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随着用户数和应用业务的快速发展,对新一代Internet的服务质量提出了更高的要求。然而,在Internet中引入无线接入方式使得提供QoS面临更大挑战。文章基于区分服务(DiffServ)框架结构,并结合移动管理协议———移动IP(MobileIP)协议来研究和解决如何在新一代移动无线互联网中提供QoS控制。同时在每个自治域中引入一个新的概念———QoS域代理(QoSDomainAgent,QDA),并利用QDA进行资源管理并参与和移动主机/用户(MobileHost,MH)或其它QDA进行动态SLS的协商,同时采用组播方式把QDA中的QoSSLS内容信息传输给域内的每一个第一跳和边界路由节点。通过对相关协议和功能进行必要的修改和扩充,从而有效地解决了MH和网络的动态服务级别协议(SLA)的协商和在MobileIP切换中各入口节点动态建立SLS的问题,同时可以有效减少信令交互,节省无线资源和减少移动终端的电池消耗,并且有利于MH在域内漫游时进行无缝切换。最后给出作者的结论及进一步的研究内容。
With the rapid development of the number of users and application services, higher quality requirements for the new generation of Internet service are put forward. However, the introduction of wireless access in the Internet poses a further challenge in providing QoS. Based on the framework of DiffServ architecture and the Mobile Management Protocol (Mobile IP), Mobile IP protocol is used to research and solve the problem of how to provide QoS control in next-generation mobile wireless Internet. At the same time, a new concept of QoS Domain Aid (QDA) is introduced in each autonomous domain and QDA is used for resource management and participating in dynamic SLS negotiation with Mobile Host (MH) or other QDA At the same time, multicast information is used to transmit QoS information in QDA to every first hop and border routing node in the domain. Through the necessary modification and expansion of relevant protocols and functions, the negotiation of dynamic service level agreement (SLA) between MH and network and the establishment of SLS dynamically at each ingress node in MobileIP handover are effectively solved. At the same time, Enable interaction, save wireless resources and reduce battery drain on mobile terminals, and help the MH to seamlessly switch while roaming within the domain. Finally, the writer’s conclusion and further research contents are given.