scispace - formally typeset
Search or ask a question
Topic

Cognitive network

About: Cognitive network is a research topic. Over the lifetime, 4213 publications have been published within this topic receiving 107093 citations.


Papers
More filters
Proceedings ArticleDOI
22 Jul 2015
TL;DR: The architecture for cognitive manufacturing system employing benefits of Industrial Internet and Cognitive Control is proposed, enabling new level of adaptability and re-configurability in the system by self-X capabilities.
Abstract: Considering constantly increasing demand for shift from mass production to mass customization and the need to maintain high level of automation despite permanent changes in manufacturing technologies and tools new approaches and solutions have to be provided in manufacturing. Cyber-Physical Systems and Industrial Internet of Things are enabling smart manufacturing to tackle the challenge of data processing, integration and interpretation, but beyond uniformed data collection and visualization. The cognitive approach is argued to introduce brain and biologically-inspired algorithms capable to better adapt industrial systems for unforeseen conditions. Such approach should provide flexible and robust solution for manufacturing systems, enabling new level of adaptability and re-configurability in the system by self-X capabilities. In this paper contemporary solutions applicable for introduction of cognitive capabilities in manufacturing systems are studied and the architecture for cognitive manufacturing system employing benefits of Industrial Internet and Cognitive Control is proposed.

49 citations

Journal ArticleDOI
TL;DR: It is shown that due to the high cost of maintaining network knowledge for highly dynamic networks, the cost/performance tradeoff makes it advantageous for radios to operate under some degree of local knowledge, rather than global knowledge.
Abstract: In a cognitive network, autonomous and adaptive radios select their operating parameters to achieve individual and network-wide goals. The effectiveness of these adaptations depends on the amount of knowledge about the state of the network that is available to the radios. We examine the price of ignorance in topology control in a cognitive network with power- and spectral-efficiency objectives. We propose distributed algorithms that, if radios possess global knowledge, minimize both the maximum transmit power and the spectral footprint of the network. We show that while local (as opposed to global) knowledge has little effect on the maximum transmission power used by the network, it has a significant effect on the spectral performance. Furthermore, we show that due to the high cost of maintaining network knowledge for highly dynamic networks, the cost/performance tradeoff makes it advantageous for radios to operate under some degree of local knowledge, rather than global knowledge.We also propose distributed algorithms for power and frequency adaptations as radios join or leave the network, and assess how partial knowledge impacts the performance of these adaptations.

49 citations

Journal ArticleDOI
TL;DR: The problems encountered in packet transportation are identified and strategies to resolve these are proposed and a single-hop network in which no packet routing is involved is proposed.
Abstract: Packet-switching broadcast radio networks are receiving considerable attention as a feasible solution for applications involving fast network deployment requirements, inaccessible physical environments, and mobile communication devices. Such networks also offer economic alternatives to traditional multiplexing schemes for local distribution. Most of the published papers relating to packet-switching broadcast radio networks address the case in which all communication devices are within an effective transmission range of the destination receiver, thus forming a single-hop network in which no packet routing is involved. In this paper, we address multihop networks. The problems encountered in packet transportation are identified and strategies to resolve these are proposed.

48 citations

Journal ArticleDOI
P.F. Marshall1
14 Apr 2009
TL;DR: The large-scale Defense Advanced Research Projects Agency efforts to further develop and exploit dynamic spectrum access, and initiate development and operational use of cognitive networking and a new generation of affordable wireless technology are described.
Abstract: There has been significant research progress reported over the last few years in the development of cognitive radio technologies. This paper reviews some of these results, describes several critical issues to integrate these results in usable products, and describes the large-scale Defense Advanced Research Projects Agency efforts to further develop and exploit dynamic spectrum access, and initiate development and operational use of cognitive networking and a new generation of affordable wireless technology. This paper also describes future research needs to fully exploit cognitive radio technology and addresses the challenges that will arise with its large-scale deployment.

48 citations

Proceedings ArticleDOI
26 Apr 2009
TL;DR: In this paper, the authors proposed a framework for providing common control channel security for co-operatively communicating cognitive radio nodes, in which two cognitive radios can authenticate each other prior to any confidential channel negotiations to ensure subsequent security against attacks.
Abstract: Cognitive radio networks are becoming an increasingly important part of the wireless networking landscape due to the ever-increasing scarcity of spectrum resources. Such networks perform co-operative spectrum sensing to find white spaces and apply policies to determine when and in which bands they may communicate. In a typical MAC protocol designed for cooperatively communicating ad hoc cognitive radio networks, nodes make use of a common control channel to perform channel negotiations before any actual data transmission. The provision of common control channel security is vital to ensure any subsequent security among the communicating cognitive radio nodes. To date, wireless security has received little attention in cognitive radio networks research. The cognitive radio paradigm introduces entirely new classes of security threats and challenges, such as selfish misbehaviours, licensed user emulation and eavesdropping. This paper presents a novel framework for providing common control channel security for co-operatively communicating cognitive radio nodes. To the best of the authors' knowledge, this is the first paper which proposes such a concept. The paper investigates how two cognitive radio nodes can authenticate each other prior to any confidential channel negotiations to ensure subsequent security against attacks. The paper also describes the importance of common control channel security and concludes with future work describing the realization of the proposed framework.

47 citations


Network Information
Related Topics (5)
Wireless network
122.5K papers, 2.1M citations
90% related
Network packet
159.7K papers, 2.2M citations
88% related
Wireless ad hoc network
49K papers, 1.1M citations
88% related
Wireless
133.4K papers, 1.9M citations
87% related
Key distribution in wireless sensor networks
59.2K papers, 1.2M citations
86% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202317
202234
202175
2020104
2019121
2018134