US 12,108,356 B2
Wireless device, network node and methods performed therein for time of arrival estimation
Per Ernström, Stockholm (SE); Erik Stare, Sollentuna (SE); Fredrik Gunnarsson, Linköping (SE); Florent Munier, Västra Frölunda (SE); Johannes Nygren, Uppsala (SE); Satyam Dwivedi, Solna (SE); Iana Siomina, Täby (SE); and Deep Shrestha, Linköping (SE)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/421,452
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Jan. 12, 2020, PCT No. PCT/SE2020/050018
§ 371(c)(1), (2) Date Jul. 8, 2021,
PCT Pub. No. WO2020/145877, PCT Pub. Date Jul. 16, 2020.
Claims priority of provisional application 62/791,630, filed on Jan. 11, 2019.
Prior Publication US 2022/0086787 A1, Mar. 17, 2022
Int. Cl. H04L 25/02 (2006.01); H04L 5/00 (2006.01); H04W 56/00 (2009.01); H04W 64/00 (2009.01)
CPC H04W 56/0055 (2013.01) [H04L 5/0048 (2013.01); H04L 25/0212 (2013.01); H04L 25/0224 (2013.01); H04W 64/006 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method implemented in a network node configured to communicate with a wireless device, WD, the method comprising:
configuring an extended signal that includes a base signal and at least one additional signal, the extended signal being used for estimation of time of arrival, TOA, at the wireless device, the estimation of the TOA further including at least one of:
correlating the received extended signal with a known combined signal and identify the delay of the earliest non-aliased peak in the correlation to determine the estimated TOA; and
dividing the received extended signal by the known combined signal;
performing an inverse Discrete Fourier Transform (DFT) on the result of the division to determine a channel impulse response; and
identifying a delay of an earliest non-aliased peak in the channel impulse response to determine the estimated TOA; and
transmitting the extended signal to the WD.