@article{He2012a,
abstract = {{\textless}p{\textgreater} Multi-channel Peer-to-Peer (P2P) Video-on-Demand (VoD) systems can be categorized into {\textless}italic{\textgreater}independent-channel{\textless}/italic{\textgreater} P2P VoD systems and {\textless}italic{\textgreater}correlated-channel{\textless}/italic{\textgreater} P2P VoD systems. Streaming capacity for a channel is defined as the maximal streaming rate that can be received by every user of the channel. In this paper, we study the streaming capacity problem in multi-channel P2P VoD systems. In an independent-channel P2P VoD system, there is no resource correlation among channels. Therefore, we can find the average streaming capacity for the independent-channel P2P VoD system by finding the streaming capacity for each individual channel, respectively. We propose a distributed algorithm to solve the streaming capacity problem for a single channel in an independent-channel P2P VoD system. The average streaming capacity for a correlated-channel P2P VoD system depends on both the intra-channel and cross-channel resource allocation. To better utilize the cross-channel resources, we first optimize the server upload allocation among channels to maximize the average streaming capacity and then propose cross-channel helpers to enable cross-channel sharing of peer upload bandwidths. We demonstrate in the simulations that the correlated-channel P2P VoD systems with both intra-channel and cross-channel resource allocation can obtain a higher average streaming capacity compared to the independent-channel P2P VoD systems with only intra-channel resource allocation. {\textless}/p{\textgreater}},
author = {He, Yifeng and Guan, Ling},
doi = {10.1155/2012/807520},
issn = {1687-7578},
journal = {International Journal of Digital Multimedia Broadcasting},
pages = {1--9},
title = {{Improving Streaming Capacity in Multi-Channel P2P VoD Systems via Intra-Channel and Cross-Channel Resource Allocation}},
url = {http://www.hindawi.com/journals/ijdmb/2012/807520/},
volume = {2012},
year = {2012}
}

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In this paper, we study the streaming capacity problem in multi-channel P2P VoD systems. In an independent-channel P2P VoD system, there is no resource correlation among channels. Therefore, we can find the average streaming capacity for the independent-channel P2P VoD system by finding the streaming capacity for each individual channel, respectively. We propose a distributed algorithm to solve the streaming capacity problem for a single channel in an independent-channel P2P VoD system. The average streaming capacity for a correlated-channel P2P VoD system depends on both the intra-channel and cross-channel resource allocation. To better utilize the cross-channel resources, we first optimize the server upload allocation among channels to maximize the average streaming capacity and then propose cross-channel helpers to enable cross-channel sharing of peer upload bandwidths. We demonstrate in the simulations that the correlated-channel P2P VoD systems with both intra-channel and cross-channel resource allocation can obtain a higher average streaming capacity compared to the independent-channel P2P VoD systems with only intra-channel resource allocation. \\textless/p\\textgreater","author":[{"propositions":[],"lastnames":["He"],"firstnames":["Yifeng"],"suffixes":[]},{"propositions":[],"lastnames":["Guan"],"firstnames":["Ling"],"suffixes":[]}],"doi":"10.1155/2012/807520","issn":"1687-7578","journal":"International Journal of Digital Multimedia Broadcasting","pages":"1–9","title":"Improving Streaming Capacity in Multi-Channel P2P VoD Systems via Intra-Channel and Cross-Channel Resource Allocation","url":"http://www.hindawi.com/journals/ijdmb/2012/807520/","volume":"2012","year":"2012","bibtex":"@article{He2012a,\nabstract = {{\\textless}p{\\textgreater} Multi-channel Peer-to-Peer (P2P) Video-on-Demand (VoD) systems can be categorized into {\\textless}italic{\\textgreater}independent-channel{\\textless}/italic{\\textgreater} P2P VoD systems and {\\textless}italic{\\textgreater}correlated-channel{\\textless}/italic{\\textgreater} P2P VoD systems. Streaming capacity for a channel is defined as the maximal streaming rate that can be received by every user of the channel. In this paper, we study the streaming capacity problem in multi-channel P2P VoD systems. In an independent-channel P2P VoD system, there is no resource correlation among channels. Therefore, we can find the average streaming capacity for the independent-channel P2P VoD system by finding the streaming capacity for each individual channel, respectively. We propose a distributed algorithm to solve the streaming capacity problem for a single channel in an independent-channel P2P VoD system. The average streaming capacity for a correlated-channel P2P VoD system depends on both the intra-channel and cross-channel resource allocation. To better utilize the cross-channel resources, we first optimize the server upload allocation among channels to maximize the average streaming capacity and then propose cross-channel helpers to enable cross-channel sharing of peer upload bandwidths. 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