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Joint QoS control for video streaming over wireless multihop networks: A cross-layer approach by Liang Zhou; Baoyu Zheng; Benoît Geller; Anne Wei; Jingwu Cui is a Engineering article available to read on EtoBox.

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In this paper, we propose a novel cross-layer framework for jointly controlling and coding for multiple video streams in wireless multihop networks. At first, we develop a cross-layer flow control algorithm that works at the medium access control (MAC) layer to adjust each link's persistence probability and at the transport layer to adjust flow rates. This proposal is designed in a distributed manner that is amenable to online implementation for wireless networks, and then, a rate-distortion optimized joint source-channel coding (JSCC) approach for error-resilient scalable encoded video is presented, in which the video is encoded into multiple independent streams and each stream is assigned forward error correction (FEC) codes to avoid error propagation. Furthermore, we integrate the JSCC with the specific flow control algorithm, which optimally applies the appropriate channel coding rate given the constraints imposed by the transmission rate obtained from the proposed flow control algorithm and the prevailing channel condition. Simulation results demonstrate the merits and the need for joint quality of service (QoS) control in order to provide an efficient solution for video strea

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Author

Liang Zhou; Baoyu Zheng; Benoît Geller; Anne Wei; Jingwu Cui

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 1434-8411)

Published

2009

Language

EN

Field

Engineering (Physical Sciences)