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CLC number: TP393; TN919.8

On-line Access: 2016-07-05

Received: 2016-03-14

Revision Accepted: 2016-06-19

Crosschecked: 2016-06-25

Cited: 1

Clicked: 6428

Citations:  Bibtex RefMan EndNote GB/T7714


En-zhong Yang


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Frontiers of Information Technology & Electronic Engineering  2016 Vol.17 No.7 P.672-681


A video conferencing system based on SDN-enabled SVC multicast

Author(s):  En-zhong Yang, Lin-kai Zhang, Zhen Yao, Jian Yang

Affiliation(s):  School of Information Science and Technology, University of Science and Technology of China, Hefei 230001, China

Corresponding email(s):   ezhyang@mail.ustc.edu.cn, pkpk8@mail.ustc.edu.cn, yaozhen1@mail.ustc.edu.cn, jianyang@ustc.edu.cn

Key Words:  Software-defined networking (SDN), Multicast, Scalable video coding, Video conferencing system

En-zhong Yang, Lin-kai Zhang, Zhen Yao, Jian Yang. A video conferencing system based on SDN-enabled SVC multicast[J]. Frontiers of Information Technology & Electronic Engineering, 2016, 17(7): 672-681.

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Current typical video conferencing connection is bridged by a multipoint control unit (MCU), which may cause large delay and communication bottleneck for the whole system. With the development of network technology, a video conferencing system can be implemented based on software-defined networking (SDN), which makes the service controllable and improves the scalability and flexibility. Additionally, a video encoding method called scalable video coding (SVC) can also help. In this paper, we propose a video conferencing architecture based on SDN-enabled SVC multicasting, which discards the traditional Internet group management protocol (IGMP) and MCU. The system implements SVC multicast streaming to satisfy different device capabilities of various conference terminals. The SDN controller is responsible for dynamically managing and controlling the layers of a video stream when a conference member faces network congestion. Also, a conference manager is designed to facilitate the management of the conference members. Experimental results show that our system can not only provide a flexible and controllable video delivery, but also reduce the network usage while guaranteeing the quality of service (QoS) of video conferencing.




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