NDLI: L-CSMA: A MAC Protocol for Multihop Linear Wireless (Sensor) Networks

Content Provider	IEEE Xplore Digital Library
Author	Buratti, C. Verdone, R.
Copyright Year	1967
Abstract	We consider a multihop wireless linear network where multiple nodes are evenly spaced over a straight line. Two scenarios are addressed: a network where only one source generates traffic to be transmitted via multiple hops to the destination and the case of linear sensor networks where all nodes in the line generate data. A novel contention-based medium access control (MAC) protocol, called L-CSMA, specifically devised for linear topologies, is proposed. Carrier-sensing multiple access (CSMA) suffers from the well-known hidden/exposed-node problems: The scope of L-CSMA is to reduce their impact, while minimizing the protocol overhead. L-CSMA assigns different levels of priority to nodes, depending on their positions in the line: Nodes closer to the destination have higher priority when accessing the channel. The priority is managed by assigning to nodes different durations of the carrier-sensing phase. This mechanism speeds up the transmission of packets that are already in the path, making the transmission flow more efficient. Results show that L-CSMA outperforms existing contention-based MAC protocols. A mathematical model to derive the performance in terms of packet success probability and throughput is provided. The key idea of the model is the definition of the generic state at the network level, instead of the node level, and its representation through a set of bits indicating the status (activity or not) of the corresponding link. The model is validated through comparison with simulations.
Sponsorship	IEEE Vehicular Technology Society
Starting Page	251
Ending Page	265
Page Count	15
File Size	1278091
File Format	PDF
ISSN	00189545
Volume Number	65
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2016-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sensors Relays Multiaccess communication Throughput Mathematical model Media Access Protocol wireless sensor networks CSMA linear networks MAC protocols mathematical modelling multihop
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Automotive Engineering Computer Networks and Communications Electrical and Electronic Engineering Aerospace Engineering

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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