For wireless sensor networks (WSNs), many factors, such as mutual interference of links, battlefield applications and nodes exposed to the environment without good physical protection, result in being more vulnerable be attacked compromised. In order address this network security problem, a novel trust evaluation algorithm defined NBBTE (Node Behavioral Strategies Banding Belief Theory Trust Evaluation Algorithm) is proposed, which integrates approach behavioral strategies modified evidence...

More and more applications of location-based services lead to the development indoor positioning technology. As a part Internet Things ecosystem, low-power Bluetooth technology provides new direction for positioning. Most existing algorithms are applied specific situations. Thus, they difficult adapt actually complex environments different users. To solve this problem, paper proposes precise dead reckoning algorithm based on multiple sensors (DRBMs). address accuracy, improves traditional...

ABSTRACT With the rapid development of wireless sensor networks, issue designing a reasonable trust management has attracted more and research attention. Based on Bayesian Entropy, this paper proposes lightweight for networks. First, evaluated node's direct value is calculated by periodically updated according to combination effective history records adaptive decay factor. We use rather than all save nodes’ memory, factor enhances algorithm's accuracy dynamic. Then, confidence level value,...

With the rapid development of wireless sensor networks (WSNs), security WSNs is an important issue in this field because their vulnerabilities to attacks. Designing a reasonable trust management scheme that can evaluate relationships among nodes accurately challenging but meaningful task. In paper, credible Bayesian-based (BTMS) proposed. The overall value aggregated by both direct and indirect information. former calculated modified Bayesian equation updated sliding window. latter computed...

Long-term and high-precision positioning is the key to pedestrian indoor method. The estimation methods relying only on inertial measurement unit (IMU) itself lack external observations that can provide absolute information, cumulative error easily leads distortion of calculated trajectory. In this paper, based Extended Kalman Filter (EKF) algorithm, environmental magnetic field information taken as observation quantity, a method combining navigation proposed. suppressed from both yaw angle...

Trust management scheme has been regarded as a powerful tool to defend against the wide set of security attacks and identify malicious nodes. In this paper, we propose trust based on revised Dempster-Shafer (D-S) evidence theory. D-S theory is preponderant in tackling both random subjective uncertainty mechanism. A propagation mechanism including conditional transitivity dynamic recommendation aggregation developed for obtaining recommended values from third part We adopt flexible synthesis...

Dead-reckoning is an important method for pedestrian navigation. To aid successful navigation, it primarily uses the inertial measurement signal, which collected by unit (IMU) strapped to a segment of user's body or off-the-shelf sensor in consumer smartphone. The purpose this paper determine and compare effectiveness accuracy navigation systems (PNS) using foot-mounted waist-mounted IMUs handheld smartphones. experimenter wore IMU foot waist held smartphone front open space with...

Nodes in wireless sensor networks (WSNs) have the potential to be selfish without transmitting packets routing. This study mainly focuses on problem of reliable delivery mechanism WSNs, and authors’ objective is ensure stable cooperation among nodes for minimum routing cost at same time. Based performance metrics terms rate forwarding, correctly reporting event, energy remain, authors present a coalitional game model with characteristic function shared coalition members. Then an efficient...

Traditional radio-map-based localization methods need to sample a large number of location fingerprints offline, which requires huge amount human and material resources. To solve the high sampling cost problem, an automatic radio-map construction algorithm based on crowdsourcing is proposed. The employs crowd-sourced information provided by users when they are walking in buildings as source fingerprint data. Through variation characteristics users' smartphone sensors, indoor anchors (doors)...

Many existing routing protocols in Mobile Ad hoc Networks (MANETs) focus on finding paths dynamic networks without considering security. In this paper, we propose a trust model which evaluates neighbours' direct by factors of encounter time, mobility, and successful cooperation frequency. The revised D-S evidence theory is used to combine multiple recommended pieces obtain the value. Then based novel mechanism, trusted protocol named TDS-AODV extending AODV protocol. protocol, node makes...

ABSTRACT Trust management is suitable for handling the internal security problems in wireless sensor networks. However, trust schemes usually neglect selfishness of normal nodes and regard malicious as never cooperate. Thus, to ensure trustworthiness encourage cooperate, incentive mechanisms are pressing demand schemes. We propose an mechanism based on game theory. The interactions between unknown‐type modeled Bayesian games. A set parameters including players' action sets payoff matrix...

The performance and life expectancy of battery depend heavily on the management based SOC estimation in photovoltaic systems electric vehicles. objective work presented this paper is to develop a novel on-line for lead acid battery. proposed method consists two major subroutines: Open-Circuit-Voltage (OCV) extrapolation fuzzy logic compensation. determination initial OCV functions as basis Coulomb counting process. Thereafter dynamic compensated by model, which adopted discharging current...

At present, WiFi fingerprinting indoor positioning technology is a research hotspot, and the construction of radio map based on crowdsourcing can significantly reduce amount labor required. However, when users collect fingerprint information using data in practical applications, received signal strength (RSS) collected by user phones updates slowly will remain same for certain distance time. Therefore, inaccurate, thereby established also lead to inaccurate positioning. In order address this...

This paper proposes a novel weighted least squares (WLS) algorithm for single static source localization in wireless sensor networks (WSNs) using time difference of arrival (TDOA). Owing to the nonlinearity original distance equations derived from TDOA, it is difficult estimate location directly. So we first establish new linearizing approach give closed-form solution. By taking node as reference, all share same term range between and reference node. Utilizing simple algebraic means, can be...

Addressing the problem of vulnerability directly measured signal in field strain weighing to high-energy noise similar frequency bands, an adaptive VMD algorithm is proposed from perspective separation for decomposition and denoising weighing. In this paper, used determine optimal values two key parameters, namely, number layers penalty factor, avoid blindness parameter selection. The results are tested by parameters such as sample entropy, then original measurement adaptively decomposed...

Lifetime network is the main considering problem when deploying wireless sensor networks for integrity monitoring of pipeline infrastructures. And low lifetime always caused by unbalanced energy consumption in networks. So this paper, a sort data transmission approach based on probabilistic model put forward to solve and enhance lifetime. The optimal maximum introduced, which solved artificial fish school algorithm. A series simulation experiments are carried out verify effectiveness new...

In order to realize a methodical, effective cooperative stimulation for MANETs and search dynamic trust scheme in environment under high malicious ratio, we have proposed an evolutionary game-based model large scale this paper. First, the system members' pluralistic behavior has been covered by means of constructing complete multirisk level strategy space. Then trust-preferential built through numerical value mapping technology, which achieves aim that action is effectively constrained avoid...

Multihop localization is a popular approach for determining the positions of normal nodes in large-scale wireless sensor networks. However, most existing multihop studies assume that declared beacon are always reliable or even free errors, which not valid assumption practice. In this paper, we propose robust algorithm (RMLA) based on trust evaluation diminishing effect unreliable beacons accuracy node localization. Firstly, framework established basis evidence theory. According to geometric...

For large-scale wireless sensor networks (WSNs) with a minority of anchor nodes, multi-hop localization is popular scheme for determining the geographical positions normal nodes. However, in practice existing methods suffer from various kinds problems, such as poor adaptability to irregular topology, high computational complexity, low positioning accuracy, etc. To address these issues this paper, we propose novel Multi-hop Localization algorithm based on Grid‑Scanning (MLGS). First, factors...

Highly accurate positioning information can bring higher enhancement and value to basic applications. In the absence of infrastructure or third-party equipment, relying only on inertial measurement unit (IMU) itself results in severe drift. Aiming this challenge, we propose a high-precision localization method based multi-feature fusion body-area sensor networks achieve reliable low-drift over long periods time without need for assistance. The proposed mainly includes three parts: foot shank...