IP Library › Granted Patent US 12,720,372
Granted Patent B2
US 12,720,372 · App. 18/732,223 · Granted Aug 25, 2026

Method and apparatus for improving voice service quality in wireless communication system

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Quick Facts
Patent No.
US 12,720,372
App. No.
18/732,223
Granted
Aug 25, 2026
Kind
B2
Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 3, 2024
From: JEONG, SANGSOO
To: SAMSUNG ELECTRONICS CO., LTD.
Reel/Frame 067602/0415 →
Priority Claims (5)
KR 10-2019-0095220 · Aug 5, 2019 · national
KR 10-2020-0019259 · Feb 17, 2020 · national
KR 10-2020-0021847 · Feb 21, 2020 · national
KR 10-2020-0022522 · Feb 24, 2020 · national
KR 10-2020-0042447 · Apr 7, 2020 · national
Continuity (3)
Continuation 18181024 · Mar 9, 2023
Continuation 16947536 · Aug 5, 2020
Related Publication 20240323770A1 · Sep 26, 2024
References Cited (38)
US 9572194B2 · Cho et al. · 2017 [cited by applicant]
US 11019539B2 · Sayenko et al. · 2021 [cited by applicant]
US 11172528B2 · Chiba et al. · 2021 [cited by applicant]
US 20190357037A1 · Velev · 2019 [cited by examiner]
US 20190394833A1 · Talebi Fard et al. · 2019 [cited by applicant]
US 20200275335A1 · Wu et al. · 2020 [cited by applicant]
US 20200389830A1 · Park et al. · 2020 [cited by applicant]
US 20200404609A1 · Huang-Fu et al. · 2020 [cited by applicant]
US 20210092664A1 · Lai · 2021 [cited by examiner]
US 20210112462A1 · Zhu · 2021 [cited by examiner]
US 20210127442A1 · Tang · 2021 [cited by applicant]
US 20220070664A1 · Stojanovski · 2022 [cited by examiner]
US 20220095260A1 · Shan · 2022 [cited by applicant]
US 20220167446A1 · Youn et al. · 2022 [cited by applicant]
CN 107079371A · 2017 [cited by applicant]
CN 108513726A · 2018 [cited by applicant]
CN 109923897A · 2019 [cited by applicant]
CN 109937606A · 2019 [cited by applicant]
EP 3146762A1 · 2017 [cited by applicant]
WO 2012157959A2 · 2012 [cited by applicant]
WO 2019095162A1 · 2019 [cited by applicant]
WO 2019135581A1 · 2019 [cited by applicant]
Notification of Fulfilling of Registration Formality issued Jan. 3, 2025, in connection with Chinese Patent Application No. 202080055719.9, 9 pages. [cited by applicant]
Media Tek Inc., “Discuss on ATSSS and Interworking with EPS”, SA WG2 Meeting #134, Jun. 24-28, 2019, S2-1907346, 3 pages. [cited by applicant]
“5G; System architecture for the 5G System (5GS)(3GPP TS 23.501 version 15.5.0 Release 15)”, ETSI TS 123 501 V15.5.0 (Apr. 2019), 243 pages. [cited by applicant]
LG Electronics, “EPS interworking for MA PDU”, Change Request, 3GPP TSG-SA WG2 Meeting #134, Jun. 24-28, 2019, S2-1907573, 3 pages. [cited by applicant]
LG Electronics, “EPS interworking for MA PDU”, Change Request, 3GPP TSG-SA WG2 Meeting #134, Jun. 24-28, 2019, S2-1907574, 5 pages. [cited by applicant]
3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; System Architecture for the 5G System; Stage 2 (Release 16); 3GPP TS 23.501 V16.2.0 (Jul. 2019), 393 pages. [cited by applicant]
MediaTek Inc., “Discuss on ATSSS and Interworking with EPS”, SA WG2 Meeting #134, Jun. 24-28, 2019, S2-1907346, 2 pages. [cited by applicant]
OPPO et al., “Interworking for MA PDU Session”, Change Request, 3GPP TSG-SA WG2 Meeting #134, Jun. 24-28, 2019, S2-1907937, 4 pages. [cited by applicant]
European Patent Search Report dated Nov. 25, 2020 in connection with European Patent Application No. 20 18 9645, 13 pages. [cited by applicant]
International Search Report dated Oct. 27, 2020 in connection with International Patent Application No. PCT/KR2020/010338, 3 pages. [cited by applicant]
Communication pursuant to Article 94(3) EPC dated Nov. 4, 2022 in connection with European Patent Application No. 20 189 645.3, 9 pages. [cited by applicant]
Communication pursuant to Article 94(3) EPC Jun. 20, 2023, in connection with European Patent Application No. 20189645.3, 6 pages. [cited by applicant]
Office Action issued Mar. 26, 2024, in connection with Chinese Patent Application No. 202080055719.9, 16 pages. [cited by applicant]
Examination report issued Aug. 29, 2024, in connection with Indian Patent Application No. 202237005380, 6 pages. [cited by applicant]
Office Action dated Jun. 24, 2025, in connection with Korean Application No. 10-2020-0042447, 9 pages. [cited by applicant]
Notice of Hearing issued Feb. 3, 2026, in connection with Indian Patent Application No. 202237005380, 3 pages. [cited by applicant]