Low-frequency uplink signal-based positioning

JP2026090503APending Publication Date: 2026-06-02QUALCOMM INC
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
QUALCOMM INC
Filing Date
2026-02-25
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing 5G wireless communication systems face challenges in accurately determining the location of mobile devices, particularly in power-limited situations, due to limitations in uplink coverage areas and synchronization between cells, which affect the efficiency and accuracy of positioning methods.

Method used

Implementing uplink-based positioning techniques using an auxiliary uplink band for transmitting UL-PRS and downlink positioning signals across synchronized and non-synchronized cells, enabling single-cell and multi-cell round-trip time measurements to enhance location determination.

Benefits of technology

Enhances mobile device location accuracy and enables positioning in power-limited scenarios by utilizing uplink signal-based techniques, allowing for precise location estimation even in challenging cellular environments.

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Abstract

This provides a method for indicating resources for uplink-based positioning. [Solution] The method includes the steps of determining whether the UE is within the downlink coverage area of ​​the serving cell with respect to a first frequency band and the transmitting power of the serving cell, and outside the uplink coverage area of ​​the serving cell with respect to the transmitting power of the first frequency band and the UE; identifying a second frequency band supported by the UE, wherein the second frequency band includes frequencies below the lowest frequency of the first frequency band; and, based on the determination that the UE is outside the uplink coverage area of ​​the serving cell with respect to the first frequency band and the transmitting power of the UE, providing at least one PRS instruction indicating at least OFDM UL-PRS resources in the second frequency band for the UE.
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