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公开(公告)号：US20210067972A1
公开(公告)日：2021-03-04
申请号：US16737230
申请日：2020-01-08
发明人： Charles MCGRATH , Subrato Kumar De , Ankur Bhattacharjee , Krishna Ram Budhathoki , Mattias Kaulard Huber , Brandon Luu , Sai Eshwar Prasad Muppalla
摘要： 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.
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公开(公告)号：US11729225B2
公开(公告)日：2023-08-15
申请号：US17456527
申请日：2021-11-24
发明人： Ankur Bhattacharjee , Cherng-Shung Hsu , Subrato Kumar De , Mattias Kaulard Huber , Krishna Ram Budhathoki
IPC分类号： H04L65/1076 , H04W76/30 , H04L65/1096 , H04L65/1046 , H04L65/1016
CPC分类号： H04L65/1079 , H04L65/1016 , H04L65/1046 , H04L65/1096 , H04W76/30
摘要： Various embodiments may include methods and systems for avoiding connecting an illegitimate call within a telecommunications network. Various embodiments may include receiving, from a telecommunications network, an incoming call initiating message notifying the first wireless device of an incoming call, in which the incoming call initiating message includes caller information. Some embodiments may further include transmitting a provisional response message including callee information of the first wireless device in response to receiving the incoming call initiating message, transmitting a request message to a second wireless device based on the caller information and the callee information, determining whether the second wireless device initiated the incoming call based on a response message from the second wireless device, if received, in response to the request message, and taking an action to prevent connection of the incoming call in response to determining that the second wireless device did not initiate the incoming call.
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3.发明授权公开(公告)号：US11375368B2
公开(公告)日：2022-06-28
申请号：US16574013
申请日：2019-09-17
摘要： Methods for detecting and preventing an adversarial network entity (e.g., fake base stations, etc.) from tracking a wireless device's location. A wireless device may be equipped with a random value (RAND) database or cache memory RAND values previously received by the wireless device. In response to receiving an authentication request message from a network component, performing AKA procedures and determining that the authentication failed, the wireless device may compare the RAND value included in the received authentication request message to RAND values stored in secure storage memory. The wireless device may generate an authentication response message that includes an error code that is different than standard error code used so that the target wireless device can't be differentiated from other wireless devices thereby preventing tracking in response to determining that the RAND value included in the received authentication request message is included in the RAND secure storage memory.
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公开(公告)号：US20180027557A1
公开(公告)日：2018-01-25
申请号：US15722289
申请日：2017-10-02
CPC分类号： H04W72/0446 , H04W4/06 , H04W4/90 , H04W48/10 , H04W60/005 , H04W72/1263 , H04W76/40 , H04W76/50 , H04W88/06
摘要： Embodiments include systems and methods for managing tune-aways in a multi-subscription multi-standby communication device. A device processor may determine whether the multi-subscription multi-standby communication device is conducting an active communication session on a first network. The device processor may determine whether broadcast channel data is received over a broadcast channel of a second network in response to determining the multi-subscription device is conducting the active communication session on the first network. The device processor may calculate a periodicity of the broadcast over the broadcast channel in response to determining that the broadcast channel data is received over the broadcast channel. The device processor may schedule one or more tune-aways to the broadcast channel based on the calculated periodicity of the broadcast of the broadcast, and the device processor may perform the one or more tune-aways from the first network to the broadcast channel of the second network.
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公开(公告)号：US11218881B1
公开(公告)日：2022-01-04
申请号：US17070300
申请日：2020-10-14
发明人： Subrato Kumar De , Sivasubramanian Ramalingam , Ankur Bhattacharjee , Rahul Chandrashekar Sahukar , Muralidharan Murugan , Mattias Kaulard Huber , Krishna Ram Budhathoki , Syam Prasad Reddy Battula , Sattwik Nandi , Harshpreet Singh , Gaurav Singh , Rishika Tindola , Arvind Vardarajan Santhanam , Nitin Pant
IPC分类号： H04W12/122 , H04W36/00 , H04W36/08 , H04W12/06 , H04W12/10 , H04W12/60 , H04W12/67 , H04W12/73
摘要： In various embodiments, a wireless device processor may determine a threat score for a first cell, determine whether the first cell threat score is below a first threat score threshold, update a good neighbor cell data structure using neighbor cell information from the first cell in response to determining that the first cell threat score is below the first threat score threshold, performing cell reselection to a second cell, determine whether the second cell transmits a system information block message indicating fake neighbor cell information, and increase a threat score for the second cell in response to determining that the second cell provides the SIB message indicating fake neighbor cell information and that a good neighbor cell data structure includes an indication of one or more good neighbor cells that are within the time threshold and the location threshold and doing countermeasures in a response to the determination.
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6.发明申请BROADCAST CHANNEL RECEPTION IN MULTI-SUBSCRIPTION MULTI-STANDBY COMMUNICATION DEVICES 审中-公开多订单多通道通信设备中的广播频道接收公开(公告)号：US20170006604A1
公开(公告)日：2017-01-05
申请号：US14755149
申请日：2015-06-30
CPC分类号： H04W72/0446 , H04W4/06 , H04W4/90 , H04W48/10 , H04W60/005 , H04W72/1263 , H04W76/40 , H04W76/50 , H04W88/06
摘要： Embodiments include systems and methods for managing tune-aways in a multi-subscription multi-standby communication device. A device processor may determine whether the multi-subscription multi-standby communication device is conducting an active communication session on a first network. The device processor may determine whether broadcast channel data is received over a broadcast channel of a second network in response to determining the multi-subscription device is conducting the active communication session on the first network. The device processor may calculate a periodicity of the broadcast over the broadcast channel in response to determining that the broadcast channel data is received over the broadcast channel. The device processor may schedule one or more tune-aways to the broadcast channel based on the calculated periodicity of the broadcast of the broadcast, and the device processor may perform the one or more tune-aways from the first network to the broadcast channel of the second network.
摘要翻译： 实施例包括用于在多订购多待机通信设备中管理调谐器的系统和方法。 设备处理器可以确定多订阅多待机通信设备是否在第一网络上进行主动通信会话。 响应于确定多订阅设备正在第一网络上进行主动通信会话，设备处理器可以确定是否通过第二网络的广播信道接收广播频道数据。 响应于确定通过广播信道接收到广播信道数据，设备处理器可以计算广播信道上广播的周期。 设备处理器可以基于所计算的广播的广播的周期性来调度广播信道的一个或多个调谐，并且设备处理器可以执行从第一网络到广播的广播信道的一个或多个调谐 第二网络。
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公开(公告)号：US11638152B2
公开(公告)日：2023-04-25
申请号：US16699075
申请日：2019-11-28
发明人： Xuepan Guan , Subrato Kumar De , Nitin Pant , Mattias Kaulard Huber , Krishna Ram Budhathoki , Ankur Bhattacharjee
摘要： Various embodiments include methods, components and wireless devices configured to identify illegitimate base station. The processor of the wireless device may determine that a device in communication with the wireless device is a suspect base station. The processor may send a fabricated message to the device, and may receive one or more response messages from the device. The processor may determine whether one or more of the response messages received from the device is an appropriate response or an inappropriate response to the fabricated message. In response to determining that a response message is an inappropriate response, the processor may determine that the device is an illegitimate base station. In response to determining that the device is an illegitimate base station, the wireless device may perform a protective action.
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8.发明申请公开(公告)号：US20210084492A1
公开(公告)日：2021-03-18
申请号：US16574013
申请日：2019-09-17
摘要： Methods for detecting and preventing an adversarial network entity (e.g., fake base stations, etc.) from tracking a wireless device's location. A wireless device may be equipped with a random value (RAND) database or cache memory RAND values previously received by the wireless device. In response to receiving an authentication request message from a network component, performing AKA procedures and determining that the authentication failed, the wireless device may compare the RAND value included in the received authentication request message to RAND values stored in secure storage memory. The wireless device may generate an authentication response message that includes an error code that is different than standard error code used so that the target wireless device can't be differentiated from other wireless devices thereby preventing tracking in response to determining that the RAND value included in the received authentication request message is included in the RAND secure storage memory.
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