The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Probabilistic forwarding is one of the routing methods that neighbors are selected as the next hop according to probability. The probability calculation method is different for different forwarding methods. Our work is based on selective forwarding and the selective forwarding probability based on the node degree and link loss is presented to increase the reliability of selective forwarding. The effect...
This paper presents a performance analysis comparison for different topology types that can be used with an improved fault-tolerant beacon vector routing (BVR) protocol. The topology types of mesh, torus, FCR, and communication graph are compared. The performance of these topology types is analyzed using BVR and three-phase fault-tolerant BVR. Performance metrics include throughput, latency, overhead,...
Frequency-hopping is a kind of secure solution in wireless communication field. We propose two novel mechanisms based on differential frequency-hopping to prevent those attacks like jamming, eavesdropping, tampering, etc. in wireless sensor networks (WSN). We also present the deployment scheme of our secure solutions. The analysis in this paper indicates that these two solutions have a number of good...
A fully CMOS integrated radio frequency (RF) transceiver for wireless sensor networks in sub-GHz ISM-band applications is implemented and measured. The IC is fabricated in 0.18-mum CMOS technology and packaged in LPCC package. The fully monolithic transceiver consists of a receiver, a transmitter and a RF synthesizer with on-chip VCO. The chip fully complies with the IEEE 802.15.4 WPAN standard in...
Resource constraints of sensor nodes make infeasible to use traditional key management techniques such as public key cryptography for security service of distributed sensor network. Pairwise key establishment is one of the efficient ways to achieve security service. To alleviate the study of novel pairwise key predistribution techniques, this paper presents an efficient framework for establishing...
Communication systems are essential in the coordination and planning of emergency and disaster relief operations (fire, earthquake, terrorism). Unfortunately, existing systems often provide minimal communication infrastructure for supplying information about the nature or the extend of an emergency or disaster area. Wireless sensor networks are a promising method for providing real-time feedback from...
This paper presents the work done in designing and fabricating miniaturised inertial measurement units (IMU's) for 2 distinct applications: a 25mm form factor wireless sensor network platform and a novel display interface. The 2 IMU's developed for the novel display interface are a low-dynamics sensor module that includes a 3-axis magnetometer and a 2-axis inclinometer and high-dynamics sensing module,...
In this paper, we present a novel hierarchical architecture for a large wireless sensor network wherein sensors are arranged into a multilayer architecture with the nodes at each layer interconnected as a de Bruijn graph and provide a hierarchical routing algorithm in the network. Using our approach, every sensor obtains a unique node identifier addressed by binary addressing fashion. We show that...
This paper presents MobiQuery, a spatiotemporal query service that allows mobile users to periodically gather information from their surrounding areas through a wireless sensor network. A key advantage of MobiQuery lies in its capability to meet stringent spatiotemporal performance constraints crucial to many applications. These constraints include query latency, data freshness and fidelity, and changing...
Since sensor networks can be composed of a very large number of nodes, the developed protocols for these networks must be scalable. Moreover, these protocols must be designed to prolong the battery lifetime of the nodes. Typical existing routing techniques for ad hoc networks are known not to scale well. On the other hand, the so-called geographical routing algorithms are known to be scalable but...
Wireless sensor networks (WSNs) consists of unattended sensors with limited storage, energy (battery power) and computation and communication capabilities. So, energy-efficient mechanism for wireless communication on each sensor node is so crucial for wireless sensor networks. This paper firstly makes a summary to power control and the existing routing metrics then finds the several key characteristics...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.