NDLI: Location Aware CR-MAC: A multi-channel cross layered PHY-MAC protocol for cognitive radio ad hoc networks

Content Provider	IEEE Xplore Digital Library
Author	Jalaeian, B. Motani, M.
Copyright Year	2009
Description	Author affiliation: Department of Electrical and Computer Engineering, National University of Singapore, Singapore (Jalaeian, B.; Motani, M.)
Abstract	In this paper, we show that the aggregate network throughput of a cognitive radio network can be significantly increased by using primary transmitter location sensing in addition to conventional spectrum sensing . To achieve this, we propose a novel multi-channel, cross-layer PHY-MAC protocol for CR ad hoc networks, which infers concurrent transmission opportunities from location sensing information. We identify four main problems and provide solutions which enable our location aware MAC. First, secondary nodes achieve location information without any interaction with primary nodes by combining RSSI and direction of arrival information (estimated from an antenna array). The location sensing capability can be integrated into the sensing module which also performs conventional channel sensing. Second, a distributed collaborative sensing algorithm is developed based on sensing module information which broadens nodes' knowledge of locations and spectrum occupancy. Third, a simple condition is proposed to control interference on primary network. Fourth, a decentralized scheduling scheme is presented to solve the MAC problem for location aware cognitive radio networks, in which channels are allocated to nodes based on their locations. Simulations show that the proposed approach significantly increases the performance of the CR network. The influence of protocol parameters on network performance is also investigated.
Starting Page	348
Ending Page	353
File Size	834229
Page Count	6
File Format	PDF
ISBN	9781424455317
e-ISBN	9781424455331
DOI	10.1109/MICC.2009.5431528
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-12-15
Publisher Place	Malaysia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Protocols Aggregates Radio transmitters Chromium Directive antennas Throughput Ad hoc networks Cognitive radio Direction of arrival estimation Antenna arrays
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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