The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 16, 2025
Filed:
Oct. 25, 2022
Rakuten Symphony, Inc., Tokyo, JP;
Kiran Kumar Pusarla, Bangalore, IN;
Venkatesh Muralidhara, Bangalore, IN;
Rakuten Symphony, Inc., Tokyo, JP;
Abstract
Techniques are provided for receiving PUSCH and PUCCH transmitted by a high speed transmitter. The techniques include calculating a phase difference of OFDM symbols of the PUCCH from OFDM symbols of a first DM-RS and OFDM symbols of a second DM-RS of the PUCCH, correlating the OFDM symbols of the first DM-RS and second DM-RS. Determine a doppler shift and report it to L2. Compensate channel estimates and data symbols with the doppler shift. Equalize and demodulate the PUCCH. Perform a first level of phase correction on the PUSCH by correcting the phase on output samples of an IDFT from the doppler shift received from L2. Measure a phase deviation on the output of the first level of phase correction, accumulate the measured phase deviation and the doppler shift received from L2, to derive an accumulated phase correction, and report the accumulated phase correction to L2. Demodulate the PUSCH.