Diffserv Conditionalized Handover for HMIPv6

As mobile devices and wireless network are become popular, real-time and data streaming applications on mobile network 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. Hierarchical Mobile IPv6 (HMIPv6) was proposed in order to improve mobile performance by reducing latency during the handoff period. In this paper, we propose a mechanism to control network resources on mobile access routers by extending Differentiated Services (Diffserv) to HMIPv6 architecture. Our framework includes a Diffserv edge function and extending router advertisement daemon (radvd) to advertise current resource available on an Access Router (AR). Whenever multiple access routers exist in the same area, Mobile Node (MN) can select to handover to a new access router with the best QoS condition. We implement and evaluate our proposed work on the Linux kernel, and also extend new ICMPv6 options on Neighbor Discovery message.