US 12,192,250 B2
Electronic device for providing call function and operating method thereof
Jonghyun Park, Suwon-si (KR); Eunkyoung Lee, Suwon-si (KR); Kirak Bae, Suwon-si (KR); Seungnam Jin, Suwon-si (KR); and Yongchul Choi, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on May 4, 2022, as Appl. No. 17/736,630.
Application 17/736,630 is a continuation of application No. PCT/KR2022/004881, filed on Apr. 5, 2022.
Claims priority of application No. 10-2021-0076463 (KR), filed on Jun. 14, 2021; and application No. 10-2021-0107192 (KR), filed on Aug. 13, 2021.
Prior Publication US 2022/0407896 A1, Dec. 22, 2022
Int. Cl. H04L 65/1016 (2022.01); H04L 65/1073 (2022.01); H04W 36/00 (2009.01); H04W 76/10 (2018.01); H04W 84/12 (2009.01)
CPC H04L 65/1016 (2013.01) [H04L 65/1073 (2013.01); H04W 36/00226 (2023.05); H04W 76/10 (2018.02); H04W 84/12 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An electronic device comprising:
first communication circuitry supporting new radio (NR) communication and long term evolution (LTE) communication;
second communication circuitry supporting wireless local area network (LAN) communication; and
at least one processor operatively connected to the first communication circuitry and the second communication circuitry,
wherein the at least one processor is configured to:
register, via the first communication circuitry, the electronic device with an NR network for the NR communication,
connect, via the second communication circuitry, communication with an evolved packet data gateway (ePDG) based on a protocol data unit (PDU) session being identified as being connected over a wireless LAN network for the wireless LAN communication in a state in which the electronic device has registered with the NR network,
obtain, from the ePDG, information related to a call function of the NR network including at least one of information related to whether the NR network supports the call function or information related to whether the NR network supports handover of the PDU session to the NR network,
connect the PDU session over the wireless LAN network,
if the NR network does not support the handover of the PDU session to the NR network, release the registration with the NR network and register the electronic device with an LTE network for the LTE communication, in a state in which the connection of the PDU session over the wireless LAN network is maintained, and
if the NR network supports the handover of the PDU session to the NR network and supports the call function, maintain the registration with the NR network, in a state in which the connection of the PDU session over the wireless LAN network is maintained.