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Dissertations / Theses on the topic 'Vertikal Handover'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Rodríguez, Castillo José María. "Energy-Efficient Vertical Handovers." Thesis, KTH, Kommunikationssystem, CoS, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-118760.

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Recent studies have shown that there are currently more than 1.08 billion of Smartphones in the world, with around 89% of them used throughout the day. On average each of these users transfers more than 450 Mbytes per month via either a cellular network or a Wi-Fi network. So far it has been up to the user to decide which one of these two networks to use at each particular moment. In this master’s thesis, the potential energy savings that could be achieved by means of automating the choice of network interface are explored. This way, the user equipment itself would be able to initiate handover

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Song, Guozhi. "Queueing networks for vertical handover." Thesis, Queen Mary, University of London, 2009. http://qmro.qmul.ac.uk/xmlui/handle/123456789/1823.

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It is widely expected that next-generation wireless communication systems will be heterogeneous, integrating a wide variety of wireless access networks. Of particular interest recently is a mix of cellular networks (GSM/GPRS and WCDMA) and wireless local area networks (WLANs) to provide complementary features in terms of coverage, capacity and mobility support. If cellular/ WLAN interworking is to be the basis for a heterogeneous network then the analysis of complex handover traffic rates in the system (especially vertical handover) is one of the most essential issues to be considered. This th

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3

Pangalos, Paul Anthony. "Vertical handover techniques over heterogeneous networks." Thesis, King's College London (University of London), 2004. https://kclpure.kcl.ac.uk/portal/en/theses/vertical-handover-techniques-over-heterogeneous-networks(d9003a5c-b38a-46f9-8eae-bea57e748c1b).html.

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4

Ickin, Selim. "Implementation of Measurement Module For Seamless Vertical Handover." Thesis, Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5104.

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Research on heterogeneous seamless handover has become popular, since the wireless networking systems were introduced with mobility. The typical current vertical handover mechanism consists of an architecture built at Layer 3 and implemented to serve for different technologies. Even though it has advantages in terms of simplicity, there still exist drawbacks such as the need of adaptation of the network architecture to different network technologies and systems. Providing transparency to the heterogeneous seamless handover can be provided by conducting the handover process at a higher layer. B

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Bassoli, Riccardo. "Network coding for efficient vertical handovers." Thesis, University of Surrey, 2016. http://epubs.surrey.ac.uk/812743/.

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In 2008, Institute of Electrical and Electronics Engineers (IEEE) published its standard IEEE 802.21 for media-independent handover services. The main scope of this work was to design a technology agnostic mobility platform to perform vertical handovers between heterogeneous networks. Regarding vertical handover procedures, a key issue to address is the control of packet loss, which is responsible for high handover latency and low communication quality. The solution proposed by the standard IEEE 802.21 guarantees reliability by exploiting Automatic Repeat Request (ARQ). However, the use of an

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de, Oliveira Nóbrega Obionor. "Modelo para transparência de handover vertical em redes de quarta geração." Universidade Federal de Pernambuco, 2011. https://repositorio.ufpe.br/handle/123456789/2071.

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Made available in DSpace on 2014-06-12T15:54:22Z (GMT). No. of bitstreams: 2 arquivo6810_1.pdf: 6835448 bytes, checksum: c0d7925f9b3d3dc6c0e86c6e611e5cfa (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2011<br>Universidade Federal de Pernambuco<br>Atualmente diversas pesquisas têm sido elaboradas para melhorar o uso da tecnologia móvel pelo usuário final. O desenvolvimento da quarta geração de sistemas de comunicação móveis (4G) possui grandes desafios para a Internet do Futuro (FI). Dentre estes desafios está a transparências de handov

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Balasubramaniam, Sasitharan. "Context-aware vertical handovers for pervasive systems /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18525.pdf.

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8

Ahmed, Tansir [Verfasser]. "Context-Aware Vertical Handover in Heterogeneous Wireless Networks / Tansir Ahmed." Aachen : Shaker, 2007. http://d-nb.info/1164339540/34.

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Kassar-Ben, Jemaa Meriem. "Gestion du handover vertical dans les réseaux sans fil hétérogènes." Paris 6, 2009. http://www.theses.fr/2009PA066742.

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Cette thèse se base sur le besoin pour un utilisateur mobile d'accéder à ses services IP en tout lieu, à tout moment et de la meilleure manière possible (ABC, Always Best Connected). Elle étudie une architecture d'Interworking 3G/UMTS-WLAN en couplage loose pour faire coopérer des réseaux sans fil hétérogènes. Cette architecture, prouvée par sa faisabilité et sa simplicité, se base sur le protocole Mobile IP afin de gérer la mobilité des utilisateurs pour une continuité de service. Cette thèse propose un schéma de gestion du handover contrôlé par le mobile que nous intégrons à l'architecture d

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10

Edia, Adada. "Comparison of vertical handover decision-based techniques in heterogeneous networks." Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/26878.

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Industry leaders are currently setting out standards for 5G Networks projected for 2020 or even sooner. Future generation networks will be heterogeneous in nature because no single network type is capable of optimally meeting all the rapid changes in customer demands. Heterogeneous networks are typically characterized by some network architecture, base stations of varying transmission power, transmission solutions and the deployment of a mix of technologies (multiple radio access technologies). In heterogeneous networks, the processes involved when a mobile node successfully switches from one

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Bonfim, Michel Sales. "Um Mecanismo de Melhoria de Handovers Verticais Utilizando EndereÃamento Multicast e ServiÃos do MIH 802.21." Universidade Federal do CearÃ, 2011. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=7648.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>O uso de dispositivos multi-interface, tais como smart phones, tem crescido ao mesmo tempo que as demandas por melhores serviÃos de mobilidade em redes heterogÃneas. Neste cenÃrio, a ideia da continuidade de serviÃos tornou-se um requisito crucial. Para atender essas demandas, esquemas eficientes de handover devem ser desenvolvidos com o objetivo de alcanÃar o chamado Handover Transparente, que significa a mudanÃa de domÃnios de rede de uma forma transparente e sem a descontinuidade dos serviÃos para o usuÃrio final. Atualmente, ex

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12

Ali, Muhammad. "Load balancing in heterogeneous wireless communications networks : optimized load aware vertical handovers in satellite-terrestrial hybrid networks incorporating IEEE 802.21 media independent handover and cognitive algorithms." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/6307.

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Heterogeneous wireless networking technologies such as satellite, UMTS, WiMax and WLAN are being used to provide network access for both voice and data services. In big cities, the densely populated areas like town centres, shopping centres and train stations may have coverage of multiple wireless networks. Traditional Radio Access Technology (RAT) selection algorithms are mainly based on the 'Always Best Connected' paradigm whereby the mobile nodes are always directed towards the available network which has the strongest and fastest link. Hence a large number of mobile users may be connected

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Yunda, Lozano Daniel. "Improving vertical handover performance for RTP streams containing voice : Using network parameters to predict future network conditions in order to make a vertical handover decision." Thesis, KTH, Kommunikationssystem, CoS, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-92019.

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Wireless local area networks WLAN and Voice over IP technologies enable local low cost wireless telephony, while cellular networks offer wide-area coverage. The use of dual mode WLAN-cellular terminals should allow cost savings by automatically switching from GSM to WLAN networks whenever it is feasible. However, in order to allow user mobility during a call, a handover procedure for transferring a call between the WLAN interface and the cellular network should be defined. The decision algorithm that triggers such a handover is critical to maintain voice quality and uninterrupted communication

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Tawil, Rami. "A distributed vertical handover decision for the fourth generation wireless networks." Paris 6, 2009. http://www.theses.fr/2009PA066113.

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Dans cette thèse nous proposons une décision de handover vertical distribuée (DVHD) pour la quatrième generation des réseaux sans-fils, le DVHD tend à fournir des services continus pour les noeuds mobiles. La quatrième génération de réseau sans fil (FGWN) se compose de réseaux hétérogènes, telles que: Universal Mobile Telecommunication System (UMTS), WiFi et WiMax. Ces technologies fournissent aux utilisateurs une gamme de services qui peuvent être obtenues en se déplaçant entre les réseaux. La question de la mobilité est l'un des intérêts majeurs pour la FGWN, pendant celui-ci, un utilisateur

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ZEKRI, Mariem. "Mobility management and vertical handover decision making in heterogeneous wireless networks." Phd thesis, Institut National des Télécommunications, 2012. http://tel.archives-ouvertes.fr/tel-00814578.

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Mobility management over heterogeneous wireless networks is becoming a major interest area as new technologies and services continue to proliferate within the wireless networking market. In this context, seamless mobility is considered to be crucial for ubiquitous computing. Service providers aim to increase the revenue and to improve users' satisfaction. However there are still many technical and architectural challenges to overcome before achieving the required interoperability and coexistence of heterogeneous wireless access networks. Indeed, the context of wireless networks is offering mul

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Fernando, Aniz Ferreira Colares Isac. "Handover vertical centrado no usuário com suporte do padrão ieee 802.21." Universidade Federal de Pernambuco, 2011. https://repositorio.ufpe.br/handle/123456789/2717.

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Made available in DSpace on 2014-06-12T16:00:36Z (GMT). No. of bitstreams: 2 arquivo6790_1.pdf: 1724338 bytes, checksum: 1acef95f16a08ed5cc23c8696c799e0e (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2011<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Atualmente, os terminais móveis possuem diferentes interfaces de redes, o que possibilita ao usuário estar conectado à Internet por diferentes tecnologias de acesso sem fio. Esta característica é a base para as redes de quarta geração (4G). Nesse ambiente heterogêneo sem

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Zekri, Mariem. "Mobility management and vertical handover decision making in heterogeneous wireless networks." Thesis, Evry, Institut national des télécommunications, 2012. http://www.theses.fr/2012TELE0002/document.

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L’évolution des technologies réseaux sans fil, des terminaux mobiles ainsi que des contenus et des services créent des environnements hétérogènes de plus en plus complexes. Dans ce contexte, un compromis entre la mobilité, la transparence et la performance apparaît. Des utilisateurs mobiles, ayant différents profils et préférences, voudraient être toujours connectés au meilleur réseau à tout moment, sans avoir à se soucier des différentes transitions entre réseaux hétérogènes. Face à cette complexité, il parait nécessaire de proposer de nouvelles approches afin de rendre ces systèmes plus auto

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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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Chen, Liang. "Survey of Mobile Communication Systems and Handover." Thesis, Linköping University, Department of Electrical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-12002.

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<p>After more than two decades’ development, modern mobile cellular networks now have almost approached to the commercial level of fourth generation communication networks. For each of the mobile solutions, there are special attributes but also similarities compared to the other competitive solutions. We can also find relationships between the old generation solutions and the inheritors or innovations.</p><p>During the communicating session using any kind of existing mobile handset, the handover procedure is a very important one that may effect connection quality and also the phone call contin

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de, Melo Vasconcelos Eduardo. "Vetores gravitacionais: um método para a predição de caminhos em redes heterogêneas." Universidade Federal de Pernambuco, 2011. https://repositorio.ufpe.br/handle/123456789/2425.

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Made available in DSpace on 2014-06-12T15:58:06Z (GMT). No. of bitstreams: 2 arquivo3254_1.pdf: 2461964 bytes, checksum: ee6651fba198053b9390d4e1c2f5c45d (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2011<br>Espera-se que a Internet do Futuro permitirá aos usuários grandes taxas de transferência de dados, mobilidade e heterogeneidade de conexão transparente e ubíqua. Para que isto seja possível, devem existir mecanismos que permitam a manutenção da conectividade dos Terminais Móveis (TM), mesmo quando estiverem se deslocando entre divers

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Liu, Li. "A QoE-driven vertical handover management framework for multimedia services over wireless networks." Thesis, University of Plymouth, 2017. http://hdl.handle.net/10026.1/10042.

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With advances in wireless technology and mobile devices, the number of mobile users using multimedia services has increased significantly in recent years. Mobile devices can be connected and roam on heterogeneous wireless networks. The IEEE 802.21 group has designed a Media Independent Handover (MIH) standard to ensure seamless Vertical Handover (VHO) in heterogeneous networks. However, the standard currently depends on features of the network (e.g. the type of network and available bandwidth) to achieve seamless VHO. This approach is limited, as it does not consider how a Quality of Experienc

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Bonfim, Michel Sales. "Um Mecanismo de melhoria de handovers verticais utilizando endereçamento multicast e serviços do MIH 802.21." reponame:Repositório Institucional da UFC, 2011. http://www.repositorio.ufc.br/handle/riufc/18503.

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BOMFIM, Michel Sales. Um Mecanismo de melhoria de handovers verticais utilizando endereçamento multicast e serviços do MIH 802.21. 2011. 103 f. Dissertação (Mestrado em ciência da computação)- Universidade Federal do Ceará, Fortaleza-CE, 2011.<br>Submitted by Elineudson Ribeiro (elineudsonr@gmail.com) on 2016-07-11T19:38:38Z No. of bitstreams: 1 2011_dis_msbonfim.pdf: 3117026 bytes, checksum: 19ea0e074c6fbc2bcfe5f4bf287e7889 (MD5)<br>Approved for entry into archive by Rocilda Sales (rocilda@ufc.br) on 2016-07-20T12:06:35Z (GMT) No. of bitstreams: 1 2011_dis_msbonfim.pdf: 3117026 bytes, checksu

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Battaglia, Arthur Fernando Arnold. "Proposta de modelo para continuidade da qualidade de serviço percebida pelo usuário final através de handover vertical." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-16072013-111348/.

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O segmento das comunicações, já há alguns anos, vem passando por significativas transformações exigindo a interação entre ambientes tecnológicos convergentes heterogêneos, com qualidade na continuidade de serviços, para se manter competitivo, pois é este mercado que exige, constantemente, que mais recursos tecnológicos lhe sejam colocados à disposição. O ineditismo da proposta desenvolvida neste trabalho é a elaboração de um modelo para assegurar a continuidade da qualidade de serviço percebida pelo usuário final através de handover (ou handoff) vertical, o que caracteriza-se como uma necessid

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Abuhaija, Belal Saleh. "A simulation framework for service continuity over multi access wireless networks." Thesis, University of South Wales, 2010. https://pure.southwales.ac.uk/en/studentthesis/a-simulation-framework-for-service-continuity-over-multi-access-wireless-networks(5b370ae0-47b2-43b7-b0f2-91b1fd5fd3b8).html.

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Mobile communication systems have continued to evolve by the release of new standards for HSPA and the release of new standards for LTE in release 8 and release 9. The new releases aim at providing higher data rates to accommodate the envisioned services of 3GPP in voice, data, image transmission, video, multimedia service and broadband services. Catering for a wide variety of services to satisfy the demands imposed on mobile networks by the user diversity and demanding applications, the air interface has been identified as the major bottleneck in the mobile networks. Network planning engineer

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Martelli, Matteo. "Design and development of a software architecture for seamless vertical handover in mobile communications." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/12237/.

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In this work I firstly present an overview on current wireless technology and network mobility focusing on challenges and issues which arise when mobile nodes migrate among different access networks, while employing real-time communications and services. In literature many solutions propose different methods and architectures to enhance vertical handover, the process of transferring a network communication between two technologically different points of attachment. After an extensive review of such solutions this document describes my personal implementation of a fast vertical handover

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Khattab, O. A. O. "Improving initiation, decision and execution phases for vertical handover in heterogeneous wireless mobile networks." Thesis, University of Salford, 2014. http://usir.salford.ac.uk/32114/.

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One of the challenging issues in Next Generation Wireless Systems (NGWS) is seamless Vertical Handover (VHO) during the mobility between different types of technologies (3GPP and non-3GPP) such as Global System for Mobile Communication (GSM), Wireless Fidelity (Wi-Fi), Worldwide Interoperability for Microwave Access (WiMAX), Universal Mobile Telecommunications System (UMTS) and Long Term Evolution (LTE). Therefore, the telecommunication operators are required to develop an interoperability strategy for these different types of existing networks to get the best connection anywhere, anytime with

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Al, Ridhawi Ismaeel. "Simulation-Assisted QoS-Aware VHO in Wireless Heterogeneous Networks." Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30377.

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The main goal of today’s wireless Service Providers (SPs) is to provide optimum and ubiquitous service for roaming users while maximizing the SPs own monetary profits. The fundamental objective is to support such requirements by providing solutions that are adaptive to varying conditions in highly mobile and heterogeneous, as well as dynamically changing wireless network infrastructures. This can only be achieved through well-designed management systems. Most techniques fail to utilize the knowledge gained from previously tested reconfiguration strategies on system and network behaviour. This

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Campacci, Rodrigo Bellotto. "Handover vertical em redes NGN: integrando a sinalização do domínio de comutação de circuitos e o IMS." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-15092008-152814/.

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Este trabalho visa estudar e implementar a integração entre o domínio de comutação de circuitos e o IP Multimedia Subsystem (IMS) para suportar handovers verticais, ou seja, entre redes de acesso distintas, por exemplo, Global System for Mobile communications (GSM) e WiFi, em especial no Serviço Voice Call Continuity (VCC). Entretanto muito pouco é especificado sobre a integração entre os domínios nas normas das diversas entidades de padronização que tratam sobre o assunto. Assim, apresenta-se uma proposta para essa integração, criando-se uma nova entidade funcional para realizá-la, o Call Dat

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Liu, Bin. "Mécanismes de handover inter système 3G-WiMAX. Etude des performances comparées d'une approche basée sur IP et d'une approche utilisant des protocoles radio de niveau 2." Phd thesis, Télécom ParisTech, 2009. http://pastel.archives-ouvertes.fr/pastel-00005775.

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Résumé Dans les futurs réseaux mobiles, différentes technologies d'accès radio, telles que GSM, UMTS, WiMAX, WIFI coexisteront. Pour réaliser un handover vertical sans couture (handover inter-RAT) entre ces technologies, des architectures d'interconnexion et des moyens pour gérer le handover inter-RAT sont proposés. Afin de proposer une solution efficace, nous allons d'abord analyser la solution " Fast MIPv6 (FMIPv6) ". Les analyses numériques démontrent les défauts de FMIPv6 et les exigences de handover inter-RAT. En considérant une architecture de couplage intégré (integrated coupling), nous

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Fernandez, Jean Eli Cerrillo. "A cognitive mechanism for vertical handover and traffic steering to handle unscheduled evacuations of the licensed shared access band." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/169331.

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There has been a steady growth in the traffic generated by Mobile Network Operators (MNOs), and by 2020 it is expected to overload the existing licensed spectrum capacity and lead to the problem of scarce resources. One method to deal with this traffic overload is to access unlicensed and shared spectrum bands using an opportunistic approach. The use of Licensed Shared Access (LSA) is a novel approach for spectrum sharing between the incumbent user (i.e., the current owner of the shared spectrum) and the LSA licensee (i.e., the temporary user of frequencies, such as an MNO). The LSA system all

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Benmammar, Badr. "La gestion dynamique de la qualité de service dans les réseaux IP mobiles." Bordeaux 1, 2006. http://www.theses.fr/2006BOR13160.

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Notre contribution dans le cadre de cette thèse est la proposition d'une nouvelle procédure de réservation de ressources à l'avance dans les réseaux IP mobiles et sans fil. Cette procédure fait appel à un nouvel objet nommé MSpec (Mobility Specification) qui représente lesfutures localisations du terminal mobile. Nous avons proposé un format pour cet objet ainsi qu'un profil de mobilité pour les utilisateurs mobiles qui inclut l'objet MSpec. Ce profil de mobilité découle de l'analyse du comportement de l'utilisateur durant une phase d'observation. Nous avons proposé, également, une extension d

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Al-Rubaye, Atheer [Verfasser], Jochen [Akademischer Betreuer] Seitz, Kai-Uwe [Gutachter] Sattler, and Jochen [Gutachter] Schiller. "Vertical handover management with quality of service support / Atheer Dhiaa Al-Rubaye ; Gutachter: Kai-Uwe Sattler, Jochen Schiller ; Akademischer Betreuer: Jochen Seitz." Ilmenau : Universitätsbibliothek Ilmenau, 2017. http://d-nb.info/1147875960/34.

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Sethom, Kaouthar. "Gestion de la mobilité dans les réseaux sans fil de nouvelle génération." Paris 6, 2006. http://www.theses.fr/2006PA066410.

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Ricardo, Claudia Arezio. "Otimização do processo de decisão no handover vertical em redes baseadas no subsistema multimídia IP (IMS) / Claudia Arezio Ricardo ; orientador, Mauro Sérgio Pereira Fonseca." reponame:Biblioteca Digital de Teses e Dissertações da PUC_PR, 2009. http://www.biblioteca.pucpr.br/tede/tde_busca/arquivo.php?codArquivo=1671.

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Dissertação (mestrado) - Pontifícia Universidade Católica do Paraná, Curitiba, 2009<br>Bibliografia: f. 74-78<br>A migração para sistemas convergentes construídos sobre a arquitetura IMS deve atender aos requisitos de disponibilidade de serviços e de mobilidade em tecnologias heterogêneas. Essa transição acontece através do emprego das normas previstas no 3GPP para<br>Transition to convergent systems built over the IMS architecture should attempt to service availability and mobility requirements in heterogeneous technologies. This migration is already taking place while networks based on 3GPP

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Wiethölter, Sven Verfasser], Adam [Akademischer Betreuer] Wolisz, Andreas [Akademischer Betreuer] [Timm-Giel, and Axel [Akademischer Betreuer] Küpper. "Support of resource-aware vertical handovers in WLAN hotspots / Sven Wiethölter. Gutachter: Adam Wolisz ; Andreas Timm-Giel ; Axel Küpper. Betreuer: Adam Wolisz." Berlin : Technische Universität Berlin, 2014. http://d-nb.info/1066162913/34.

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Wiethölter, Sven [Verfasser], Adam Akademischer Betreuer] Wolisz, Andreas [Akademischer Betreuer] [Timm-Giel, and Axel [Akademischer Betreuer] Küpper. "Support of resource-aware vertical handovers in WLAN hotspots / Sven Wiethölter. Gutachter: Adam Wolisz ; Andreas Timm-Giel ; Axel Küpper. Betreuer: Adam Wolisz." Berlin : Technische Universität Berlin, 2014. http://d-nb.info/1066162913/34.

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Badis, Hakim. "Etude et conception d'algorithmes pour les réseaux mobiles et ad hoc." Paris 11, 2005. https://tel.archives-ouvertes.fr/tel-00637112.

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AVEC LES PROGRÈS RÉALISÉS DANS LES RÉSEAUX SANS FIL El MOBILES, CHERCHEURS ET INDUSTRIELS ONT DÉJÀ COMMENCÉ LE DÉVELOPPEMENT DES FUTURS RÉSEAUX MOBILES DE 4ÈME GÉNÉRATION (4G). DANS CETTE GÉNÉRATION, L'ÉQUIPEMENT TERMINAL, DE L'UTILISATEUR RECHERCHERA EN PERMANENCE LE MEILLEUR RÉSEAU D'ACCÈS EN FONCTION DES BESOINS DE L'UTILISATEUR. CE DERNIER AURA PLUSIEURS TECHNOLOGIES D'ACCÈS SANS FIL À SA DISPOSITION ET SOUHAITERA ÊTRE CONNECTÉ AU MIEUX, N'IMPORTE OÙ, N'IMPORTE QUAND ET AVEC N'IMPORTE QUEL RÉSEAU D'ACCÈS. POUR CELA, LES DIFFÉRENTES TECHNOLOGIES SANS FIL QUI SERONT PRÉSENTES DANS LA 4G (UMT

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Tuyisenge, Livinus. "CoVEceVé - Collecte des données Véhicule/Environnement et remontée avec réseau Cellulaire et réseau Véhiculaire. Network Architectures in Internet of Vehicles (IoV): Review, Protocols Analysis, Challenges and Issues Handover Mechanisms in Internet of vehicles (IoV): survey, Trends, Challenges, and Issues." Thesis, Reims, 2019. http://www.theses.fr/2019REIMS023.

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Le transfert vertical intercellulaire est l’une des technologies clés qui facilitera le déploiement de véhicules connectés et autonomes. Aujourd’hui, l’émergence des réseaux véhiculaires : les communications de véhicule à véhicule (V2V), véhicule à infrastructure (V2I) et de véhicule à tout (V2X) a permis de nouvelles applications telles que les Systèmes de Transport Intelligents Coopératifs (C-ITS), les applications temps réel (par exemple, la conduite autonome), applications de gestion du trafic routier et applications de confort. Cependant, ces réseaux se caractérisent par une grande mobili

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Badr, Benmammar. "La gestion dynamique de la qualité de service dans les réseaux IP mobiles." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2006. http://tel.archives-ouvertes.fr/tel-00657640.

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Notre contribution dans le cadre de cette thèse est la proposition d'une nouvelle procédure de réservation de ressources à l'avance dans les réseaux IP mobiles et sans fil. Cette procédure fait appel à un nouvel objet nommé MSpec (Mobility Specification) qui représente les futures localisations du terminal mobile. Nous avons proposé un format pour cet objet ainsi qu'un profil de mobilité pour les utilisateurs mobiles qui inclut l'objet MSpec. Ce profil de mobilité découle de l'analyse du comportement de l'utilisateur durant une phase d'observation. Nous avons proposé, également, une extension

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AFGHANI, AHMAD. "Reliable Real-Time Communication for Future ITS (Intelligent Transport Systems) using HWA (Heterogeneous Wireless Access)." Thesis, Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-16364.

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In this research oriented master’s thesis we have proposed a future vision of ITS (Intelligent Transport Systems) by utilizing the novel concept of HWA (Heterogeneous Wireless Access). Our proposal is backed by the investigation of the results of experiments conducted at CERES (Centre for Research on Embedded Systems), Halmstad University, Sweden to evaluate the quality of communication for V2V and V2I by using the IEEE 802.11p standard. We have also identified the expected scenarios with need of any other communication technology in replacement of IEEE 802.11p for V2V and V2I communication. W

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Oliveira, Marcelino Nascimento de. "Avaliação de desempenho de serviços emergenciais de saúde em redes sem fio heterogêneas." Pós-Graduação em Ciência da Computação, 2014. https://ri.ufs.br/handle/riufs/3365.

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The health applications aimed at monitoring patients remotely have reached great proportions with the advancement of wireless networks. This paper presents a study of performance evaluation of biosignal traffic, which was simulated the transmission of patient data in emergency situations. The simulation scenario considered the transmission of signals from an ambulance through wireless network and collected in a medical monitoring center. On the way to the hospital, while the mobile broadcast biosignals moved between areas covered by different network technologies, featuring vertical handover s

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Gami, Prashant Prabhulal. "Network controlled vertical handover for heterogeneous networks." 2008. http://hdl.handle.net/2100/1105.

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Future wireless networks are expected to be a convergence of different wireless networks based on single Radio Access Technology. The aim is to provide seamless services to users any time from anywhere in the world using proper devices. In order to achieve this goal, seamless transition from one network to another with acceptable quality of service is required. Handover from one network to another is known as inter network or vertical handover. Currently known Mobile Controlled Vertical Handover schemes have some limitations. Mobile Station is limited with power and has very limited informatio

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Yi-Chung, Chen, and 陳怡中. "Network Cost Minimization for Seamless Vertical Handover." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/qw6k6z.

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碩士<br>國立交通大學<br>電信工程系所<br>92<br>In the next generation of mobile system, it is expected to support the concept of Always Best Connected (ABC). Besides, from user’s perspective, the seamless vertical handover for real-time service is also very important. Therefore, in this thesis, we focus on the integration of 3G UMTS and WLAN through loosely-coupled interworking architecture, and propose a scheme called “Designated Crossover Point” (DCP) to execute vertical handover in a fast way. Next, we let the DCP to handover to increase routing efficiency, and finally, by the value iteration method of Ma

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Su, Yang-Shan, and 蘇揚善. "Efficient Two-Way Vertical Handover with Multipath TCP." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/mjfa3s.

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碩士<br>國立中央大學<br>通訊工程學系<br>104<br>Nowadays, with the evolution of smart devices, mobile nodes are commonly equipped with multiple communication interfaces, for example: WLAN, 3G, WiMAX and LTE. Users and network operators can benefit from multipath TCP to achieve more reliable and efficient video streaming in heterogeneous networks. Two things are the users need. First, it always keeps the best connection in services or devices anywhere at any time. Second, it keeps service continuous and seamless handover to another network interface. Multi-path TCP (MPTCP) is an extension of TCP that allow

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Hsu, Chih-Peng, and 許志鵬. "Using MIH for Vertical Handover between Wi-Fi and WiMAX." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/95869543622934972811.

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博士<br>淡江大學<br>資訊工程學系博士班<br>97<br>Wireless hotspots based on IEEE 802.11 wireless LAN (WLAN) have become very popular for providing different data services to wireless Internet users. The evolving family of IEEE 802.16 -based wireless metropolitan area network (WMAN) technologies is a promising solution to provide backhaul support for WLAN hotspots. The integrated network of WLAN and WMAN can take advantage of them to offer high quality of service (QoS). Seamless handover between different wireless systems is possible while the Internet’s QoS mechanisms are difficult to integrate into the hando

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Wang, Po-Chien, and 王博謙. "A Study on Vertical Handover Scheme over Heterogeneous Wireless Network." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/16192411025711537547.

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碩士<br>國立交通大學<br>網路工程研究所<br>100<br>In recent years, various wireless technologies such as Wi-Fi, WiMAX and LTE have advanced very rapidly. These technologies allow users to access a variety of services provided on the Internet anytime and anywhere using mobile devices. Computation power of mobile devices also becomes very powerful, and able to provide multihoming connection to heterogeneous wireless networks at the same time. Therefore, vertical handover becomes an essential issue. A mobile node moving out of the coverage area of a wireless network will cause disruption of the connection. And M

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Lin, I.-Cheng, and 林一成. "Improvement of Vertical Handover Performance in Heterogeneous Network with SCTP." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/83386287677618170936.

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碩士<br>國立高雄應用科技大學<br>電子與資訊工程研究所碩士班<br>96<br>A heterogeneous wireless network integrating IEEE 802.11 WLAN and 3G/UMTS mobile phone system will be a common scenario in future mobile networking. The multi-homing feature of SCTP and the dynamic address configuration extension had made seamless vertical handover possible in heterogeneous mobile wireless networks. However, due to the switching of radio interfaces and the attenuation of radio signal, the SACK could get lost during the handover process. This will result in unnecessary retransmission after the handover and lead to degradation in networ

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Chou, Chie Ming, and 周建銘. "A Novel Vertical Handover Control Algorithm for WLAN and UMTS." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/17059424744664385456.

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碩士<br>國立交通大學<br>電子工程系所<br>93<br>How to design an effective and smooth vertical handover algorithm is a trend for the integrated system to achieve the high-speed transmission, high mobility, and satisfied QoS. In this thesis, a novel vertical handover control algorithm, consisting of a throughput-based mapping function, QoS-based dynamic handover thresholds, and performance-based trigger timers, are proposed to resolve uncommon pilot problems, QoS requirements, and ping-pong effects, respectively. An analytic model based on a finite state machine is developed to evaluate the proposed algorithm

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Giacomini, David. "Vertical Handover Decision Making Using QoS Reputation and GM(1,1) Prediction." Thesis, 2012. http://spectrum.library.concordia.ca/974727/4/Giacomini_MASc_F2012.pdf.

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Telecommunication consumers are fueling a demand for mobile devices that are rapidly increasing in their capability to provide a wider range of services. These services in turn are consuming more bandwidth and require richer quality of service (QoS) in order to ensure a good end user experience when performing activities such as streaming video content or facilitating voice over IP (VoIP). As a result, network providers are expanding and improving their coverage area while technology to establish Wi-Fi hotspots is becoming more accessible to every day users. This combination of increase in

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Yeh, Ming-Hao, and 葉民豪. "Prediction-based Vertical Handover Scheme for LTE-Advanced Mobile Relay Systems." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/80998459633072097761.

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碩士<br>國立暨南國際大學<br>資訊工程學系<br>102<br>Long Term Evolution is one of 3rd Generation Partnership Project (3GPP) standard developed as a fourth-generation mobile communications standard. In order to solve signal strength problem when the user equipment (User Equipment, UE) located at the edge of the signal converge of the LTE base station (Evolved Node, eNB) a new entity called relay node (Relay Node, RN) was introduced in LTE-Advanced by 3GPP. RN has low-power, low-cost features, and can be used to enlarge the eNB radio signal coverage. Th

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