Abstract: Methods and apparatus are disclosed for a wireless transmit/receive unit (WTRU) to detect and perform measurements with respect to Home Node-Bs (HNB) and Home evolved Node-Bs (H(e)NB) (collectively “HNB”). The methods may include generating and transmitting a request for a measurement configuration that may include gap allocations to detect and measure a primary scrambling code or a physical cell identity of a target HNB for at least one frequency or radio access technology (RAT). The request may be in response to the WTRU entering a HNB cell for which the WTRU has stored fingerprint information and whose closed subscriber group ID is in the WTRU's whitelist. The network may configure the WTRU to measure the requested frequency or RAT in response to the proximity report/request. Methods are described for releasing the measurement configuration.

Abstract: A receiver, which is adapted for demodulating signal carriers at variable frequencies to provide received signals at a plurality of different received frequencies, is calibrated to compensate for a frequency-dependent imbalance in the amplitude and/or the quadrature phase of analog in-phase (I) and quadrature (Q) received-signal components that have passed through receiver circuit paths that may cause such imbalance. I-channel and Q-channel Rx-correction coefficients for each of a plurality of different calibration frequencies are estimated and stored in a lookup table.

Abstract: A method and system of optimizing transmit beam forming in a multiple radio wireless system is provided. A stimulus signal can be provided to an analog receive input of a device under test (DUT), wherein the DUT includes multiple radios. A receive phase and amplitude can be measured at baseband using the stimulus signal for each radio. At this point, a receive weight and its conjugate can be determined using the receive phases and amplitudes. A calibration vector and its conjugate can also be determined, wherein a product of the receive weight conjugate and the calibration vector conjugate generate a transmit weight. This transmit weight can be applied to transmit signals during the transmit beam forming using the multiple radios.

Abstract: Prior to being admitted into the network, a base station establishes a set of operating parameters. Next, a search is performed to determine the presence and configuration of neighboring base stations and current network conditions. Based on the search results, an improved operating configuration is determined for the base station and the base station's operating parameters are adjusted. Once the base station is admitted to and is operating in the network, the base station continues to monitor neighboring base stations and network conditions and adjusts its operating parameters accordingly.

Abstract: The present invention discloses a method of manufacturing an electronic apparatus for wireless communications in that the method includes the steps of arranging an antenna apparatus adjacent to the electronic apparatus formed on a substrate and testing the electronic apparatus by conducting the wireless communications between the electronic apparatus and the antenna apparatus.

Abstract: Disclosed herein is a method for generating a test signal for testing the accuracy of the CINR measurement of a subscriber station. The method includes step (a) of checking a preamble code corresponding to a predetermined cell ID, reading corresponding preamble data from a preamble code table, and taking it as desired preamble data, step (b) of completing generation of desired signal data by generating desired pilot data and various information data, step (c) of randomly selecting one preamble code from among preamble codes corresponding to cell IDs other than the cell ID, reading corresponding preamble data from the preamble code table, and taking the preamble data as interference preamble data, step (d) of generating interference pilot data, and step (e) of generating test signal data by adding the interference preamble data and the interference pilot data to the desired signal data.

Abstract: Embodiments of methods, transceiver circuits, and systems can compensate an IQ mismatch (e.g., Tx or Rx) or a carrier leakage using a plurality of local oscillators. One embodiment of a transceiver can include a first up-conversion IQ mixer, a second up-conversion IQ mixer, a first down-conversion IQ mixer with an input to receive an output of the second up-conversion IQ mixer, a second down-conversion IQ mixer with an input to receive an output of the first up-conversion IQ mixer, a first local oscillator to generate a first IQ LO signal for the first up-conversion IQ mixer and the first down-conversion IQ mixer, and a second local oscillator to generate a second IQ LO signal for the second up-conversion IQ mixer and the second down-conversion IQ mixer.

Abstract: Various embodiments are disclosed relating to a wireless transceiver. In an example embodiment, a method of compensating for phase imbalance and amplitude imbalance between corresponding in-phase signals and quadrature-phase signals includes providing a plurality of test tones of various frequencies to a receiver and determining, for each of the test tones, a respective phase imbalance and a respective amplitude imbalance between an in-phase (I) signal and a quadrature-phase (Q) signal of the test tone. The example method also includes determining a set of filter coefficients based on the determined phase and amplitude imbalances of the plurality of test tones and applying the set of filter coefficients to a plurality of filters. In the example method, a phase imbalance between an I signal and a Q signal of a received wireless signal is compensated for using a first filter of the plurality of filters.

Abstract: A method for calibrating a hands-free system is provided. The hands-free system comprising a hands-free unit and a mobile phone, the method comprising the following steps of setting up a connection between the hands-free system and a distant terminal via a mobile telephony network of the mobile phone, transmitting a predetermined test signal from one of the hands-free system and the distant terminal to the other of the hands-free system and the distant terminal, the predetermined test signal being provided in both the hands-free system and the distant terminal as reference test signal, comparing the received test signal to the reference test signal stored in the other of the hands-free system and the distant terminal, and determining the calibration parameters of the hands-free system in accordance with the comparison.

Abstract: The present invention relates to a multi-antenna radio channel measurement system and method for a two-way radio channel measurement, including: Control & Console Software to select a radio measurement mode, generate a probing signal for measurement, receive input parameters to be measured, and deliver the parameters to a baseband unit; a baseband unit (BBU) to set a transmission/reception frequency band and bandwidth and set a timing using the selected radio measurement mode and the received input parameters; a timing unit to synchronize a time with another radio channel measurement system to generate a transmission/reception synchronization signal, and provide the transmission/reception synchronization signal to the BBU; a transceiver unit (TRXU) to up-convert the probing signal for measurement and down-convert the reception channel signal; and a radio frequency (RF) front-end unit (RFFU) to switch to a suitable antenna according to a timing control signal of the BBU.

Abstract: A method, a management system and an application for coordinating the transmission of a geolocated instruction from a roaming element (12) to a multimedia element (4) on board a vehicle. To do this, the method includes notably transmitting an anticipation instruction (24), as a function of a latency time for the restitution of the geolocated instruction by the multimedia element (4) and transmitting this anticipation instruction (24) to the roaming element (12) so as to coordinate the transmission of this geolocated instruction.

Abstract: The present invention relates to a method for checking connectivity between a BSC (Base Station Controller) and an MSC (Mobile Switching Center), including: the MSC loopbacking a circuit and sending a connectivity check command to the BSC to instruct the BSC to perform the connectivity check; the BSC performing the connectivity check according to the connectivity check command; if the connectivity check is successful, the BSC sends a Connectivity Check Success identifier to the MSC to instruct the MSC to cancel the self-loop of the circuit; if the connectivity check fails, the BSC sends a Clear Request message to the MSC to release the communication connection and cancel the self-loop of the circuit. Embodiments of the present invention implement quick and convenient locating of connection errors by adding a Connectivity Check command in the messages for A-interface.

Abstract: Embodiments of methods and means for passively emulating channels in a multiple-input multiple output (MIMO) system are provided. Such embodiments include passively splitting a plurality of radio frequency signals into a greater plurality of such signals. Each of the greater plurality of radio frequency signals can then be selectively and passively attenuated, delayed and/or phase shifted. The resulting modified radio frequency signals are then recombined crossed over channels and coupled to a plurality of output nodes. Economical and versatile device and system testing is thus facilitated in a low-noise radio frequency environment without the need for complex up/down frequency or analog/digital conversions.

Abstract: The invention relates to a method for testing a mobile radio device comprising at least one first antenna (9) and a second antenna (10), and to a mobile radio device (2) and test equipment (1). A signal generation unit (5) of the test equipment (1) generates a test signal (27). The test signal is transmitted to a mobile radio device (2) to be tested and is received by the mobile radio device (2) and evaluated. The mobile radio device (2) then generates a response signal (31) and a transmission schedule (30) for transmitting the response signal via the first antenna (9) and/or the second antenna (10) is defined. The response signal (33) is transmitted according to the transmission schedule and received by the test equipment (1). The transmission schedule used is determined by the test equipment. The transmission schedule (36) used is then determined.

Abstract: Wireless system electromagnetic propagation or attenuation design or analysis is performed by determining (by calculation or empirically) the attenuation between all sets of grid points of a terrain. To make the information readily available, the results of the determinations are stored in computer memory. The information is stored in the form of bytes representing integer values of decibels, and the information is stored only for those grid points corresponding to a log-radial (log-polar) mapping. In order to use the data for analysis or design, the desired values are estimated from the log-radial mapping.

Abstract: A satellite receiving system (200, 300) and a method for adjusting a satellite receiving system include an input (113); a first oscillator (106) with theoretical frequency (FOSC1) and real frequency (FOSC1?), a first frequency mixer (105) delivering a signal at a first intermediate frequency (F2), a second oscillator (302) with frequency (FOSC2), a second frequency mixer (301) delivering a signal at a second intermediate frequency (FOUT), a microcontroller (202), which controls a real frequency (FVCO) of the second oscillator, and an output (110). An external signal (112) at a determined frequency (F1) is supplied to the input (113). A nominal value (FOSC2) of the frequency of the second oscillator is determined as a function of the input frequency (F1), the theoretical frequency (FOSC1) of the first oscillator and the second intermediate frequency (FOUT). The frequency of the second oscillator is controlled, via the microcontroller, at the determined nominal value.

Abstract: A calibration apparatus and method for controlling the phase and amplitude of a signal in a smart antenna multicarrier communication system are provided. A calibration signal is allocated to remaining carriers after allocating carriers to a data signal, prior to transmission. Thus, the efficiency of frequency resources for data transmission is increased.

Abstract: Disclosed is a compact reconfigurable channel emulator, which may be used to emulate severe fading environments and test wireless systems and subsystems for operation in severe channel environments. Examples include radios, coding schemes, diversity methods and antennas. In particular, the chamber is well suited to test hardware associated with wireless sensor deployments for these tend to be susceptible to severe fading scenarios. Moreover, the invention is significantly smaller than traditional testing instruments, and with its automation, reduces electromagnetic interference and electromagnetic compatibility testing time and costs.

Abstract: Embodiments of the present invention provide a protocol tester for performing a protocol test, said protocol tester exhibiting an input for the feeding in of data, a protocol decoding device for the decoding of data, and an output for providing the decoded data, the protocol tester also comprising a device for measuring the bit error rate. A corresponding method for performing a protocol test is also provided.

Abstract: Methods and systems for measuring and optimizing integrated antenna performance are disclosed and may include transmitting FM signals over a range of frequencies utilizing one or more antenna configurations. The FM transmitter may be calibrated based on a signal received by one of a plurality of wireless protocol receivers in the wireless device. The wireless device may include one or more other corresponding transmitters that utilize other wireless protocols. The transmitted FM signals may be received by a test set, which may then transmit a signal utilizing a different wireless protocol for adjusting the FM transmitter. The frequency of the transmitted FM signals may be varied utilizing a tunable oscillator, and the antenna configurations may be adjusted accordingly by impedance matching them to the FM transmitter. The FM transmitter and FM receiver and the tunable oscillator may be integrated within a single chip.

Abstract: A transmitter circuit 10 with a first characteristic controllable by a first control signal and a second characteristic controllable by a second control signal is calibrated using a calibration method to enable accurate power control. The transmitter circuit 10 will typically comprise a VGA amplifier 16 and a power amplifier 22. Typically, the gain of the VGA amplifier 16 is controlled and so is the current supplied to the power amplifier 22. The method comprises a number of operations including defining a set of multiple signal values for the first control signal, setting the first control signal to a level corresponding to a signal value from the set of multiple first control signal values. Then the second control signal is adjusted to cause the transmitter to operate in a desired manner and the power in a signal transmitted by the transmitter is measured. The setting, adjusting and measuring is repeated for each signal value in the set of multiple first control signal values.

Abstract: A method of wired connection measuring the standby time of a CDMA mobile terminal, connects the CDMA mobile terminal with network emulator, and places them in the network test environment, then measures the standby current, voltage and electric quantity at standby time of the mobile terminal, thereby calculates the standby time of the mobile terminal. This method needs low test environment, and testing is simple and rapidly.

Abstract: Certain embodiments of the present disclosure relate to a Fourier-Quadratic (FQ) method for channel estimation that may help improve error rate performance of existing techniques, with only moderate increase in computational complexity. The proposed FQ scheme according to certain embodiments may provide a viable solution to the difficult channel estimation problem encountered in the Vehicular B channel with a long delay spread. Furthermore, a robustness of the proposed FQ channel estimation scheme to accommodate errors in a channel delay profile and to errors in a channel power profile is demonstrated through simulations.

Abstract: A method for testing a data packet transceiver as a device under test (DUT) by communicating, between one or more test instruments and the DUT, multiple data packets having at least one mutually distinct signal characteristic, such as data packet type, transmission power or transmission frequency.

Abstract: A method for testing a mobile-radio device is provided. The method includes determination of information regarding at least one real mobile-radio network using a measuring device, and additionally and independently using a mobile-radio device. The method further includes analysis of the information, received through the measuring device and through the mobile-radio device, regarding the mobile-radio network using an analysis device, analysis of all signals incoming to and respectively outgoing from the mobile-radio device using an analysis device, conversion of the information into an instruction sequence, and simulation of the real mobile-radio network through the implementation of at least a part of the instruction sequence by the test device.

Abstract: A method for monitoring voice quality in a communication network. In a first embodiment, the method comprises the steps of: establishing a voice communication pathway (VCPW) between first and second telephone terminals; establishing speech cadence between first and second terminals, wherein the terminals alternate between opposing send and listen/receive modes such that when one of the terminals is sending a voice test message the other terminal is either listening for or receiving the voice test message and vice versa; and calculating a voice quality score for one or more received voice test messages. In a second embodiment, synchronous cadence is established between a plurality of telephone terminals and a voice recognition server (VRS).

Abstract: Disclosed is a multi-transceiver system adapted to estimate a frequency offset on basis of a test signal and a reference signal. Transceivers in the multi-transceiver system are adapted to transmit signals compensated with the frequency offsets.

Abstract: Methods and apparatus for interface negotiation using a device supporting multiple communication interfaces. In one implementation, a wireless device includes: a wireless communication interface supporting communication across a wireless connection; and a controller connected to said wireless interface supporting a negotiation service and a communication service; wherein said negotiation service provides interface negotiation for using said wireless interface to negotiate with another device to select a communication interface for communication with said another device, and said communication service provides control and management of communication with said another device across a connection established using said negotiation service.

Abstract: A processing unit transmits, from at least one of a plurality of antennas, data corresponding respectively to the plurality of antennas. A control unit generates request signals with which to let a second radio apparatus supply information on rates at the second radio apparatus. When transmitting the request signal, the processing unit also transmits, from a plurality of antennas which includes antennas other than the antennas that transmit the data, known signals corresponding respectively to the plurality of antennas.

Abstract: The object of the invention, which relates to a method and an arrangement for calibrating an analog I/Q modulator in a high-frequency transmitter, is to provide a method and an associated circuit arrangement by means of which a calibration of the I/Q modulator is carried out without a balancing operation and thus the complexity is minimized.

Abstract: Polling methods for use in a communication system, such as a fixed wireless communication system, are described. The fixed wireless communication system includes at least one wireless base unit and a plurality of fixed-location wireless transceiver units, where each transceiver unit is, for example, located at a home residence and coupled to a personal computer (PC). In one particular polling method, a wireless transceiver unit detects a failure of a primary energy source, switches to a battery backup for power, and sends a message to the wireless base unit indicating such failure. The message initiates the wireless base unit to poll the wireless transceiver unit on a periodic basis for status information. During the failure, a data traffic channel established between the units is torn down to conserve power at the wireless transceiver unit. Once the primary energy source is restored, the data traffic channel is brought back up and the periodic polling is terminated.

Abstract: The object of the present invention is to provide a mobile terminal tester which can reduce the production cost from that of the conventional mobile terminal tester.

Abstract: A receiving apparatus which is used while connected to a plurality of antennas, the receiving apparatus receiving a radio signal through the antennas to perform a predetermined process to the received radio signal, the radio signal being transmitted from a body-insertable apparatus inserted into a subject, includes a receiving antenna selection unit that selects the antenna which is suitable for reception of the radio signal when the radio signal is transmitted from the body-insertable apparatus; a sequential antenna selection unit that sequentially selects each of the plurality of antennas when performance inspection of the plurality of antennas is performed; and a signal processing unit that performs a predetermined process to the radio signal received through the antenna, the antenna being selected by the receiving antenna selection unit or the sequential antenna selection unit.

Abstract: Systems and methods for using wireless radios for spectral analysis. Systems and methods include using wireless radios that are included in wireless devices communicating on the wireless network to perform a spectral scan of frequencies on a wireless network.

Abstract: A processing unit transmits, from at least one of a plurality of antennas, data corresponding respectively to the plurality of antennas. A control unit generates request signals with which to let a second radio apparatus supply information on rates at the second radio apparatus. When transmitting the request signal, the processing unit also transmits, from a plurality of antennas which includes antennas other than the antennas that transmit the data, known signals corresponding respectively to the plurality of antennas.

Abstract: A processing unit transmits, from at least one of a plurality of antennas, data corresponding respectively to the plurality of antennas. A control unit generates request signals with which to let a second radio apparatus supply information on rates at the second radio apparatus. When transmitting the request signal, the processing unit also transmits, from a plurality of antennas which includes antennas other than the antennas that transmit the data, known signals corresponding respectively to the plurality of antennas.

Abstract: A processing unit transmits, from at least one of a plurality of antennas, data corresponding respectively to the plurality of antennas. A control unit generates request signals with which to let a second radio apparatus supply information on rates at the second radio apparatus. When transmitting the request signal, the processing unit also transmits, from a plurality of antennas which includes antennas other than the antennas that transmit the data, known signals corresponding respectively to the plurality of antennas.

Abstract: A processing unit transmits, from at least one of a plurality of antennas, data corresponding respectively to the plurality of antennas. A control unit generates request signals with which to let a second radio apparatus supply information on rates at the second radio apparatus. When transmitting the request signal, the processing unit also transmits, from a plurality of antennas which includes antennas other than the antennas that transmit the data, known signals corresponding respectively to the plurality of antennas.

Abstract: A processing unit transmits, from at least one of a plurality of antennas, data corresponding respectively to the plurality of antennas. A control unit generates request signals with which to let a second radio apparatus supply information on rates at the second radio apparatus. When transmitting the request signal, the processing unit also transmits, from a plurality of antennas which includes antennas other than the antennas that transmit the data, known signals corresponding respectively to the plurality of antennas.

Abstract: An embodiment of the present invention an apparatus, comprising an adaptive impedance matching module (AIMM) adapted to minimize the magnitude of an input reflection coefficient seen at an RFin port under boundary conditions of a variable load impedance ZL, a tuner connected to the AIMM and including a plurality of variable reactance networks with independent control signals, wherein node voltages are sampled within the tuner; and a microcontroller or digital signal processor (DSP) calculates complex reflection coefficient information from the sampled voltages, the microcontroller or DSP providing a coarse and fine tune function that feeds bias signals to control impedance matching.

Abstract: A device system, computer medium and method for calibrating at least one impairment of a signal transmitted from a transmitting unit to a receiving unit, the method including receiving at the receiving unit at least two signals transmitted from the transmitting unit, estimating at the receiving unit, based on the received at least two signals, at least one parameter associated with transmit chain links between the transmitting unit and corresponding antennas of the transmitting unit, collecting the at least one parameter in a measurement report at the receiving unit, and transmitting the measurement report from the receiving unit for correcting the at least one impairment based on the at least one parameter.

Abstract: Apparatus and methods enabling the efficient and repeatable measurement of mobility performance of wireless data communications equipment are described. This is particularly useful for testing the impact of roaming of Wireless Local Area Network (WLAN) devices, such as clients, between their counterparts, such as access points. The apparatus and methods include controlled emulation of roaming by WLAN devices, using a set of WLAN tester units, by activating and deactivating instances of emulated devices on different tester units to simulate the physical translation of the actual WLAN devices in an environment. Simulation of increasing and decreasing distance during the roaming process is also rendered possible. This enables various mobility performance measurements to be made on WLAN devices in a repeatable manner, free from artifacts due to device manufacturing tolerances.

Abstract: An electronic device (120) is provided that comprises: a transceiver circuit (310) configured to send and receive signals; a memory unit (330) configured to contain testing, configuration, and calibration (TCC) code (440, 450, 460) used to define TCC functions in the device, and operational code (470) used to define operational functions in the device; and a device controller (320) connected to the transceiver circuit and the memory unit, configured to control the device in an operational mode in accordance with the operational code and operational instructions received via the transceiver circuit (650), and to control the device in a TCC mode in accordance with the TCC code and TCC instructions received via the transceiver circuit (635, 640). The device controller is further configured to permanently disable access to at least a portion of the TCC code in response to a disable instruction received via the transceiver circuit (645).

Abstract: An scheme to provide local oscillator feedthrough offset cancellation to remove baseband and radio frequency coupled offsets. Two separate offset cancellation currents are injected at a driver which drives a baseband signal into a mixer to mix with a local oscillator signal. One offset cancellation current cancels a baseband local oscillator feedthrough offset, while the other offset cancellation current cancels a radio frequency local oscillator feedthrough offset.

Abstract: Method of communicating by radio frequencies in a home-automation installation comprising at least one command transmitter and at least one command receiver, comprising the following steps: receiving by virtue of a radiofrequency receiver of a command receiver a signal transmitted by a command transmitter, —measuring the power level of the signal received, comparing the power level measured with a power level recorded in a memory of powers that are blocked at the level of the command receiver, in the case where the measured power level corresponds to the power level recorded in memory, not processing the signal received.

Abstract: Even if a receiver has a normal gain and a lowered intermodulation distortion characteristics, a fault detection is possible. A test signal transmitter sends a test signal having at least two frequencies to a radio receiver through a coupler. A digital signal processing section receives a signal which includes an IM3 component generated by the radio receiver and measures the electric power of fundamental wave components and the IM3 component. Then, the digital signal processing section calculates the gain of the radio receiver and IIP3, which is an index for intermodulation distortion characteristics, of the radio receiver 207 from the calculated electric power. A base station control section determines whether the gain and IIP3 of the radio receiver fall in predetermined ranges to determine whether the radio receiver works normally or has a fault.

Abstract: According to one embodiment, a low phase noise testing system includes a tester providing a high phase noise digital channel output. The low phase noise testing system further includes a crystal filter configured to receive the digital channel output and to pass a narrow frequency range from the digital channel output, whereby the high phase noise digital channel output is converted to a low phase noise clock for use by a device under test. The crystal filter can be, for example, a monolithic crystal filter or a discrete crystal filter.

Abstract: A system comprising a host and a transceiver coupled to the host is provided where the transceiver is configured to receive a request from a host and cause a test mode of operation to be entered in response to receiving the request.

Abstract: A method for determining an end of a first period in which signals are communicated in a first direction is provided. The method comprises sampling a signal for a period of time up to at least as long as the longest expected length of the first period to obtain a sampled signal. The sampled signal is integrated to obtain an integrated power curve. A reference line is subtracted from the integrated power curve to obtain a rotated power curve. A peak in the rotated power curve is selected as an end of the first period.

Abstract: Methods and devices related to wireless networking. A wireless device has multiple directional antennas and multiple backhaul radio modules which provide point to point wireless links with other wireless devices. Each radio module can use any one of the available directional antennas to link to one other routing device. Antennas are automatically selected for each wireless device by merely setting one device in a “hunt” mode and setting another device in a “listen” mode. Devices in a hunt mode cycle through the available antennas by sequentially transmitting transmit messages to devices in the listen mode using each of the available antennas in turn. Devices in the listen mode also cycle through their available antennas by sequentially “listening” for transmit messages. A listen mode device, receives transmit messages on each of its available antennas, and, after gathering the relevant data, determines which of its antennas is best suited for communicating with the hunt mode device.