Nordic Semiconductor has filed a patent for a first radio device that enables wireless transmission of advertising messages and bi-directional channel sounding with another radio device. The device responds to scan requests and exchanges channel sounding measurements for improved communication. GlobalData’s report on Nordic Semiconductor 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 Nordic Semiconductor, M2M communication interfaces was a key innovation area identified from patents. Nordic Semiconductor's grant share as of January 2024 was 30%. Grant share is based on the ratio of number of grants to total number of patents.
Wireless communication device for advertising and channel sounding
The patent application (Publication Number: US20240022887A1) describes a method and system for channel sounding between radio devices, specifically focusing on Bluetooth Low Energy connectionless mode. The first radio device, equipped with a processor, performs channel sounding by synchronizing with a second radio device and transmitting sounding signals at specific radio frequencies. The system estimates the distance between the devices based on phase measurements and utilizes a multi-carrier phase ranging method for accurate distance estimation. Additionally, the first radio device scans for advertising messages from nearby devices and engages in bi-directional channel sounding with a third radio device based on received messages.
On the other hand, the second radio device, also equipped with a processor, synchronizes with the first radio device before performing channel sounding. It measures sounding signals transmitted by the first radio device at specific frequencies and transmits its own sounding signals in response. Similar to the first device, the second radio device estimates the distance between devices based on phase measurements and utilizes a multi-carrier phase ranging method for precise distance calculation. The system also involves scanning for advertising messages and engaging in bi-directional channel sounding with the first radio device based on received messages. The methods and systems described in the patent application aim to enhance communication and distance estimation between radio devices using Bluetooth Low Energy technology in a connectionless mode.
In summary, the patent application outlines a detailed process for channel sounding and distance estimation between radio devices operating in Bluetooth Low Energy connectionless mode. The methods described involve synchronization, transmission of sounding signals at specific frequencies, and utilizing phase measurements for accurate distance estimation. The system also includes scanning for advertising messages and engaging in bi-directional channel sounding to improve communication between devices.
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