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首页> 外文期刊>Wireless personal communications: An Internaional Journal >A Reader Anti-collision Protocol for RFID-Enhanced Wireless Sensor Networks
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A Reader Anti-collision Protocol for RFID-Enhanced Wireless Sensor Networks

机译：RFID增强型无线传感器网络的阅读器防冲突协议

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摘要

Considering rapid developments in the technologies of both radio-frequency identification (RFID) systems and wireless sensor networks (WSN), an integration of the two technologies may lead to the formation of an RFID-enhanced WSN which would possess improved functions and capabilities. In the RFID-enhanced WSN, many reader-enhanced nodes have increasingly been employed. In such networks, RFID data contains a lot of duplication, because the same tag may be read multiple times, and collision may occur among readers, while energy constraints are also a serious problem. These three could in turn cause serious problems. In this paper, we have proposed our CSMA-based algorithm since it is light, efficiently minimizes all kinds of reader collision, and eliminates the duplicate data. For this purpose, we have used a separate control channel and a tag ID forwarding mechanism with a special contend-backoff mechanism based on the residual energy of RFID-enhanced nodes. Simulation consequences prove that our proposed mechanism achieves a smaller number of reader collisions as well as the highest network throughput, compared to existing reader collision reducing schemes.
机译：考虑到射频识别（RFID）系统和无线传感器网络（WSN）的技术的快速发展，两种技术的集成可能导致形成RFID增强的WSN，该WSN将具有改进的功能。在RFID增强的WSN中，越来越多地采用了许多读取器增强的节点。在这样的网络中，RFID数据包含很多重复项，因为同一标签可能会被多次读取，并且读取器之间可能发生冲突，而能量限制也是一个严重的问题。这三个反过来又可能引起严重的问题。在本文中，我们提出了基于CSMA的算法，因为该算法轻巧，有效地最大程度减少了各种读取器冲突，并消除了重复数据。为此，我们基于RFID增强节点的剩余能量，使用了单独的控制通道和带有特殊竞争退避机制的标签ID转发机制。仿真结果证明，与现有的减少阅读器冲突的方案相比，我们提出的机制可实现更少的阅读器冲突以及最高的网络吞吐量。

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