NDLI: Local SIP overload control: Controller design and optimization by Extremum Seeking

Content Provider	IEEE Xplore Digital Library
Author	De Cicco, L. Cofano, G. Mascolo, S.
Copyright Year	2013
Description	Author affiliation: Dipt. di Elettrotec. ed Elettron., Politec. di Bari, Bari, Italy (De Cicco, L.; Cofano, G.; Mascolo, S.)
Abstract	The Session Initiation Protocol (SIP) is a signaling framework allowing two or more parties to establish, alter, and terminate various types of media sessions. An open issue is the proper handling of overload situations that in SIP servers occur when the incoming flow of requests overcomes the processing resources. Due to overload, call establishment times increase and retransmissions are triggered causing an uncontrolled increase of the total input rate. In this paper we present a local overload control system, made of two PI controllers, aiming at regulating both the queue length and the CPU load of the SIP proxy to provide high goodput and low call establishment delays. The proposed control system has been implemented in Kamailio (OpenSER) and the controllers parameters have been tuned by employing the Extremum Seeking algorithm to minimize a cost function. A performance evaluation and comparison with Ohta and Occupancy local overload controllers has shown the following main results: 1) the proposed controller is able to counteract overload situations providing a goodput which is close to the optimal while maintaining low call establishment delays and retransmission ratios; 2) the proposed control system significantly outperforms Ohta and OCC both in terms of goodput, call establishment delays and retransmission ratios.
Sponsorship	IEEE Control Syst. Soc.
Starting Page	3281
Ending Page	3286
File Size	417369
Page Count	6
File Format	PDF
ISBN	9781467357142
ISSN	07431546
e-ISBN	9781467357173
DOI	10.1109/CDC.2013.6760384
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-12-10
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Servers Control systems Mathematical model Vectors Protocols Cost function
Content Type	Text
Resource Type	Article
Subject	Control and Optimization Control and Systems Engineering Modeling and Simulation

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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