u-blox has been granted a patent for a method and apparatus that estimate characteristic differences between wireless signals from the same location across different frequency ranges. The technology includes estimating combined arrival times and maintaining a database of characteristic differences for improved signal processing. GlobalData’s report on u-blox gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on u-blox, Perimeter security was a key innovation area identified from patents. u-blox's grant share as of June 2024 was 46%. Grant share is based on the ratio of number of grants to total number of patents.
Estimating differences between wireless signals from the same location
The granted patent US12015452B2 outlines a method for estimating characteristic differences between two wireless signals transmitted from the same location but within different frequency ranges. The method involves receiving both signals, processing them to identify differences in transmission time, carrier phase, and amplitude, and estimating a combined time of arrival based on these differences. This process includes aligning channel impulse responses derived from the two signals, combining them to create a unified response, and subsequently estimating the time of arrival from this combined response. The method also allows for the identification of multipath components and their contributions to the characteristic differences.
Additionally, the patent describes a system for maintaining a database of characteristic differences associated with groups of signals, which can be used to identify whether two signals were transmitted from the same location. The system processes received signals to estimate their characteristic differences and stores this information alongside identity data for each signal group. The database can be queried to retrieve characteristic difference information for specific signal groups, enhancing the ability to analyze and compare wireless signals. The patent also includes provisions for electronic communications devices that implement these methods, emphasizing the integration of receivers and processors to facilitate the estimation and analysis of wireless signal characteristics.
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