Delay-insensitive traffic detection and transfer on network edges

Abstract

Background (BG) traffic generated automatically by applications or the operating system on devices is delay-insensitive traffic as it does not immediately affect user experiences. However, this traffic may significantly contend network resources with foreground (FG) traffic which conveys data/content to users. This contention directly affects the QoS and QoE of network services, specifically at the peak times. This paper proposes an integration approach to which delay-insensitive traffic is quickly detected and effectively transferred in accordance with the network conditions hence the best resources are yielded to FG traffic. For the traffic transferring, we propose two methods namely the router centric (RC) and the SDN-based approaches. In the RC method, the edge routers analyze network conditions, compute the suggested sending rates for individual traffic flows and send these values back to clients where the adjustment mechanisms are implemented. In the SDN-based method the course of actions for each traffic flow is computed by a remote controller. Experimental results reveal the effectiveness and the feasibility of the proposed approaches.