NDLI: MAC Protocol for Distributed Relay-Assisted Cognitive Radio Networks

Content Provider	IEEE Xplore Digital Library
Author	Xiaokun Fan Jing Liu
Copyright Year	2010
Abstract	Cognitive radio technology can improve spectrum efficiency by allowing potential secondary users (SUs) to use licensed spectrum when primary users (PUs) are absent. How to share and allocate the unoccupied spectrum among SUs directly affects spectrum utilization. Relay-assisted transmitting in cognitive radio networks (CRN) is an effective technology to improve spectrum utilization and increase transmitting range. This paper proposes a MAC protocol for CRN in which relay technology is adopted. According to whether SUs' state messages are transmitted by certain unchangeable available common channel (ACC) in CRN, two kinds of mechanism for data exchanging are presented. We further propose an ACC assignment algorithm in order to increase SUs system's total throughput and decrease interference to other neighboring SUs. Furthermore, we present performance results of our mechanism that applied to a SUs system based on opportunistic spectrum access, which proves the benefits of our mechanism.
Starting Page	1
Ending Page	4
File Size	271763
Page Count	4
File Format	PDF
ISBN	9781424437085
DOI	10.1109/WICOM.2010.5601472
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-09-23
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Schedules Interference Throughput Media Access Protocol Sensors Cognitive radio Relays
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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