US 12,349,204 B2
Device and method for controlling access to cell
Hyun Yong Lee, Seoul (KR)
Assigned to SK TELECOM CO., LTD., Seoul (KR)
Appl. No. 17/430,366
Filed by SK TELECOM CO., LTD., Seoul (KR)
PCT Filed Mar. 3, 2020, PCT No. PCT/KR2020/003001
§ 371(c)(1), (2) Date Aug. 12, 2021,
PCT Pub. No. WO2020/218732, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 10-2019-0048686 (KR), filed on Apr. 25, 2019.
Prior Publication US 2022/0132592 A1, Apr. 28, 2022
Int. Cl. H04W 74/0833 (2024.01); H04W 36/08 (2009.01); H04W 36/30 (2009.01); H04W 72/044 (2023.01); H04W 72/0446 (2023.01); H04W 72/542 (2023.01); H04W 74/08 (2009.01)
CPC H04W 74/0841 (2013.01) [H04W 36/087 (2023.05); H04W 36/302 (2023.05); H04W 72/0446 (2013.01); H04W 72/046 (2013.01); H04W 72/542 (2023.01); H04W 74/0866 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A device for controlling access to cells, the device comprising:
a non-transitory memory that stores instructions; and
a processor that executes the instructions to:
identify a second cell to which a user equipment (UE), which is accessing a first cell, is to access on a basis of a measurement report received from the UE;
determine a transmission time for a specific message to induce an attempt by the UE to access the second cell; and
when the specific message is generated, hold off transmitting the specific message to the UE, and transmit the specific message to the UE at the determined transmission time,
wherein the measurement report comprises information on a specific beam having a best signal quality measured by the UE among a plurality of beams formed in different directions in the second cell, and
wherein the processor is configured to determine the transmission time on a basis of physical random access channel (PRACH) configuration information identified for the second cell and information on the specific beam,
wherein the processor, when determining the transmission time, is configured to:
predict a specific time that the UE attempts to access the second cell through the specific beam on a basis of the PRACH configuration information and the information on the specific beam; and
determine the transmission time on a basis of the predicted specific time, and
wherein the predicted specific time is a PRACH slot position to which a resource allocated to the specific beam identified from the PRACH configuration information and RACH occasion (RO) allocated to the UE are mapped.