摘要
在HMIPv6中,当发生区域间切换时,移动节点MN需要向家乡代理和通信对端注册,这导致了较长的时延和较多的开销。提出一种改进的方案:MN发生区域间切换时,先利用之前所注册的实体移动锚点MAP作为新进入的区域MAP的上层代理来减少切换时延;然后根据自己的移动特性计算决定本次切换是否进行家乡注册,通过进一步减少家乡注册的次数来降低开销。数值分析和仿真结果表明该方法的有效性,对于不同的移动环境,平均开销相对更优,体现了较好的自适应性。
In HMIPv6, mobile node （MN） needs to perform registrations for home agent and communication pair when the handover occurs between two domains, this results in longer delay and higher overhead. This paper proposes an improved handover scheme, in which the MN utilises the MAP previously registered as the upper agent of the newly entered regional MAP to reduce handover delay when the handover occurs between two MAP domains, and then calculates and decides whether to perform home registration in handover of this time according to its own mobile characteristic. It reduces the overhead by further reducing the number of times of home registration. Numerical analysis and simulation result show that the proposed method is effective. For different mobile environments, the improved scheme reveals better adaptability with relatively superior average overhead.
出处
《计算机应用与软件》
CSCD
2016年第1期94-97,111,共5页
Computer Applications and Software
基金
国家自然科学基金项目(61363050)
