US 10,484,061 B2
Enhanced transmit point (TRP) beam grouping based on UE beams
Fredrik Athley, Kullavik (SE); Andreas Nilsson, Göteborg (SE); and Sven Petersson, Sävedalen (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 15/743,057
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
PCT Filed Dec. 4, 2017, PCT No. PCT/EP2017/081395
§ 371(c)(1), (2) Date Jan. 9, 2018,
PCT Pub. No. WO2018/127335, PCT Pub. Date Jul. 12, 2018.
Claims priority of provisional application 62/442,540, filed on Jan. 5, 2017.
Prior Publication US 2019/0081673 A1, Mar. 14, 2019
Int. Cl. H04B 7/06 (2006.01); H04B 7/08 (2006.01)
CPC H04B 7/0617 (2013.01) [H04B 7/063 (2013.01); H04B 7/0695 (2013.01); H04B 7/088 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for forming at least i) a first of group of transmit point (TRP) beams for use in communicating with a user equipment (UE), when the UE is employing a first UE beam and ii) a second group of TRP beams for use in communicating with the UE when the UE is employing a second UE beam, the method comprising:
obtaining a received signal power threshold value, T;
obtaining a first parameter indicating a received signal strength of a reference signal transmitted by a TRP over a first TRP beam and received by the UE using the first UE beam;
determining whether the first parameter is not less than T;
as a result of determining that the first parameter is not less than T, adding the first TRP beam to the first group of TRP beams;
obtaining a second parameter indicating a received signal strength of a reference signal transmitted by the TRP over the first TRP beam and received by the UE using the second UE beam;
determining whether the second parameter is not less than T; and
as a result of determining that the second parameter is not less than T, adding the first TRP beam to the second group of TRP beams such that the first TRP beam is included in both the first group of TRP beams and the second group of TRP beams.