A unified data repository for rich communication services

Rich Communication Services (RCS) is a framework that defines a set of IP-based services for the delivery of multimedia communications to mobile network subscribers. The framework unifies a set of pre-existing communication services under a single name, and permits network operators to re-use investments in existing network infrastructure, especially the IP Multimedia Subsystem (IMS), which is a core part of a mobile network and also acts as a docking station for RCS services. RCS generates and utilises disparate subscriber data sets during execution, however, it lacks a harmonised repository for the management of such data sets, thus making it difficult to obtain a unified view of heterogeneous subscriber data. This thesis proposes the creation of a unified data repository for RCS which is based on the User Data Convergence (UDC) standard. The standard was proposed by the 3rd Generation Partnership Project (3GPP), a major telecommunications standardisation group. UDC provides an approach for consolidating subscriber data into a single logical repository without adversely affecting existing network infrastructure, such as the IMS. Thus, this thesis details the design and development of a prototypical implementation of a unified repository, named Converged Subscriber Data Repository (CSDR). It adopts a polyglot persistence model for the underlying data store and exposes heterogeneous data through the Open Data Protocol (OData), which is a candidate implementation of the Ud interface defined in the UDC architecture. With the introduction of polyglot persistence, multiple data stores can be used within the CSDR and disparate network data sources can access heterogeneous data sets using OData as a standard communications protocol. As the CSDR persistence model becomes more complex due to the inclusion of more storage technologies, polyglot persistence ensures a consistent conceptual view of these data sets through OData. Importantly, the CSDR prototype was integrated into a popular open-source implementation of the core part of an IMS network known as the Open IMS Core. The successful integration of the prototype demonstrates its ability to manage and expose a consolidated view of heterogeneous subscriber data, which are generated and used by different RCS services deployed within IMS

Study, Analysis and Modeling of IP Multimedia systems on next generation networks providing mobile and fixed multimedia services

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Mobile Presence Information Sharing : Communicating by sharing presence information

The objective of this thesis is to explore the new open standard framework SIMPLE (Session Initiation Protocol for Instant Messaging and Presence Leveraging Extensions) and its ability to provide presence mediated communication between mobile users. To discuss central concepts like communication, mobility, presence, context, awareness and interaction overload I have done a literature study and I present important theories and models to explain these concepts. For giving an overview over new communication options with both voice over IP and GSM available on mobile phones I have made several use cases and scenarios describing these new possibilities To test the abilities of the SIMPLE framework I have made a working prototype setup which allows for sharing of presence information between users. And I also discuss issues with communication that SIMPLE can help resolve

Development of IMS platform applications

Diplomová práce je zaměřena na síť IMS (Internet Protocol Multimedia Subsystem) a vývoj aplikace pro IMS. Architektura IMS představuje sblížení pevných a mobilních sítí, umožňuje rychlé zavádění nových multimediálních služeb. V první kapitole je ukázána a popsána čtyřvrstvá architektura IMS a blokový model architektury IMS. Další kapitola je zaměřena na protokoly, které se používají v IMS. Jedním z nejdůležitějších protokolů je SIP. Tento protokol je rozebrán podrobněji. Pro vývoj aplikace pro IMS platformu bylo použito Ericsson SDS (Service Development Studio) ve verzi 4.1. V SDS byly vytvořeny aplikace typu klient a servlet. V této diplomové práce je také použito vývojové prostředí NetBeans. V NetBeans byla vytvořena aplikace pro správu zachycených snímků. Ve stejném prostředí byla vyvinuta aplikace zobrazující obsah databáze. Poslední kapitola je věnována analýze jednotlivých částí komunikace mezi klientem a servlet, také když klient používá HTTP pro stažení souboru obrázku.This master’s thesis is focused on the network architecture of IMS (Internet Protocol Multimedia Subsystem) and development an application for IMS. IMS architecture is the convergence of fixed and mobile networks. IMS enables rapid deployment of new multimedia services. In the first chapter is showed and described architecture IMS in four layers and block model of architecture IMS. Next chapter is focused to protocols, which are used in IMS. One of the most important protocols in network IMS is SIP. This protocol is analyzed in details. For development IMS platform application was used Ericsson SDS (Service Development Studio) in version 4.1. In SDS were created applications type of client and servlet. In this master’s thesis is also used development environment NetBeans. In NetBeans was created application for management of captured images. In the same development environment was developed application that shows the contents of a database. Last chapter is devoted to analyze individual parts of communication between client and servlet, and when client uses http to download image file.