Cognitive networks-英文文献.pdf

Cognitive Networks Ryan W. Thomas, Luiz A. DaSilva, Allen B. MacKenzie The Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA email: {rwthomas, ldasilva, mackenab}@vt.edu Abstract— This paper presents a definition and framework for packets [20] and cognitive networks [11], [18]. There does not a novel type of adaptive data network: the cognitive network. seem to be a common, accepted definition of what these terms In a cognitive network, the collection of elements that make mean when applied to a networking technology. The common up the network observes network conditions and then, using prior knowledge gained from previous interactions with the aspect in the terms mentioned above is the implication that the network, plans, decides and acts on this information. Cognitive technology has the ability to self-modify. We argue, however, networks are different from other “intelligent” communication that a cognitive network goes beyond the use of self-modifying technologies because these actions are taken with respect to the technology. end-to-end goals of a data flow. In addition to the cognitive Cognitive networks have been mentioned in forward- aspects of the network, a specification language is needed to translate the user’s end-to-end goals into a form understandable looking papers before. Mitola makes brief mention of how his by the cognitive process. The cognitive network also depends on a cognitive radios could interact within the system-level scope of Software Adaptable Network that has both an external interface a cognitive network [12]. Saracco refers to cognitive networks