US 11,838,861 B2
Handling UE context upon inactivity
Samuli Turtinen, Ii (FI); Juho Pirskanen, Kangasala (FI); and Timo Koskela, Oulu (FI)
Assigned to Nokia Technologies Oy, Espoo (FI)
Appl. No. 16/349,041
Filed by Nokia Technologies Oy, Espoo (FI)
PCT Filed Nov. 10, 2017, PCT No. PCT/IB2017/057054
§ 371(c)(1), (2) Date May 10, 2019,
PCT Pub. No. WO2018/092010, PCT Pub. Date May 24, 2018.
Claims priority of provisional application 62/422,411, filed on Nov. 15, 2016.
Prior Publication US 2020/0196234 A1, Jun. 18, 2020
Int. Cl. H04W 52/02 (2009.01); H04W 76/19 (2018.01); H04W 76/27 (2018.01); H04W 24/08 (2009.01); H04W 68/00 (2009.01)
CPC H04W 52/0216 (2013.01) [H04W 24/08 (2013.01); H04W 52/0274 (2013.01); H04W 68/005 (2013.01); H04W 76/19 (2018.02); H04W 76/27 (2018.02)] 19 Claims
OG exemplary drawing
 
1. An apparatus comprising:
at least one processor; and
at least one memory tangibly storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform:
receiving at a user equipment, UE, from a first network node on a first frequency layer a configuration comprising a timer and information about a second frequency layer controlled by a second network node, wherein the timer is to be used to determine when to re-select by the UE to the second frequency layer, and wherein the UE uses UE context for communication with the first network node;
initiating the timer upon the UE entering an inactive state;
prior to expiry of the timer, monitoring paging occasions on the first frequency layer; and
upon expiry of the timer, keeping the UE context for use on the second frequency layer and re-selecting by the UE to the second frequency layer at least by autonomously monitoring paging occasions on the second frequency layer in the inactive state.