Abstract: The invention relates to a circuit arrangement in association with the RF unit of a wireless terminal, in which circuit arrangement the RF unit and the antenna (3) of the wireless terminal are fabricated/mounted on the same circuit board (1) and where the antenna (3) is connected to the RF unit through at least one signal line (2). In the circuit arrangement, the signal line (2) from the RF unit to the antenna (3) is electrically connected during the final assembly by means of a jumper (5) which is fabricated as part of a mechanical component (6) belonging to the terminal. With the arrangement according to the invention, the RF unit can be tested without interference from the antenna.

Abstract: Methods for determining delay offsets of communication systems are provided. One such method comprises: determining components of a propagation path of a base station of a communication network; determining a propagation delay associated with each of the components; and determining a delay of the propagation path using the delays of the components. Systems also are provided.

Abstract: In a wireless local area network which includes access point having variable transmitter power levels, transmitter power data is sent from the access points to the mobile units and used by the mobile units in order to provide a corresponding variation in the transmitter power of the mobile unit.

Abstract: Described is a transmission system (10) comprising a transmitter (12) for transmitting a narrowband audio signal to a receiver (14) via a transmission channel (16). The receiver (14) comprises a frequency domain bandwidth extender (18) for extending a bandwidth of the received narrowband audio signal by complementing the received narrowband audio signal with a highband extension thereof. The bandwidth extender (18) comprises an amplitude extender (24) for extending the bandwidth of an amplitude spectrum of the received narrowband audio signal by mapping narrowband amplitudes onto highband amplitudes. The bandwidth extender (18) further comprises a phase extender (26) for extending the bandwidth of a phase spectrum of the received narrowband signal and a combiner (28) for combining the extended amplitude spectrum and the extended phase spectrum into a bandwidth extended audio signal.

Abstract: A radio transceiver capable of transmitting and receiving on a common radio channel in a half duplex mode includes a direct conversion transmitter and a low IF receiver. A common signal generator (2, 2?, 2?) comprises a first and second frequency generator (40, 41). The first frequency generator generates a carrier frequency signal which is used by both the transmitter and receiver. During reception, the second frequency generator generates an offset signal at the low IF frequency which is mixed with the carrier frequency signal to form a down conversion signal. During transmission, modulation is applied either directly to the carrier frequency signal in one embodiment, or to the offset signal which is then mixed with the carrier frequency signal to form a modulated carrier frequency signal in another embodiment.

Abstract: A wireless transmit-only apparatus (20) can be comprised of a controller (21) that selectively controls which of a plurality of resonant devices (24 and 25) are utilized to influence the transmission carrier frequency of a transmitter (26). In a preferred embodiment at least one of the resonant devices comprises a mechanically resonant device (24) such as a surface acoustic wave device, a crystal resonator, or a ceramic resonator. In a preferred embodiment, a user interface (22) includes a plurality of independently assertable inputs. The controller responds to assertion of one of this inputs by selecting a particular set of characterizing transmission parameters (as are stored, for example, in a memory (23) and using those characterizing transmission parameters to transmit a message using a transmission carrier frequency as corresponds to use of a co-selected resonant device.

Abstract: A power-based hardware antenna diversity method for a wireless transceiver with multiple antennas is disclosed. The method is characterized in the steps of setting the transceiver gain at a maximum level to establish a first story of dynamic power range above a noise floor level, using a high-resolution ADC at a large back-off level relative to the noise floor to detect weak signals within the first story of the dynamic power range, switching antennas and measuring power level for each antenna during signal onset, and selecting an antenna having a largest power level.

Abstract: A relative delay between analog R.F. output signals of a plurality of digital radio transmitters in a digital radio transmitter system is controlled. At least one interface receives delay information for each transmitter. A processing unit determines the relative delay between the output signals based on the received delay information. An adjuster adjusts in the digital domain the absolute delay of at least one of the radio transmitters in accordance with the determined relative delay.

Abstract: An RF system integrated with an RF switching unit and an RF modulator unit.

Abstract: Apparatus, and an associated method, for a radio communication system having a sending station and a receiving station. The sending station sends data pursuant to a communication service and ultrawide band signals pursuant to a selected time-hopping sequence. An ultrawide band signal detector is positioned at the receiving station. The ultrawide band signal detects the ultrawide band signal transmitted thereto. Correlation is made between the detected ultrawide band signal and a locally-generated replica signal. Correlations therebetween are used to facilitate various receiving station operations, such as equalization operations upon received data, time synchronization of the receiving station to the sending station, and position determination of the positioning of the receiving station.

Abstract: A receiver includes an antenna, an impedance-matching circuit, a receive circuit, a control circuit, a digital-to-analog (D/A) converter, a mode switch, and an EEPROM. The impedance-matching circuit includes a variable-capacitance diode. The control circuit determines an operation mode set by the mode switch. It controls the D/A converter to produce different levels of the reverse bias voltage when the operation mode is set to an adjustment mode. It determines strength of receive signals based on receive signal strength indication (RSSI) signals indicating strength of the receive signals. It determines a maximum value of the RSSI signals based on the results of the determination, and stores D/A input data corresponding to the maximum value in the EEPROM as the adjustment data. It loads the adjustment data from the EEPROM and controls the D/A converter to produce a reverse bias voltage based on the adjustment data. The D/A converter applies the voltage to the variable-capacitance diode.

Abstract: Transmission loss compensation is provided for receiver circuits in general, including an ATE receiver circuit having a voltage-to-current converter, such as a transconductance amplifier, that receives a distorted DUT signal and provides an output to a current-to-voltage converter, such as a transimpedance amplifier. The compensation circuit injects a compensation current into the current-to-voltage converter to compensate for transmission losses. The compensation circuit can be configured to inject a plurality of transient compensation currents with different respective time constants and peak values.

Abstract: Calibration of a phase locked loop and applications thereof within a radio frequency integrated circuit begins by determining an intersection of an up current and down current produced by a charge pump within the phase locked loop. The RFIC then determines a reference voltage corresponding to the intersection, which varies from an ideal voltage of VDD/2 based on process variations. The RFIC then offsets a control voltage to the voltage control oscillator (VCO) of the phase locked loop based on the reference voltage. Accordingly, by determining the offset of the actual intersection from the ideal intersection, the control voltage to the VCO may be adjusted thereby calibrating the phase locked loop for more linear performance.

Abstract: The invention reduces the time required for automatically searching for channels on a device receiving channels of various widths. The invention proposes a channel detection process which carries out successive passes with frequency spacings corresponding to channels of a specific width. During each pass, only the channels corresponding to the specific width are searched for. The invention also pertains to a multichannel reception device comprising the means required for the operation of the process.

Abstract: A method for I/Q mismatch calibration of a receiver having an I/Q correction module with correction parameters, comprising the steps of generating a test signal containing a single tone waveform with frequency of a carrier frequency plus a predetermined frequency, applying I/Q demodulation to reduce the central frequency of the test signal and outputting a demodulated signal, converting the demodulated signal to a digital signal, obtaining measures of the digital signal respectively indicative of the frequency response of the digital signal at the plus and minus predetermined frequencies, and calculating the set of the correction parameters for the I/Q correction module based on the measures.

Abstract: A tunable bandpass filter is provided that comprises a first shunt-connected ferroelectric (FE) tunable tank circuit having a first node to accept an input signal. A second shunt-connected FE tunable tank circuit has a second node to supply a bandpass filtered signal. A first capacitor is connected in series between the first and second nodes. In one aspect, the first tank circuit comprises a first resonator connected to the first node, and a fourth capacitor connected between the first resonator and a reference voltage. The fourth capacitor is a tunable FE capacitor. Typically, a fifth capacitor is connected between the first node and the reference voltage. Likewise, the second tank circuit comprises a second resonator connected to the second node, and a sixth (FE) capacitor connected between the second resonator and the reference voltage. A seventh capacitor is connected between the second node and the reference voltage.

Abstract: A receiver includes a rear yoke inside a housing, a first acoustic paper bonded to an annular base of the rear yoke to block a rear open side of a tubular body of the rear yoke, an annular magnet supported on the annular base around the tubular body, a front yoke disposed at a front side of the magnet, a vibration diaphragm stretched in front of the yokes, a voice coil suspended in an annular space between the yokes, a tubular cushion fitted into the tubular body of the rear yoke, and an annular cushion (or annular step) set between the magnet and the tubular body, and a second acoustic paper covering an air hole at a rear side of the housing.

Abstract: A call is indirectly established by triggering a call register to request a mobile switching center, associated with a mobile station, to establish a call between the mobile station and a second party.

Abstract: An object of this invention is to make it possible to confirm the safety of persons who have the possibility of encountering the damage of the disaster when the disaster occurred. This system receives information of the disaster occurring region A and information of subscribers in the disaster occurring region A, and stores it in the disaster region subscriber table storage unit. Then, it transmits the disaster notice to the subscriber terminal in the disaster occurring region A. When it receives information of the position of the subscriber terminal or a voluntary safety confirmation response from the subscriber terminal in the disaster occurring region A, it judges whether the subscriber is in the safe state, and stores the judgment result in the disaster region subscriber table storage unit 45.

Abstract: An encoding system for encoding a first ancillary code in media data and monitoring for reception of a second ancillary code that has a higher priority than the first ancillary code, such that upon detection of the higher priority ancillary code the encoding system modifies a characteristic and/or characteristics of the first ancillary code.

Abstract: A method and system for correlating the performance of at least one cellular coverage area with external impact events. The method can include receiving and storing performance data for the cellular coverage area. The method can also include receiving and storing a national weather service (NWS) weather alert for a geographic area near the cellular coverage area. The weather alert indicates a severe weather condition. The method further includes extracting and storing geographic coordinates, alert type, and alert time data from the NWS weather alert, and generating an output indicative of relationships between the performance of the cellular coverage area and the severe weather condition.

Abstract: An information system and method provides information to an operator of an emergency response vehicle. A destination location and a current position of the motor vehicle are established. A planned route as a function of the destination location and the current position is established and communicated to at least one traffic control system, an alternate route is established as a function of a factor which may delay travel over the planned route, the destination location, and the new current position and a modified route plan is communicated to at least one traffic control system. The traffic control received positional data on the vehicle and controls the traffic control devices under its management to expedite the transit of the emergency vehicle.

Abstract: An information system and method provides information to an operator of a motor vehicle. A destination location and a current position of the motor vehicle are established. A planned route as a function of the destination location and the current position is established and communicated to at least one traffic control system, an alternate route is established as a function of a factor which may delay travel over the planned route, the destination location, and the new current position and a modified route plan is communicated to at least one traffic control system. The traffic control received positional data on the vehicle and controls the traffic control devices under its management to expedite the transit of the motor vehicle.

Abstract: The present invention relates to charging of communications using chargeable resources of a first communication system and a second communication system wherein at least one of said communication systems provides wireless communication services. In accordance with the method, after a set-up procedure for communications initiated a first procedure for obtaining a first charging component is triggered, the first charging component being associated with the first communication system and determined based on a first charging model. If required, a second procedure for obtaining a second charging component is also triggered, the second charging component being associated with the second communication system and determined based on a second charging model. Information associated with the communications in the first and second communication systems is processed simultaneously to obtain the respective first and second charging components. The first and second charging components are combined to obtain a total charge.

Abstract: For calls involving a wireless device on a wireless wide area network, a network entity may create an electronic record for the call that includes an indication of whether the call was established with vocoder bypass. A service provider of the wireless wide area network may then use the indications in the electronic records, at least in part, as a basis for billing a user of the wireless device. The service provider may additionally use the electronic records to generate statistics about the usage of the wireless wide area network.

Abstract: A standard communication module establishes communication with another wireless communication device via radio waves. A short distance communication module utilizes weaker radio waves than the radio waves used by the standard communication module, in order to establish communication with another wireless communication device. A communication control module activates the short distance communication module to transmit setting parameters, which are used to change settings required for communication in another wireless communication device. This arrangement effectively prevents leakage of the setting parameters to any third person who is beyond the communicable range of the short distance communication module, thus ensuring security for settings in the wireless communication device in a wireless environment.

Abstract: The procedure for transmitting SMS messages with protected identity prevents the recipient of an SMS message from seeing the caller's telephone number, and therefore the corresponding personal data, but allows him to contact the caller by sending an SMS message. During the procedure, the service manager ciphers the user's telephone number contained in the message header, and then subsequently deciphers it to restore the original telephone number.

Abstract: A method of securing the use of a mobile telecommunication terminal comprising a (U)SIM card reader includes a terminal initialization step consisting of requesting the user to enter a personal password after inserting a (U)SIM card into the terminal and storing the password in the (U)SIM card and in memory in the terminal. On the occasion of subsequent uses the password is verified either against the password stored in the card or against the password requested of the user, and operation of the terminal is disabled in the event of a mismatch. Applications include mobile telecommunication terminals.

Abstract: The present invention is related to a mobile device controlling method for changing a setting of a mobile device capable of mounting a SIM card and an IC card for settlement. According to the present invention, a step (ST1) receiving and confirming an application for a setting change of the mobile device, an e-mail address specifying step (ST4) specifying an e-mail address of the mobile device, and an e-mail creating step (ST5) creating a setting change e-mail are conducted. Then, the setting change e-mail created in the e-mail creating step is sent to the e-mail address specified in said e-mail address specifying step.

Abstract: A radio communication apparatus which can communicate with a base station in radio communication, comprising: an antenna; a reception processing unit which receives a signal transmitted from the base station via the antenna; an indication signal processing unit which processes an indication signal including information on the base station, the indication signal being transmitted from the base station periodically; and an authentication processing unit which performs authentication processing with the base station to establish communication connection between the base station and the radio communication apparatus, wherein, when the reception processing unit and the indication signal processing unit are in ON state, unitthe authentication processing unit is in OFF state.unitunit.

Abstract: The present invention aims at providing a portable radio communication apparatus in which forming of a message is easy. The portable radio communication apparatus is provided with a novel pre-message memory formed of a ROM or the like stored in which are fixed messages each consisting of fixed statements or fixed words as “CALL OFFICE AT XX:XX”. A transmitting message may be readily formed by selecting any of the fixed messages.

Abstract: Picture Caller Line Identification (PCLI) systems and methods are provided for enabling present and future mobile telephony systems to provide PCLI information to a called party. A PCLI system that interacts with a mobile telephony system includes a storage unit for storing PCLI information and a processor that is programmed to detect a request for a call from a caller to a called party, to retrieve PCLI information for the caller from the storage unit, and to forward the PCLI information to the called party. The processor may be further programmed to suspend completion of the call until verification of receipt of the call by the called handset to ensure that the PCLI information is available at the called party's handset prior to completion of the call. Mobile handsets that may be used with the PCLI system discussed above are also provided.

Abstract: A method and system provides for detecting completion of a call and responsively presenting a user of a client station with information about the call and a prompt requesting the user to categorize the call. In one embodiment, the client station can then receive from the user, in response to the prompt, a categorization of the call and can then automatically transmit from the client station to a network server, via a radio access network, a record of the call, including the categorization.

Abstract: Disclosed is a integrated wireless local loop (WLL) and wireless local area network (WLAN) transceiver apparatus which connects a wireless local loop (WLL) base station and a plurality of wireless local area network (WLAN) terminals, including a WLL transceiver in communication with a WLL base station, a WLAN transceiver in communication with a plurality of WLAN terminals, and a specialized processing device which translates communications between WLL signaling protocol and WLAN signaling protocol. The apparatus allows a plurality of wireless terminals to simultaneously access the Internet without using a dedicated line or a cable line.

Abstract: Disclosed is a handover method in a next-generation mobile communication system. When a terminal is in the idle state, an IP is reallocated according to a process of mobile IPs to perform a location registration process, and when the terminal is in the active state, it operates according to a procedure of a mobile communication network. Therefore, the terminal operates in two modes to support mobility on the IP-based networks, and it performs a handover procedure by configuring a layer below the MAC to a new AS without allocating the IP at the handover state when it is in the active state to thus minimize handover delay time.

Abstract: A system for mobile communication, based on code division multiple access includes base stations, each of which communicates with mobile stations by using a plurality of radio frequencies covering respective cells, the respective cells including a first cell covered by a first radio frequency and a second cell covered by a second radio frequency. The system further includes a base-station controller which communicates with the base stations, and controls the mobile stations to switch from the first cell of a first base station to the first cell of a second base station via a soft hand-off operation and switch between the first cell and the second cell within any base station via a hard hand-off operation, the base-station controller providing the mobile stations with no direct switch between the second cell of the first base station and the second cell of the second base station.

Abstract: A public/private communication system is provided which includes a public communication device 100, a private communication device (102) and a radio accessory extension (RAE) 200 coupled therebetween. The RAE (200) of the present invention provides audio and/or display capability which allows the public communication device to operate as a private communication accessory. Methods (300, 400 500) provide for the configuration and prioritization of private and public calls through the three devices to ensure that private calls will take priority and public calls will be received on the public communication device and handled appropriately.

Abstract: The present invention facilitates optimization of design values of system parameters in designing mobile communication system facilities. The present invention includes a criteria memory storing thresholds of a plurality of system parameters regarding designing of mobile communication facilities, a system parameter calculator for obtaining design values of the system parameters, a determiner for determining evaluation indicators of the system parameters by comparison between the design values and the thresholds, an advice table memory storing advice information corresponding to a combination of the evaluation indicators of the system parameters, a reader for searching the advice table memory and reading the advice information corresponding to the combination, and an output for outputting the read advice information.

Abstract: A wireless network node and a network provide for automatic self-deployment of the radio frequency channels without the need for preplanning. Each wireless network node adapts to the inclusion of a new node and to changing local conditions without requiring manual configuration at deployment or re-deployment. When a node is added to the network, it scans and finds its neighbors, and enters a frequency self-selection phase of its initialization process. The method for frequency self-selection involves transmitting and receiving a sequence of messages to/from neighbors and performing related processing within the controller unit of the node. Three sets of parameters are used in the frequency self-selection algorithm. The three parameter sets include a routing cost function, the frequencies in use by neighbors (and those that may be blocked), and the antenna beams used for the respective frequencies.

Abstract: In a vehicle occupant response system, a vehicle navigation system supplies a vehicle location information to a computer which formulates messages for SMS transmission by a cellular telephone device. The messages are relayed by a GSM network to an Internet server. The server identifies a user account, for example from the telephone number of the device embedded in each message. The server then runs an application which is specific to a user which may comprise sending messages containing desired information to the vehicle and making available the current location of the vehicle to a user of a personal computer.

Abstract: Described is a system and method for tracking an asset. The system may include a plurality of wireless access points and a computing arrangement communicating with the access points. The arrangement determines a location area of the device as a function of first data and a location of each of at least three access points of the plurality of the access points. The first data includes at least one of first signal strength data and second signal strength data. The first signal strength data is indicative of a strength of a first signal transmitted by the device and received by the at least three access points. The second signal strength data is indicative of a strength of a second signal transmitted by the at least three access points and received by the device. The location area is an area within a predetermined reception range of the at least three local access points.

Abstract: A system may enable vehicle operators to request information automatically along the route of travel by transmitting information requests, tied to the vehicle's current position, to a server. The server may store a plurality of informational files associated with particular global positioning system coordinates. Upon receipt of a request, the files associated with a particular position may be located and transmitted to the vehicle. The files may be stored as audio files so the user may listen to the files without being distracted while driving the vehicle.

Abstract: A SIM card for a phone has a first memory partition on which a phone user identity and phone network access data are stored. A service usage monitoring application is stored in a memory. The service usage monitoring application (a) logs information about a service used via the phone, (b) creates a service usage record for the service activity based on the information, (c) stores the service usage record in a buffer, (d) creates a reporting message containing at least one service usage data record, (e) sends the reporting message to a remote server at a preset interval based on a triggered event, and (f) purges the at least one service usage record from the buffer upon successful transmission of the reporting message.

Abstract: A telecommunication system intended for providing telecommunication services at a semiconductor manufacturing plant under the circumstances of shielded areas of clean rooms comprises a GSM base station installed at the plant and equipped with a plurality of low power antennas, a private branch exchange and at least two dedicated lines of E1 type connecting the base station and the PBX to a public switched telephone network. Software incorporated in the base station and PBX allows for telecommunication connections set up at the plant to use abbreviated four-digit numbers for both wireless mobile stations and wired stations, while keeping the possibility to reach a mobile station, even if it is outside the plant at the time of the connection, dialing the abbreviated four-digit number.

Abstract: A cordless security system that communicates through a wireless telephone network. A wireless node, having a wireless transceiver adapted to communicate wireless signals with the wireless telephone network, and a cordless transceiver adapted to communicate cordless signals with plural cordless terminal devices enables a cordless local area network. The wireless node also includes a controller that operates to couple telephone calls between the wireless transceiver and the cordless transceiver. The controller routes cordless data packets in the cordless signals through the cordless transceiver and amongst the plural cordless terminal devices. The cordless security system includes plural cordless security sensor terminal devices that communicate cordless sensor signal encoded within a cordless data packet into the cordless local area network. A cordless security control panel terminal device communicates cordless alarm signals encoded within a cordless data packet into the cordless local area network.

Abstract: A system and method for providing improved teleservice messaging to a mobile station in a wireless communication network are disclosed. In preferred embodiments, an indication is provided to a network sending entity of the maximum teleservice payload size that can be sent by the network sending entity to the mobile station via network receiving entities serving the mobile station. The payload size indication is utilized by the network sending entity to format the size of teleservice messages sent by the network sending entity to the mobile station via the network receiving entities.

Abstract: Prediction of a future state of a channel from common pilot channel signals transmitted from a transceiver (e.g., a base station) may be formed at a mobile user equipment to control future transmission patterns of the transceiver at a specified time. The matching accuracy of the future transmission patterns to the channel may be improved by adaptively calculating channel prediction terms from past and present channel estimates. Using channel prediction terms, a wireless communication system with the base station having antennas operate in a closed loop transmit diversity mode, and a channel controller application at the mobile user equipment may select best antenna transmission characteristics for active antennas of the base station.

Abstract: A remote communications terminal accesses a terrestrial network or information source via a SATCOM link with an earth station hub linked to the network or information source. Information throughput adaptation (ITA) is employed on the SATCOM link to maximize information throughput over the SATCOM link while ensuring acceptable signal quality under varying rain fading conditions. Sufficient power margin is built into the SATCOM link such that, under severe rain fading conditions, the lowest system throughput rate still provides acceptable signal quality. Under lesser rain fading conditions, the data throughput rate is increased via more bandwidth efficient modulation and coding schemes permitted by the higher signal quality which results from greater power margin. The earth station hub and remote terminals monitor the signal quality and communicate to adaptively adjust the modulation and coding used on the forward and return links to maximize information throughput under varying rain fading conditions.

Abstract: Systems and techniques for scheduling of data transmission to remote mobile units so as to provide at least an acceptably low level of delay. A scheduler computes an urgency value for each data stream serving a mobile unit and sets the urgency value equal to the highest urgency value of a data stream serving the mobile unit. The scheduler computes a scheduling priority for each mobile unit based on a computation that takes into account the urgency value of the mobile unit and schedules the highest priority mobile unit for service, selecting the highest priority data stream serving the mobile unit scheduled for transmission. The urgency value for a data stream depends on the sensitivity of the data stream to delay and the delay experienced by the data stream. Computation of the urgency value may take into account a delay limit associated with the data stream.

Abstract: The invention describes a method of controlling transmission power in a telecommunications system comprising a first and a second transceiver. In the presented method, one power control command is transmitted during at least two time-slots from the second transceiver to the first transceiver and the one power control command is received at the first transceiver during at least two time-slots.