Multimedia Service Management with Virtualized Cache Migration

Abstract

The demand for playing the video with the highest quality possible leads video streaming companies to utilize network-based solutions and server assistance. As being one of the popular technology in video streaming area, HTTP adaptive video streaming systems can benefit from the emerging network technologies such as SDN and NFV. Such multimedia systems require the management of network resources efficiently to be able to provide acceptable service. In this paper, we propose a multimedia service management architecture that focuses on migration one of the most crucial components of such systems, virtualized caches. SDN controller gathers underlay network statistics and based on real-time network condition determines the optimal location for virtual cache and/or migrate it when network conditions change. We focus on hand-off affects the perceptual quality when clients migrate from one cache to another. The proposed approach was evaluated using the Mininet Emulator and its performance was given comparatively. The performance results show that the combination of SAND (Server and Network Assisted DASH) features with the advantage of the NFV-SDN technology can provide good service to its users.

vDANE: Using virtualization for improving video quality with Server and Network Assisted DASH

“…More specifically, we determined the location of the initial vCache as well as the migration time of vCache, 19 and we addressed the main issues related to vCache migration. 20 In this current study, we focus on the problem of vCache placement and migration in a more general form by enhancing our previous studies, which only considered installing one cache on the network. The aim of this study is to find the optimal number of caches, locate more than one cache, and determine their migration times to satisfy end-users QoE.…”

“…As the last step, the controller directs the last group of clients to the new vCache and hence, the hand-off operation is completed without causing those clients to drain their buffer. Details of this cache migration algorithm can be found in Kalan et al 20 F I G U R E 1 2 Requested representations per segments-BellCanada topology…”

“…These parameters are the available bandwidth between the client and the vCaches, and the density of the clients. In our previous work, 19,20 we focused on vCache migration and its effects on different QoE parameters such as average video bitrate and buffer fullness. More specifically, we determined the location of the initial vCache as well as the migration time of vCache, 19 and we addressed the main issues related to vCache migration 20 .…”

“…In our previous work, 19,20 we focused on vCache migration and its effects on different QoE parameters such as average video bitrate and buffer fullness. More specifically, we determined the location of the initial vCache as well as the migration time of vCache, 19 and we addressed the main issues related to vCache migration 20 . In this current study, we focus on the problem of vCache placement and migration in a more general form by enhancing our previous studies, which only considered installing one cache on the network.…”