A Source-based Congestion Control Policy on IP Network for Real-Time Video Transport
Cai Can-hui · Journal of Huaqiao University · 2008
This paper discusses under IP network environment without quality of service(QoS) guarantee,how to adapt output rate according to the network states by backward channl,in order to realize a source-based real-time video transport control policy.This thesis presents a intelligent rateshaping algorithm nested in the policy control module,to insure that transport bufffer′s output rate matches network bandwidth.This adopts the optimization forward self-adaptive encoding based on Lagrangian cost function,to confirm coding parameter by network bandwidth and buffer states.The simulation experiments indicate this algorithm is highly efficient,because it gets convergence within 10 times and can find better quality point,consequently not only utilizes network resource reasonably,but also results in no network congestion.