Qualcomm has been granted a patent for methods, systems, and devices for wireless communications. The patent describes a method for a user equipment (UE) to improve the reliability of receiving downlink transmissions from a base station. The UE activates a notch filter at a specific time before the downlink transmission begins, filters interference from the signal, and communicates with the base station based on the filtered signal. GlobalData’s report on Qualcomm gives a 360-degree view of the company including its patenting strategy. Buy the report here.
Smarter leaders trust GlobalData
Access deeper industry intelligence
Experience unmatched clarity with a single platform that combines unique data, AI, and human expertise.
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 September 2023 was 44%. Grant share is based on the ratio of number of grants to total number of patents.
Patent granted for activating notch filter to improve wireless communication
A recently granted patent (Publication Number: US11778558B2) describes a method and apparatus for wireless communication at a user equipment (UE). The method involves receiving one or more downlink grants and activating a notch filter at a specific time before the beginning of a downlink transmission associated with the grants. The activated notch filter is used to filter interference from a signal at the UE, allowing for improved communication with a base station based on the filtered interference.
The method includes waking up from a sleep state at the specific time, with the activation of the notch filter being based on this wake-up. After waking up and activating the notch filter, the interference is measured, and based on this measurement, the amplitude, frequency, or phase of the interference is identified. The filtering of the interference at the UE is then performed based on these identified parameters.
Additionally, the method involves activating one or more analog phase locked loops upon waking up from the sleep state to identify the phase associated with the interference. These analog phase locked loops remain deactivated while the UE is in the sleep state.
The patent also describes determining a second time associated with the beginning of the downlink transmission, which is later than the first time. The difference between the first time and the second time is equal to or greater than a threshold period of time. The interference is filtered after this second time.
The notch filter is configured with multiple filtering coefficients at the first time, and the accuracy of the configured notch filter is determined based on one or more measurements of the interference. The accuracy threshold is satisfied prior to the second time associated with the beginning of the downlink transmission.
The method may also involve performing a set of channel measurements to determine whether the notch filter should be activated at the first time. The convergence of the notch filter to the interference occurs before the beginning of the downlink grants.
The apparatus described in the patent includes a processor, memory, and instructions stored in the memory. These instructions enable the apparatus to perform the method steps, including receiving downlink grants, activating the notch filter, filtering interference, and communicating with a base station.
In summary, the granted patent presents a method and apparatus for wireless communication that involves activating a notch filter to filter interference at a specific time before a downlink transmission. This allows for improved communication with a base station and can be particularly useful in reducing interference from spurs generated at the UE.
To know more about GlobalData’s detailed insights on Qualcomm, buy the report here.
Data Insights
From
The gold standard of business intelligence.
Blending expert knowledge with cutting-edge technology, GlobalData’s unrivalled proprietary data will enable you to decode what’s happening in your market. You can make better informed decisions and gain a future-proof advantage over your competitors.
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.
