An LTE-Harvesting BLE-to-WiFi Backscattering Chip for Single-Device RFID-Like Interrogation

📋 论文概要

该论文提出了一种利用LTE信号进行能量收集、实现BLE到WiFi反向散射通信的芯片，使得单个设备即可像RFID一样进行询问，解决了传统反向散射需要两个外部设备的问题。

💡 主要创新点

• 利用环境中的LTE信号作为能量源，无需专用发射器
• 实现BLE到WiFi的反向散射通信，兼容现有标准
• 单设备RFID式询问架构，降低系统复杂度和部署成本

🏷 关键词

📄 原文摘要

Dinesh Bharadia, Patrick P. Mercier University of California, San Diego, CA *Equally Credited Authors (ECAs) Recent work in backscatter modulation has enabled very low-power communication between an IoT tag and commodity hardware such as WiFi or BLE transceivers [1-4], enabling a new set of exciting IoT applications such as on-body sensors or asset trackers that demand low power and low deployment cost via compatibility with existing standards. However, such backscatter approaches tend to require two external devices: a transmitting tone generator [3,5] or access point (AP) [1,2,4] and a receiving AP [15] in order to perform tone-to-WiFi [3,5], WiFi-to-WiFi [1,2,4] or BLE-to-BLE [4] communication without requiring power-expensive RF signal generation on the backscattering IoT tag (Fig. 21.5.1, top). Unfortunately, not all applications natively have multiple available APs, and deployment of additional infrastructure can be expensive.

👥 作者与机构

Shih-Kai Kuo*, Manideep Dunna*, Hongyu Lu, Akshit Agarwal,