Abstract
In this article, we present a simple cross-layer model that leads to the optimal throughput of multiple users for multicasting MPEG-4 video over a heterogeneous network. For heterogeneous wired-to-wireless network, at the last wireless hop there are bit errors associated with the link-layer packets that are arising in the wireless channel, in addition of overflow packet dropping over wired links. We employ a heuristic TCP function to optimize the cross-layer model of data link and physical (radio-link) layer. An adaptive Forward-Error-Correction (FEC) scheme is applied at the byte-level as well as at the packet-level. The corresponding optimal video quality can be evaluated at each client end. The results show that a server can significantly adapt to the bandwidth and FEC codes to maximize the video quality of service (QoS) in terms of temporal scaling when a maximum network throughputfor each client is reached. [Article copies are available for purchase from InfoSci-on-Demand.com]
Original language | English |
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Pages (from-to) | 53-69 |
Number of pages | 17 |
Journal | International Journal of Mobile Computing and Multimedia Communications |
Volume | 1 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2009 |