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As distinct SG applications have different communication requirements in terms of reliability, latency, bandwidth, and so on, it is obviously infeasible to rely on a single communication technology for SG communications. Therefore, a hybrid communication architecture integrating both low latency fiber optic and flexible wireless technologies should be a promising candidate, which gives rise to the...
This paper presents a design of reconfigurable hardware platform for wireless sensor networks to achieve high flexibility and robustness in system operation and resource utilization. The goal of this research is to develop a new type of sensor networks with cognitive features (e.g., context awareness and situation understanding) such that human behavioral biometrics can be measured through distributed...
This paper is based on wireless sensor network security evaluation model. First, start from the analysis of the current assessment model, then in the analysis of the structure wireless sensor networks, proposed the structure for the safety assessment. Then improve the lack of the AHP, and make the result as a preliminary calculation, constructing the fuzzy neural network model for safety assessment.
Geographic routing is attractive in wireless sensor networks due to its efficiency and scalability. Previously proposed geographic routing protocols commonly employ a maximum- distance greedy forwarding technique. However, recent experiments also have shown that wireless link can be extremely unreliable. Simple greedy forwarding will cause high packet drop rate in realistic link environment. Scarce...
A particular challenge in maintaining extended wireless sensor networks (WSNs) lifetime lies in achieving communications with low power. For better understanding of the design trade offs of WSNs, a more accurate power consumption model for wireless sensor node is proposed. Different from models ever showed, in which the power consumption of each component in WSN node is assumed constant, the new one...
Due to the high sensor failure probability in WSN, there will be some "holes" in the sensor network which block the routing. The void problem hasn't been handled well in current real-time routing protocols. In this paper, we present a novel fault-tolerant real-time routing protocol FT-SPEED. In FT- SPEED, void announces scheme is proposed to prevent the packets reaching the void through...
Different from the traditional wireless networks, in wireless sensor networks(WSNs), power consumption is a critical aspect, because current nodes are always supported by constrainedenergy battery. A particular challenge in maintaining extended battery lifetime lies in achieving communications with low power. For better understanding of the design trade offs of WSNs, a more accurate power consumption...
Time synchronization is a critical middleware service of wireless sensor networks. Since the performance of time synchronization algorithm is greatly influenced by many factors, benchmark for evaluating time synchronization algorithm is not only difficult but also urgently needed. Software simulation is a good solution especially in the comparison between similar algorithms. In this paper, we presented...
While a lot of research has been done on some important aspects of WSN such as architecture and protocol design, supporting quality of service in WSN is still a largely unexplored research field. An application-specific QoS has been defined as the sensor network resolution. The mathematical Gur game algorithm is used to achieve optimal active sensor number. In this paper, we design a novel energy-aware...
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