Abstract: A method and apparatus for adjusting a channel quality indicator (CQI) feedback period to increase uplink capacity in a wireless communication system are disclosed. The uplink capacity is increased by reducing the uplink interference caused by CQI transmissions. A wireless transmit/receive unit (WTRU) monitors a status of downlink transmissions to the WTRU and sets the CQI feedback period based on the status of the downlink transmissions to the WTRU. A base station monitors uplink and downlink transmission needs. The base station determines the CQI feedback period of at least one WTRU based on the uplink and downlink transmission needs and sends a command to the WTRU to change the CQI feedback period of the WTRU.

Abstract: A system for receiving radio stations includes: at least one A/D converter in order to digitize the entire desired frequency band, for instance, an FM band, received via at least one antenna, and a demodulation unit for demodulating at least two signals of different transmitting frequencies of a radio station.

Abstract: A method of scanning neighboring base stations for measuring channel quality in a wireless communication system includes receiving, by a mobile station from a serving base station, information associated with at least one neighboring base station; transmitting, by the mobile station to the serving base station, a scanning request message to request an allocation of a scanning interval for scanning, the scanning request message including parameters associated with a requested scan duration, a requested interleaving interval, and a requested scan iteration, wherein the requested interleaving interval is interleaved between each scan; and receiving, by the mobile station from the serving base station, a scanning response message including an allowed scan duration parameter in response to the scanning request message, wherein the allowed scan duration parameter is set to zero to indicate that the request for the allocation of the scanning interval is denied.

Abstract: A method of scanning neighboring base stations for measuring channel quality in a wireless communication system includes receiving information associated with at least one neighboring base station; transmitting a scanning request message including parameters related to a requested scan duration, a requested interleaving interval and a requested scan iteration; and receiving a scanning response message in response to the scanning request message, the scanning response message including parameters related to an allowed scan duration, an allowed interleaving interval, a scan report mode, and an allowed scan iteration, wherein the scan report mode, which indicates a channel quality measurement reporting method, is set to ‘00’ when the scan report mode indicates no report, set to ‘01’ when the scan report mode indicates a periodic report, and set to ‘10’ when the scan report mode indicates a event-triggered report.

Abstract: In a signal processing method, an input signal is provided at an input to a receiver. A bandwidth of the receiver is controlled to a predetermined wideband setting. For band in a plurality of frequency bands, the input signal is processed at the receiver with a mixer, an amplifier, and a filter, to generate a first processed signal, and a power spectral density of the processed signal is generated over that frequency band, to provide a frequency domain signal for that frequency band. Based on the frequency domain signals corresponding to each frequency band in the plurality of frequency bands, a frequency domain representation of the processed signal is reconstructed over a reconstruction band having a bandwidth larger than the predetermined wideband setting. Based on the reconstructed frequency domain representation, a spectral component is identified corresponding to at least one cellular telephony access mode.

Abstract: A method and a device for controlling uplink/downlink power for radio communication is disclosed. The method includes receiving a radio communications signal in a radio receiver, estimating one or more parameters indicative of the transmission quality of the received radio communications signal based on power control information bits and pilot symbol bits in the radio communications signal, and generating a control signal for the radio receiver and/or the radio transmitter.

Abstract: A method and apparatus for measuring a radio environment of a base station is provided. The method includes respectively selecting one or more frames for measuring a radio environment in a first mode in which an Over-The-Air Receiver (OTAR) of the base station is initialized and a second mode in which the OTAR is active, continuously measuring the radio environment based on the selected one or more frames in the first mode and intermittently measuring the radio environment based on the selected one or more frames in the second mode.

Abstract: FM radio transmitter is being widely used in portable devices as a convenient way to output audio contents to ubiquitously available FM radio receivers in cars or homes. However, the signal from the FM radio transmitter may be interfering with the signal being broadcast by an FM radio station. A scan system is incorporated into the FM radio transmitter to quickly and reliably identify a vacant channel for the FM radio transmitter to use. The scan system measures on-channel and out-of-channel signal quality and selects a best channel for transmission based on the measured on-channel and out-of-channel signal quality. The scan system is also incorporated into an FM radio receiver to quickly and reliably tune to a valid channel. The scan system selects the valid channel based on the measured on-channel and out-of-channel signal quality.

Abstract: Methods and apparatus in a mobile receiver for selecting among methods of estimating a received power of at least one signal. A method includes selecting a first method or a second method of measuring the received power based on a cell timing and a measurement interval. Information is received from a first base station about the measurement interval during which to perform the first method and the second method on a signal transmitted by at least one second base station. The timing of the at least one second base station is determined, and based on the timing of the at least one second base station and the measurement interval, one of the first method and the second method is selected.

Abstract: A method and system are provided in which a device comprising a first or main phase locked loop (PLL) and a second or reference PLL, is operable to communicate utilizing a first and a second receiving antenna. The first PLL may generate a first signal based on a reference signal generated by the second PLL. A second signal may also be generated based on the reference signal. Data associated with a first radio access technology (RAT) may be received via the first receiving antenna utilizing the generated first signal. The first RAT or another RAT may be scanned via the second receiving antenna utilizing the generated second signal. The scan via the second receiving antenna may be performed concurrently with the reception of data via the first receiving antenna. A switch may be utilized to enable or disable scanning operations via the second receiving antenna.

Abstract: A method for communication includes receiving at a receiver from a group of two or more transmitters multiple Radio Frequency (RF) transmission beams that alternate in time and space and include at least first and second transmission beams. The method identifies that the first transmission beam causes interference to reception of the second transmission beam. Feedback is sent from the receiver to one or more of the transmitters, so as to cause the transmitters to attenuate the first transmission beam during transmission of the second transmission beam.

Abstract: A vehicle has a lighting control module and a HD radio receiver. The lighting control module provides an indication of daytime operation of the vehicle and an indication of night-time operation of the vehicle. The HD radio receiver is configured for selecting between outputting digital format audio content of a radio signal and outputting analog format audio content of the HD radio signal dependent upon a HD signal sensitivity threshold. The HD radio receiver sets the HD signal sensitivity threshold to one of a plurality of different night-time HD signal sensitivity threshold values as a function of a signal strength characteristic of the HD radio signal when the lighting control module provides the indication of night-time operation thereto. The HD radio receiver sets the HD signal sensitivity threshold to a daytime HD signal sensitivity threshold value when the lighting control module provides the indication of daytime operation thereto.

Abstract: Methods, devices, and storage media for tracking communications between a user and a user-selected party; obtaining communication tracking information based on the tracking, wherein the communication tracking information includes a time associated with each communication; calculating a communication gap pertaining to the user-selected party based on the communication tracking information, wherein the communication gap is a period of time that elapsed from a last communication with the other party to a current time; and providing the user with communication gap information in response to receiving a user request.

Abstract: The disclosure is related to measuring macrocell quality of a macrocell using femtocells. A method may be provided for measuring macrocell quality of at least one macrocell using a femtocell base station. The method may include measuring, by the femtocell base station, macrocell quality of at least one macrocell based on event information, generating macrocell quality report information based on a result of the measuring, and transmitting the generated macrocell quality report information to a server through a femtocell gateway. The measuring macrocell quality may include determining whether a macrocell identifier is present in the event information, measuring the macrocell quality of a target macrocell corresponding to the mermen identifier of the event when the macrocell identifier is present in the event information, and measuring the macrocell quality of substantially all neighbor macrocells when the macrocell identifier is absent from the event information.

Abstract: A communication device performs a method for detecting presence of a jamming signal. The method includes retrieving a scan list comprising multiple radio channels within a first frequency range of operation of the communication device. The method further includes scanning at least a subset of the channels on the scan list to determine, for each scanned channel, whether energy that exceeds an energy threshold is detected on the scanned channel. Moreover, the method includes determining a first quantitative measure based on a first plurality scanned channels having energy that exceeds the energy threshold, and comparing the first quantitative measure to at least a first jamming signal detection threshold. Additionally, the method includes indicating, on the communication device, presence of a jamming signal when the first quantitative measure satisfies the at least a first jamming signal detection threshold.

Abstract: A method of operating a single-tuner radio includes tuning into a first frequency. A pause in a first signal associated with the first frequency is detected. Tuning is switched from the first frequency to a second frequency during the pause. Fieldstrength, multipath, adjacent channel energy, frequency offset and FM modulation for the second frequency are measured. Tuning is switched from the second frequency to the first frequency. Tuning is switched from the first frequency to the second frequency dependent upon the measuring step.

Abstract: Provided is a device and method for providing an Alternative Frequency (AF) in a wireless terminal, by which an AF channel service suitable for a user environment can be provided. To this end, the device includes a radio broadcast receiver for receiving a radio broadcast signal, and a controller for attempting an AF channel switch after an elapse of a re-try wait time which is set according to a number of recent AF channel switch failures. The controller may detect the user environment as a walking state or a driving state. If a driving state is detected, the AF channel switch is attempted immediately when receive signal quality is below a threshold, regardless of the number of recent AF channel failures. If a walking state is detected, the AF channel switch is attempted after the elapse of the wait time.

Abstract: A signal analysis mechanism for processing and classifying an RF signal received at a WLAN device. A plurality of spectral data captures comprising time-frequency data and receive signal strength indicator (RSSI) data associated with the RF signal received at the WLAN device are generated. The time-frequency and RSSI data of each of the plurality of spectral data captures is processed to determine whether each spectral data capture is a narrowband signal capture. If the plurality of spectral data captures are narrowband signal captures, a narrowband interference signal type associated with the received RF signal is determined based, at least in part, on a plurality of parameters associated with the narrowband signal captures.

Abstract: A radio receiver apparatus calculates all frequencies to be estimated as spurious frequencies in the reception frequency band by performing addition and subtraction operations on frequencies of repeated combinations formed from frequencies of a plurality of intensive electric field station, and controls the spurious frequency not to be preset to the radio receiver apparatus even though signal intensity of a received signal having the spurious frequency exceeds a predetermined threshold.

Abstract: In a method for searching for signals among interference signals in a multi-channel radio receiver, at least two different data signals are transmitted on at least one physical channel of a radio system to a common receiver. The search for a signal is initiated on any channel, starting with a sequential search of a useful signal by measuring the current signal strength in the form of the RSSI value; a search is made for a signal criterion of the signal and when said criterion has been identified, the measured RSSI value is compared with a predefined RSSI threshold value; if the RSSI threshold value is exceeded, the search for a signal is switched to a search for a data frame and if a data frame is found, the useful data is read; if no signal criterion is identified, if the RSSI threshold value is not exceeded and if no data frame is found, the procedure is interrupted and a new search operation is initiated once a new RSSI threshold value has been defined.

Abstract: A disclosed base station apparatus for a mobile communication system includes a collection unit collecting measured data from one or more user equipment terminals with respect to each direction of arrival, the measured data including at least quality information of a downlink signal, a conversion unit converting the measured data into an evaluation value in accordance with a predetermined evaluation function, a deriving unit deriving a weight update amount determining directivity based on an angular distribution of the plural evaluation values, and a transmission unit transmitting a downlink signal weighted based on the weight update amount.

Abstract: A mobile communication device wirelessly transfers user communications to a first wireless base station. The mobile communication device determines a first metric based on a load indicator for the first base station. The mobile communication device identifies a second wireless base station and determines a second metric based on a load indicator for the second base station. If the second metric is superior to the first metric, the mobile communication device determines if the second base station has sufficient performance characteristics for communication with the device. If the performance is sufficient, the mobile communication device initiates a hand-off from the first base station to the second base station. The mobile communication device may use additional factors to determine the first and second metrics.

Abstract: A mobile station that is being served by a current sector receives a neighbor list that identifies a plurality of neighboring sectors and a respective priority for each neighboring sector. For each neighboring sector, the mobile station scans for the sector's pilot signal at a respective scanning frequency during a measurement interval. The scanning frequency for a sector defines how frequently the mobile station scans for the sector's pilot signal during the measurement interval. The mobile station selects a scanning frequency for a neighboring sector based on at least a signal strength of the current sector and the neighboring sector's priority. When the current sector's signal strength is high, the mobile station scans for high-priority sectors more frequently than low-priority sectors. When the current sector's signal strength is low, the mobile station scans for low-priority sectors more frequently than high-priority sectors.

Abstract: A method, an apparatus and a computer program product for controlling cell search procedure, including a user equipment determining a change of position in relation to a serving cell; determining the quality of signal received from the serving cell; and stopping the cell search procedure if the change of position is smaller than a first value and the loss of signal quality is lower than a second value.

Abstract: A method for communication includes receiving at a receiver from a group of two or more transmitters multiple Radio Frequency (RF) transmission beams that alternate in time and space and include at least first and second transmission beams. The method identifies that the first transmission beam causes interference to reception of the second transmission beam. Feedback is sent from the receiver to one or more of the transmitters, so as to cause the transmitters to attenuate the first transmission beam during transmission of the second transmission beam.

Abstract: A method and mobile terminal for searching for alternative frequencies is provided for facilitating alternative frequency search. The mobile terminal having an alternative frequency search function includes a control unit having a radio data decoder for decoding radio data containing a program identifier and for differentiating the radio data by type, a radio data filter for extracting the program identifier from the radio data and for comparing the extracted program identifier with a previously stored program identifier, and a radio data updater for updating an alternative frequency list in response to an instruction of the radio data filter, and a storage unit for storing the alternative frequency list and the differentiated radio data.

Abstract: An exemplary telephone apparatus which can transfer a first phone call from a Bluetooth enabled cellular phone to a home phone and, making a second cellular phone call by a home phone via a Bluetooth enabled cellular phone, includes a Bluetooth enabled integrated chip (IC). The IC includes a Bluetooth modem configured for receiving a Bluetooth signal from a Bluetooth radio frequency (RF) antenna of the cellular phone, a central processing unit (CPU) built-in the IC, for switching controlling of transferring between the first phone call and the second phone call, and a digital signal processor (DSP) and a CODEC built-in the IC. The telephone apparatus makes use of digital signal processing technology to generate and decode various tones and signals. The telephone also avoids the problem of distortion of DTMF tone during transmission through a Bluetooth RF.

Abstract: Disclosed is a radio frequency (RF) receiver for receiving a communication channel modulated on one or more carrier frequencies. The receiver may include a gain adjustable RF amplifier, a wideband signal power measurement circuit, and control logic. The control logic may be adapted to use outputs of one or more measurement circuits to classify interfering signals based on measured signal power and spectral proximity to the one or more channel carrier frequencies, and to adjust the gain of the radio frequency amplifier based on the classification.

Abstract: A device for receiving a broadband multi-channel radiofrequency signal includes a radiofrequency analog input stage connected to an intermediate-frequency conversion stage. The conversion stage includes at least one conversion chain having a frequency mixer that transposes the signal to an intermediate frequency connected to the input of an analog-digital converter with a high frequency sampling rate. The intermediate and sampling frequencies in each conversion chain are selected such that, considering the noise generated by the sampling overtones of the corresponding analog-digital converter, each of the radiofrequency signal channels has a signal/noise ratio that is greater at output than a predetermined value of at least one conversion chain.

Abstract: Embodiments of the present disclosure provide a device comprising a receiver port configured to be operatively coupled to a local receiver antenna; a transmitter port configured to be operatively coupled to a local transmitter antenna and to receive signals received by the local transmitter antenna at least for a portion of time while the local receiver antenna is not operatively coupled to the receiver port; and a quiet spot determination unit configured to receive signals received by the local receiver antenna at least for a portion of time while the local receiver antenna is operatively coupled to the receiver port, receive signals received by the local transmitter antenna at least for the portion of time while the local receiver antenna is not operatively coupled to the receiver port, and determine a quiet spot frequency. Other embodiments are also described and claimed.

Abstract: A method for tuning to a radio broadcast frequency in a portable terminal is disclosed. The method includes: determining whether a condition for requiring tuning information is satisfied; computing tuning information using received signal strength indication (RSSI) values of signals received by frequencies if a condition for requiring tuning information is satisfied; and tuning to a radio broadcast frequency corresponding to a radio broadcasting requested by a user, using the computed tuning information, and receiving radio broadcast signals. The tuning information includes: a threshold of RSSI serving as a reference value determine the presence of a radio broadcasting channel; and a Signal-to-Noise Ratio (SNR) value to minimize noise levels.

Abstract: A scan system receives signals within a band from an antenna and divides the band into sub-bands and scans the channels of each sub-band to determine a candidate channel based on the lowest figure of merit (FOM) and includes an on-channel selection block responsive to a received digital signal and operative to select only the on-channel frequencies and to substantially disregard the out-of-channel frequencies from the digital signal. The scan system generates a FOM on-channel signal representing a measurement of the signal quality of the on-channel signal and includes an out-of-channel selection block responsive to the digital signal and operative to select only the out-of-channel frequencies and to substantially disregard the on-channel frequencies from the digital signal and operative to generate a FOM out-of-channel signal representing a measurement of the signal quality of the out-of-channel signal.

Abstract: A receiver is set forth that includes a tuner circuit and a converter circuit. The tuner circuit provides an analog signal corresponding to a modulated signal that is received on a selected channel. The converter circuit includes a sample clock that is used to convert the analog signal to a digital signal at a conversion rate corresponding to the frequency of the sample clock. The sample clock is selectable between at least two different clock frequencies.

Abstract: A mobile communication system including base stations, wherein each base station includes: a report unit which exchanges a current target value of communication quality for a mobile station with other base stations; a comparison unit which compares a current target value of a current station with target values of the other base stations; and a management unit which changes the current target value based on the comparison result of the comparison unit.

Abstract: Various system embodiments comprise a plurality of devices adapted to wirelessly communicate with each other. The plurality of devices includes a battery-operated hearing assistance device adapted to be worn by a person. The hearing aid device includes a signal processing circuitry connected to a microphone and a receiver. At least one of the plurality of devices includes a link quality management device adapted to assess a link quality for a first wireless communication channel, provide channel metrics indicative of the assessed quality for the first wireless communication channel, and adjust wireless communication over the first wireless communication channel using the channel metrics for the first wireless communication channel.

Abstract: Signal quality of a composite received signal in a radio communication network is optimized by adjusting a phase offset between received and/or transmitted signals based on signal quality parameters of the received and/or transmitted signals. The phase offset is adjusted by varying the phase offset between the received or transmitted signals such that that the composite signal is circularly, elliptically, or linearly polarized. The phase offset between the received or transmitted signals is continually adjusted based on the received signal quality parameters.

Abstract: An uplink power control technique may include a simplified maximum sector throughput (SMST) and a generalized maximum sector throughput (GMST). The SMST and GMST techniques may be used to determine a maximum sector throughput and cell-edge throughput to enhance the overall efficiency of the communication system. The uplink power control technique may determine the optimal uplink power value without collecting interference over thermal noise and without computing the individual channel losses in each neighboring sector.

Abstract: A method including: processing at a first processing frequency, such that each instance of processing is separated by a first processing time period, at least a first signal; increasing the processing frequency to a second processing frequency and switching from processing the first signal to processing a second signal; determining a parameter indicative of the quality of the second signal; and determining, within the first processing time period measured from the last instance of processing the first signal at the first frequency, which one or more signals to process at the next instance of processing by comparing respective parameters of at least the first and second signals.

Abstract: Methods and apparatus well suited to decentralized traffic scheduling in wireless peer to peer network are described. An individual wireless terminal corresponding to a peer to peer connection makes a transmitter yielding or receiver yielding decision for a traffic slot. Quality of service information is disseminated as part of the scheduling control signaling. A scheduling control signal, e.g., a traffic transmission request signal or a traffic transmission request response signal, includes a pilot portion and a quality of service information portion. The pilot facilitates the recovery of the quality of service information by a plurality of different devices which may have different channel conditions with respect to the transmitter of the scheduling control signal. The different devices may benefit from utilizing the recovered quality of service information in making a yielding decision regarding traffic signaling in a traffic segment.

Abstract: A radio receiver apparatus calculates all frequencies to be estimated as spurious frequencies in the reception frequency band by performing addition and subtraction operations on frequencies of repeated combinations formed from frequencies of a plurality of intensive electric field station, and controls the spurious frequency not to be preset to the radio receiver apparatus even though signal intensity of a received signal having the spurious frequency exceeds a predetermined threshold.

Abstract: A radio receiver receives a broadcast signal and generates an RF signal, generates an IF signal from the RF signal, detects the electric field intensity and the frequency of the IF signal, detects the IF signal and generates a detected signal, detects the intensity of a noise signal that is a harmonic component of a digital signal that exists in a certain specific frequency band from among the detected signals, determines that the broadcast signal includes a desired analog broadcast signal when the electric field intensity of the IF signal is equal to or larger than a predetermined electric field intensity, the frequency is within a predetermined frequency range, and also the signal intensity detected by the noise signal detection unit is equal to or smaller than a predetermined value, and then performs a control to stop a search.

Abstract: Provided is a communication system using various types of random beamforming technologies. Each of terminals that belong to a user group may generate a decoding matrix, based on interference caused by a neighboring base station of a serving base station. Each of the terminals may transmit, to the serving base station or the neighboring base station, information associated with a signal-to-interference plus noise ratio (SINR) or throughput based on the decoding matrix. The serving base station may select, from the terminals, at least one target terminal to communicate with the serving base station.

Abstract: An electronic device, for example, a laptop computer includes a processor, a transceiver module, for example, a Bluetooth module and a memory. The memory includes a platform proximity agent, which may be implemented as a series of instructions, which when executed by the processor, causes the processor to receive a Bluetooth signal from a corresponding provisioned Bluetooth device, for example, a cellular telephone. Next, determine whether the received signal exceeds both a strength threshold level and a predetermined time threshold level, where the signal strength and time threshold levels are established when the laptop and a corresponding cell phone are paired during a provisioning process. When the received signal strength and duration both exceed the corresponding policy based thresholds, the laptop enters (or remains in) a full power state with full access to the monitor and the platform.

Abstract: A method and apparatus for automatic frequency control in a receiver of a wireless device, the method determining a channel estimation for a received signal; calculating a signal to noise ratio for the channel estimation; applying a weighting factor determined based on the calculated signal to noise ratio for the channel estimation to the channel estimation to create a weighted channel estimation; and supplying the weighted channel estimation to a voltage controlled oscillator.

Abstract: The techniques described increase efficiency and operation of a device operating in one or more communication systems. These embodiments provide a method for a device to perform selected scanning procedures of one or more communication systems based on the type of event detected by the device. One method includes detection of the opening or closing of the flip cover of the device and performing scanning as a result of detecting the event. Another method performs scanning in different modes such as high-scan, medium-scan and low-scan modes.

Abstract: Provided is a device and method for providing an Alternative Frequency (AF) in a wireless terminal, by which an AF channel service suitable for a user environment can be provided. To this end, the device includes a radio broadcast receiver for receiving a radio broadcast signal, and a controller for attempting an AF channel switch after an elapse of a re-try wait time which is set according to a number of recent AF channel switch failures. The controller may detect the user environment as a walking state or a driving state. If a driving state is detected, the AF channel switch is attempted immediately when receive signal quality is below a threshold, regardless of the number of recent AF channel failures. If a walking state is detected, the AF channel switch is attempted after the elapse of the wait time.

Abstract: To provide a communication terminal apparatus that efficiently transmits feedback on information regarding the reception quality and transmission form to a communication control apparatus.

Abstract: A satellite signal demodulator is configured to use frequency-based channel scanning to sense the presence of a channel and to obtain the frequency profile of the channel. Once the channel is identified and the profile is obtained, channel extraction is used to identify the frequency parameters for a given channel. A coarse parameter estimation is performed to obtain a coarse estimate of the symbol rate (SR) and the center frequency (fc) of the channel. The coarse estimation can then be followed by a fine estimation of the symbol rate and center frequency (fc), using a bit tracking loop (BTL) lock indicator.

Abstract: A method and apparatus for reducing the number of cells that must be broadcast and the number of cells that a mobile terminal must measure when different frequencies and technologies must be listed as neighboring cells.

Abstract: A method for wireless communication in a Long-Term Evolution (LTE) or LTE-equivalent environment which allows a mobile device to manage autonomous search functions (ASF) is disclosed. In an LTE-equivalent environment, a mobile device may function in several modes, including idle and connected. In either mode, the mobile device may need to use an autonomous search function (ASF) to find or exchange information with base stations. The mobile device first determines the mode the current operation pertains to. When modifying the availability of an ASF, the mobile device distinguishes between the modes that will execute the ASF. When calling an ASF, the mobile device determines the availability of that function based on the device's current mode. In idle mode, the mobile device uses the idle mode ASF. Conversely, in connected mode the mobile device uses the connected mode ASF. The two functions are distinctly managed and operated by the mobile device.