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首页> 外文期刊>IEEE systems journal >Adaptive Power Control Protocol With Hardware Implementation for Wireless Sensor and RFID Reader Networks
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Adaptive Power Control Protocol With Hardware Implementation for Wireless Sensor and RFID Reader Networks

机译：具有无线传感器和RFID读取器网络硬件实现的自适应功率控制协议

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摘要

The development and deployment of radio frequency identification (RFID) systems render a novel distributed sensor network which enhances visibility into manufacturing processes. In RFID systems, the detection range and read rates will suffer from interference among high-power reading devices. This problem grows severely and degrades system performance in dense RFID networks. Consequently, medium access protocols (MAC) protocols are needed for such networks to assess and provide access to the channel so that tags can be read accurately. In this paper, we investigate a suite of feasible power control schemes to ensure overall coverage area of the system while maintaining a desired read rate. The power control scheme and MAC protocol dynamically adjust the RFID reader power output in response to the interference level seen during tag reading and acceptable signal-to-noise ratio (SNR). We present novel distributed adaptive power control (DAPC) as a possible solution. A suitable back off scheme is also added with DAPC to improve coverage. A generic UHF wireless testbed is built using UMR/SLU GEN4-SSN for implementing the protocol. Both the methodology and hardware implementation of the schemes are presented, compared, and discussed. The results of hardware implementation illustrate that the protocol performs satisfactorily as expected.
机译：射频识别（RFID）系统的开发和部署提供了一种新颖的分布式传感器网络，该网络增强了制造过程的可视性。在RFID系统中，检测范围和读取速率会受到高功率读取设备之间的干扰的影响。在密集的RFID网络中，此问题严重恶化，并降低了系统性能。因此，这种网络需要媒体访问协议（MAC）协议来评估并提供对通道的访问，以便可以准确读取标签。在本文中，我们研究了一套可行的功率控制方案，以确保系统的总体覆盖范围，同时保持所需的读取速率。功率控制方案和MAC协议可响应标签读取期间看到的干扰水平和可接受的信噪比（SNR）动态调整RFID阅读器的功率输出。我们提出了新颖的分布式自适应功率控制（DAPC）作为可能的解决方案。 DAPC还添加了合适的退避方案以改善覆盖范围。使用UMR / SLU GEN4-SSN构建通用UHF无线测试平台，以实现协议。提出，比较和讨论了方案的方法论和硬件实现。硬件实现的结果表明，该协议可以令人满意地执行。

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