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DIFFSERV CONDITIONALIZED HANDOVER FOR HMIPv6

 

TITLE DIFFSERV CONDITIONALIZED HANDOVER FOR HMIPv6
AUTHOR SOPHON MONGKOLLUKSAMEE
DEGREE MASTER OF SCIENCE PROGRAMME IN COMPUTER SCIENCE
FACULTY FACULTY OF SCIENCE
ADVISOR VASAKA VISOOTTIVISETH
CO-ADVISOR
 
ABSTRACT
As mobile devices and wireless networks become popular, real-time and data streaming applications on mobile networks gain more attention from application developers and users. These kinds of applications all need seamless mobility and QoS provisioning in order to guarantee the service. Recently, The Hierarchical Mobile IPv6 (HMIPv6) was proposed in order to improve mobile performance by reducing latency during handoff periods. A mechanism is proposed to control network resources on mobile access routers by extending Differentiated Services (Diffserv) to HMIPv6 architecture. The proposed framework includes extending a Diffserv edge function and router advertisement daemon (radvd) to advertise the current amount of available resources on an Access Router (AR). Whenever multiple access routers exist in the same area, Mobile Node (MN) can select a new access router that can provide the best QoS condition. The proposal was implemented and evaluated on the Linux kernel, and new ICMPv6 options on Neighbor Discovery message were also extended. The experimental results confirmed that the proposed mechanism a MN can choose the best New Access Router before a handover. Thus, the performance of MIPv6 and HMIPv6 is improved in terms of gained available bandwidth, small number of packet loss, and less transmission time.
KEYWORD HIERARCHICAL MOBILE IPv6 / DIFFSERV / QoS / HANDOVER

 

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