Download or read book Evaluation of the Fraunhofer Open Source IMS Core platform with special focus on the Call Session Control Function CSCF written by Rainer Hallwachs and published by GRIN Verlag. This book was released on 2009-09-07 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diploma Thesis from the year 2007 in the subject Computer Science - Applied, grade: 1, University of Applied Sciences Technikum Vienna, course: Betriebliche Informationsnetze basierend auf SIP bzw. verwandten Protokollen wie SDP, RTP usw., language: English, abstract: Given the increasing penetration of Internet Protocol (IP) technologies and the tremendous growth in wireless data traffic, the telecom industry is evolving towards All-IP based Next Generation Networks (NGN). The Third Generation Partnership Project (3GPP) has specified an IP Multimedia Subsystem (IMS) in 3GPP Release 5 to support converged multimedia applications across both wireless and wireline devices. IMS provides full packet call control capabilities by using the Session Initiation Protocol (SIP). SIP has been chosen by 3GPP as the signaling protocol to handle user registrations and multimedia session management in the IMS. Using IP protocols defined by the Internet Engineering Task Force (IETF), IMS will merge cellular networks and the internet, offering new service capabilities for rapid service creation and deployment of integrated IP multimedia applications. This diploma thesis provides an insight into the IP Multimedia Core Network, specifically focusing on its key element, the Call Session Control Function (CSCF). The CSCF serves as control point to manage all IMS sessions in the network, whether they are voice, video, data, messaging, gaming, or any other service. Moreover, this paper discusses the requirements identified by 3GPP to support SIP in cellular networks, and the extensions to the SIP protocol suite in order to fulfill them. The practical part of the thesis evaluates the Open Source IMS Core platform of the Fraunhofer Institute FOKUS with respect to the CSCF which is based on the SIP Express Router (SER). The analysis describes the new modules and advanced functions of SER, required to cope with the extended version of SIP and to act as a CSCF for IMS purposes.

Download or read book The IMS written by Miikka Poikselkä and published by John Wiley & Sons. This book was released on 2013-05-29 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 3rd edition of this highly successful text builds on the achievement of the first two editions to provide comprehensive coverage of IMS. It continues to explore the concepts, architecture, protocols and functionalities of IMS while providing a wealth of new and updated information. It is written in a manner that allows readers to choose the level of knowledge and understanding they need to gain about the IMS. With 35% new material, The IMS,IP Multimedia Concepts and Services, 3rd Edition has been completely revised to include updated chapters as well as totally new chapters on IMS multimedia telephony and IMS voice call continuity. Additional new material includes IMS transit, IMS local numbering, emergency sessions, identification of communication services in IMS, new authentication model for fixed access, NAT traversal and globally routable user agents URI. Detailed descriptions of protocol behaviour are provided on a level that can be used for implementation and testing. Key features of the 3rd edition: Two new chapters on IMS multimedia telephony service and IMS Voice Call Continuity Updated information on Third Generation Partnership Project (3GPP) Release 7 level, including architecture, reference points and concepts Substantially extended coverage on IMS detailed procedures Completely rewritten and extended chapters on IMS services

Download or read book Towards Sustainable Society on Ubiquitous Networks written by Makoto Oya and published by Springer Science & Business Media. This book was released on 2008-09-02 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: The massive growth of the Internet has made an enormous amount of infor- tion available to us. However, it is becoming very difficult for users to acquire an - plicable one. Therefore, some techniques such as information filtering have been - troduced to address this issue. Recommender systems filter information that is useful to a user from a large amount of information. Many e-commerce sites use rec- mender systems to filter specific information that users want out of an overload of - formation [2]. For example, Amazon. com is a good example of the success of - commender systems [1]. Over the past several years, a considerable amount of research has been conducted on recommendation systems. In general, the usefulness of the recommendation is measured based on its accuracy [3]. Although a high - commendation accuracy can indicate a user's favorite items, there is a fault in that - ly similar items will be recommended. Several studies have reported that users might not be satisfied with a recommendation even though it exhibits high recommendation accuracy [4]. For this reason, we consider that a recommendation having only accuracy is - satisfactory. The serendipity of a recommendation is an important element when c- sidering a user's long-term profits. A recommendation that brings serendipity to users would solve the problem of “user weariness” and would lead to exploitation of users' tastes. The viewpoint of the diversity of the recommendation as well as its accuracy should be required for future recommender systems.

Download or read book Hacking Exposed Mobile written by Neil Bergman and published by McGraw Hill Professional. This book was released on 2013-08-05 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proven security tactics for today's mobile apps, devices, and networks "A great overview of the new threats created by mobile devices. ...The authors have heaps of experience in the topics and bring that to every chapter." -- Slashdot Hacking Exposed Mobile continues in the great tradition of the Hacking Exposed series, arming business leaders and technology practitioners with an in-depth understanding of the latest attacks and countermeasures--so they can leverage the power of mobile platforms while ensuring that security risks are contained." -- Jamil Farshchi, Senior Business Leader of Strategic Planning and Initiatives, VISA Identify and evade key threats across the expanding mobile risk landscape. Hacking Exposed Mobile: Security Secrets & Solutions covers the wide range of attacks to your mobile deployment alongside ready-to-use countermeasures. Find out how attackers compromise networks and devices, attack mobile services, and subvert mobile apps. Learn how to encrypt mobile data, fortify mobile platforms, and eradicate malware. This cutting-edge guide reveals secure mobile development guidelines, how to leverage mobile OS features and MDM to isolate apps and data, and the techniques the pros use to secure mobile payment systems. Tour the mobile risk ecosystem with expert guides to both attack and defense Learn how cellular network attacks compromise devices over-the-air See the latest Android and iOS attacks in action, and learn how to stop them Delve into mobile malware at the code level to understand how to write resilient apps Defend against server-side mobile attacks, including SQL and XML injection Discover mobile web attacks, including abuse of custom URI schemes and JavaScript bridges Develop stronger mobile authentication routines using OAuth and SAML Get comprehensive mobile app development security guidance covering everything from threat modeling to iOS- and Android-specific tips Get started quickly using our mobile pen testing and consumer security checklists

Download or read book e Infrastructure and e Services for Developing Countries written by Gervais Mendy and published by Springer. This book was released on 2019-03-21 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the thoroughly refereed proceedings of the 10th EAI International Conference on e-Infrastructure and e-Services for Developing Countries, AFRICOMM 2018, held in Dakar, Senegal, in November 2018. The 28 full papers were carefully selected from 49 submissions. The accepted papers provide a wide range of research topics including e-health, environment, cloud, VPN and overlays, networks, services, e-Learning, agriculture, IoT, social media, mobile communication and security.

Download or read book Utilitarianism in Victorian England with a special emphasis on Bentham and Mill written by Bettina Klohs and published by GRIN Verlag. This book was released on 2004-06-19 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seminar paper from the year 2003 in the subject English Language and Literature Studies - Culture and Applied Geography, grade: 1,3 (A), University of Leipzig (Institute for Anglistics), course: Seminar: The Virtues of Work. Ethics and Enterprise in Victorian Times., language: English, abstract: Everybody wants to be happy. In order to reach happiness, man throughout history has followed many courses. But what is happiness? The opinions varied largely throughout history. Man has discovered a certain texture of “being”; he has realized that he is both, an individual and a part of a whole, society. According to this, he always made attempts to apply structure on the things and phenomena around him and thus tries to define happiness and find ways to reach and preserve it. True, the different views show certain similarities but there is still no unity today. However happiness might be defined, whether as a “good life”, as contentment or as the absence of physical or mental suffering or anything else, however it is believed to be reached and preserved best, the search for the essence of happiness always seems to be a quest for the holy grail. Otfried Höffe describes happiness as follows 1 : Happiness is an inclusive goal of man. It is not the top of a hierarchy of goals but an attendant circumstance of a success. Happiness is therefore not a thing and it cannot, like many other phenomena, be seen in this light. But things are easily imaginable for the human being. This might be the reason for the difficulties in defining happiness. It is a feature of being human to develop systems to arrange and organize things. Now, if happiness cannot be reified and therefore not be presented as an essence of existence, which is conceivable by everybody in the same way, it may for the present only be described as the satisfaction of the wants and needs of the individual. From this one may conclude that happiness can only be intentio indirecta of public action. Utilitarianism, as a system of ethics, roots in the period of Enlightenment. Based on a humanistic view, it is an important attempt to discuss the question of happiness in a reasonable and non-speculative way and make it a concern of all thinking and feeling creatures. But, as Utilitarianism treated happiness as intentio directa in the name of the principle of utility, Utilitarian overvaluation of mathematics and logic made many problems concerning the applicability of the theory in reality, arise.

Download or read book Location Based Services in Cellular Networks from GSM to 5G NR written by Adrián Cardalda García and published by Artech House. This book was released on 2020-07-31 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: This exciting new book delivers a comprehensive overview of the cellular network architecture, with focus on the positioning applications and emergency call services, and covers aspects brought by 5G, including the core virtualization and the network slicing to optimize cellular network deployments. Focus is given to the different positioning technologies used in cellular networks, divided in satellite positioning, terrestrial radio positioning, non-RF positioning and a brief introduction to sensor fusion and Bayesian theory. It provides an overview of all the positioning technologies used in cellular networks, from GSM to 5G, from RAT independent technologies, such as A-GNSS (including GNSS evolution, RTK and PPP), WiFi, Bluetooth and sensor fusion, to cellular network native technologies, such as OTDOA / DL-TDOA, ECID, multi-cell RTT and the Angle Of Arrival (AOA) based techniques that take advantage of 5G mmWave beamforming features. Different positioning protocols, especially the LTE Positioning Protocol (LPP), which is used for LTE and 5G NR and defines the communication between the user device (mobile phone, connected vehicle, etc.) and the base station are explained extensively, and compares it with other competing protocols such as OMA LPPE. Furthermore, it also explains the core network positioning protocols (LPPa, NRPPa), that describe the communication between the location server and the core network. Explanation of different signaling parameters will enable the reader to understand better how positioning works in a cellular network. The contents of this book are aimed at all types of users, from beginners to the concept of positioning to experts that are looking to enhance their knowledge of positioning in cellular networks.

Download or read book Deixis Types with focus on Time Deixis and Deictic Circle written by Ha Mi Nguyen and published by GRIN Verlag. This book was released on 2018-08-09 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seminar paper from the year 2017 in the subject English Language and Literature Studies - Linguistics, grade: 1,7, University of Vechta, language: English, abstract: In this term paper I will introduce you into the topic “deixis” in the English language, where I will especially focus on one of the main types of deixis: time deixis. First of all, I am going to give a short definition of deixis in general. After that I will mention the types of deixis and give some information about each of them. Moreover, I will explain time deixis in detail and I will also talk about the deictic circle in relation to shifting from the direct into indirect speech with special focus on time deixis.

Download or read book Wireless and Mobile Networking written by Jozef Wozniak and published by Springer. This book was released on 2012-03-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent spectacular achievements in wireless, mobile, and sensor networks have dramatically changed our lives in many ways. However, the rapid evolution of wireless systems not only promises increased functionality, reliability, availability, and security, as well as putting a wide variety of new services at the users’ disposal ? it also creates a number of design challenges that our research community is now facing. Scientists and engineers need to come up with, and promptly implement, novel wireless network architectures, while system operators and planners rethink their business models and attend to the growing expectations of their customer base. To provide a suitable forum for discussion between researchers, practitioners, and industry representatives interested in new developments in the respective research area, IFIP WG 6. 8 launched three separate series of conferences: MWCN (Mobile and Wireless Communications Networks), PWC (Personal Wireless Communications), and WSAN (Wireless Sensor and Actors Networks). In 2008, MWCN and PWC were merged into the IFIP Wireless and Mobile Networking Conference (WMNC 2008), held in Toulouse, France, from September 30 to October 2, 2008. MWNC 2008 and PWC 2008 topics were subsequently revised with a view to covering the whole spectrum of hot issues in wireless and mobile networking. As a result, IFIP WG 6. 8 decided to add WSAN as another WMNC track.

Download or read book Secure Service Provisioning SSP Framework for IP Multimedia Subsystem IMS written by Muhammad Sher and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Changing Television Environments written by Manfred Tscheligi and published by Springer Science & Business Media. This book was released on 2008-06-25 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 6th European Conference on Interactive Television, EuroITV 2008, held in Salzburg, Austria, in July 2008. The 42 revised full papers were carefully reviewed and selected from 156 submissions. The contributions cover significant aspects of the interactive television domain including submissions on user studies, technical challenges related to new developments as well as new kind of formats. The papers are organized in topical sections on interactive TV, interactive authoring, personalisation and recommender systems, mobile TV, social TV, new TV environments, iTV architectures and systems, user interfaces and interaction design, user studies, and accessibility.

Download or read book The 3G IP Multimedia Subsystem IMS written by Gonzalo Camarillo and published by John Wiley & Sons. This book was released on 2005-04-08 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: If you need to know the IMS vision you need to read this book.... The IMS (IP Multimedia Subsystem) is the exciting new technology that will merge the Internet with the cellular world. It will make Internet technologies such as the web, email, instant messaging, presence, and videoconferencing available nearly everywhere. The 3G IP Multimedia Subsystem (IMS) provides a thorough overview of the IMS and its technologies. Throughout, the authors first describe how each technology works on the Internet and then explain how the same technology is adapted to work in the IMS, enabling readers to take advantage of any current and future Internet service. Presents an introduction to the IMS - its goals, history, vision, the organizations involved in its standardization and architecture Discusses the signalling plane of the IMS including protocols, such as SIP and Diameter, used between the IMS architectural entities. Also describes how the IETF developed these protocols and how they are used in the IMS architecture Describes the media plane of the IMS and discusses Internet protocols that are not currently used in the IMS but may be in the future Provides SIP-based service examples such as presence, instant messaging and Push-to-Talk Engineers, programmers, business managers, marketing representatives, and technically aware users will all find this book invaluable as it will help them to understand how the IMS works and the business model behind it.

Download or read book System Engineering for IMS Networks written by Arun Handa and published by Newnes. This book was released on 2009-03-12 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IMS is the foundation architecture for the next generation of mobile phones, wireless-enabled PDAs, PCs, and the like. IMS delivers multimedia content (audio, video, text, etc.) over all types of networks. For network engineers/administrators and telecommunications engineers it will be essential to not only understand IMS architecture, but to also be able to apply it at every stage of the network design process. This book will contain pragmatic information on how to engineer IMS networks as well as an applications-oriented approach for the engineering and networking professionals responsible for making IMS function in the real world. Describes the convergence of wireless IMS (IP Multimedia Subsystem) with other networks, including wireline and cable Discusses building interfaces for end users and IMS applications servers Explores network management issues with IMS

Download or read book Networks and New Services A Complete Story written by Roberto Minerva and published by Springer. This book was released on 2016-09-29 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book shines a spotlight on software-centric networks and their emerging service environments. The authors examine the road ahead for connectivity, for both humans and 'things', considering the rapid changes that have shaken the industry. The book analyses major catalytic shifts that are shaping the communications world: softwarization, virtualization, and cloud computing. It guides the reader through a maze of possible architectural choices, driven by discriminating and sometimes conflicting business considerations. The new ICT capabilities lead us toward smarter environments and to an ecosystem where applications are backed up by shared networking facilities, instead of networks that support their own applications. Growing user awareness is a key driver towards the softwarization process. Softwarization disrupts the current status quo for equipment, development, networks, operations and business. It changes radically the value chain and the involved stakeholders. The dilemma is between a 'slow burn' traditional step-by-step approach and a bold transformation of the whole infrastructure and business models. This book is essential reading for those seeking to build user-centric communication networks that support independent agile and smart applications. “The book gives an insightful account of modern telecom networks, pinpointing the radical transformations of the last 20 years. This is the perfect read for those who are interested in the grand challenges of networks and in the socio-economic reasons why the telecom industry to embrace the Internet of Things and cyber-physical systems.” Prof. Antonio Liotta, Eindhoven University of Technology “This book fulfills an urgent need to thoroughly analyze the entanglement of network and software architectures by taking into account the increasing softwarization. It highlights important issues behind today’s business models and opens the road for sustainable future approaches to provide user appreciated valuable services.” Dr. Eng. Hendrik Berndt, former CTO of NTT DOCOMO Communications Laboratories Europe

Download or read book Operations and Management in IP Based Networks written by Thomas Magedanz and published by Springer Science & Business Media. This book was released on 2005-10-11 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 5th IEEE International Workshop on IP Operations and Management, IPOM 2005, held in Barcelona, Spain, in October 2005. The 21 revised full papers presented were carefully reviewed and selected for inclusion in the book. They are organized in topical sections on operations and management for VoIP, IMS and managed IP services, management of open interfaces, QoS and pricing in NGNs, autonomic communications, policy-based management, routing and topologies, routing and tools, as well as experiences from testbeds and trials.

Download or read book Evolution of Telecommunication Services written by Emmanuel Bertin and published by Springer. This book was released on 2013-10-14 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the telecom world, services have usually been conceived with a specific mindset. This mindset has defined the traditional characteristics of these services; services distinguished by their linkage with the access network, tight control over service use (e.g., authentication, billing), lack of deep personalization capabilities (mass services only) and reliance on standardization to achieve end-to-end interoperability between all the actors of the value chain (e.g., operators, platform manufacturers, device manufactures). This book offers insights into this complex but exciting world of telecommunications characterized by constant evolution, and approaches it from technology as well as business perspectives. The book is appropriately structured in three parts: (a) an overview of the state-of-the-art in fixed/mobile NGN and standardization activities; (b) an analysis of the competitive landscape between operators, device manufactures and OTT providers, emphasizing why network operators are challenged on their home turf; and (c) opportunities for business modeling and innovative telecom service offers.

Download or read book Local Access Network Technologies written by Paul France and published by IET. This book was released on 2004-01-30 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an overview of local access networks and discusses new emerging technologies. Underpinning much of the evolving communications technology is the local access itself, both in traditional form of copper pairs but increasingly too through the use of new fibre, radio and copper systems.