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公开(公告)号：US09167456B2
公开(公告)日：2015-10-20
申请号：US14079140
申请日：2013-11-13
Applicant: EXFO Oy
Inventor： Jukka Kemppainen , Juha Lehtikangas
CPC classification number: H04W24/06 , H04L63/302 , H04W12/02 , H04W12/08
Abstract: Subscriber terminal identification is disclosed. An apparatus controls a base station to form an emulated long term evolution LTE cell such that tracking area code and physical cell identity of the emulated LTE cell are unused by real neighboring LTE cells, and radio frequency power level of the emulated LTE cell within the emulated LTE cell is higher than the radio frequency power levels of the real neighboring LTE cells within the emulated LTE cell; and controls the base station to receive a connection request from a subscriber terminal residing in the emulated LTE cell, whereupon, in the ensuing exchange of messages, the base station is controlled to receive an international mobile subscriber identity from the subscriber terminal.
Abstract translation: 公开了用户终端识别。 一种装置控制基站以形成模拟的长期演进LTE小区，使得仿真LTE小区的跟踪区域代码和物理小区标识被实际的相邻LTE小区所使用，并且模拟的LTE小区中的模拟LTE小区的射频功率电平 LTE小区高于模拟LTE小区内的真实相邻LTE小区的射频功率电平; 并且控制基站从驻留在仿真LTE小区中的用户终端接收连接请求，于是在随后的消息交换中，基站被控制以从用户终端接收国际移动用户身份。
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公开(公告)号：US20140161120A1
公开(公告)日：2014-06-12
申请号：US14101860
申请日：2013-12-10
Applicant: EXFO Oy
Inventor： Jorma Ikäheimo
IPC: H04L12/14
CPC classification number: H04L43/028 , H04L12/1482 , H04L43/18 , H04M15/41 , H04M15/8214 , H04M15/8228
Abstract: Processing of call data records is disclosed. Data packets captured from a monitored telecommunications network are obtained, decoded, and sessions are identified. The decoded data packets and the identified sessions are filtered with a dynamic filter determining adjustable conditions for the protocol attributes and the session attributes such that the decoded data packets and the identified sessions fulfilling the adjustable conditions are kept in order to get attribute-filtered decoded data packets and attribute-filtered identified sessions. Dynamic call data records are generated such that their structure and contents are determined dynamically on the basis of the attribute-filtered decoded data packets and the attribute-filtered identified sessions. The dynamic call data records are stored.
Abstract translation: 公开了呼叫数据记录的处理。 从受监控的电信网络获取的数据包被获取，解码，并且会话被识别。 解码的数据分组和所识别的会话用动态过滤器过滤，该动态过滤器确定协议属性和会话属性的可调条件，使得保存解码的数据分组和满足可调整条件的识别的会话，以便获得属性过滤的解码数据 数据包和属性过滤的已识别会话。 生成动态呼叫数据记录，使得它们的结构和内容基于属性过滤的解码的数据分组和经过属性过滤的已识别的会话动态地确定。 存储动态呼叫数据记录。
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公开(公告)号：US20230300779A1
公开(公告)日：2023-09-21
申请号：US18184240
申请日：2023-03-15
Applicant: EXFO OY
Inventor： Juha Olavi LEHTIKANGAS , Tuure Risto MAKELA , Antti Mauno Ilmari JAASKI , Taisto Antero NIIRANEN
Abstract: An ad hoc radio base station and a method for locating a user apparatus are presented. The method comprises setting up two ad hoc cells, a first cell of the two ad hoc cells providing an omnidirectional cell and a second cell of the ad hoc cells providing a directional cell, utilizing a set of directional or beamforming antennas, the main lobes of the antennas of the cells being directed at different directions from each other, one antenna of the second cell being active at a time; setting up a radio connection in one of the two ad hoc cells to an user apparatus; obtaining information on the signal-to-noise ratio measured by the user apparatus from of the signal received by the user apparatus and Timing Advance required on the radio connection; transmitting a redirection message to other cell in the first radio connection to the user apparatus.
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公开(公告)号：US20200228989A1
公开(公告)日：2020-07-16
申请号：US16832422
申请日：2020-03-27
Applicant: EXFO Oy
Inventor： Jukka KEMPPAINEN
Abstract: A method and fake base station for detecting subscriber identity are disclosed. Method includes The method includes: capturing at least one wireless message containing an encrypted subscriber identity of a fifth generation mobile phone system transmitted from a mobile subscriber apparatus; transmitting a reject message of the fifth generation mobile phone system for the mobile subscriber apparatus; capturing at least one wireless message of the fourth generation mobile phone system transmitted from the mobile subscriber apparatus; detecting an unencrypted subscriber identity from the at least one captured wireless message of the fourth generation mobile phone system; and transmitting a disconnect message of the fourth generation mobile phone system for the mobile subscriber apparatus.
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公开(公告)号：US20240389057A1
公开(公告)日：2024-11-21
申请号：US18660515
申请日：2024-05-10
Applicant: EXFO OY
Inventor： Antti Mauno Ilmari JÄÄSKI , Tuure Risto MÄKELÄ
Abstract: A solution for estimating the geographical location of a target device is presented. The solution comprises obtaining measurement data from individual locations, the measurement data comprising a distance estimate to the target device from an apparatus and the individual locations; adding measurement data to a measurement data queue; determining intersection points of circles having radiuses of measured distances and locations of the corresponding individual location as center points, when a given number of measurement data is present in the queue; determining intersection points closest to each other and determining estimated location of the target device as center point of a vector connecting the intersection points closest to each other.
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Patent Agency Ranking
公开(公告)号：US20230396985A1
公开(公告)日：2023-12-07
申请号：US17944266
申请日：2022-09-14
Applicant: EXFO OY
Inventor： Anwer AL-DULAIMI , Stéphane Michel BOULET , Jad ALOUANI , Manuel CISSÉ , Choua YANG , Guillaume ERNOT
Abstract: Systems and methods for detecting a subscriber permanent identifier (SUPI) from a subscriber concealed identifier (SUCI) include steps of receiving the SUCI that is a representative of user equipment (UE) of interest and that is encrypted; checking association data with the received SUCI to determine a corresponding SUPI, wherein the association data includes a mapping of a plurality of SUCIs to a plurality of SUPIs and is maintained over time based on monitoring messages in a 5G core network; and providing the corresponding SUPI. The steps can further include updating the association data based on monitoring exchanges on both sides of an access and mobility management function (AMF) associated with the 5G core network.
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公开(公告)号：US20230300896A1
公开(公告)日：2023-09-21
申请号：US18115036
申请日：2023-02-28
Applicant: EXFO OY
Inventor： Jukka KEMPPAINEN , Juha Olavi LEHTIKANGAS
CPC classification number: H04W74/0833 , H04W76/10 , H04W76/20
Abstract: Base stations, system, methods, and computer programs are disclosed to implement two successive or simultaneous ad hoc (Long-Term Evolution) LTE cells. The successive LTE cells are set up successively on a same channel number but with different Physical Cell IDs (PCID) and Tracking Area Codes (TAC). The simultaneous LTE cells are set up simultaneously on different channel numbers, and with different PCIDs and TACs. A radio connection is set up in the ad hoc LTE cell to an LTE user apparatus, and a Non-Access Stratum (NAS) timer is set simultaneously. The following is repeated until a predetermined period of time remains before an expiry of the NAS timer: commanding the LTE user apparatus to use full buffer in all uplink messages; forcing the LTE user apparatus to send uplink messages; and receiving a reply message from the LTE user apparatus.
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公开(公告)号：US11501398B2
公开(公告)日：2022-11-15
申请号：US16799257
申请日：2020-02-24
Applicant: EXFO Oy
Inventor： Janne Pauna
Abstract: A method and system for intercepting mobile apparatus of cellular radio system are disclosed. The method can include implementing, with an interrogation apparatus, a silent call with a mobile apparatus in a radio cell; implementing, with a mobile platform, at least three transmit radio beams each with a distinct transmission direction in relation to the mobile platform; receiving a measurement report from the mobile apparatus including received downlink power levels of the radio cell and at least one of the three transmit radio beams; receiving a geographical location of the mobile platform; obtaining a geographical orientation of the mobile platform; and calculating a geographical location of the mobile apparatus based on the received downlink power levels, the geographical location of the mobile platform, the distinct transmission directions, and the geographical orientation of the mobile platform.
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公开(公告)号：US11088759B2
公开(公告)日：2021-08-10
申请号：US16880185
申请日：2020-05-21
Applicant: EXFO Oy
Inventor： Vesa Kyllönen , Sakari Yrttiaho , Daniel Gariepy , Gang He
Abstract: There is provided a system and a method for extracting data traffic from an optical communication fiber by extracting a portion of the optical signal(s) propagating in the optical communication fiber, carrying the extracted signal over an optical fiber, amplifying the extracted optical signal and filtering the amplified signal to select one channel carrying data traffic. The optically-carried data traffic may then be input to an optical communication transceiver for converting the optically-carried data traffic into electrical data traffic, which carried data can be analyzed for data traffic monitoring applications.
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公开(公告)号：US20200374008A1
公开(公告)日：2020-11-26
申请号：US16880185
申请日：2020-05-21
Applicant: EXFO Oy
Inventor： Vesa KYLLÖNEN , Sakari YRTTIAHO , Daniel GARIEPY , Gang HE
Abstract: There is provided a system and a method for extracting data traffic from an optical communication fiber by extracting a portion of the optical signal(s) propagating in the optical communication fiber, carrying the extracted signal over an optical fiber, amplifying the extracted optical signal and filtering the amplified signal to select one channel carrying data traffic. The optically-carried data traffic may then be input to an optical communication transceiver for converting the optically-carried data traffic into electrical data traffic, which carried data can be analyzed for data traffic monitoring applications.
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