Cross-Layer QoS Control for Video Communications over Wireless Ad Hoc Networks View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2005-12

AUTHORS

Qi Qu, Yong Pei, James W Modestino, Xusheng Tian, Bin Wang

ABSTRACT

Assuming a wireless ad hoc network consisting of homogeneous video users with each of them also serving as a possible relay node for other users, we propose a cross-layer rate-control scheme based on an analytical study of how the effective video transmission rate is affected by the prevailing operating parameters, such as the interference environment, the number of transmission hops to a destination, and the packet loss rate. Furthermore, in order to provide error-resilient video delivery over such wireless ad hoc networks, a cross-layer joint source-channel coding (JSCC) approach, to be used in conjunction with rate-control, is proposed and investigated. This approach attempts to optimally apply the appropriate channel coding rate given the constraints imposed by the effective transmission rate obtained from the proposed rate-control scheme, the allowable real-time video play-out delay, and the prevailing channel conditions. Simulation results are provided which demonstrate the effectiveness of the proposed cross-layer combined rate-control and JSCC approach. More... »

PAGES

412475

Identifiers

URI

http://scigraph.springernature.com/pub.10.1155/wcn.2005.743

DOI

http://dx.doi.org/10.1155/wcn.2005.743

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1011379933


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