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目前对移动 Internet上服务质量 (Qo S)的保证方法 ,大都没有考虑端到端 Qo S保证及准入与资源预留的结合 .文中提出了一种准入及资源预留策略 ,将应用服务分为三类 ,对其中两类服务同时考虑移动主机本地资源信息和移动范围内的资源信息 ,并改进资源预留协议 (RSVP)来在相应 IP流路径上的所有网络节点进行准入控制和资源预留分配 ,从而达到移动 Internet上的端到端 Qo S控制的目的 .仿真结果表明 ,该策略有效降低了服务的切换失败概率 ,保证了端到端 Qo S.
At present, most of the methods of guaranteeing quality of service (QoS) on the mobile Internet do not consider the combination of end-to-end QoS guarantee and admission and resource reservation.In this paper, a admission and resource reservation strategy is proposed, There are three types of services, and the two types of services consider both the local resource information of the mobile host and the resource information within the moving range, and improve the resource reservation protocol (RSVP) to perform admission control on all network nodes in the corresponding IP flow path and Resource reservation and allocation, so as to achieve the end-to-end Qo S control over mobile Internet.The simulation results show that this strategy effectively reduces the probability of service handover failures and guarantees end-to-end QoS.