Applying over-provisioning centric resource control in context-sensitive networks

Mobile users are increasingly demanding multimedia content created specifically or at least tailored to cater for their needs and preferences. In this scope, context-sensitive networking embeds promising technologies for allowing the design of personalized multiparty service applications. The Context Casting (C-CAST) project designed context-sensitive network architecture to support personalized multiparty sessions with Quality of Service (QoS) guaranteed towards multiple users simultaneously, and in their wireless technologies. However, the per-flow driven signalling approach of Legacy C-CAST introduces performance penalties since the signalling load exponentially increases with the number of flow admissions. Thus, this paper proposes the Advanced C-CAST, which re-architects Legacy C-CAST to support over-provisioning of per-class bandwidth and overlay trees. The evaluation of Advanced C-CAST demonstrate its benefits against Legacy C-CAST by optimizing overall signalling load while keeping users with best quality perception in terms of delay and jitter experience.