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With the advancement of MEMS technologies, sensor networks have opened up broad application prospects. An important issue in wireless sensor networks is object detection and tracking, which typically involves two basic components, collaborative data processing and object location reporting. The former aims to have sensors collaborating in determining a concise digest of object location information,...
A wireless sensor network (WSN) is highly vulnerable to security attacks due to the numerous resource-constrained devices. It is crucial to provide security services to WSN to ensure its survival. Focusing on the authentication in WSN, we propose a robust entity authentication protocol in WSN. The protocol provides authentication services based on secret sharing scheme that ensures the survivability...
Wireless sensor networks are widely deployed in various fields. One of the key issues in the implementation of such networks is maximizing the area detected and minimizing the number of sensor nodes. In this paper, we propose a systematic framework for how to choose the minimum sensor nodes from those which are originally distributed randomly in a sensor network. Integer linear integer programming...
According to the limitation of resources in wireless sensor network (WSN), this paper presents a new key pre-distribution scheme based on plane grid. It helps not only to economize the space of storage and keep low consumption, but also ensure that all neighborspsila nodes can establish pair-wise keys directly, however, has a poor safety performance. Then we extend the scheme to three-dimensional...
A wireless network consisting of a large number of small sensors with low-power transceivers can be an effective tool for gathering data in a variety of environments. The data collected by each sensoris communicated through the network to a single processing centerthat uses all reported data to determine characteristics of theenvironment or detect an event. A critical aspect of applicationswith wireless...
With the quick development in the application design of sensor networks, appropriate middleware, which provides efficient service for concurrent applications taking account into the scarce resources and sensor energy, is needed, which provides efficient service for concurrent applications taking account into the scarce resources and sensor energy. In this paper, we propose a novel message oriented...
A large number of ultra small satellites forming a wireless sensor network in space are able to be incorporated in space missions which are traditionally difficult for an individual satellite. Such a satellite-based communication network always needs higher energy efficiency to ensure a longer network lifetime. In this paper, a collaborative and self-organized algorithm is proposed to enhance energy...
Wireless sensor networks (WSN) are used in many spheres, such as industry, commerce and military. WSN is composed of hundreds of thousands of sensor nodes with limited energy, computation and storage capacities. Thus the data aggregation technique becomes important because it can help to improving bandwidth usage and energy utilization. But the unprotected aggregation schemes are vulnerable because...
Due to the fact that wireless sensor nodes are spatially distributed throughout the area of interest, event detection must be implemented in a distributed way. Unlike related distributed detection schemes, our proposed approach does not need a pre-designated fusion node. This greatly improves network scalability. In this paper, we provide closed-form expressions for the probability of detection error...
This paper discusses placement of sensor nodes in wireless sensor networks. Since the large number sampling points in sensing range of the sensor, the traditional methods, such as greedy algorithm or linear programming model, do not work well. Thus, we create a new method, the grid-based algorithm. First we determine the number of the selected sensor nodes based on the probability theory. Then an...
Collaborative working manner of individual satellite nodes demand totally distributed algorithms and protocols. The mobile nature of these nodes requires that these algorithms and protocols must be adaptive to the ceaseless topology changes. This paper proposes an adaptive decision making function and weight factor in a highly efficient algorithm for the distributed nodes, which helps solving the...
In wireless networks, transmission power control (TPC) can save energy and decrease transmission latency. Due to the characteristics of wireless sensor networks (WSNs), the TPC has to be distributed, which presents a significant design challenge. We propose a simple distributed approach to TPC in this paper, and evaluate its performance.
Wireless sensor networks will be widely deployed in the future for monitoring important environmental conditions, security, and health care. One of the most important challenges in the implementation of such networks is maximizing the area detected and minimizing energy dissipation in the movement. In this paper, we present some effective methodology for modeling the problem of maximum cover and minimizing...
Energy saving is the most critical problem in sensor networks and dominates the design objectives. Due to the unique characteristics of sensor networks, to design energy-efficient modulation schemes, both the energy transmitted through radio channels, and the energy spent in the circuitry and MAC protocols, should be considered. In light of this observation, we propose a noncoherent FSK based flexible...
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