ABSTRACT
Contents 4.1 Background .................................................................................................................... 119 4.2 Recent Trends in Internet Traffic Burst .......................................................................... 124 4.3 Future Internet Initiatives: One Goal, Different Visions ................................................ 125 4.4 Existing P2P VoD Schemes: Do ey Fit Future Internet Initiatives? ............................ 127 4.5 Overview of Peer-Assisted VoD Systems ......................................................................... 127 4.6 How to Improve P2P-Based VoD Schemes: A Case Study to Fit the Need of Future
Internet .......................................................................................................................... 130 4.7 Conclusion ..................................................................................................................... 133 References ............................................................................................................................... 133
Let us ask ourselves for the reason behind this groundswell in video traffic. As the prime reason of this surge in video traffic, we may certainly point fingers at the vast improvement in both access and core network technologies and the deployment of fiber optical communication networks. Advances in wide-band access networks and their large-scale deployment are promising data delivery at a remarkable pace. Even the simplest of Internet users would attest to this. Ask anyone who used the Internet a decade ago. e painfully slow dialing-up days to connect to the Internet are certainly over, the dial-up modems are almost extinct, too-perhaps our kids and grandkids would enjoy knowing about them in a museum or an archive. Unlike the early days of a staggeringly slow Internet, today’s Internet users do not restrict themselves to only web browsing and text/image data transfer. Instead, they usually enjoy and share a wide variety of multimedia services, including audio and video streaming. As the resources and technologies to deliver multimedia contents continue to evolve toward 40/100 Gb networks [2], multimedia content distribution techniques also need to evolve significantly. is necessity arises from the tremendous pressure of meeting the quality-ofexperience (QoE) requirements of the users who subscribe to these services. Many of you, perhaps, have heard of the term “quality of service,” which is simply dubbed as “QoS.” QoE is a similar term for multimedia content delivery. Put yourself in a user’s shoe. en, answer the following questions: When you want to watch a video content on your device of choice (which may range from a personal computer to a laptop, to a smartphone or a tablet device), how fast could the software or application load the video? When you watch the video, does it play smoothly or does it break while playing? In the latter case, how often does the video freeze? At the end, how satisfied or happy were you with the experience of availing of this service? QoE gives a measure to this level of satisfaction. As the multimedia industry continues to grow with millions of wireless and mobile devices and tons of apps, it is becoming ever so difficult to satisfy the QoE of most of the-let alone all-customers.
