In this paper, we propose IoTChain, a combination of the OSCAR architecture [1] and ACE authorization framework [2] to provide an E2E solution for secure authorized access IoT resources. IoTChain consists two components, blockchain based on object security model, extended with group key scheme. The provides flexible trustless way handle while uses public ledger set up multicast groups clients. To evaluate feasibility our architecture, have implemented top private Ethereum network. We report...

Open authorization (OAuth) is an open protocol, which allows secure in a simple and standardized way from third-party applications accessing online services, based on the representational state transfer (REST) web architecture. OAuth has been designed to provide layer, typically top of transport layer such as HTTPS. The Internet Things (IoTs) refers interconnection billions resource-constrained devices, denoted smart objects, Internet-like structure. Smart objects have limited...

The Internet of Things (IoT) aims at connecting billions devices in an Internet-like structure. This gigantic information exchange enables new opportunities and forms interactions among things people. A crucial enabler robust applications easy smart objects' deployment is the availability mechanisms that minimize (ideally, cancel) need for external human intervention configuration maintenance deployed objects. These must also be scalable, since number objects expected to constantly grow next...

The ongoing diffusion of Internet Things (IoT) technologies is opening new possibilities, and one the most remarkable applications associated with smart city paradigm, which continuously evolving. In general, it can be defined as integration IoT Information Communication Technologies (ICT) into management, aim addressing exponential growth urbanization population, thus significantly increasing people’s quality life. paradigm also strictly connected to sustainability aspects, taking account,...

Presently, the adoption of Internet Things (IoT)-related technologies in Smart Farming domain is rapidly emerging. The ultimate goal to collect, monitor, and effectively employ relevant data for agricultural processes, with purpose achieving an optimized more environmentally sustainable agriculture. In this paper, a low-cost, modular, Long-Range Wide-Area Network (LoRaWAN)-based IoT platform, denoted as "LoRaWAN-based Modular Architecture" (LoRaFarM), aimed at improving management generic...

Power conservation is one of the most important issues in wireless ad hoc and sensor networks, where nodes are likely to rely on limited battery power. Transmitting at unnecessarily high power not only reduces lifetime network, but also introduces excessive interference. It network designer's best interest have each node transmit lowest possible while preserving connectivity. In this paper, we investigate optimal common power, defined as minimum used by all necessary guarantee This desirable...

The Internet of Things (IoT), being a “network networks”, promises to allow billions humans and machines interact with each other. Owing this rapid growth, the deployment IoT-oriented networks based on mesh topologies is very attractive, thanks their scalability reliability (in presence failures). In paper, we provide comprehensive survey following relevant wireless technologies: IEEE 802.11, Bluetooth, 802.15.4-oriented, Sub-GHz-based LoRa. Our goal highlight how various communication...

The infrastructure of vehicular networks plays a major role in realizing the full potential communications. More and more vehicles are connected to Internet each other, driving new technological transformations multidisciplinary way. Researchers automotive/telecom industries academia joining their effort provide visions solutions increasingly complex transportation systems, also envisioning myriad applications improve experience mobility. These trends pose significant challenges...

The Internet of Things (IoT) refers to the Internet-like structure billions interconnected constrained devices, denoted as “smart objects”. Smart objects have limited capabilities, in terms computational power and memory, might be battery-powered thus raising need adopt particularly energy efficient technologies. Among most notable challenges that building smart brings about, there are standardization interoperability. use IP has been foreseen standard for interoperability objects. As...

In this paper, we investigate the ultimate performance limits, in terms of achievable information rate (IR), communication systems impaired by impulse noise. We compare single carrier (SC) and multi-carrier (MC) transmission employing quadrature amplitude modulation (QAM) formats. More precisely, consider SC schemes with coded modulations MC based on orthogonal frequency division (OFDM). For schemes, introduce a theoretically equivalent channel model which makes computation IR feasible. This...

Research efforts in the field of Internet Things (IoT) are providing solutions building new types "network networks," going beyond technological barriers due to intrinsic limitations constrained devices typically used this context. Thanks improvement communication/networking protocols and hardware cost reduction, it is now possible define IoT architectures, combining "micro" paradigm, based on short-range radio technologies (e.g., IEEE 802.15.4 802.11), with rising "macro" sub-GHz...

Recently, we have proposed a body-sensor-network-based approach, composed of few body-worn wireless inertial nodes, for automatic assignment Unified Parkinson's Disease Rating Scale (UPDRS) scores in the following tasks: Leg agility (LA), Sit-to-Stand (S2S), and Gait (G). Unlike our previous works majority published studies, where UPDRS tasks were sole focus, this paper, carry out comparative investigation LA, S2S, G tasks. In particular, after providing an accurate description features...

The Internet of Things (IoT) will interconnect billions devices, denoted as "smart objects," deployed pervasively, which be extremely heterogeneous, in terms hardware (i.e., computational power and available memory), software operating systems, applications), communication interfaces. Traditional actors, such personal computers, mobile cloud servers, also communicate with smart objects, thus creating even more complexity. IoT has so far grown several vertical silos, the purpose demonstrating...

In this paper, we consider the problem of locating a target node (TN) moving along corridor in large industrial environment by means ultrawide band signaling from fixed anchor nodes (ANs) uniformly positioned at same height on both sides corridor. For representative geometry indoor (industrial) scenario, formulate an analytical approach to optimized placement (in terms internode distance) ANs using criterion minimizing average mean square error (MSE) time-difference-of-arrival-based...

Research advances in the last decades have allowed introduction of Internet Things (IoT) concepts several industrial application scenarios, leading to so-called Industry 4.0 or Industrial IoT (IIoT). The has ambition revolutionize industry management and business processes, enhancing productivity manufacturing technologies through field data collection analysis, thus creating real-time digital twins scenarios. Moreover, it is vital for companies be as "smart" possible adapt varying nature...

Previously, noncoherent sequence detection schemes for coded linear and continuous phase modulations have been proposed, which deliver hard decisions by means of a Viterbi algorithm. The current trend in digital transmission systems toward iterative decoding algorithms motivates an extension these schemes. In this paper, we propose two soft-output algorithms. first solution has structure similar to that the well-known algorithm Bahl et al. (1974), whereas second is based on reduced-state...

We propose a technique to reduce the number of trellis states in BCJR-type algorithms, i.e., algorithms. with structure similar that well-known algorithm by Bahl, Cocke, Jelinek, and Raviv (1974). This work is inspired reduced-state sequence detection (RSSD). The key idea construction, during one recursions trellis, "survivor map" be used other recursion. In more general setting, two distinct survivor maps could determined jointly approximate posteriori probabilities. Three examples...

We evaluate the performance of realistic wireless sensor networks in indoor scenarios. Most considered are formed by nodes using Zigbee communication protocol. For comparison, we also analyze based on proprietary standard Z-Wave. Two main groups network scenarios proposed: (i) with direct transmissions between remote and coordinator, (ii) routers, which relay packets coordinator. The interest evaluated considering different metrics. In particular, show how received signal strength indication...