Projects / Programmes source: ARIS

Quality of service and quality of experience measurement and control system in multimedia communications environments

Research activity

Code Science Field Subfield
2.08.00  Engineering sciences and technologies  Telecommunications   

Code Science Field
T180  Technological sciences  Telecommunication engineering 

Code Science Field
2.02  Engineering and Technology  Electrical engineering, Electronic engineering, Information engineering 
Quality of Service (QoS), Quality of Experience (QoE), multimedia communications, Triple play services (3play), Internet Protocol (IP), web services, context-based services, client - server system, ontology, semantic tools, statistics, visualization, interpretation, Policing and Admission Control Systems (PAC), broadband access networks, Service Level Agreement (SLA), emulation, measuring, Internet services, IPTV, xDSL, DOCSIS, FTTH, Ethernet, Long Term Evolution (LTE), Universal Mobile Telecommunications System (UMTS), High Speed Packet Access (HSPA)
Evaluation (rules)
source: COBISS
Researchers (21)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  25234  Marjan Anđelković  Telecommunications  Researcher  2011 - 2014 
2.  03936  PhD Uroš Bogataj  Telecommunications  Researcher  2011 - 2014  73 
3.  08952  PhD Damjan Bojadžiev  Computer science and informatics  Researcher  2011 - 2014  78 
4.  25399  MSc Primož Brajnik  Telecommunications  Researcher  2011 - 2014 
5.  22278  PhD Janez Brank  Computer science and informatics  Researcher  2011 - 2014  94 
6.  33833  Simon Čimžar    Technical associate  2011 - 2014 
7.  28015  PhD Blaž Fortuna  Computer science and informatics  Researcher  2011 - 2014  145 
8.  17137  Marko Grobelnik  Computer science and informatics  Technical associate  2011 - 2014  430 
9.  21394  PhD Iztok Humar  Electric devices  Researcher  2011 - 2014  395 
10.  32732  MSc Luka Koršič  Telecommunications  Researcher  2011 - 2014  18 
11.  16386  PhD Andrej Kos  Computer science and informatics  Head  2011 - 2014  687 
12.  25397  MSc Roman Kotnik  Telecommunications  Researcher  2011 - 2014  13 
13.  10556  PhD Bojana Lunar Peček  Computer science and informatics  Researcher  2011 - 2014 
14.  12570  PhD Dunja Mladenić  Computer science and informatics  Researcher  2011 - 2014  654 
15.  32412  Gregor Rabič  Telecommunications  Researcher  2012 - 2014 
16.  25419  PhD Urban Sedlar  Telecommunications  Researcher  2011 - 2014  161 
17.  02114  PhD Tomaž Slivnik  Systems and cybernetics  Researcher  2011 - 2014  317 
18.  25407  PhD Janez Sterle  Telecommunications  Researcher  2011 - 2014  97 
19.  21346  Maja Škrjanc  Computer science and informatics  Technical associate  2011 - 2014  42 
20.  25409  PhD Mojca Volk  Telecommunications  Researcher  2011 - 2014  121 
21.  25225  MSc Primož Žnidar  Telecommunications  Researcher  2011 
Organisations (3)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0106  Jožef Stefan Institute  Ljubljana  5051606000  88,565 
2.  0118  Kontron, informacije in komunikacijske rešitve, d.o.o. (Slovene)  Kranj  5293162000  386 
3.  1538  University of Ljubljana, Faculty of Electrical Engineering  Ljubljana  1626965  27,578 
In modern communications systems aimed at professional services provisioning, quality assurance at all levels of communication represents a key added value. Quality is generally expressed through two complementary criteria, Quality of Service (QoS) and Quality of Experience (QoE), which complement each other on different levels of service provisioning and system performance. The interpretations of QoS and QoE are not uniform. There is a range of standards and recommendations available for quality-related metrics design and measurement approaches, no guidelines are provided for their implementation into real-world communications environments. Additionally, QoE is subjected to various subjective interpretations regarding the effectiveness of service operation in concrete situations, therefore making the QoE assurance solution design a very complex R&D and applicative challenge. Today QoS and QoE are acquiring new dimensions particularly in terms of new generation of multimedia-rich environments with high degrees of service dynamics, interactivity and underlying IP-based infrastructure. One key aspect is the decreased manageability of such systems and services because of the increasing technological openness and limitless possibilities of choice of services, access methods and terminals. Therefore, in these systems, it is necessary to address quality throughout the entire communications path and measure QoE throughout all levels of communication from the data layer up to the application layer, while bringing the measurements as close to the end-user as possible to capture their quality of experience.   Within the proposed project, a distributed system for measurement and management of the end-user’s quality of experiences will be designed and pilot implemented for heterogeneous communications networks with IP-based backbone and various fixed and mobile broadband access technologies and a variety of multimedia-rich 3Play services. The system will be based on client-server principles. In the client side of the system, agents implemented within terminal, aggregation and network equipment will perform quality-related data measurements based on passive observations and end-users’ activity emulation, and transfer these data in appropriate formats and at defined times into the server side of the system. The server side of the system will aggregate and pre-process the received data, followed by complex data analysis, visualization, interpretation and enrichment, herewith providing indicators for evaluation of achieved end-user’s quality of experience. For this purpose, objective and quantitative QoS and QoE metrics will be defined and appropriate analysis, interpretation and visualisation tools will be designed. The system will be designed non-intrusively with further potential for its implementation into typical admission control systems, profile handling procedures and solutions for QoS and QoE provisioning. For this reason, existent standards, recommendations and scientific findings regarding QoS, QoE and SLA models will be investigated. A set of tests and scenarios for end-user activities emulation will be defined in the form of profiles, and appropriate methods will be given for configuration distribution from server side towards the agents. For a selection of 3Play scenarios and specified distributed pilot environment, a pilot implementation of the system will be provided, established based on professional communications equipment and supported voice, data and video services. Testing and validation of system operation will be performed within laboratory and real-world environments. Feedback will be captured from test end-user groups to verify flexibility and generic nature of the system as a whole as well as to assess used metrics from the viewpoint of their applicability to concrete production communications systems. Herewith, foundations will be provided for further system commercialization activities.
Significance for science
This project holds considerable scientific importance as it addresses highly recognized scientific and research challenges in the area of advanced multimedia-rich communications service provisioning with high degrees of dynamics and tight contextual relations between their contents, quality of operation and quality of the achieved end-user’s experience. As can be observed in recent trends, the concept of communication has dramatically evolved since the rise of multimedia and Internet of Things (IoT), introducing disruptive user and business directions related to communication domain. This in turn incited development of novel communication technologies, solutions and services in the direction of 4G and 5G, with a strong underlying focus on manageable quality of service and quality of experience. The focal theme of this project is a scientific challenge investigating how the quality in such heterogeneous environment can be detected and managed in a structured, objective and automated manner. The conducted research and the achieved results and findings bear relevance for the following scientific areas: • models for mathematical modelling of QoS and QoE, which enables objective and quantitative evaluation of QoE based on network data in near-real-time; • new models of user emulation, which provide novel and non-intrusive mechanisms for observations of performance in complex communications systems based on passive end-user activities monitoring; • tools for advanced QoE visualisation in relation to real-world multimedia scenarios and professional IP-based communications network implementation, suitable for use and integration into existent communication products. The fact that approach to data modelling, analysis, interpretation and visualization is based on real-world data from operational communication networks, captured using distributed agent-based measurement system with high end-to-end penetration into the system, represents crucial foundation to the proposed research work. Since the described system allows for data acquisition within a controlled laboratory environment and also within a broader and highly distributed real-world environment, it bears relevance in the context of providing insights into the dynamics and complex patterns of the quality of user experiences in real-world systems. The results and acquired knowledge in this project represent an important contribution to establishment and further development of objective and quantitative understanding, interpretation, modelling and visualisation of the end-users’ experience in communications systems. The acquired scientific results were evaluated by the consortium partners in the context of their scientific relevance and the corresponding intellectual property. Selected results and findings were transferred in appropriate forms into the Slovenian and international scientific sphere. Herewith, the consortium partners contributed to raising the international visibility of the Slovenian scientific sphere as well as to assure rapid and focused dissemination of the results with the aim of promoting and establishing new research and commercial collaborations.
Significance for the country
In the context of positive impact on further development and positioning of the Republic of Slovenia, the system for quality of experience measurements and the belonging models, technologies and algorithms carry substantial R&D, application and commercial potential. The project results represent a strong IPR base to expand the range of current and development of new products for QoS/QoE measurements and SLA management in communication systems, in particular in quality assurance for business customers. There is also a high potential to establish new service portfolios incorporating end2end QoS/QoE and SLA monitoring and analysis and consulting in the area of quality-aware network planning. The identified products and services are geared towards immediate enhancements to existing portfolios and increased competitiveness in the field of communications systems and services of the Slovenian industry, as well as establishment of new high-tech start-up companies with a potential to enter European and global ICT markets. In this sense, the following short-term impacts of this project are particularly relevant: 1) successful transfer of IPR and productization of the technology, that was developed within this project by the University of Ljubljana, into a Slovenian start-up company; and 2) co-authorship of successfully awarded series of international patents at University of Ljubljana, the content of which is related to implementation of this project. Additionally, impacts of this project further contribute to enhancements of the portfolio of established Slovenian ICT vendors, which bears a positive effect on incrieasing their competitive advanatge on traditional markets as well as entry into new global markets. Aside the above mentioned short-term impacts, further long-term impacts are expected from this project that reach beyond its duration. Further contributions to development, general adoption and promotion of modern heterogeneous communications systems are expected, the professional use of which largely depends on the successful quality provisioning. Also, further positive effects on investment potential are expected as well as stimulation of competitive offers of telecommunications and multimedia products on the market following project impacts. By providing quality results, disseminating the acquired knowledge and experience in recognized publications and events, and setting successful commercialization examples, the consortium partners will continue to contribute to strengthening of global cooperation and knowledge transfer. Herewith, the partners will continue to engage in joint efforts to raise the quality and visibility of the Slovene R&D and industrial sphere on the international scale.
Most important scientific results Annual report 2011, 2012, 2013, final report, complete report on dLib.si
Most important socioeconomically and culturally relevant results Annual report 2011, 2012, 2013, final report, complete report on dLib.si
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