Abstract: This invention is directed toward improving the subjective voice quality of a mobile to mobile phone call having tandem vocoder processing by modifying the spectrum of the voice signal before it is processed by the second vocoder to compensate for digital distortion which is generated by the second vocoder. An adaptive filter can be used to modify the spectrum of the voice signal. With this invention, the voice quality of a call from a first mobile phone to a second mobile phone has a quality that is substantially similar to the voice quality of a call from a mobile phone to a desk phone.

Abstract: A method is described for testing a train control system configured to control at least two locomotives. The train control system includes a control unit on each locomotive and is configured to control the locomotives using communication links between the control units. The method includes establishing communication between a testing device and a first locomotive control unit, and emulating a second locomotive control unit using the testing device. The testing method allows control system testing to be performed using a hand-held testing device in place of a second locomotive and facilitates testing of repeaters.

Abstract: An information processing device (10) includes first (12) and second (13) wireless communication units, and a communication monitoring and controlling unit (11). When the first communication unit is communicating with another information processing device (20), the monitoring and controlling unit monitors the communication state of the second communication unit and adjusts a transmission condition of a wireless transceiver of the first communication unit based on the monitored communication state of the second communication unit. When the second communication unit establishes or maintains a connection, the transmission power of the transceiver of the first communication unit is lowered, and when the transceiver of the second communication unit neither establishes nor maintains a connection, the transmission power of the first communication unit is at a higher level.

Abstract: A repeater system combines co-located antennas, limited and controlled downlink signal amplification, stability management and an amplification indicator to create a user-installed solution to co-channel interference within cellular systems, in strong signal environments such as elevated locations or high-rise building. The invention may be particularly relevant to cellular systems, such as CDMA, that allow limited imbalance between uplink and downlink path losses, thus enabling the design of an inexpensive downlink repeater which creates moderate signal amplification for selected line-of-sight signals, defeating co-channel interference over a small area. Signal amplification is maintained at a level below the capacity of the system to support imbalance, guaranteeing reliable cellular calls.

Abstract: A wireless signal repeater having an integrated display that concurrently displays a receive signal level, a transmit signal level, and a textual indication of signal quality, reflecting how well the repeater is currently operating to repeat wireless signals. By reference to the integrated display, a user can readily determine whether the repeater is well positioned to function as desired. And if the display indicates that the repeater is not functioning optimally, the user can then conveniently move the repeater around until the repeater reflects an acceptable level of operation.

Abstract: An apparatus for testing a cellular phone comprising an RF signal generator (122) for transmitting an RF signal (RF10) to said cellular phone, said RF signal generator receiving an input digital signal (DSIG10) which determines the characteristics of the RF signal, means (112, 116) for providing said input digital signal comprising means for receiving a digital signal (DSIG4, DSIG5), and at least one set of digital means, each set (A, B, C) of digital means comprising: a first digital means (200, 201, 202) to provide a first digital signal element relating to a first characteristic of said RF signal, and a second digital means (MA, MB, MC) to provide a second digital signal element relating to a second characteristic of said RF signal, and a means (203) to combine said digital signal elements to provide said input signal to said RF signal generator, said first, second and third characteristics comprise phase, amplitude and delay respectively.

Abstract: A method of transferring data signals between a primary station (10) and secondary stations (SL1 to SL5) of a master/slave radio network, comprises the primary station assigning the secondary stations to a plurality of categories (Z1, Z2). The primary station transmits beacon signals containing indications of those categories of the plurality for which it has data to be transferred. A secondary station operating in accordance with a wakeup sequence receives the beacon signals and determines if there is an indication of its category in a received beacon signal. If so, it transmits a request including an indication of its identity. The primary station checks to see if it has a data packet for the identified secondary station and, if it has, it transmits the data packet and, if not, it transmits a negative acknowledgement. Those secondary stations not participating in the exchange of messages can revert to a sleep mode thereby saving power.

Abstract: A method of providing information to a user at a remote terminal (12) is described. The method comprises the steps of: receiving from the remote terminal (12) status information relating to an irregularity in the remote terminal; determining from the status information what action may be required to resolve the irregularity; identifying an agent capable of performing the action; transmitting the status information to a portable device (50) associated with the agent to inform the agent of the irregularity; and allowing the portable device (50) to access a repository containing operational information for presentation to the agent.

Abstract: A method of relay transmission in a mobile communication system. The mobile communication system includes at least one base station and a plurality of user equipment units (UEs). When one of the UEs attempts to send a message to the base station, this one of the UEs, referred to as a requesting UE, is capable of using the method of relay transmission to send messages to the base station via another one or more UEs, referred to as relay UEs. The method of relay transmission includes the following steps. First, a relay request confirmation procedure for the requesting UE and the relay UE is performed. Second, a base station confirmation procedure for the requesting UE, the relay UE, and the base station is executed. Next, an identity authentication procedure for the requesting UE, the relay UE, and the base station is performed. After that, a relay start confirmation procedure for the requesting UE and the relay UE is executed.

Abstract: An approval test apparatus according to the present invention that perform an approval test for a software-defined radio terminal based on approval information for a representative terminal as a database. The radio terminal outputs a request signal of adding the wireless functions and identification information of the radio terminal. The approval test apparatus determines whether or not the approval is given to the radio terminal that has outputted the request signal and the identification signal.

Abstract: A navigation-satellite receiver support data network comprises a server connected to the Internet to provide initialization information to clients for faster cold starts. The server includes a GPS receiver that provides for tracking of a constellation of navigation satellites. When a client is started cold, time and frequency are initially unknown to it. Test messages are sent back and forth over the Internet and a path delay time is computed from the average of the quickest transit times. This yields the offset time between the server's time system and the client's time system. The server sends current time information to the client, and the computed path delay is added. The client can then compute correct time from the server and path delay information, and thereby select much sooner which satellites are correct to search.

Abstract: An unique arrangement including a so-called timing control order and timing control signals is employed to identify whether wireless terminals are reachable within a base station cell coverage area in a wireless communications system. To this end, detection of a particular wireless terminal being alive and well, and within the cell coverage area associated with a base station is effected by the base station transmitting a timing control order in a timing control time slot reserved for the particular wireless terminal. If the particular wireless terminal receives the timing control order, it transmits a prescribed timing control message at a prescribed time. If the base station does not receive the timing control message, it is an indication that communication with the particular wireless terminal has been lost.

Abstract: An active antenna power interface circuit couples a supply voltage from a radio receiver to an antenna feed. The circuit comprises a DC power input and a power switching element connected in series between the DC power input and the antenna feed. The power switching element has a control input for selecting a conducting state or a nonconducting state of the power switching element. A high side voltage sensor senses a first voltage proportional to a voltage at the DC power input. A low side voltage sensor senses a second voltage proportional to a voltage at the antenna feed. A controller is coupled to the control input and to the voltage sensors. The controller places the power switching element into the conducting state, samples the first and second voltages, calculates a voltage difference in response to the first and second voltages, compares the voltage difference to an upper limit and a lower limit.

Abstract: A method of multi-protocol call trace on GPRS Gb and Gr interfaces of a GSM network uses distributed processing. Probes are situated at locations where measurements are desired in a monitored mobile network, such as at Gb and Gr interfaces, and are connected in a non-intrusive manner to the mobile network. A remote server is coupled to each probe over a local area network (LAN) to process data as it is acquired by the probe. The probe and remote server are coupled to a central server via a wide area network (WAN), as are client servers. The remote servers manage the probe data (packet data units—PDUs) in real time to create appropriate transactional and raw data indices that are stored locally with the PDUs. Call/procedure trace applications are initiated from the client servers and disseminated by the central server to the remote servers.

Abstract: A GPS microphone, which is adapted for incorporating a communication system, includes a speaker-microphone set, a radio frequency transmitter communicatively networked with the communication system through radio frequency signals, and a GPS controller electrically connected with the radio frequency transmitter to encode positioning data into one or more RF positioning signals in form of audio signals wherein when the GPS controller is triggered, the radio frequency transmitter is activated to transmit RF positioning signals to the communication system.

Abstract: Transmission bandwidth consumption during the on-hold condition in telecommunications is reduced in a telecommunications system providing communication channels for the transmission of data between system stations. Two bandwidth states for each connecting channel are provided: an active state granting maximum bandwidth for the transmission of data and, for an on-hold condition, a minimal activity state for the connecting channel granting a minimal bandwidth. The active state prevails during the communication unless detecting means detect an on-hold condition in said connecting channel. Then, means responsive to a detection of on-hold condition switch to and provide a minimal activity state for said connecting channel granting a minimal bandwidth.

Abstract: A method of providing wireless communication to a personal communication device in an rf restricted environment. The personal communication device has a radiative antenna. The method comprising: providing a personal communication device with a radiative antenna; providing a first coupler antenna within the rf restricted environment; connecting the first coupler antenna to a second antenna mounted on the outside of the rf restricted environment through a computer controlled circuit arranged therebetween; wirelessly connecting the first coupler antenna with the radiative antenna of the personal communication device within the rf restricted environment; monitoring communications of the personal communication device at any point between the first coupler antenna and the second antenna; and billing for use of the personal communication device within the rf restricted environment. The personal communication device may be a cellular telephone. The personal communication device may be a laptop computer.

Abstract: The present invention relates to a wireless home automation system having a controller for controlling a broad variety of functions via two ways communication with a plurality of devices. More specifically, the invention relates to an improved and flexible way of routing signals from a controller to a device which includes the building of various tables such as routing tables. The improved and flexible way of routing allows the user to reach any device within the network with a high reliability. According to the invention, a processing unit of a controller is adapted to instruct a first device to discover other devices within its range by transmitting a signal comprising a device table holding device identifiers of devices controlled by the controller. The devices in the system are adapted to, upon instruction, perform a discovery of other devices within its range by transmitting discovery signals addressed to each device in the device table received from the controller.

Abstract: A mobile communication system which includes an exchange, a plurality of base stations, and a plurality of radio telephone sets communicatable with the associated base stations. In order to suppress or reduce call loss caused by traffic congestion or by faulty one of the base stations, an uncommunicatable service area of the faulty base station is covered by the other working base stations. The exchange detects operation states of all the base stations, searches a base-station state pattern table within the exchange for base-station control data suitable for the operation states to read out the base-station control pattern, and transmits the read-out base-station control data to the base stations to cause radio service areas of the base stations to be set to have desired radiation patterns according to the read-out base-station control data.

Abstract: A method and apparatus for detecting oscillation in a repeater system is disclosed. More particularly, in one embodiment, a wireless communication device is embedded in a repeater system and is configured to detect if the repeater system is in oscillation. A processor coupled to the WCD is configured to reduce the gain of the repeater system if the repeater system is in oscillation.

Abstract: The present invention relates to wireless communication networks particularly for indoor deployment, in which there typically directly exists a rapidly changing multipath propagation environment with limited opportunities for line of sight wireless communication. The present invention provides A wireless communications network for communicating with a mobile terminal; comprising: a number of repeater points each comprising means for communicating with the mobile terminal; an access point comprising means for communicating with the repeater points; the repeater points further comprising means for relaying signals between the terminal and the access point; means for determining a quality measure of signals sent by the terminal and received by the access point via the repeater points; means for selecting one or more repeater points to relay transmission signals from the access point to the terminal, said selection based on said quality measures of the terminal signals received by the access point.

Abstract: The invention provides a method for establishing communications with a quiescent mobile vehicle. A satellite radio system broadcast channel is monitored for a command signal. The command signal is extracted from the broadcast channel. A cell phone in a telematics unit is powered up based on the command signal.

Abstract: A method, apparatus for reducing errors in a plurality of beacon beams is disclosed. The method comprises the steps of computing quantized channel weights {tilde over (W)}c from channel weights Wc for at least some of the channels; estimating the quantization error &Dgr;Ba for each of the beacon beams from a difference between the channel weights Wc and the computed quantized channel weights {tilde over (W)}c; and adding the estimated quantization error &Dgr;Ba to the beacon beams. Similarly, a beacon biases equivalent to the beacon asymmetry error can be computed by the ground beacon beam forming software and uploaded to the on-board software for error compensation. The apparatus comprises one or more means, such as a processor communicatively coupled to a memory storing instructions for performing these operations.

Abstract: A repeater system combines co-located antennas, limited and controlled downlink signal amplification, stability management and an amplification indicator to create a user-installed solution to co-channel interference within cellular systems, in strong signal environments such as elevated locations or high-rise building. The invention may be particularly relevant to cellular systems, such as CDMA, that allow limited imbalance between uplink and downlink path losses, thus enabling the design of an inexpensive downlink repeater which creates moderate signal amplification for selected line-of-sight signals, defeating co-channel interference over a small area. Signal amplification is maintained at a level below the capacity of the system to support imbalance, guaranteeing reliable cellular calls.

Abstract: A method and system for detecting failures in a wireless communications network. A computer is programmed to remotely access a platform, such as a network switch or database, that stores data indicative of the performance of the wireless communications network infrastructure. The computer downloads the data, parses the data to extract wireless communications network events such as dropped calls, noise or lack of audio, sorts the events, and passes the events through an event-to-failure mapping module to identify probable network component failures. Data is preferably analyzed over periods of less than 24 hours. The probable failures are preferably reported to network operations personnel who can then resolve the failures on a more timely basis.

Abstract: An apparatus and a method for dividing power within a service area serviced by a pico-base transceiver station (Pico-BTS) are disclosed. The apparatus for dividing power in a Pico-BTS includes a repeater for amplifying, by a prescribed degree of amplification, a signal provided by a Pico-BTS main unit, and a power divider for controlling the amplified signal so that it is equally divided within a service area serviced by the Pico-BTS.

Abstract: A Method and System for Emitter Identification Using Transmission Signatures is disclosed. Also disclosed is a system that is able to take in the undemodulated IF of the receiver and perform identification algorithms on that data. The system is further able to perform these functions in real-time and present the operator with an intelligent evaluation as to the identification of an emitter, or the presence of a new emitter. Still further, the system is capable of being fully automated to reduce the processing time to react to the results of the emitter identification. Furthermore, the present invention can feasibly remotely control the emitter identification system over a network and collect the same information from similar systems. In this way, a far more efficient System can be achieved wherein emitters can be determined, tracked, or monitored more quickly from a centralized command facility.

Abstract: The present invention relates to a method and a system for monitoring on-line the condition of a subject, wherein a measuring system is used for carrying out the measurements on the subject. This measuring system is provided with a transmitter for transmitting the signals to a monitoring unit, where the signals are stored. The monitoring unit compares on-line the signals with previous signals and based on the comparison generates a subject related condition signal.

Abstract: From an unusable site, one or more communication units selects a usable site, thereby reducing missed communications. First, a manager determines (201, 401, 601) that a site is unusable for a predetermined set of communication unit(s). The predetermined set of communication units may include one or more individual communication units or communication units that are affiliated with a particular talkgroup at a particular time. A zone controller (104) identifies (205, 405, 605) any communication units from the set that are registered at the unusable site. The zone controller sends (207, 407, 607) a message to the identified units to assist them in leaving the site. The communication units search (303, 505, 709) the near sites for usability and register (307, 515, 713) at new usable sites. An algorithm is provided to stagger registration by communication units at usable sites.

Abstract: A repeater that extends the range of a wireless communication system especially one using Time Division Duplex (TDD) protocols. The device preferably translates signals received on a first radio frequency channel to a second radio frequency channel. The repeater preferably monitors one or more channels for transmissions. When a transmission on one channel is detected, the repeater is configured to translate the received signal to another channel where it is then transmitted. The device thus solves a problem of isolating input and output signal from one another.

Abstract: A radio base station (RBS) reduces the signaling overhead associated with maintaining rapidly updated estimates of transmit power headroom for a plurality of mobile stations. According to an exemplary embodiment, the RBS receives relatively infrequently periodic full reports from each mobile station that include an indication of the current transmit power headroom of the mobile station. The RBS then tracks the changes in the mobile station's headroom over the intervals between full reports based on reverse link power control information associated with the mobile station. The RBS adjusts the stored headroom value based on the reverse link power control commands sent by it, or based on power control decision feedback from the mobile station. In either case, use of the power control information keeps the stored headroom value accurate even over relatively long full reporting intervals.

Abstract: The invention relates to a method of adjusting the radio frequency of a repeater (302) in a cellular radio network. The repeater (302) amplifies radio signals (170) of a bi-directional radio connection between a base station (100) and a subscriber terminal (150) at least at one particular radio frequency. In accordance with the invention, the repeater (302) monitors the radio signals (170) transmitted by at least one base station (100). The repeater (302) automatically tunes to amplify the signals (170) of the particular radio frequency on the basis of information included in the radio signals (170) it has monitored. The monitored radio signals (170) include a control channel, for example a broadcast control channel BCCH, comprising information on the operating frequencies of the base station (100). Monitoring means (404) are preferably similar to a subscriber terminal (150).

Abstract: In an independent basic service set (IBSS) of IEDs, using wireless communications devices to provide license-free two-way wireless peer to peer communications of digital data between pairs of IEDs, and also to provide wireless peer to peer communications between ones of said IEDs and a common access port to the IBSS.

Abstract: A novel customer interaction center server, and a novel method of operating a customer interaction center server, are disclosed. In one embodiment, a network of nodes (each representing one or more subsystem processes) and dependency relationships (indicating which processes depend on what other processes) is used to start the server, and the processes are monitored. In some of these embodiments, a failure of a particular process in the set of target processes is detected and logged and/or handled by implementing a selective shutdown and restart of only a subset of the processes represented in the network, based on the dependency information therein.

Abstract: The present invention generally relates to electronic position and location tracking of various items. More particularly, the present invention is useful for tracking of an individual's position and location. Data is received from both an external position locating apparatus and an accelerometer and is converted into both position and direction of travel information.

Abstract: A method for providing power control to a uplink signal, comprising an uplink station transmitting an uplink signal to a satellite. The satellite also transmits a loopback signal representing the received uplink signal back to the uplink station. The satellite also transmits a beacon signal to the uplink station. The uplink station adjusts the power of the uplink signal based on measurements of the beacon signal and the uplink signal.

Abstract: The present invention relates to a method for adaptively controlling a transmission radiation pattern. Radio signals coming through a plurality of paths are received and demodulated for each path. The received level or received quality of each demodulated signal is compared to each other to select a signal with the highest level or most excellent quality. A path corresponding to a selected path is set at a path for transmission. When a plurality of signals each with an almost equal level or received quality exists in signals demodulated for each path, a history of transmission power control command (TPC) transmitted from a communication partner is referred. In other words, the reception condition in a communication partner is checked. Thereby, it is judged whether or not the currently selected path is appropriate as the path for transmission.

Abstract: A technique for improving the effectiveness of conference calls is disclosed. The present invention is a teleconferencing system that is based upon wireless technology. Access points, one or more per conference area, distribute the audio to and from each participant in the conference area. Wireless terminals are used by the participants to receive audio from other participants that are not collocated and to transmit audio to other participants that are not collocated. The teleconferencing system tracks which participants are collocated with each other versus not collocated with each other and transmits a composite audio signal to each participant.

Abstract: In a method of transmission for radio monitoring via digital mobile communication network, a digital cellular mobile phone with keypad, display and buzzer removed therefrom is used as an apparatus to achieve the radio monitoring. A high-sensitivity audio amplification circuit is added to a microphone in the digital cellular mobile phone and a DTMF decoding IC is added to an incoming call loop of the phone, so that the phone is able to automatically receive an incoming call and send a warning sound to prompt the caller to input a password via keys on the calling phone. The digital cellular mobile phone uses the DTMF decoding IC to verify the input password within a preset time period and enables the high-sensitivity audio amplification circuit to pick up sounds in surrounding field when the input password is verified as correct. Sounds picked up are then transmitted to the caller via the currently available digital cellular mobile phone system to achieve a field monitoring.

Abstract: An automatic ticket checking apparatus of the present invention is arranged along a passage and has a first conveying mechanism which conveys a magnetic ticket in a first direction along the passage and a second conveying mechanism which is arranged facing in the passage direction against the first conveying mechanism. This automatic ticket checking apparatus reads the information recorded on magnetic tickets and wireless tickets and executes the checking process for user who are advancing in the first direction along the passage and further, reads the information recorded on magnetic tickets and wireless tickets carried by users who are advancing in the second direction along the passage and executes the checking process for users who are advancing in the second direction.

Abstract: A radio relay apparatus, a monitoring apparatus, and a method of determining an identification code of the radio relay apparatus enabling rapid formation of a radio communication area. The radio relay apparatus receives the base station identification code from a base station, determines a temporary identification code based on the received base station identification code, and transmits the temporary identification code to the monitoring apparatus. When the received temporary identification code is different from the formal identification codes of other radio relay apparatuses, the monitoring apparatus transmits directly the temporary identification code to the radio relay apparatus; when the received temporary identification code is the same as the formal identification code of a radio relay apparatus, the monitoring apparatus determines an identification code different from the temporary identification code and transmits the determined identification code to the radio relay apparatus.

Abstract: The present invention relates to a method of monitoring the operation of a cellular radio system in a system comprising at least a first base station and a repeater adapted to repeat signals sent by the first base station on traffic channels. In order for the management system to be able to detect malfunction more promptly and easily than before, the method comprises steps in which: the repeater is adapted to receive a traffic channel list sent by the base station, the traffic channels included in the traffic channel list are compared with the traffic channels used by the repeater, and an alarm is given if the traffic channels used by the repeater differ from the traffic channels included in the traffic channel list.

Abstract: When image data obtained by an imaging apparatus such as a digital camera are sent via a wireless communication system, power consumption by a wireless communication apparatus installed in the imaging apparatus is reduced as much as possible. First communication means receives base station information from a base station in a mobile phone communication network, and judgment means judges whether or not a coverage area of the wireless communication equipment exists in a coverage area of the base station, based on the base station information. If a result of the judgment is affirmative, second communication means that carries out data communication is activated, and the image data obtained by photography are sent to the wireless communication equipment.

Abstract: An approval test apparatus according to the present invention that perform an approval test for a software-defined radio terminal based on approval information for a representative terminal as a database. The radio terminal outputs a request signal of adding the wireless functions and identification information of the radio terminal. The approval test apparatus determines whether or not the approval is given to the radio terminal that has outputted the request signal and the identification signal.

Abstract: A method for estimating quality of communications between a transmitter and a receiver over a communications link operable according to one of a plurality of communication modes and with one of a plurality of quality measures, data being carried over the link as a plurality of frames, the method comprising: analysing data received by the receiver over the link to determine the proportion of received frames that are deemed to have been received erroneously; estimating on the basis of that proportion a frame error probability; and storing that frame error probability in conjunction with the one of the quality measures and the one of the communication modes in use over the link.

Abstract: A method of optimizing the search for cells in a mobile telecommunication network comprising a plurality of cells, each cell accommodating one base station exchanging synchronization data with a mobile device UE via a channel SCH, so as to allow subscribers' mobile devices to perform measurements on at least one cell adjacent to the current cell for retrieving a scrambling code specific to the adjacent cell. The method has a step of applying a digital filtering to measurement samples collected in a plurality of time windows so as to give a major weight to measurements performed in the most recent time windows.

Abstract: A cellphone or computer or video camera, etc. id constructed/designed to radiate less harmful/interfering/damaging electromagnetic energy to the immediate user or environment by the use of removeable, and thus remoteable, relay transceivers that would emit most of the signal radiant energy distant from the immediate user or environment.

Abstract: For purposes of servicing emergency calls, such as 911 calls, a telephone number is associated with each edge router port used to provide IP service to a customer premise location. A telephone number is associated with the edge router port and the corresponding customer location. The telephone number and location information are stored in a database used for providing emergency calling party location information. When a switch used for routing IP calls detects a telephone call to an emergency call center it determines the edge router port from which the call was placed and the telephone number associated with the port for emergency call purposes. The call is then forwarded to the emergency call service center with the determined telephone number being supplied as the calling party number. Performing a lookup operation using the supplied telephone number the emergency service operator determines the location from which the call was placed.

Abstract: A proxy switch, communication methods, and communication logic for use in a mobile network are described. A proxy switch is deployed between a base station subsystem and a mobile station center. It receives signaling messages and either retransmits them, blocks them, converts them, or siphons them to an alternative network. Besides providing an ability to offload offload mobile traffic it provides a platform for new communication services. A proxy switch includes signaling message handling logic for receiving signaling messages from the MSC and BS in accordance with said mobile signaling protocol. Message transmission logic issues messages to the MSC and BS. A FSN and a BSN are provided for communication with the MSC, and another FSN/BSN pair are provided for communication with the BS.

Abstract: For use in a switch comprising N call application nodes (CANs), a method of upgrading call process server applications that comprise a primary call process and a backup call process executed on different CANs.