无线局域网服务质量的优化研究

目前的尽力而为的服务方式将实时应用和非实时平等看待,没有考虑实时应用的特殊要求.同时新增实时应用时,不会考虑现存实时应用资源是否充分.本文引入一个服务质量(QoS)软件框架来解决目前的问题,其中的分类模块可以将不同的应用放入实时队列和非实时队列;数据包调度模块严格执行了实时数据包优先调度机制;资源管理模块动态管理应用资源,确保实时应用资源优先分配.经试验证明,在对实时应用的支持方面,使用了基于软件框架的解决方案明显优于无软件框架的解决方案,为实时应用提供了良好的QoS支持,从而提高无线局域网的服务质量.

Research on optimization of service quality of wireless local area networks

Nowadays the best effort service takes a same treatment for either non-realtime or realtime applications,however,it does not meet special requirements in realtime applications.Therefore a software solution for quality of service(QoS) so as to improve QoS of wireless local area network.The classifying module can put realtime and non-realtime applications into different queues.The data packet dispatchingmodules is opplied under the condition that realtime data packet will be first dispatched.The resources management-module dynamically manages application resources in order to first dispatch realtime application resources.Experiments show that in the aspect of supporting realtime applications the scheme solved with software frame is better than that without software frame.It provides good QoS and promotes service quality in wireless local area network.