Abstract: An ad hoc radio base station obtains information regarding existing 5G NR SA cells; for each existing cell, performs an analysis by detecting a frequency of a synchronization signal block, of the existing cell from the information, decoding a radio frequency, bandwidth of the existing cell from the information, and measuring a reference signal received power of the existing 5G NR SA cell. The station also sets up an ad hoc 5G NR SA cell based on the analysis.

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.

Abstract: Methods and arrangements are disclosed for collecting subscriber identity. A cell is formed for carrying out communications with mobile devices. A channel bandwidth indication is transmitted and indicates to cellular mobile devices the formed cell utilizes bandwidth identical to the bandwidth utilized in neighboring real cells. A downlink radio channel power level on a given continuous channel subset of the indicated channel bandwidth is provided. A communication request from a cellular mobile device is received and radio resources allocated to the cellular mobile device from the given continuous channel subset of the indicated channel bandwidth. A subscriber identity of the cellular mobile device is received from the cellular mobile device.

Abstract: Methods and arrangements are disclosed for collecting subscriber identity. A cell is formed for carrying out communications with mobile devices. A channel bandwidth indication is transmitted and indicates to cellular mobile devices the formed cell utilizes bandwidth identical to the bandwidth utilized in neighboring real cells. A downlink radio channel power level on a given continuous channel subset of the indicated channel bandwidth is provided. A communication request from a cellular mobile device is received and radio resources allocated to the cellular mobile device from the given continuous channel subset of the indicated channel bandwidth. A subscriber identity of the cellular mobile device is received from the cellular mobile device.

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.

Abstract: Method and arrangement for detecting subscriber identity. The method includes: capturing in a fake base station at least one wireless message transmitted from a mobile subscriber apparatus interoperable with a mobile phone system; detecting an encrypted subscriber identity from the at least one captured wireless message; and retrieving an unencrypted subscriber identity from an entity inside an infrastructure of the mobile phone system based on the encrypted subscriber identity.

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.

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.

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.

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.

Abstract: A method and fake base station for detecting subscriber identity are disclosed. 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.

Abstract: A method and fake base station for detecting subscriber identity are disclosed. 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.

Abstract: Method and arrangement for detecting subscriber identity. The method includes: capturing in a fake base station at least one wireless message transmitted from a mobile subscriber apparatus interoperable with a mobile phone system; detecting an encrypted subscriber identity from the at least one captured wireless message; and retrieving an unencrypted subscriber identity from an entity inside an infrastructure of the mobile phone system based on the encrypted subscriber identity.

Abstract: Call data record CDR processing is disclosed: obtaining a plurality of control plane call and session records produced by analysing communication in a monitored telecommunications network; aggregating control plane call data records from control plane call and session records on the basis of a subscriber identifier, each control plane call data record comprising a subscriber identifier as a key and further comprising one or more protocol addresses; creating a control plane data structure comprising subscriber identifier-protocol address-pairs gathered from the control plane call data records; obtaining a plurality of user plane call and session records produced by analysing communication in the monitored telecommunications network; and aggregating the user plane call and session records on the basis of the control plane data structure.

Abstract: This document discloses a solution for outputting a message sequence chart in a computer apparatus. Messages transferred in a communication network are acquired, wherein the messages are logically divided into control plane messages and data plane messages and each message is associated with its transmission direction. Display of the control plane messages is caused on a display screen in the message sequence chart and in a form where each control plane message is displayed together with a unidirectional indicator indicating the transmission direction of the control plane message. Display of the data plane messages is caused in the message sequence chart in a compressed form with a single multidirectional indicator representing a plurality of data plane messages and indicating the transmission directions of the plurality of data plane messages.

Abstract: A key server monitors and captures exchanges of the cipher keys and temporary identity mappings that happen in the devices under test in a wireless communications network. A measurement arrangement and measurement method utilize the key server. At the same time to traffic analyzer captures ciphered signaling messages from the interfaces of the network devices that are under test. The traffic analyzer does not try to decipher captured signaling messages on the fly. The traffic analyzer deciphers the captured signaling messages as an off-line process as post processing.

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: This document discloses a solution for outputting a message sequence chart in a computer apparatus. Messages transferred in a communication network are acquired, wherein the messages are logically divided into control plane messages and data plane messages and each message is associated with its transmission direction. Display of the control plane messages is caused on a display screen in the message sequence chart and in a form where each control plane message is displayed together with a unidirectional indicator indicating the transmission direction of the control plane message. Display of the data plane messages is caused in the message sequence chart in a compressed form with a single multidirectional indicator representing a plurality of data plane messages and indicating the transmission directions of the plurality of data plane messages.

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: Taking control of a subscriber terminal. An apparatus comprises a processor configured to cause the apparatus: to control a first stand-alone base station utilizing a first radio access technology RAT to form an emulated first RAT cell and to set parameters of the emulated first RAT cell such that the emulated first RAT cell becomes a tempting destination for a cell reselection by a subscriber terminal utilizing the first RAT; to control a second stand-alone base station such that a formed emulated second RAT cell becomes a preferred destination for a cell reselection; to control the first stand-alone base station so that the ongoing radio connection with the serving cell base station utilizing the first RAT is transferred to continue with the first stand-alone base station utilizing the first RAT; and to control the first stand-alone base station to perform inter RAT cell reselection with the subscriber terminal.