Decentralized Predictive MAC Protocol for Ad Hoc Cognitive Radio Networks

Title
Decentralized Predictive MAC Protocol for Ad Hoc Cognitive Radio Networks
Author(s)
김성원갸넨드라조쉬남승엽
Issue Date
201401
Publisher
SPRINGER
Citation
WIRELESS PERSONAL COMMUNICATIONS, v.74, no.2, pp.803 - 821
Abstract
A new problem of spectrum scarcity has emerged due to the incredible technological advances in wireless communication. The spectrum scarcity issue is a bottleneck for the next generation of wireless communications. Therefore, efficient spectrum utilization has attracted considerable attention. This paper proposes a novel method of utilizing the white spaces in the licensed spectrum while ensuring the incumbent licensees' rights. The protocol predicts the incumbents' arrival using a historical prediction method and protects the incumbent users from the interference of opportunistic spectrum users. Distributed sensing is used to determine the network wide spectrum opportunity. The channel access delay in the proposed protocol is evaluated by simulation and mathematical analysis. The protocol has the advantages of a decentralized system, flexibility and low computing complexity. The simulations show that the protocol outperforms the existing opportunistic spectrum-sharing, media-access-control protocols in terms of the goodput and delay.
URI
http://hdl.handle.net/YU.REPOSITORY/33607http://dx.doi.org/10.1007/s11277-013-1322-6
ISSN
0929-6212
Appears in Collections:
공과대학 > 모바일정보통신공학과 > Articles
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