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Collision Arbitration Based on Different Slot Times for Slotted-Aloha RFID Systems

机译:时隙式Aloha RFID系统基于不同时隙时间的冲突仲裁

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摘要

Tag collision is a major problem in the field of multi-tag identification in RFID systems. To solve this problem, many RFID systems adopt their own collision arbitration algorithms based on framed-structure slotted Aloha (FSSA) due to the simplicity of implementation. The frame size, meaning the number of slots in a frame, is a very important factor to inventory tags' responses in the FSSA. How to assign the frame size is therefore crucial to the collision arbitration performance. Since the existing collision arbitration methods do not consider the slot times of each slot when assigning frame size, they may increase overall identification time. By involving the slot times, we improve the collision arbitration performance of the conventional methods. Simulation results show that collision arbitration based on the proposed method is superior to that based on the conventional methods, irrespective of the number of tags.
机译:标签碰撞是RFID系统中多标签识别领域中的主要问题。为了解决这个问题,由于实现的简单性,许多RFID系统采用基于帧结构时隙Aloha(FSSA)的自己的冲突仲裁算法。帧大小(即帧中的插槽数)是在FSSA中盘点标签响应的非常重要的因素。因此,如何分配帧大小对于冲突仲裁性能至关重要。由于现有的冲突仲裁方法在分配帧大小时并未考虑每个时隙的时隙时间,因此它们可能会增加总体识别时间。通过涉及时隙时间,我们提高了传统方法的冲突仲裁性能。仿真结果表明,无论标签数量如何,基于该方法的冲突仲裁均优于基于传统方法的冲突仲裁。

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