Modelling and analysis of non-cooperative peer-assisted VoD streaming in managed networks
Journal
Multimedia tools and applications
Date Issued
2015-02-18
Author(s)
Jaureguizar, Fernando
Abstract
The growing popularity of the Video on Demand service in the Internet Protocol Television environments and the demand for increased quality
of the offered videos are becoming a serious threat for the service providers
because the high amounts of video traffic are causing congestion in the delivery networks. One of the most acceptable approaches to solve this issue
is the peer-assisted streaming, where the peers participate in the streaming
process in order to alleviate the load on the streaming servers and in the
core of the network. Although the reliability of the Peer-to-Peer service is
considerably improved in the managed networks because of the control that
the operators have over the clients’ Set-Top Boxes, the failures of the peers
still cannot be completely eliminated. The operator can take advantage of the
streaming and storage resources of the clients and use them for peer-assisted
streaming only while they are watching a video, but not after they finish the
streaming session because they may turn off their receiving devices until the
next session. In this chapter, we address the issue of the failures of the peers in
such environments and their influence on the traffic requested from the servers
for providing uninterrupted video experience. For that purpose, we propose a
precise mathematical tool for modelling a peer-assisted system for Video on
Demand streaming in managed networks with non-cooperative peers, which
may decide not to share their resources while they are not active. This tool
calculates the performance of the system taking into consideration large variety of system parameters, including the failure probability and the time the
peers spend until they decide to turn on the STB and join the network. As the results from the simulations verify the correctness of the mathematical model,
we use it to analyse how the failures of the peers are affecting the system’s
performance for different system parameters.
of the offered videos are becoming a serious threat for the service providers
because the high amounts of video traffic are causing congestion in the delivery networks. One of the most acceptable approaches to solve this issue
is the peer-assisted streaming, where the peers participate in the streaming
process in order to alleviate the load on the streaming servers and in the
core of the network. Although the reliability of the Peer-to-Peer service is
considerably improved in the managed networks because of the control that
the operators have over the clients’ Set-Top Boxes, the failures of the peers
still cannot be completely eliminated. The operator can take advantage of the
streaming and storage resources of the clients and use them for peer-assisted
streaming only while they are watching a video, but not after they finish the
streaming session because they may turn off their receiving devices until the
next session. In this chapter, we address the issue of the failures of the peers in
such environments and their influence on the traffic requested from the servers
for providing uninterrupted video experience. For that purpose, we propose a
precise mathematical tool for modelling a peer-assisted system for Video on
Demand streaming in managed networks with non-cooperative peers, which
may decide not to share their resources while they are not active. This tool
calculates the performance of the system taking into consideration large variety of system parameters, including the failure probability and the time the
peers spend until they decide to turn on the STB and join the network. As the results from the simulations verify the correctness of the mathematical model,
we use it to analyse how the failures of the peers are affecting the system’s
performance for different system parameters.
Subjects
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