US 12,069,502 B2
Method and apparatus for updating list of cells to be measured in reselection of cell in idle mode in next-generation wireless communication system
Seungri Jin, Suwon-si (KR); Soenghun Kim, Suwon-si (KR); Sangbum Kim, Suwon-si (KR); and Himke Van Der Velde, Middlesex (GB)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jan. 14, 2022, as Appl. No. 17/576,337.
Application 17/576,337 is a continuation of application No. 16/785,415, filed on Feb. 7, 2020, granted, now 11,228,934.
Claims priority of application No. 10-2019-0015128 (KR), filed on Feb. 8, 2019.
Prior Publication US 2022/0141697 A1, May 5, 2022
Int. Cl. H04W 24/10 (2009.01); H04B 17/318 (2015.01); H04L 1/00 (2006.01); H04L 5/00 (2006.01); H04W 8/24 (2009.01); H04W 76/27 (2018.01)
CPC H04W 24/10 (2013.01) [H04B 17/318 (2015.01); H04L 1/0026 (2013.01); H04L 5/0094 (2013.01); H04W 8/24 (2013.01); H04W 76/27 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A method performed by a terminal in a communication system, the method comprising:
receiving, from a_base station, a radio resource control (RRC) release message including duration information for a measurement in an RRC idle state and validity area information, wherein the validity area information indicates a list of frequencies;
as a response to reception of the RRC release message, entering the RRC idle state and starting a timer with a value set to the duration information;
performing the measurement in the RRC idle state based on carrier list information while the timer is running, wherein the carrier list information is stored in the terminal based on the RRC release message; and
stopping the timer:
in case that a cell reselection is performed while the timer is running and a frequency associated with a reselected cell does not match the frequency indicated by the validity area information, or
in case that the cell reselection is performed while the timer is running, the frequency associated with the reselected cell matches the frequency indicated by the validity area information, and a physical cell identity of the reselected cell does not match one or more physical cell identities of a one or more validity cells.