US 12,413,358 B2
Determining reference signal transmission times
Manikanta Kotaru, Kenmore, WA (US); Yu Yan, Kirkland, WA (US); Paramvir Bahl, Bellevue, WA (US); and Neil Agarwal, San Jose, CA (US)
Assigned to Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed by Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed on May 26, 2022, as Appl. No. 17/825,766.
Prior Publication US 2023/0412335 A1, Dec. 21, 2023
Int. Cl. H04L 5/00 (2006.01); H04B 7/06 (2006.01); H04W 24/02 (2009.01); H04W 72/1263 (2023.01)
CPC H04L 5/0048 (2013.01) [H04B 7/0617 (2013.01); H04B 7/0626 (2013.01); H04W 24/02 (2013.01); H04W 72/1263 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of determining reference symbol transmission times for cellular communications, the method comprising:
receiving signal feedback for a wireless communication channel between a wireless communication device and a base station;
identifying a periodic exchange of reference symbols that are used to adjust beamforming between the wireless communication device and the base station;
generating a vector based on the signal feedback;
providing the vector as an input to a trained machine learning model, wherein a training of the trained machine learning model comprises:
receiving a plurality of signal feedbacks for the wireless communication channel, each signal feedback corresponding to a respective frame of time, and each signal feedback of the plurality of signal feedbacks including a respective downlink throughput and uplink overhead;
selecting a plurality of transmission time delays for reference symbols, each transmission time delay of the plurality of transmission time delays being selected based on a respective signal feedback of the plurality of signal feedbacks; and
calculating a plurality of rewards, each reward of the plurality of rewards being calculated for a respective transmission time delay of the plurality of transmission time delays, the plurality of rewards each being calculated based on a change in downlink throughput between consecutive signal feedbacks of the plurality of signal feedbacks and a change in uplink overhead between consecutive signal feedbacks of the plurality of signal feedbacks, and at least one of the change in downlink throughput and the change in uplink overhead being weighted based upon a priority level of the wireless communication device;
selecting a transmission time delay from the plurality of transmission time delays for a reference symbol to be transmitted to the wireless communication device, the selected transmission time delay having the greatest reward of the plurality of calculated rewards; and
transmitting the reference symbol, after the transmission time delay, to disrupt the periodic exchange of reference symbols.