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According to sensor networks' characteristics and their requirements on field real-time data monitoring, a kind of lightweight sensor network protocol is proposed in this paper. In this protocol several frame types are introduced into a sensor network's link layer. A new coming node registers itself as a slave node by sending an identify frame. The master node finds slave nodes out of function in...
The seamless combining with context-aware sensors and numerous devices and e-home server will soon become a part of our home environment in the near future. We name it as a context-aware home based on ubiquitous computing concept. This context-aware home reduces participations of users in order to realize a ubiquitous computing and automates various services. Therefore, the risk of privacy violation...
Current generalized multi-protocol label switching (GMPLS) based control plane (CP) can not alarm the faults on the data plane actively. A sensor-based performance monitoring mechanism (SBPMM) is proposed in this letter to solve this problem. The deployment and realization of SBPMM are also presented, along with the extension on current GMPLS protocols. Experimental results show the better performances...
A principal factor in sensor network design is energy efficiency. In this work, we propose to extend the lifetime of sensor networks using appropriate choice of sensor node distribution. The key idea of our scheme is to deploy more nodes in areas of extensive energy usage. Using this scheme of sensor node distribution, we use probabilistic angular routing to route data packets from the sensor nodes...
This paper presents a distributed fermat-point range estimation strategy, which is important in the moving sensor localization applications. The fermat-point is defined as a point which minimizes the sum of distances from three sensors inside a triangle. This point is indeed at the trianglepsilas center of gravity. We solve the problems of large errors and poor performance in the bounding box algorithm...
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