Abstract: A radio communication apparatus transmits signals between an outdoor unit and an indoor unit which are connected to each other through a cable. This apparatus includes a variable level adjustment circuit in the indoor unit. In the apparatus, the fixed level difference of a reception signal due to the installation parameters of a reception system is eliminated, and the reception signal is adjusted to make the reception signal level become equal to a predetermined standard input level.

Abstract: A method of notifying a user of two or more networks (10, 12) that the user has received a message in a messaging system (28, 58) or that a message has been deleted. The method notifies all phones (30, 54) operated by the user on all of the networks. The method also forwards calls directed to a user to a single messaging system that may reside on any network, regardless which of the user's phones a caller dials. The invention permits a user to be notified of the receipt or deletion of a message at all of the user's phones and provides messaging services on all of a user's phones with a single messaging system.

Abstract: A technique for controlling a wireless communication network to provide for blossoming capacity to a relatively high capacity state and/or wilting capacity to a relatively lower capacity state. Connections in progress with active subscriber units are properly handled without the need to send explicit handoff commands from the base stations. The cell sites may be advantageously implemented with cable microcell integrators that comprise remotely deployed transceiving equipment that are interconnected to centrally located base transceiver station equipment via a broadband cable distribution network. In an initial relatively low capacity state, adjacent cells are operated at the same carrier frequency such that they form simulcast groups so that subscriber units traveling in adjacent cells will operate with the same radio channel. As demand increases, the power level of an auxiliary radio transceiver is gradually increased while the power level of the original transceiver in the cell is gradually decreased.

Abstract: A pager which includes, in addition to a message receiving function, a data generation program responsive to an operation for generating and storing data in the memory; and optical communication circuit for generating and transmitting a first optical signal indicative of the message or the generated data in accordance with a data selection command to another pager and for directly receiving a second optical signal including second data from the other pager and outputting the received data; and a receiving control program for storing the received data in the memory in response to a receiving command. It may further comprise: an ID code generation program for generating a first ID code according to the data selection command; a data attaching program for attaching the ID code to the data to be transmitted to another pager. The received data is stored according to the received ID code. A light intensity changing circuit may change an intensity of the first optical signal.

Abstract: A information fulfillment system and method for providing information to a caller having a wireless communication device. Upon receipt of sensory prompting and manual or automatic input of access codes to the wireless communication device, the caller's identity and the input access code are verified. Thereafter, the call is connected through the PWN and along the PSTN to the system messaging or fulfillment center for automatic or live-operator delivery of the requested information. Automatic verification, connection, and billing modification processes are provided for implementation of the system and method.

Abstract: A communication system and a communication method arranged to obtain a diversity effect in mobile communication, to reduce the influence of multipath interference, fading or the like, to perform comparatively simple information communication such as message communication with improved reliability, and to achieve effective utilization of frequencies. A plurality of base stations having receivers are provided around an urban area within base station zones. The base stations repeatedly transmit the same message data. Receiving repeaters are provided in the urban area and small or medium suburban zones. Each receiving repeater relays a signal from a small mobile terminal via an Internet network if the output level of the mobile terminal is so low that direct transmission to one of the base stations is impossible. A 25 kHz frequency band is divided into four narrower bands of 6.25 kHz in one of the embodiments.

Abstract: A location search auxiliary system used in a cellular radio telephone. The location search auxiliary system includes an auxiliary battery and a search signal receiver. If the cellular radio telephone is not equipped with a main battery or if the main battery mounted therein is substantially discharged, the search signal receiver is operated by power from the auxiliary battery. If a search signal is transmitted to the search signal receiver, the cellular radio telephone generates an alarm tone or a voice message indicating that it is a missing telephone.

Abstract: The present invention provides for improved loopback testing of an electronic communications device. The electronic communications device (50) includes a transmit serializer (16), a transmit output buffer (13), a first phase interpolator (52), a phase locked loop (42), a second phase interpolator (44), a receive deserializer (18), a receive input buffer (15), and phase adjust logic (46). The PLL (42) generates a timing signal in accordance with a reference clock signal (43). In one mode of operation, the transmit serializer (16) transmits data for output through the transmit output buffer (13) in accordance with the timing signal generated by the PLL (42). In another mode of operation, the phase interpolator (52) accepts as input the timing signal generated by the PLL (42).

Abstract: Weighting coefficients for a phased array antenna are iteratively refined to optimal values by a ‘bootstrapped’ process that starts with a coarse set of weighting coefficients, to which received signals are subjected, to produce a first set of signal estimates. These estimates and the received signals are iteratively processed a prescribed number of times to refine the weighting coefficients, such that the gain and/or nulls of antenna's directivity pattern will maximize the signal to noise ratio. Such improved functionality is particularly useful in association with the phased array antenna of a base station of a time division multiple access (TDMA) cellular communication system, where it is necessary to cancel interference from co-channel users located in cells adjacent to the cell containing a desired user and the base station.

Abstract: A method and system for load balancing used in a mobile telecommunications network. The load balancing system includes a mobile services switching center and a first base station controller coupled to the mobile services switching center for managing a first plurality of cells. The load balancing system further includes a second base station controller coupled to the mobile services switching center for managing a second plurality of cells, where one cell of the first plurality of cells is adjacent to one cell of the second plurality of cells. The second base station controller includes a processor responsive to receiving a first load indication message from the first base station controller in order to determine whether to handover at least one ongoing call from the one cell of the second base station controller to the one cell of the first base station controller.

Abstract: A power management system for a mobile unit wherein the frequency of scanning a neighboring cell may be controlled. A mobile unit consumes power in standby mode by periodically scanning the base station in each neighboring cell to determine which base stations are providing a usable signal. When the signal provided by the mobile unit's servicing base station diminishes, the mobile unit informs the cellular network of the base stations providing usable signals to assist in the handover. By detecting the rate of change of the signal strength received from a base station, the mobile unit may change the scanning rate of each neighboring cell. Alternatively, the mobile unit can estimate the relative speed it is traveling through a cell. If traveling slowly through the cell or if the signal strength is not changing over time, the need for a rapid handover diminishes. The mobile unit may also increase the scanning rate if traveling rapidly through the cell.

Abstract: A system and method employing an access terminal for maintaining discontinuous communications including a gateway receiver for receiving the discontinuous information, a radio frequency (RF) communication link via geosynchronous earth orbit satellite for conveying multiple communication channels using time division multiple access (TDMA), the access terminal initiating information communication with the receiver via at least one of the multiple communication channels. The access terminal further includes a memory for storing protocol processing information and a transmitter for establishing the radio frequency communication link to the receiver of the terrestrial gateway system. The access terminal memory provides for destroying of a signal pattern or protocol assigned to the access terminal by the gateway receiver or transmission of keep-alive bursts by the transmitter during periods of inactivity to maintain information communication with the receiver.

Abstract: A radio communications system includes a radio base station provided with an array antenna. The antenna lobes of the array antenna can be directed onto a terminal with the aid of a generated directional estimate. The directional estimate is based on a signal received from the terminal. A method registers a generated directional estimate together with a terminal recognition character. The directional estimate is read when the radio connection with the terminal changes channel. The antenna lobe is directed on the basis of the direction estimate, immediately communication commences over the new channel. A radio base station is equipped with a database in which the terminal recognition character and the direction estimate are registered.

Abstract: A radiophone is provided with a user interface including a single multi-functionality key with multiple functionality, including call handling. The present functionality of said multi-functionality key is displayed on a display. The functionality of said multi-functionality key and the information displayed on the display are controlled by a controller, which monitors the information displayed on the display and controls the functionality of said multi-functionality key in dependence on the displayed information.

Abstract: In a portable radio terminal having a liquid crystal display, when a radio data receiving period overlaps the timing of outputting a liquid crystal alternating signal to the liquid crystal display, the outputting of the liquid crystal alternating signal is deferred until the radio data receiving period ends, whereby the angle of the liquid crystal is not inverted until the radio data receiving period ends. Therefore, during the radio data receiving period, there does not occur a noise caused because of the inversion of the angle of the liquid crystal, with the result that the receiving sensitivity is not deteriorated.

Abstract: A high priority and/or emergency overload access control system treats a wireless unit as a higher priority wireless unit when the wireless unit is attempting to access a wireless communications system with a high priority call, such as an emergency call. For example, the overload access control system can recognize if the wireless unit is attempting to initiate a call to an emergency number. If so, the wireless unit can perform a persistence test as an emergency class (e.g. overload class 10-15) wireless unit in attempting to access the wireless communications system. Thus, the wireless unit will experience an increased probability of passing the persistence test and thereby reducing the persistence delay in attempting to access the wireless communications system with the emergency call.

Abstract: The present invention intends to provide a receiver which receives a signal by switching a plurality of communication systems, wherein a circuit scale is reduced to intend to the miniaturization of a device. The receiver converts a received signal to a base band signal by a local oscillation frequency based on the selected communication system by a mixer, limits a band by an LPF through which signals of all communication systems can pass, performs a band limitation based on the communication system by weighting with a tap coefficient based on the selected communication system to synthesis by a transversal filter, and demodulates a signal by a demodulation system based on the selected communication system by a demodulating unit.

Abstract: In accordance with embodiments of the invention, in a Wireless Local Area Network (WLAN) configured in accordance with the HIPERLAN Type 2 standard where an Access Point (AP) and Mobile Terminals (MTs) use a duplex airlink having a MAC frame structure to communicate with each other, when an MT fails to properly perceive and decode a wakeup announcement in the MAC frame that is directed to it by the AP, the MT will remain awake and continue to decode and monitor subsequent MAC frames until it either receives a wakeup announcement directed to it, or until a predetermined number of MAC frames transpire. Where the MT fails to correctly decode a wakeup announcement and/or fails to send an acknowledgment signal back to the AP when the wakeup announcement includes a polling request, the AP will continue to resend the wakeup announcement and any appropriate, associated downlink data pending for the AP, in subsequent MAC frames.

Abstract: A telecommunications system and method is disclosed for allowing a mobile station involved in a single-hop satellite call to complete a conference emergency call. One of the mobile stations involved in the single-hop satellite call activates an emergency call feature, which triggers one or both of the mobile stations to perform a call release and call re-establishment procedure. When one or both of the mobile stations performs call re-establishment, the call is marked as an Emergency Call to prevent the mobile stations from being reconnected in a single-hop call. After re-establishment, the mobile station that activated the emergency call feature transmits an Emergency Setup message to the MSC/VLR, which initiates a call connection to the Emergency Call Center (ECC). Once the MSC/VLR completes the call to the ECC, the MSC/VLR bridges all parties together in a conference call.

Abstract: A method and system for routing calls to a wireless platform uses local number portability searches to achieve advanced intelligent network capabilities. The method and system of the present invention “ports” wireless subscriber numbers to a number for a platform providing a specific service. When a caller dials the subscriber's wireless number, a switch determines whether the number is portable. Since the number has been ported, the switch launches a query to a local number portability service control point to obtain additional routing instructions. The service control point accesses a local number portability database to determine the proper routing number. The new routing number allows calls to be routed to a service platform in the wireless network. The service control point transfers the routing number to the switch which then translates the routing number to a directory number for the platform. The call is then routed to the platform.