Guangsong Yang

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Energy-efficient is a key problem of Under-water acoustic sensor network (UASN). Base on analysis of energy consumption for LEACH in underwater channel, we propose a novel scheme for cluster-head selection to ensure nodes energy load balance by considering residual energy of candidate nodes and the distance to SINK, which can lower the probability of(More)
In order to extend the range of the RFID system, it is necessary to integrate RFID into a sensor network. In this paper, we first studied a two-tiered RFID sensor network architecture, in which readers collect data from the tags, and then send the data to the processing center. Based on this structure, we analyzed energy consumption factors of the reader.(More)
Improved security is especially important for the success of the wireless sensor network (WSN), because the data collected are often sensitive and the network is particularly vulnerable. While a number of approaches have been proposed to provide security solutions against various threats to the WSN, most of which are based on the layered design. In this(More)
A layered efficient data aggregation scheme based on compressed domain is presented and implemented to overcome the problem of excessively high amount of data transmission and excessive energy consumption in wireless sensor networks. Sensor networks are configured and their nodes are arranged in a hierarchy of multistage clusters. On this structure,(More)
In this paper, an energy efficient route finding scheme is proposed based on the directional antenna for wireless sensor networks (WSNs). First we derive the relationship between the number of hops and the energy consumption within a certain source-destination distance by analyzing the major factor influencing the power consumption on wireless channels.(More)
A novel cross-layer routing technique was proposed for ad hoc networks with multi-rate mechanism based on node monitoring information. Combining SNR measure on physical layer and delay estimate on MAC layer, we propose a routing metric which selects the route with wide bandwidth, lower delay and less congestion. The routing technique is shown to improve(More)
Abstract—To balance energy consumption for nodes in wirelesssensor network (WSN) is an important considering factor. Asimple model is set up to analytically evaluate the energyconsumption in WSN by using aggregation mechanism. It isshow that energy consumption of an aggregation nodeincreases so rapidly in the neighborhood of the sink node. Amodified(More)
In this study, the hybrid Au-Ag hexagonal lattice of triangular and square lattice of quadrate periodic nanoparticle arrays (PNAs) were designed to investigate their extinction spectra of the localized surface plasmon resonances (LSPRs). First, their simulating extinction spectra were calculated by discrete dipole approximation (DDA) numerical method by(More)
Power control is an important component of the resource management strategy in wireless networks to achieve higher utilization and/or better quality of service. In this paper, we present a framework of decentralized power control called trajectory-based power control (TBPC), by setting the SIR target of each wireless station according to some trajectory,(More)
The nanosphere lithography (NSL) method can be developed to deposit the Au-Ag triangle hexagonal nanoparticle arrays for the generation of localized surface plasmon resonance. Previously, we have found that the parameters used to form the NSL masks and the physical methods required to deposit the Au-Ag thin films had large effects on the geometry properties(More)