Abstract: A method and an arrangement of functional entities in a mobile telecommunications system for supporting to a mobile subscriber a second set of operator specific services (OSS+), having a high level of functionality, additional to services standardized in the system. A first set of operator specific services (OSS), with a lower level of functionality, is supposed to already be provided for in the system. The second set of services (OSS+) is provided for by a telecommunications standard different from the standard which provides the first set of services (OSS) and is preferably a structured standard for mobile telecommunication. The second set of services (OSS+) is triggered by an intelligent network capability indicator, that is included in a subscription information field stored for each subscriber in a subscriber database.

Abstract: Interference effects between television transmitters for amplitude modulated or digital video and operating on a common allocated channel or frequency is avoided while discrimination is improved by synchronizing carrier signals for a plurality of transmitters. Booster transmitters for correcting coverage anomalies can operate of the same channel or frequency rather than requiring a different channel or frequency presently required in translators; making all allocable channels available for diverse broadcast programming. Discrimination between transmitters operating on the same channel or frequency but with potentially differing programming can be achieved with directional antennas. Synchronization of carrier signals is achieved by frequency multiplication of a tone relayed over a satellite transmission channel by an integral power of two using one or more serially connected full-wave rectifier stages and tuned filters.

Abstract: Interference effects between television transmitters for amplitude modulated or digital video and operating on a common allocated channel or frequency is avoided while discrimination is improved by synchronizing carrier signals for a plurality of transmitters. Booster transmitters for correcting coverage anomalies can operate of the same channel or frequency rather than requiring a different channel or frequency presently required in translators; making all allocable channels available for diverse broadcast programming. Discrimination between transmitters operating on the same channel or frequency but with potentially differing programming can be achieved with directional antennas. Synchronization of carrier signals is achieved by frequency multiplication of a tone relayed over a microwave transmission channel by an integral power of two using one or more serially connected full-wave rectifier stages and tuned filters.

Abstract: The present invention relates generally to the problem of positioning of a mobile station (“MS”) in a Public Land Mobile Network (“PLMN”), and more particularly to the problem of establishing the most accurate estimate of the last known position of the mobile station when the mobile station has switched off or has left the coverage area of the network. An application first sends a request to a Mobile Positioning Center, requesting position information for a particular subscriber. The MPC contacts the preferred Positioning Procedure, e.g. GPS, to obtain the positioning information. If this information is not available then the MPC contacts the HLR to get the last known positioning data. The HLR will try to retrieve the last known positioning data from the VLR and forward it to the MPC. If this is not available then the last known position stored in the HLR is forwarded to the MPC.

Abstract: A method for generating a local oscillation signal comprising two separate frequency converters, of which one frequency converter includes an output unit for generating an internal output signal to be used for its frequency conversion, and the other frequency converter employs the same internal output signal from the output unit as the local oscillation signal.

Abstract: A cellular system in accordance with the principles of the present invention permits one node, or network element, within a cellular system to request dialed number validation from another network element in the cellular system. The invoking and responding nodes may be any of the following: a mobile switching center, a home location register, a service control point, or a service node. Upon reaching a state in call processing where further dialed number analysis may be required, the invoking node will send an ANSI-41 compliant dialed number validation request message to the node performing validation. The validating node will determine whether the dialed number is allowed under the subscriber's dialing plan. After making the determination, the validating node will return a message to the invoking node indicating whether the specified digits are allowed according to the subscriber's dialing plan.

Abstract: A frequency mixing system that provides an expanded dynamic range when compared to the dynamic range(s) of an individual mixer(s) that makes up the frequency mixing system. The frequency mixing system adjusts the amplitude of an input signal to be frequency mixed to produce a frequency converted signal with an acceptable and/or lower (when compared to the amplitude of intermodulation distortion produced by mixing the input signal without amplitude adjustment) amplitude of intermodulation distortion. If the input signal were frequency mixed without the amplitude adjustment, an unacceptable and/or higher level of intermodulation distortion would result (when compared to the corresponding intermodulation distortion if the amplitude-adjusted signal were mixed by an individual mixer). Adjusting the amplitude of the input signal creates an adjusted signal with signal distortion on the first path.

Abstract: A receiver device, in which the receiving channel can be changed over to another, includes an RF unit which receives a plurality of channel frequency signals, a frequency conversion unit, an intermediate frequency amplifier and an FM detection unit, a signal intensity detection unit which, when the mode for setting the receiving channel is set, scans the channel frequencies to detect the signal intensities of the received signals in the respective channels and an A/D converter, a RAM which successively stores therein the signal intensities in the respective channels, and a CPU which sets the receiving channels on the basis of the signal intensities stored, detects the channel information contained in the received signals, and sets, when the detected channel information is the channel information of the desired channel, the channel of the channel information as the receiving channel for ordinary communications.

Abstract: The invention provides a system and method for controlling transmission power of a mobile unit in a wireless communication system which minimizes transmission power overshoot caused by counteracting the effects of deep fading. The power control bits are received by the mobile unit then examined on an individual basis and also as a block of bits. Initially, each time a request to increase power is received the mobile unit increases the transmission power by 1 dB. When the mobile unit determines that a predetermined number of bits in a block each indicates a request to increase power is received the mobile unit increases the transmission power by 2 dB. After the block of increase requests, if the mobile receives a request to decrease the transmission power it increases the transmission power by 2 dB, then decreases the transmission power for the next two power control periods by 3 dB each.

Abstract: A mobile communication system comprising an analog baseband processor that is configured for providing improved DC offset compensation. An offset compensation circuit of the analog baseband processor generates a first DC offset compensation signal to preset DC offset voltage of analog baseband signal when the mobile communication system is power on. A mobile station modem of the mobile communication system generates a second DC offset compensation signal to compensate for a detected DC offset voltage during operation of the mobile communication system subsequent to the DC offset voltage being preset. In addition, the offset compensation circuit re-presets the DC offset by generating a third DC offset compensation signal whenever the mobile communication system enters a predetermined mode of operation such as a “data send” mode.

Abstract: A telecommunications system and method is disclosed for providing accurate country information to Mobile Stations (MSs) within a satellite network. At the time of location update, the MS sends Global Positioning System (GPS) coordinates identifying the location of the MS to a serving Mobile Switching Center (MSC) via a satellite. The MSC determines the identity of the current country that the MS is located in, and calculates the distance to the nearest country border. The current country identity and distance information are transmitted back to the MS via the satellite. Thereafter, the MS continues to calculate GPS coordinate information, and if the distance between the current location of the MS and the location of the MS at the time of the previous location update becomes equal to or greater than received distance information, a query is done to the MSC to determine the current country where the MS is located. If the country has changed, then the new country is displayed on the MS.

Abstract: A radio receiver comprises an RF tuner (10) on a computer card (11) having a frequency selector (19) for determining the current selected frequency. A programmed computer functions as a control system 100 controlling the tuner and a display screen 200 presents data and user selectable inputs to the user. An input peripheral device (101) enables the user to input data or information and commands to the control system. The control system causes a display (220) display on the display screen (200) in real time both digital and analogue indications of the current frequency being passed by the tuner (10); and provides a tuner frequency select control responsive to input of a frequency change command by the user to change the current selected frequency.

Abstract: An antenna for a folding mobile phone comprises two main sections connected by a hinge mechanism. When the mobile phone is in the open position (the normal operating position), the antenna comprises a planar conducting sheet combined with a slotted plate and acts as a monopole. When the mobile phone is in the closed position (the standby position), the antenna comprises the slotted plate acting as a slot antenna with the planar conducting sheet forming a reflector.

Abstract: A network operations center comprised of hardware and software that tests paging devices, such as two-way paging devices to determine that they conform to a specified protocol.

Abstract: A simultaneous broadcasting system, a transmitter, and a receiver therefor use a first frequency bandwidth for a wide area broadcasting and a second frequency bandwidth for a local area broadcasting obtained by dividing a frequency bandwidth of one broadcasting channel. In the simultaneous broadcasting system, a same program for the wide area broadcasting is transmitted based on an OFDM modulation method by using the first frequency bandwidth and a different program for each local area station is transmitted by using a different spreading code allocated for each local are station based on a SS modulation method.

Abstract: RF circuit includes an amplifier and a shunt. The shunt is controlled to provide a path around the amplifier for avoiding intermodulation distortion caused by overdriving the amplifier. The shunt is formed by a diode with capacitors that match to the RF characteristics.

Abstract: A speed estimation apparatus detects the change of a transmission power control command transmitted from a receiving station and estimates the moving speed of the receiving station in mobile communications of a spread spectrum system. The speed estimation apparatus also generates a desired signal power by extracting a desired signal from received signals and estimates the moving speed of a corresponding transmitting station using the desired signal power.

Abstract: A mobile phone with a display is disclosed, which automatically compensates for situations in which poor lighting conditions are likely, by producing a much larger, bolder font than normal. For example, the larger, bolder font is displayed when external power is applied to the mobile phone, or when the mobile phone is being operated in the hands-free mode.

Abstract: A high capacity broadband base station employs a wideband radio and phased array processing subsystem. This phased array antenna subsystem contains multiple sets or pairs of alternating receive only and transmit/receive elements distributed in a two dimensional spatial array. Each digital wideband radio performs both receive and transmit channel signal processing. In the receive direction, the digital representation of the entire spectrum for each antenna element is divided into channels for the particular waveform of interest. For a 5 MHz PCS GSM, the digital wideband radio separates twenty-four carriers into twenty-four (200 KHz wide) data streams, each of which is representative of a respective channel, and couples each channel to a digital signal processor. In the transmit direction, the radio combines the digital representations of the twenty-four individual channels supplied by the DSP into a single wideband channel for transmission.

Abstract: A method of handling an incoming call to a mobile station (MS) in a radio telecommunications network having a gateway mobile switching center (G-MSC) and a home location register (HLR), and the MS communicates with the network via a satellite link comprising a satellite and a satellite gateway. The method includes storing in the HLR, a plurality of primary gateways and an associated backup gateway for each primary gateway in the network. If the primary gateway serving the MS fails while the satellite is still operational, the incoming call is routed from the G-MSC to the backup gateway. The backup gateway's base station subsystem (BSS) is reconfigured to cover the service area of the primary gateway, and the MS is notified that the backup gateway has replaced the primary gateway as the MS's serving gateway. Subscriber data for the called MS is provided to the backup gateway by the HLR.