Prefix based Chaining Scheme for Streaming Popular Videos using Proxy servers in VoD

TL;DR

This paper presents a proxy server cluster architecture using prefix caching and chaining techniques to improve streaming efficiency and reduce network resource consumption for high-quality video delivery over the internet.

Contribution

It introduces a novel prefix caching and cooperative chaining scheme that enhances network efficiency and reduces server load in VoD streaming.

Findings

Reduces WAN bandwidth usage significantly

Decreases server load and client rejection ratio

Improves QoS in video streaming

Abstract

Streaming high quality videos consumes significantly large amount of network resources. In this context request to service delay, network traffic, congestion and server overloading are the main parameters to be considered in video streaming over the internet that effect the quality of service (QoS). In this paper, we propose an efficient architecture as a cluster of proxy servers and clients that uses a peer to peer (P2P) approach to cooperatively stream the video using chaining technique. We consider the following two key issues in the proposed architecture (1) Prefix caching technique to accommodate more number of videos close to client (2) Cooperative client and proxy chaining to achieve the network efficiency. Our simulation results shows that the proposed approach yields a prefix caching close to the optimal solution minimizing WAN bandwidth usage on server-proxy path by utilizing the proxy-client and client-client path bandwidth, which is much cheaper than the expensive server proxy path bandwidth, server load, and client rejection ratio significantly using chaining.