Spelling suggestions: "subject:"[een] MESH NETWORKS"" "subject:"[enn] MESH NETWORKS""
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[en] OPPORTUNISTIC ROUTING TOWARDS MOBILE SINK NODES IN BLUETOOTH MESH NETWORKS / [pt] ROTEAMENTO OPORTUNÍSTICO EM DIREÇÃO A NÓS SINK MÓVEIS EM REDES BLUETOOTH MESHMARCELO PAULON JUCA VASCONCELOS 26 April 2021 (has links)
[pt] Este trabalho avalia a coleta esporádica de dados em uma rede sem fio
Bluetooth Mesh, usando o simulador OMNET (mais mais) INET. O coletor de dados é
um nó sink em movimento, que poderia ser um smartphone ou outro dispositivo
portátil, carregado por um pedestre, ciclista, animal, ou um drone. O nó sink
poderia se conectar a uma rede mesh em áreas de difícil acesso onde não há
acesso a internet, e coletar dados de sensores. Após implementar extensões ao
Bluetooth Mesh, funcionalidades de nós Low Power e Friends no OMNET (mais mais),
conseguimos propor e avaliar algoritmos para roteamento adaptativo, e com
foco em mobilidade, de dados de sensores em direção ao nó sink. Uma variação
de um dos algoritmos de roteamento propostos alcançou um aumento de
173,54 por cento na quantidade de dados únicos entregues ao nó sink em comparação
ao algoritmo de roteamento padrão do Bluetooth Mesh. Neste caso, houve um
aumento de apenas 4,63 por cento no consumo de energia para o mesmo cenário. Além
disso, a taxa de entrega aumentou em 111.82 por cento. / [en] This work evaluates sporadic data collection on a Bluetooth Mesh
network, using the OMNET (plus plus) INET simulator. The data collector is a
roaming sink node, which could be a smartphone or other portable device,
carried by a pedestrian, a biker, an animal, or a drone. The sink node could
connect to a mesh network in hard-to-reach areas that do not have internet
access and collect sensor data. After implementing Bluetooth Mesh relay
extensions, Low Power, and Friend features in OMNET (plus plus), we were able
to propose and evaluate algorithms for mobility-aware, adaptive, routing
of sensor data towards the sink node. One variation of a proposed routing
algorithm achieved a 173.54 percent increase in unique data delivered to the sink
node compared to Bluetooth Mesh s default routing algorithm. In that
case, there was only a 4.63 percent increase in energy consumption for the same
scenario. Also, the delivery rate increased by 111.82 percent.
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Layer 2 Path Selection Protocol for Wireless Mesh Networks with Smart AntennasPorsch, Marco 16 September 2011 (has links) (PDF)
In this thesis the possibilities of smart antenna systems in wireless mesh networks are examined. With respect to the individual smart antenna tradeoffs, a routing protocol (Modified HWMP, MHWMP) for IEEE 802.11s mesh networks is presented, that exploits the full range of benefits provided by smart antennas: MHWMP actively switches between the PHY-layer transmission/reception modes (multiplexing, beamforming and diversity) according to the wireless channel conditions. Spatial multiplexing and beamforming are used for unicast data transmissions, while antenna diversity is employed for efficient broadcasts. To adapt to the directional channel environment and to take full benefit of the PHY capabilities, a respective MAC scheme is employed. The presented protocol is tested in extensive simulation and the results are examined.
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Layer 2 Path Selection Protocol for Wireless Mesh Networks with Smart AntennasPorsch, Marco 12 April 2011 (has links)
In this thesis the possibilities of smart antenna systems in wireless mesh networks are examined. With respect to the individual smart antenna tradeoffs, a routing protocol (Modified HWMP, MHWMP) for IEEE 802.11s mesh networks is presented, that exploits the full range of benefits provided by smart antennas: MHWMP actively switches between the PHY-layer transmission/reception modes (multiplexing, beamforming and diversity) according to the wireless channel conditions. Spatial multiplexing and beamforming are used for unicast data transmissions, while antenna diversity is employed for efficient broadcasts. To adapt to the directional channel environment and to take full benefit of the PHY capabilities, a respective MAC scheme is employed. The presented protocol is tested in extensive simulation and the results are examined.:1 Introduction
2 Wireless Mesh Networks
3 IEEE 802.11s
4 Smart Antenna Concepts
5 State of the Art: Wireless Mesh Networks with Smart Antennas
6 New Concepts
7 System Model
8 Results and Discussion
9 Conclusion and Future Work
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