IPv6-Based Dynamic Quality of Service Control Strategy for Wireless Network.

On the basis of the architecture for fast handover of hierarchical IPv6, a coordinated call admission control mechanism was presented, providing an end-to-end RSVP context transfer for real-time applications to overcome the weakness of the context transfer protocol which cannot meet the need of end-to-end QoS mechanisms because the contexts were only transferred between the previous and new access routers. The mechanism decreased the delay caused by re-initiate QoS signaling from scratch to reestablish QoS forwarding process, and minimized the handover service disruption. The signaling overhead and handover latencies could be reduced by adopting t he fast handover for hierarchical IPv6 architecture. The approach was compared with the re-initiating RSVP signaling to reestablish QoS states using network simulator ns2. The numerical results showed that the scheme has the less latency and packet loss than that of the re-initiating approach. © 2010 ACADEMY PUBLISHER.