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Dissertations / Theses on the topic 'UMTS Network'

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Published: 4 June 2021
Last updated: 7 September 2023

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1

Oliver, Kathryn E. "UMTS network optimisation." Thesis, Cardiff University, 2005. http://orca.cf.ac.uk/54561/.

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Network operators desire effective, pragmatic solutions to instances of the cell planning problem in order to improve their quality of service, enhance network coverage and capacity capability, and ultimately increase company profits. Previ ous cell plans have been constructed manually but these methods do not produce the best network configuration. More reliance has since been placed on automated cell planning to produce effective solutions. The introduction of the Universal Mobile Telecommunication System (UMTS) emphasizes the need for high perfor mance planning tools. Motivated by a discuss
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2

Datta, Subhalakshmi. "UMTS radio network optimisation." Thesis, University of Surrey, 2010. http://epubs.surrey.ac.uk/843921/.

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Radio network planning and optimisation include tasks such as propagation prediction, performance evaluation, and configuration optimisation. Unlike Time Division Multiple Access (TDMA) based systems, the network performance of Third Generation (3G) cellular systems cannot be based on signal predictions only. The maximum achievable path loss in a Wideband Code Division Multiple Access (WCDMA) cell is dependent on the cell load, which creates a complex trade-off between coverage and capacity. Given a user distribution, network performance calculation involves optimisation of transmit powers tak
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3

Spěváček, Jiří. "Plánování přístupových sítí UMTS." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217448.

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The master thesis is focused on the Universal Mobile Telecommunications System (UMTS) - the third-generation cell phone technology. The first part describes the development of mobile networks and the structure of the UMTS. The second part, the main part of the thesis, is focused on the planning procedure of the UMTS access network. It consists of an explanation of the general planning procedure and a specific project designing the coverage of Pelhřimov surroundings. The final part of the thesis contains a laboratory problem including instructions.
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4

Nourizadeh, Hamed. "UMTS cellular network with relaying concept." Thesis, University of Surrey, 2006. http://epubs.surrey.ac.uk/844065/.

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Wideband Code Division Multiple Access (WCDMA) is one of the technologies for third generation systems. In a CDMA system, all users interfere with each others, therefore the CDMA system is interference limited. The users, who suffer from a strong shadow effect or that are far away from the BS, need more power to reach it. In this case, the users may transmit at their maximum allowed power without satisfying their Quality of Service. Therefore, this would leave some mobiles in outage and also create too much interference to the neighboring cells. One-way to counter this problem and therefore to
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Pathak, Bhumin H. "Video transmission over UMTS mobile radio network." Thesis, Oxford Brookes University, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.432790.

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6

Xu, Kai. "Radio resource management for satellite UMTS : dynamic scheduling algorithm for a UMTS-compatible satellite network." Thesis, University of Bradford, 2009. http://hdl.handle.net/10454/5685.

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The third generation of mobile communication systems introduce interactive Multicast and Unicast multimedia services at a fast data rate of up to 2 Mbps and is expected to complete the globalization of the mobile telecommunication systems. The implementation of these services on satellite systems, particularly for broadcast and multicast applications to complement terrestrial services is ideal since satellite systems are capable of providing global coverage in areas not served by terrestrial telecommunication services. However, the main bottleneck of such systems is the scarcity of radio resou
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Xu, Kai J. "Radio Resource Management for Satellite UMTS. Dynamic scheduling algorithm for a UMTS-compatible satellite network." Thesis, University of Bradford, 2009. http://hdl.handle.net/10454/5685.

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The third generation of mobile communication systems introduce interactive Multicast and Unicast multimedia services at a fast data rate of up to 2 Mbps and is expected to complete the globalization of the mobile telecommunication systems. The implementation of these services on satellite systems, particularly for broadcast and multicast applications to complement terrestrial services is ideal since satellite systems are capable of providing global coverage in areas not served by terrestrial telecommunication services. However, the main bottleneck of such systems is the scarcity of rad
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8

Alesand, Alexander. "Emulating 3G Network Characteristics on WiFi Networks." Thesis, Linköpings universitet, Programvara och system, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-122040.

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Mobile applications should work regardless of which type of wireless interface is used, and should be able to conceal unstable connections from the user to improve user experience. Therefore, network testing is important when developing mobile applications, but it is a challenge to reproduce network conditions when using real cellular networks since the test engineer has no control over the quality of the cellular network. Existing software tools can restrict bandwidth and add latency to the connection, but these tools do not accurately emulate cellular networks. This thesis proposes a system
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9

Kueh, Victor Yong Hwa. "Session establishment over an IP-based satellite UMTS network." Thesis, University of Surrey, 2004. http://epubs.surrey.ac.uk/844560/.

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Arising from the fact that the terrestrial network is becoming more IP-centric, it is crucial to be able to support IP services over the satellite component of UMTS as well to achieve close synergy with the terrestrial counterpart for seamless communication. Nevertheless, the direct utilization of the IP protocol suite in a mobile environment is not straightforward, and when coupled with the additional constraints and shortcomings that satellite-based systems pose, it imposes additional challenges to the integration of satellite systems into the IP-based T-UMTS and the global Internet. In this
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10

Tariq, Javid, and Sohail Sajid. "Robust Home Care Access Network." Thesis, Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-2616.

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<p>Critical networks e.g. telecare services, telemonitoring, are implemented to provide the information security and reliability that the end user desires, especially during an emergency. Unlike business carrier systems that are planned for the general public’s use, critical communication systems are designed particularly for public protection and other serious communication situations. Availability and reliability of such networks is highly desirable. The following thesis works to compare and analyze a variety of communication access technologies to find out the best primary means of data tra
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11

Geerdes, Hans-Florian. "UMTS radio network planning : mastering cell coupling for capacity optimization /." Wiesbaden : Vieweg + Teubner, 2008. http://d-nb.info/990120074/04.

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12

Hildebrand, Matthias. "Optimized network access in heterogeneous wireless networks." Kassel : Kassel Univ. Press, 2005. http://deposit.d-nb.de/cgi-bin/dokserv?idn=977677540.

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13

Havlíček, Karel. "Optimalizace přístupové sítě UMTS." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217447.

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This master’s thesis deals with a UMTS radio access network optimization, containing radio interface analysis, services and procedures description, ways to correct parameters calculations and settings and other issues necessary for a correct access network operation. The goal is effective network operation, minimum costs and maximum performance and flexibility of the network. The optimization during system operation is important because of the system character. The UMTS system uses the WCDMA technology, where particular users share the same frequency band and they are distinguished from one an
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Baloch, Yasir Ali. "UMTS Positioning Methods and Accuracy in Urban Environments." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-73853.

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During the 2nd generation Global System for Mobile Communications (GSM) mobile communication, the focus of the mobile positioning was mostly on call setup and messaging. But the evolution of the 3rd generation Wideband Code Division Multiple Access (WCDMA) has changed the focus of mobile positioning. With the increase use of smart phones the mobile positioning is now extensively used for location based services (LBS’s). Mobile positioning becomes extremely important when the user requests any particular LBS, because it directly affects the communication and resource handling between the networ
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Bednárik, Ján. "Modelování řízeného využití síťových zdrojů v sítích UMTS." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218142.

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The main aim of my master thesis was to get acquainted with the implementation of quality-of-service support methods in UMTS 3G mobile network and the evaluation of these methods in a simulation environment with main interest in the characteristic features of the traffic classes. The impact of the QoS methods available on different service types were verified in the OPNET Modeler simulation environment. I examined mainly the potentials of the model to support the required quality parameters for the connections. The models of typical network applications, available in real UMTS networks, togeth
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Björsson, Anders. "Simulation analysis of RLC/MAC for UMTS in Network Simulator version 2." Thesis, Linköping University, Department of Electrical Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2105.

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<p>The Internet has mainly been interconnecting stationary computers by wired links, but an increasing number of mobile clients require wireless communication. One way to connect these clients is to use the Universal Mobile Telecommunication System, UMTS. UMTS is a third generation mobile system. </p><p>A network can be seen as nodes interconnected by links. The functionality of the nodes can be described as a layered hierarchy. A reference model for this hierarchy was developed by OSI. In this model the second lowest layer is called data link layer. The data link layer is responsible for maki
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17

Cao, Jianguo, and j. cao@student rmit edu au. "An E-Model Implementation for VoIP QoS across a Hybrid UMTS Network." RMIT University. Electrical and Computer Engineering, 2009. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20091028.134854.

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Voice over Internet Protocol (VoIP) provides a new telephony approach where the voice traffic passes over Internet Protocol shared traffic networks. VoIP is a significant application of the converged network principle. The research aim is to model VoIP over a hybrid Universal Mobile Telecommunications System (UMTS) network and to identify an improved approach to applying the ITU-T Recommendation G.107 (E-Model) to understand possible Quality of Service (QoS) outcomes for the hybrid UMTS network. This research included Modeling the hybrid UMTS network and carrying out simulations of different
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18

Iwamura, Mikio. "Network planning and radio resource management for packet transmissions in UMTS Downlink." Thesis, King's College London (University of London), 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.429369.

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19

Jacobs, Fabian Mark. "The effects of network factors on the performance of 3G UMTS applications." Master's thesis, University of Cape Town, 2010. http://hdl.handle.net/11427/12391.

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Includes bibliographical references (leaves 139-148).<br>3G is the wireless network technology expected to allow wireless applications to perform on par with wired applications. However 3G has factors which limit its performance. These factors include both device factors such as small screens, limited battery power and life, as well as network factors such as high delay networks and low bandwidths. This thesis investigates the following: how network factors affect the performance of 3G UMTS applications; which network factors have the most significant impact on a specific application; whether
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Siomina, Iana. "Radio Network Planning and Resource Optimization : Mathematical Models and Algorithms for UMTS, WLANs, and Ad Hoc Networks." Doctoral thesis, Norrköping : Department of Science and Technology, Linköping University, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-9158.

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21

Lu, Zhan-hong. "Wireless multi-media service characterization and its application to UMTS radio network dimensioning." Thesis, Brunel University, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.436584.

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Cuevas, Rodríguez Gabriel Ignacio. "Modelo de Propagación Electromagnética en una Red Utran (Umts Terrestrial Radio Access Network)." Tesis, Universidad de Chile, 2009. http://www.repositorio.uchile.cl/handle/2250/103521.

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En esta memoria se realiza un estudio de propagación de ondas electromagnéticas en una red de tercera generación 3G bajo el estándar UMTS. El trabajo está motivado por la necesidad de formalizar conceptos y procedimientos para el diseño de radio propagación en los sistemas de comunicaciones móviles de tercera generación. El objetivo general es el estudio de la propagación de ondas electromagnéticas en el espacio en el espectro utilizado por la tecnología 3G, mediante la consideración de los factores que la dominan y los principales modelos que las caracterizan. Como resultado se propone un
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Chabalala, Bongani R. "Performance evaluation of AAL2 over IP in the UMTS access network Iub interface." Master's thesis, University of Cape Town, 2005. http://hdl.handle.net/11427/5259.

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Bibliography: leaves 84-86.<br>In this study, we proposed to retain AAL2 and lay it over IP (AAL2IIP). The IP-based lub interface is therefore designed to tunnel AAL2 channels from the Node B to the RNC. Currently IP routes packets based on best-effort which does not guarantee QoS, To provide QoS, MPLS integrated with DiffServ is proposed to support different QoS levels to different classes of service and fast forward the IP packets within the lub interface. To evaluate the performance of AAL2!IP in the Iub interface, a test-bed was created.
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Waltersson, Roland. "Middleware for adaptive network connectivity." Thesis, KTH, Kommunikationssystem, CoS, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-92209.

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As the coverage of modern wireless technologies expands, today’s mobile phones and PDAs often have a range of heterogeneous networks to which they may connect. It would benefit mobile applications to use the network which best corresponds to its need. However, making the handovers between networks transparent to allow communication sessions to survive is not trivial as the TCP/IP suite, used by most networking applications today, was initially not designed with mobility in mind. A Vinnova founded research project at Saab (together with associates1) has found that it could prove advantageous to
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Steinert, Martin. "UMTS - the lagging adoption of a network system innovation : a hypothesis generating empirical study, exploring which factors influence European companies' usage and investment behaviour towards packet switched mobile data services /." Friburg/Switzerland : IIMT University Press, 2006. http://aleph.unisg.ch/hsgscan/hm00192755.pdf.

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Sivagnanasundaram, Suthaharan. "GSM mobility management using an intelligent network platform." Thesis, Queen Mary, University of London, 1997. http://qmro.qmul.ac.uk/xmlui/handle/123456789/3820.

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Mann, Tracy L. "A Network System Level Simulator for Investigating the Interworking of Wireless LAN and 3G Mobile Systems." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/31868.

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Recent research supports the eventual convergence of wireless LAN (WLAN) and cellular systems in order to achieve the IMT-2000 (3G) requirement for 2 Mbps indoor capacities. The WLAN access point can be enhanced to either incorporate or supplant the transmission and packet data capabilities in the cellular network. This research used OPNETâ ¢ to design, implement, and test a network system level simulation environment to allow investigators to study the issues and trade-offs for interworking the infrastructure-based WLAN technologies into 3G mobile subscriber cellular systems. The specific
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Nader, Gustavo. "Ultra Wideband Interference on Third-Generation Wireless Networks." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/30046.

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As a license-exempt technology, Ultra Wideband (UWB) can be used for numerous commercial and military applications, including ranging, sensing, low-range networking and multimedia consumer products. In the networking and consumer fields, the technology is envisioned to reach the mass market, with a very high density of UWB devices per home and office. The technology is based on the concept of transmitting a signal with very low power spectral density (PSD), while occupying a very wide bandwidth. In principle, the low emissions mask protects incumbent systems operating in the same spectrum from
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Klimeš, Roman. "Simulace a vyhodnocení scénářů nasazení služeb reálného času do sítí UMTS v prostředí Opnet Modeler." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218102.

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This work deals with the Universal Mobile Telecommunications System problems. It researches the parameters of influencing the UMTS Terrestrial Radio Access Network behaviour where is the Quality of Services support necessary. The aim of this master’s thesis is the simulation and evaluation of scenarios running real-time UMTS services in Opnet Modeler environment. In the first part is the short introduction to this technology problem. The requirements and the aims, the frequency plan, the network architecture and the Quality of Services support in UMTS are described. Creating the mobile network
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Abad, Camarero Daniel. "Performance analysis of IPv4 / IPv6 protocols over the third generation mobile network." Thesis, KTH, Kommunikationsnät, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-158986.

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Currently, the IPv4 protocol is heavily used by institutions, companies and individuals, but every day there is a higher number of devices connected to the network such as home appliances, mobile phones or tablets. Each machine or device needs to have its own IP address to communicate with other machines connected to Internet. This implies the need for multiple IP addresses for a single user and the current protocol begins to show some deficiencies due to IPv4 address space exhaustion. Therefore, for several years experts have been working on an IP protocol update: the IPv6 128-bit version can
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Hossain, Firoz, and Abu-Shadat-Mohammad Sohab. "Mathematical Modelling of Call Admission Control in WCDMA Network." Thesis, Blekinge Tekniska Högskola, Avdelningen för signalbehandling, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2933.

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WCDMA is an interference limited multiple access technique .It is widely used in the 3rd generation mobile networks like UMTS. When a new call arrives in the system to get admission, it checks whether the call is admitted or not based on some parameters like signal to interference ratio (SIR), transmission power of the Node B and the air interface load .If the call is accepted this will increase some interference to the ongoing calls. This new interference would degrade the ongoing calls and this will also add some extra load which may also lead to the exceeding capacity. So that the system ha
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Jayananthan, Aiyathurai. "TCP performance enhancement over wireless networks." Thesis, University of Canterbury. Electrical and Computer Engineering, 2007. http://hdl.handle.net/10092/1229.

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Transmission Control Protocol (TCP) is the dominant transport protocol in the Internet and supports many of the most popular Internet applications, such as the World Wide Web (WWW), file transfer and e-mail. TCP congestion control algorithms dynamically learn the network bandwidth and delay characteristics of a network and adapt its performance to changes in traffic so as to avoid network collapse. TCP is designed to perform well in traditional wireline networks with the assumptions that packet losses are mainly due to network congestion and random bit error rate (BER) is negligible. Howeve
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Canton, Anne-Florence. "Modélisation et analyse des performances de l'UTRAN : Universal Terrestrial Radio Access Network." Paris, ENST, 2002. http://www.theses.fr/2002ENST0045.

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Les futurs systèmes UMTS devront être capables d'offrir des services bas et haut débit, permettant de transmettre voix, images et video, ainsi que d'effectuer des connexions Internet. Plusieurs niveaux de qualité de service devront donc être gérés. Pour ce faire, une architecture de qualité de service est en cours de normalisation au 3GPP. Cette thèse se propose d'étudier la réalisation de la qualité de service dans les systèmes UMTS. La réalisation de la qualité de service repose notamment sur les performances réalisables sur l'interface air, et l'impact de ces performances sur la qualité de
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Márquez, Barja Johann Marcelo. "SCALABLE AND EFFICIENT VERTICAL HANDOVER DECISION ALGORITHMS IN VEHICULAR NETWORK CONTEXTS." Doctoral thesis, Universitat Politècnica de València, 2012. http://hdl.handle.net/10251/17869.

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A finales de los años noventa, y al comienzo del nuevo milenio, las redes inalámbricas han evolucionado bastante, pasando de ser sólo una tecnología prometedora para convertirse en un requisito para las actividades cotidianas en las sociedades desarrolladas. La infraestructura de transporte también ha evolucionado, ofreciendo comunicación a bordo para mejorar la seguridad vial y el acceso a contenidos de información y entretenimiento. Los requisitos de los usuarios finales se han hecho dependientes de la tecnología, lo que significa que sus necesidades de conectividad han aumentado debido a lo
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Kommalapati, Ravichandra. "Performance of 3G data services over Mobile Networks in Sweden." Thesis, Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-4698.

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The emerging technologies in the field of telecommunications enable us to access high speed data services through mobile handsets and portable modems over the mobile networks. The recent statistics also shows the use of mobile broad band services are increasing and gaining popularity. In this thesis we have investigated the impact of payload size and data rate on one-way delay and packet loss in operational 3G mobile networks, through network level measurements. To collect the network level traces an experimental testbed is developed. For accurate measurement Endace DAG cards together with GPS
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Ceita, Yannick Soares de Barros de. "Shared solution for telecommunications networks." Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/23613.

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Mestrado em Engenharia Eletrónica e de Telecomunicações<br>Despite the substantial increase in the percentage of the globe surface covered by mobile communications, there are issues that have hampered the implementation and development of cellular networks in regions where the market and economic power are still under development. Many of these issues are of economic and financial nature. It is curiously a contradictory fact, since mobile communications on several occasions proved to be a great ally for the growth and economic development of this type of regions. Therefore, in situation
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Wiedemann, Anja. "Development and application of a cellular system simulator for an evaluation of signaling performance and efficiency accepting the challenges of IP-based UMTS radio access network evolution scenarios /." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=984796339.

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Modi, Nikunj. "Performance Evaluation of TCP Variants over UMTS Networks." Thesis, Uppsala University, Department of Information Technology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-98273.

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<p>With the evolution of 3G technologies like Universal Mobile TelecommunicationSystem (UMTS), the usage of TCP has become more popular for a reliable end-to-end (e2e) data delivery. However, TCP was initially designed for wired networks and therefore it suffers performance degradation due to the radio signal getting affected by fading, shadowing and interference. There are many strategies proposed by the research community on how to improve the performance of TCP over wireless links such as introducing link-layer retransmission, explicitly notifying the sender of network conditions or using n
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OLIVEIRA, ROBERTO BATISTA VEREZA DE. "PLANNING OF UMTS NETWORKS AND INTEROPERABILITY ASPECTS WITH GSM/GPRS/EDGE NETWORKS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2007. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=10871@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>O presente trabalho tem como meta analisar os aspectos de planejamento de redes celulares UMTS coexistentes com redes GSM, abordando de forma sintetizada os principais pontos de interesse para as operadoras de telefonia celular móvel que eventualmente estejam considerando a possibilidade de coexistência entre esses sistemas. São abordados de forma especial os processos de interoperabilidade entre as redes UMTS e GSM/GPRS/EDGE.<br>This work has as its purpose to analyze and present on a concise manner the planning aspects for new UMTS
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Liu, Tuo. "Analytical modeling of HSUPA-enabled UMTS networks for capacity planning." University of Sydney, 2009. http://hdl.handle.net/2123/4055.

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PhD<br>In recent years, mobile communication networks have experienced significant evolution. The 3G mobile communication system, UMTS, employs WCDMA as the air interface standard, which leads to quite different mobile network planning and dimensioning processes compared with 2G systems. The UMTS system capacity is limited by the received interference at NodeBs due to the unique features of WCDMA, which is denoted as `soft capacity'. Consequently, the key challenge in UMTS radio network planning has been shifted from channel allocation in the channelized 2G systems to blocking and outage proba
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Yi, Sung Jun. "Performance of multimedia session setup scheme in UMTS wireless networks." Thesis, University of Canterbury. Computer Science and Software Engineering, 2004. http://hdl.handle.net/10092/9622.

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The third generation (3G) of mobile network systems is seen as the technology that will bring the full scope of Internet services to the cellular world. In order to fulfill such ambitious goals, 3G specifications have been evolved into cellular networks with full capabilities of understanding the Internet protocols. The two major protocols proposed, Session Initiation Protocol (SIP) and Session Description Protocol (SDP), are the driving forces of such a merger. They are capable of initiating, modifying and terminating multimedia sessions currently available on the Internet. This project
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Liu, Tuo. "Analytical modeling of HSUPA-enabled UMTS networks for capacity planning." Thesis, The University of Sydney, 2008. http://hdl.handle.net/2123/4055.

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In recent years, mobile communication networks have experienced significant evolution. The 3G mobile communication system, UMTS, employs WCDMA as the air interface standard, which leads to quite different mobile network planning and dimensioning processes compared with 2G systems. The UMTS system capacity is limited by the received interference at NodeBs due to the unique features of WCDMA, which is denoted as `soft capacity'. Consequently, the key challenge in UMTS radio network planning has been shifted from channel allocation in the channelized 2G systems to blocking and outage probabilitie
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Liu, Tuo. "Analytical modeling of HSUPA-enabled UMTS networks for capacity planning." Connect to full text, 2008. http://ses.library.usyd.edu.au/handle/2123/4055.

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Thesis (Ph. D.)--University of Sydney, 2009.<br>Title from title screen (viewed February 20, 2009). Includes graphs and tables. Includes list of publications co-authored with others. Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Information Technologies, Faculty of Engineering and Information Technologies. Degree awarded 2009; thesis submitted 2008. Includes bibliographical references. Also available in print form.
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Fredholm, Kenth, and Kristian Nilsson. "Implementing an application for communication and quality measurements over UMTS networks." Thesis, Linköping University, Department of Electrical Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1666.

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<p>The interest for various multimedia services accessed via the Internet has been growing immensely along with the bandwidth available. A similar development has emerged in the 3G mobile network. The focus of this master thesis is on the speech/audio part of a 3G multimedia application. The purpose has been to implement a traffic generating tool that can measure QoS (Quality of Service) in 3G networks. The application is compliant to the 3G standards, i.e. it uses AMR (Adaptive Multi Rate), SIP (Session Initiation Protocol) and RTP (Real Time Transport Protocol). AMR is a speech compression a
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45

Otárola, Correa Diego Antonio, and Gonzales Frank Campos. "Modernización de la red de acceso de un operador móvil para el caso de Lima Metropolitana." Bachelor's thesis, Universidad Ricardo Palma, 2015. http://cybertesis.urp.edu.pe/handle/urp/1277.

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La presente tesina titulada “Modernización de la red de acceso de un operador móvil para el caso de Lima Metropolitana” expone una propuesta para un operador que tiene como objetivo poder incrementar su cobertura de servicio de segunda y cuarta generación, para esto se definen conceptos teóricos en base a lo que son las tecnologías de telefonía móvil celular de tipo GSM, UMTS y LTE y se compararan con las características técnicas de los equipos que se plantean usar demostrándose que estos pueden optimizar la red de acceso del operador en cobertura y funcionamiento para brindar un mejor servici
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46

Yang, Xiaodong. "Handover issues in DVB-H and in converged DVB-H/UMTS networks." Thesis, Brunel University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.422420.

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Khan, Asiya. "Video quality prediction for video over wireless access networks (UMTS and WLAN)." Thesis, University of Plymouth, 2011. http://hdl.handle.net/10026.1/893.

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Transmission of video content over wireless access networks (in particular, Wireless Local Area Networks (WLAN) and Third Generation Universal Mobile Telecommunication System (3G UMTS)) is growing exponentially and gaining popularity, and is predicted to expose new revenue streams for mobile network operators. However, the success of these video applications over wireless access networks very much depend on meeting the user’s Quality of Service (QoS) requirements. Thus, it is highly desirable to be able to predict and, if appropriate, to control video quality to meet user’s QoS requirements. V
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Vasalos, Ioannis. "Transmission control protocol modelling of dynamical complexity and chaos in UMTS networks." Thesis, University of Newcastle Upon Tyne, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.590041.

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Teletraffic studies in wired networks showed that during peak traffic time chaotic dynamics appear in the network's traffic flows that can induce severe Quality of Service (QOS) degradation and destabilize network grids. The nature of these effects is targeted on the Transmission Control Protocol (TCP) as the dominant transmission protocol for data and Internet applications. These effects suggest that similar behaviour will appear in mobile networks of which the latest evolution is the Universal Mobile Telecommunications System (UMTS). So far there is still a limited understanding of UMTS traf
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49

Crespi, Noël. "Evolutions des architectures de services pour maîtriser l'hétérogénéité de l'IMS." Paris 6, 2006. http://www.theses.fr/2006PA066513.

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SIP (Session Initiation Protocol) est un protocole de signalisation conçu pour le contrôle de session multimédia dans un réseau IP. Le protocole SIP est déjà largement adopté par l’industrie pour les services convergents de prochaine génération qui incluent notamment voix, vidéo, jeux, information de Présence, Chat, conférences multimédia. L’IP Multimedia Subsystem (IMS) constitue l’évolution majeure du Cœur de Réseau UMTS permettant l'utilisation du protocole SIP en adéquation avec les contraintes des réseaux mobiles. L’objet de cette thèse est d’analyser les obstacles existants au déploiemen
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Julínek, Pavel. "Měření a modelování pokrytí bezdrátových sítí." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-221257.

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The diploma thesis describes mobile communication systems GSM and UMTS including the operating principle of these systems. It also deals with the GPS issues and the determination of the location by this system. The signal path losses issues between the transmitter and receiver are also described. The focus is also put on Telit UC864-G model and the measurement system, operated by the created programme with the graphic user interface, which measures parameters of the cellular network according to entered input parameters and saves the measured values into the file. The part of the diploma thesi
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