Abstract
It is still a challenging task to provide satisfactory quality of experience (QoE) to users by traditional routing mechanism in current public Internet for real-time multimedia services with high bandwidth and strict end-to-end latency constraint. Multipath transmission is a promising way to improve the performance of data delivery, due to its advantage in bandwidth aggregation capacity over multiple paths to speed up high volume transfers between endpoints. However, existing multipath transmission has many disadvantages such as the requirements for end-host support (i.e. the necessary multi-homed network setting, and operating system or upper applications updates of user devices), and blindingly pursuing maximum of transmission throughput. Path allocation and end-to-end transmission control are two important factors affecting the quality of multipath transmission. As an emerging network architecture, software-defined networking (SDN) is flexible, manageable, and responsive to rapid changes in traffic requirements. In this paper, we propose a multipath transport scheme based on SDN with segment routing (SR) which can meet the bandwidth and low end-to-end transmission latency requirements of real-time interactive multimedia services. The centralized SDN controller is extended to allocate multiple disjoint paths meeting bandwidth requirement meanwhile balancing the network load. The proprietary multipath media server (MMS) dynamically controls the assignment between subflows and routing paths to reduce the end-to-end transmission latency and thus improve QoE of end-users. To show the feasibility of our approach, we construct an SDN platform using Mininet. Simulation results show that our approach performs better compared to the conventional approaches in terms of traffic balancing and end-to-end transmission delay.
Highlights
The explosive growth of multimedia services, such as live video streaming, video gaming and virtual reality, calls for efforts to optimize network transmission which can manage the increasing amount of data traffic on future network
We proposed a multipath transport framework based on application-level relay (MPTS-AR) [5], [6], in which both the control plane and the data plane work in application layer and user devices are responsible for multipath management
The contributions of this paper are as follows: 1) We present a promising software defined multipath transmission mechanism (SD-MPT) with segment routing for real-time interactive multimedia service, comprising an softwaredefined networking (SDN) controller with better knowledge and control of available paths, leveraging SR to eliminate the scalability problem faced by SDN network especially with multipath support
Summary
The explosive growth of multimedia services, such as live video streaming, video gaming and virtual reality, calls for efforts to optimize network transmission which can manage the increasing amount of data traffic on future network. From the perspective of service quality, Multipath Media Server (MMS), which are the external traffic sources and destinations, dynamically controls the assignment between subflows and routing paths to minimize the packet disordering and reduce the endto-end transmission latency and improve QoE of end-users. In this way multipath transport is plugged in without any modification to the user devices.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
