Multi-Party WebRTC Services Using Delay and Bandwidth Aware SDN-Assisted IP Multicasting of Scalable Video Over 5G Networks

At present, multi-party WebRTC videoconferencing between peers with heterogenous network resources and terminals is enabled over the best-effort Internet using a central selective forwarding unit (SFU), where each peer sends a scalable encoded video stream to the SFU. This connection model avoids th...

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Bibliographic Details
Published in:IEEE transactions on multimedia 2020-04, Vol.22 (4), p.1005-1015
Main Authors: Kirmizioglu, Riza Arda, Tekalp, A. Murat
Format: Article
Language:English
Subjects:
Bandwidth
Bandwidths
Computer architecture
Consumption
Delay
Delays
Digital media
Finite element method
IP (Internet Protocol)
IP networks
managed service
multi-party WebRTC
Multicast communication
Multicasting
network slicing
Peers
Protocols
Provisioning
scalable video coding
SDN-assisted IP multicast
Servers
Software-defined networking
Streaming media
Switches
Switching theory
Traffic congestion
Video data
Videoconferencing
WebRTC
Wireless networks
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Summary:At present, multi-party WebRTC videoconferencing between peers with heterogenous network resources and terminals is enabled over the best-effort Internet using a central selective forwarding unit (SFU), where each peer sends a scalable encoded video stream to the SFU. This connection model avoids the upload bandwidth bottleneck associated with mesh connections; however, it increases peer delay and overall network load (resource consumption) in addition to requiring investment in servers since all video traffic must go through SFU servers. To this effect, we propose a new multi-party WebRTC service model over future 5G networks, where a video service provider (VSP) collaborates with a network service providers (NSP) to offer an NSP-managed service to stream scalable video layers using software-defined networking (SDN)-assisted Internet protocol (IP) multicasting between peers using NSP infrastructure. In the proposed service model, each peer sends a scalable coded video upstream, which is selectively duplicated and forwarded as layer streams at SDN switches in the network, instead of at a central SFU, in a multi-party WebRTC session managed by multicast trees maintained by the SDN controller. Experimental results show that the proposed SDN-assisted IP multicast service architecture is more efficient than the SFU model in terms of end-to-end service delay and overall network resource consumption, while avoiding peer upload bandwidth bottleneck and distributing traffic more evenly across the network. The proposed architecture enables efficient provisioning of premium managed WebRTC services over bandwidth-reserved SDN slices to provide videoconferencing experience with guaranteed video quality over 5G networks.
ISSN:1520-9210
1941-0077
DOI:10.1109/TMM.2019.2937170