无线网络中轮询控制系统分析与改进的研究

项目名称： 无线网络中轮询控制系统分析与改进的研究

项目编号： No.61461054

项目类型： 地区科学基金项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 杨志军

作者单位： 云南大学

项目金额： 50万元

中文摘要： 无线网络以其接入的便捷性、灵活性而得到广泛的应用，按覆盖范围可分为无线个域网、无线局域网和无线城域网。无线网络媒体访问控制技术(MAC)分为随机多址和轮询两大类，对无线网络上支持视频、语音等多种业务的 MAC协议研究具有重要意义。本项目研究无线网络的轮询控制技术，通过查询顺序、服务策略和对称性等分析轮询系统，研究优先级、混合服务策略和非对称轮询系统的基础模型和模型之间的转换。深入分析无线局域网IEEE802.11 系列协议的轮询机制，改进提出QoS保障、基于优先级的控制策略；在分析无线城域网MAC协议IEEE802.16四种业务调度类型的基础上，研究区分业务优先级的轮询控制协议；改进个域网蓝牙技术中主从设备间的轮询调度方式，提出基于站点业务类型优先级和QoS保障的算法。在建立的协议模型基础上，精确解析系统平均排队队长和平均时延等特性，通过实验验证。研究无线传感器网络基于分簇的轮询控制技术。

中文关键词： 无线网络；轮询系统；协议分析；改进研究

英文摘要： Wireless Computer Networks have a wide range of applications for their convenience and flexibility. They are classified into Wireless Metropolitan Area Network (WMAN),Wireless Local Area Network(WLAN) and Wireless Personal Area Network(WPAN) according to the covering ranges. In Wireless Computer Networks the medium access controls are mainly organized with polling system and random multiple access. Research on medium access control (MAC) protocols supporting for delay sensitive traffic such as audio and video results in an important meaning. This project focuses on techniques of polling system and analyses basic models of priority-based, multiple-services-strategy and asymmetric polling systems and converts among them based on the polling orders, service strategies ,symmetry and etc . For IEEE 802.11 MAC protocol of WLAN this project will give an improvement for guaranteeing priority-based QoS. For WMAN's IEEE 802.16 MAC protocol a further priorities differentiation polling scheme for the four traffic categories will be studied. Through changing the polling scheme in Bluetooth MAC protocol for Master device to poll Slave devices a new algorithm for guaranteeing QoS will be analysed. Based on the above protocol models exact analyses of mean queue length, cyclic time, message delay and etc are addressed. Based on the clustering algorithm of Wireless Sensor Network(WSN) the polling scheme is researched and the protocol to guarantee a differentiated traffic priorities is developed on a selected platform. The above researches will promote the development and application of polling system in Wireless Computer Network.

英文关键词： Wireless Network;Polling system;MAC protocol analyses;Research of development