Abstract: An intelligent device controller (hub 100) for communications-enabled (“intelligent”) devices (120-140) implements a private network (102) of the devices, facilitating communications to and from only those devices that have been registered with the controller. Each device comes with a memory card (220) that stores interface programs for and information-including a unique device ID-about the device. A card reader (202) of the controller reads the memory card to register the device. Communications between the controller and the device are encrypted using the device ID as the encryption key. The private network is either based on standard building wiring or preferably is wireless to enable deployment and relocation of devices easily and,without need for a special infrastructure.

Abstract: In a radio transceiver operating in a time division duplex system, a cancellation use transmission signal which is reverse in phase and equal in amplitude to a leakage transmission signal from an antenna in the signal transmission is supplied to an input port of the receiving amplifier of a receiver connected to an antenna system applied in common to the signal transmission. The transmission signal is fed via a circulator, which separates a transmission and reception path, to the antenna. The leakage transmission signal from the antenna is inputted via the circulator to the receiving amplifier. The cancellation use transmission signal is fed to the receiving amplifier via a second circulator which distributes the transmission signal and cancellation use signal disposed at an output side of the transmitting amplifier.

Abstract: A proximity service unit for providing at least one predetermined service for use with multiple types of wireless devices. The proximity service unit includes a multiple channel wireless transceiver, a proximity unit validation assembly, and a legacy activation unit. The multiple channel wireless transceiver receives at least two signal types, such as infrared region signals, 900 MHz region signals, 1.8 GHz region signals, and 2.4 GHz region signals. The multiple channel wireless transceiver receives a request authorization code from each of a plurality of respective wireless devices such that the plurality of wireless devices communicate simultaneously with the multiple channel wireless transceiver without air time. The proximity unit validation assembly communicates with the multiple channel wireless transceiver and receives and validates the plurality of request authorization codes received by the multiple channel wireless transceiver.

Abstract: A system and method for automatic frequency planning in a wireless communications network is disclosed. The method determines frequency isolation between a first and second cell of the wireless communication network. The method broadcasts a first frequency in the first cell and a second frequency in the second cell. A mobile unit operating in the first cell measures both the first and second frequencies and reports the measurements using a mobile assisted handoff (MAHO) procedure. In some embodiments, the mobile unit repeatedly measures and reports the first and second frequencies. The difference between the first and second frequency is stored in an isolation matrix and analyzed to determine the frequency isolation.

Abstract: Information transmitted from an information origin is transferred from one mobile station to another. At this time, in the mobile station, the transmission of the information is controlled so that the information is not transmitted to a distance more than a predetermined value from the position of the information origin. A valid period of the information is defined and only the information within the valid period is transmitted. Alternatively, controls are carried out in order to avoid overlapping of the transfer paths and detours of them. Particularly, if a density of the mobile stations becomes high, the quantity of the information to be transferred increases tremendously. Therefore, it is necessary to select and limit the information to be transferred. If the mobile station is a portable information terminal and a personal user has this portable information terminal, the information origin is a retail store and transmits special sale information and the like as well as position information.

Abstract: A telecommunication system incorporates individual station instruments simplified by wireless operation, voice dialing, prepaid accounting and out-call operation, all enabled by cooperative system operation including supporting central equipment. Wireless operation of the central equipment involves a multiple port wireless platform along with other units for interfacing a multitude of mobile station instruments simultaneously for interactive audio communication to, regulate control, monitor and record operations of the instruments, and bridge communication with selected remote terminals through the public switched telephone network. Message capability, emergency abort to an operator station and security features supplement the basic system. Communication is controlled for the individual instruments to be either voice or dial-up signals. Voice recognition units alternatively are located in the central equipment and/or the individual station instruments and controlled accordingly.

Abstract: A method of finding a mobile wireless communications device when an Internet Protocol (IP) packet from a remote user is sent to the device over an IP network. The mobile device does not have to register with the IP network in order to receive the IP. The method comprises the steps of receiving the IP packet at a home agent associated with a wireless communications network. The IP packet includes an IP address assigned to the device. If there is no current mobility binding record for the mobile device, instead of dropping the packet the home agent sends an access-request packet, containing the IP address, to an authentication server. The authentication server, e.g., a RADIUS server, maintains a table mapping the IP address for the device to an identification number uniquely associated with the device, such as the device's International Mobile Subscriber Identity number.

Abstract: A mobile communication system with a portable telephone capable of automatically switching between a ground communication system and a satellite communication system, in which when the ground satellite system is not available and the portable telephone is in a place where a satellite from the satellite communication system cannot be observed, a signal process operation is switched in such a manner that an RF signal is processed by the ground communication system, and both of an IF signal and a baseband signal are processed by the satellite communication system; and a relaying apparatus for performing a converting operation of the RF signal in the satellite communication system and the RF signal in the ground communication system. The ground communication system and the satellite communication system can be automatically switched to be used without replacing the antenna/radio frequency units.

Abstract: A routing system of call connection and call routing for radio telephone communications system including cellular radio systems wherein the mobiles transmit on channels in a first band. and the bases transmit on channels in a second band. The routes are selectable from more than one possible route to a desired destination using routing tables to permit different destinations for different calls selectively based on telephone number indications. The system includes multiple blind nodes that do not support direct base to mobile communication. The blind nodes transmitting in the band used for transmission by the mobiles, and nodes receive in the band used for receiving by the mobiles such that the system performs in a limited number of bands of frequencies.

Abstract: A directional antenna system includes several antenna elements, a phase shift/attenuation circuit, and a switching system. The circuit synthesizes four antenna patterns which are oriented toward the front, back, left, and right sides of a vehicle. The system switches between antenna patterns depending upon received signal strength at any particular moment.

Abstract: The present invention coordinates paging, network restriction, and other network-based communications (e.g., mobile measurement requests for O&M) in a mobile telecommunications network. Paging messages, network messages, and other messages may be consolidated in one message so that the mobile need only power up once to retrieve the various information provided in the one message. In one example, non-limiting embodiment, paging groups of mobile stations and network access restriction groups of mobile stations are merged into a single set of paging and network access restriction groups to which different mobile stations belong. A mobile station therefore need only process one message in order to be informed about paging and network access restriction information pertinent to that mobile station.

Abstract: An improved satellite communication device and system are provided. The satellite communication device uses yaw or roll-yaw steering to linearize angular track of uplink cells; one-dimensional linear “ratcheting” in an uplink antenna to maintain resource allocation of uplink cells along antenna columns; phased-array downlink antennas which can track earth-fixed downlink cells while compensating for the yaw (or roll-yaw) satellite steering; and variable rate TDMA service among downlink cells in a footprint. As a result, system overhead for performing new resource allocations between satellite handovers is minimized, thereby reducing resource management and increasing system capacity. Flexible bandwidth/capacity assignment of both uplink and downlink resources to earth locations via linear cell ratcheting, uplink RF peaking switch, and data-driven variable-TDMA downlink phased-arrays, is provided.

Abstract: An improved home location register (HLR) that includes a switch capability mediation module for implementing switch capability mediation between different mobile switching centers (MSCs). According to the invention, when one MSC (home MSC of a receiving party) attempts to communicate with another MSC (serving MSC) via the HLR serving the home MSC, the mediation module determines whether the two MSCs are provided by different vendors and whether they implement different capabilities, based on the MPCM (MSC ID Point Code Map) file records of both the originating and serving MSCs. The MPCM files store MSCs' network configuration information.

Abstract: A radio local loop (RLL) system which can automatically reallocate fixed subscriber units to a different radio domain without expending the costly and time consuming efforts needed to manually readjust antennas. By transmitting a code to the fixed subscriber unit, whereby the code identifies a second radio domain, an antenna associated with the fixed subscriber unit automatically adjusts such that said subscriber unit can communicate with the second domain using a radio channel. While the scan angle of the antenna is adjusted, the fixed subscriber unit derives a signal quality value for a number of radio channels. Based on the signal quality values, the RLL system determines whether the second radio domain exhibits superior signal quality characteristics as compared to the first radio domain. If the second radio domain exhibits superior signal quality characteristics than the first radio domain, the fixed subscriber unit is reallocated to the second domain.

Abstract: A low-noise, linearized double-balanced active mixer circuit is described, including a first input for a local oscillator (LO), a second input for an intermediate frequency (IF) signal, and an output for a resulting product radio frequency (RF) signal. The mixer circuit also includes a feedback transformer circuit for the purpose of improving the intermodulation (IM) performance. The lossless nature of the feedback topology gives the active mixer a lower noise figure (NF) characteristic than is realizable with conventional methods. According to a further embodiment, the mixer circuit includes an additional pair of complementary amplifier transistors for the purpose of further improving the IM performance.

Abstract: A processor controlled FM receiver implements a technique for reducing adjacent channel interference without requiring additional components. Initially, the technique determines whether a desired channel has interference. If so, signal information on adjacent channels is collected. The desired channel is then shifted away from one of the adjacent channels if the collected signal information indicates that only one of the adjacent channels is appreciably interfering with the desired channel.

Abstract: A method of handling an event by a plurality of consoles includes the steps of receiving an event (519) at a communication system and displaying the event at the consoles (101 and 117), wherein the event is displayed (525) using a first manner of display on each of the consoles (101 and 117). When the event is recognized (505) by a first console (101 and 117), the event is displayed (509) on the first console using a second manner of display in response to the recognition, and each of the consoles that is not the first console continues displaying (525) the event using the first manner of display. After the event is responded (511) to by a second console, the event is displayed (527) on the consoles using a third manner of display. After the event is responded to, the event is deleted (515) by a deleting console, and the event is displayed (533) on the consoles that is not the deleting console using a fourth manner of display and the displaying of the event is discontinued on the deleting console.

Abstract: Various methods for effectively detecting the discontinuous transmission (DTX) mode are provided both from the physical layer perspective and from the medium access layer (MAC) perspective. The DTX mode transmission on reverse supplemental channels is detected by comparing a transmitted and a received power ratio of a pilot channel and a supplemental channel. For a reverse link communication, the DTX mode transmission is detected on dedicated control channels. The DTX mode transmission on a forward link supplemental channel can also be detected by monitoring both the transmitted and received power ratios of a primary power control channel and the supplemental channel. As an alternative to or in combination with the above mentioned methods, in order to monitor the DTX mode, a new network parameter is introduced which requires a change in the IS-2000-3 standard. This parameter acts as an indicator signaling to a receiver, from the MAC layer, that the transmitter has entered into the DTX mode.

Abstract: Frequency translation and applications of same are described herein. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, enhanced signal reception, unified down-conversion and filtering, and combinations and applications of same.

Abstract: In a mobile telephone apparatus corresponding to dual-band provided with an RF power module to operate in two kinds of different frequencies, a common harmonics control circuit is provided to the output circuit of such RF power module to realize higher efficiency in view of controlling respective harmonics power for both band frequencies. Moreover, a means for selectively setting the bias is also provided so that the maximum efficiency can be attained depending on the output power required with respective communication systems with the bias control signal output from the CPU of the control unit interlocking with selection of frequency of the mobile telephone apparatus body.