NDLI: Efficient Packet Sequencing for Dynamic Multicast Layers

Content Provider	IEEE Xplore Digital Library
Author	Lucas, V. Pansiot, J.-J. Grad, D. Hilt, B.
Copyright Year	2011
Abstract	Most multicast flows such as IPTV are streamed at a constant rate using UDP. To fairly share the bandwidth with TCP streams, several multicast congestion controls have been proposed. Highly scalable and most efficient ones are receiver-driven and use dynamic multicast groups, which means that each group begins to send at a high rate and slows down progressively. Each receiver joins groups to obtain a fair rate and thus gets a different amount of the data sent by the source. Thereby, despite promising results in terms of fairness, it is a challenging task to efficiently use these dynamic groups and to send useful data whatever the amount of data acquired by a receiver. This article presents a sequencer which maps out application data to dynamic groups in an optimal way. Multiple applications such as file transfer or video streaming, can use this sequencer, thanks to a simple API usable with any buffer containing the most important data first. This API insures that a receiver subscribed to N% of the source rate obtains the N% most important data of each buffer sent by the source. This solution is experimented on two test beds providing ideal or realistic network conditions. The first results prove the sequencer optimal performances, as well as the agreement between the received rate and the importance of the received data. However, the second scenario shows that even with this optimal sequencer, a lossy network may impact on the performances of applications unable to use data containing gaps. But, an extra evaluation shows that a simple FEC mechanism is enough to remove most of this impact. Finally, to show the relevance of this sequencer to the application layer, we propose a file transfer software using a FEC encoding. Results show the file transfer efficiency as a download with a single receiver generates only little more overhead than TCP. Moreover, download time is almost independent of the number of receivers, and is already faster than TCP with only 2 competing downloads.
Starting Page	667
Ending Page	674
File Size	356088
Page Count	8
File Format	PDF
ISBN	9781612843131
ISSN	1550445X
DOI	10.1109/AINA.2011.107
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-03-22
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Receivers Streaming media Protocols Software Encoding Forward error correction Redundancy Congestion control Packet sequencer Multicast
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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