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Proxy‐assisted P2P and multicast transmission schemes for layered‐video streaming over wireless networks
Author(s) -
Kao YungCheng,
Lee ChungNan
Publication year - 2009
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.1089
Subject(s) - computer science , computer network , multicast , cache , proxy server , base station , proxy (statistics) , wireless network , transmission (telecommunications) , wireless , telecommunications , machine learning
This work describes the process of efficiently streaming a set of layered‐videos from a remote server via proxy of the base station to multiple heterogeneous and asynchronous clients in wireless networks, such as the WiMAX network, which are devices that request different layers of the video according to their profiles. The process focuses on that the transmission cost savings for caching X layers of a video are not only from requests on X layers, but also from requests on layers that are lower than X layers. A set of proxy‐assisted transmission schemes are proposed for layered‐video streaming by integrating the proxy caching with reactive transmission schemes, peer‐to‐peer mesh networks and base station multicast capability. The optimal proxy prefix cache allocation is calculated for each transmission scheme to identify the cache layer and cache length of each video to minimize the aggregate transmission cost. Experimental results demonstrate that an adaptive proxy‐assisted transmission scheme can lead to significant transmission cost savings. Copyright © 2009 John Wiley & Sons, Ltd.