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RFID Reader Scheduling for Reliable Identification of Moving Tags

机译:RFID阅读器计划可可靠识别移动标签

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In dense radio frequency identification (RFID) systems, reader-to-reader interference may appear among readers operating nearby. When the anticollision algorithm is Frame Slotted Aloha (FSA), a usual solution is to multiplex the frames of interfering readers by means of a central controller. The scenario studied considers RFID tags attached to objects carried by conveyor belts or vehicles so that each tag crosses, in constant motion, one reader's interrogation region. The problem addressed consists of determining the length of the multiplexed FSA frames such that each object is successfully identified, with high probability, before exiting its interrogation region. In this paper, we develop a mathematical model, based on dynamic system theory, allowing us to obtain the configurations attaining the desired reliability objective, to show that some configurations present multiple equilibrium points and should be avoided, and to define the operating boundaries of the system. The model can also incorporate fading and capture effects.
机译:在密集的射频识别(RFID)系统中,读写器之间的干扰可能会在附近操作的读写器之间出现。当防冲突算法为帧时隙Aloha(FSA)时,通常的解决方案是通过中央控制器多路复用干扰读取器的帧。研究的场景考虑了RFID标签,这些标签附着在传送带或车辆所携带的物体上,因此每个标签以恒定的运动穿过一个阅读器的询问区域。解决的问题包括确定复用的FSA帧的长度,以使每个对象在退出其探询区域之前都能以较高的概率成功识别。在本文中,我们基于动态系统理论开发了一个数学模型,从而使我们能够获得达到所需可靠性目标的配置,以表明某些配置存在多个平衡点并且应避免使用,并定义了系统的运行边界。系统。该模型还可以合并衰落和捕获效果。

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