Abstract: The invention relates to a signalling method and a transmitter, used in a digital radio system wherein the signals transmitted comprise data and signalling. The transmitter comprises control means for placing the signalling in a signal to be transmitted on the basis of control information that is separate from the data, and for preventing the control information from being placed in the signal to be transmitted, the control information being used for managing the signalling.

Abstract: In one embodiment, a communication device according to the invention includes an accelerometer, and an operational aspect of the communication device is adapted to be influenced by an output of the accelerometer. The communication device may be a telephone, such as a wireless telephone, and the accelerometer may influence the operational aspect of the wireless telephone to advantageously make the wireless telephone operate more like a wired telephone. An exemplary wireless handset according to the invention may include a wireless transceiver, a controller, and an accelerometer, wherein the controller is adapted to receive an output from the accelerometer and affect a state of the wireless transceiver based thereon. In another embodiment according to the invention, a method of operating a communication device includes the steps of determining a motion characteristic of the communication device, and affecting an operational aspect of the communication device based on the motion characteristic.

Abstract: A satellite receiver is switchable between an operating mode wherein the receiver is capable of generating an output signal using received signals from one or a plurality of satellites, aid another operating mode wherein the receiver generates an output signal using signals received from only one satellite. The former operating mode is useful when the receiver is operating in a mobile environment. The latter operating mode is useful when the receiver is operating in a fixed environment. The receiver is configured to detect the mode in which it is operating. The receiver comprises at least two recevier arms for processing a broadcast signal from a selected one of two satellites. The receiver disables one of the arms when the receiver is stationary.

Abstract: A method and system for autonomous two-way RF communication between a launch vehicle and at least one receiving or tracking station. Detection circuitry continuously determines the identity of the optimum receiving or tracking station (ground, sea, airborne, or satellite) and selects the best launch vehicle transmission antenna to close the RF telemetry link. The method and system is designed to simultaneously transmit and receive RF signals. The antenna system includes a telemetry transmission link and an antenna selection link. Antenna selection link signals received by each antenna element on the launch vehicle are provided via RF couplers to a receiver for signal strength and modulation signal detection. The telemetry transmission link communicates with a receiving or tracking station by using a transmitter to drive one of two or more switched antennas mounted on the surface of the launch vehicle having the current higher signal strength.

Abstract: A method for a Digital Wireless Office System (DWOS) to establish and update a public neighbor cell list for roaming mobile stations is disclosed. Transmissions of the base stations of public cells are scanned by DWOS scanners. Information from the Digital Control Channels and Broadcast Control Channels is used in formulating the list.

Abstract: A system and method are disclosed for providing personal dialing profiles for users of wireless devices. The users enter telephone numbers into a profile list and specify any desired special handling or routing operations for future calls to each number. The personal profile lists allow users to dial only an abbreviated portion of the telephone number and then the wireless network adds any other required digits, such as country, area or local exchange codes. The system also provides specified routing, such as using a preselected service provider when a call to a particular number will be a long distance call. The personal profile information is stored on an service control point (SCP) or a database that is accessible to the wireless telephone network. Users add telephone numbers and configure profile information using a personal computer, which is linked to the wireless network or SCP via a data network, such as the Internet.

Abstract: The handheld personal electronic device has a first body having a display, a second body having a plurality of manual inputs, the second body capable of attachment to the first body, the personal electronic device having an open position wherein the display of the first body and the manual inputs of the second body are accessibly exposed. And, the personal electronic device having a closed position wherein the display of the first body is protected by the second body and the manual inputs of the second body are accessibly exposed.

Abstract: A first reception power measuring section 206 measures reception power of individual channel signals transmitted with a narrow directivity, and a second reception power measuring section 207 measures reception power of common channel signals transmitted with a wide directivity. A determining section 210 determines the presence or absence of a directional shift based on an average reception power of the individual channel signals and an average reception power of the common channel signals. A transmission power controlling means 211 performs transmission power control based on the determination result. This makes it possible to correctly determine the cause of a reduction in reception power and to control transmission power accurately.

Abstract: An apparatus and method for paging a user terminal (UT) using a satellite communications system having a gateway and one or more satellites, wherein each satellite produces a plurality of beams and each beam includes a plurality of channels. The method of the present invention includes the step of recalling a location of the UT, wherein the recalled location corresponds to a location of the UT at a time t1. In one embodiment this is accomplished by performing a lookup in a table that includes location information for user terminals at different points in time. The method also includes the step of determining an area, based on the recalled location, within which the UT is assumed to be located at a time t2, where time t2 is later in time than time t1. The next step is to determine a time t3, where t3 is equal to or later in time than time t2, when the following two criteria are satisfied. First a satellite of the one or more satellites has an elevation angle between &thgr;1 and &thgr;2.

Abstract: In soft hand over in a code division multi access mobile radio communication system, interference in a down link caused by transmission from a plurality of base stations for one mobile station, can be restricted. Control of transmission power is performed according to command from the mobile station only in the base station serving as a primary base station which has minimum propagation loss with the mobile station during soft hand over, and the base stations other than the primary base station perform transmission with restricting output. In comparison with the transmission power control performed by the conventional plural base station transmission, interference for the peripheral mobile station can be reduced to achieve higher down link capacity.

Abstract: A method and system of optimizing the signal strength and interference characteristics of a wireless telecommunications network which includes a plurality of cells with at least one of the cells being disturbed (the “disturbed cell”) by events occurring in one or more offending cells. The method comprises the step of computing a distribution of disturbance events in the disturbed cell as a function of disturbances created by the offending cells. The distribution of disturbance events is then utilized to predict changes in coverage of the offending cells as changes in the carrier-to-interference (C/I) ratio of the disturbed cell are made. Such predictions then lead to modifying the power levels of wireless components in the network to reach acceptable tradeoffs between interference and coverage. Thus, the tradeoff is a function of the predicted changes in C/I and acceptable coverage and interference thresholds for the network.

Abstract: The objective of the present invention is to have a desired screen displayed with shortened waiting time in using functions for the electronic note, etc., while engaging in telephone talk. Another prime objective of the present invention is to achieve an easy-to-use mobile information terminal equipment which also functions as an electronic note, word processor, personal computer, and so on. In transitting from telephone mode (cover closed status) to information terminal mode (cover opened status), the screen to be displayed is determined to be either a historical information, talk log information, or user setting screen. This enables the user to obtain the desired screen with fewer number of operations and with less waiting time.

Abstract: A method and apparatus for performing over-the-air activation for wireless communications service subscriptions within a wireless communications system. The method includes providing a plurality of subscription modules each having a unique identifier that corresponds to a plurality of non-activated service subscriptions. An activation period is established for each of the non-activated service subscriptions within which the corresponding subscriptions must be activated or deleted from the system. A list of unique identifiers and their associated activation periods is stored in the wireless communications system. To activate the subscription, a subscription module is mated with a mobile equipment device. An over-the-air activation request is transmitted to the wireless communications system that includes the unique identifier associated with said selected subscription module.

Abstract: A handover processing method in a satellite communications system allowing stable and reliable handover process is disclosed. Schedule information is previously registered in each of the satellites. The schedule information of each satellite includes a radius of a coverage area thereof, a point of time provided thereto, and physical locations of a center point of the coverage area thereof according to the point of time. A handover start time is calculated based on the schedule information and the physical location of a mobile station. A control signal regarding the handover start time is transmitted to an adjacent satellite. Since the handover start time is known in advance at both the first satellite and the adjacent satellite, the handover can be performed and completed between them without sending handover request signal.

Abstract: A system adjusts a receiving device in response to sensing symbols. An automatic gain control is adjusted in response receiving a first symbol of a data unit from a first antenna. After adjusting the automatic gain control at least a second and a third symbol of the data unit are received, and in response thereto (1) a first energy of at least one of the second and third symbols is calculated, (2) a first frequency offset of at least one of the second and third symbols is calculated, and (3) a first temporal offset of at least one of the second and third symbols is calculated. The automatic gain control in response receiving a fourth symbol of the data unit from a second antenna is received.

Abstract: A method, apparatus, and system perform fast sector identification and base station synchronization. The base station transmits information in primary and secondary control channels to the remote station. The remote station performs synchronization using information in the primary and secondary control channels. A group of identification codes corresponding to the sector is determined using information in the secondary control channel. If this does not result in identification of the sector, an identification code corresponding to the sector is determined from information in the primary control channel. If this does not result in identification of the sector, the sector is identified based on information multiplied with symbols, e.g., pilot symbols, in the primary control channel, without having to decode the BCCH.

Abstract: The invention relates to a method for the control of the bandpass width in the filtering of an intermediate frequency signal of an audio receiver of a radio reception apparatus. A signal parameter of a user signal of the audio receiver which is received at a reception frequency is determined and taken into account and a signal parameter of at least one neighboring signal which is received at a neighboring frequency which is adjacent to the reception frequency is determined. The bandpass width of the intermediate frequency filtering is selected in dependence at least on the signal parameter which is determined from the user signal, on the signal parameter which is determined from the neighboring signal and on the frequency distance between the reception frequency and the user frequency. Furthermore, the invention relates to a corresponding radio reception apparatus.

Abstract: A transmit power control circuit, which can control a transmit power of a transmit power control circuit through wide dynamic range and can reduce an insertion loss. A first attenuator inputs a radio-frequency signal and outputs an output signal after controlling the inputted radio-frequency signal. A selective switch inputs the output signal of the first attenuator, and outputs it to one of a main transmission line and an auxiliary transmission line. One directional coupler is provided to the main transmission line and has one and another ends respectively connected to selective switches. The selective switches are switched by a signal from a microcomputer. When the selective switch is switched to the main transmission line, one end of the directional coupler is connected to a terminator, and another end thereof is connected to a wave detector.

Abstract: Apparatus for measuring the distance between a mobile station and a base station in a mobile radio-communications system, the apparatus including a device for determining the reception instant at which the mobile station receives predetermined data transmitted by the base station, the circuit including a correlator for correlating an in-phase component and a quadrature component of a modulated signal received by the mobile station respectively with an in-phase component and a quadrature component of a reference signal generated in the mobile station and corresponding to the predetermined data, correlator delivering real components and imaginary components of correlation coefficients, and the apparatus being characterized in that it further includes a processor for using the real components and the imaginary components of the correlation coefficients to determine a complex magnitude whose phase varies continuously as a function of the reception instant.

Abstract: A computer implemented process compares signals communicated between a known position and a plurality of base stations in a cellular telephone system to determine the level of interference with a signal on a channel expected to serve the known position, and determines a value indicating a probability of interference with a signal on a channel expected to serve the known position.