Accurate localization for wireless sensor end devices is critical, particularly Internet of Things (IoT) location-based applications such as remote healthcare, where there a need quick response to emergency or maintenance services. Global Positioning Systems (GPS) are widely known outdoor services; however, high-power consumption and hardware cost become significant hindrance dense networks in ...

Wireless sensor networks are often located in areas where access to them is difficult or dangerous. Today, in wireless sensor networks, cluster-based routing protocols by dividing sensor nodes into distinct clusters and selecting local head-clusters to combine and send information of each cluster to the base station and balanced energy consumption by network nodes, get the best performance ...

the intelligent transportation system (its) provides wireless and mobile communication between vehicles and infrastructure to improve the safety of transportation and make the journey more enjoyable. this system consists of many fixed and mobile nodes (vehicles, trains, vessels, air planes), wireless and wired telecommunication technologies to exchange information between mobile nodes or betwee...

Wireless sensor networks(WSN) have unique properties that distinguished them from other wireless networks and have special challenges. Not-chargeable, not-changeable and limited power supplies of sensor nodes is the most important challenge of this networks, and if the power supply of node expired, a part of data maybe lost. Because of the importance of covers in wireless sensors, in this work ...

By extending wireless networks and because of their different nature, some attacks appear in these networks which did not exist in wired networks. Security is a serious challenge for actual implementation in wireless networks. Due to lack of the fixed infrastructure and also because of security holes in routing protocols in mobile ad hoc networks, these networks are not protected against attack...

wireless sensor networks are composed of hundreds or thousands of small nodes called sensor that work together and are associated with a specific task or tasks to do. each of these nodes includes sensor, processor, communication components, a small memory and a source of energy. it is expected that wireless sensor networks will be used widely in many applications in near future. scalability and...

LoRaWAN is currently the best among LPWANs protocols when it comes to IoT or machine-to-machine (M2M) communication such as in deployment of wireless sensor networks. an RF technology operating ISM bands. Its strength from capability Long-range between remote sensors and gateways, deep indoor penetration, public private network deployment. All these traits are possible because LoRa modulation t...

Cyber security is nowadays synonymous with the reliability of elements connected to internet. Better control factories, systems or even individual sensors possible through use Internet Things technology. The aforementioned structures and data they transmit has been a major concern in development IoT solutions for wireless transmission. If we add this prospect low-cost end devices, can seriously...

Wireless Body Sensor Networks (WBSNs) involve a convergence of biosensors, wireless communication and networks technologies. WBSN enables real-time healthcare services to users. Wireless sensors can be used to monitor patients’ physical conditions and transfer real time vital signs to the emergency center or individual doctors. Wireless networks are subject to more packet loss and congestion. T...