公开(公告)号：WO2019032236A1

公开(公告)日：2019-02-14

申请号：PCT/US2018/041815

申请日：2018-07-12

Applicant: QUALCOMM INCORPORATED

Inventor： SESHADRI, Swathi ,  TINA, Cogol ,  BHATNAGAR, Abhishek ,  AGRAWAL, Mona

IPC: H04W60/00 ,  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：WO2022261799A1

公开(公告)日：2022-12-22

申请号：PCT/CN2021/099916

申请日：2021-06-13

Applicant: QUALCOMM INCORPORATED ,  KUMAR, Sanjay ,  GUMMADI, Bapineedu Chowdary ,  ZHANG, Jianqiang ,  SESHADRI, Swathi

Inventor： KUMAR, Sanjay ,  GUMMADI, Bapineedu Chowdary ,  ZHANG, Jianqiang ,  SESHADRI, Swathi

IPC: H04W36/00 ,  H04W88/06

Abstract: Apparatus, methods, and computer-readable media for facilitating handling of voice over service fallback are disclosed herein. An example method for wireless communication at a UE includes initiating a TAU procedure when performing a change from a first cell associated with a first RAT to connect to a second cell associated with a second RAT different than the first RAT. The example method also includes initiating a timer when the TAU procedure fails, the timer associated with a first duration. The example method also includes re-initiating the TAU procedure based on an occurrence of a timer modification event, the re-initiating of the TAU procedure occurring before the first duration associated with the timer expires.