Abstract: An active antenna system for a mobile communications network and a method for relaying radio signal in the mobile communications network is disclosed. The active antenna system comprises a plurality of antenna elements for relaying radio signals at a first frequency band. The antenna elements are connected to a plurality of signal paths. A plurality of signal inputs for inputting radio signals at a second frequency band is connected to the plurality of signal paths. A plurality of mixers in the signal paths converts the frequency of the radio signals between the first frequency band and the second frequency band. A plurality of local oscillators is connected to the mixers and a single reference oscillator can be connected through a plurality of first dispersion elements to different ones of the plurality of local oscillators through a plurality of first oscillator signal paths and to a digital signal processor.

Abstract: The present application relates to an antenna array that comprises a plurality of antenna elements and a plurality of amplifiers feeding the plurality of antenna elements. A first group of the plurality of antenna elements is arranged in a first column and a second group of the antenna elements is arranged in a second column. A first amplifier of the plurality of amplifiers has a first power rating and a second amplifier of the plurality of amplifiers has a second power rating, the first power rating being different than the second power rating. The first column is arranged symmetrical to the second column about an axis. Amplifiers feeding the first column have a substantially similar power rating to corresponding amplifiers feeding the second column.

Abstract: An active antenna array (10) for transmitting radio signals is disclosed. The active antenna array comprises a heat dissipating body (20), at least one first power amplifier (30) in thermal contact with the heat dissipating body (20), at least one second power amplifier (40) in thermal contact with the heat dissipating body (20) and an power level controller (50) for adjusting relative power levels of a first output signal (32) emanating from the at least one first power amplifier (30) and a second output signal (42) emanating from the at least one second power amplifier (40). A method for the transmission of radio signal is also disclosed.

Abstract: A method for geolocating a wireless communication unit. The method comprises receiving measurement data for radio frequency (RF) signals between the wireless communication unit and at least one base transceiver station, calculating an RF measurement based geolocation estimate for the wireless communication unit based at least partly on the received RF signal measurement data, obtaining geographical area data for at least one wireless coverage area visible to the wireless communication unit, determining a geolocation validation area based at least partly on the obtained geographical area data for the at least one wireless coverage area visible to the wireless communication unit, and deriving a confidence factor for the RF measurement based geolocation estimate based at least partly on the determined geolocation validation area.

Abstract: An active antenna array comprises a plurality of transmission paths, a variable common power supply unit, and an envelope detection system. The transmission paths are adapted to carry a plurality of similar transmission path signals, wherein at least one of the plurality of transmission paths comprises an amplifier having a power input and a signal input for one of the plurality of similar transmission path signals. The variable common power supply unit is connected to the power input of the amplifier for supplying power to the amplifier. The envelope detection system is connected to an envelope input of the variable common power supply unit and adapted to provide a common envelope signal for the plurality of similar transmission path signals to the variable common power supply unit. A method for envelope tracking and computer program products for manufacture and method execution are also claimed.

Abstract: The present disclosure relates to a radio station providing a digital predistortion to be imposed on a payload signal. The digital predistortion is usable as a general predistortion for several transmit paths of the radio station. The radio station provides coupled transmit signals to be combined within a combiner forming a common feedback signal. The common feedback signal is relayed along a common feedback path. A digital predistortion update unit to updates the digital predistortion in order to linearize a transfer characteristics of the transmit paths. The disclosure relates to a method of digitally predistorting a payload signal in order to linearize a transmit characteristics of the transmit paths. The disclosure further relates to computer program products for the manufacture of the radio station and/or a computer product for the execution of the method digitally predistorting. The disclosure further relates to an antenna array comprising the radio station.

Abstract: A monitor for a transmitter, receiver, or transceiver is proposed. The transmitter, receiver or transceiver has at least one component with at least one varying setting parameter controlled by a parameter controller to adjust a spectral degradation of a signal processed by the transmitter, receiver, or transceiver. The monitor comprises an input for receiving the at least one varying setting parameter from the parameter controller, and a setting parameter analyzer for evaluating the at least one varying setting parameter to determine whether the at least one component is normally operating within a desired operating range and to issue a warning signal in case the at least one component is abnormally operating within the desired operating range. The varying setting parameter may be, for example, predistortion parameters or tuning parameters of a voltage controlled oscillator. A corresponding method for monitoring a transmitter, receiver or transceiver is also proposed.

Abstract: A radio station providing a digital predistortion to be imposed on a payload signal is disclosed. The digital predistortion is usable as a digital predistortion for one or more of the transmit paths of the radio station. The radio station provides coupled transmit signals to be switched as a selected one of the coupled transmit signals along a common feedback path. A digital predistortion update unit is adapted to update the digital predistortions in order to linearise a transfer characteristics of the transmit paths according to a hierarchy of the transmit paths. A method of digitally predistorting a payload signal in order to linearise a transmit characteristics of the transmit paths is disclosed.

Abstract: A method for geolocating a wireless communication unit. The method comprises receiving identifiers for at least two wireless coverage areas visible to the wireless communication unit, obtaining crowd-sourced geographical data for the at least two identified wireless coverage areas, and calculating a geolocation estimate for the wireless communication unit based at least partly on the obtained crowd-sourced geographical data for the at least two identified wireless coverage areas.

Abstract: A modular data processing system (200) for processing communication session data from a cellular mobile communications system (210) comprises at least two autonomous data processing units (340 ). The autonomous data processing units (340 ) are arranged in parallel, and are operable simultaneously. Each data processing unit (340) receives and processes raw communication session data from an associated set of controllers of the cellular mobile communications system (210). At least one data collection subsystem (215) supplies the raw communication session data to the at least two autonomous data processing units (340), for calls made within the coverage area of the set of controllers associated with the data processing unit. Processed data may be available more rapidly with the invention. The invention is scalable, and the system may expand as a cellular mobile communications system grows.

Abstract: A system (200) and method (500) are provided for storing communication session data and geolocation information derived from a wireless mobile communications system (210). A record of data for each communication session taking place in at least one geographical region of the mobile radio communications network (210) is stored (510) in a first storage area (220). Each record of data is accessed (520), and a subset of the data for each communication session is stored (530) in a second storage area (250). Geo-location information is derived (540) for each communication session, and stored in the second storage area (250) The method and system may allow much more rapid access to subsets of data, and if necessary to the original records.

Abstract: Communication session data from a mobile radio communications network (100) is processed to extract substantially all communication session data relating to calls in at least two sectors of the network. This processing occurs as the communication session data becomes available, thereby providing a stream of communication session data (210). From the stream of communication session data (210), a high priority data stream (220) is created. The high priority data steam (220) comprises a minority of the communication session data for each call in the at least two sectors of the network (100). Geolocation data (230) is produced for each call. An immediately accessible copy of both the high priority data stream (220) and the geolocation data (230) is provided, for each call.

Abstract: A geolocation data acquisition system (200) and method (400) for acquiring communication session data from a mobile radio communications network (210). A data extraction module (222, 226) extracts call session data continuously from a network of call processors (224, 228), each call processor supporting mobile communication units in an associated geographical region of the coverage area of the mobile radio communications network. The data extraction module (222, 226) provides the extracted data to one of several storage areas (260). In each storage area, a record is created of the communication session data for each call made within the coverage area of an associated set of call processors (224, 228). The records stored in each storage area (260) comprise the data available for all communication sessions in the geographical region associated with the corresponding set of call processors (224, 228).

Abstract: An active antenna array for a mobile communications system is disclosed which comprises a plurality of receive paths in which an individual one of the receive paths is connected between an antenna element and an analogue to digital converter and wherein the analogue to digital converter digitises a receive signal to form a digitised receive signal. The active antenna array further comprises a sounding signal generator for generating a sounding signal in which the sounding signal is supplied to at least two of the plurality of receive paths and a receive signal subtraction device for subtracting a wanted signal from the digitised receive signal.

Abstract: The present disclosure teaches an active antenna array for a mobile communications network. The active antenna array comprises a plurality of first polarization antenna elements and a plurality of second polarization antenna elements. The plurality of first polarization antenna elements is connected to a first protocol signal generator. The plurality of first polarization antenna elements are adapted to radiate an individual first protocol transmit signal. An individual one of the plurality of second polarization antenna element is connected to an individual one of a plurality of second protocol signal generators. The plurality of second polarization antenna elements is adapted to radiate an individual second protocol transmit signal. An individual one of the plurality of first polarization antenna elements and the individual one of the plurality of second polarization antenna elements are adapted to receive both, an individual first protocol receive signal and an individual second protocol receive signal.

Abstract: A base-station failure predictor comprises an interface to at least one sub-unit of a base-station of a mobile communications network, an alarm memory, and an alarm evaluator. The base-station failure predictor is adapted to receive a plurality of alarms from the at least one sub-unit of the base-station via the interface. The plurality of alarms are stored in the alarm memory, and the alarm evaluator is adapted to analyze the frequency of the plurality of alarms to assess a likelihood of failure of the at least one sub-unit concerned. A base-station failure prediction method is also proposed. Furthermore, a computer program product with instructions for the manufacture and a computer program product enabling a processor to carry out the base-station prediction method are also proposed.

Abstract: A filtering device comprises an analogue quadrature splitter together with a first filtering element and a second filtering element. The filtering device is adapted to transform filtering characteristics of the first filtering element and filtering characteristics of the second filtering element into an effective filtering characteristic present in an output signal at an output terminal of the analogue quadrature splitter. The first filtering element and the second filtering element comprise filtering elements of high accuracy, with a steep roll-off but poor power handling capabilities. Using a high power quadrature splitter it is possible to transform the filtering characteristics of the first filtering element and/or the second filtering characteristic of the second filtering element into the effective filtering characteristics.

Abstract: The present disclosure teaches an active antenna array for a mobile communications network. The active antenna array comprises a plurality of antenna elements, a first port, a first DC voltage supply and at least one DC voltage extractor. The plurality of antenna elements relays at least first protocol radio signals. The first port is connected to at least one individual first protocol relay path. The first port relays a general first protocol receive signal to a first protocol link. The first DC voltage supply provides a first DC voltage to at least a portion of the first protocol link. The at least one DC voltage extractor, is located in the at least one individual first protocol relay path. The DC voltage extractor extracts at least one individual DC voltage to supply an at least one amplifier.

Abstract: An active antenna system and a method for relaying radio signal in the mobile communications network is disclosed. The active antenna system comprises a plurality of antenna elements for relaying radio signals at a first frequency band. The antenna elements are connected to a plurality of signal paths. A plurality of signal inputs for inputting radio signals at a second frequency band is connected to the signal paths. A plurality of first mixers in the signal paths converts the frequency of the radio signals between the first frequency band and the second frequency band. A single first local oscillator is connected to the first mixers through a first oscillator signal path and supplies first oscillator signals to the first mixers and at least one dispersion element is connected to at least one of the signal paths.

Abstract: The present invention provides a radio system and a method for relaying radio signals. The radio system and the method provide a calibration of transmit radio signals in which no dedicated calibration signal generator is required for calibrating the radio system. The radio system comprises at least one transmit path, a calibration unit at the least one link. A coupled transmit signal is extracted from the transmit paths and selectively forwarded as a feedback signal to a feedback signal demodulator. The feedback signal demodulator generates a base band feedback signal adapted for updating phase and amplitude changes applied a calibrated payload signal.