Abstract: At the transmitter side, carrier waves are modulated according to an input signal for producing relevant signal points in a signal space diagram. The input signal is divided into, two, first and second, data streams. The signal points are divided into signal point groups to which data of the first data stream are assigned. Also, data of the second data stream are assigned to the signal points of each signal point group. A difference in the transmission error rate between first and second data streams is developed by shifting the signal points to other positions in the space diagram expressed at least in the polar coordinate system. At the receiver side, the first and/or second data streams can be reconstructed from a received signal. In TV broadcast service, a TV signal is divided by a transmitter into, low and high, frequency band components which are designated as a first and a second data streams respectively.

Abstract: In some embodiments of the present invention, multiple voltage controlled capacitor branches may be employed in a tuning circuit. Each of the multiple voltage controlled capacitors branches may be set to somewhat apart resonance frequency so that a composite resonance derivative curve forms an equi-ripple curve with an improved tuning sensitivity linearization.

Abstract: An apparatus, system, method and computer program product for digital beamforming in the IF domain. The beamforming technique of the present invention can be implemented in general point-to-multipoint wireless networks to significantly increase bandwidth in both the downlink and uplink directions. This beamforming technique allows for a modular design of a smart antenna system which typically includes an antenna array, a multiple number of transceivers, IF beamformers, and a set of modems.

Abstract: A high frequency device includes a transmission/reception amplifier 13 that amplifies and outputs an input signal, and a transmission/reception switch 2 that gang switches internally so that during transmission an input of the transmission/reception amplifier 13 is connected to an up mixer and an output of the transmission/reception amplifier 13 is connected to an antenna unit 5, and so that during reception the output of the transmission/reception amplifier 13 is connected to a down mixer and the input of the transmission/reception amplifier 13 is connected to the antenna unit 5.

Abstract: An analog cordless telephone has a handset and a base. The handset and/or the base of the telephone may include the following components. A phase locked loop (PLL) and a voltage controlled oscillator (VCO), adapted to be shared between a receive path and a transmit path. A first analog gate is adapted to gate a received audio signal on and off, in response to a clock signal. A second analog gate is adapted to gate a transmit audio signal on and off, in response to an inverted version of the clock signal. The transmit audio signal is enabled when the received audio signal is gated off, and the VCO is further adapted to be modulated by the enabled transmit audio signal to output a modulated RF signal.

Abstract: A radio device requires a tunable transceiver such that the transceiver can be accurately set to a desired frequency. When a signal with known frequency accuracy is being received, an offset detector can determine the frequency offset generated by the transceiver due to improper tuning. An automatic frequency control (AFC) system (100) is comprised of a tunable transceiver, an adaptive detector (102) for comparing an incoming sample from the tunable transceiver to an adaptive maximum deviation threshold for determining if a sample from the tunable transceiver should be used for the direct current (DC) component of the AFC, an offset detector (103) and an AFC control processor (105) for utilizing information from the offset detector to reduce the inaccuracy in frequency by tuning the transceiver towards the received signal frequency. The AFC control processor (105) utilizes one of more threshold levels for defining a maximum correction threshold (311) based upon the desired maximum offset correction.

Abstract: The present invention provides a phase-error suppressor for use with a plurality of transistors having a common source coupled to a current generator that receives signals at a frequency. In one embodiment, the phase-error suppressor includes an inductor, coupled between the common source and the current generator, that resonates proportionally to the frequency with a first capacitance associated with the plurality of transistors. In one embodiment, the inductor resonates at about twice the frequency wherein input phase error is suppressed at output.

Abstract: A system and method for providing a highly efficient linear transmitter compatible with a radio capable of operating in one of several modes. In a normal mode of operation, the radio frequency power amplifier (RFPA) runs in envelope tracking mode. Accordingly, the RFPA supply voltage follows the envelope of the linear modulation. In an alternate mode of operation, the supply modulator is locked to a fixed DC voltage. A high efficiency level is maintained in both the normal mode and the alternate mode by using a single agile DC-DC converter to supply the RFPA. The converter input voltage is switched depending on the mode of operation.

Abstract: A wireless system, which minimizes nulls within the wireless system, while simultaneously providing diversity. A wireless system will now have increased capacity and coverage due to an enhanced signal to interference ratio in the areas of beam overlap. The system uses time or frequency offset on the signals input to an antenna to minimize interference in the regions of beam overlap. Additionally, polarization diversity can be introduced using Butler Matrices in conjunction with array elements to enhance the interference reduction.

Abstract: Several versions of the radio signal are transmitted with different polarizations from a first station to a second station. The respective transmission powers of these versions of the radio signal are adaptively controlled according to measurements carried out by the first station on signals transmitted by the second station.

Abstract: A wireless data communication unit (700) shares a data communication resource with a plurality of other data communication units. The wireless data communication unit (700) receives channel status information from a wireless serving communication unit on an outbound channel (100) and transmits data to the wireless serving communication unit on an inbound channel. The wireless communication unit includes a processor (708) for monitoring channel status symbols inserted on the outbound channel, such that the processor (708) regulates time intervals between successive data transmissions (480) on the inbound channel dependent upon the monitored channel status symbols inserted on the outbound channel. A method of sharing a communication resource is also described.

Abstract: A remote controller includes a plurality of keys, which are operated to transmit infrared signals different for each key. A receiving device executes different kinds of operations based on the kind of signal received from the remote controller. The receiving device can change the correspondence between the kind of signal received from the remote controller and the kind of operation to be executed.

Abstract: The method and apparatus herein identifies tunable duplexer in a communication system. The tunable duplexer includes a tunable receiver filter, a tunable transmitter filter, a variable receiver phase shifter, and variable transmitter phase shifter. Each filter and phase shifter is optimized based on characteristics of impedance within the duplexer. The duplexer may be adjusted to changing environments or desired changes in the frequency of operation, reducing circuitry architecture and providing greater flexibility in communication function. The method commences by tuning tunable filters within the duplexer and then optimizing phase shifters within the duplexer for adjusting impedance matching with antenna and isolating the receiver from the transmitter during duplexing operations. Optimizations and calibration may be performed during manufacture, upon initialization of the system, or during operation of the communication device.

Abstract: A dual polarization transmission receiving system includes a reception unit including two RF local oscillators and a demodulation unit. The local oscillators receive signals transmitted by using two orthogonal polarized waves (V and H polarized waves) and convert the respective received signals into IF (Immediate Frequency) signals. The demodulation unit branches each IF signal into two paths, and then demodulates the respective IF signals for each polarized wave by a digital coherent detection scheme.

Abstract: A method and apparatus that includes a scanner for that scans a frequency range, a receiver that detects a frequency within the range, a processing unit for determining the field strength of the frequency and a display for indicating the field strength.

Abstract: A system and method of improving the rejection of intermodulation (IM) distortion in receivers (100) employing varactor tuning preselecters by exploiting the attenuating properties of a tunable preselecter at specific voltages. The invention takes advantage of a first preselecter (101) and a second preselecter (105) already present in existing receiver circuits enabling them to provide attenuation to incoming radio frequency (RF) signals. This enables the receiver to better operate without the burden of interference and without the need to retrofit the receiver with added attenuator circuitry.

Abstract: A high-frequency module constituted by an integral laminate for handling a plurality of transmitting/receiving systems having different passbands comprises (a) a switch module part for branching higher-frequency signals and lower-frequency signals and switching connection to the transmitting systems and the receiving systems, (b) a high-frequency amplifying circuit module part, and (c) a phase-adjusting circuit disposed between the switch module part and the high-frequency amplifying circuit module part, wherein the phase matching between the switch module part and the high-frequency amplifying circuit module part via the phase-adjusting circuit is adjusted to conjugate matching in a fundamental frequency band, while it is adjusted in a nonconjugate matching range in n-th frequency bands, wherein n is an integer of 2 or more.

Abstract: Intermodulation products in the amplifier circuitry of a communications device are cancelled. A primary carrier is processed in a first main branch of amplifier circuit. The primary carrier is coupled to a secondary branch through a first signal splifter. Intermodulation products are created from a portion of the primary carrier coupled through the secondary branch. The intermodulation products are then coupled back into the main branch to produce an output signal provided to a transmitter.

Abstract: A method for receiving radio frequency signals transmitted by a radio signal transmitter with an access point includes using a plurality of antennas to receive radio signals transmitted by the radio signal transmitter and from other directions via reflection during a predetermined period of time, and using the processor to sum up radio signals received by the plurality of antennas during the predetermined period of time to obtain a summation of radio signals transmitted directly from the radio signal transmitter to the access point and of radio signals transmitted via reflection from the radio signal transmitter to the access point.

Abstract: A multiple band transmitter including first and second transmit amplifier paths, where the first transmit amplifier path conducts a first transmit signal at a first frequency band and the second transmit amplifier path conducts a second transmit signal at a second frequency band. The second transmit amplifier path includes an amplifier that generates the second transmit signal along with a harmonic frequency within a passband of the first transmit amplifier path. The second transmit amplifier path further includes a trap circuit that shunts the harmonic frequency away from the first transmit amplifier path.

Abstract: A satellite broadcast reception converter, having a simple structure, capable of reducing an output return loss even if a circuit board is relatively smaller than a chassis is provided.

Abstract: A zero intermediate frequency (ZIF) radio frequency (RF) digital mixer (200) includes a low noise amplifier (LNA) (203), a first RF mixer stage (205) for mixing an RF signal from the at least one LNA with a first local oscillator signal operating a first predetermined frequency. A second RF mixer stage (207) is then utilized for mixing in-phase (I) and quadrature (Q) digital signals from the first RF mixer stage (205) with a plurality of second local oscillator signals (LO) operating at a second predetermined frequency. The invention significantly improves current drain by eliminating the need for a linear transconductance stage while still maintaining high degrees of isolation and linearity.

Abstract: The invention relates to a direct conversion receiver for down-converting a received multi-carrier signal comprising at least a first and a second carrier signal at image carrier frequencies to a base band resulting in that the first carrier signal includes an image signal of said second carrier signal. Further, the known direct conversion receiver comprises at least a first and a second digital down-converter unit for separating the first and the second carrier signal from the down-converted multi-carrier signal after digitization. In order to make such receivers less complex and adjust them for fast time varying szenarios it is proposed to provide an error estimating unit to said receivers for calculating a compensating coefficient representing the quota and/or the phase position of the image signal of the second carrier signal being included in the first carrier signal and to remove the undesired image signal in response to said compensating coefficient.

Abstract: Portable radiotelephone including a central processing unit, a transmit and receive radio circuit connected to at least one antenna, a microphone emerging upwards when the radiotelephone is worn by means of a necklace, a speaker and a keypad that includes at least one multifunction key.

Abstract: Method and system for controlling access to a platform for a mobile terminal for a wireless telecommunications system or for another product. The system includes a platform having a software services component and an interface component having at least one interface for providing access to the software services component for enabling application domain software to be installed, loaded, and run in the platform. An access controller controls access to the software services component by the application domain software via the at least one interface. The access controller includes an interception module for receiving a request from the application domain software to access the software services component, and a security access manager for determining if the permission request should be granted. The application domain software is granted access to the software services component via the at least one interface if the permission request is granted by the security access manager.

Abstract: Terminals and base stations belonging to service areas 100 to 102 of plural radio operators periodically measure a radio-link quality and an availability ratio of a radio link to notify them to a radio-resource management server 40. The server 40 alters a frequency of the base station, and a transmitted-power quantity of the base station and the terminal based on these measured results to improve the radio-link quality, and reduces interference with a neighboring radio system. When a load is concentrated on a network of a specific radio operator, an instruction of handover is given to the terminal from the server 40 to realize a load distribution within the radio operator, and between the radio operators.

Abstract: A system, apparatus, method and computer program product to obtain comprehensive vehicle radio listener statistics based on parameters such as radio status (e.g., on/off status and CD/Tape/AM/FM setting), radio volume, station preset information, current frequency setting (i.e., station identification), and Global Positioning Satellite (GPS) system coordinates is disclosed. A vehicle-mounted field unit for collecting and transmitting such parameters to a base station is also disclosed. The system monitors and stores all events related to the occupants' interaction with the vehicle's radio, including automatic detection of the selected radio station through a speaker port. The stored data is then transmitted to a base station's central collection computer for immediate compilation and analysis.

Abstract: A communications system and method for handling a call to the system based on whether the caller is a subscriber. In one example, in an information assistance service communications system, if the user is a subscriber, the call may be directed to a first operator device for directory assistance, while if the caller is a non-subscriber, the call may be directed to a special operator device discuss billing and subscription options, for example. In another communications system and method, calls to the system by subscribers are handled based on the status of parameters of the calling subscriber's account, such as usage limits and expiration date of the caller's subscription, for example. In another communications system and method, expiration dates are monitored and notices about the expiration dates are sent to subscribers by a method chosen by the subscriber. Features of these systems and methods may be used together or separately.

Abstract: The invention provides a charging method for a communications service in a cellular communications system, especially for a prepaid communications service. A prepaid service processing node (PSPN) processes a communications service. A prepayment support node information (PI) is received from a subscriber profile database (SPD). A prepayment support node address (PA) is determined from the prepayment support node information (PI). The determined prepayment support node address (PA) is stored. A request for the communications service to be charged on a subscriber's prepayment account is detected, and a credit information request is sent to a prepayment support node (PPSC) identified by the stored prepayment support node address (PA). A credit information is received, and the requested communications service is processed according to the credit information. The invention provides a device for said charging as well.

Abstract: The present invention provides a mobile communication system and method for inactivating or curing mobile communication viruses. The mobile communication system for inactivating a virus includes: a database associated with the mobile communication system, for storing at least one virus vaccine program; and a virus monitoring unit associated with the mobile communication system, for checking virus infection of received data, analyzing virus information, choosing one of virus vaccine programs that are stored in the database and inactivating the virus. Virus vaccine programs are timely updated over the air (OTA) whenever a new version of vaccine program is available.

Abstract: A system and method to securely create, distribute, install and execute selected features of software on wireless devices combines three different types of licenses, a validation license, a digital rights management (DRM) license, and a feature license with a software application. Each of these three licenses work independent of each other, where the validation license helps prevent malicious code from executing on wireless devices, the DRM license prevents unauthorized copying of the software application and the feature license securely enables or disables specific features of the software application. The system also allows a wireless device to unwrap a DRM protected software application, to validate the software application, to enforce DRM usage rules and to execute selected features of the software application.

Abstract: The described techniques automatically change the notification mode used by a mobile communications device to alert a user of an incoming communication to the mobile communications device. The notification mode is changed in response to a detected change in an environmental characteristic. The mobile communications device monitors one or more environmental characteristics, such as motion, light, sound, and heat. When the mobile communications device detects a change in an environmental characteristic, the mobile communications device automatically adjusts the notification mode used to alert a user to an incoming communication. Additionally or alternatively, the notification mode is adjusted only when the magnitude of the detected environmental change exceeds a predetermined threshold. In some implementations, the notification mode change may be triggered only when the environmental characteristic change persists for a predetermined interval of time.

Abstract: The described techniques automatically change the notification mode used by a mobile communications device to alert a user of an incoming communication to the mobile communications device. The notification mode is changed in response to a detected environmental condition. The mobile communications device monitors one or more environmental conditions, such as motion, light, sound, and heat, and compares the detected level of each environmental condition to a predetermined threshold. In response to the comparison result, the mobile communications device automatically adjusts the notification mode used to alert a user to an incoming communication. In some implementations, the notification mode change may be triggered only after the environmental condition persists for a predetermined interval of time. In some implementations, the types of automatic notification mode changes used may be based on a preference of a user and may be set through the use of an Internet protocol interface.

Abstract: This invention discloses a method and a system for communicating with a user including wirelessly broadcasting content which is accessible to a multiplicity of users and which includes at least some non-audio enabling a user to select a portion of the content responsive to a selection by the user, capturing at least part of the non-audio content, corresponding to the portion of the content selected by the user and employing at least part of the captured content to access a contact using a mobile communicator by initially establishing contact with a non product-specific communication facility and employing product-specific information contained in the non-audio content.

Abstract: A service request is received and the source of the service request is identified as one of a subscriber, user, and terminal. Profile information for the source of the service request is accessed.

Abstract: A cellular telephone has a function of reproducing image signals and/or sound signals, corresponding to execution of a karaoke function and/or a game function. The cellular phone has conversion means for converting the image signals and/or the sound signals into TV broadcasting signals, and transmission means for transmitting the TV broadcasting signals to a TV receiver.

Abstract: A method of remotely sending updated radio port software from a radio port control unit (RPCU) to a radio port (RP) and storing the RP software in a memory of the RP. The memory includes first and second program code areas for storing first and second versions of the RP software. The method includes reading an indicator to determine which of the first or second program code areas is used for storing a current version of the RP software, running the current version of the RP software from either the first or second program code areas, storing an updated version of the RP software in the first or second program area that is not used for storing the current version of the RP software, and changing the indicator to indicate which of the first or second program code areas is used for storing the updated version of the RP software.

Abstract: Systems and methods that extract application data from software applications and convert the application data to profile data formatted in accordance with a profile data syntax are disclosed. The common syntax allows several different software applications to be used during the processing of calls.

Abstract: Briefly, a method to establish a connection to a local area network by configuring a mobile unit (MU) of a wireless network with wireless local area network (WLAN) parameters. The configuration may be performed by using a telecommunication system messaging service to exchange the configuration information between the mobile unit and a public access point (AP) of the WLAN.

Abstract: A method of updating data in an electronic database on a mobile station (MS) (20) includes: establishing a first connection with a user over a data network (50); and, receiving data to be entered into the electronic database from the user (10) via the first connection. The received data is forwarded to an over-the-air function (OTAF) server (60), and a second connection is established over a wireless air interface (26) between the MS (20) and a base station (BS) (24) of a cellular telecommunications network (22). The data is transmitted from the OTAF server (60) to the MS (20) via the second connection such that the data is entered into the electronic database.

Abstract: A system and method in a client device (22) for controlling the power within the client device (22). The client device (22) has a network access device (30, 130), a programmable timer (48), and a controller (42). The network access device (30, 130) has at least a powered state and a power-off state. The programmable timer (48) operates the network access device (30, 130) in the powered state. The controller (42) is coupled to the programmable timer (48) and is capable of providing a time period for operating the network access device (30, 130) in the powered state. The controller (42) determines the time period based on a discontinuous reception (DRX) parameter obtained from the network access device (30, 130). The network access device (130) may include a transceiver. The network access device (30) may also include a transceiver and a controller. There are also methods of operating the client device (22) to control the power within the device.

Abstract: Through the use of a serial bus processor coupled to memory-mapped registers of a programmable radio interface processor (RIP), the novel radio interface of the present invention overcomes the problem of disparate interfaces between the digital section and the analog section of a wireless communications system. The serial bus processor receives data from a plurality of lookup tables which, in turn, are indexed by data received from the analog section. The serial bus processor then uses data values retrieved from the lookup tables to generate processed control data for controlling the digital module. The lookup tables are programmed with data so to compensate for nonlinearities which may be present in the analog section, but are not accounted for in the digital section.

Abstract: A method for the seamless switching of a wireless device between wireless wide area networks (WWANs) and wireless local area networks (WLANs) includes automatically detecting the available WWANs and WLANs, selecting one of the available networks for use by the wireless device, and connecting the wireless device to the selected network. The method also includes maintaining the network connection by monitoring the connection and, upon determining that the connection has been lost, selecting a another available network for use and connecting the wireless device the other network. Additionally, the method communicates information about the availability networks and connection status to a user of the wireless device, which allows the user to manually switch the wireless device connection from the automatically selected available network to another available network. Further, a wireless device implements the above described method.

Abstract: A method for processing a request from a first terminal to establish a communication session between the first terminal and a second terminal, the first terminal and the second terminal being operable to communicate via a telecommunication network, the method comprising: receiving at the telecommunication network a request from the first terminal to establish a communication session with the second terminal; determining whether the second terminal is available to support the communication session; and if the second terminal is determined not to be available to support the communication session, transmitting to the first terminal the address of a data set corresponding to the second terminal.

Abstract: A wireless communication system has a central computer, one or more access points and personal badges that communicate with the one or more access points. The central computer includes a database indexed by either user identification codes or badge serial numbers. When a user activates a badge, the central computer assigns the badge to the user who activated the badge so that any message for the user is directed to the badge. The user may also access his personal data section in a central computer database through the badge while the activation is valid. When the user deactivates the badge, the central computer deletes the association and returns the badge to a non-user-specific state. Where docking stations are available to rest the badges not being used, the badges may be configured so that they are activated when decoupled from the docking stations and deactivated when coupled to the docking stations.

Abstract: To protect the privacy of a user subscribing to a mobile telephony operator, the operator produces an isolating identifier by which the user can link up anonymously with a content provider. The operator/producer is the only entity capable of relating the isolating identifier to the user on request. An isolating identifier is, furthermore, either an isolating session identifier, hence one that changes at each connection of a user to a provider, or an isolating context identifier, hence one that persists over several connections. Furthermore, a context identifier is proper to a user/provider pair. This even further isolates the user. The format of the isolating identifier is compatible with the format of the NDS field, defined in the telephony standards.

Abstract: A network testing system for performing network simulation tests and traffic tests comprises an administrative workstation (2), a network testing apparatus (6) and a network device (8). The administrative workstation comprises a simulation test controlling module (24), a traffic generating parameter designing module (26), and a network model designing module (22). When the network testing apparatus is in a network simulating test mode, the simulation test controlling module is for transmitting simulation test parameters. The network testing apparatus is for selecting a network simulating model and a network protocol, and for controlling traffic generation to perform network simulation tests. When the network testing apparatus is in a traffic generator operating mode, the traffic generating parameter designing module is for transmitting the second traffic generating parameters. The network testing apparatus is for controlling traffic generation to perform traffic tests.

Abstract: A method and apparatus for recognizing signals in a mobile communication system reduces a mean acquisition time based on a signal-to-noise ratio of a received signal and the moving speed of user equipment which transmitted the signal. This apparatus includes a multi-path searcher of a base station modem which analyzes a signal from the moving user equipment using a Doppler estimator, decides the moving speed of the user equipment, and transmits a control signal proportional to the moving speed to coherent and non-coherent accumulators. A signal-to-interference ratio estimator then decides a signal-to-noise ratio of the signal and compensates for a control signal transmitted to each accumulator. Through this approach, higher reliability is achieved than other multi-path searchers, which merely consider the moving speed of the user equipment. Also, a mean acquisition time taken to recognize and search signals and an initial synchronization time are reduced and wireless resources of a base station are saved.

Abstract: A wireless network provides controlled wireless communications with multi-mode wireless WTRUs. The wireless network has at least one base station having a transceiver operating in an infrastructure communication mode with multi mode WTRUs and a controller that transmits control signals via infrastructure communications with a WTRU that control peer-to-peer mode communications of that WTRU with other WTRUs. A WTRU has transceiver components configured for selective operation in an infrastructure communication mode with a network base station and in a peer-to-peer communication mode with other WTRUs. The WTRU also has a transceiver controller configured to selectively control peer-to-peer mode communications with other WTRUs based on communication signals received in infrastructure communications with a network base station.

Abstract: A network element includes logic to access a storage element comprising a service profile. The service profile includes information about actions to take in response to a request for a service. The network element includes logic to access the service profile and to identify acts common to responding to the service request and at least one of acts underway and acts scheduled to be underway in the network.