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Integration of unidirectional technologies into wireless back-haul architecture
This thesis was submitted for the degree of Docter of Philosophy and awarded by Brunel University.Back-haul infrastructures of today's wireless operators must support the triple-play services demanded by the market or regulatory bodies. To cope with increasing capacity demand, the EU FP7 project CARMEN has developed a cost-effective heterogeneous
multi-radio wireless back-haul architecture, which may also leverage the native multicast
capabilities of broadcast technologies such as DVB-T to off-load high-bandwidth broadcast
content delivery. However, the integration of such unidirectional technologies into a packet-switched architecture requires careful considerations. The contribution of this thesis is the investigation, design and evaluation of protocols and mechanisms facilitating the integration of such unidirectional technologies into the wireless
back-haul architecture so that they can be configured and utilized by the spectrum and
capacity optimization modules. This integration mainly concerns the control plane and, in particular, the aspects related to resource and capability descriptions, neighborhood, link and Multi Protocol Label Switching (MPLS) Label-Switched Path (LSP) monitoring, unicast and multicast LSP signalling as well as topology forming and maintenance. During the course of this study we have analyzed the problem space, proposed solutions to the resulting research questions and evaluated our approach. Our results show that the now Unidirectional Technology (UDT)-aware architecture can readily consider
Unidirectional Technologies (UDTs) to distribute, for example, broadcast content
Ferramenta de gestão de redes MESH
Mestrado em Engenharia Electrotécnica e de Computadores - Área de Especialização de TelecomunicaçõesO acesso às novas tecnologias usadas em edifícios de habitação (acesso à internet, comunicações, videovigilância, videoporteiro, gestão de condomínios, domótica, etc.) implica o uso da tecnologia IEEE 802.11, uma vez que os dispositivos usados atualmente, desde computadores portáteis a smartphones, estão equipados com interfaces 802.11. Devido à limitação de alcance de rádio da tecnologia 802.11 tem surgido novas soluções para aumentar a sua cobertura. As redes sem fios mesh – Wireless Mesh Networks (WMNs) são consideradas soluções flexíveis e económicas adequadas para serem usadas no contexto acima descrito.
O objectivo deste trabalho é criar uma ferramenta que possa ser integrada na solução GateBox, um dos produtos desenvolvidos e comercializados pela empresa NextToYou. Esta ferramenta de gestão deve permitir ao administrador da rede o controlo e a consulta do estado de uma rede mesh em tempo real.
O trabalho desenvolvido teve como base uma pesquisa quanto aos protocolos de routing e equipamentos utilizados, em soluções idênticas já existentes. Com base nesse estudo foi criada uma ferramenta de gestão para redes mesh que utilizem o protocolo de routing Better Approach To Mobile Adhoc Networking advanced (BATMAN-ADV).
A ferramenta desenvolvida permite a visualização gráfica e textual da localização, caracterização e estado das redes mesh. Permite também a configuração em tempo real das redes e dos seus nós, assim como permite a monitorização automática das redes e emite notificações de alerta, em caso de deficiências de desempenho.
Foram realizados testes à ferramenta de gestão desenvolvida que mostraram que a mesma responde com rapidez às solicitações efetuadas, assim como se revelou eficaz quanto à monitorização automática das redes. Devido à ferramenta de gestão desenvolvida, o produto GateBox, passa agora a estar habilitado a implementar redes mesh em edifícios de habitação, podendo controlar e monitorizar o funcionamento dessas redes em tempo real.Access to new technologies used in residential buildings (internet access, communications, video surveillance, video intercom, property management, home automation, etc.) involves the use of IEEE 802.11 technology, once the devices used today, from laptops to smartphones, are equipped with 802.11 interfaces. Due to limited radio range of 802.11 technology has emerged new solutions to enhance its coverage. The Wireless Mesh Networks (WMNs) are considered appropriate economic and flexible solutions to be used in the context described above.
The aim of this work is to create a tool that can be integrated into the GateBox solution, a product developed and marketed by the company NextToYou. This management tool should allow the network administrator to control and query the status of a mesh network in real time.
The work was based on a survey regarding routing protocols and equipment used in existing identical solutions. Based on this study was created a management tool for mesh networks using the routing protocol BATMAN-ADV.
The developed tool provides a graphic and textual display of location, characterization and status of mesh networks. It also allows real-time configuration of networks and their nodes, as well as allows the automatic monitoring of networks and sends alert notifications in case of performance deficiencies.
Tests were conducted at management tool developed which showed that it responds quickly to requests made, and proved effective in the automatic monitoring of networks. Due to management tool developed, GateBox solution will now be able to deploy mesh networks in residential buildings, being able to control and monitor the operation of these networks in real time