公开(公告)号：US20210067972A1

公开(公告)日：2021-03-04

申请号：US16737230

申请日：2020-01-08

Applicant: QUALCOMM Incorporated

Inventor： Charles MCGRATH ,  Subrato Kumar De ,  Ankur Bhattacharjee ,  Krishna Ram Budhathoki ,  Mattias Kaulard Huber ,  Brandon Luu ,  Sai Eshwar Prasad Muppalla

IPC: H04W12/12 ,  H04W4/90 ,  H04W4/06 ,  H04W12/06 ,  H04W4/12

Abstract: Methods for detecting and responding to unauthorized alert messages. In an example embodiment, a wireless device may detect a first system information block (SIB1) broadcast from a base station that includes an alert message flag that indicates that an emergency alert message is scheduled for broadcast in another system information block (e.g., in one of SIBs 10-14, etc.). The wireless device may detect an unauthorized alert based on inconsistent inputs from various base stations, and the server may detect fake or unauthorized base stations or detect unauthorized alerts based on inconsistent inputs from various UEs about same Cell ID, or same PLMN and geolocation, etc.

公开(公告)号：US20190132740A1

公开(公告)日：2019-05-02

申请号：US16004300

申请日：2018-06-08

Applicant: QUALCOMM Incorporated

Inventor： Subrato Kumar DE ,  Mattias Kaulard HUBER ,  Charles MCGRATH ,  Pankaj GARG ,  Zaheer AHMAD

IPC: H04W12/12 ,  H04L29/06 ,  H04W12/08 ,  H04W12/06

Abstract: In an aspect, a client device in a first network cell may obtain information that indicates a second network cell neighboring the first network cell, wherein the tracking area code (also referred to as location area code) of the second network cell is different from the tracking area code of the first network cell and is not included in the tracking area identifier list of the of the first network cell. The client device may use the obtained information to detect a nearby false network access node that may be imitating the second network access node to lure the client device to connect to the false network access node. In some aspects, a client device in a first geographical location may preemptively obtain a network access node list associated with a second geographical location in order to detect false network access nodes in the second geographical location.