ASCENT: adaptive self-configuring sensor networks topologies
ASCENT: adaptive self-configuring sensor networks topologies
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DOI：
10.1145/510726.510736
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发表时间：
2004-05
影响因子：
7.9
通讯作者：
Alberto Cerpa;D. Estrin
中科院分区：
文献类型：
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作者：
Alberto Cerpa;D. Estrin
微传感器和无线电技术的进步使小型但智能的传感器能够用于广泛的环境监测应用。每个节点的低成本允许这些传感器和执行器的无线网络密集分布。这些密集网络中的节点协调执行分布式传感和致动任务。此外，如本文所述，节点还可以协调利用高密度提供的冗余，以延长整个系统的寿命。大量的节点部署在这个系统中排除手动配置，和环境动态排除设计时的预配置。因此，节点必须自我配置以建立在严格的能量约束下提供通信的拓扑。ASCENT建立在这样的概念上，即随着密度的增加，只有一个节点子集是建立路由转发骨干网所必需的。在ASCENT中，每个节点评估其连接性，并根据测量的操作区域调整其在多跳网络拓扑中的参与。本文激励和描述了ASCENT算法，并提出了分析，仿真和实验测量。我们表明，该系统实现了线性增加的能量节省的密度和所需的收敛时间的情况下，节点故障，同时仍然提供足够的连接的函数。
Advances in microsensor and radio technology enable small but smart sensors to be deployed for a wide range of environmental monitoring applications. The low-per node cost allows these wireless networks of sensors and actuators to be densely distributed. The nodes in these dense networks coordinate to perform the distributed sensing and actuation tasks. Moreover, as described in this paper, the nodes can also coordinate to exploit the redundancy provided by high density so as to extend overall system lifetime. The large number of nodes deployed in this systems preclude manual configuration, and the environmental dynamics precludes design-time preconfiguration. Therefore, nodes have to self-configure to establish a topology that provides communication under stringent energy constraints. ASCENT builds on the notion that, as density increases, only a subset of the nodes is necessary to establish a routing forwarding backbone. In ASCENT, each node assesses its connectivity and adapts its participation in the multihop network topology based on the measured operating region. This paper motivates and describes the ASCENT algorithm and presents analysis, simulation, and experimental measurements. We show that the system achieves linear increase in energy savings as a function of the density and the convergence time required in case of node failures while still providing adequate connectivity.