US 12,244,439 B2
Access node, user equipment, and corresponding apparatuses, methods and computer programs
Andreas Pfadler, Berlin (DE); Slawomir Stanczek, Berlin (DE); and Peter Jung, Berlin (DE)
Assigned to FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V., (DE)
Appl. No. 17/756,260
Filed by FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN E.V., Munich (DE)
PCT Filed Nov. 18, 2020, PCT No. PCT/EP2020/082491
§ 371(c)(1), (2) Date May 20, 2022,
PCT Pub. No. WO2021/099362, PCT Pub. Date May 27, 2021.
Claims priority of application No. 19210374 (EP), filed on Nov. 20, 2019.
Prior Publication US 2022/0417062 A1, Dec. 29, 2022
Int. Cl. H04L 25/02 (2006.01); H04L 5/00 (2006.01); H04L 27/26 (2006.01)
CPC H04L 25/0224 (2013.01) [H04L 5/0023 (2013.01); H04L 5/0051 (2013.01); H04L 27/2639 (2013.01); H04L 27/26532 (2021.01)] 17 Claims
OG exemplary drawing
 
1. An apparatus for a wireless transmitter device, the apparatus comprising:
a transmitter module configured to transmit wireless transmissions; and
a processing module configured to control the transmitter module,
wherein, the processing module is further configured to, prior to transmission of a wireless transmission:
generate one or more transmit symbols in a Delay-Doppler domain to obtain a Delay-Doppler representation,
transform the obtained Delay-Doppler representation into a Time-Frequency domain to obtain a Time-Frequency representation of the generated one or more transmit symbols, the Time-Frequency representation having a first frequency bandwidth and a first time duration,
spread the Time-Frequency representation having the first frequency bandwidth, the first duration in time, or both, to generate resources in the Time-Frequency representation for insertion of pilot symbols,
add pilot symbols to the spread Time-Frequency representation to obtain a Time-Frequency representation with a second frequency bandwidth or a second time duration, wherein the second frequency bandwidth and the second time duration are extended relative to the first frequency bandwidth and first time duration, respectively;
transform the Time-Frequency representation with the extended second frequency bandwidth or the extended time second duration to the time domain to obtain a time domain representation with the extended second frequency bandwidth or extended second time duration; and
transmit the time domain representation with the extended second frequency bandwidth or extended time second duration to a wireless receiver device for subsequent processing to obtain the Time-Frequency representation with the first frequency bandwidth and first time duration.