Cross Layer Information in MANETs: Why and How?
Abstract
Traffic carried by wireless networks may be a mix of
real-time traffic such as voice, multimedia, messaging and file transfer and applications on them requires service/resource sharing. Each application will require varying and very diverse QoS guarantees. The cross layer design can potentially solve some of these problems in wireless communication and thus the provisioning of QoS level required by the applications. Layering of MANETs may be violated in
order to implement autonomic behavior such as service provisioning. This cross layering depends on correlating data from various layers to identify major and relevant events related to the application design requirements. We proposed cross layer which lies between the application and the lower layers also it spans across the other layers
vertically. In this paper the mechanism for accessing the cross layer information has been proposed and predictors to predict the event happening based on the collected data. The application or the other layers can access these values and do adaptation to the existing
environment by subscribing to the needed predictors. We designed predictors namely data rate predictor, Bandwidth estimator, and Link qualification. To show case our design the routing algorithm has changed to take in to consideration of the link, and SNR which shows better result.
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