IP Multimedia Subsystem
Aldo Campi · AMS Campus - AlmaDL · 2012
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About 935 papers for “IP Multimedia Subsystem”
Aldo Campi · AMS Campus - AlmaDL · 2012
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Todd Olson · Zenodo (CERN European Organization for Nuclear Research) · 2024
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Walter Cerroni · AMS Campus - AlmaDL · 2011
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Magedanz, T., Schreiner, F., Weik, P. · Publikationsdatenbank der Fraunhofer-Gesellschaft (Fraunhofer-Gesellschaft) · 2007
Kapitel 12.2.5 (124. Ergänzungslieferung)
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Auerbach Publications eBooks · 2009
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Elsevier eBooks · 2006
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Δημήτριος Αντωνακάκης · Dione (University of Piraeus) · 2007
Το Internet Protocol (IP) Multimedia Subsystem (IMS) είναι ένα standard, βασισμένο\nστις IP δικτυακές επικοινωνίες, που παρέχει ένα ανεξάρτητο δίκτυο, και ένα περιβάλλον παροχής υπηρεσιών για τους ενσύρματους και τους ασύρματους χρήστες\nδικτύων. Τα πρότυπα IMS καθορίζουν τις κοινές διεπαφές για τη μετάδοση σήματος\nκαι πολυμεσικών εφαρμογών, οι οποίες είναι ανοικτές, ανεξάρτητες προμηθευτών, διευκολύνοντας τις περιπλοκές δομές των χαμηλών στρωμάτων των υπαρχόντων δικτύων. Η πρόοδος προς τα IMS-based all-IP δίκτυα θα είναι ιδιαίτερα εξελικτική. Για το άμεσο μέλλον, τα IMS-based δίκτυα θα συνυπάρξουν με τα παραδοσιακά CS δίκτυα, όπως είναι το GSM και το PSTN. Επομένως, είναι κρίσιμο για την IMS πλατφόρμα να παρέχει την κατάλληλη υποδομή για την αλληλεπίδραση μεταξύ των SS7 πρωτοκόλλων (π.χ., πρωτόκολλα βασισμένα σε Transaction Capability Application Part (TCAP)) με το SIP ή το DIAMETER. Στη συνέχεια της διπλωματικής περιγράφονται διάφορες τέτοιες πύλες. Στη διπλωματική εργασία γίνεται αναφορά στη δικτυακή αρχιτεκτονική της IMS πλατφόρμας, σε παραδείγματα χρήσης της, στις διεπαφές κατά την μετάδοση σημάτων, στις λειτουργίες της, έτσι ώστε να γίνουν ποιο κατανοητές και τέλος καταλήγει σε μια έρευνα πάνω στον όγκο μετάδοσης πληροφορίας μέσα σε αυτή.
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Ilyas, Mohammad · CERN Document Server (European Organization for Nuclear Research) · 2008
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Hladíková, Vladimíra · Brno University of Technology Digital Library (Brno University of Technology) · 2008
Bakalářská práce je vypracována se zaměřením na konvergenci sítí a služeb v mobilním prostředí s implementací IMS. V první části jsem se věnovala důvodům vzniku nového systému, kterým je IMS (Internet Protocol Multimedia Subsystem) a jaké možnosti tato architektura přináší uživatelům. Jsou zde samozřejmě zmíněny instituce a organizace, které se vývojem tohoto systému zabývají. V této kapitole je stručně popsána historie jednotlivých standardizačních částí. V další části je popsána architektura IMS, její hlavní části a funkce. Je zde popsáno, které služby je možno pomocí tohoto systému poskytovat. Pro zajištění kvalitního přenosu v sítích založených na IP protokolu je nutno také zajistit určitou kvalitu služeb QoS (Quality of Service), proto je tomuto tématu věnována jedna z dalších kapitol. Jsou zde popsány principy zajištění kvality. Hlavním faktorem ovlivňujícím kvalitu přenosu je, jaký typ dat je po IP sítích přenášen. Další kapitola je věnovaná autentizaci a autorizaci v IMS sítích. Zejména objasnění spojení s protokolem Diameter. V další částí jsem se věnovala VoIP (Voice over IP), přenos hlasu po IP sítích. Je zde popsána základní myšlenka přenosu hlasu IP sítěmi. Pro přenos hlasu IP sítěmi jsou důležité kodeky, proto je zde uveden jejich přehled. Na to navazuje kapitola věnovaná použitým protokolům, bez nichž by celý systém nemohl fungovat. Jedná se o protokoly SDP (Session Description Protocol), protokoly pro přenos dat v reálném čase RTP (Real-time Transport Protocol), RTCP (RTP Control Protocol), RTSP (Real-Time Streaming Protocol) a nakonec nejdůležitější signalizační protokol SIP (Session Initiation Protocol) a jeho propojení se strukturou IMS. V závěru jsou zhodnoceny možnosti IMS v mobilních komunikačních sítích a jejich využití pro VoIP. Mimo jiné jsou vzaty v úvahu i ekonomické vlivy na rozšíření zařízení podporujících služby s implementací IMS pro širokou veřejnost.
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2008
The IP multimedia subsystem (IMS), established as the foundation for future wireless and wireline convergence, is the bedrock that will facilitate easy deployment on new, rich, personalized multimedia communication services that mix telecom and data services. Designers, planners, and researchers of communication systems will need to make full use of the technology occurring with this convergence if they want to be the ones providing end users with new and efficient services that are as cost-effective as they are innovative.To provide researchers and technicians with the tools they need to optimize their role in this communication revolution, the IP Multimedia Subsystem (IMS) Handbookpresents all the technical aspects of the IMS needed to support the growth of digital traffic and the implementation of underlying networks. This guide covers everything from basic concepts to research-grade material, including the future direction of the architecture. Organized in three sections, the book brings together the technical savvy of 50 pioneering experts from around the world, providing complete coverage of relevant concepts, technologies, and services. Learn How IMS Will Speed Innovation Filling the gap between existing traditional telecommunications and Internet technologies, IMS has led to an environment in which new services and concepts are introduced more quickly than ever before, such as reusable service components and real-time integration. The technology promises to be a cost-effective evolutionary path to future wireless and wireline convergences that will meet next-generation service requirements.
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Aldo Campi · AMS Campus - AlmaDL · 2012
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Čech, Martin · Brno University of Technology Digital Library (Brno University of Technology) · 2009
Aim of this Bachelor´s thesis is to describe singnalization during communication through IP Multimedia Subsystem technology. The first part focuses on describing the technology itself, entities of its architecture and used protocols. Next part deals with creation of a network which will be used for examining signalization during call sessions. This network is created in Ericsson´s Service Development Studio environment. The last part discusses development and testing of client application for instant messaging.
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Signaling Flows, Message Contents Stage · 2012
COPYRIGHT NOTICE 3GPP2 and its Organizational Partners claim copyright in this document and individual Organizational Partners may copyright and issue documents or standards publications in individual Organizational Partner's name based on this document. Requests for reproduction of this document should be directed to the 3GPP2 Secretariat at secretariat@3gpp2.org. Requests to reproduce individual Organizational Partner's documents should be directed to that Organizational Partner. See www.3gpp2.org for more information. X.S0013-010-0 v1.0 1 2
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Martin Koukal, Robert Bešťák · Proceedings Elmar ... · 2006
IP multimedia subsystem (IMS) is standardized network architecture for telecom operators that want to provide mobile and fixed multimedia services. IMS-enabled networks provide access to these services from both IP networks and circuit-switched PSTN/PLMNs. This paper describes the IMS architecture and explains its benefits. It concentrates on the main IMS system components and briefly summarizes their key system functions. However, the IMS is a rapidly evolving standard and modifications to the IMS architecture are envisaged. This paper provides a base for future research and work in this domain
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Čech, Martin · Brno University of Technology Digital Library (Brno University of Technology) · 2009
\nAim of this Bachelor´s thesis is to describe singnalization during communication through IP Multimedia Subsystem technology. The first part focuses on describing the technology itself, entities of its architecture and used protocols. Next part deals with creation of a network which will be used for examining signalization during call sessions. This network is created in Ericsson´s Service Development Studio environment. The last part discusses development and testing of client application for instant messaging.\n
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Karlík, Martin · Brno University of Technology Digital Library (Brno University of Technology) · 2013
Karlík, Martin Ústav telekomunikací, Fakulta elektrotechniky a komunikačních technologií, Vysoké učení technické v Brně. Metodika testovania IP Multimedia Subsystem Cieľom tejto práce je štúdium, rozbor a opis architektúry IMS siete predovsetkym IMS jadra a aplikacnej vrstvy, tj. úlohy a spolupráca medzi jednotlivými prvkami P-CSSF, I-CSFS, S-CSCF, BGCF, MGCF, HSS, SLF, aplikačnými servermi a koncovími terminálmi. Analýza prezenčných služieb, nastavenie hlaviciek SIP sprav pri uskutocnovani sluzby poskytujúcej informacie o dostupnosti jednotlivy klientov a iFC kritérií. Ďalej je práca zameraná na implementáciu samotnej IMS siete založenej na Open Source SIP Server Kamalio, Open Source IMS Core System FhoSS, tvorbu testovacích scenárov pre prezenčné služby a test-bed pre IMS
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О. А. Золотухина, O. Tkalenko, A. M. Tushych et al. · Telecommunication and information technologies · 2019
Державний університет
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Alia Bellabas, Géraldine Texier, Samer Lahoud et al. · HAL (Le Centre pour la Communication Scientifique Directe) · 2011
International audience
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Cornelia Kappler · 2009
This chapter contains sections titled: IMS Service Support Architecture Protocols Summary
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Karlík, Martin · Brno University of Technology Digital Library (Brno University of Technology) · 2013
Karlík, Martin Department of Telecommunications, Faculty of Electrical Engineering and Communication, Brno University of Technology. Methodology for testing IP Multimedia Subsystem The aim of this work is the study, analysis and description of the IMS network architecture mainly IMS core layer and application layer, i.e roles and cooperation among elements of P-CSCF, S-CSCF, I-CSCF, BGCF, MGCF, HSS, SLF, application servers and end terminals. Analysis of presence services , setup of headers of SIP messages during makeing service provideing informations about accessibility of clients and iFC criteria.Furthet project is focused on the implementation of the IMS network based on the Open Source SIP Server Kamalio, Open Source IMS Core System FhoSS, creation tests scenarios for presence services and test-bed for IMS.
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