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The Computer Journal Advance Access published online on June 5, 2009
The Computer Journal, doi:10.1093/comjnl/bxp053
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© The Author 2009. Published by Oxford University Press on behalf of The British Computer Society. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

The Cognitive Packet Network: A Survey

Georgia Sakellari*

Intelligent Systems and Networks Group, Department of Electrical and Electronic Engineering, Imperial College London, London SW7 2BT UK

* Corresponding author: g.sakellari{at}imperial.ac.uk

Received 10 October 2008; revised 7 May 2009

Current and future multimedia networks require connections under specific quality of service (QoS) constraints which can no longer be provided by the best-effort Internet. Therefore, ‘smarter’ networks have been proposed in order to cover this need. The cognitive packet network (CPN) is a routing protocol that provides QoS-driven routing and performs self-improvement in a distributed manner, by learning from the experience of special packets, which gather on-line QoS measurements and discover new routes. The CPN was first introduced in 1999 and has been used in several applications since then. Here we provide a comprehensive survey of its variations, applications and experimental performance evaluations.

Key Words: cognitive packet networks • random neural network • quality of service • routing protocol • self-aware networks

Handling editor: Taskin Kocak


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