US 12,334,990 B2
Over-the-air based estimation of phase accuracy of a radio transceiver device
Lars Persson, Åsa (SE); Torbjörn Elfström, Fjärås (SE); and Christer Engdahl, Särö (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 18/023,013
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Aug. 25, 2020, PCT No. PCT/EP2020/073722
§ 371(c)(1), (2) Date Feb. 24, 2023,
PCT Pub. No. WO2022/042824, PCT Pub. Date Mar. 3, 2022.
Prior Publication US 2023/0327784 A1, Oct. 12, 2023
Int. Cl. H04B 17/12 (2015.01)
CPC H04B 17/12 (2015.01) 19 Claims
OG exemplary drawing
 
1. A method for over-the-air, OTA, based estimation of phase accuracy of a first radio transceiver device for mitigating the impact of reflections for the first radio transceiver device in its specific environment, the method being performed by a controller, the method comprising:
obtaining, per each position in a sequence of positions of a second radio transceiver device relative the first radio transceiver device, a phase relation estimate between transceiver branches of the first radio transceiver device, wherein each phase relation estimate is obtained from measurements on a signal wirelessly transmitted between the first radio transceiver device and the second radio transceiver device; and
estimating an average phase relation for at least one pair of the transceiver branches of the first radio transceiver device by averaging the obtained phase relation estimates over all the positions in the sequence of positions, wherein the phase accuracy of the first radio transceiver device is represented by the average phase relation for the at least one pair of the transceiver branches.