Verfahren und vorrichtung zur passiven positionierung einer intermodulationsquelle

AT1921032TUndetermined Publication Date: 2026-05-15HUAWEI TECH CO LTD
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Patent Information

Application Number
AT2021857287T
Authority / Receiving Office
AT · AT
Patent Type
Patents
Current Assignee / Owner
Priority Date
2020-08-20
Filing Date
2021-06-04
Publication Date
2026-05-15
Estimated Expiration
2041-06-04

AI Technical Summary

Technical Problem

Passive inter-modulation interference in wireless communication systems is challenging to accurately and cost-effectively identify without relying on external devices, particularly in closed structures like cables or cavity filters, as conventional methods are limited by their working mechanisms and applicability.

Method used

A network device, such as a base station or baseband unit, performs a scanning process by sending downlink signals with different frequencies and receiving uplink PIM signals to determine the PIM source within the system, using precoding and weight matrices to enhance signal power and accuracy, without the need for external devices.

Benefits of technology

This method allows for accurate and cost-effective identification of PIM sources within the system, improving communication system performance and radio resource utilization by eliminating interference, and is applicable to various wireless communication systems without the limitations of conventional methods.

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Abstract

This application provides a passive inter-modulation source positioning method and an apparatus, and relates to the field of wireless communications technologies. The method includes: A network device sequentially performs a scanning process on each of a plurality of scanning spots by using the following steps: sending a plurality of downlink signals with different frequencies for a first scanning spot by using a transmit antenna, and receiving an uplink PIM signal for the first scanning spot by using a receive antenna, where the first scanning spot is any one of the plurality of scanning spots, and the uplink PIM signal is generated by excitation by any at least two of the plurality of downlink signals; and the network device determines a PIM source from the plurality of scanning spots based on uplink PIM signals respectively corresponding to the plurality of scanning spots. In this way, the PIM source can be positioned by using the network device without relying on an external device.
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