US 12,219,642 B2
Methods for handling context information for mobile-terminated early data transmission
Dung Pham Van, Taby (SE); Paul Schliwa-Bertling, Ljungsbro (SE); and Magnus Stattin, Upplands Vasby (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/431,293
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
PCT Filed Feb. 13, 2020, PCT No. PCT/IB2020/051216
§ 371(c)(1), (2) Date Aug. 16, 2021,
PCT Pub. No. WO2020/165843, PCT Pub. Date Aug. 20, 2020.
Claims priority of provisional application 62/805,430, filed on Feb. 14, 2019.
Prior Publication US 2022/0132616 A1, Apr. 28, 2022
Int. Cl. H04W 76/19 (2018.01); H04W 68/00 (2009.01); H04W 74/0833 (2024.01)
CPC H04W 76/19 (2018.02) [H04W 68/005 (2013.01); H04W 74/0833 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method in a first network node for performing secure Mobile Terminated (MT) early data transmission (EDT), the method comprising:
sending a paging message to a wireless device, which has been suspended from a connection with a second network node, the paging message comprising an early data transmission (EDT) indication;
receiving a random access preamble from the wireless device;
obtaining, from the second network node, context information of the wireless device, wherein obtaining the context information comprises receiving, from a third network node, an identifier related to the wireless device, and wherein the identifier is received by fetching the identifier from a container uploaded to the first network node by the second network node; and
resuming a data connection with the wireless device based on the context information.