移动设备中组延迟的校准
By employing closed-loop calibration technology in the antenna array of mobile devices, the transmission and reception time delays of signals are measured and calibrated, solving the problem of insufficient accuracy in group delay calibration and improving the measurement accuracy of positioning reference signals and the accuracy of position determination.
CN116057864BActive Publication Date: 2026-07-17QUALCOMM INC
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- QUALCOMM INC
- Filing Date
- 2021-07-22
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
In wireless communication systems, insufficient group delay calibration accuracy of mobile devices affects the timing measurement accuracy of positioning reference signals, leading to inaccurate location determination.
Method used
A closed-loop calibration technique is employed to improve accuracy by measuring the transmission and reception time delays of signals in the antenna array of a mobile device, including near-field radiation closed loop and conduction closed loop.
Benefits of technology
This improves the group delay calibration accuracy of mobile devices in wireless communication systems, thereby enhancing the timing measurement accuracy of positioning reference signals and improving the accuracy of location determination.
✦ Generated by Eureka AI based on patent content.
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Figure CN116057864B_ABST
Abstract
在移动设备的前端结构中的发送和接收组延迟可以使用闭环校准来确定。所述闭环可以是移动设备的天线阵列中的天线对之间的近场辐射闭环。可以针对多个天线对测量基于发送时间和接收时间的延迟，由此可以确定单个路径内的发送和接收组延迟。天线之间的信号的传播延迟可以被包括在组延迟校准中以提高精度。在另一实施方式中，可以使用收发器中或射频切换网络中的传导闭环来校准组延迟。由闭环和天线之间的组件引起的延迟的预先表征可以被包括在组延迟校准中，以提高精度。
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