A QoS-Based Scheduling Mechanism for Overlay Aggregate Traffics

This paper presents a control mechanism in SON(Service Overlay Network) architecture to provide delay guarantees of different aggregate traffics over IP network. In addition to the bandwidth provision problem of aggregate-traffic in service overlay network, queuing delay in the service gateway is another critical QoS parameter, and diverse multimedia flows have different delay requirements. To assure the delay requirements of aggregate flows in service overlay network, we present a simple but effective adaptable control mechanism, which consists of two-queues with exhausitive service in cyclic order and characterizes the abilities to ensure delay requirements of various aggregate flows according to their burstiness. Moreover, Associated performance is analyzed by the Markov chain and probability generation function, and simulations validate this analysis.