NDLI: Cog-Fi: A cognitive Wi-Fi Channel Hopping architecture for urban MANETs

Content Provider	IEEE Xplore Digital Library
Author	Choi, B.S.C. Gerla, M.
Copyright Year	2012
Description	Author affiliation: Computer Science Department, University of California, Los Angeles (Choi, B.S.C.; Gerla, M.)
Abstract	The success of wireless networks has increased the competition for wireless resources in unlicensed bands by a plethora of wireless devices. Mobile devices that operate in the unlicensed band and are not semi-permanently associated with an access point (either residential or business) find it increasingly difficult to compete in the crowded spectrum. An interesting solution is to equip the mobiles with cognitive radios and allow them to identify the set of least occupied channels and hop across them. In our previous work, we have developed the Cognitive Channel Hopping (CCH) protocol, which utilizes a subset of multiple lightly loaded channels, avoiding channels with heavy external interference. While any routing protocol can work with CCH, conventional protocols like DSR and AODV are not well-suited for CCH networks, as they are not designed to work with multiple channels (in the same MANET) and do not take into account other factors that affect the network performance, such as link rates and channel load. In this work, we define a network architecture Cog-Fi, which exploits CCH over multiple channels in MANETs. We devise a routing protocol called CH-LQSR, which further increases the network performance when used in conjunction with CCH. Our evaluation shows that Cog-Fi can exploit channel diversity without explicit coordination. It outperforms conventional approaches in MANET scenarios with multiple flows and heavy external interference.
Starting Page	119
Ending Page	126
File Size	694268
Page Count	8
File Format	PDF
ISBN	9781457717215
e-ISBN	9781457717222
e-ISBN	9781457717208
DOI	10.1109/WONS.2012.6152216
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-01-09
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Measurement IEEE 802.11 Standards Bit error rate Routing Routing protocols Ad hoc networks
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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