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AuthorElsaadany M.
AuthorAbdallah M.
AuthorKhattab T.
AuthorKhairy M.
AuthorHasna , Mazen
Available date2022-04-26T11:06:58Z
Publication Date2010
Publication NameGLOBECOM - IEEE Global Telecommunications Conference
ResourceScopus
Identifierhttp://dx.doi.org/10.1109/GLOCOM.2010.5684251
URIhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-79551641364&doi=10.1109%2fGLOCOM.2010.5684251&partnerID=40&md5=87f3fbdafcd680618e64cb4c10ed78c3
URIhttp://hdl.handle.net/10576/30552
AbstractThe anticipated increase in the density of the deployed wireless sensor networks calls for spectrum sharing through unlicensed access to licensed spectrum. The key technology for spectrum sharing in this scenario is cognitive radio networks. Cognitive relaying scenarios, where a cognitive (unlicensed) user provides relaying services to a licensed (primary) user, have been proposed before as a method to increase chances of spectrum white spaces. In this paper, we develop a wireless sensor network framework containing a cognitive user (sensor node), with delay sensitive data and limited power budget. The cognitive user offers relaying capability to the primary traffic when the primary connection fails to deliver. The cognitive user utilizes a scheduling mechanism that grants priority to relayed traffic over its own traffic. In our framework, the cognitive user is allowed to control the volume of the relayed traffic through an admission control parameter. The objective of the sensor node (cognitive user) is to minimize its traffic delay, subject to certain power budget allowed for relaying the primary traffic. Our key contributions in this work are the development of the aforementioned framework, the establishment of a mathematical formalization for this problem, the derivation of mathematical expressions for average power consumption and average packet delay, and the solution for the developed optimization problem by finding a value for the admission control parameter that minimizes delay while satisfying power budget constraints.
Languageen
PublisherIEEE
SubjectAdmission Control
Average packet delays
Average power
Cognitive radio network
Delay sensitive
Key technologies
Mathematical expressions
Optimization problems
Performance analysis
Power budgets
Primary traffic
Scheduling mechanism
Spectrum sharing
Traffic delays
White space
Budget control
Optimization
Sensor nodes
Sensors
Telecommunication
Telecommunication equipment
Wireless networks
Wireless sensor networks
TitleCognitive relaying in wireless sensor networks: Performance analysis and optimization
TypeConference Paper
dc.accessType Abstract Only


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