US 12,267,796 B2
Rx-tx time difference generation, measurement and reporting with neighboring base stations
Satyam Dwivedi, Solna (SE); Fredrik Gunnarsson, Linköping (SE); Erik Dahlman, Stockholm (SE); and Erik Stare, Sollentuna (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/768,167
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
PCT Filed Oct. 10, 2020, PCT No. PCT/IB2020/059533
§ 371(c)(1), (2) Date Apr. 11, 2022,
PCT Pub. No. WO2021/070148, PCT Pub. Date Apr. 15, 2021.
Claims priority of provisional application 62/913,613, filed on Oct. 10, 2019.
Prior Publication US 2024/0107474 A1, Mar. 28, 2024
Int. Cl. H04W 56/00 (2009.01)
CPC H04W 56/002 (2013.01) [H04W 56/0055 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method performed by a first base station in a radio access network of a cellular communications system, the method comprising:
receiving, at the first base station, a signal transmitted by a second base station;
estimating a Time of Arrival (TOA) of the received signal at the first base station according to a clock of the first base station;
determining a delta value that is a function of an amount of time between the TOA of the received signal at the first base station according to the clock of the first base station and a time reference at the first base station; and
either:
(a) providing the delta value to a positioning estimation entity within the cellular communications system; or
(b) using the delta value at the first base station to reduce a time synchronization error between the first base station and the second base station; or
(c) passing the delta value to a User Equipment (UE).