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Peer-to-peer networks such as Bit Torrent swarms have gained popularity on Internet. One of the fundamental underlying mechanisms is to foster and enforce peer cooperativeness. As for fairly exchanging Bit Torrent chunks, peers may resort to encrypted chunk exchanges yet at the cost of delayed availability of plain chunks. In response, this paper presents a chunk encryption scheme for exchanging chunks...
In a P2P-based media distribution network (PMDN), content migration is one of the key problems that affect the overall performance of a system. In the system hierarchy, the content migration problem consists of two levels of migration: provider-level migration and user-level migration. In this paper, we focus on the former, provider-level migration, where the goal is to reduce data migration cost...
As a superior approach for peer-to-peer (P2P) streaming live media, mesh-based overlay has made much success due to its potential scalability and ease of deployment. Peers in mesh streaming systems employ a swarming content delivery mechanism to exchange resources. However, the limited availability of new content heavily affects the quality of delivered stream. Aiming at leveraging and optimizing...
Though the existence of a minimum delay peer-to-peer media streaming scheme has been shown (under the name of snowball streaming), no actual algorithm has ever been designed so far, due to the lack of a systematic way to construct the chunk scheduling that achieves the minimum delay bound. Inspired by the growth of interest in building hybrid streaming systems that consist of backbone trees supplemented...
Traditional Peer-to-Peer (P2P) overlay networks are based on distributed peers' query system, which incurs heavy control overhead on P2P overlay networks. In this paper, we present a Transmission Topology Map (TTM) construction algorithm for content owner-oriented P2P content sharing, which can also be considered as 'push-based P2P'. The main feature of the algorithm is that when a content owner disseminates...
The emerging scalable video coding extension in H.264/AVC standard will enable the deployment of video streaming and distribution applications in heterogeneous environments, with different user bandwidth resources and display capacities. In this paper, we study the problem of how to distribute scalable coded media objects from a media distribution server in peer-to-peer based IPTV applications. All...
This paper proposed a new algorithm named GSP-K, which is a peer caching algorithm based on global segment popularity for P2P VoD system. This algorithm evaluates the cache utility of media segment via gathering the statistics of media segment popularity globally, and makes the numbers of a media segment copies in the whole system vary directly with itpsilas cache utility. The simulation experiments...
In P2P system, each peer caches the received data for accessing of other peers. P2P live streaming system audiencepsilas TV-like watching pattern brings unique characteristics for its cache management algorithm. By measuring and studying the cache rejection algorithm used in PPLive with our PPLive crawler, we found a simple but interesting cache rejection algorithm used in PPLive, i.e. the cache rejection...
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