公开(公告)号：US10477400B2

公开(公告)日：2019-11-12

申请号：US16031803

申请日：2018-07-10

Applicant: QUALCOMM Incorporated

Inventor： Swathi Seshadri ,  Cogol Tina ,  Abhishek Bhatnagar ,  Mona Agrawal

IPC: H04M1/66 ,  H04W12/08 ,  H04L29/06 ,  H04W48/16 ,  H04W60/00 ,  H04W12/12 ,  H04W12/00 ,  H04W4/021 ,  H04W48/04 ,  H04W48/02 ,  H04W8/18 ,  H04W48/18 ,  H04W12/06 ,  H04W8/06

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may be configured to include procedures to mitigate denial of service (DoS) attack by a rogue base station when the initial non-access stratum (NAS) messages between the UE and a mobility management entity (MME) is unprotected. UE may maintain a temporary forbidden network list, which resides outside a subscriber identity module (SIM), and update a forbidden network list, which resides on the SIM, only under certain conditions. For example, a visited network, from which the UE receives a reject message, may be added to the forbidden network list on the SIM only when a counter associated with the visited network is equal to a maximum counter value, which is configured by the UE.

公开(公告)号：US12081982B2

公开(公告)日：2024-09-03

申请号：US17468331

申请日：2021-09-07

Applicant: QUALCOMM Incorporated

Inventor： Xuepan Guan ,  Osama Lotfallah ,  Vitaly Drapkin ,  Cogol Tina ,  Swathi Seshadri

IPC: H04W12/08 ,  H04L9/40 ,  H04W76/10

CPC classification number: H04W12/08 ,  H04L63/105 ,  H04W76/10

Abstract: Techniques and apparatus for optimizing an initial access stratum security mode command procedure are described. One example technique includes sending a first service request to establish a connection with a network. A second service request is sent to the network, upon determining that one or more criteria is satisfied. Another example technique includes sending a first service request to establish a connection with a network and sending a second service request after sending the first service request. The first service request is associated with a first security parameter and the second service request is associated with a second security parameter. A security mode command procedure is participated in with a base station, based on the first security parameter and the second security parameter.

公开(公告)号：US10791463B2

公开(公告)日：2020-09-29

申请号：US16679707

申请日：2019-11-11

Applicant: QUALCOMM Incorporated

Inventor： Swathi Seshadri ,  Cogol Tina ,  Abhishek Bhatnagar ,  Mona Agrawal

IPC: H04M3/16 ,  H04W12/08 ,  H04W60/00 ,  H04W12/12 ,  H04W4/021 ,  H04W12/00 ,  H04L29/06 ,  H04W48/16 ,  H04W48/04 ,  H04W48/02 ,  H04W8/18 ,  H04W48/18 ,  H04W8/06 ,  H04W12/06

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may be configured to include procedures to mitigate denial of service (DoS) attack by a rogue base station when the initial non-access stratum (NAS) messages between the UE and a mobility management entity (MME) is unprotected. UE may maintain a temporary forbidden network list, which resides outside a subscriber identity module (SIM), and update a forbidden network list, which resides on the SIM, only under certain conditions. For example, a visited network, from which the UE receives a reject message, may be added to the forbidden network list on the SIM only when a counter associated with the visited network is equal to a maximum counter value, which is configured by the UE.