Nokia has been granted a patent for a method and apparatus that utilizes two automatic gain control units to receive and process data signals and reflected radar signals. The system switches between the two units to optimize signal reception. GlobalData’s report on Nokia 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 Nokia, adaptive video coding was a key innovation area identified from patents. Nokia's grant share as of September 2023 was 55%. Grant share is based on the ratio of number of grants to total number of patents.
Method and apparatus for switching between automatic gain control units
A recently granted patent (Publication Number: US11774550B2) describes an apparatus and method for radar signal transmission and reception. The apparatus includes at least one processor and memory with computer program code. The apparatus is configured to transmit a radar signal via a first antenna array and receive a reflected radar signal via a second antenna array. It also receives a first data signal or a pilot signal via the second antenna array. The apparatus uses a first automatic gain control unit to receive the first data signal and a second automatic gain control unit to receive the reflected radar signal. It can switch between using the two automatic gain control units.
Additionally, the apparatus can transmit a second data signal via the first antenna array and receive a third data signal via the first antenna array. The received first data signal and the received reflected radar signal use the same carrier frequency. The apparatus can perform time averaging for the received signals and determine a beat frequency based on the carrier frequencies of the reflected radar signal. It can also determine the velocity of a target based on the beat frequencies.
The apparatus can receive automatic gain control state information, which indicates whether a received signal is the reflected radar signal or not, or a state change for switching between the two automatic gain control units. This information can be used to adapt the power amplifier operation point or enable/disable gain adjustment in the automatic gain control units.
Another embodiment of the apparatus includes a first antenna array with a first subarray for transmitting the radar signal and a second subarray for receiving the reflected radar signal. The apparatus can transmit a second data signal using both subarrays. It can also receive antenna array partitioning state information, indicating whether the subarrays are used for transmitting or receiving.
In summary, the granted patent describes an apparatus and method for radar signal transmission and reception, including the use of multiple antenna arrays, automatic gain control units, and carrier frequency analysis for determining target velocity. The apparatus can switch between different gain control units and adapt its operation based on received signals and state information.
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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
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.
