Relevant bibliographies by topics / SIP/IMS

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'SIP/IMS'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "SIP/IMS"

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El Kalam, A. Abou, M. Maachaoui, N. Idboufker, H. Ait Lahcen, and A. Ait Ouahman. "A Secure Architecture for Nomadic User in IMS Network." International Journal of Mobile Computing and Multimedia Communications 4, no. 1 (January 2012): 1–17. http://dx.doi.org/10.4018/jmcmc.2012010101.

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The IP multimedia subsystem (IMS) is a basis for a significant new architecture which offers network operators the opportunity to expand their services, by integrating voice and multimedia communications and delivering them into new environments with new purposes. Basically, the IMS is an overlay network on top of IP layer that uses Session Initiation Protocol (SIP) as the primary signaling mechanism. SIP works at the application layer in IP networks. It is thus faced to not only the IP-networks security issues, but also to new issues which are related to the SIP protocol directly. Consequently, using IMS bears several new security challenges. This paper presents the most relevant SIP-related security vulnerabilities and threats, and the implementation and simulation test bed to experiment two versions of the SIP Asterisk software to emphasize these threats. The different security mechanisms that can be deployed to overcome the SIP security issues while putting emphasis the most important ones are discussed. Afterwards, the authors propose adaptable solutions to the SIP threats already identified for a specific service (access information from anywhere) in IMS context. Finally, conclusions are drawn and some perspectives are introduced to improve the security of multimedia applications.
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Bozinovski, Marjan, Liljana Gavrilovska, Ramjee Prasad, and Hans-Peter Schwefel. "Evaluation of a fault-tolerant call control system." Facta universitatis - series: Electronics and Energetics 17, no. 1 (2004): 33–40. http://dx.doi.org/10.2298/fuee0401033b.

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The session initiation protocol (SIP) is the main signaling protocol in the 3GPP IP multimedia subsystem (IMS). The SIP sessions in IMS have to be highly reliable. The developed fault-tolerant SIP call control concept includes state-sharing mechanism, failure-detection and fail-over management. The state-sharing mechanism representing the core entity in the overall system has been developed to meet the specific SIP functional features and requirements for reliability of SIP services. Theoretical analysis and measurements in a prototype implementation showed that TFTP outperforms FTP.
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LIN, Hui. "New SIP compression mechanism in IMS." Journal of Computer Applications 28, no. 3 (March 20, 2008): 599–600. http://dx.doi.org/10.3724/sp.j.1087.2008.00599.

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Chen, Xin. "A Novel Security Architecture for Peer-to-Peer IMS System." Advanced Materials Research 664 (February 2013): 1076–81. http://dx.doi.org/10.4028/www.scientific.net/amr.664.1076.

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Recently, some proposals suggest to use a peer-to-peer network instead of servers to facilitate SIP user registration and location in IMS communication systems. Due to the lack of central authority, security issue becomes one of the main problems in such P2P IMS systems. In this paper, we propose a novel security architecture for P2P IMS system. By using this architecture, our P2P IMS system becomes a fully distributed secure system in which there is not a central server indeed. Furthermore, our system is a scalable system which is capable of anonymous yet accountable real time communication based on SIP protocol which enables the system compatible with any existing IMS systems.
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Miskovic, Vanja, and Djordje Babic. "An architecture for pervasive healthcare system based on the IP multimedia subsystem and body sensor network." Facta universitatis - series: Electronics and Energetics 28, no. 3 (2015): 439–56. http://dx.doi.org/10.2298/fuee1503439m.

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One of the most promising applications of sensor networks is mobile health monitoring. The key concept of New Generation Networks (NGN) is IP Multimedia Subsystem (IMS). The possibility of using mobile devices as gateways between sensor networks and IMS has led to the development of integrated solutions such as the one proposed in this paper. Event-based SIP for Instant Messaging and Presence Leveraging Extensions (SIMPLE) architecture is considered as the best solution for IMS based mobile health monitoring. This paper also describes usage of the Session Initiation Protocol (SIP) protocol to communicate with the IMS core, whereas data are transmitted within the body of SIP messages. Thus there is no need for additional transport protocol. Presence Information Data Format (PIDF) is used as data format and data privacy is controlled by XML Configuration Access Protocol (XCAP), which also provides the ability to manage groups of patients.
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Fan, Ya Qin, Peng Jun Yu, and Mei Lin Liu. "SIP Protocol in the IMS Network and Simulation." Advanced Materials Research 616-618 (December 2012): 2051–54. http://dx.doi.org/10.4028/www.scientific.net/amr.616-618.2051.

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IP Multimedia Subsystem IMS is the core technology of next generation networks can provide real-time IP multimedia services and VoIP services through IMS, but IMS is not perfect, of which there are still some problems. IMS in real-time business a higher demand for mobility support, voice and video data usually use real-time transport protocol RTP to transfer user data protocol over UDP, requiring low transmission delay, seamless switching, as well as higher bandwidth utilization. In this paper, the IMS-related issues, the IMS network protocol.The SIP protocol simulation. Simulation results show that more of the nodes, the network send and receive packets faster, the results of this paper is the study of the IMS network, the actual reference value
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Yoo, Seung-Sun, and Sam-Taek Kim. "Implementation of IMS Core SIP Gateway based on Embedded." Journal of the Institute of Webcasting, Internet and Telecommunication 14, no. 5 (October 31, 2014): 209–14. http://dx.doi.org/10.7236/jiibc.2014.14.5.209.

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WANG, Shang-Guang, Qi-Bo SUN, and Fang-Chun YANG. "Detecting SIP Flooding Attacks Against IMS Network." Journal of Software 22, no. 4 (June 21, 2011): 761–72. http://dx.doi.org/10.3724/sp.j.1001.2011.03818.

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Lee, Myoung-rak, Sang-Ho Pyo, and Hoh Peter In. "Techniques study of IMS/SIP based Lawful Interception in 3G networks." Journal of the Korea Institute of Information Security and Cryptology 25, no. 6 (December 31, 2015): 1411–20. http://dx.doi.org/10.13089/jkiisc.2015.25.6.1411.

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Cheng, Hai Xiu, and Bi Zeng. "A Method Based on BP Neural Network to Detect SIP DOS Flooding Attack." Applied Mechanics and Materials 263-266 (December 2012): 2773–78. http://dx.doi.org/10.4028/www.scientific.net/amm.263-266.2773.

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In order to detect the SIP flooding attacks in IMS (IP Multimedia Subsystem) network, the paper proposes a flooding attack detection method based on BP neural network, and analyses causes of SIP flooding attack, and thus determine the BP the input of the neural network characteristics. The simulation results show that this method has better detection performance.
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Dissertations / Theses on the topic "SIP/IMS"

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Karas, Filip. "Marketingový průzkum v systému IMS." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218203.

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This master's thesis describes suggestion of an application designed for marketing research utilizing development environment of Ericsson company using services IMS and SIP. The essay examines the options offered by programming languages Java, PHP, of the database system MySQL, language XML and SIP messages. A creation of a server - client pair of applications used for marketing research was the main focus of this paper was. These applications can be used for distribution of questionnaires and their subsequent collection by the server, which allows for an output of statistics based on the acquired data. It is not necessary to work with all the applications, it is possible to filter based on one or more categories and only have the selected questionnaires sent. The questionnaire results will be shown in a form of straightforward table in the server’s console window. The XML language has been selected for the storing the questionnaires. All technologies and methods used are described within the essay. An integral part of the module is also the creation of a database of questions, which has been created in the PHP programming language. MySQL has been used as a database server. The application output is an XML file, which can be used as an input for an IMS server. The results of this thesis are demonstrated using screenshots taken during the application testing.
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Kumlin, Veronica. "Open Source SIP Application Servers For IMS Applications: A Survey." Thesis, Linköping University, Department of Computer and Information Science, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-10458.

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I ett IMS-nät (IP Multimedia Subsystem) finns Applikations Servrar (AS) som tillhandahåller tjänster, dessa AS är ofta SIP-servrar (Session Initation Protocol).

Målet för det här examensarbetet var att finna den SIP-server som är mest lämpad att använda när man ska lägga till en tjänst i ett IMS-nät.

Först gjordes en undersökning av tillgängliga SIP AS och ett tiotal hittades. Några av dem valdes ut för att jämföras och utredas mer noggrant. Inledningsvis inspekterades deras dokumentation, sedan analyserades proceduren att installera AS och att lägga till en tjänst på dem. Till sist lades tjänsten till i ett IMS-nät.

Eftersom varken deras fördelar eller nackdelar utmärkte sig på ett sådant sett att någon av dem sammantaget var bättre än den andra, kunde tyvärr inte någon av dem pekas ut som den mest lämpade.


In an IMS (IP Multimedia Subsystem) network there are Application Servers (ASs) which host and execute services. These are often SIP (Session Initiation Protocol) servers. The goal for this thesis was to evaluate a selection of open source SIP ASs to see which one was most suited for IMS service development.

Ten different SIP ASs was found in an initial search. They were briefly reviewed and some of them were chosen as candidates for further investigation.

The documentation of the chosen servers were thoroughly explored and evaluated; as was the installation process and how to deploy a service to them.

Finally the servers were installed and a service was implemented and deployed to an IMS network.

Unfortunately, I could not point out one of the ASs to be more suited than another for deploying an IMS service on. This was because they had different pros and cons and none of them were distinguishing in a way that made them superior to the other.

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Maachaoui, Mohamed. "Sécurité et performances des réseaux de nouvelle génération." Phd thesis, Toulouse, INPT, 2015. http://oatao.univ-toulouse.fr/14266/1/Maachaoui.pdf.

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L’IMS (IP Multimedia Subsystem) constitue l’architecture clé de contrôle pour les réseaux de nouvelle génération (NGN : Next Generation Network). IMS offre aux opérateurs réseaux la possibilité d'étendre leurs services, en intégrant la voix et des communications multimédia et de les livrer dans de nouveaux environnements avec de nouveaux objectifs. Sa sécurité totale mais à moindre coût est donc primordiale, principalement l’authentification. En IMS l’authentification est divisée en deux phases, une au niveau du domaine PS (Packet-Switch) avec le protocole 3GPP-AKA, et l’autre au niveau IMS en utilisant le protocole IMS-AKA. Dans notre première contribution, nous proposons un nouveau protocole d’authentification plus sécurisé que celui utilisé en IMS (IMS-AKA) et plus performant en termes d’utilisation de la bande passante et de temps de traitement. Notre méthode d’analyse repose sur la quantification de la signalisation induite par l’authentification IMS. La quantification est effectuée à l’aide d’expérimentations réelles. Sur la base des résultats obtenues, nous pouvons confirmer que notre protocole (1) peut économiser au moins 21,5% du trafic SIP/Cx par rapport à l’IMS-AKA, (2) permet de réduire la consommation de la bande passante de 27% par rapport à l’IMS-AKA, (3) résiste aux attaques atteignant la confidentialité et l’intégrité des données lors d’un enregistrement IMS (validé par AVISPA). Dans notre seconde contribution, nous avons présenté un nouveau modèle, nommé virtual walled-garden, de fourniture de services centré sur l'utilisateur en IMS. Ce modèle de fourniture de service permet d'offrir plus de liberté d'utiliser les services de tout fournisseur de contenu en fonction des besoins et préférences des utilisateurs. De cette manière les trois parties (utilisateur, fournisseurs de services et opérateur IMS) sont satisfaites. Les utilisateurs auront accès à un plus large éventail de services soutenus par l'IMS, les fournisseurs de services peuvent mettre en œuvre un large éventail de services IMS/SIP sans aucun investissement sur la mise en œuvre d'un réseau de cœur IMS ou de sa maintenance. Quant aux opérateurs cette façon de faire constitue une nouvelle forme de partenariat d'affaires avec les fournisseurs de services. Le modèle virtual walled-garden se base sur une fédération d'identité multi niveaux pour prendre en considération plusieurs niveaux de sécurité selon la criticité des applications sollicitées.
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Porubský, Tomáš. "Řešení bezpečnosti v IMS." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218174.

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In the first part of my master's thesis the network architecture of IMS (IP Multimedia Subsystem) is presented. The database of subscribers HSS (Home Subscriber Server) and SLF (Subscription Locator Function), as well as a SIP CSCF servers (Call Session Control Functions) process a SIP signalization and an AS application server performing services, etc. I focus on the registration of subscribers in the IMS network with a list of transmitted messages and description of each interface that is used in this network. The most important interfaces, which I described here, are Gm, Mw, Cx, Dx and Sh. Then I focused on security in IMS problems, which are divided into categories of access security and network security. After that is the implementation of IMS network in an open source Open IMS Core System considered under the Linux operating system. Here is the problem description from the actual system installation, through the configuration of all necessary elements of the network to the communication party itself. The communication analysis in the initial registration process and in subsequent communications is described. Finally I created laboratory exercises with a focus on the Open IMS Core System, where students learn about architecture and principle of networks based on IMS technology operation, with individual elements necessary for the operation of the network and their configuration. Students also test simple captured traffic analysis.
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Šišák, Vladimír. "Poskytování informací dle GPS souřadnic v systému IMS." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218061.

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This thesis deals with an introduction of new functionalities in communication via IP Multimedia Subsystem (IMS) at the beginning. There are described functions of each part and introduced protocols which are used by this system. Thesis presents the method of positioning with Global Positioning System (GPS) together with methods for the distance measuring of two points on the Earth. Services provided by IMS are developed in Service Development Studio which is shortly mentioned too. The developed service is divided into two parts: a client side part and a server side part, which is formed like a servlet. This program component, which is running on server is mentioned at the end of teoretical part. The procedure of service creating, setup and functions are in description of the created service, which provides informations based on geographical coordinates to user, is described after the teoretical part.
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Nagy, Ľuboš. "Tvorba IMS aplikací." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218175.

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This thesis describes basic principles of IP Multimedia Subsystem, known as the IMS, and shows the possibility for design applications using IMS. Firstly, a generic architecture IMS as layer model divided into four logic layer with definition the interfaces and the main entities is described. The IMS is based on SIP and IP protocols. Then is the architecture of SIP with the main entities explained. Structure of packet, request and response method in the part of SIP is also described. After that, three network services, namely presence services, instant messaging services and push over cellular services are presented. For each services the figuration of their architecture and the basic definition of their main entities are shown. Moreover, the graphical diagrams of SIP signalization are depicted for these services. In the next chapter, the self implementation of services was designed, namely presence services and services for speech transmission with next secondary function as sending email with registration information of user. The project was designed as client - server application in the development studio SDS Ericsson 4.1. The client application was simulated as java application and also as an application for Symbian emulator. The process of client registration was performed with the help of ICP platform. Finally, the diagram of analysis communication client - server is displayed with the captured packets explanation by the help of network analyzer WireShark. The video files, which were specially created for this thesis showing presentations for presence services and sending email. The most important results are summarized in the end of this article.
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Karpíšek, Filip. "Monitorování a účtování spojení v sítích IMS." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2015. http://www.nusl.cz/ntk/nusl-234960.

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This thesis describes protocols used in IP Multimedia Subsystem (IMS) networks. Freely available implementations of IMS system are described. The main goal is to describe design and implementation of a tool for analyzing communication between users and IMS system. The tool seeks and decodes signaling messages. These messages are analyzed for information about sessions which are necessary for session monitoring and accounting. Final gathered information are exported in a form of extended NetFlow/IPFIX records. We used open-source Open IMS Core implementation for building IMS network and creating test data. As endpoints we used another open-source application for Android OS called IMSDroid.
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Muswera, Walter Tawanda. "Developing a cross platform IMS client using the JAIN SIP applet phone." Thesis, Rhodes University, 2015. http://hdl.handle.net/10962/d1017934.

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Since the introduction of the IP Multimedia Subsystem (IMS) by the Third Generation Partnership Project (3GPP) in 2002, a lot of research has been conducted aimed at designing and implementing IMS capable clients and network elements. Though considerable work has been done in the development of IMS clients, there is no single, free and open source IMS client that provides researchers with all the required functionality needed to test the applications they are developing. For example, several open and closed source SIP/IMS clients are used within the Rhodes University Conver- gence Research Group (RUCRG) to test applications under development, as a result of the fact that the various SIP/IMS clients support different subsets of SIP/IMS features. The lack of a single client and the subsequent use of various clients comes with several problems. Researchers have to know how to deploy, configure, use and at times adapt the various clients to suit their needs. This can be very time consuming and, in fact, contradicts the IMS philosophy (the IMS was proposed to support rapid service creation). This thesis outlines the development of a Java-based, IMS compliant client called RUCRG IMS client, that uses the JAIN SIP Applet Phone (JSAP) as its foundation. JSAP, which originally offered only basic voice calling and instant messaging (IM) capabilities, was modified to be IMS compliant and support video calls, IM and presence using XML Configuration Access Protocol (XCAP).
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Papazafeiropoulos, Christos. "Facilitating the adoption and use of the IP Multimedia System." Thesis, KTH, Kommunikationssystem, CoS, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-91530.

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The IP Multimedia Subsystem (IMS) is still under development and not widely adopted in the market. Some companies are reluctant to deploy IMS and some telecommunications vendors believe that IMS will not achieve a desirable market share. The purpose of this thesis work is to give a boost to this technology (i.e., to accelerate its market growth) by providing the community (both developers and operators who might adopt this technology) with an evaluation of the Ericsson Java Application Programming Interfaces (APIs) called Mobile Java Communication Framework (MJCF) APIs. Developers with or even without knowledge of the IMS architecture and signaling should be able to use these interfaces in order to develop applications on top of IMS. A client-server application is designed and implemented to facilitate this evaluation and to serve as an example for others. The motivation behind this application is the every day needs of the people who search for discounts while they are shopping. Users set up their profile by specifying their preference concerning discounts for specific products; while shop owners publish discounts. When a user is near a store which offers interesting discounts (i.e., discounts that match their profile) new notifications will be sent to his/her mobile device. This application exploits the MJCF APIs and uses several of its basic functions; specifically subscriptions, messages, notifications, and publications are some of the messages that can be utilized through these interfaces.</p> Throughout the application development, bugs were found in the APIs and corrections were suggested for the documentation. Measurements were made in order to evaluate the memory utilization and delay associated with these APIs. It was observed that the delays added by the APIs are somewhat high and may negatively affect the experience of users. However memory utilization seamed to be low for client applications and quite high for the server side given the resources of today's services and cellular phones.
Systemet IP Multimedia Subsystem (IMS) är under utveckling och är inte vida etablerat än. Nogra företag tvekar inför etablering av IMS och nogra telekomföretag anser att IMS inte kommer uppnå önskad marknadsandel. Syftet med detta examensarbete är att ge denna teknologi en skjuts framåt (d.v.s. att öka marknadstillväxten) genom att tillhandahålla den gemenskap av både utvecklare och operatörer som kan tänka sig ta in denna teknologi, med en utvärdering of Ericsson’s Java Applications Programming Interfaces (APIs) kallade MJCF API. Utvecklare med eller t.o.m. utan kunskap om arkitekturen och signalleringen hos IMS ska kunna använda dessa gränssnitt till att utveckla tjänster på IMS. En klient-server applikation är designade och implementerad för att möjliggöra denna utvärdering och för att agera exempel för andra. Motiveringen bakom denna applikation är det vardagliga behovet hos människor som söker efter rabatter/erbjudanden när de handlar. Användare sätter upp sin profil genom att specificera sina önskemål angående erbjudanden för specifika produkter medan butiksinnehavare publicerar sina erbjudanaden. När en användare är nära en butik som erbjuder någonting interessant (d.v.s. produkter som matchar använadarens profil), så kommer nya notifikationer att anlända till hans/hennes mobil. Denna applikation uttnyttjar MJCF APIet och använder ett flertal av dess basala funktioner; speciellt gällande prenumerationer, meddelanden, notifieringar och publiceringar är några av de meddelanden som möjliggörs genom dessa gränssnitt.</p> Genom applikationsutvecklingen så blev flera buggar i APIerna upptäckta och förbättringar till dokumentationen föreslogs. Mätningar gjordes för att utvärdera minnesåtgången och fördröjningar associerade med dessa APIer. Det observerades att API fördröjningar är något höga och kan påverka användarupplevelsen negativt. Däremot verkade minnesåtgången vara låg på klientsidan och hög på serversidan, givet de resurser dagens tjänster och mobila telefoner förfogar över.
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Novotný, Filip. "Tvorba real-time aplikace pro platformu IMS." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219264.

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This paper presents a description of the IP Multimedia Subsystem (IMS) architecture and IMS services. IMS is a standardized next-generation networking architectural framework providing advanced services on mobile and fixed networks. The first chapter describes four-layer IMS architecture and also mentions supported services. The second chapter deals with IMS protocols and primarily focuses on the SIP signaling protocol. UDP, RTP and TLS protocols are also included in this chapter. The third chapter is dedicated to practical part of this paper. A VoIP Java application has been created based on the findings gained throughout the thesis. The main part of the created application consists of client-side application, database MySQL and Servlet application for communication between database and client-side application. The whole system was created using SDS Sony Ericsson 4.1. FD1. An OpenIC lite client has been tested during development on our system and results were compared with created client-side application. A web application based on PHP, MySQL and ActionScript then handles administration and monitoring of customers using voice services.
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Books on the topic "SIP/IMS"

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Developing SIP and IP Multimedia subsystem (IMS) applications. [United States?]: IBM, International Technical Support Organization, 2007.

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Edward, Oguejiofor, and International Business Machines Corporation. International Technical Support Organization., eds. Developing SIP and IP Multimedia subsystem (IMS) applications. [United States?]: IBM, International Technical Support Organization, 2007.

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Developing Sip and Ip Multimedia Subsystem (Ims) Applications. Vervante, 2007.

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Book chapters on the topic "SIP/IMS"

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El Mahdi Boumezzough, Mohamed, Noureddine Idboufker, and Abdellah Ait Ouahman. "Evaluation of SIP Call Setup Delay for VoIP in IMS." In Lecture Notes in Computer Science, 16–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38227-7_6.

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Chen, Whai-En, and Shih-Yuan Cheng. "A SIP/IMS Platform for Internet of Things in WLAN-3GPP Integration Networks." In Advances in Intelligent Systems and Computing, 437–47. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07773-4_43.

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Yuan, Zhao, Gu Su, and Wang Xiaoyun. "Contrast Study on Two Kinds of SIP Trunking Route Scheme Based IMS Network." In Proceedings of the 2012 International Conference on Communication, Electronics and Automation Engineering, 1213–18. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-31698-2_170.

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Olmedo, Vicente, Antonio Cuevas, Victor Villagr√°, and Jos√© Moreno. "Next-Generation Grid Support over the SIP/IMS Platform." In IP Multimedia Subsystem (IMS) Handbook, 133–56. CRC Press, 2008. http://dx.doi.org/10.1201/9781420064612.ch6.

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"Next-Generation Grid Support over the SIP/IMS Platform." In IP Multimedia Subsystem (IMS) Handbook, 149–72. CRC Press, 2018. http://dx.doi.org/10.1201/9781315219011-15.

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Belmekki, Elmostafa, Raouyane Brahim, Abdelhamid Belmekki, and Mostafa Bellafkih. "Security in 4G." In Security and Privacy in Smart Sensor Networks, 338–67. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-5736-4.ch015.

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IMS is a standardized service architecture defined by 3GPP, ETSI, and IETF to provide multimedia services such as videoconferencing, VoD, and voice over IP. IMS is mainly based on the SIP protocol for session initialization. The convergence to full IP has advantages but also disadvantages. The latter are mainly inherited from the weaknesses of the IP protocol, in particular the QoS and the security aspects. It is in this context that this chapter is written. It has as main objective to analyze security in IMS networks as service layer in 4G to identify the most vulnerable points and propose security solutions that can be implemented without degrading the QoS.
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Ali, Ashraf A., and Khalid Al-Begain. "Session Initiation and IP Multimedia Subsystem Performance Evaluation." In Advances in Wireless Technologies and Telecommunication, 36–49. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-2113-6.ch003.

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In this chapter analyses the overall system capacity and scalability which is affected by added traffic introduced by more users who are trying to access the system provided services. This could happen in a mission critical communication system during natural disaster or large scale attack, where the system accessibility could be affected due to the sudden increase of number of users. The need for a more detailed study of other SIP and IMS KPIs is vital to have a better understanding of the overall system performance which will enable us to take it a step further toward system performance enhancement and optimization to avoid single point of failure of the system.
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"SIP." In The IMS, 297–331. Chichester, UK: John Wiley & Sons, Ltd, 2006. http://dx.doi.org/10.1002/0470031840.ch12.

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"SIP." In The IMS, 259–300. Chichester, UK: John Wiley & Sons, Ltd, 2004. http://dx.doi.org/10.1002/0470871156.ch8.

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Vrakas, Nikos, and Costas Lambrinoudakis. "A Cross Layer Spoofing Detection Mechanism for Multimedia Communication Services." In Systems Approach Applications for Developments in Information Technology, 257–72. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-4666-1562-5.ch018.

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The convergence of different network types under the same architecture offers the opportunity for low cost multimedia services. The main objective has been the high quality of the provided services. However, considering that older equipment with limited processing capabilities may be present in such environments, a tradeoff between security and service quality is inevitable. Specifically, low resource enabled devices cannot utilize state of the art security mechanisms, such as IPSec tunnels, integrity mechanisms, etc., and they simply employ HTTP Digest authentication. The lack of integrity mechanisms in particular raises many security concerns for the IMS infrastructures. Attacks such as Man in the Middle (MitM), spoofing, masquerading, and replay that can be launched in IMS environments, have been pinpointed in bibliography by various researchers. Moreover, an internal attacker may utilize his legitimate security tunnels in order to launch spoofing and identity theft attacks. This paper presents a cross-layer spoofing detection mechanism that protects SIP-based infrastructures from the majority of the aforementioned attacks without requiring an additional cryptographic scheme which would inevitably introduce considerable overheads.
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Conference papers on the topic "SIP/IMS"

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Panwar, Birender, and Keval Singh. "IMS SIP core server test bed." In 2007 International Conference on IP Multimedia Subsystem Architecture and Applications (IMSAA). IEEE, 2007. http://dx.doi.org/10.1109/imsaa.2007.4559100.

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Caba, Cosmin, and José Soler. "An IMS testbed for SIP applications." In Principles, Systems and Applications. New York, New York, USA: ACM Press, 2013. http://dx.doi.org/10.1145/2589649.2554667.

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Caba, Cosmin, and José Soler. "An IMS testbed for SIP applications." In IPTComm '13: Principles, Systems and Applications of IP Telecommunications. New York, NY, USA: ACM, 2013. http://dx.doi.org/10.1145/2554666.2554667.

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Belmekki, Elmostafa, Brahim Raouyane, Abdelhamid Belmekki, and Mostafa Bellafkih. "Secure SIP signalling service in IMS network." In 2014 9th International Conference on Intelligent Systems: Theories and Applications (SITA). IEEE, 2014. http://dx.doi.org/10.1109/sita.2014.6847291.

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Chen Wu. "User ID provisioning for SIP registration in IMS." In 2010 2nd International Conference on Education Technology and Computer (ICETC). IEEE, 2010. http://dx.doi.org/10.1109/icetc.2010.5529401.

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Kumar, Ram, Frank Reichert, Andreas Haber, Anders Aasgard, and Lian Wu. "Migration of Enterprise VoIP/SIP Solutions towards IMS." In 2007 3rd International Conference on Testbeds and Research Infrastructure for the Development of Networks and Communities. IEEE, 2007. http://dx.doi.org/10.1109/tridentcom.2007.4444736.

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Jacob, C., H. Pfeffer, D. Linner, S. Steglich, Li Yan, and Ma Qifeng. "Automatic routing of semantic SIP messages in IMS." In 2008 2nd International Conference on Internet Multimedia Services Architecture and Applications. IEEE, 2008. http://dx.doi.org/10.1109/imsaa.2008.4753908.

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Chen, Zhiqiang, Wushao Wen, and Da Yu. "Detecting SIP flooding attacks on IP Multimedia Subsystem (IMS)." In 2012 International Conference on Computing, Networking and Communications (ICNC). IEEE, 2012. http://dx.doi.org/10.1109/iccnc.2012.6167401.

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Subramanian, Prasad, and Binod P.G. "Convergence of Java EE and SIP in IMS AS." In 2007 International Conference on IP Multimedia Subsystem Architecture and Applications (IMSAA). IEEE, 2007. http://dx.doi.org/10.1109/imsaa.2007.4559078.

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Chen, Whai-En, Li-Yao Tseng, and Chien-Lung Chu. "An Effective Failure Recovery Mechanism for SIP/IMS Services." In 11th EAI International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness. IEEE, 2015. http://dx.doi.org/10.4108/eai.19-8-2015.2261247.

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