Abstract: A system, apparatus and corresponding method by which to synchronize to a time reference a main module of a device—a main module such as global positioning system (GPS) receiver—using a cellular communication signal received by a cellular module also included in the device. To synchronize the main module to the reference time, the invention provides a method including the steps of: having the cellular module respond to the cellular communication signal by providing to a clock module of the main module a trigger pulse derived from the data component of the cellular communication signal, and also by providing to the main module information relating the trigger pulse to a universal time. The main module is then able to resolve a value for time based on the information relating the trigger pulse to a universal time and the trigger pulse.

Abstract: According to an example embodiment of this application, a method may include transmitting at least one preamble with a predetermined power level to a network element; determining whether to retransmit the at least one preamble to the network element; if it is determined to retransmit, retransmitting the at least one preamble with a ramped down power level; and transmitting a message to the network element based on at least one of the predetermined power level and the ramped down power level.

Abstract: A satellite signal receiver 40 comprises a measurement component 43 adapted to perform measurements on received satellite signals. In order to enable an enhanced handling of the measurements, the receiver further comprises a first processing unit 44 adapted to run a software 45 for controlling the measurement component 43 based on received control parameters. In addition, it comprises a first interface component 46 adapted to receive control parameters via another interface component 34 from another processing unit 35, adapted to provide the control parameters to the first processing unit 44 and adapted to forward measurement results from the measurement component 43 via the other interface component 34 to the other processing unit 35.

Abstract: The invention relates to the acquisition of a code modulated signal, wherein a first set of correlation results for correlations between the code modulated signal and a first replica code with different code phases and a second set of correlation results for correlations between the code modulated signal and a second replica code with different code phases are available. In order to achieve a high sensitivity, results from both sets of correlation results are combined, wherein correlation results used in the combination are selected based on information on a relative difference between a correct code phase for both replica codes. Then, it is determined based on the combination whether at least one of the sets of correlation results comprises a correlation result representing the correct code phase for the first replica code or the second replica code, respectively.

Abstract: For supporting a satellite based positioning of a mobile arrangement (30, 40) with assistance data, a communication network converts parameters of a dedicated orbit model describing a movement of a satellite (50, 60), which dedicated orbit model is defined for a particular satellite based positioning system, into parameters of a common orbit model describing a movement of a satellite (50, 60). Alternatively or in addition, the network replaces a reference value that is based on a satellite based positioning system time in available parameters of an orbit model by a reference value that is based on a communication system time. After the parameter conversion and/or the reference value replacement, the parameters are provided as a part of assistance data for the satellite based positioning.

Abstract: For supporting a satellite based positioning of a mobile arrangement (30,40) with assistance data, a communication network converts parameters of a dedicated orbit model describing a movement of a satellite (50,60), which dedicated orbit model is defined for a particular satellite based positioning system, into parameters of a common orbit model describing a movement of a satellite (50,60). Alternatively or in addition, the network replaces a reference value that is based on a satellite based positioning system time in available parameters of an orbit model by a reference value that is based on a communication system time. After the parameter conversion and/or the reference value replacement, the parameters are provided as a part of assistance data for the satellite based positioning.

Abstract: The invention relates to a method for attenuating interferences in a positioning receiver, wherein a signal transmitted by the satellites of a positioning system is received, and the received signal is amplified. In the positioning receiver a noise level of the received signal is determined, the existence of interferences is established on the basis of changes of the determined noise level, and the amplification is controlled on the basis of the noise level of the signal received otherwise than during interference. The invention also relates to an electronic device, wherein the method is applied, as well as to a program, with which the method can be implemented in connection with the positioning receiver.

Abstract: A method for positioning a wireless communication device includes storing position data relating to one or a plurality of reference areas to at least one database. It is examined which of said reference areas is located in the vicinity of the wireless communication device, and at least position data about the reference area located in the vicinity of the wireless communication device is retrieved for the wireless communication device. In order to perform the positioning, the method further includes selecting the reference area located in the vicinity of the wireless communication device as the default position of the wireless communication device.

Abstract: In order to prevent an incorrect synchronization between a received code-modulated signal and an available replica code, partial correlations are performed between a respective subset of samples of the replica code and samples of the received code-modulated signal associated to the respective subset of samples of the replica code at a specific alignment between the received code-modulated signal and the replica code. The results of the partial correlations are then compared to each other, and it may be decided based on this comparison whether the replica code corresponds to a code employed for code-modulating the received code-modulated signal.

Abstract: The present invention relates to a receiver for receiving a spread spectrum modulated signal, comprising a sampler for forming samples of a received signal, at least one reference code block for generating at least first and second reference codes, and a correlation block. The correlation block forms first and second reference code parts from at least one reference code, and correlates the first reference code part with the sample string to form first correlation part results, and correlates the second reference code part with the sample string to form second correlation part results, wherein the correlations are arranged to be performed at different times and by using the same sample string. The invention also relates to an electronic device comprising a receiver, a module to be used with a receiver, a system comprising a transmitter and a receiver for receiving the transmitted signal, a method and a computer software product.

Abstract: For processing a sequence of samples of a signal, it is assumed that the signal comprises a carrier that is modulated by a code composed of a sequence of chips. A method of wiping-off an influence by the carrier on the sequence of samples and downsampling the sequence of samples (step 105; step 205; step 301) is shown, as well as utilizing the downsampled sequence of samples as a new sequence of samples for further processing (step 108; step 209; step 302). Also shown are a corresponding processing component 72, a corresponding electronic device 71, a corresponding system, a corresponding software program code and a corresponding software program product.

Abstract: The invention relates to supporting an acquisition of a signal, wherein the signal comprises a sequence of complex valued samples, wherein the acquisition comprises an integration of the complex valued samples in subsequent integration intervals, and wherein the signal may be subject to a frequency drift. In order to enable an improved acquisition, a phase angle is estimated in the signal in a respective integration interval (step 504). The samples are adjusted based on the estimated phase angle in a respective integration interval (step 505). Only the adjusted samples from a plurality of integration intervals are then integrated (step 507, 508).

Abstract: A system architecture for a receiver to process multiple signals on a common carrier frequency from a satellite. The receiver is arranged such that the receiver receives input data transmitted from the satellite. A pilot signal is tracked from the input data using a correlation channel, and a data signal is tracked from the input data using a data code generator operatively connected to the correlation channel. In one embodiment of the invention, the data signal generator creates replica code for the data signal. In another embodiment of the invention, the system can switch between the data signal generator and pilot signal generator based upon the signal-to-noise ratio of the incoming signal.

Abstract: The present invention provides a method for a multi-path detection analysis and selectivity of CDMA signals using spread spectrum receivers using a correlation technique. The invention is based on determining by the spread spectrum receiver whether a distortion of a received radio frequency signal, caused by a multi-path component of said received signal, meets a predetermined condition using a pre-selected correlation analysis of said received signal. This invention is generally applicable to global navigation satellite system (GNSS) receivers and it is particularly useful in GNSS receivers, such as GPS (global positioning system) and Galileo receivers. The important goal of this invention is to provide a simple method for identifying signals that are corrupted by multi-path effects, and can be excluded from position calculation in the GNSS receivers.

Abstract: A non-coherent integration period is divided into a plurality of epochs and a frequency space is divided into a plurality of sub-spaces. A result of a first non-coherent integration in a first frequency sub-space over a first epoch is combined with a result of a second non-coherent integration in a second frequency sub-space over a second epoch. A method of non-coherent integration in an environment subject to drift of a time reference, the method including: creating a first putative non-coherent integration value by assuming no-drift of the time reference; creating a second putative non-coherent integration value by assuming drift of a first rate of the time reference; and determining a non-coherent integration value using the first putative non-coherent integration value and the second putative non-coherent integration value.

Abstract: A positioning receiver is shown having one or more receiving channels for receiving a signal from a positioning station, a controlling element for controlling the reception of the signal from the positioning station, and a clock generator for generating a clock signal for said controlling element. The positioning receiver also has a sampler for taking samples at least first and second sampling rates, and a selector for selecting samples from the samples taken at the at least first and second sampling rates, to be used in the controlling element, for controlling signal reception. Furthermore, the invention relates to a system, a wireless communication device, a module, a method, and a computer software product.

Abstract: A method for positioning a wireless communication device includes storing position data relating to one or a plurality of reference areas to at least one data base. It is examined which of said reference areas is located in the vicinity of the wireless communication device, and at least position data about the reference area located in the vicinity of the wireless communication device is retrieved for the wireless communication device. In order to perform the positioning, the method further includes selecting the reference area located in the vicinity of the wireless communication device as the default position of the wireless communication device.

Abstract: A method for positioning a wireless communication device includes storing position data relating to one or a plurality of reference areas to at least one data base. It is examined which of said reference areas is located in the vicinity of the wireless communication device, and at least position data about the reference area located in the vicinity of the wireless communication device is retrieved for the wireless communication device. In order to perform the positioning, the method further includes selecting the reference area located in the vicinity of the wireless communication device as the default position of the wireless communication device.

Abstract: The present invention provides a method for a multi-path detection analysis and selectivity of CDMA signals using spread spectrum receivers using a correlation technique. The invention is based on determining by the spread spectrum receiver whether a distortion of a received radio frequency signal, caused by a multi-path component of said received signal, meets a predetermined condition using a pre-selected correlation analysis of said received signal. This invention is generally applicable to global navigation satellite system (GNSS) receivers and it is particularly useful in GNSS receivers, such as GPS (global positioning system) and Galileo receivers. The important goal of this invention is to provide a simple method for identifying signals that are corrupted by multi-path effects, and can be excluded from position calculation in the GNSS receivers.

Abstract: A satellite signal receiver 40 comprises a measurement component 43 adapted to perform measurements on received satellite signals. In order to enable an enhanced handling of the measurements, the receiver further comprises a first processing unit 44 adapted to run a software 45 for controlling the measurement component 43 based on received control parameters. In addition, it comprises a first interface component 46 adapted to receive control parameters via another interface component 34 from another processing unit 35, adapted to provide the control parameters to the first processing unit 44 and adapted to forward measurement results from the measurement component 43 via the other interface component 34 to the other processing unit 35.