公开(公告)号：AU2018316148A1

公开(公告)日：2020-01-30

申请号：AU2018316148

申请日：2018-07-12

Applicant: QUALCOMM INC

Inventor： SESHADRI SWATHI ,  TINA COGOL ,  BHATNAGAR ABHISHEK ,  AGRAWAL MONA

IPC: H04W60/00 ,  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.

公开(公告)号：SG11202102229RA

公开(公告)日：2021-04-29

申请号：SG11202102229R

申请日：2019-10-08

Applicant: QUALCOMM INC

Inventor： SHI YONGSHENG ,  ZHU XIPENG ,  ZISIMOPOULOS HARIS ,  ANCHAN KIRANKUMAR BHOJA ,  CHAPONNIERE LENAIG GENEVIEVE ,  WANG SHANSHAN ,  SANTHANAM ARVIND VARDARAJAN ,  AGRAWAL MONA ,  GHOLMIEH AZIZ ,  CHIN TOM

IPC: H04W36/36 ,  H04W36/00

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for improving voice over new radio (VoNR)-to-voice over long term evolution (VoLTE). An example method generally includes communicating with and camping on a next generation node B (gNB) in a 5G new radio (NR) system; initiating a voice call with the gNB; receiving a 5G NR-to-long term evolution (LTE) handover command in response to initiating the voice call; performing a handover procedure in response to the handover command; detecting a failure in the handover procedure; and taking one or more actions in response to detecting the failure in the handover procedure.