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Title: Módulo de sobrevivência para nós de redes MESH sem fio com múltiplos saltos
Keywords: Engenharia de telecomunicações;  Redes sem fio;  Redes mesh de múltiplos saltos;  Baterias;  Energia solar;  Energia Eólica;  Telecomunication engineering;  Wireless networks;  Mesh networks of multiple hops;  Batteries;  Solar energy;  Wind energy
Issue Date: 9-May-2008
Abstract: The deployment of wireless networks is growing at a very fast rate, however, in contrast with wired networks, energy consumption is a critical resource when wireless devices are battery powered. This happens both in mobile nodes and when they are installed in areas where there is no electrical power available, as for example: in communication stations and data acquisition at rural areas. Recent research show that only small improvements in the energy capacity of batteries are expected in a near future. Therefore, to install wireless networks using commercially available devices, we need to control and to reduce the total energy consumption so as to maximize the battery utilization without jeopardizing the communication efficiency. There are three solutions for the problem. The first is to utilize solar energy and/or the energy of the wind to recharge the batteries. The second is to manage the network nodes when they are in the idle state to go in a sleep/wake up cycle minimizing the impact in the data transmission. The third is to manage the nodes to power-off for a period of time aiming at greater reduction of battery consumption, without meaningful impact in communication. The main objective of this work is to present a feasibility technical study and a prototype development so that multiple hops wireless mesh networks, using Wi-Fi (Wireless Fidelity) and IEEE 802.11a/b/g standard can be used in regions where there isn t electrical power available.
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