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Recolector de Ciencia Abierta, RECOLECTA
Bachelor thesis . 2012
License: CC BY NC ND
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
Recolector de Ciencia Abierta, RECOLECTA
Bachelor thesis . 2013
License: CC BY NC ND
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Estudio de soluciones de movilidad a nivel de enlace y nivel de red

Authors: Marciel Noguera, Miriam;

Estudio de soluciones de movilidad a nivel de enlace y nivel de red

Abstract

En los últimos años el mercado de los teléfonos inteligentes o smartphones ha aumentado su número de usuarios, permitiéndoles que tengan acceso a internet en cualquier lugar y en cualquier momento. El problema surge cuando se quieren mantener las conexiones activas mientras el usuario se desplaza y cambia de punto de conexión. En un principio, ninguno de los protocolos más importantes de la pila TCP/IP (IPv4, IPv6, TCP, UDP) fueron diseñados para permitir la movilidad. Por ello, aparecen diferentes soluciones en todas las capas de la pila TCP/IP que permiten mantener las conexiones activas mientras el usuario cambia de punto de conexión. En este Trabajo Fin de Grado se presenta un estudio de las distintas soluciones de movilidad a nivel de enlace y nivel de red sobre una red real. En este estudio se mide el tiempo de traspaso o handover total de cada una de las soluciones, desde que el nodo móvil comienza el traspaso hasta vuelve a estar operativo recibiendo y enviando tráfico. Además se evalúan cualitativamente el funcionamiento de las soluciones. En la primera fase, se ha desplegado la red inalámbrica en el Departamento de Ingeniería Telemática de la Universidad Carlos III de Madrid con nodos inalámbricos Saxnet Meshnode III, en la que posteriormente se ha realizado el estudio de las soluciones de movilidad. En la segunda fase, se han estudiado soluciones de movilidad a nivel de enlace y nivel de red. A nivel de enlace, la movilidad depende de la tecnología de acceso que se utilice siendo las más utilizados Wi-Fi y la red celular (GSM, GPRS, UMTS). En este estudio se mide el rendimiento de la movilidad en una red Wi-Fi. A nivel de red existen varios protocolos que permiten la movilidad manteniendo la dirección IP. Se dividen en dos tipos según el tipo de movilidad que ofrecen: movilidad basada en red y movilidad basada en cliente. La movilidad basada en red es transparente al usuario y es la red quien gestiona la movilidad y la detección de movimiento de los usuarios. Proxy Mobile IPv6 (PMIPv6) es un ejemplo de este tipo de movilidad. La movilidad basada en cliente es aquella en la que el usuario se encarga de la gestión de movilidad, participando en la señalización y en la detección del movimiento. Como ejemplo de este tipo de movilidad está Mobile IPv6 (MIPv6). Para el estudio se han utilizando implementaciones existentes de MIPv6 y PMIPv6, siendo necesario su instalación y configuración. En el caso de movilidad a nivel de enlace se ha diseñado una solución. _________________________________________________________________________________________________________________ In recent years the market of smartphones has increased the number of users, allowing them to connect to the Internet everywhere at any time. The problem appears when they wanted to keep outgoing connections alive when the user is moving and changes his point of connection. Initially, none of the most important protocols of the TCP/IP stack (IPv6, IPv6, TCP, UDP) was designed to allow mobility. Therefore different solutions appear in all the layers of the TCP/IP stack that allow keeping outgoing connections alive while the user is changing the point of connection. In this Bachelor Thesis a study of different mobility solutions at link layer and network layer is presented. This study measures the handover time of each solution, since the mobile node starts the handover until it becomes operating receiving and sending traffic. First, a wireless network has been deployed in the Telematics Department of University Carlos III of Madrid using Saxnet Meshnode III wireless nodes. Second, different mobility solutions have been studied at link layer and network layer. At link layer, mobility depends on the access technology that has been used. Nowadays the most used technologies are Wi-Fi and cellular networks (GSM, GPRS, UMTS). In this study we measured the mobility performance of a Wi-Fi network. At the network layer, there are several protocols to allow mobility while keeping the IP address. They are divided in two kinds of mobility: network-based mobility and client-based mobility. Network-based mobility is transparent to the user and the network manages the mobility and movement detection of the users. Proxy Mobile (IPv6) is an example of this kind of mobility. In client-based mobility, the client is responsible for managing mobility, taking part in the signaling and in the movement detection. An example of this kind of mobility is Mobile IPv6 (MIPv6). In this study we used existing implementations of MIPv6 and PMIPv6, installing and configuring them. In link layer, we design a solution. Ingeniería Telemática

Country
Spain
Related Organizations
Keywords

Telefonía móvil, Informática, IPv6, Radiocomunicación, Protocolos de comunicación, Redes celulares, Teléfonos inteligentes

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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