Explicit application-network cross-layer optimisation

Pezaros, D. and Mathy, L. (2008) Explicit application-network cross-layer optimisation. In: The 4th International Telecommunication Networking WorkShop (IT-NEWS) on QoS in Multiservice IP Networks (QoS-IP 2008), Venice, Italy, February 13-15, 2008, (doi: 10.1109/ITNEWS.2008.4488151)

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The emergence of overlay network applications that rely on application-level decisions for many aspects of their operations (e.g. routing, content replication, etc) creates crosslayer interaction issues with ISP network operations. Indeed, the independent optimisation of a diverse set of objectives using layer-local information can lead to operational instability and sub-optimal resource usage. We argue that an explicit interaction between the application and network layers can provide benefits for each layer. We postulate that such cross-layer interaction must however fulfil two conditions to be pragmatic and acceptable: 1) no explicit information about the structure and operations of each layer must be ex-changed; 2) each layer must be able to independently set its own policies and objectives. Because we limit this interaction to application hosts and their access ISP, the proposed method is also incrementally deployable. We show, through evaluation of simple examples, that explicit cross-layer interaction does indeed bring performance benefits to all parties, for applications ranging from simple client-server to more complex overlay network scenarios.

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Pezaros, Professor Dimitrios
Authors: Pezaros, D., and Mathy, L.
Subjects:Q Science > Q Science (General)
College/School:College of Science and Engineering > School of Computing Science
Copyright Holders:Copyright © 2008 IEEE
First Published:First published in IT-NEWS 2008. 4th International Telecommunication Networking Workshop on QoS in Multiservice IP Networks, 2008
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher.
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