NDLI: Performance Analysis of Network Coding With Virtual Overhearing in Wireless Networks

Content Provider	IEEE Xplore Digital Library
Author	Ling Fu Xie Chong, P.H.J. Yong Liang Guan
Copyright Year	1967
Abstract	Due to the broadcast nature of wireless channels, overhearing plays an important role in interflow network coding in that it serves as a way to acquire the side information for the decoding of network-coded packets. Since overhearing only takes effect in the one-hop neighborhood of nodes, it, in turn, restricts the identification of network coding opportunities. That is, if the side information for packet decoding cannot be overheard, no coding opportunity can be identified. Hence, in this paper, we aim to relax such a restriction to further explore network coding opportunities. Specifically, we propose a virtual overhearing (VOH) technique to enable network coding when the side information cannot be obtained from traditional overhearing previously mentioned. VOH allows a node to obtain a packet sent by another node that can be two or more hops away. As a result, VOH can serve as a supplementary way for side information acquirement, thus still enabling network coding between network flows when traditional overhearing is not possible to obtain the needed side information. The additional coding opportunities brought by VOH can be translated into additional performance gains. We first analyze network coding with VOH in a simple topology and show that with VOH, network capacity could be improved by over 12% (in some situations, network throughput could be improved by 50%). Then, we conduct simulations in NS-2 to show the advantage of VOH.
Sponsorship	IEEE Vehicular Technology Society
Starting Page	2051
Ending Page	2061
Page Count	11
File Size	1090755
File Format	PDF
ISSN	00189545
Volume Number	64
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Encoding Network coding Decoding Peer-to-peer computing Network topology Topology Wireless networks virtual overhearing (VOH) network coding opportunities overhearing side information
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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