Efficient data replication for the delivery of high-quality video content over P2P VoD advertising networks

EURASIP Journal on Advances in Signal Processing Efficient data replication for the delivery of high- quality video content over P2P VoD advertising networks Chien-Peng Ho 0 Jen-Yu Yu Suh-Yin Lee 0 0 Department of Computer Science, National Chiao Tung University , Hsinchu , Taiwan, R.O.C Recent advances in modern television systems have had profound consequences for the scalability, stability, and quality of transmitted digital data signals. This is of particular significance for peer-to-peer (P2P) video-on-demand (VoD) related platforms, faced with an immediate and growing demand for reliable service delivery. In response to demands for high-quality video, the key objectives in the construction of the proposed framework were user satisfaction with perceived video quality and the effective utilization of available resources on P2P VoD networks. This study developed a peer-based promoter to support online advertising in P2P VoD networks based on an estimation of video distortion prior to the replication of data stream chunks. The proposed technology enables the recovery of lost video using replicated stream chunks in real time. Load balance is achieved by adjusting the replication level of each candidate group according to the degree-of-distortion, thereby enabling a significant reduction in server load and increased scalability in the P2P VoD system. This approach also promotes the use of advertising as an efficient tool for commercial promotion. Results indicate that the proposed system efficiently satisfies the given fault tolerances. overlay networks; peer-to-peer systems; video-on-demand; replication; Internet advertising 1. Introduction Recent advances in online advertising and peer-to-peer (P2P) video-on-demand (VoD) networks, enabling peers to watch or download internet video clips on demand, have created considerable interest in the construction of integrated frameworks. Online advertising channels, such as online newspapers/magazines, keyword trigger tools, and e-mail, have gained wide public acceptance and considerable importance as advertising media [1,2]. However, an increasing number of internet content providers, such as Blinkx BBTV [3], Joost [4], and Livestation [5], are incorporating legal P2P technologies into their delivery platform to reduce operational expenses. In P2P VoD applications, user preferences can be automatically derived from media usage data without the need for direct user input, making them an excellent system for the collection of customer information. This enables advertisers to bid on video clips relevant to their target market. For instance, a toy or a snack advertisement might link to cartoon videos. Hence, a concomitant need has arisen for the delivery of marketing messages to attract customers to the P2P VoD environments [6]. A P2P VoD computing environment can be an ideal platform on which to display advertisements. Perceptions of high video quality and a robust environment are essential for the delivery of online advertising in P2P VoD networks; therefore, this study attempts to make a system that is tolerant of network errors in terms of video enhancement and online P2P advertising availability. There are many ways to enable efficient and scalable on-demand video distribution over networks, including IP multicast, content distribution networks (CDN), and P2P networking. Although IP multicast is an efficient approach for a number of channels with high popularity rankings [7], it has several drawbacks. First, IP multicast has not been widely deployed on the internet [8]. Second, core network routers must process a considerable number of forwarding entries when many active multicast groups are used, resulting in increased memory requirements and slower forward processing. Third, IP multicast flow aggregation is not well suited to less popular video channels (e.g., if many disjoint paths are involved) [7]. In contrast, P2P VoD technologies have gained immense popularity throughout the world [9-12]. P2P VoD services are fundamentally more scalable than existing IP multicast methods when bandwidth availability exists at the ISP backbone. The advantages of using P2P VoD technologies for content distribution over CDN or IP multicast are listed below: Exploitation of the underutilized resources of peers: Some resource owners (resourceful peers) can become providers by making their underutilized resources available. Peers can be frequently switched or reconnected to resourceful peers, and all shared data and services are accessible to other peers. System deployability: A set of incrementally deployable and extensible solutions bring existing P2P systems closer to commercial production, and many have been introduced in recent years. Hardware economics: Traditional CDNs combine the infrastructure for content-delivery, request-routing, distribution, and accounting to provide an intermediate layer of infrastructure to rapidly deliver content from providers to end user (...truncated)