US 12,114,165 B2
Methods and systems for mitigating denial of service (DOS) attack in a wireless network
Narendranath Durga Tangudu, Bangalore (IN); and Rajavelsamy Rajadurai, Bangalore (IN)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jul. 17, 2023, as Appl. No. 18/353,752.
Application 18/353,752 is a continuation of application No. 17/806,654, filed on Jun. 13, 2022, granted, now 11,706,626.
Application 17/806,654 is a continuation of application No. 16/803,828, filed on Feb. 27, 2020, granted, now 11,363,463, issued on Jun. 14, 2022.
Claims priority of application No. 201941007734 (IN), filed on Feb. 27, 2019; and application No. 201941007734 (IN), filed on Feb. 25, 2020.
Prior Publication US 2023/0362653 A1, Nov. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 12/122 (2021.01); H04L 9/40 (2022.01); H04W 8/06 (2009.01); H04W 12/06 (2021.01); H04W 12/08 (2021.01); H04B 7/0413 (2017.01); H04W 84/04 (2009.01)
CPC H04W 12/122 (2021.01) [H04L 63/1458 (2013.01); H04W 8/06 (2013.01); H04W 12/068 (2021.01); H04W 12/08 (2013.01); H04B 7/0413 (2013.01); H04L 2463/141 (2013.01); H04W 84/042 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method performed by a security anchor function (SEAF), the method comprising:
receiving, from a user equipment (UE) via a base station, a registration request message including a subscription concealed identifier (SUCI) of the UE;
receiving, from the base station, a closed access group (CAG) identifier of a CAG cell via an access and mobility function (AMF);
transmitting, to a unified data management (UDM) via an authentication server function (AUSF), a request message including:
the SUCI of the UE, and
the CAG identifier of the CAG cell;
in case that the UE is not allowed to access the CAG Cell, receiving, from the UDM via the AUSF, a reject message for indicating a rejection of the CAG Cell; and
in case that the UE is allowed to access the CAG Cell, performing an authentication procedure of the UE.