Current Issue : April - June Volume : 2020 Issue Number : 2 Articles : 5 Articles
Low power wide area network (LoRaWAN) protocol has been widely used in various fields.\nWith its rapid development, security issues about the awareness and defense against malicious events\nin the Internet of Things must be taken seriously. Eavesdroppers can exploit the shortcomings\nof the specification and the limited consumption performance of devices to carry out security\nattacks such as replay attacks. In the process of the over-the-air-activation (OTAA) for LoRa\nnodes, attackers can modify the data because the data is transmitted in plain text. If the userâ??s\nroot key is leaked, the wireless sensor network will not be able to prevent malicious nodes from\njoining the network. To solve this security flaw in LoRaWAN, we propose a countermeasure called\nSecure-Packet-Transmission scheme (SPT) which works based on the LoRaWAN standard v1.1 to\nprevent replay attacks when an attacker has obtained the root key. The proposed scheme redefines\nthe format of join-request packet, add the new One Time Password (OTP) encrypted method and\nchanges the transmission strategy in OTAA between LoRa nodes and network server. The security\nevaluation by using the Burrows-Abadi-Needham logic (BAN Logic) and the Scyther shows that\nthe security goal can be achieved. This paper also conducts extensive experiments by simulations\nand a testbed to perform feasibility and performance analysis. All results demonstrate that SPT is\nlightweight, efficient and able to defend against malicious behavior....
Internet of Things (IoT) is an emerging technology that offers promising solutions to modernize the traditional systems. It accords\npromising result in crystallizing smart cities, smart homes, smart industries, and smart environment. This article presents the\nsmart waste management architecture for smart cities and efficient routing technique considering least delay for the architecture.\nIn wireless sensor networks, end-to-end delay is one of the important Quality of Services (QoS) parameter to overcome delay in\ndata communication. In this article, we consider end-to-end delay minimization in smart waste management application. The\nterm â??end-to-end delayâ? is defined as the total time taken by a single packet to reach the destination node. The proposed scheme\nconsiders the interference level, the length of the routing path, and the number of hops along the path. The simulation results show\nthat the proposed scheme outperforms current schemes....
With the globalization of NBA, all eyes on the NBA playoffs are around the\nworld. Ones celebrate the winning of their team which they like. Especially,\nNBA fans keep on predicting the playoffs game results. However, prediction\nof winning probability of teams in NBA playoffs is challenging. In order to\nmeet the challenges, we proposed a method using ELO algorithm for prediction\nand leveraging Graph Database, Neo4j, for implementation. Experiment\nresults show that, the design and implementation of the prediction system\ncould work to some degree....
Traditional factories are turning into smart factories with the advent of various ICTtechnologies, and various control decisions are\nderived by AI technologies. In this circumstance, runtime verification of a control command is important for zero-defect\nmanufacturing processes but challengeable because factories of the future are highly complex and heterogeneous systems. In this\npaper, we propose DigTwinOps, a Digital Twin framework for Runtime Verification of Cyber-Physical Production Systems\n(CPPSs). DigTwinOps features a Digital Twin Execution Engine (DTEE) that manages a Digital Twin Model to synchronize states\nof a real CPPS object in a production environment. With a monitoring and simulation combination process, a human worker can\nobserve the states of the CPPS object and verify the effectiveness of control commands before applying it to a real production\nenvironment. The proposed framework is applied to a CPPS prototype production system, and the results show that the\nframework can work effectively in the controllability verification of control commands....
Systems trying to solve mobility issues in cities, such as high levels of accidents and traffic congestion, have been developed\nworldwide. Intelligent Transportation Systems (ITS) services focused on urban public transport are an option contributing to\nsolve such issues. A few intermediate cities in the Latin American context have developed some of these ITS services, which are\nmainly based on a tracking system for public transport vehicles. Such tracking systems have great limitations in terms of coverage,\navailability, and operational cost. In addition, they are commonly isolated mobility solutions, which cannot be easily integrated\nwith other mobility services in the city because they are not based on an ITS architecture. In order to improve public transportation\nsystems in intermediate cities, we proposed the development of an IoT-based public vehicle tracking system, using LoRa\n(Long Range) and ITS services. In this research, we developed the proposed system as a proof of concept. We designed and\nexecuted some experiments, in order to adjust parameters of the LoRa technology and to test its operation. This article presents the\nmethods we followed for developing the proof-of-concept model, a description of the experiments, and their results. The results\nlead to conclude that the LoRa technology and an IoT-based system are adequate for implementation of a mobility service such as\nthe one we propose, once important technical restrictions related mainly to Line of Sight (LoS) are considered. Key aspects for\nimplementation were also identified for deploying the service (as a prototype) in the city of Popay´an....
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