NDLI: On improving the TCP performance in asymmetric wireless mesh networks

Content Provider	IEEE Xplore Digital Library
Author	Rai, I.A. Hellen, T.
Copyright Year	2011
Description	Author affiliation: Faculty of Computing and IT, Makerere University, Kampala Uganda (Rai, I.A.; Hellen, T.)
Abstract	A wireless network with multi-hop wireless links is called a wireless mesh network (WMN). WMNs have so many advantages over conventional wireless networks and can be used for various applications. Specifically, WMNs can provide quick and cost-effective Internet connectivity where conventional wired networks impossible to be rolled out. The major disadvantage WMNs however stems from the fact that wireless links' rate is highly affected by physical and environmental conditions which can lead to unpredictable data transmission errors. Changes in environmental conditions also result in asymmetric links characteristics within the network in terms of latency, transmission rates, and data path. In this paper, we conduct simulation study to examine the impact of network path asymmetry on TCP performance over wireless mesh networks. The simulation results we have obtained confirm that network path asymmetry severely degrades TCP performance. We then propose a new TCP enhancement mechanism called TCP-WAM (TCP for wireless asymmetric networks) whose transfer rate during losses is less dependent on ACKs. Finally we evaluate TCP-WAM performance by conducting several simulation experiments and our results indicate that TCP-WAM performs well especially in highly asymmetric environments.
Starting Page	1
Ending Page	6
File Size	406243
Page Count	6
File Format	PDF
ISBN	9781424497959
e-ISBN	9781424497966
DOI	10.1109/CCCA.2011.6031407
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-03-03
Publisher Place	Tunisia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Measurement Network asymmetry Protocols Filtering Wireless mesh networks Lead Throughput Transport control protocols
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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