US 12,355,499 B2
UE selection for UE aided antenna calibration
Shaohua Li, Kanata (CA); and Jianguo Long, Ottawa (CA)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 18/022,768
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Aug. 24, 2020, PCT No. PCT/IB2020/057912
§ 371(c)(1), (2) Date Feb. 23, 2023,
PCT Pub. No. WO2022/043730, PCT Pub. Date Mar. 3, 2022.
Prior Publication US 2023/0327783 A1, Oct. 12, 2023
Int. Cl. H04B 17/12 (2015.01)
CPC H04B 17/12 (2015.01) 21 Claims
OG exemplary drawing
 
1. A method implemented in a base station for a cellular communications system, the method comprising:
selecting, from a plurality of User Equipments, UEs, one or more assistant UEs to assist the base station with antenna calibration, wherein selecting the one or more assistant UEs is based upon criteria that includes one or more of: (a) UE channel state information, CSI, from the UEs; (b) one or more uplink channel characteristics of an uplink channel from the UEs to the base station; (c) a UE capability of the UEs, (d) UE traffic information related to the UEs; and
obtaining antenna calibration assistance information from the one or more assistant UEs, the antenna calibration assistance information being information that is used by the base station for antenna calibration;
wherein selecting from the plurality of UEs, one or more assistant UEs to assist the base station with antenna calibration comprises:
selecting a potential candidate UE from the plurality of UEs;
retrieving from the potential candidate UE, UE properties that include one or more of UE CSI feedback, uplink channel characteristic, UE capability, and UE traffic; and
determining if the UE properties satisfy a predefined criteria;
setting the potential candidate UE as a candidate UE to assist in base station antenna calibration;
determining if a desired number of candidate UEs has been collected; and
selecting one or more highest qualified candidate UEs as the one or more assistant UEs if the desired number of candidate UEs has been collected.