Trends in the development of communication networks: Cognitive networks

One of the main challenges already faced by communication networks is the efficient management of increasing complexity. The recently proposed concept of cognitive network appears as a candidate that can address this issue. In this paper, we survey the existing research work on cognitive networks, a...

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Bibliographic Details
Published in:Computer networks (Amsterdam, Netherlands : 1999) Netherlands : 1999), 2009-06, Vol.53 (9), p.1354-1376
Main Authors: Fortuna, Carolina, Mohorcic, Mihael
Format: Article
Language:English
Subjects:
Artificial intelligence
Autonomic networks
Cognition & reasoning
Cognition loop
Cognitive networks
Communication
Communications networks
Computer architecture
Computer networks
Cross-layer
Knowledge representation
Learning
OSI
Protocol stack
Reasoning
Self-aware
Studies
Trends
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Summary:One of the main challenges already faced by communication networks is the efficient management of increasing complexity. The recently proposed concept of cognitive network appears as a candidate that can address this issue. In this paper, we survey the existing research work on cognitive networks, as well as related and enabling techniques and technologies. We start with identifying the most recent research trends in communication networks and classifying them according to the approach taken towards the traditional layered architecture. In the analysis we focus on two related trends: cross-layer design and cognitive networks. We classify the cognitive networks related work in that mainly concerned with knowledge representation and that predominantly dealing with the cognition loop. We discuss the existing definitions of cognitive networks and, with respect to those, position our understanding of the concept. Next, we provide a summary of artificial intelligence techniques that are potentially suitable for the development of cognitive networks, and map them to the corresponding states of the cognition loop. We summarize and compare seven architectural proposals that comply with the requirements for a cognitive network. We discuss their relative merits and identify some future research challenges before we conclude with an overview of standardization efforts.
ISSN:1389-1286
1872-7069
DOI:10.1016/j.comnet.2009.01.002