US 12,192,860 B2
Short message service (SMS) delivery
David Castellanos Zamora, Madrid (ES); George Foti, Dollard des Ormeaux (CA); Jose Miguel Dopico Sanjuan, Torrelodones (ES); Ralf Keller, Würselen (DE); and Jesús Angel De Gregorio Rodriguez, Madrid (ES)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/762,508
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Sep. 21, 2020, PCT No. PCT/IB2020/058796
§ 371(c)(1), (2) Date Mar. 22, 2022,
PCT Pub. No. WO2021/064507, PCT Pub. Date Apr. 8, 2021.
Claims priority of provisional application 62/908,886, filed on Oct. 1, 2019.
Prior Publication US 2022/0360954 A1, Nov. 10, 2022
Int. Cl. H04W 4/14 (2009.01); H04W 8/18 (2009.01); H04W 60/00 (2009.01); H04W 68/00 (2009.01)
CPC H04W 4/14 (2013.01) [H04W 8/18 (2013.01); H04W 60/00 (2013.01); H04W 68/005 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A method implemented in a unified data management, UDM, node, the method comprising:
as a result of receiving, from a short message service center, SMSC, node, a request for routing information for a user equipment, UE, determining that the UE is at least one of not registered in a network associated with the UDM node and not registered for a short message service, SMS, in the network;
as a result of the determination that the UE is at least one of not registered in the network associated with the UDM node and not registered for the SMS in the network, setting an indication supporting mobile terminated short message service, MT-SMS, delivery reattempt and indicating to the SMSC node that the UE is absent; and
as a result of an SMS function, SMSF, registering at the UDM node for the UE and the SMSF registration notification flag being set for the UE, sending an alert to the SMSC node to retry an SMS delivery to the UE.