Abstract: Solutions for interference detection are provided. A frequency band is scanned (200) for transmissions of a transmission system. One or more parameters are determined (202) from the obtained scanning results. At least one determined parameter is compared (204) to a threshold value. On the basis of the comparison it is determined (206) that an unknown transmission exists on a given frequency band. One or more transmission systems are determined (208) which may be the cause of the unknown transmission. At least part of the given frequency band is scanned (210) for transmissions of the determined one or more transmission system; and on the basis of the scanning the system causing the unknown transmission is determined. Information related to the system and transmission parameters of the unknown transmission are decoded (212).

Abstract: Apparatus and method for recognizing Global System for Mobile communication (GSM) signals are provided. The solution comprises obtaining position and timing information from a satellite positioning system; tuning to a frequency channel with GSM transmission; collecting a group of I/Q samples for the length of 12 GSM frames; performing peak detection using at least two peak detectors over the group of samples wherein the found peak values are the locations of synchronization bursts (SCH). For the found peaks, the timing information, carrier-to-noise ratio, in phase and quadrature values are determined. A group of I/Q samples for the length of 12 or 51 GSM frames are collected. From the found SCH, base station identification code BSIC, frame number and Broadcast Control Channel (BCCH) training sequence are determined. BCCHs corresponding to all SCH are decoded; and transmitting base stations identified.

Abstract: Testing apparatuses and methods are provided. The solution comprises establishing a digital connection with an external controller, receiving from the external controller on the digital connection test parameters and a command to establish a wireless connection to a given subscriber address, establishing a wireless phone call connection to the given subscriber address, receiving sample audio data on the connection, and transmitting information related to the received sample audio data to the external controller using the digital connection.

Abstract: Apparatus and method for recognizing Global System for Mobile communication (GSM) signals are provided. The solution comprises obtaining as an input a sampled signal; determining the 8th order moment for a group of samples of the input signal corresponding to the length of one or two frames of a GSM signal; determining peak to average power and peak to average power variance for the group of samples of the input signal corresponding to the length of one or two frames of a GSM signal; comparing the obtained 8th order moment to predetermined thresholds and the obtained peak to average power and peak to average power variance to predetermined thresholds; determining whether the input signal is a GSM-type signal on the basis of the comparisons.

Abstract: Apparatus and method for recognizing Global System for Mobile communication (GSM) signals are provided. The solution comprises obtaining position and timing information from a satellite positioning system; tuning to a frequency channel with GSM transmission; collecting a group of I/Q samples for the length of 12 GSM frames; performing peak detection using at least two peak detectors over the group of samples wherein the found peak values are the locations of synchronization bursts (SCH). For the found peaks, the timing information, carrier-to-noise ratio, in phase and quadrature values are determined. A group of I/Q samples for the length of 12 or 51 GSM frames are collected. From the found SCH, base station identification code BSIC, frame number and Broadcast Control Channel (BCCH) training sequence are determined. BCCHs corresponding to all SCH are decoded; and transmitting base stations identified.

Abstract: Apparatus and method for recognizing Global System for Mobile communication (GSM) signals are provided. The solution comprises obtaining as an input a sampled signal; determining the 8th order moment for a group of samples of the input signal corresponding to the length of one or two frames of a GSM signal; determining peak to average power and peak to average power variance for the group of samples of the input signal corresponding to the length of one or two frames of a GSM signal; comparing the obtained 8th order moment to predetermined thresholds and the obtained peak to average power and peak to average power variance to predetermined thresholds; determining whether the input signal is a GSM-type signal on the basis of the comparisons.

Abstract: A method a system for receiving signals from plural frequency bands and plural communication protocols. An interchangeable radio frequency (“RF”) front end may receive RF signals from plural frequency bands and plural communication protocols. Intermediate frequency (“IF”) circuitry may produce one or more common IF signals from the received RF signals. A common digital back end may then receive digitized versions of the IF signals, modify IF signal bandwidth as a function of the plural communication protocols, and process plural received signals without knowledge of the underlying communication protocols.

Abstract: Apparatus and method for recognizing Global System for Mobile communication (GSM) signals are provided. The solution comprises obtaining as an input a sampled signal; determining the 8th order moment for a group of samples of the input signal corresponding to the length of one or two frames of a GSM signal; determining peak to average power and peak to average power variance for the group of samples of the input signal corresponding to the length of one or two frames of a GSM signal; comparing the obtained 8th order moment to predetermined thresholds and the obtained peak to average power and peak to average power variance to predetermined thresholds; determining whether the input signal is a GSM-type signal on the basis of the comparisons.

Abstract: Apparatus and method for recognizing Global System for Mobile communication (GSM) signals are provided. The solution comprises obtaining position and timing information from a satellite positioning system; tuning to a frequency channel with GSM transmission; collecting a group of I/Q samples for the length of 12 GSM frames; performing peak detection using at least two peak detectors over the group of samples wherein the found peak values are the locations of synchronization bursts (SCH). For the found peaks, the timing information, carrier-to-noise ratio, in phase and quadrature values are determined. A group of I/Q samples for the length of 12 or 51 GSM frames are collected. From the found SCH, base station identification code BSIC, frame number and Broadcast Control Channel (BCCH) training sequence are determined. BCCHs corresponding to all SCH are decoded; and transmitting base stations identified.

Abstract: Apparatus and method for recognizing Global System for Mobile communication (GSM) signals are provided. The solution comprises obtaining as an input a sampled signal; determining the 8th order moment for a group of samples of the input signal corresponding to the length of one or two frames of a GSM signal; determining peak to average power and peak to average power variance for the group of samples of the input signal corresponding to the length of one or two frames of a GSM signal; comparing the obtained 8th order moment to predetermined thresholds and the obtained peak to average power and peak to average power variance to predetermined thresholds; determining whether the input signal is a GSM-type signal on the basis of the comparisons.

Abstract: Apparatus and method for communication are provided. The solution comprises obtaining as an input a signal; sampling the signal; feeding the sampled signal to a given number of parallel correlators having a given correlation length, controlling the correlation the sampled signal in each correlator with a unique time shift section of the pilot sequence of the communication system, determining the strongest correlation peaks, and determining on the basis of the correlation peaks and corresponding time shifts the strongest pilots in the signal.

Abstract: A system, a computer program product and a method of characterizing a cellular telecommunications network area are disclosed. The method comprises: receiving (606) measurement data characterizing measured cell quality of a plurality of radio cells in a plurality of spatiotemporal coordinate points; selecting (608) a plurality of sub-areas within a cellular telecommunications network area, each sub-area confining a plurality of spatiotemporal coordinate points; calculating (610) sub-area cell quality parameters of radio cells, each sub-area cell quality parameter representing cell quality of a radio cell within a sub-area and being calculated by combining measurement data within the sub-area; and generating (612) a cell preference list for at least a portion of the cellular telecommunications network area on the basis of the sub-area cell quality parameters.