A reliability-aware medium access control for unidirectional time-constrained WSNs
A reliability-aware medium access control for unidirectional time-constrained WSNs
复制标题
单向时间受限 WSN 的可靠性感知媒体访问控制
DOI：
10.1145/2834848.2834876
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Alejandro Masrur
中科院分区：
文献类型：
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作者：
Philip Parsch;Alejandro Masrur
随着物联网的出现，对互连性的需求不断增加，无线传感器网络（WSN）变得越来越重要。 WSN 通常由能够传输和接收数据的双向节点组成。然而，在家庭自动化和人体局域网等应用中，数据需要在一个方向上传输，即在单跳网络中从传感器到接收器。因此，可以使用单向节点来大大降低成本。由于单向节点无法确认或重新传输数据包，因此所得网络非常不可靠。为了克服这个问题，我们提出了一种媒体访问控制（MAC）技术，该技术可以配置为满足所需的可靠性要求，同时满足最大延迟约束或期限。我们的技术基于最坏情况下数据包丢失的概率分析，并且与文献中的其他方法相比，允许更节能的设计。为了评估所提出的技术，我们基于 OMNeT++ 进行了大量实验和详细模拟。
Wireless sensor networks (WSNs) are gaining in importance with an increasing need for interconnectivity in the advent of Internet of Things. A WSN typically consists of bidirectional nodes that are able to transmit and receive data. However, in applications such as home automation and body area networks, data needs to be conveyed in one direction, i.e., from sensors to a sink, in a single-hop network. Hence, unidirectional nodes can be used instead reducing costs in a considerable manner. Since unidirectional nodes are unable to acknowledge or retransmit packets, the resulting networks are strongly unreliable. To overcome this problem, we propose a medium access control (MAC) technique that can be configured to meet desired reliability requirements while fulfilling a maximum delay constraint or deadline. Our technique is based on a probabilistic analysis of packet losses in the worst case and allows, in contrast to other approaches from the literature, a more energy-efficient design. In order to evaluate the proposed technique, we present a large set of experiments and detailed simulations based on OMNeT++.