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In underwater sensor networks (UWSNs), information transmission is extremely challenging because of the underwater channel. Underwater acoustic channel suffers from long propagation delay and low bandwidth is inclined to packet losses. Hence, the design of an energy efficient communication system is challenging under the water. In this paper, we present an energy efficient clustered multi-hop routing...
Fundamental differences between underwater acoustic propagation and terrestrial radio propagation impose the design of new networking protocols. In this paper, a multichannel MAC protocol, MC-UWMAC, especially designed for underwater acoustic sensor networks, is proposed and evaluated. MC-UWMAC is a low power MAC protocol operating on multichannel using a single slotted control channel and multiple...
In most of wireless sensor network (WSN) applications, energy-efficiency and low end-to-end transmission delay (E2ETD) are essential requirements. This paper presents a contention based routing enhanced MAC protocol, named as CR-MAC, for E2ETD reduction in a multi-hop WSN. CR-MAC reduces E2ETD by optimizing the time interval between the successively sent data packets of a node in a scheduled flow...
In the wharf structure health monitoring systems, the systems exit low efficiency of data transmission and no effective data processing problems, which result in less effective reflecting the health status of the wharf structure. In order to improve the data transmission efficiency and make a better use of the data, an intelligent wireless sensor network (WSN) method and multi-sensor information fusion...
Data reduction is one of the most attractive way to conserve the limited energy resources of wireless sensor networks (WSNs). It aims to remove unnecessary data transmission. Therefore, data prediction and reduction mechanisms must be deployed at the source node in order to eliminate the redundant sensed data before sending them to the sink. In this paper, an energy efficient periodic distributed...
We propose a wireless power transfer (WPT) based underlay spectrum sharing scheme, where a primary user (PU) needs to harvest wireless energy from an access point (AP) and then transmit its data to AP using the harvested energy. In the same area, a secondary transmitter (ST) intends to communicate with a secondary receiver (SR). The secondary data can be transmitted along with the WPT, which can on...
Telemetrie Body Area Network (TBAN) system is one of the useful methods to realize improving user's body behavior and monitoring health condition. Not only showing physical parameters, by feedback of vital information to user, TBAN system is extended to the autonomous system closed to user. Getting such information, user is able to improve his body behavior consciously. Moreover, telemetric function...
A multi-cluster-head based clustering routing algorithm is researched and realized in order to achieve better balance the energy consumption of wireless sensor network nodes as well as promote the stability and extend the service life of the network. By taking cluster as the basic unit, it divides the wireless sensor network into multiple clusters, each of which includes a main cluster head node,...
Localization is one of application areas in WSN (Wireless Sensor Network) for determining the object position. A conventional localization system based on wireless protocol transmission is potentially susceptible from various security threats. Data information regarding object position transmitted to the authorized person should be secured. Raspberry Pi is one of suitable microcomputers for implementing...
With the development of Internet of Things and embedded computing technology, the smart home system has become a hot research spot of embedded systems. In this paper, through combining the Internet of Things, a smart home system based on zigbee and power line carrier communication technology is designed. In addition, the gateway is an important part of the smart home system, and its communication...
Nowadays in wireless network the energy consumption and sensor node energy renewable is major challenge. Which make sensor network weak and more critical. The problem of node reachability is considered and Amended Ant colony optimization technique is proposed for optimization. The proposed technique is used for the search of estimated solutions to distinct and endless optimization problems and for...
Nowadays, the problem of using minimum number of time slots for data aggregation such that sensors can work without data collision for data transmissions has received a great deal of attention in Wireless Sensor Network (WRSN). It is worth mentioning that there exists many approaches that are tried to reduce the number of time slots for data aggregation in WSNs. However, most of previous works are...
Wireless sensor network is an important component of Internet of Things. With the expansion of the network scale, sensor nodes with limited hardware resources and energy supply cannot meet the large-scale transmission and processing of vast amounts of information. Compressive sensing is introduced to improve the energy efficiency of data transmission. In this paper, a mobile data gathering strategy...
Wireless sensor networks are often placed in hostile and unattended areas, making the nodes exposed to many attacks. Node capture is one of the prominent attack in such networks. Whenever, a node is captured, its keys have to be revoked from the network by means of rekeying. We aim to optimize the problem of key revocation and rekeying by reducing the communication and computation overhead. An attack...
This article focuses on the utilization of a mobile robot as data mule for collecting and transferring data from a ground wireless sensor system (WSN). For the case, where the nodes' communication is impeded either due to a non-connected node, or due to excessive retransmissions caused by significant packet losses, the effective transmission rate is reduced and the energy consumption for the RF-communication...
With the advancement in energy harvesting, wireless powered communication networks overcome the problem of replacing fixed energy sources, e.g., batteries in difficult access areas of industrial networks. However, the harvested energy is not always enough to support reliable and low end-to-end data transmission in industrial wireless sensor networks (IWSNs). This poster introduces an energy utilization-concerned...
The wireless sensors deployed at the highway can ensure the safety of the traveling vehicles. However, the ribbon deployed wireless sensor network in the roadside infrastructure can easily to generate energy hole. Cooperative communication between sensors and vehicles is an effective way to improve this situation and reduce the energy consumption of the sensors. A cooperative relay selection algorithm...
Reliability is an important research issue in wireless sensor networks(WSNs). Many literatures about how to improve network reliability in WSNs have been proposed, however the research on establishing evaluation models of reliability for WSNs is yet insufficient. In this paper, a model to evaluate the reliability of wireless sensor networks (WSNs) is proposed. This network state based model can effectively...
The paper presents an enhanced special module system for correcting codes based on Residue Number System. The research of algorithms hardware and time complexity for error detection and correction has been conducted on the basis of the Residue Number System correcting codes, using the proposed module system. Implementation of error detection and correction devices on the Field-Programmable Gate Array,...
Technological advances have made Wireless Sensor Networks (WSN) more reliable, low cost, and widely used in a variety of applications. As WSN nodes are low power battery operated with limited lifespan, optimizing their resources (sensing, channel use, computing) is an essential task for the success of applications implemented over these networks. Even though this task could be challenging for large...
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