A QoS Pre-Configure Mechanism on DiffServ Mobile IPv6 Networks
IPv6 is the next generation IP protocol to solve the lack of IP address problem and it has been widely used on Internet. The future wireless network would be based on IPv6 to provide services for more users. Mobile IPv6 is proposed to remain a device reachable even when the device roams away from one network to another on single-hop wireless networks. Mobile IPv6 is a best-effort services model and QoS solutions for real-time mobile applications are needed. A QoS pre-configure mechanism (QoSPCM) is contributed to guarantee quality of service (QoS) on DiffServ based mobile IPv6 networks. SIP is extended to perform AAA processes and distribute QoS parameters. QoSPCM uses differentiated service (DiffServ) to guarantee QoS on wired backbone. Roaming users can keep communications with QoS guaranteed right after it performed handover. Voice software and DiffServ mobile IPv6 test-bed are implemented to demonstrate the validity of QoSPCM. Experiment results shown that it is necessary to guarantee QoS for real-time applications on crowded networks, and mobile user could get the same QoS guaranteed after it performed handover on QoSPCM