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移动IPv6的切换技术(handover)是移动IPv6技术QoS的主要衡量标准。文中介绍了移动IPv6的工作原理,并分析了3种切换方案(scheme),包括快速切换(fast handover),层次切换(he)和快速(FHMIPv6)层次切换的优点和缺点。针对层次切换方案的局限性,在其基础上引入了一个新的功能实体(entity)—RAP,增大了移动节点切换的区域范围,通过减轻家乡代理(home agent)和通信对端(node)的注册等待时间来减少切换时延(handover latency),并在OPNET仿真环境下验证了该方案的可行性和有效性。
Mobile IPv6 handover is the primary measure of QoS for Mobile IPv6. This paper introduces the working principle of Mobile IPv6 and analyzes three kinds of switching schemes, including the advantages and disadvantages of fast handover, hierarchical switching (he) and fast switching (FHMIPv6). Aiming at the limitation of hierarchical handover scheme, a new functional entity-RAP is introduced based on it, which enlarges the range of handover of mobile node and reduces the number of home agent and communication node. Of the registration latency to reduce the handover latency (handover latency), and verify the feasibility and effectiveness of the program in OPNET simulation environment.