17949382. UPLINK DOPPLER METRIC ESTIMATION BASED ON AN UPLINK REFERENCE SIGNAL simplified abstract (QUALCOMM Incorporated)

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UPLINK DOPPLER METRIC ESTIMATION BASED ON AN UPLINK REFERENCE SIGNAL

Organization Name

QUALCOMM Incorporated

Inventor(s)

Michael Levitsky of Rehovot (IL)

Assaf Touboul of Netanya (IL)

Ran Berliner of Kfar-Aviv (IL)

Shay Landis of Hod Hasharon (IL)

Lior Uziel of Hod Hasharon (IL)

UPLINK DOPPLER METRIC ESTIMATION BASED ON AN UPLINK REFERENCE SIGNAL - A simplified explanation of the abstract

This abstract first appeared for US patent application 17949382 titled 'UPLINK DOPPLER METRIC ESTIMATION BASED ON AN UPLINK REFERENCE SIGNAL

Simplified Explanation

Methods, systems, and devices for wireless communications are described in this patent application. The innovation focuses on improving the communication between a base station and a user equipment (UE). Here are the key points:

  • The base station determines the subcarrier spacing and carrier frequency used by the UE for communication.
  • Based on the UE's subcarrier spacing and carrier frequency, the base station selects a sounding reference signal (SRS) configuration for the UE.
  • The SRS configuration defines the temporal spacing between repetitions of the SRS.
  • The base station indicates the SRS configuration to the UE, enabling the UE to transmit repetitions of the SRS according to the configuration.
  • The base station measures the SRS repetitions from the UE to determine the Doppler frequency for the uplink channel.
  • The uplink Doppler frequency is then used by the base station to select a demodulation reference signal (DMRS) configuration for the UE.

Potential Applications

This technology has potential applications in various wireless communication systems, including:

  • Cellular networks: It can enhance the performance and reliability of communication between base stations and user devices in 4G and 5G networks.
  • Internet of Things (IoT): The improved communication can benefit IoT devices that rely on wireless connectivity for data transmission.
  • Wireless broadband: It can optimize the transmission and reception of data in wireless broadband networks, leading to improved network capacity and user experience.

Problems Solved

The technology addresses several challenges in wireless communications:

  • Subcarrier spacing and carrier frequency determination: By accurately determining these parameters, the base station can optimize the communication with the UE.
  • Sounding reference signal (SRS) configuration: Selecting the appropriate SRS configuration based on the UE's subcarrier spacing and carrier frequency ensures efficient transmission and reception.
  • Doppler frequency estimation: Measuring the SRS repetitions helps determine the Doppler frequency, which is crucial for maintaining a reliable uplink channel.
  • Demodulation reference signal (DMRS) configuration: Using the uplink Doppler frequency, the base station can select the most suitable DMRS configuration for the UE, improving demodulation accuracy.

Benefits

This technology offers several benefits for wireless communication systems:

  • Enhanced communication reliability: By optimizing the SRS and DMRS configurations based on the UE's parameters, the system can achieve more reliable and robust communication.
  • Improved network capacity: The accurate determination of subcarrier spacing and carrier frequency allows for efficient resource allocation, leading to increased network capacity.
  • Better user experience: The technology's ability to measure and utilize the Doppler frequency helps maintain a stable uplink channel, resulting in improved user experience and reduced packet loss.


Original Abstract Submitted

Methods, systems, and devices for wireless communications are described. A base station may determine the subcarrier spacing and carrier frequency used by a user equipment (UE) for communicating with the base station. The base station may select a sounding reference signal (SRS) configuration for the UE that is based on the subcarrier spacing and carrier frequency used by the UE. The SRS configuration may define the temporal spacing between repetitions of the SRS. The base station may indicate the SRS configuration to the UE so that the UE transmits repetitions of the SRS according to the SRS configuration. The base station may measure the SRS repetitions from the UE to determine the Doppler frequency for the uplink channel. The base station may use the uplink Doppler frequency to select a demodulation reference signal (DMRS) configuration for the UE.

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