Implementation evaluation of proactive content caching using DASH-NDN-JS

Abstract

Proactive content caching scheme utilizing transportation systems, especially on trains, was proposed in order to provide a robust content delivery with efficient wireless resource usage. This system requires content servers with NDN capability to be placed on every station and trains. The mechanism is to pre-cache the contents that users request to the station server before the train arrives, and the train server caches the content during its stoppage time. With this mechanism, users are able to have a continuous playback of videos while riding on trains. In this paper, we have proposed a browser-based implementation, called DASH-NDN-JS, for this proactive content caching scheme. We evaluate this scheme, and experiment with multiple users to see how it will affect the video quality each user will achieve and the bandwidth consumption between the connections. Our evaluations conclude that the increase of users lowers the video quality, but avoids congestion depending on what video content each user will want to request.

Proactive Content Caching for Mobile Video Utilizing Transportation Systems and Evaluation Through Field Experiments

“…Similarly, the margin ( β n ) becomes longer as the smart scheduler selects the same DASH representation as Inequality (9). A wise use of cellular connections can also handle flexible users' playback behaviors, in particular, channel zapping, but, this is our future work.…”

“…First, CCNx was replaced with NDNx because the latest CCNx is no longer available as open-source software and the NDN-based prototype written in JavaScript was developed, and we call it DASH-NDN-JS [9]. DASH-NDN-JS integrates DASH-JS and NDN-JS to allow playback of DASH content on web browsers instead of VLC.…”

“…Therefore, we extended our system to work in a fully automatic manner, improve the link utilization, provide robust streaming and performed the second field experiment on a larger scale in February 2015 [31]. We first replaced CCN with Named Data Networking (NDN) [23] because the latest CCNx [8] that is one of implementations of CCN is no longer available as open-source software, and we developed a browser-based implementation written by JavaScript, that we call "DASH-NDN-JS" [9]. Second, we modify the link utilization of DASH-NDN-JS by Interest aggregation and burst Interest transmission.…”

“…In this paper, we summarize series of our contributions to the proactive caching in [5,9,31], and introduces new discussions and considerations based on our previous work. The rest of this paper is organized as follows.…”