Topology-aware and local load-balancing application layer for multicast schemes
Chongrong Li · Journal of Tsinghua University(Science and Technology) · 2009
The application layer multicast(ALM) scheme is suitable for large live media file distribution.A two-level hierarchal ALM scheme was developed to improve peer load-balancing in heterogeneous networks and decrease the overlay transmission latency.Locality-awareness was used to reduce the overlay delay through peers clustering according to the peer network distances in the overlay networks.Peers in one cluster were self-organized into a local load-balancing overlay based on an expected fitness based preferential random walk.Experiments on CERNET(China education and research network) verify the effectiveness of the peer clustering scheme.Simulations show that the system provides better load-balancing performance than existing systems with a O(lgN) step length random walk.