NDLI: Scheduling over dissimilar paths using CMT-SCTP

Content Provider	IEEE Xplore Digital Library
Author	Halepoto, I.A. Lau, F.C.M. Zhixiong Niu
Copyright Year	2015
Description	Author affiliation: Dept. of Comput. Sci., Univ. of Hong Kong, Hong Kong, China (Halepoto, I.A.; Lau, F.C.M.; Zhixiong Niu)
Abstract	Concurrent Multipath Transfer (CMT-SCTP) using the Stream Control Transmission Protocol (SCTP) over multiple paths can achieve an aggregated transmission throughput much greater than a single path. A problem arises when the fair round robin scheduling (RRS) in CMT-SCTP allows the slow paths to affect the overall throughput due to out-of-sequence data at the receiver. Data along the slow and fast paths occupy the shared receiver buffer while waiting for the out-of-sequence data, which can easily lead to performance degradation. Therefore, intelligent scheduling of data transmissions is necessary for efficient data transfer, particularly in realistic situations where the paths are dissimilar and the buffer size is limited. We propose an algorithm for scheduling data transmissions based mainly on the outstanding bytes (CMT-OUT). The algorithm updates the path quality after a successful transmission, which is a measure of how preferable the current destination would be when selection happens in the next round. The experiments on a realistic testbed show that CMT-OUT improved the throughput of CMT-SCTP on average by 21% when the maximum bandwidth dissimilarity is applied over a two-path network. The mechanism in CMT-SCTP to handle the delay dissimilarity in a simple two-path scenario is very efficient due to the rare timer based retransmissions. In the experiments for the more complex four-path scenario, CMT-OUT improved the throughput by 54%.
Starting Page	535
Ending Page	540
File Size	633063
Page Count	6
File Format	PDF
ISBN	9781479989935
ISSN	22880712
DOI	10.1109/ICUFN.2015.7182601
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-07
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	outstanding data Protocols Packet loss out-of-sequence data Receivers Throughput CMT-SCTP SCTP RRS dissimilar paths Bandwidth Delays Data communication
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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