文档介绍：中文摘要
在20世纪90年代以来,随着移动通信的发展和普及,无线通信技术日益受到重视,其应用也越来越广泛。“最后一公里一的接入网技术开始从有线向无线发展,在这个背景下,无线城域网技术开始迅速发展。
IEEE于2004年6月发布了在IEEE 【l】【28】,-Iz的频段上提供高速的无线接入服务的空中接口。该标准中定义了四种类型的业务流,因而为不同类型的业务流提供QoS保证是一个非常重要而且有难度的课题。尽管标准详细的定义了llAC层信号机制,但并没有一套完整的资源管理调度机制,而资源管理和调度是影响OoS性能的重要部分。
本文首先简要介绍了IEEE ,分析了其00S机制的主要内容,包括带宽的请求分配机制,准入和调度机制等,比较完整地介绍了1EEE QoS结构。此后,本文提出了IEEE ,包括其准入控制以及上行带宽调度机制,并在这两个方面提出了我们的结论。我们的研究成果包括基于链路状态的准入控制方法以及一个TDD模式下关于 IEEE ,该调度算法在保证实时性的基础上,较好地解决了不同业务流之间的公平性问题。通过我们提出的00S机制,可以为不同的级别的业务提供不同等级的00S服务。仿真结果证明, 我们提出的IEEE :
关键词: IEEE
ABSTRACT
During the development and popularization of munication since 1 990s, the technology of wireless munication has been gained more and more
attention and its application has been widely “last-mile'’network access technology has extended from lineate to this background, metropolitan works develop quickly.
In June,2004,the IEEE released the standard 6—2004,which defmed the air
interface which provide high—speed wireless agcess service in 2-66GHz metropolitan standard has defined four kinds of business ,how to provide different kinds of QoS became an important and difficult the MAC signaling has been well-defined in the, 6 specifications,we don’t have the explicit management and scheduling algorithm for the resource,which is crucial to guarantee the QoS performance.
First of all,we introduce in this paper the protocol of IEEE ,and after which we analyze the mechanism of QoS,including the request and allocation mechanism of bandwidth,the admission and scheduling mechanism,give plete introduction to the IEEE 6 QoS this paper presents the part that the IEEE 6 QoS Architecture needs to be improved,including the admission
control and its upstream bandwidth management,we propose Our own research r