Abstract: The present invention provides a method for finding the location of a mobile device user, and using the location to customize the information and to determine the way of delivering such information to the user. The mobile device user may request the information either with an interactive series of one or more requests, or by pre-selecting the type of message to be delivered. The customized information is transmitted only to the mobile device from which the request is originated. It can also be displayed at a public display unit (such as an electronic billboard), sent to a public broadcaster, posted on the Internet, or sent to a fax machine or a modem. The present invention also provides a method for determining traffic density and speed information that can be continuously updated. The traffic information together with a variety of traffic services can be transmitted to mobile devices users, displayed at inanimate devices (such as electronic billboards), publicly boradcasted, or posted on the Internet.

Abstract: Apparatus, and an associated method, for utilizing a Bluetooth-compatible access point and mobile stations of a WLAN (Wireless Local Area Network) system. A manner is provided by which to increase the number of mobile stations capable of communicating with an access point at any particular time during operation of the WLAN system. Limitations associated with a maximum of communication devices capable of forming a single piconet are obviated as additional piconets are defined, as required, to accommodate increased numbers of mobile stations to communicate with the access point of the WLAN system.

Abstract: A direct conversion circuit for radio frequency signals is disclosed. The circuit includes a pair of quadrature related mixers, a phase shift unit, and a local oscillator. The pair of quadrature related mixers is coupled to a radio frequency signal input port for mixing down a radio frequency input signal. The phase shift unit is in communication with at least one of the pair of mixers for phase shifting a local oscillator signal. The local oscillator produces the local oscillator signal. The local oscillator includes a non-integer frequency multiplier for multiplying the frequency of a first voltage controlled oscillator signal by a non-integer value to produce the local oscillator signal.

Abstract: There is provided a method of transmitting power control information to a BSC (Base Station Controller) in a BTS (Base station Transceiver System) of a mobile communication system. The BTS receives forward power control (FPC) mode information indicating a low power control from the BSC and transmits the FPC mode information to an MS (Mobile Station). Then, the BTS extracts a QIB (Quality Indicator Bit) that is a power control command in a frame period from a reverse pilot channel received from the MS according to the FPC mode information and determines the status of the QIB. The BTS transmits information requesting the BSC to change a threshold for a power control on a forward DCCH (Dedicated Control Channel) based on the determined QIB status to the BSC.

Abstract: A personal communications apparatus, for example a cellular telephone handset, has an antenna diversity arrangement comprising first and second antennas (102A, 102B) arranged with their polarisation axes slanted with respect to the median plane of the handset body (218). By a suitable choice of inclination angles one of the antennas can be arranged to be substantially vertical in use, whether by right or left handed users, thereby improving received signal strength from a vertically polarised base station. The arrangement also enhances diversity operation, since the correlation between the field strengths received by the antennas is reduced by their relative orientation. When the apparatus is used in a system employing a Code Division Multiple Access (CDMA) techniques, the apparatus preferably includes a 2D Rake receiver for mitigating the effects of multipath fading and interference.

Abstract: An improved wireless network provides intersystem handoffs between existing circuit wireless systems and packet systems. A packet wireless system is enhanced to provide translation between circuit and packet call models. A Media Gateway translates bearer traffic between formats used in each system. The Media Gateway, a Media Gateway Control Function, and an associated Call State Control Function, cooperate to emulate the behavior of a circuit wireless system, so that when interoperating with conventional circuit systems, the packet system appears to be another circuit wireless system. Where necessary, the Media Gateway, Media Gateway Control Function, and Call State Control Function further cooperate to emulate the functions of an anchor MSC of a circuit wireless system.

Abstract: A radio communication system of this invention includes: terminals for sending a connection request through broadcast, detecting a reception condition when a connection request echo sent back is received as a terminal reception condition and sending it through broadcast; plural repeaters for detecting a reception condition when the connection request is received as a repeater reception condition, sending a connection request echo including this repeater reception condition and sending back a terminal reception condition echo to a master repeater when it receives a terminal reception condition; and a master repeater for when receiving the connection request echo and terminal reception condition, selecting a repeater securing an optimum communication state based on the repeater reception condition and terminal reception condition.

Abstract: A system and method providing a wireless broadband connection between base stations and customer sites. The system includes indoor units, within the base stations and customer sites, that communicate across cables to outdoor units. The indoor units link to routers, switches and other devices and services. The outdoor units transmit and receive wireless data and send it to the indoor units. The indoor units control the functioning of the outdoor units by transmitting digital messages along the interface cables. The outdoor units report various detector values to the indoor units, which allows the indoor units to tune and adjust several functions within the outdoor units. Several embodiments for automatically calibrating the receive path gain in the base stations to compensate for the base station cable between the indoor unit and outdoor unit are described. In addition, an improved transmit power control technique which is not affected by modulation type, is also described.

Abstract: A processing unit with balanced outputs transfers a received digital signal to an amplification unit with balanced inputs and outputs. A control unit enables or disables the processing and amplification units in response to a power up/power down signal. To prevent disturbances due to power up/power down transients from appearing in a speaker connected between the outputs of the amplification unit, switches are provided between the outputs of the processing unit and the inputs of the amplification unit. A delay circuit generates according to a predetermined timing program enabling/disabling control signals for the processing and amplification units, and generates control signals for the switches.

Abstract: A method and apparatus for forward and reverse power control in a mobile telecommunication system, wherein the transfer of power control data between a multi-mode demodulator board assembly and multi-user modulator board assembly installed in a base station is implemented on the basis of an independent power control bus, resulting in the occurrence of no time delay during the power control data transfer. Therefore, a mobile station is reduced in power loss, thereby enhancing the quality of speech.

Abstract: A method and apparatus for reducing power consumption in a network device (104, 105, 106, 107) is provided. A network device (104, 105, 106, 107) is placed in a quiescent mode and scheduled to switch to an active mode at a scheduled time. At the scheduled time, the network device (104, 105, 106, 107) is activated. A control message (402, 403, 404, 405) is received by the network device (104, 105, 106, 107). The control message (402, 403, 404, 405) includes an indication as to whether or not the network device (104, 105, 106, 107) should remain in the active mode in preparation of receiving a data message (608, 609). If the control message (402, 403, 404, 405) indicates that the network device (104, 105, 106, 107) need not remain in the active mode, the network device (104, 105, 106, 107) sets a new scheduled time and returns to the quiescent mode.

Abstract: A digital memo recorder in a vehicle for recording/play-back of messages and tagging the messages for future reference. The digital recorder is microprocessor controlled to allow direct sequential access for playing back messages. An auditory and visual indication reminds a user of stored messages. Vehicle performance characteristics may be stored as message reminders for future reference. A communications medium couples the digital recording device to the various vehicle functions for courtesy retrieval. The communications medium may be both hard-wired and wireless.

Abstract: A method synchronizes signaling messages and multimedia content loading at a callee terminal. A first signaling message transmitted from a caller terminal to initiate a multimedia session establishment is processed to detect, in the first signaling message, information indicating that the multimedia content should be presented in synchronization with a second signaling message necessary to session establishment. The multimedia content is downloaded and presented in accordance with the information indicating that the multimedia content should be presented in synchronization with said second signaling message necessary to session establishment. The second signaling message necessary to session establishment is delayed until after the step of downloading and presenting the multimedia content in accordance with the information indicating that the multimedia content should be presented in synchronization with the second signaling message is completed.

Abstract: A transmit power load balancing technique in accordance with the present invention is used to increase the overall communication capacity of a radio communications system without incurring substantial, additional control signaling. An overloaded connection in a first cell serviced by a radio network is detected, and a second nearby cell which is not overloaded is identified. For a radio user node that has a connection with the radio network, radio transmission from the first overloaded cell is prevented or at least avoided in the downlink direction from the radio network to the radio user node. Instead, a radio transmission associated with that connection is established or otherwise permitted from the second cell in the downlink direction to the radio user node. In a preferred, non-limiting, example embodiment, the prevented or avoided downlink radio transmission is a traffic transmission.

Abstract: A pass band flatness correction circuit for improving flatness of a ripple occurring within a pass band in a band pass filter and a mobile telecommunication repeater system is provided. The pass band flatness correction circuit includes a complementary band pass filter having a pass band transfer characteristic producing a counter-ripple of a reverse shape to a ripple in a pass band of a main band pass filter, for flattening a total of pass band transfer characteristics of a filtering system, an amplifier circuit for enhancing an increase in a filter insertion loss, and an attenuator circuit for enhancing a reflection loss characteristic of the whole circuit. The flatness and a stop band attenuation characteristic of the band pass filter whose pass band flatness is distorted and a repeater system employing the band pass filter is enhanced, to thereby improve performance and speech quality of a mobile telecommunication service.

Abstract: In a cellular telecommunications network, a method and a cell radio controller for reducing Out Of Band radio Emissions (OOBEs) generated by cellular transmissions into downlink radio channels of a coexisting radio network, such as the police radio network. The invention detects an uplink transmission of the coexistent network radio terminal, and measures its transmitting power level. If the power level exceeds a predetermined threshold, then the downlink radio channel associated with the radio transmission is determined, and further it is determined the cellular downlink channels that create OOBEs that interfere with the downlink radio channel of the coexistent system.

Abstract: The interoperation between UMTS and GSM in the handover context includes the following method steps. An authentication vector is first generated by the UMTS HLR/AuC and various UMTS authentication parameters (XRES, CK, IK and AUTN) are derived. The authentication vector is distributed, depending on the type of VLR that requests authentication vectors, whether it is a UMTS VLR or a GSM VLR. The UMTS user is authenticated either in UTRAN or in GSM BSS. When a UMTS user is attached through a UTRAN, the controlling VLR initiates UMTS authentication and key agreement. When a UMTS user is attached through a GSM BSS, the controlling VLR initiates GSM authentication and key agreement. This is done using a UMTS authentication vector or a GSM authentication vector, depending on the type of VLR controlling the GSM BSS. The user is then handed over from one system to the other.

Abstract: A remotely operated wireless video/audio hand-held monitoring system comprises a central station having a display and a speaker, and at least one remote terminal having a camera and a microphone. The central station is adapted to send out control command data containing a remote terminal identifier, a communication frequency channel number and any one of a test command, a power on command and a power off command, to receive response data corresponding to the control command data and to reproduce video and audio signals transmitted at a frequency corresponding to the communication frequency channel number, respectively, through the display and speaker in response to the received response data.

Abstract: The invention provides a system for monitoring access to a service available via a telecommunications terminal connected to a telecommunications network, access to the service being subject to paying a subscription. The system includes: a unit configured to detect refusal of access to a service because there is no subscription to that service, a unit configured to prepare an electronic message following said access refusal, the message identifying the service to which access has been refused and the subscription enabling said terminal to use the telecommunications network to which the terminal is connected, and a unit configured to send the prepared message to a unit for monitoring attempts to access services to which there is no subscription.

Abstract: A signal amplification system independently adjusts the relative phase and/or amplitude between the signal components and/or the relative phase and/or amplitude between the distortion components to improve the combination of corresponding components. For example, a signal amplification system has first and second amplifier paths carrying replicas of signal components. On the first amplifier path, a first amplifier amplifies signal components and generates distortion components. A replica of the amplified signal components and distortion is provided to a coupling path. On the coupling path, the distortion components are isolated by canceling the signal components, and the distortion components are then amplitude and/or phase adjusted without a corresponding adjustment to the phase and/or amplitude of the signal components. The adjusted distortion components are coupled onto the second path where the signal components and the adjusted distortion components are amplified by a second amplifier.