Towards Low-Latency and Energy-Efficient Hybrid P2P-CDN Live Video Streaming

TL;DR

This paper proposes a hybrid P2P-CDN framework utilizing NFV and edge computing to enhance live video streaming by reducing latency and energy consumption while improving user QoE.

Contribution

It introduces a multi-layer hybrid P2P-CDN architecture with an action tree for resource optimization, integrating NFV and edge computing for scalable live video delivery.

Findings

Improves user Quality of Experience (QoE)

Reduces client serving latency

Enhances edge server energy efficiency

Abstract

Streaming segmented videos over the Hypertext Transfer Protocol (HTTP) is an increasingly popular approach in both live and video-on-demand (VoD) applications. However, designing a scalable and adaptable framework that reduces servers energy consumption and supports low latency and high quality services, particularly for live video streaming scenarios, is still challenging for Over-The-Top (OTT) service providers. To address such challenges, this paper introduces a new hybrid P2P-CDN framework that leverages new networking and computing paradigms, i.e., Network Function Virtualization (NFV) and edge computing for live video streaming. The proposed framework introduces a multi-layer architecture and a tree of possible actions therein (an action tree), taking into account all available resources from peers, edge, and CDN servers to efficiently distribute video fetching and transcoding tasks across a hybrid P2P-CDN network, consequently enhancing the users latency and video quality. We also discuss our testbed designed to validate the framework and compare it with baseline methods. The experimental results indicate that the proposed framework improves user Quality of Experience (QoE), reduces client serving latency, and improves edge server energy consumption compared to baseline approaches.