US 12,439,312 B2
Conditional handover with beamforming and son information
Krzysztof Kordybach, Wrocław (PL); Ingo Viering, Munich (DE); and Ahmad Awada, Munich (DE)
Assigned to NOKIA SOLUTIONS AND NETWORKS OY, Espoo (FI)
Appl. No. 17/997,073
Filed by Nokia Solutions and Networks Oy, Espoo (FI)
PCT Filed Apr. 30, 2020, PCT No. PCT/EP2020/062031
§ 371(c)(1), (2) Date Oct. 25, 2022,
PCT Pub. No. WO2021/219223, PCT Pub. Date Nov. 4, 2021.
Prior Publication US 2023/0189090 A1, Jun. 15, 2023
Int. Cl. H04W 36/08 (2009.01); H04W 36/00 (2009.01); H04B 7/06 (2006.01); H04W 36/36 (2009.01); H04W 74/0833 (2024.01); H04W 74/0838 (2024.01)
CPC H04W 36/085 (2023.05) [H04W 36/0072 (2013.01); H04W 36/0077 (2013.01); H04B 7/06952 (2023.05); H04W 36/00833 (2023.05); H04W 36/362 (2023.05); H04W 74/0833 (2013.01); H04W 74/0838 (2024.01)] 8 Claims
OG exemplary drawing
 
1. An apparatus comprising at least one processor, and at least one memory storing instructions, the at least one memory and the instructions configured to, with the at least one processor, cause a source node at least to:
receive a target node beam information (TN-BI) from a target node, wherein the TN-BI indicates at least one beam of the target node used by a user equipment (11) for a handover from the source node to the target node,
transmit a source node beam information (SN-BI) to the target node, wherein the SN-BI indicates a last beam of the source node used by the user equipment for the handover;
send and/or configure the user equipment with at least one contention-free random access channel preamble based on the SN-BI and the TN-BI.