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The case for P 2 P Mobile Video System over wireless networks : A practical study of Challenges for a mobile video provider

Mobile video is becoming extremely popular these days and P2P mobile video platforms are considered for large deployment in this context. However, mobile networks have some peculiar characteristics that have to be considered for the design and deployment of realistic P2P mobile video system over a real mobile network. In this article, we take the viewpoint of a large-scale commercial P2P mobile video provider system, PPTV, and describe the challenges to implement a P2P mobile video system over 3G. Our analysis is backed by real measurement and experience from PPTV. We extract from these measurements the characteristics of mobile videos and analyze their impacts on P2P video systems. We also discuss other encountered practical problems in the design of a mobile P2P system for PPTV.