摘要:
The invention concerns devices and methods designed to enable radiotelephones to react appropriately in zones of filtering or interference by generating a filtered model for its operation or by direct connections, to manage the filtering and priority cases.
摘要:
Zur Benutzung von Mobiltelefonen in einem Verkehrsflugzeug, die in einem insbesondere nach dem GSM-Standard arbeitenden Zellular-Mobilfunknetz mit mehreren Basisstationen betreibbar sind und deren Sendeleistung über die Basisstationen regelbar ist, wird an Bord des Flugzeuges eine Basisstation des zugehörigen Mobilfunknetzes vorgesehen, die über eine Funkübertragungsstrecke mit dem zugehörigen bodenseitigen Mobilfunknetz verbunden ist und über welche die Senderleistung eines im Flugzeug aktivierten Mobiltelefons automatisch auf ein Minimum reduziert wird.
摘要:
Es ist ein Mobilfunksystem angegeben, bei dem es möglich ist, selektiv in Gesprächsverbindungen einzugreifen. Dafür ist in der Funkfeststation eine Aufkläreinrichtung (5) vorhanden, durch die mindestens ein Verkehrskanal aufklärbar ist, d. h. abgehört oder gestört werden kann. Die Aufkläreinrichtung (5) ist an einen Basisbandverarbeitungsteil (1) angeschlossen.
摘要:
There is provided a method and corresponding arrangement and units for radar detection in a wireless communication system operating in a spectrum shared with at least one radar system. The method basically comprises the steps of collecting (S1) measurement information related to radar sensing measurements by aggregating radar sensing measurements from multiple, geographically distributed radar sensing units forming a radar sensing network implemented in the wireless communication system, and processing (S2) the measurement information according to at least one radar sensing rule to generate a radar detection result. With this new and fundamental radar detection procedure in place, it may further be beneficial to take action(s) for radar protection and/or dynamic adjustment of radar detection functionalities.
摘要:
The present invention relates to a method for detecting a jamming transmitter affecting a communication user equipment, said communication user equipment operating in a cellular network supporting uplink and downlink communication on one frequency band in a time-division manner, the cellular network comprising a plurality of base stations, including at least one active base station, which is the base station the communication user equipment is camping on, the method comprising the steps for the communication user equipment: - detecting that at least one downlink radio channel from the active base station is not decodable, - measuring signal levels received on said downlink radio channel for a plurality of time units, - analyzing said signal level measurements, - in case at least one time unit is detected with a signal level exceeding a predefined threshold, - detecting a jamming transmitter by verifying the condition that in a predefined amount of successive time units the pattern of a first time unit with signal level exceeding the predefined threshold directly followed by a second time unit with a signal level below the predefined threshold is not detected.
摘要:
Methods and systems for extracting mobile communication terminal identifiers from mobile terminals carried on individuals. The disclosed techniques refer to communication terminals that communicate over both a cellular network and a Wireless Local Area Network (WLAN). An interrogation device intercepts the communication of such a communication terminal at a defined location and at a defined time. The interrogation device extracts from the intercepted communication two types of identifiers - a cellular identifier that identifies the terminal in the cellular network, and a WLAN identifier that identifies the terminal in the WLAN. A correlation system correlates the cellular and WLAN identifiers, and output the correlation for later use.
摘要:
A distributed antenna system (5) with a plurality of remote radio units (15a-c) is disclosed. The distributed antenna system (5) includes a jammer signal generator (17a-c, 27, 117a-c) for generating a jammer signal (55) in at least one frequency range to be blocked on detection of an uplink signal in a coverage area, as well as at least one antenna element (10a-c) for transmitting the generated jammer signal (55) in the coverage area. The jammer signal (55) will ensure that any mobile devices or stations (40) within the coverage area are unable to transmit radio signals as the frequency range(s) on which the radio signals should be transmitted are blocked by the jammer signal (55).
摘要:
Device and method for confined detection and location of one or more radio devices (4) that are present in a closed or semi-open prohibited zone, characterized in that said device comprises at least the following elements: a linear aerial (1) comprising several orifices Oi suitable for capturing signals emitted by the prohibited radio device or devices and subsequent transmission thereof via the linear aerial to a receiving device (2) linked to the linear aerial (1) via a connector (3), the receiving device being suitable for processing the signals captured by the linear aerial (1) in order to detect the presence of prohibited devices in said zone and to reject detections of authorised devices outside of the said zone.