Subject of this thesis was the issue of effectiveness of wireless networks from the perspective of services. Become acquainted with WiFi network standard IEEE 802.11 with protocols and principles of WiFi networks and services. It should be focused on the quality of service QoS. In teoretical part of this thesis are described problems considering wireless networks, layer model and types of nets used in WiFi. Standard IEEE 802.11 is analysed in details including supplements and used packets. Special attention is paid to the quality of service QoS. Next are discussed the principles and application services as VoIP, videoconferencing, video streaming and others in WiFi network. On the basis of obtained knowledge is designed extensive WiFi network with assured supply of services. For modelling and simulation of wireless network is used software development environment Opnet Modeler. Model of wireless network is used to optimize and analyse this wireless communication network. In thesis are also simulated properties of data which are sensitive to delay. In last part of thesis is created a laboratory work, which contains a submission of task, detailed theory, wiring diagram, instructions for elaboration, guidelines for simulation and example of elaboration of task. Work is about comparison of network with used 802.11b and 802.11e standard, and support of quality of service QoS.

This diploma thesis deals with switching components of modern communication networks. A switch architecture focused on the quality of service is described in this paper and there are two switch models designed and simulated in the simulating program MATLAB-SIMULINK. The first model is based on classic switching and the other one is controlled by neural network. A laboratory exercise suitable for communication networks education is created in this paper on the basis of designed models.

This master’s thesis is focused on ensuring of Quality of Service (QoS) in wireless network for standards IEEE 802.11 a/b/g/n. First part of this thesis is focused on the theory of this issue. It covers methods of data transfer in computer networks and individual transfer parameters especially on parameters needed to ensure quality of service. It also describes standards for wireless data transmission and protocols for real time data transmission. The second part is devoted to OPNET modeler and to simulations created on this program. Simulations are focused on real-time data transfer and compare the standards in terms of delay and jitter.

This master thesis deals with the possibilities of simulation and optimalization of ethernet networks in Matlab interface. Ethernet technology, quality of service and architecture of differentiated services are described in this thesis. Based on these facts, there was created a toolbox. This toolbox allows to create a dynamic network, which can be configured via using GUI. In the end of the thesis, there are shown results of the simulation of networks, which is running in created program.

Das Chemnitzer StudentenNetz (CSN) setzt seit mehreren Jahren ein System zur automatischen Regelung der Bandbreite ("DynShaper") basierend auf den Grundlagen der Diplomarbeit von Jan Horbach "Dynamische Bandbreitenbeschränkung mit QoS" ein. Aufgrund der weiterhin bestehenden Notwendigkeit zum Einsatz dieses Systems, ist es nötig die DynShaper-Software zu überarbeiten, um ihre Implementierung an die Standards des CSN anzupassen und die unvollständige Dokumentation zu ergänzen. Hauptaugenmerk liegt dabei auf der Integration des Systems in die bestehende Softwarearchitektur des CSN und der Schaffung einer modularen Implementierung zur Evaluierung anderer Berechnungsverfahren.

Este trabajo de investigación desarrolla una propuesta de mejora de los procesos de Gestión de Procesos y Desarrollo de Software de una pequeña empresa (PYME) dedicada a la consultoría y proyectos de desarrollo en el sector de la industria del software para las empresas del mercado peruano. Strategic Decision Consulting SAC ha realizado proyectos de inteligencia de negocios en los rubros de outsourcing y desarrollo de software de acuerdo con los requerimientos del cliente que le han ayudado rápidamente a tener una cartera de clientes y posicionamiento en el mercado durante el periodo 2016-2017. Después de este periodo de auge y ante la ausencia de formalización de sus procesos de gestión y de desarrollo la empresa Strategic ha ido perdiendo clientes y contratos por diversos problemas como una gestión ineficiente en el ciclo de desarrollo de software, sobrecostos en los proyectos, insatisfacción de los clientes, incidencias en la calidad del software, retrasos en los entregables entre otros problemas. Todo ello ha llevado a una fuerte caída en la facturación en el periodo 2018-2019. Ante este panorama y en medio de una coyuntura terrible por la pandemia debida al Covid-19 se propone el desarrollo de una propuesta de mejora de acuerdo con el perfil básico de la norma ISO 29110 que propone buenas prácticas para el diseño de los procesos de gestión de proyectos y de desarrollo de software. En el presente trabajo de investigación se realiza una revisión de la industria del software, del tipo de empresa, de la situación actual y marco regulatorio de la industria del software en el Perú. Se revisan los modelos de procesos de software presentes en el mercado como Moprosoft, CMMI, ISO 12207, Prince2 entre otros justificando la elección de la norma ISO 29110 para la empresa. Finalmente se define el alcance y marco de evaluación de la norma ISO29110 sustentando el uso del perfil básico. Se realiza un análisis de brechas de los resultados de evaluación de los procesos y una evaluación económica de implementación de la norma ISO29110 cuya relación costo-beneficio es adecuada a las posibilidades de la empresa. / This research work develops a proposal to improve the Software Development and Process Management processes of a small company dedicated to consulting and development projects in the software industry sector for companies in the Peruvian market. Strategic Decision Consulting SAC has carried out business intelligence projects in the areas of outsourcing and software development in accordance with the client's requirements that have quickly helped it to have a portfolio of clients and market positioning during the period 2016-2017. After this boom period and in the absence of formalization of its management and development processes, Strategic company has been losing clients and contracts due to various problems such as inefficient management in the software development cycle, cost overruns in projects, dissatisfaction from customers, incidents in the quality of the software, delays in deliverables among other problems. All this has led to a sharp drop in billing in the 2018-2019 period. Given this scenario and during a terrible situation due to the pandemic due to Covid-19, it is proposed to develop an improvement proposal in accordance with the basic profile of ISO 29110 that proposes good practices for the design of project management and software development processes. In this research work, a review of the software industry, the type of company, the current situation, and the regulatory framework of the software development sector in Peru is carried out. The software process models present in the market such as Moprosoft, CMMI, ISO 12207, Prince2 among others are reviewed, justifying the choice of the ISO 29110 standard for the company. Finally, the scope and evaluation framework of the ISO29110 standard is defined, supporting the use of the basic profile. A gap analysis of the evaluation results of the processes and an economic evaluation of the implementation of the ISO29110 standard are carried out, the cost-benefit ratio of which is appropriate to the possibilities of the company. / Trabajo de investigación

En general el tema de investigación sobre la calidad del servicio en relación a la decisión de compra de seguros Oncológicos privados, se desarrollarán los siguientes conceptos: El primero alude al Marketing de servicios, el Segundo a Las 8 p's en donde en específico se hablará de calidad del servicio. El Tercero corresponde a Marketing en salud y el cuarto a marketing Oncológico. Dentro de los autores más importantes se encuentran Hoffman y Bateson; Kotler y Keller; Del Rosario; Caballero-Uribe; Corea, Gómez; Castillejo, Beceiro y Pinillos, todos los textos académicos que nos hacen referencia al tema calidad como factor del marketing de servicios en relación a la decisión de compra de seguros oncológicos nos dan a entender que se mezclan bastantes tipos de marketing, que resulta ser muy delicado comunicarlo y sobre todo hacer que adquieran el seguro ya que normalmente hay muchas personas de la tercera edad que sí lo adquieren a comparación de los jóvenes adultos que no conocen en que consta tener un seguro oncológico y por ello no les llama la atención adquirirlo. / In general, the topic of research on the quality of the service in relation to the decision to purchase private Oncological insurance, the following concepts will be developed: The first refers to the Marketing of services, the second to 8 p's where in particular we will talk about quality of service. The third corresponds to Health Marketing and the fourth to Oncological Marketing. Among the most important authors are Hoffman and Bateson; Kotler and Keller; Rosary; Caballero-Uribe; Korea, Gomez; Castillejo, Beceiro and Pinillos, all academic texts that refer to the issue of quality as a factor in the marketing of services in relation to the decision to purchase cancer insurance suggest that many types of marketing are mixed, which turns out to be very delicate communicate it and, above all, do that they acquire the insurance since there are usually many elderly people who do acquire it in comparison to young adults who do not know what it means to have cancer insurance and therefore it is not surprising to acquire it. / Trabajo de investigación

Modern technologies are growing and Voice over Internet Protocol (VoIP) technology is able to function in heterogeneous networks. VoIP gained wide popularity because it offers cheap calling rates compared to traditional telephone system and the number of VoIP subscribers has increased significantly in recent years. End users need reliable and acceptable call quality in real time communication with best Quality of Service (QoS). Server complexity is increasing to handle all client requests simultaneously and needs huge processing power. VoIP Servers will increase processing power but the engineering tradeoff needs to be considered e.g. increasing hardware will increase hardware complexity, energy consumption, network management, space requirement and overall system complexity. Modern System-on-Chip (SoC) uses multiple core technology to resolve the complexity of hardware computation. With enterprises needing to reduce overall costs while simultaneously improving call setup time, the amalgamation of VoIP with SoC can play a major role in the business market. The proposed VoIP Server model with multiple processing capabilities embedded in it is tailored for multicore hardware to achieve the required result. The model uses SystemC-2.2.0 and TLM-2.0 as a platform and consists of three main modules. TLM is built on top of SystemC in an overlay architectural fashion. SystemC provides a bridge between software and hardware co-design and increases HW & SW productivity, driven by fast concurrent programming in real time. The proposed multicore VoIP Server model implements a round robin algorithm to distribute transactions between cores and clients via Load Balancer. Primary focus of the multicore model is the processing of call setup time delays on a VoIP Server. Experiments were performed using OpenSIP Server to measure Session Initiation Protocol (SIP) messages and call setup time processing delays. Simulations were performed at the KTH Ferlin system and based on the theoretical measurements from the OpenSIP Server experiments. Results of the proposed multicore VoIP Server model shows improvement in the processing of call setup time delays.

<p>Pametna elektroenergetska mreža predstavlja mrežu nove generacije koja treba da bude efikasna, proširiva, pouzdana i jednostavna za upravljanje. Pametnu mrežu karakteriše veliki broj uređaja i dvosmerna komunikacija sa njima. Ovi uređaji će generisati ogromne količine podataka koje je potrebno pročitati i transportovati do kontrolnog centra, za šta je neophodna odgovarajuća komunikaciona infrastruktura koja obezbeđuje adekvatan kvalitet usluge. U ovoj disertaciji je prikazano rešenje za obezbeđivanje kvaliteta usluge sabraćaja sa dinamičkim promenama prioriteta i propusnog opsega bazirano na programabilnim računarskim mrežama. Takođe je razvijena platforma za evaluaciju komunikacione infrastrukture pametnih mreža kako bi se omogućilo jednostavnije emuliranje različitih mrežnih topologija za potrebe razvoja novih algoritama upravljanja. Performanse rešenja su potvrđene putem šest testnih scenarija i pokazano je da predstavljeno rešenje daje bolje rezultate za sve scenarije sa aspekta obezbeđivanja propusnog opsega i mrežnog kašnjenja.</p> / <p>Smart grid represents the next generation power network which should be efficient, extensible, reliable and easy to manage. The smart grid will have a great number of devices with two-way communication. These devices will generate large amount of data that needs to be read and transported to utility control center, which further requires adequate communication infrastructure with appropriate quality of service. This dissertation presents a solution for providing quality of service for traffic with dynamic priority and bandwidth requirements, based on software defined networks. The platform for smart grid communication infrastructure evaluation is developed to enable easy emulation of different network topologies for the purpose of developing new control algorithms. Solution performance is verified using six test scenarios and it is shown that the proposed solution gives better results for all scenarios from the aspect of bandwidth provision and network latency.</p>

The Data Distribution Service (DDS) is a flexible, decentralized, peer-to-peer communication middle-ware. This thesis presents a performance analysis of the DDS usage in the Toyota Smartness platform that is used in Toyota’s Autonomous Guided Vehicles (AGVs). The purpose is to find if DDS is suitable for internal communication between modules that reside within the Smartness platform and for external communication between AGVs that are connected in the same network. An introduction to the main concepts of DDS and the Toyota Smartness platform architecture is given together with a presentation of some earlier research that has been done in DDS. A number of different approaches of how DDS can be integrated to the Smartness platform are explored and a set of different configurations that DDS provides are evaluated. The tests that were performed in order to evaluate the usage of DDS are described in detail and the results that were collected are presented, compared and discussed. The advantages and disadvantages of using DDS are listed, and some ideas for future work are proposed.