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Dissertations / Theses on the topic 'SPI communication protocol'

Author: Grafiati

Published: 15 September 2021

Last updated: 30 July 2025

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1

Sharma, Neena. "SERIAL PROTOCOL BRIDGE." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1352403332.

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2

Richert, Adam. "Developing a Portable System for Medicine Dosage." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-235738.

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The project presented in this report is set out to develop a portable electronic system to be used as a medicine pill container. With the functionality to configure up to twelve daily repeated alarms, the purpose of the medicine dosage system is first and foremost to remind the user when they should take their medicine. Secondly, LED lights and user-recorded voice notifications are to be implemented to further aid the user in taking the right medicine each time. The device is also to have a memory log, recording up to one hundred missed dosages, enabling an authorized medicine professional to

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3

Costa, Daniel Gouveia. "Uma arquitetura baseada em SCTP e SIP para suporte a aplica??es VoIP m?veis e a especifica??o formal do seu m?dulo de controle." Universidade Federal do Rio Grande do Norte, 2006. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15461.

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Made available in DSpace on 2014-12-17T14:56:09Z (GMT). No. of bitstreams: 1 DanielGC.pdf: 538651 bytes, checksum: 34bfc134a2af9166b846b044a2968b16 (MD5) Previous issue date: 2006-05-25<br>New versions of SCTP protocol allow the implementation of handover procedures in the transport layer, as well as the supply of a partially reliable communication service. A communication architecture is proposed herein, integrating SCTP with the session initiation protocol, SIP, besides additional protocols. This architecture is intended to handle voice applications over IP networks with mobility requireme

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4

Lakay, Elthea Trevolee. "SIP-based content development for wireless mobile devices with delay constraints." Thesis, University of the Western Cape, 2006. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_9048_1182233050.

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<p>SIP is receiving much attention these days and it seems to be the most promising candidate as a signaling protocol for the current and future IP telephony services. Realizing this, there is the obvious need to provide a certain level of quality comparable to the traditional telephone service signalling system. Thus, we identified the major costs of SIP, which were found to be delay and security. This thesis discusses the costs of SIP, the solutions for the major costs, and the development of a low cost SIP application. The literature review of the components used to develop such a service i

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El, Saghir Bassam. "A new approach for context-aware management of SIP communications." Evry, Institut national des télécommunications, 2009. http://www.theses.fr/2009TELE0009.

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Le secteur mondial de télécommunications a connu des bouleversements sans précédent pendant ces dernières années avec l’avènement de nouveaux services et de nouvelles technologies de communication. Les opérateurs de télécommunications subissent en effet une décroissance continue de leur revenu par utilisateur en raison d’une compétition toujours accrue et, dans une certaine mesure, de la saturation du marché pour les services les plus traditionnels. Afin d’attirer de nouveaux usagers, de retenir ceux qui existent déjà et d’augmenter le revenu par usager, les services de communication proposés

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Troudi, Rami. "Étude, conception et structure de commande temps réel d'un onduleur multiniveau à partir d'une seule source DC ; applications énergies renouvelables et véhicules électriques." Thesis, Poitiers, 2021. http://www.theses.fr/2021POIT2262.

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Les travaux de recherche de la thèse de Rami Troudi répondent à trois problématiques :-la première est de concevoir un onduleur triphasé multiniveau pour des applications à base d’énergies renouvelables connectées au réseau de distribution, ou pour la motorisation des véhicules électriques. Dans la première application, l’utilisation de bras multiniveau limite fortement les inductances de couplage avec le réseau tandis que dans la deuxième application, le couple délivré par le moteur est de meilleure qualité.-la deuxième consiste à concevoir une structure de convertisseur DC-DC permettant de n

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7

Hussain, Intesab. "Solving flooding and SPIT based denial of service problems in voice over IP communications." Electronic Thesis or Diss., Paris 5, 2013. http://www.theses.fr/2013PA05S007.

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Pas de résumé en français<br>Session Initiation Protocol (SIP) is the widely used signaling protocol for voiceand video communication as well as other multimedia applications. Despiteof its flexibility and a common standard that can be leveraged to efficientlycombine a wide array of communication systems and technologies, it is exposedto a number of problems, including the vulnerability to several types of attacksdue to its open nature, in particular, and lack of a clear defense line. Likewise,flooding attack is one of the most destructive attacks targeting both User AgentServer (UAS) and User

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8

Bédard, Normand. "Sécurité d'une application de communication multimédia sous protocole IP dans un contexte médical." Mémoire, Université de Sherbrooke, 2010. http://savoirs.usherbrooke.ca/handle/11143/1530.

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L'application MédiclP est un logiciel de télémédecine permettant à des spécialistes de la santé d'entrer en communication lors de situations d'urgence. Ce prototype, développé depuis 2005, permet des communications audio ainsi que le transfert d'électrocardiogrammes en temps réel. Le scénario typique visé par ce projet était de permettre à une équipe ambulancière qui récupère un blessé sur la route, ou quelqu'un victime d'un malaise cardiaque, d'entrer en contact avec les hôpitaux les plus près afin de déterminer lequel est le plus apte à recevoir adéquatement ce patient. Cette approche permet

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9

Elleuch, Wajdi. "Mobilité des sessions dans les communications multimédias en mode-conférence basées sur le protocole SIP." Thèse, Université de Sherbrooke, 2011. http://hdl.handle.net/11143/5799.

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Ce mémoire traite la problématique de la mobilité des sessions pour le transfert des communications multimédias basées sur le protocole SIP. Plusieurs aspects sont étudiés et des mécanismes proposés afin de permettre la mobilité des sessions avant, durant et après leur établissement. En plus d'une communication impliquant deux intervenants, Il a été possible d'étendre l'utilisation de la mobilité des sessions pour l'appliquer aux scénarios de communications en mode conférence regroupant plusieurs intervenants. Les mécanismes de mobilité de session développés au cours de cette thèse sont par la

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10

Hussain, Intesab. "Solving flooding and SPIT based denial of service problems in voice over IP communications." Thesis, Paris 5, 2013. http://www.theses.fr/2013PA05S007.

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Pas de résumé en français<br>Session Initiation Protocol (SIP) is the widely used signaling protocol for voiceand video communication as well as other multimedia applications. Despiteof its flexibility and a common standard that can be leveraged to efficientlycombine a wide array of communication systems and technologies, it is exposedto a number of problems, including the vulnerability to several types of attacksdue to its open nature, in particular, and lack of a clear defense line. Likewise,flooding attack is one of the most destructive attacks targeting both User AgentServer (UAS) and User

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11

Iqbal, Zeeshan. "Self-Organizing Wireless Sensor Networks For Inter-Vehicle Communication." Thesis, Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-230.

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<p>Now a day, one of the most attractive research topics in the area of Intelligent Traffic Control is </p><p>Inter-vehicle communication (V2V communication). In V2V communication, a vehicle can </p><p>communicate to its neighbouring vehicles even in the absence of a central Base Station. The </p><p>concept of this direct communication is to send vehicle safety messages one-to-one or one-to- </p><p>many vehicles via wireless connection. Such messages are usually short in length and have very </p><p>short lifetime in which they must reach the destination. The Inter-vehicle communication system

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12

Aguilar, Teck. "Vers un protocole de routage géographique avec contention et communications coopératives pour les réseaux de capteurs." Electronic Thesis or Diss., Evry, Institut national des télécommunications, 2010. http://www.theses.fr/2010TELE0032.

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Le routage dans les réseaux de capteurs, est un service essentiel qui transmet les lectures des capteurs à certains points de collecte de données dans le réseau sur la base des relais multi-saut. Cette tâche est particulièrement difficile car elle doit être réalisé d'une manière efficace au niveau de consommation de ressources et avec une quantité limitée d'informations disponible. La facilité de mise à l'échelle et l'utilisation d'information local pour fonctionner ont permis au routage géographique être considéré comme une approche prometteuse. Cependant, lors de son implémentation, certains

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13

Jacobs, Ashley. "Investigating call control using MGCP in conjuction with SIP and H.323." Thesis, Rhodes University, 2005. http://hdl.handle.net/10962/d1006516.

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Telephony used to mean using a telephone to call another telephone on the Public Switched Telephone Network (PSTN), and data networks were used purely to allow computers to communicate. However, with the advent of the Internet, telephony services have been extended to run on data networks. Telephone calls within the IP network are known as Voice over IP. These calls are carried by a number of protocols, with the most popular ones currently being Session Initiation Protocol (SIP) and H.323. Calls can be made from the IP network to the PSTN and vice versa through the use of a gateway. The gatewa

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14

Aguilar, Teck. "Vers un protocole de routage géographique avec contention et communications coopératives pour les réseaux de capteurs." Phd thesis, Institut National des Télécommunications, 2010. http://tel.archives-ouvertes.fr/tel-00612332.

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Le routage dans les réseaux de capteurs, est un service essentiel qui transmet les lectures des capteurs à certains points de collecte de données dans le réseau sur la base des relais multi-saut. Cette tâche est particulièrement difficile car elle doit être réalisé d'une manière efficace au niveau de consommation de ressources et avec une quantité limitée d'informations disponible. La facilité de mise à l'échelle et l'utilisation d'information local pour fonctionner ont permis au routage géographique être considéré comme une approche prometteuse. Cependant, lors de son implémentation, certains

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15

Hsieh, Ming Chih. "Service provisioning in two open-source SIP implementation, cinema and vocal." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1008195.

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The distribution of real-time multimedia streams is seen nowadays as the next step forward for the Internet. One of the most obvious uses of such streams is to support telephony over the Internet, replacing and improving traditional telephony. This thesis investigates the development and deployment of services in two Internet telephony environments, namely CINEMA (Columbia InterNet Extensible Multimedia Architecture) and VOCAL (Vovida Open Communication Application Library), both based on the Session Initiation Protocol (SIP) and open-sourced. A classification of services is proposed, which di

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16

Boongerd, Sanhawad, and Fredrik Lindstein. "Analys av datakommunikationssäkerhet för VoIP-protokoll." Thesis, KTH, Data- och elektroteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-105774.

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Voice over IP (VoIP) is a relatively new technology that enables voice calls over data networks.With VoIP it is possible to lower expenses, and increase functionality and flexibility. FromSwedish Armed Forces point of view, the security issue is of great importance, why the focus inthis report is on the security aspect of the two most common open-source VoIP-protocols H.323and SIP, some of the most common attacks, and counter-measures for those attacks.Because of the level of complexity with a network running H.323 or SIP, and the fact that it hasyet to stand the same level of trial as of trad

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17

Salazar, Gaitàn Oscar. "Statégies de roaming inter-opérateur dans un réseau mobile hétérogène." Paris, ENST, 2007. https://pastel.hal.science/pastel-00003796.

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Dans un futur proche, les technologies d’accès sans fil telles que le WiFi, leWiMAX et l’UMTS coexisteront. Néanmoins, cette coexistence quotidienne ne signifie pas qu’ils seront en mesure d’être pleinement inter-opérationnels. Nous pensons alors que le roaming concernera différents réseaux d’accès gérés par différentes entités : des opérateurs de réseaux cellulaires, des fournisseurs d’accès Internet (FAI) et certaines organisations ou individus. Notre travail de recherche s’articule ainsi autour d’un scénario de roaming hétérogène, concernant les réseaux d’accès sans fil gérés par différents

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18

Shanmugalingam, Sivasothy. "Convergence of web and communication services." Phd thesis, Institut National des Télécommunications, 2012. http://tel.archives-ouvertes.fr/tel-00997697.

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Different communication services from delivery of written letters to telephones, voice/video over Internet Protocol(IP), email, Internet chat rooms, and video/audio conferences, immersive communications have evolved over time. A communication system of voice/video over IP is the realization of a two fundamental layered architecture, signaling layer and media layer. The signaling protocol is used to create, modify, and terminate media sessions between participants. The signaling layer is further divided into two layers, service layer and service control layer, in the IP Multimedia Subsystem (IM

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19

Masri, Aladdin. "Vers le contrôle commande distribué des systèmes de production manufacturiers : approche composant pour la prise en compte de l'architecture de communication dans la modélisation." Phd thesis, Ecole Centrale de Lille, 2009. http://tel.archives-ouvertes.fr/tel-00578841.

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Les systèmes de production manufacturiers sont une classe des systèmes à événements discrets. Leur taille nécessite de distribuer le logiciel de contrôle sur une architecture industrielle de plusieurs ordinateurs reliés en réseau. Dans ce contexte, il devient essentiel d'être capable d'évaluer l'impact d'une architecture réseau spécifique sur les services des systèmes manufacturiers en termes de la performance et la qualité. Les performances du réseau sous-jacent peuvent notamment nuire à la productivité du système. Dans la méthodologie traditionnelle proposée dans la littérature, cet aspect n

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20

Mani, Mehdi. "Stratégies d'overlay de service : d'une architecture centalisée vers le Pair-à-Pair." Paris 6, 2008. http://www.theses.fr/2008PA066188.

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21

Shanmugalingam, Sivasothy. "Convergence of web and communication services." Electronic Thesis or Diss., Evry, Institut national des télécommunications, 2012. http://www.theses.fr/2012TELE0007.

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Les services de communication, du courrier postal à la téléphonie, en passant par la voix et la vidéo sur IP (Internet Protocol), la messagerie électronique, les salons de discussion sur Internet, les visioconférences ou les télécommunications immersives ont évolué au fil du temps. Un système de communication voix-vidéo sur IP est réalisé grâce à deux couches architecturales fondamentales : la couche de signalisation et la couche média. Le protocole de signalisation est utilisé pour créer, modifier et terminer des sessions multimédias entre des participants. La couche de signalisation est divi

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22

Chvátal, Michal. "Řízení dodávky vody v rodinném domě." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442453.

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The diploma thesis deals with the design and implementation of the system that will control the water supply for the family house and its garden. The system aslo allows you to store a history that can be viewed via the web interface. The web interface also allows you to set system parameters and monitor the current status.

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23

El, Kaed Charbel. "Home Devices Mediation using ontology alignment and code generation techniques." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENM002/document.

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Les protocoles plug-and-play couplés avec les architectures logicielles rendent nos maisons ubiquitaires. Les équipements domestiques qui supportent ces protocoles peuvent être détectés automatiquement, configurés et invoqués pour une tâche donnée. Actuellement, plusieurs protocoles coexistent dans la maison, mais les interactions entre les dispositifs ne peuvent pas être mises en action à moins que les appareils supportent le même protocole. En plus, les applications qui orchestrent ces dispositifs doivent connaître à l'avance les noms des services et dispositifs. Or, chaque protocole définit

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24

Spencer, Logan Lemuella C. "Changing from the silo model to the horizontal layers model in public policy regulations : the implications and potential for the telecommunications industry /." Thesis, Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-11282005-192311/.

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25

Chuang, Chihchiang, and 莊智強. "Integrating SIP with Three-way Key and Agreement Exchange Protocol for Secure Multimedia Communications." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/15899236282073643136.

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碩士<br>國立中正大學<br>資訊工程研究所<br>100<br>Network security has become an important issue since various attacks are appearing in the IP network, and the key exchange protocol is one of the most important cryptography mechanisms to protect end-to-end communication by the secret session key encryption. In this paper, we focus on the four-party key exchange protocol in an environment in which two clients are registered under two distinct servers, and both registered parties have to communicate through their corresponding server respectively. We integrate SIP with the three-way key exchange and agreement p

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26

Rambim, Dorothy Apondi. "Transmission control protocol (TCP) and medium access control (MAC) cross-layer enchancement in wireless." Thesis, 2011. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000384.

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M. Tech. Electrical Engineering.<br>Widespread deployment of wireless local area networks (WLANs) and a gradual increase in streaming applications have brought about a demand for improved Quality of Service (QoS) in wireless networks. The IEEE 802.11e standard was proposed to provide QoS mechanisms for assigning high priority to delay-sensitive applications. However, Internet traffic is still dominated by TCP based applications, and the negative effects of the IEEE 802.11e service differentiation scheme on TCP performance in the presence of high priority traffic are becoming a challenging issu

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27

Banda, Laurence. "Improvement of internet protocol (IP) mobility support in vehicular scenarios." 2013. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000343.

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M. Tech. Electrical Engineering.<br>Presents an IPv6-based mobility support scheme for vehicular scenarios. The focus of this study is on modelling of an efficient network layer handover scheme suitable for vehicular network environments. In order to achieve this, a Vehicular Fast handovers for Mobile IPv6 (VFMIPv6) network layer protocol has been proposed.

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Kabiwa, Tchokonte Maxime Stephane. "Development of an improved link metric for routing protocols in wireless ad-hoc networks." 2014. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001649.

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M. Tech. Electrical engineering.<br>Discusses the interference and bandwidth adjusted ETX routing metric uses a logical interference model that refers to the interference arising from the Carrier Sensing Multiple Access with Collision Avoidance (CSMA-CA) based Medium Access Control. This approach of capturing inter-flow is complex and more restrictive. In this dissertation, a more realistic and less restrictive approach based on the information available at the physical layer (signal strength) is used to capture the interference.In contrast to the logical interference model, this has the excel

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29

Calvo, Marcos André Ferreira. "Visual Interactive Voice Response (Visual IVR)." Master's thesis, 2015. http://hdl.handle.net/10316/97335.

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Relatório de Estágio do Mestrado em Engenharia Informática apresentado à Faculdade de Ciências e Tecnologia da Universidade de Coimbra.<br>Since the late 1990’s, companies started to introduce interactive voice response (IVR) systems in their call centers. By querying the customer and receiving the option chosen (number pressed), IVR solutions allows these companies to have universal routing of the calling party (customer) to the service that best suits their needs without requiring a live agent, reducing costs and improving customer experience. Nowadays, with the evolution of mobile tech

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30

Rodrigues, David Alexandre Bento. "Desenvolvimento de um dispositivo portátil de eletrocardiograma." Master's thesis, 2013. http://hdl.handle.net/10316/26152.

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Dissertação de Mestrado em Engenharia Biomédica apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra.<br>As doenças cardiovasculares continuam a liderar o ranking mundial de causas de morte. Este factor, associado àquilo que parece ser um aumento contínuo da população idosa e às limitações de infraestruturas de saúde capazes de dar resposta às suas necessidades, fazem do Ambient Assisted Living (AAL) uma solução cada vez mais válida. O recurso a soluções portáteis que permitem uma monitorização e diagnóstico mais rápido de diversos índices orgânicos, está na origem deste

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