نتایج جستجو برای: wireless networks lorawan

تعداد نتایج: 479341  

Journal: :journal of advances in computer research 2012
sajjad jahanbakhsh gudakahriz shahram jamali mina vajed khiavi

mobile ad hoc networks (manets) are composed of mobile stations communicating through wireless links, without any fixed backbone support. in these networks, limited power energy supply, and frequent topology changes caused by node mobility, makes their routing a challenging problem. tora is one of the routing protocols that successfully copes with the nodes’ mobility side effects, but it doesn’...

Journal: :Brazilian Journal of Development 2023

Long Range (LoRa) is a spread spectrum modulation technology designed for Low-Power Wide-Area Networking (LPWAN) with growing application in Internet of Things (IoT), which plays an important role the global digitalization process. The expansion LORAWAN networks demands careful circuit, system and network design to improve energy efficiency quality service. To support this task, advanced CAD to...

Journal: :the modares journal of electrical engineering 2015
mortza rezayi hamid farrokhi

abstract this paper presents a multiobjective power control algorithm that updates the transmitted power based on local information. the proposed algorithm is expanded by using multiobjective optimization schemes. the objectives to be optimized in this paper are determined so as to reduce the sinr fluctuations as well as maintaining the sinr to an acceptable level with minimizing an average tra...

Journal: :IEEE Communications Magazine 2023

Wireless underground sensor networks (WUSNs) promise to deliver substantial social and economic benefits across different verticals. However, many of the relevant application scenarios are located in remote areas with no supporting infrastructure available. To address this challenge, we conceptualize study direct-to-satellite (U-DtS) connectivity approach, implying reception signals sent by mas...

Journal: :IEEE Access 2021

The long range wide area network (LoRaWAN) is one of the enabling technologies for low power (LPWA) networks. In LoRaWAN, a node transmits its packet to gateway (GW) in an autonomous and decentralized manner. quantity data that can be transmitted by each limited duty cycle (DC). Furthermore, it not easy nodes perform sophisticated techniques increasing due their functionality, especially when a...

Journal: :Media Elektro: Journal of Electrical Power, Informatics, Telecommunication, Electronics, Computer and Control 2023


 This research aims to develop a system that integrates the IEEE 802.11 network and LoRa WAN in developing wireless sensor (WSN) an area without public communication infrastructure. The nodes were developed using ESP 8266 Node MCU with embedded module sink was Raspberry Pi minicomputer module. frames sent by classified into regular data critical data. sensing is forwarded nearest location...

Journal: :Energies 2023

The use of Wireless Sensor Networks (WSN) in smart agriculture has emerged recent years. LoRaWAN (Long Range Wide Area Networks) is widely recognized as one the most suitable technologies for this application, due to its capacity transmit data over long distances while consuming little energy. Determining number and location gateways (GWs) a production setting challenging tasks planning buildin...

While routing in multi-hop packet radio networks (static Ad-hoc wireless networks), it is crucial to minimize power consumption since nodes are powered by batteries of limited capacity and it is expensive to recharge the device. This paper studies the problem of broadcast routing in radio networks. Given a network with an identified source node, any broadcast routing is considered as a directed...

Abbas Arghavani, Abdorasoul Ghasemi

Cooperation is the foundation of many protocols in wireless networks. Without cooperation, the performance of a network significantly decreases. Hence, all nodes in traditional networks are required to cooperate with each other. In this paper, instead of traditional networks, a network of rational and autonomous nodes is considered, which means that each node itself can decide whe...

Journal: :Indonesian Journal of Electrical Engineering and Computer Science 2023

The adoption of smart agricultural technology in rural areas is still limited terms network infrastructure supported. As a result, farmers continue to practice traditional farming that mainly focuses on human labor and requires experience planning the production products unstable weather conditions, which makes highly risky. Currently, long range (LoRa) agriculture support tool will enable Inte...

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