RFID传感网络中多阅读器碰撞算法的研究

Study on Reader Anti-Collision Algorithm in RFID Sensor Networks

为了解决RFID传感网络中阅读器与阅读器之间的信号的碰撞问题提出了防碰撞的概率功率控制算法。该算法利用各阅读器的发射功率在同一时隙服从不同的概率分布,从而来减少相互之间的干扰,获得最大的阅读范围。功率的概率分布采用β分布。仿真结果表明,概率功率控制算法能有效地防止阅读器信息碰撞,提高阅读器的读写范围。

In order to avoid signal collision in dense readers RFID sensor networks,an anti-collision algorithm called Probabilistic Power Control is proposed.The algorithm changed the reader transmitter power with a probability distribution at the same time slot,so that interference between readers reduced and all readers achieved the best read range.The probability distribution of power is β.Simulation results show that the Probabilistic Power Control algorithm can effectively solve reader collision in dense reader network and enhance the scope of readers to read and write.