Abstract: A cellular communications system is provided have both satellite nodes and surface nodes for providing mobile cellular communications services for a plurality of mobile user units. The surface and satellite nodes are fully integrated by a network controller for providing service over large areas. Multiple beam, relatively high gain antennas are disposed in the satellite nodes to establish satellite cells having enough gain in the satellite part of the system such that a user unit need only comprise a small, mobile handset with a non-directional antenna for communications with both ground nodes and satellite nodes.

Abstract: The invention provides an apparatus, for example, a portable telephone, which includes a chip card reader that has a connector which can be brought into contact with the contact pads of an integrated circuit present on a chip card of a first format called full-SIM format, which apparatus further includes a removable casing intended for being fixed in the operating position facing the chip card reader, and finally includes an adapter that makes it possible to insert and read a chip card of a second format called micro-SIM format, charactrized in that the removable casing contains the adapter which has a recess for receiving a chip card of the micro-SIM format, in that the removable casing contains a positioning device for holding the chip card of the micro-SIM format in position in the recess, and in that the recess and the positioning device have a configuration so that the contact pads of the integrated circuit which is present on the micro-SIM card are placed opposite the connector of the chip card reader a

Abstract: A downlink transmission power control scheme for a mobile communication system using the site diversity, which carries out a primary downlink transmission power control using a primary control signal which is transmitted from the mobile station and terminated at each base station, and an additional downlink transmission power control using additional control signals which are transmitted from the base station control station to the base stations. The additional downlink transmission power control may also use a secondary control signal which is transmitted from the mobile station and terminated at the base station control station. The primary downlink transmission power control can be carried out during a non-site diversity period while the additional downlink transmission power control is carried out during the site diversity period, or the primary downlink transmission power control and the additional downlink transmission power control can be both carried out during the site diversity period.

Abstract: A subscriber network element of a radio system provides a wireless local loop for transmitting telecommunication signals between subscriber stations and an exchange. To enable a register recall, the subscriber network element comprises a timer, a buffer arranged to buffer dialing frames, the timer being arranged to start measuring a new time interval upon reception of each dialing frame, and a control unit arranged to transmit a stand-by message and a register recall message, and to initialize the timer to measure a time interval of a predetermined length in response to the register recall frame, and to forward a "dialing received" frame and any digits buffered in the buffer as the time interval measured by the timer elapses.

Abstract: An apparatus and method by which a terrestrial based or satellite based cellular telephone is tested in-service, preferably at a retailer location, to identify the source of a cellular telephone user's dissatisfaction and to aid the retailer in resolving the issue. Test equipment is embedded within the cellular telephone network to captures currently available but unrecognized information relating to cellular telephone operation from a known location, i.e. the retailer's location, having known performance parameters. In this way, network related problems, such as fading, are eliminated. This allows cellular telephone performance to be evaluated and further allows various cellular telephone functions to be simulated. The invention thus allows identification of the nature of cellular telephone user dissatisfaction.

Abstract: A mobile communication system having a base station and a mobile station, provided with indoor and outdoor antennas in different locations of a building structure that substantially prevents penetration of electromagnetic radiation. A communication unit is connected between the indoor and outdoor antennas. The communication unit is arranged to detect a signal received at the indoor antenna from the mobile station while the mobile station is communicating with the base station, determines that the mobile station is entering the structure when the detected signal exceeds a predetermined reference level and establishes a radio link between the outdoor antenna and the base station and a circuit between the indoor and outdoor antennas and commands the mobile station to establish a radio link to the indoor antenna. The radio link established between the mobile station and the indoor antenna uses forward and reverse channels that avoid interference with other mobile stations.

Abstract: An arrangement for accurately measuring the frequency of an RF signal is disclosed. The arrangement includes a coaxial delay line carrying the RF signal and a means for directly measuring the resistance of the coaxial delay line and which resistance measurement is directly correlatable to temperature changes of the coaxial delay line. The arrangement, in response to the changes in the temperature of the coaxial delay line, provides appropriate signals to compensate for the temperature changes in order to prevent any temperature changes from degrading the accuracy of the frequency measured by the arrangement.

Abstract: A mobile station has a transmission/reception antenna, a reception antenna, external connector terminals, and transmitter and receiver circuits. Only the switch circuit, which includes a plurality of switch elements, is interposed between the antennas and external connector terminals, and the transmitter and receiver circuits. The switch circuit switches among modes of connection between the antennas and external connector terminals, and the transmitter and receiver circuits by switching the plurality of switch elements. A control circuit controls the switch circuit so that a signal passes through only one of the plurality of switch elements, by supplying a control signal to the switch circuit.

Abstract: A cellular mobile station system wherein a handover decision is based on measuring downlink transmissions of a serving cell and neighboring cells by a mobile station. Adjacent cells are typically arranged to be partly overlapping so as to ensure there is a sufficient period of time for the reception and decoding of the downlink transmissions of the neighboring cells, as well as for a handover decision. In some of the cells, there may be terrain obstacles, buildings, tunnels or the like obstacles shadowing the downlink transmission of the neighboring cell so that overlapping is not sufficient between such a cell and a neighboring cell. A repeater or an antenna is provided for extending the coverage area of the downlink transmission of the shadowed neighboring cell in such a cell so as to allow an advanced transmission and decoding of the downlink transmission of the shadowed neighboring cell.

Abstract: In the preferred embodiment, a Space Division Multiple Access (SDMA) radio communication system (100) utilizes a base station (101) having a plurality of antenna elements (103) used to transmit and receive to multiple radio communication devices (107, 109) on a same frequency and time channel. A different set of beam forming weights is applied to communications for each radio communication device (107, 109) in such a way as to minimize the interference between the radio communication devices signals. A set of distance metrics is calculated utilizing the sets of weights for each pair of radio communication units sharing a channel. When any distant metric is less than a pre determined threshold value, one of the radio communication devices (107, 109) is reallocated to a new channel or a handover instruction is performed.

Abstract: A coplanar antenna connector which interconnects an antenna and a printed circuit board of a portable radiotelephone is described. In particular, the antenna connector includes an antenna connector conductor strip having opposing first and second ends adapted for transmitting a radiotelephone signal from a source to an antenna or from an antenna to a receiver. The connector also includes at least one antenna connector ground strip having first and second opposing ends adapted for transmitting a radiotelephone signal. The at least one antenna connector ground strip and the antenna connector conductor strip are held in coplanar alignment, preferably by a nonconducting carrier ribbon. Each of the at least one antenna connector ground strips and the antenna connector conductor strip are spaced-apart and define a gap therebetween.

Abstract: An apparatus, such as a portable telephone, is disclosed. The telephone includes a chip card reader having a connector and a adapter which has a full-SIM side and a micro-SIM side. The micro-SIM side has a rail and a stop. Further, the adapter is reversibly and removably located in a recess of the telephone. The full-SIM side of the adapter is visible when a full-SIM chip card is connected to the connector of the chip card reader, and the adapter's micro-SIM side is visible when a micro-SIM chip card is connected to the connector. The rail and said stop are arranged to place contact pads of an integrated circuit present on the micro-SIM chip card opposite the connector of the chip card reader.

Abstract: A method and system for transferring subscriber information required for implementing an intelligent network (IN) service in a radio telecommunications network. The method begins by a G-MSC sending a signaling message requesting a location of the subscriber to a HLR. The HLR then recognizes that the subscriber has requested an IN service. Next, the HLR sends an indication that the subscriber has the requested IN service to the G-MSC. The next step includes sending a signaling message from the G-MSC to a service control point (SCP) identifying the IN service requested. Subsequently, the SCP requests from the HLR the subscriber information required for implementing the requested IN service. The HLR then sends a data message containing the requested subscriber information to the SCP.

Abstract: A dual-band nonreversible circuit device comprises a first circulator element (91) and a second circulator element (92) accommodated in a single housing (50, 50', 60) and operable around a first center frequency (f.sub.A) and a second center frequency (f.sub.B), respectively. The first circulator element (91) is formed by a combination of a first permanent magnet (31), a first ferrite plate (21) with a first center conductor (11), and a ground conductor plate (40) successively stacked on a lower magnetic yoke (50). Likewise, the second circulator element (92) is formed by a combination of the ground conductor plate (40), a second ferrite plate (22) with a second center conductor (12), and a second permanent magnet (32) successively stacked and covered by an upper magnetic yoke (60).

Abstract: A method for setting up perch channels in a mobile communication by a cellular system, capable of setting up a perch channel and a perch channel list for surrounding base stations at each newly provided base station autonomously. At the newly provided base station, reception levels of signals transmitted by mobile stations to surrounding base stations are measured by scanning uplink control channels corresponding to perch channels, and a perch channel of the newly provided base station and a perch channel list to be signaled by the newly provided base station are autonomously set according to the measured reception levels.

Abstract: In a radio frequency communication system (100), infrastructure transceivers operate in a configuration mode (301-306) and an active mode (307). When in the configuration mode, a given infrastructure transceiver (106-109) derives information regarding RF operating circumstances proximal to the infrastructure transceiver. The information regarding the RF operating circumstances, information regarding the infrastructure transceiver itself, and optionally information regarding present location of the infrastructure transceiver, is transmitted to a communication system configuration server (105). In response, information regarding operation of the infrastructure transceiver is received by the infrastructure transceiver. When in the given infrastructure transceiver is in the active mode, the information regarding operation of the infrastructure transceiver is used to support communications in the RF communication system.

Abstract: For providing power control for a mobile station in a mobile communication, in connection with accomplishing a handover of the mobile station from a presently serving cell to a target cell, each cell is assigned a maximum transmitting power level at which mobile stations are allowed to transmit in the cell. The receive level of the downlink signal of the handover target cell is measured at the mobile station prior to the handover, and the transmitting power level of the measured receive level of the downlink signal of the target cell. The mobile station is commanded to use the determined transmitting power level as its initial output power level in the target cell following the handover.

Abstract: A transmission power control method that is able to keep the signal quality approximately constant. A receiving-side station measures the average CIR for the radio communication channel in use. The receiving side station delivers a command for decreasing the transmission power to a transmitting-side station when the measured value is equal to or greater than a reference value. The receiving-side station also delivers a command for increasing the transmission power to the transmitting-side station when the measured value is less than the reference value. When a command for a preceding control period is an increase command, the transmitting power for the next control period is set as a first value obtained by subtracting a predetermined value from a prior value that precedes by the delay time.

Abstract: A user headset is provided that is operable to contain an audio device (50) and a receiver (52). The receiver (52) is operable to receive both audio information on multiple channels and also data. The data is received in the form of pulse width modulated sync signals. The sync signals are operable to provide a synchronization signal for 3-D liquid crystal lenses (60). The data is encoded within the sync signal through pulse width modulation. The width of the pulse defines various commands. These various commands define the channel over which the audio is to be transmitted. These channels can either be user-defined or they can be a function of the transmitter. The transmitter includes an audio generator (42) for generating audio signals on multiple channels and also a data generator (40). These are modulated onto a broad band optical signal and transmitted via an IR data link.

Abstract: A storing circuit for storing control data for a varactor diode, a frequency divided data generating circuit for generating frequency divided data to set the local oscillating frequency of a local oscillating circuit, a determining circuit for computing a receiving frequency from the frequency divided data and determining whether or not the receiving frequency is within a designated frequency range and an arithmetic circuit for executing computation in compliance with data indicating the receiving frequency and control data stored in the storing circuit are provided, and the capacitance of the variable capacitance element is controlled by analog-conversion of an output signal from the arithmetic circuit, thus tracking errors caused by variation in tuning elements are prevented and an RF tuning circuit control interval is reduced.