NDLI: E-SPAN: enhanced-SPAN with directional antenna

Content Provider	IEEE Xplore Digital Library
Author	Kumar, V. Arunan, T. Balakrishnan, N.
Copyright Year	2003
Description	Author affiliation: SuperComputer Educ. & Res. Centre, Indian Inst. of Sci., Bangalore, India (Kumar, V.; Arunan, T.; Balakrishnan, N.)
Abstract	A mobile ad-hoc network (MANET), also referred as independent basic service set (IBSS), has nodes which not only send/receive packets associated with them but also co-operate in forwarding data and control packets for the network. Efficient use of energy by the mobile nodes is very important to increase the lifetime of a MANET. Since nodes seldom have packets to receive, they remain in idle mode for long periods of time, which causes a lot of energy drain. Coordination algorithms reduce the time a node is in the idle mode by keeping it in sleep mode as much as possible while coordinators buffer packets for these sleeping nodes. For a given transmit energy, a directional antenna has larger transmit range as compared to an omni-directional antenna. This feature of directional antennas can be used in protocols which assume a sparse network. We have chosen SPAN (Benjie, C. et al., ACM Wireless Networks Journal, vol.8, no.5, 2002) to validate our claim. SPAN is a protocol which elects a sparse network (i.e. backbone) of coordinators to buffer packets for sleeping nodes. Enhanced SPAN (E-SPAN) is SPAN modified to use a directional antenna. Simulations prove the effectiveness of the directional antenna and show that E-SPAN reduces the average power consumed by the nodes in the network by about 20%.
Sponsorship	IEEE Region 10
Starting Page	675
Ending Page	679
File Size	313005
Page Count	5
File Format	PDF
ISBN	0780381629
DOI	10.1109/TENCON.2003.1273261
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-10-15
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Directional antennas Mobile ad hoc networks Protocols Switches Nominations and elections Supercomputers Directive antennas Transmitting antennas Spine Network interfaces
Content Type	Text
Resource Type	Article

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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
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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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