Abstract: A microwave transmitter/receiver module has a package that includes a high-frequency circuit board and an electromagnetically narrowed space. A semiconductor chip is mounted on the circuit board and is contained in the electromagnetically narrowed space. The electromagnetically narrowed space has a cutoff frequency that is higher than a carrier frequency for microwave communication. A receiver antenna pattern is formed on the top surface of the package and is electromagnetically connected to the semiconductor chip through a first slot. A transmitter antenna pattern is formed on the top surface of the package at a different position from the receiver antenna pattern and is electromagnetically connected to the semiconductor chip through a second slot. Since the antenna patterns are on the top surface of the package, the proper performance thereof is secured and the package is compact.

Abstract: A wireless telecommunications network is disclosed in which all of the facilities (e.g., wireless switching centers, base stations, etc.) are mobile, and, therefore, are capable of being moved while the system provides wireless telecommunications service to one or more wireless terminals. In particular, the present invention is advantageous in that any or all of the various facilities can move relative to each other without the need to suspend the provision of service. An illustrative embodiment of the present invention comprises: a plurality of base stations in a hierarchical network, wherein: each of the base stations comprises the identity of its filial base stations, if any, and wirelessly communicates with its filial base stations; and each of the base stations comprises the identity of its lineal base stations, if any.

Abstract: A communications interface adapter facilitates both wired and wireless communications between crew members of a vehicle having a wired intercom and has an intercom communications circuit having an input/output port for providing electrical communication between the interface adapter and the wired intercom and also has a fixed radio transceiver. The fixed radio transceiver comprises a receive circuit for receiving radio communications and for communicating the received radio communications via the intercom communications circuit to the wired intercom of the vehicle and a transmit circuit for transmitting communications received via the intercom communication circuit from the wired intercom of the vehicle.

Abstract: The invention relates to a wireless communication device (1) comprising at least: a basic unit (2) with at least one keypad or keyboard (6) for using the wireless communication device (1) and controller for locking the keypad (6) of the basic unit, whereby when the keypad (6) of the basic unit is locked, its operation in connection with the wireless communication device (1) is at least partly prevented, an auxiliary unit (3) with at least one keypad or keyboard (15), and link module (11, 17, 58) for connecting the auxiliary unit (3) in a functional connection with the basic unit (2). The wireless communication device (1) comprises further link module and controller (11, 16) for locking the keypad (15) of at least one auxiliary unit arranged in a functional connection with the basic unit (2) simultaneously with locking the keypad (6) of the basic unit, wherein when the keypad (15) of the auxiliary unit is locked, its operation is at least partly prevented.

Abstract: A method and apparatus is provided that includes equipment for controlling radio link capacity of each of the plurality of compatible radio transmission technologies (112), and equipment (113) for controlling the equipment for controlling radio link capacity of each of the plurality of compatible radio transmission technologies (112) based on a quality metric report (114) that includes information about a quality of radio link between at least one of a plurality of mobile stations and a base station, which provide a global control that effects the way independent equipment (110) and (111) control radio link capacities of their respective transmission technologies.

Abstract: The present invention is a method for porting a mobile directory number of a subscriber from a donor wireless service provider to a recipient wireless service provider with minimum interruption to the subscriber's wireless communication service. In one embodiment, the present invention is accomplished by creating an entry for the wireless terminal in the recipient wireless service provider's home location register and a temporary pointer in the donor wireless service provider's home location register, wherein such temporary pointer will cause the donor wireless communication system to route or forward any call intended for the wireless terminal being ported to the recipient wireless communications system for completion in well-known fashion. When the porting process is complete, the temporary pointer is removed or deactivated in the donor wireless service provider's home location register.

Abstract: A direct conversion receiver comprising mixers for mixing a received radio frequency signal and a local oscillation signal in frequency, a signal processing unit for converting the output signal of the mixers into a baseband signal, a delta-sigma modulator for detecting offset voltage from the output signal of the signal processing unit, a holding circuit for supplying offset canceling voltage for canceling the offset voltage, and a switch of supplying the output signal of the mixers to the delta-sigma modulator during a given period and supplying the offset canceling voltage sent from the holding circuit to the output side of the mixers.

Abstract: In a cellular communication system, a plurality of neighbor scan lists are generated and associated with a selected cell in the cellular communication system, wherein each neighbor scan list includes selected neighbor identifiers. Thereafter, a present operating mode, of a plurality of operating modes, of a subscriber unit communicating with the selected cell is determined. In response to the present operating mode of the subscriber unit, the subscriber unit is configured to scan a neighbor scan list selected from the plurality of neighbor scan lists for the selected cell. The operating modes of the subscriber unit may include an idle mode and an active mode.

Abstract: A wireless communication system (100) that includes a plurality of base sites (101-103) employs a method and apparatus for determining a location of a communication unit (107) in the system. Upon transmission of an information signal (109) by the communication unit, each of the base sites receives the transmitted information signal. A serving base site (e.g., 103) determines a stream of information symbols from the information signal, derives timing information based on the information signal and the stream of information symbols, and conveys the stream of information symbols preferably to at least two non-serving base sites (101-102). The non-serving base sites determine respective timing information based on the information signal received from the communication unit and the stream of information symbols received from the serving base site.

Abstract: In an AGC system, a high-speed convergence of an AGC is provided at a burst signal head for an aperiodic burst signal inherent in a base station, having irregular transmitting power from a mobile station, and transmitting power is controlled and a receive of an interference wave is detected for a periodic burst signal according to the presence or absence of voice at the mobile station, thereby preventing an erroneous control of the AGC and maintaining communication quality in a radio base station system. In case of the aperiodic burst signal, a receive level is detected at high speed by, in an attenuator and an AGC amplifier serving as a gain control device, setting the AGC amplifier with a slower transient response to a fixed gain, and turning ON/OFF only the attenuator with a rapid transient response. In case of the periodic burst signal, a synchronous word contained in the burst signal is used to prevent the erroneous control and detect interference in the AGC.

Abstract: In an information distribution system having mobile users, a method of distributing communication channels to mobile users includes transmitting information signals including at least one of Web related information and Internet related information received via one ore more of the Internet, ADSL, another mobile, a land-based user, and the at least one information service provider. The method also includes receiving the information signals from one or more of the Internet, ADSL, another mobile, a land-based user, and the information service provider in the receiver of the mobile terminal, and storing the information signals in its entirety in the mobile terminal prior to broadcasting and/or displaying same to the mobile user. The method also formats, broadcasts and/or displays the information signals after being stored in the mobile terminal.

Abstract: In an information distribution system having mobile users, a method of distributing communication channels to mobile users includes the steps of receiving information signals including at least one of voice, data, and electronic mail signals broadcast from an external source in the receiver of the at least one mobile terminal, and storing the information signals in its entirety in at least one mobile terminal prior to broadcasting same to a mobile user. The method also includes the steps of controlling operations of the at least one mobile terminal, formatting the information signals for broadcasting after being stored in the at least one mobile terminal, and broadcasting the formatted information signals to the mobile user of the at least one mobile terminal.

Abstract: A method (200) and device (100) provide an efficient linear power amplifier that generates a variable-envelope radio frequency RF signal. The method includes the steps of: A) using an efficient envelope-following unit to output a supply voltage in accordance with a variable envelope of an input baseband signal, wherein using the efficient envelope-following unit includes: 1) using a bandwidth-limiting mapping unit to determine a reference signal based on the baseband signal; and 2) using an envelope-tracking power converter to output a supply voltage, responsive to the reference signal, to the linear RF power amplifier; B) providing an RF input signal with amplitude and phase information to a linear RF power amplifier; and C) using the linear RF power amplifier to output a power-efficient amplified variable-envelope RF signal with substantially a same amplitude and phase information as the RF input signal.

Abstract: An arrangement for measuring a condition of an antenna in a mobile telephone system has a radio equipment and a transmission line connecting the radio equipment to the antenna. The transmission line has opposite end sections, whereby one of the end sections of the transmission line is closer to the antenna than the other of the end sections of the transmission line. A masthead amplifier is at the one of the end sections of the transmission line, the masthead amplifier having first and second duplex filters, an RX branch, a TX branch and an amplifier element in the RX branch, wherein the RX branch, the TX branch and the amplifier element are between the duplex filters. The standing wave ratio is measured and a measuring value calculated therefrom within the one end section of the transmission line for measuring the condition of the antenna.

Abstract: A method and apparatus for wireless location finding determines a set of likely locations from a signal covariance matrix R, a set of array calibration vectors {a(.theta.)}, and a set of calibrated signal covariance matrices {R.sub.k } corresponding to calibrated locations. From these quantities, an angular energy distribution function B(.theta.) is calculated from R and a(.theta.), and compared to a set of calibrated angular energy distribution functions B.sub.1 (.theta.), . . . , B.sub.N (.theta.) corresponding to the set of calibrated signal covariance matrices R.sub.1, . . . , R.sub.N. The function B(.theta.) is then compared with each of the calibrated functions B.sub.1 (.theta.), . . . , B.sub.N (.theta.) to determine those calibrated functions that most closely match the calculated function B(.theta.). From these calculations a set of likely locations is then determined.

Abstract: An improved receiver architecture utilizing active filters for frequency conversion, wherein the final IF stage operates at a frequency higher than the previous IF stage, is disclosed to facilitate the processing by a baseband system operating at higher IF of signals from receivers operating at lower IFs and to enable the continued use of existing post-IF devices with multiple-conversion receivers. A low IF signal output is digitally mixed with a divided local oscillator signal to achieve a higher IF which is suited for processing by post-IF components such as a detector. The mixed signal is then filtered by a low dynamic range active filter and limited.

Abstract: A technique for transmission of wireless signals across CDMA radio links. Bandwidth is allocated dynamically within a session to specific CDMA subscriber unit based upon data rate determinations. Specifically, a dynamic bandwidth allocation algorithm operates from limits calculated based upon available ports per subscriber, expected user bandwidth, and parallel user bandwidth versus throughput. Provisions for priority service, unbalanced forward and reverse spectrum utilization, voice prioritization, and band switching are also made.

Abstract: The present invention relates to water-exposure protection of electronic circuitry within a mobile radio communication device such as a mobile cellular telephone. A water-absorbent packing is disposed around buttons or keys which extend through openings in the housing. The packing is able to absorb several times its volume of water. The water-absorbent packing absorbs the water as it enters the housing, thus stopping the further ingress of water and protecting the electronic components in the housing. Once the water source has been removed, the water absorbed by the material will evaporate restoring the full absorption capacity of the material.

Abstract: Provided is a radio selective calling receiver that can instantaneously confirm the number of received messages, so that the time required for confirmation can be saved and the calculation of a fee is easy when a frequency-based fee service is utilized. A radio unit receives a radio signal that includes an identification signal and an information signal; a controller compares the identification signal with its own identification signal to confirm that the radio signal is for the controller, and extracts the information signal from the radio signal to specify the time at which the radio signal was received; an LCD is used to display information including the information signal or the time using a plurality of display forms; and a storage means counts a number of the radio signals received and stores the count number. The count number of radio signals received is displayed in a specific count display area of the LCD.

Abstract: A method for reducing multiple dominant pilots in a CDMA communication system comprises determining nulls of a first cell and pointing a sector antenna of a neighboring second cell towards one of said nulls of the first cell. A system is also described.