Scalable and Reliable IPTV Service Through Collaborative Request Dispatching

IPTV has emerged as the future standard of television and drawn enormous attentions from both industry and research communities. Among different IPTV services, on-demand services are the most popular ones due to their convenience and rich content. However, supporting scalable and reliable on-demand IPTV ser-vices remains to be an important challenge. Existing IPTV architecture dedicates a centralized regional station to serve sub-scribers in the respective region regardless of temporal and spatial dynamics in service demand. As a result, it may cause significant imbalance of resource utilization and service provisioning delay at different stations, especially with increasing subscribers and video content.