US 12,137,385 B1
Method and apparatus for performing cell level mobility in mobile wireless communication system
Soenghun Kim, Gyeonggi-do (KR)
Filed by BLACKPIN INC., Seoul (KR); and Soenghun Kim, Gyeonggi-do (KR)
Filed on May 23, 2024, as Appl. No. 18/672,103.
Claims priority of application No. 10-2023-0076730 (KR), filed on Jun. 15, 2023.
Int. Cl. H04W 36/08 (2009.01); H04W 36/00 (2009.01); H04W 36/24 (2009.01)
CPC H04W 36/08 (2013.01) [H04W 36/0072 (2013.01); H04W 36/249 (2023.05)] 13 Claims
OG exemplary drawing
 
1. A method by a terminal, the method comprising:
receiving by the terminal a Radio Resource Control (RRC) reconfiguration message, wherein the RRC reconfiguration message comprises configuration information for cell level mobility from a first cell to a second cell;
performing by the terminal a set of operations; and
performing by the terminal data transfer in the second cell after performing a specific operation of the set of operations,
wherein, in case that the RRC reconfiguration message comprises a specific set of parameters, the set of operations comprises:
starting a timer related to cell level mobility;
resetting Medium Access Control (MAC) entity;
adjusting uplink transmission timing based on a parameter related to target timing advance;
receiving a layer 1 (L1) grant based on a first identifier;
performing uplink transmission of a specific MAC Protocol Data Unit (PDU) based on the L1 grant;
receiving downlink assignment; and
stopping the timer related to cell level mobility,
wherein the specific operation of the set of operations is the operation of stopping the timer related to cell level mobility, and
wherein the specific set of parameters comprises the parameter related to target timing advance and a parameter related to uplink transmission resource.