Abstract: The present invention relates to a transmission-power control assisting apparatus, a radio apparatus, and a radio terminal apparatus. In order to stably and highly maintain service quality, the transmission-power control assisting apparatus includes: a transmission quality monitoring section monitoring an error in transmission quality of any one of a plurality of radio channels on which transmission-power control is performed; a period determining section determining a predetermined period of time from a point in time of an opportunity to append a radio channel other than the specific radio channel to the plurality of radio channels; a desired-value setting section setting a desired value for the transmission power of the specific radio channel to a value larger than such a value as to suppress the error during the period of time; and a transmission-power update requesting section notifying the desired value to a transmitting end.

Abstract: A method is disclosed for operating a mobile station (100) by determining whether there is a decreased probability of a presence of a transmitter (4) near to the mobile station that is transmitting on a frequency channel that is adjacent to a frequency channel being received from a serving cell transmitter (2) and, for a case where it is determined that there is a decreased probability of the presence of the transmitter, reducing the filter order of a baseband filter (224) of the mobile station and reducing the dynamic range of an analog to digital converter (225) of the mobile station for reducing mobile station power consumption. Reducing the filter order further beneficially reduces inter-symbol interference.

Abstract: A device and method for outer-loop power control in a discontinuous transmission mode in a CDMA mobile communication system. In an outer-loop power control method for a non-frame data transmission period of a dedicated control channel (DCCH) which transmits frame data discontinuously, the signal-to-noise ratio (SNR) of power control bits (PCBs) received at a mobile station from a base station is measured for the frame period, and it is determined whether the frame has errors based on the measured SNR. A closed-loop power control threshold is increased if a frame error exists and decreased if no frame errors exist.

Abstract: A method for mobile communication by access points in a wireless local area network (WLAN) includes transmitting a first downlink signal on a common frequency channel from a first access point to a first mobile station, at a first downlink power level, which is adjusted responsively to a first uplink power level transmitted from the first mobile station to the first access point. If the first downlink signal received at a second access point is below a predetermined interference threshold, the second access point may transmit a second downlink signal on the common frequency channel to a second mobile station, simultaneously with transmission of the first downlink signal from the first access point to the first mobile station. The capacity of the WLAN may thus be substantially increased.

Abstract: A mobile communication system controls transmission power of radio links between a base station and a mobile station. The mobile communication system comprises (a) assigning forward and reverse dedicated control channels to the base station and the mobile station, respectively, and controlling transmission power of the forward and reverse dedicated control channels so that the respective channels can receive data; (b) discontinuing the transmission power control, when data to transmit/receive is not generated for a predetermined time; and ĉ for power level arbitration, re-controlling the transmission power of the forward and reverse dedicated control channels in a state where the transmission power control is not performed, so as to adjust the transmission power with which the data can be received.

Abstract: A receiver (10) for a wireless telecommunications system that provides relatively wideband signal processing of received signals without increased signal distortion so that multiple received signals can be simultaneously processed. The receiver (10) includes a specialized LNA (16), frequency down-converter (18) and ADC (20) to perform the wideband signal processing while maintaining receiver performance. The frequency down-converter (18) employs a suitable mixer (28), BPA (32), attenuator (34), and transformer (36) that are tuned to provide the desired frequency down-conversion and amplitude control over the desired wideband. The down-converter devices are selected depending on the particular performance criteria of the ADC (20). A specialized digital channelizer (22) is included in the receiver (10) that receives the digital signal from the ADC (20), and separates the signals into the multiple channels.

Abstract: If position detection is performed correctly, connection switch 161 is connected through a control signal and transmit power control circuit 162 carries out transmit power control based on reception power of a signal combining direct wave signals and delay wave signals. If position detection is not performed correctly, connection switch 161 is disconnected through a control signal and transmit power control circuit 162 performs transmit power control only based on reception power of the direct wave signals. Thus, it is possible to make reliable position detection compatible with reduction of interference in reception processing of signals of other stations.

Abstract: The present invention is directed to a method and to a system for regulating the transmission power of a mobile station (2) of a mobile radiotelephone system in which information are transmitted in various carrier frequencies with a frequency hopping method. The fixed station (1) comprises a receiver (4) for receiving information that are transmitted from a mobile station (2). The fixed station (1) also comprises a detector (11) for detecting the transmission quality of the transmitted information. When the transmission quality is good and the information were transmitted with a high transmission power, a first message for lowering the transmission power is sent to the mobile station and, when the transmission quality is poor and the information were transmitted with a low transmission power, a second message for raising the transmission power is sent to the mobile station. The present invention serves the purpose of lowering the power consumption in a mobile station of a mobile radiotelephone system.

Abstract: A portable electronic device includes a transmitting circuit, an X-ray detector, and a controller. The transmitting circuit includes a power amplifier for amplifying radio waves. The detector is arranged to detect X-rays radiated from an installation arranged on a passageway to an area where radiation of electromagnetic waves is restricted. When X-rays with a certain intensity or more are detected by the detector, a controller recognizes that the device is about to enter the area, and reduce the gain of the power amplifier, so that the transmitting circuit is set to be unable to radiate radio waves.

Abstract: A demodulator (10) converts television signals to video baseband signals and audio baseband signals including stereo signals representing a right channel signal value, a left channel signal value and a pilot signal having an amplitude. A DSP (60) recursively finds a coefficient value for scaling that keeps the pilot signal amplitude within a range of values, there by improving baseband signal quality, such as stereo separation of stereo signals within the baseband signals.

Abstract: A wireless terminal for performing wireless communication with a wireless base station, comprising: a wireless mode selection unit which selects all combinations between modulation/demodulation schemes and error correction schemes capable of performing wireless communication of predetermined quality with the wireless base station; a wireless mode storage unit which stores all combination information selected by the wireless mode selection unit; and a wireless communication process unit which transmits a specific wireless signal including all combination information between the modulation/demodulation schemes and the error correction schemes stored in the wireless mode storage unit, and a service quality identifier representing quality of a wireless communication service in the case of performing wireless communication with the wireless base station, to the wireless base station.

Abstract: A wireless communication apparatus in a wireless communication system transmits power-control information on a power-control channel, separate from the traffic channels of the wireless communication system. In a code division multiple access system, the power-control channel has a separate spreading code. The power-control channel provides a steady flow of power-control information, even when traffic channels are used only intermittently.

Abstract: The invention is a radio inside a vehicle providing each of the multiple drivers to automatically pre-set her radio adjustment settings for subsequent use. In the case of a “family car” where parents and young adults in the family share a car, the radio adjustment preferences (e.g., volume, bass, treble, etc.) for each driver are likely to be different. The more drivers there are to this “family car”, the more difficult it becomes for each driver to enjoy the comfort this radio affords because of the speaker adjustments required every time one turns on the radio.

Abstract: A method for aligning an antenna polarization axes of a dual polarized end-user terminal having an antenna. The antenna is aligned with a satellite in relation to azimuth and elevation. The end-user terminal is configured in an alignment mode to produce a first output corresponding to a first component of a received signal parallel to a first polarization axis of the antenna and a second output corresponding to a second component of the received signal parallel to a second polarization axis of the antenna. The first polarization axis is orthogonal to the second polarization axis. The method includes the steps of: receiving a linearly polarized signal; autocorrelating the first output and the second output to produce a measurement of autocorrelation; and adjusting the antenna polarization axes to minimize the measurement of autocorrelation.

Abstract: A mobile station in a mobile communications system directs a base station to raise a transmission power using identification data, when a reception quality measured by the mobile station is lower than a desired reception quality. The mobile station also directs the base station to lower the transmission power using identification data, when the reception quality measured by the mobile station is higher than the desired reception quality.

Abstract: In a timer recording system, contents for a timer recording processing for requested TV program is transmitted to a timer recording management server by a mobile phone, then the timer recording management server commands to a video tape recorder to execute the timer recording operation. The video tape recorder executes such timer recording processing, and when the timer recording processing ends, the video tape recorder reports the processing result to the mobile phone, thereby the user is able to confirm the setting of the timer recording to the video tape recorder that is not directly operated by the user. The present invention may be used for an electronic apparatus such as a tape recorder, a VTR, or an air conditioner. When the user is not able to directly operate the electronic apparatus at home while the user is go out from home, the user is able to control and to confirm the operation of the electronic apparatus.

Abstract: A power control system method for controlling the downlink (DL) transmit power from a base station (BS) to a mobile station (MS) in a cellular telecommunications network. A power balancing value &Dgr;P is divided into a number of smaller correction implements which are distributed over a plurality of spaced apart slots for DL power control. For example, if it is desired to correct DL transmit power by six dB, a total of six different correction values of one dB each may be implemented with adjacent ones of the correction values being spaced apart by a number of slots. The distribution or spreading of DL transmit power corrections over a period of time results in a plurality of smaller corrections as opposed to one or a few large corrections, thereby reducing potential adverse effects on the inner loop power control of the network.

Abstract: A radio broadcasting system, a transmitter and a receiver for use in such a system, a radio broadcasting method and a radio broadcasting signal.

Abstract: A method and apparatus for generating an autonomous Pilot Strength Measurement Message (PSMM) by a mobile station traveling in a multi-carrier wireless communication system. In a multi-carrier system, the mobile station receives the pilot channel of a base station on multiple carrier frequencies simultaneously. Fading may vary from carrier frequency to carrier frequency. New pilot strength definitions are used by the mobile station in a set of rules transmitted by the base station. The set of rules determines autonomous generation and transmission of PSMMs by the mobile station upon detection of pilots.

Abstract: In a base station for use in a CDMA open loop control reverse channel interference correcting system for carrying out correction of a reverse channel interference, a base receiver receives a reverse transmission signal as a reverse received signal and measures received powers of the reverse received signal to produce measured received power values. An average power calculating section calculates an average of the measured received power values to produce a calculated average value. On the basis of the calculated average value and a reference value, a correction value calculating section calculates a correction value for making a mobile station increase a current transmission power so as to become larger than a previous transmission power. A transmitting section transmits information indicative of the correction value to the mobile station.

Abstract: In radio transmission systems with point-to-point and point-to-multipoint topology a master station and one or several terminal stations are defined as well as a downstream channel from the master station to the terminal stations and an upstream channel from the terminal stations to the master station. In such systems, in order to send traffic to several terminal stations, the downstream channel is used by the master station in time division multiplexing.

Abstract: An analog bias current optimization circuitry in a transceiver of a data communication system is capable of controlling the amount of a bias current of each of analog circuits. The analog bias current optimization circuitry generates a signal pattern which is sent to the analog circuits, such as TX-D/A converter, driver, RX-A/D converter, etc., and evaluates the signal quality of the analog circuits. Based on the evaluated signal quality, a bias current to each of the analog circuits is adjusted. A margin may be added to the bias current to ensure the signal quality in case there is a change in power supply voltage and/or temperature. One method of evaluating the signal quality of the analog circuits is to evaluate the residual echo of the output of an echo canceller (EC). Another method is to evaluate a signal error in a decision feedback equalizer (DFE). A further method is to evaluate a harmonic distortion at the output of a filter.

Abstract: In an impedance matching circuit for a multi-band radio frequency device, a first radio frequency signal in a first sub-band of a multi-band radio frequency signal is selectively outputted. Further, a second radio frequency signal in a second sub-band of the multi-band radio frequency signal is selectively outputted. Selective outputting is done through partly shared and partly non-shared reactive elements, without the need to switch reactive elements.

Abstract: A method and apparatus for improving loop stability and speed of a power control loop. Adjacent channel interference in the ramp-up and ramp-down (transient) of a TDMA burst is reduced. The present invention is used in a burst when the transient response and loop speed are important in the design of the control loop. The loop bandwidth variation resulting from linear conversion power detector and PIN diode RF attenuators in the loop is reduced by reducing the upper end of the loop bandwidth and increasing the lower end of the loop bandwidth. The upper limit of the loop bandwidth determines the loop stability and the lower limit of the loop bandwidth determines the minimum speed of the loop. A reference signal is sampled and processed to set a gain of a feedback loop in the power control loop.

Abstract: An appliance control system of the present invention comprises an appliance and a mobile computing device configured for controlling the appliance by at least one of determining an available content for the appliance, selecting the content used by the appliance, and applying user preferences to the appliance.

Abstract: A method for controlling an appliance includes identifying with a mobile computing device the unrecognized appliance and automatically applying a user preference to the unrecognized appliance.

Abstract: The invention concerns a method and a system for assessing the quality of a broadcast digital signal. A reference signal (sref) is generated (1001) from an initial signal (so) and jointly broadcast (1002) with a digital signal (sn). At reception level, the broadcast digital signal and reference signal received (snr, sref) are synchronized (2001) and a value D of the distance between the reference signal and the digital signal (snr, sref) is computed (2002) for assigning (2003) a quality value Q. The invention is applicable to the broadcast of audio and/or video digital signals.

Abstract: A method for improving performances of a mobile radiocommunication system using a power control algorithm for controlling a transmit power according to a transmission quality target value, and an adjustment algorithm for adjusting the transmission quality target value according to transmission requirements, the method including, upon the occurrence of a change in the transmission requirements, bypassing the adjustment algorithm, by applying a corresponding change to the transmission quality target value, so as to adjust it in an anticipated way.

Abstract: Communication device of the portable terminal receives a function changing program. Function changing device is realized by executing the function changing program A cooperation device of the controlled apparatus controls the controlled apparatus by operating in cooperation with the function changing program on the portable terminal. With such a construction, the portable terminal can be used as a pointing device of the controlled apparatus.

Abstract: During formation of an ad hoc group, the transmit power level of a user device within a wireless communication network is reduced. Potential group members are thus identified within an immediate vicinity of the user device.

Abstract: A radio broadcasting system, transmitter, receiver, method and signal are provided wherein a program signal is combined with a data signal. According to the invention the data signal not only includes information on an indicated program signal, but also data of a data service and information on the data service, such as an identification of the data service, alternative frequencies, information on related data services etc. In this way it is possible to broadcast the data service on a network differing from the network broadcasting the program signal. This is of particular use in the Radio Data System.

Abstract: In a communication network based on the TIA/EIA/IS-856 standard, or in other network types where forward link power control is desirable but where no reverse link channel or sub-channel to direct such power control is available, forward link rate request information from an access terminal may be used to infer carrier-to-interference (C/I) ratios at the access terminal. Such information allows the network to control power for the forward link channel of interest. In a TIA/EIA/IS-856 setting, the network uses DRC channel information from the access terminal to set RPC channel power transmitted to the access terminal from one or more sectors in the network. That is, radio base stations within the network may determine C/I or like values for active access terminals using DRC channel information from those terminals and calculated needed RPC channel power accordingly. This process may be extended to include access control procedures.

Abstract: Techniques for processing incoming signals conforming to a plurality of standards or communication formats with a single baseband receive section are disclosed. In one aspect, a plurality of analog processing components are adjusted in response to a format select signal, set according to one of a plurality of supported formats or standards. In another aspect, the operating mode of an A/D converter is tuned in response to the format select signalIn yet another aspect, the response characteristics of a jammer filter are tuned in response to the format select signal. In yet another aspect, the adjustment of the plurality of analog processing components is carried out by varying the frequency of a sample clock in response to the format select signal. Various other aspects are also presented. These aspects have the benefit of allowing a single baseband receive section to be deployed to process analog signals conforming to a plurality of communications standards or formats, in a power and area efficient manner.

Abstract: An audio system has a playing circuit for generating an audio signal, at least a speaker electrically connected to the playing circuit for playing sound according to the audio signal, a detector for detecting a communication signal of mobile phones or automobile phones and generating a corresponding mute signal, and a mute circuit electrically connected to the detector and the playing circuit for receiving the mute signal. The mute circuit stops the speaker from playing sound after the mute circuit receives the mute signal.

Abstract: An apparatus for combining retransmitted data comprises a buffer for storing received data unfavorably received of received data received by a radio receiver and converted to a base band, a combiner for combining the received data stored in the buffer with retransmitted received data, and a demodulator for demodulating the combined data combined by the combiner, wherein the demodulation is performed after combining the received data stored in the buffer with the retransmitted received data.

Abstract: In a method and an apparatus of transmitting a burst signal when the burst signal is transmitted from a transmitting station to a receiving station at a transmission power value and/or a transmission rate determined in accordance with a state of a radio channel between the transmitting and receiving station in a mobile communication system, based on a comparison result between a criterion predetermined according to a state of the radio channel and/or a transmission waiting state of the signal, whether or not the burst signal is to be transmitted is determined, and, when it is determined that the burst signal is to be transmitted, the burst signal is transmitted from the transmitting station to the receiving station.

Abstract: The present invention pertains to an apparatus and method for automatically disabling cell phone ringing and/or cell phone beeping. An RF transmitter is used to transmit an RF non-audible mode or control signal. Upon receiving the non-audible mode or control signal, the cell phone and/or beeper automatically disables its audible alarm. Users are notified of incoming calls and/or pages by means of blinking lights or vibration. When the user no longer receives the non-audible mode or control signal or upon the elapse of a fixed, pre-determined amount of time, the cell phone and/or beeper automatically reverts back to its normal mode of operation whereby incoming calls and pages are indicated by cell phone ringing and pager beeping.

Abstract: A receiving apparatus that is equipped with a decoder that performs equalization and error correction simultaneously, as with a UDMV, for example, and enables burst errors to be corrected and demodulated data error rate characteristics to be improved even when there is fading that causes burst errors in a channel, and a transmitting apparatus that performs data transmission to this receiving apparatus. A transmitting apparatus 100 distributes transmit data to a plurality of carriers of difference frequencies and transmits the transmit data as a plurality of sequences differentiated by frequency. A receiving apparatus 150 performs maximal-ratio-combining of received signals in a combiner 153, performs equalization and Viterbi decoding simultaneously with a UDMV 154, and obtains demodulated data.

Abstract: The present invention provides a method for determining whether to wake up a mobile station. The mobile station includes first configuration parameters relating to a base station. The method includes the steps of receiving a configuration change indicator at the mobile station. The configuration change indicator is indicative that the first configuration parameters relating to the base station are different than second configuration parameters that currently relate to the base station. The method further includes waking up the mobile station to receive the second configuration parameters.

Abstract: A mobile station is configured to measure receiving qualities of respective signals from a first antenna and a second antenna of a base station (S3, S5), store the results of the measurement, and request the base station to retransmit a signal from an antenna with a higher receiving quality, based on the stored measurement results, when an error is detected in received data thereafter (S10, S11, S12). The base station retransmits the data, using the antenna with the higher receiving quality (i.e., a base station antenna to yield the higher receiving quality at the mobile station) (S15). In another aspect, the mobile station measures a receiving quality of a signal and notifies the base station of the receiving quality. The base station selects a radio channel adapted to a receiving quality on the basis of the measurement result and transmits a signal, using the radio channel.

Abstract: A data communications system including a local beacon (10; 9, 9′), on the one side being programmable and/or communicating with controlling and/or information communicating infrastructure means (16), for example a central service provider or the Internet and/or with one or more further local beacons and which, on the other side, contains for wireless communication with one or more end devices (17) located in its vicinity a transceiver combination or in special cases a transmitter only and which is located in or in place of a electric lighting equipment (1) is characterized in accordance with the invention in that the local beacon is provided with a smart cache and/or processing functionality for the data to be communicated wireless. The data communications system in accordance with the invention can be put to use for both communication and navigation by end device users.

Abstract: In a radio communication method such as W-CDMA, additive information of each current frame transmitted and received between a group of base stations 2, 4 and 6 and a mobile station 8 is added to a preceding frame precedent to the current frame by one frame and is sent before the current frame. On a receiving end, demodulation characteristics for the current frame corresponding to the additive information, which is added to the preceding frame and is sent before the current frame, is controlled and adjusted in advance according to the additive information, the current frame sent at a next time is demodulated according to the demodulation characteristics controlled and adjusted, and communication quality of frames transmitted and received between the group of base stations 2, 4 and 6 and the mobile station 8 is improved.

Abstract: In a CDMA system, forward link load measurements and mobile station channel measurements are provided to the base station controller to allow the controller to jointly select the initial traffic channel transmit power and data rate. A mobile station reports a received pilot channel signal-to-noise ratio for all base stations in sight to a base station controller. The base stations report a current forward link load estimate to the base station controller. The base station controller sets a number of traffic channel connections and a traffic channel data rate to be allocated for the traffic channel connections, and sets a target traffic channel signal-to-noise ratio based on the data rate and the number of traffic channel connections.

Abstract: A method and system for performing power control in a mobile communication network comprising at least one base station and a network element connected to the base station, wherein a reliability information is transmitted from the at least one base station to the network element, the reliability information defining a quality of a radio transmission between the at least one base station and a mobile terminal. Based on the transmitted reliability information, the network element determines a variation of a target setpoint for power control and transmits a power control command defining the variation of the target setpoint to the at least one base station. Thereby, a bearer specific controlling procedure can be performed and the signaling of the procedure can be done via the user plane. This implementation provides an outer loop power control having the necessary flexibility to adapt its parameters to the bearer characteristic of an actual connection.

Abstract: The invention relates to a method and an apparatus for remotely controlling devices, more particularly to a system and method for controlling locomotives in a railway environment using radio frequency signals. This invention makes use of equalized pseudo-random transmission intervals obtained using a random number generator to regulate the times at which the signals are sent from a transmitter to a receiver. The use of these randomly generated transmission intervals allows eliminating the requirement of having an operator manage these intervals for transmitters in simultaneous operation. The invention also provides communication systems operating concurrently with substantially uniform response times by constraining the values of the transmission intervals to lie within a given range.

Abstract: Methods and apparatus are provided for optimizing a receive side subsystem of a cellular communication system with a transmit side subsystem of the system. The receive side subsystem includes one or more superconducting components, preferably a superconducting filter, coupled to an amplifier, preferably a low noise amplifier. The transmit side subsystem includes a transmitter and, preferably, a power amplifier. The system matches and balances the range or radius of the received side subsystem with the range or radius of the transmit side subsystem. As a result, the receive range and the transmit range of the system overlap. A control system configured to match and balance the subsystems is optionally provided.

Abstract: Method for calibrating a motor vehicle hands-free access system comprising a control unit (UC) with an emitting antenna (AE) and an antenna controller (PA), consists in:

Abstract: The present invention relates to methods and means for determining handovers in a cellular radio communication system. Power-budgets for a serving and a target cell are calculated (301,302). A ranking value for both cells is determined from the power-budgets (306,307). A new ranking value for the target cell is calculated (309) by adding a specific adjustment value, dependent on the BER in the serving cell and the target cell and derived from a communication-quality table, to the ranking value of the target cell. A handover is performed if the new ranking value exceeds the ranking value of the serving cell.

Abstract: A system, method, and computer program product for reducing power consumption in remote communications, wherein a system transceiver transmits in a system transceiver message a count value and modulated communication data, and a remote transceiver polls for the count value indicative of a scheduled broadcast time for broadcast of the modulated communication data. The remote transceiver conserves power during a time period prior to the scheduled broadcast time and synchronizes an on-time of the remote transceiver with the scheduled broadcast time of the system transceiver. The remote transceiver conserves power both by polling rather than continuously listening and by entering a low-power sleep period for a time period prior to the scheduled broadcast time.

Abstract: A comprehensive system and method for uplink power control in a satellite communication system is provided. The energy of uplink signals received by a satellite from a terminal is compared to an energy threshold. The reference power level of the uplink signals is then adjusted based on the comparison of the received energy with the threshold. Preferably, the energy comparison is accomplished using synchronization bursts. Threshold leveling is then used to determine adjustments to the thresholds used in the energy comparison and the power offsets used in determining the transmission power for uplink signals. If the error rate is derived from the same type of digital coding used for transmitting synchronization bursts, the power threshold is adjusted. If the error rate is derived from a different type of digital coding than is used for transmitting synchronization bursts, a power offset is adjusted.