Abstract
5G networks are set to empower new user experiences for multimedia streaming services by offering high data rates and low latency. The rapid growth of multimedia services, such as video streaming services over future softwarized 5G networks, poses great challenges for both service providers and network operators regarding service provisioning with high Quality of Experience (QoE). Network evolution towards Software Defined Networking (SDN) and Network Function Virtualization (NFV) provides new opportunities to develop innovative ways to address the challenges. In this paper, we present a novel QoE-aware management scheme based on SDN/NFV by utilizing Multi-Path-TCP/Segment-Routing (MPTCP/SR) techniques and exploring information from both the network and client. The new scheme, entitled QoEMultiSDN, provides an optimized end-to-end QoE for multimedia service delivery. QoEMultiSDN employs two novel strategies to achieve this: (a) QoE-based multisource routing and QoE optimization, and (b) multipath protection and dynamic link-failure-free mechanisms. We implemented the proposed scheme over SDN through Dynamic Adaptive Streaming over HTTP (DASH) experiments using Mininet, POX and OpenDaylight controllers, and compared its performance with MPTCP and regular TCP. Experimental results indicate that the QoEMultiSDN outperforms others in terms of system throughput, failure recovery time and the QoE of the end-user.
Highlights
The consumption of multimedia services has increased considerably over the past few years and this is expected to grow further in the coming years [1]
QOE CONTROL AND MANAGEMENT PLANE The Quality of Experience (QoE) control and management plane consists of an Software Defined Networking (SDN) controller which integrates the following modules that we extended in the POX controller in our implementations: the Multi-Path Transmission Control Protocol (MPTCP) module, QoE-management and the Traffic Engineering (TE)-Segment routing module
For our proposed multipath protection and link failure recovery Algorithm 2 that we propose in this paper, the SDN controller is implemented as an extension to POX and OpenDaylight controllers
Summary
The consumption of multimedia services has increased considerably over the past few years and this is expected to grow further in the coming years [1]. It is important to note that, some of these approaches do not consider the aspect of improving the end-user’s video quality in real-time video transmissions These works lead to increased overhead and the deployment cost because of relying on installing a large number of flow rules in SDN switches. B. TRAFFIC ENGINEERING WITH SEGMENT ROUTING IN SDN SR is a source routing approach that provides an advanced packet forwarding mechanism where intermediate nodes (routers/switches) are not required to install flow rules or maintain all steered paths within the network. Path protection and dynamic network recovery from failure is an important aspect of QoE control and management in SDN/NFV networks This is so because network failures (due to a failed link or node) directly affect transmission quality and ability of service providers to meet their Experience Level Agreements (ELAs). The segment list can be used for video transmission from source to destination
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