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Fuzzy Based PC-PUSH in CR-MANETs
Joint Authors
Nejatian, S.
Syed Yusof, S. K.
Abdul Lattif, N. M.
Rezaie, V.
Asadpour, V.
Source
Mathematical Problems in Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-11-25
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
In cognitive radio (CR), the secondary user (SU) needs to hand off its ongoing communication to an idle channel in order to avoid interference to the primary user (PU).
Spectrum hand off issue becomes challenging in CR mobile ad hoc networks (CR-MANETs) because of the uncertainty in spectrum availability, broad range of spectrum bands and lack of central entity.
The purpose of this study is to design a unified spectrum handoff (USH) scheme for CR-MANETs that considers the spectrum heterogeneity and its availability over time and space.
A local flow hand off is performed when spectrum hand off cannot be carried out due to the SUs mobility.
To improve further USH, preemptive unified spectrum handoff (PUSH) algorithm is proposed in which two different preemptive hand off threshold regions are defined.
The PUSH algorithm also predicts the cognitive link availability considering the PU interference boundary.
Although the PUSH scheme improves the hand off performance, the number of spectrum hand offs due to the PU activity should be reduced in this scheme.
Therefore, the PC-PUSH (Power Controller-PUSH) scheme is proposed in which the fuzzy logic is used to improve the PUSH in terms of the number of spectrum handoffs because of the PU activity.
The PC-PUSH decreases the interference to the PUs, while reducing the number of spectrum handoffs.
The results show that the proposed scheme improves the link maintenance probability, decreases the hand off delay, and reduces the number of spectrum handoffs.
American Psychological Association (APA)
Nejatian, S.& Syed Yusof, S. K.& Abdul Lattif, N. M.& Rezaie, V.& Asadpour, V.. 2014. Fuzzy Based PC-PUSH in CR-MANETs. Mathematical Problems in Engineering،Vol. 2014, no. 2014, pp.1-15.
https://search.emarefa.net/detail/BIM-1046550
Modern Language Association (MLA)
Nejatian, S.…[et al.]. Fuzzy Based PC-PUSH in CR-MANETs. Mathematical Problems in Engineering No. 2014 (2014), pp.1-15.
https://search.emarefa.net/detail/BIM-1046550
American Medical Association (AMA)
Nejatian, S.& Syed Yusof, S. K.& Abdul Lattif, N. M.& Rezaie, V.& Asadpour, V.. Fuzzy Based PC-PUSH in CR-MANETs. Mathematical Problems in Engineering. 2014. Vol. 2014, no. 2014, pp.1-15.
https://search.emarefa.net/detail/BIM-1046550
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1046550