Qualcomm. has been granted a patent for methods and apparatuses that resolve aliasing ambiguities in positioning reference signals (PRS) within wireless networks. The technology utilizes previous position estimates and a multi-stage PRS configuration to enhance accuracy in determining true positioning measurements for user equipment. GlobalData’s report on Qualcomm 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 Qualcomm, IoT-5G convergence was a key innovation area identified from patents. Qualcomm's grant share as of June 2024 was 47%. Grant share is based on the ratio of number of grants to total number of patents.
Positioning measurement resolution in wireless networks
The patent US12047904B2 describes a positioning engine designed for user equipment (UE) within a wireless network, focusing on accurate position location. The engine comprises at least one memory and a processor that receives location information from another entity in the network. This information is derived from a positioning reference signal (PRS) that utilizes a subset of tones within a PRS bandwidth, generating multiple potential positioning measurement results. The processor is tasked with determining a true positioning measurement result by leveraging various inputs, including different types of PRS signals, rough distance estimates between entities, and search windows to refine the results.
The claims further elaborate on the types of positioning measurement results that can be derived, such as time of arrival (TOA) and reference signal time difference (RSTD). The positioning engine can utilize different configurations of PRS signals, including comb-N PRS signals, which can introduce aliasing ambiguities. The method also outlines how the engine can incorporate previous position estimates and known locations to enhance accuracy. Additionally, the engine is capable of configuring search windows to assist in identifying a single positioning measurement result from the possible outcomes, ultimately determining the precise location of the UE based on the true positioning measurement result.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
