPS), Non-Real-Time Polling Service (nrtPS), Best Effort
(BE) and other data services are discussed. In order to guarantee the QoS
for multimedia services, the paper puts emphasis on the discussion of
Channel State Dependent Packet Scheduling (CSDPS) algorithm, Class Based
Queui