Some of the most challenging issues in data outsourcing scenario are enforcement authorization policies and support policy updates. Ciphertext-policy attribute-based encryption is a promising cryptographic solution to these for enforcing access control defined by owner on outsourced data. However, problem applying an architecture introduces several challenges with regard attribute user revocation. In this paper, we propose mechanism using ciphertext-policy enforce efficient revocation...

In this paper, we present a reliable storage service, called SolarStore, that adaptively trades-off reliability versus energy consumption in solar-powered sensor networks. SolarStore adopts predominantly disconnected network model, where long-running data-collection experiments are conducted the absence of continuous connection to outside world. (i) replicates data until next upload opportunity, and (ii) adapts degree replication dynamically depending on solar availability. The goal is...

Wireless sensor networks (WSNs) are used to collect large amounts of data over a wide area. However, the nodes in WSNs have short lifespan because they generally battery-operated. Research is actively underway increase via techniques such as energy harvesting and wireless power transfer (WPT). This study proposes scheme for clustering adjusting WSN collection rate alleviate hotspot problem improve network connectivity. The proposed targeted at which harvest solar energy. In addition, an...

In this paper, we present AdaptSens: a reliable data collection and storage system for solar-powered sensor networks. Unlike battery-operated devices, systems have less predictable energy supply their ability to harvest depends on past spending, thereby creating incentives adaptive matching of demand. Our is novel in its layered architecture incremental layer activation mechanism. AdaptSens provides set functions, separate layers, such as sensory collection, replication (to prevent...

A node in a solar-powered wireless sensor network (WSN) collects energy when the sun shines and stores it battery or capacitor for use no solar power is available, particular at night. In our scheme, each tiny WSN periodically determines its budget, which takes into account residual energy, likely acquisition consumption. If expects to acquire more than can store, data has sensed aggregated with from other nodes, compressed, transmitted. Otherwise, continues sense data, but turns off...

Most existing simulators for WSNs (wireless sensor networks) model battery-powered sensors and provide MAC routing protocols designed WSNs. Recently, however, increasingly extensive studies of energy harvesting systems require the development appropriate simulators, but there are few related on such simulators. Unlike a new that is integrated with harvesting, rechargeable battery, consuming models. Additionally, must enable applications well-known have convenient user-friendly interface. In...

Research on data routing strategies for wireless sensor networks (WSNs) has largely focused energy efficiency. However rapid advances in WSNs require protocols which can accommodate new types of source and requiring short end-to-end delay. In this paper, we describe a duty-cycle-based low-latency geographic asynchronous energy-harvesting WSNs. It uses an algorithm (D-APOLLO) that periodically locally determines the topological knowledge range duty-cycle each node, based estimated budget...

Troubleshooting unresponsive sensor nodes is a significant challenge in remote network deployments. This paper introduces the tele-diagnostic powertracer, an in-situ troubleshooting tool that uses external power measurements to determine internal health condition of host and most likely cause its failure. We developed our own low-cost meter with low-bandwidth radio report findings, hence allowing (i.e., tele-) diagnosis. The was deployed tested solar-powered sensing for acoustic visual...

This paper proposes a reliable wildfire monitoring system based on wireless sensor network (WSN) sparsely deployed in adverse conditions. The physical environment under consideration is characterized by asymmetric, irregular, and unreliable links, inadequate Fresnel zone clearance, routing problems, to name few. We use communication schemes fault-tolerant topology, where sensory data are guaranteed reach the base station with organized storage real-time visualization. Our approach has been...

In the majority of Internet Things (IoT) applications, persistent and stable operation is a crucial requirement. While environmental energy-harvesting technologies can enhance IoT’s persistence, they do not guarantee stability. Therefore, we aim to address stability challenges in solar-powered IoT (SP-IoT) by employing wireless power transmission (WPT) through unmanned aerial vehicles (UAVs). This study focuses on determining optimal charging mobility drones for WPT nodes operating wide area...

The characteristics of mobile ad hoc networks (MANETs) require special care in the handling service advertisement and discovery (Ad/D). In this paper, we propose a noble Ad/D technique for MANETs. Our scheme avoids redundant flooding reduces system overhead by integrating with routing layer. It also tracks changing conditions, such as traffic popularity levels. Based on variable zone radius, have combined push-based pull-based strategy.

Rapid advances in wireless sensor networks require routing protocols which can accommodate new types of power source and data differing priorities. We describe a QoS-aware geographic scheme based on solar-cell energy model. It exploits an algorithm (APOLLO) that periodically locally determines the topological knowledge range (KR) each node, estimated budget for following period includes current energy, predicted consumption, expected from solar cell. A second (PISA) runs node uses its to...

In solar-powered wireless sensor networks (SP-WSNs), nodes can continuously harvest energy to relieve the constraint problem in battery-powered WSNs. With advent of power transmission (WPT) technology, be charged remotely if harvested is insufficient. However, even SP-WSNs with WPT, an imbalance observed, which consumption around a sink node increases abnormally stationary. To solve this problem, recent studies have been conducted using mobile instead stationary one. Generally, clustering...

Rapid advances in wireless sensor networks require routing protocols which can accommodate new types of power source and data differing priorities. We describe a priority-based geographical scheme based on solar-cell energy model. It exploits an algorithm (APOLLO) that periodically locally determines the topological knowledge range each node, estimated budget for following period includes current energy, predicted consumption, expected from solar cell. The second (PISA) runs node uses its to...

Abstract Recently, solar energy emerged as a feasible supplement to battery power for wireless sensor networks (WSNs) which are expected operate long periods. Since can be harvested periodically and permanently, solar‐powered WSNs use the more efficiently various network‐wide performances than traditional battery‐based of aim is mostly minimize consumption extending network lifetime. However, using in requires different management from since highly varying supply. Therefore, firstly we...

Using solar power in wireless sensor networks (WSNs) requires a different approach to energy consumption from with battery-based nodes. Since can be harvested periodically, our aim is use this efficiently for specific network-wide performance goals, not just minimize the sustain network lifetime. Therefore, we propose flow control algorithm maximize amount of data collected by while cooperating allocation scheme order available which varies time time. Our runs on each node distributed manner...

A number of studies have been actively conducted to address limited energy resources in sensor systems over wireless networks. Most these are based on energy-aware schemes, which take advantage the residual from system's own or neighboring nodes. However, existing estimate solely voltage and current consumption, leading inaccurate estimations because real batteries is affected by temperature load. This misinformation makes a complete nonsense research, not allowed reliable WSN applications....

In energy-harvesting wireless sensor networks (WSNs), not only energy savings but also efficient utilization is required. This study suggests a scheme that indicates when to send data decided by predicting the remaining of node, and aggregates sensed increase amount arrived at sink node. With this method, if estimated node expected run over capacity, it transmits aggregated or else turns off its radio stores decrease blackout time nodes. Simulation results show proposed decreases nodes...

By utilizing mobile sinks in wireless sensor networks (WSNs), WSNs can be deployed more challenging environments that cannot connect with the Internet, such as those are isolated or dangerous, and also achieve a balanced energy consumption among sensors which leads to prolonging network lifetime. However, an additional overhead is required check current location of sink order for node transmit data sink, size proportional network. Meanwhile, composed solar-powered nodes have recently been...

The nodes in a wireless sensor network (WSN) are often clustered to improve the efficiency of data transmission, but this can cause an imbalance energy available at each node. This impairs transmission capability some and hence reduces connectivity. worsens as become defunct. We propose multilayer topology for long-term hybrid WSNs which contain both battery-powered energy-harvesting nodes. Each node periodically selects its own layer, depending on it has available, order balance levels...

In a wireless sensor network (WSN) environment with frequent errors, forward error correction (FEC) is usually employed at the link layer to achieve reliable transmission. FEC scheme, rate varies depending on length of parity used for recovery broken data. The longer length, higher possible rate. However, this also means that energy consumption increases. Meanwhile, in solar-powered WSN, each node can be periodically collected, but amount collected drastically harvesting environment,...