期刊名称：International Journal of Advanced Research In Computer Science and Software Engineering
印刷版ISSN：2277-6451
电子版ISSN：2277-128X
出版年度：2013
卷号：3
期号：6
出版社：S.S. Mishra
摘要：The usage of mobile devices have increased enormously, users tend to change their positions frequently, during movement mobile node moves from one network to other. The process of mobile node (MN) movement from one network administrative domain to other is called handover. During this process large amount of time is wasted, the objective is to optimize the handover process by reducing the time taken during handover process. Internet Engineering Task Force introduced MobileIPv4, MobileIPv6 to support the handover process, when a MN leaves the home network (HN) and enters a foreign network (FN) it obtains a new IP address and updates its Care of Address (COA) to the HN. Handoff time is very high in MIPv6 due to its inability to differentiate micro mobility (intra network) and macro mobility (internetwork). Hierarchical MobileIPv6 (HMIPv6) introduced to address macro mobility performs Duplicate Address Detection (DAD) at two levels which consumes high handover time, packet losses are high in HMIPv6. The proposal is to reduce the time taken during handover process, the major component that consumes more time during handover is DAD, it is an important component in maintaining the address uniqueness. So DAD performed at MN end is shifted to Router end, during handover router generates IP addresses and performs DAD on generated addresses to maintain address uniqueness and stores it in blackboard storage, thus the addresses stored are unique. The unique address from the router is assigned to the MN, thus the routers processing power and storage capacity is utilized by performing DAD at router end, heavy packet losses are reduced and handover time can be reduced to a great extend.
