Abstract: A method, an apparatus, and code in a carrier medium to operate in a first access point of a wireless network in communication with at least one associated client station. The method includes wirelessly broadcasting a management frame including an indication that the first access point will stop being active, such that each associated client station can wirelessly roam to a second access point prior to the first access point ceasing being active. One embodiment further includes reducing the transmit power of wireless communication used to wirelessly transmit information to the associated client stations, such that each associated client station can eventually wirelessly roam to the second access point.

Abstract: Consumer configurable mobile communications solution enabling policy-enforcement services allowing authorized users to define, manage and enforce restrictions for voice, data, and mobile Web services of a secondary mobile device.

Abstract: The present invention provides a method and an apparatus for identifying at least one of one or more hidden and visible networks associated with an access point. The method comprises detecting whether a Wi-Fi network is hidden behind a first visible network of the at least one of one or more hidden and visible networks associated with the access point, and if so, selecting the Wi-Fi network to connect an authorized user to a wireless local area network while retaining an ability to select a second visible network from the at least one of one or more hidden and visible networks. In a client-server based communication system, the Wi-Fi network information of visible access points in a particular range may be automatically retrieved. In addition, by defining a group of networks belonging to an access point, and combining the groups of other access points in the vicinity of the client, a hidden network may be selected without an additional knowledge or processing by the authorized user.

Abstract: Whether relative velocity between a transmitter and a receiver is higher than a predetermined amount is detected. This involves using a Doppler estimation technique to generate an estimate of Doppler spread, {circumflex over (f)}D(1), based on a received signal, and using an alternative velocity estimation technique to generate an estimate of velocity, {circumflex over (v)}, based on the received signal, wherein the alternative velocity estimation technique differs from the Doppler estimation technique. A plurality of estimates, including at least the estimate of Doppler spread and the estimate of velocity, are used to detect whether the relative velocity between the transmitter and the receiver is higher than the predetermined amount. The alternative velocity estimation technique may, for example, be a second Doppler estimation technique that differs from the other Doppler estimation technique.

Abstract: A method of adjusting a power level of communications over a channel in a wireless communications network. In the method, a determination (e.g., by a radio network controller (RNC)) is made regarding a number of base stations actively communicating with a mobile station. For example, the determination may indicate whether the mobile station is engaged in soft handoff or simplex mode. One of a plurality of power control algorithms (e.g., a fixed offset power control algorithm, a channel quality indicator (CQI) power control algorithm, etc.) is selected based on the determination. A power level of communications over the channel (e.g., a downlink communications channel to the mobile station) is then adjusted in accordance with the selected power control algorithm.

Abstract: A method and apparatus are provided for call setup in a communication network that comprises at least one mobile station to facilitate the hand-off of a wireless headset from a mobile station that has been docked to a landline base unit that includes a radio front end operable to communicate with the wireless headset. Generally, the embodiments of the invention include establishing a first voice path through at least one switching element between a calling party and a called party in a communication network where at least one of the called and calling parties is communicating with the mobile station or, more generally, with a wireless telephone. Thereafter, a first wireless headset communication link is established between the wireless telephone and the wireless headset unit.

Abstract: A gateway (111, 200) and method for routing calls for a wireless communication unit (113) via a selected network (105, 124, 131) comprises an access point (217) supporting a wireless LAN and a modem (203, 229) for wireless connections to a wireless WAN and an interface 227 with a wired local loop (105). The methodology involves using a first network, such as a local loop if available and a second network, such as a packet data WAN 131 otherwise as well as maintaining the busy status of the first network via the second network.

Abstract: An electronic device has first and second wireless transceiver modules using first and second communication protocol, respectively. Both wireless transceiver modules are coupled between an application layer and an at least partially shared physical layer of the electronic device. The second wireless transceiver module is equipped with a controller to avoid interference with external signals on a frequency used by the second communication protocol. To avoid destructive interference in the physical layer resulting from simultaneous communications from or to the first and second wireless transceiver modules, the electronic device further includes a mediator, which is responsive to an enabled communication involving the first wireless transceiver module, and which feeds a blocking signal into the controller to avoid interference between the enabled communication and a transmission of the second wireless transceiver module.

Abstract: A system, method, and computer readable medium for a mobile origination comprises receiving an origination request message by a main call control (MCC) from a radio call control (RCC), receiving an assignment request message by the RCC from the MCC, receiving a traffic channel assign message by a channel element control (CEC) and by the MCC from the RCC, receiving a call setup message by a selector distribution unit (SDU) from the MCC, and receiving a link active message by the CEC from the SDU.

Abstract: A wireless communication device, known as a mobile station (MS), contains a conventional wireless communication system and further comprises a wireless computer network communication subsystem and may also include GPS capability. The operator of the MS may utilize any or all of these subsystems to determine the current position of the MS. Based on the current position of the MS, location-based services are provided to the MS as sales information, schedules, prices, maps, and the like. In a typical implementation a plurality of computer network access points, or beacons, are distributed throughout a geographic region and used to determine the position of the MS with a reasonably high degree of accuracy. Based on the current position of the MS, the beacons can provide location-based services.

Abstract: The present invention comprises a method and system for dispatching a plurality of mobile service providers among a plurality of users (stationary) based on proximity of a user to a particular mobile service provider. One or more representations of proximity will be presented to a user on a map (radar screen) by the system and the system computes offers based on proximity.

Abstract: The present invention comprises a method and system for dispatching a plurality of mobile service providers among a plurality of users (stationary) based on proximity of a user to a particular mobile service provider. One or more representations of proximity will be presented to a user on a map by the system and the system computes offers based on proximity.

Abstract: A method and system for processing a broadcast SMS (Short Message Service) message in a mobile communication terminal is provided. The system includes a Broadcast Management Task which performs UI (User Interface) control; and a Main Control Task which determines whether or not a Data Burst Message received from the mobile communication system is a broadcast SMS message, and, if the Data Burst Message is the broadcast SMS message, controls such that the Broadcast Management Task performs broadcasting, where the Main Control Task determines whether or not the received broadcast SMS message is a message of a registered broadcast channel, and, if the received broadcast SMS message is not a message of the registered broadcast channel, the Main Control Task does not transmit Bearer Data to the Broadcast Management Task so that the Broadcast Management Task cannot perform unnecessary processes.

Abstract: A communication system in which circuits for generating transmitting-end synchronizing signals and receiving-end synchronizing signals can be realized easily even in the case of a data transmission rate being high and in which power consumption is low. A transmitting-end synchronizing signal selector in a transmitter selects one of a plurality of transmitting-end synchronizing signals with different phases outputted from a transmitting-end synchronizing signal generator on the basis of code-spread data to be transmitted. A transmitting-end signal output unit outputs a radio signal in synchronization with the selected transmitting-end synchronizing signal. A receiving-end synchronizing signal selector in a receiver selects one of a plurality of receiving-end synchronizing signals which are outputted from a receiving-end synchronizing signal generator and which are the same as the plurality of transmitting-end synchronizing signals on the basis of a despreading code.

Abstract: A wireless communications system includes a base station and multiple mobile stations performing wireless communication with the base station in a DS-CDMA scheme. Each of the mobile stations has a transmission unit configured to transmit a timing difference detection packet to the base station, prior to transmitting packet data. The base station has a transmission timing control unit configured to detect a difference in signal receive timing from the mobile stations based on the timing difference detection packet, produce transmission timing control information for each of the mobile stations based on the detection result, and supply the transmission timing control information to each of the mobile stations to cause the mobile stations to adjust the transmission timing of the packet data.

Abstract: A method of detecting extra-system signals in a multi-node RLAN (radio local area network) involves: at each of a plurality of nodes in the RLAN, processing at least one respective received signal to produce detection results and deciding whether an extra-system signal has or has not been detected based on detection results of at least two of the plurality of nodes. The extra-system signal is for example a signal from a RADAR system. The detection results are produced using pulse pattern matching for example. Furthermore, in some implementations a decision as to whether an extra-system signal has or has not been detected is based on a comparison of a detection signature for at least two of the nodes to see if there is a substantial match. In some implementations the decision is further based on information representative of a direction of arrival of respective received signals.

Abstract: The invention relates to a method for controlling transmission power in a radio system, preferably in a radio link system. To establish a power control mechanism which is capable of taking into account the various phenomena affecting the performance of the radio connection and which can also respond to degrading signal quality before bit errors begin to occur, pseudo errors, i.e. decision-making instants at which a symbol error nearly occurred, are monitored at the receiving end. The transmission power is then decreased when the rate of the pseudo errors is below a predetermined threshold and increased when pseudo errors occur so that a predetermined criterion is fulfilled.

Abstract: Methods and apparatus are described for improving convergence time of a reference signal-to-interference (SIR) value calculated in outer loop power control for use in inner loop power control. Instead of considering only error rate information for each transport channel individually, other information, such as quality information from other transport channels and block rate information for the channel, is also considered to determine the reference SIR. By considering such other information, an improved outer loop power control is achieved, thus reducing the power needed for the physical channel and increasing the capacity of the communication system.

Abstract: Each mobile terminal and/or radio base station determines whether a radio base station transmits radio waves of excessive power. Based on determination results obtained by a plurality of mobile terminals and/or radio base stations, a radio-system management server determines whether a certain radio base station transmits radio waves of excessive power. When the certain radio base station transmits radio waves of excessive power, the radio-system management server instructs the certain radio base station to forcefully stop its radio transmission by transmitting a forced transmission-stop control message to the radio network controller that controls the certain radio base station.

Abstract: In a wireless communication system, an apparatus and a method are provided for controlling reverse link interference among access terminals that are power controlled by a sector of a base station. In an embodiment, the maximum effective noise power spectral density is used as a parameter for controlling the level of reverse link loading, by setting a reverse activity bit (RAB) to signal the access terminals to reduce their data rates in order to minimize interference between the access terminals if the maximum effective noise power spectral density is above a predetermined threshold.

Abstract: A transmission power control apparatus is adapted to control a reference value for controlling a transmission power of a mobile terminal equipment based on a reception quality of a plurality of radio access bearers at a base station apparatus, with respect to a physical channel to which the plurality of radio access bearers are mapped, when making a radio connection between the mobile terminal equipment and the base station apparatus in a mobile communication system.

Abstract: When a specified task process may mix with another more highly prioritized task process, it is aimed at accurately calculating a process time for the specified task process. A CPU 11 can simultaneously perform a plurality of task processes such as a task process to display the reproduction time during an audio reproduction process on a display 20 and a task process concerning a telephone call. A DSP 12 performs the audio reproduction process and changes a timing to notify the CPU 11 of information about the audio reproduction time in accordance with loads on the task process in the CPU 11.

Abstract: A mobile terminal which includes a voltage comparing unit that compares a battery voltage to a reference voltage, and a controller that controls a booting operation of the mobile terminal according to the comparison.

Abstract: A transmitter and/or receiver includes a single crystal clock oscillator circuit and a sample rate converter (SRC) that selectively generates samples at an alternative frequency for subsequent transmission or decoding. A 40 MHz crystal provides the clock signal for the digital-to-analog and analog-to-digital converters that are used to convert the samples to and from analog form. In an IEEE 802.11-compatible embodiment, the 802.11a compatible 20 MHz OFDM samples are converted to and from analog form directly, whereas a sample rate converter converts the 802.11b compatible 22 MHz DSSS samples to and from 40 MHz samples to provide compatibility with the 40 MHz analog conversions.

Abstract: A method and apparatus for disabling the communication functionality (i.e., disabling the transmission and/or reception of RF signals) of an integrated device, while still providing access to the local functionality of such device. A control and select function, such as a switch that is implemented by hardware or software or a combination thereof, is provided in an integrated device to allow the end user of the device to access the local data processing functionality of the device, even while the wireless communication functionality of such device is disabled.

Abstract: A device includes an on-chip gyrating circuit that generates a motion parameter based on motion of the device. An RF transceiver generates an outbound RF signal from an outbound symbol stream, transmits the outbound RF signal to a remote station of a wireless network, and generates an inbound symbol stream from an inbound RF signal received from the at least one remote station. A processing module is coupled to process the motion parameter to produce motion data, to convert outbound data into the outbound symbol stream, and to convert the inbound symbol stream into inbound data, wherein the outbound data includes the motion data.

Abstract: The invention provides an IP switching based radio network controller. The radio network controller comprises a plurality of functional modules, at least comprising: an ATM interface module, an interface management module, a radio signaling management module and a radio bearer processing module, characterized in that, the radio network controller replaces an ATM switch with an IP switching network to achieve data and signaling exchange among the above functional modules in the radio network controller. Said functional modules respectively comprise at least one functional board, and the functions of each of the functional modules are respectively achieved in different functional boards. The radio network controller of the invention has the advantages of low cost, simple configuration and management, and easy to achieve the system.

Abstract: Provided is a channel estimation apparatus and method in a broadband wireless communications system using a smart antenna are provided. In the channel estimation apparatus, an FFT processor converts a received time-domain signal into a frequency-domain signal by FFT-processing the received time-domain signal. A channel acquirer estimates a first channel information for an SDMA user using a preamble signal allocated to the SDMA user in the frequency-domain signal. A channel tracker estimates a second channel information for the SDMA user using pilots in a data area allocated to the SDMA user in the frequency-domain signal. A channel estimator estimates a final channel information by weighting the first channel information and the second channel information according to a channel change rate.

Abstract: In one embodiment, a print control system is provided for use in a cellular telephone. A printing logic is configured to generate printer-ready data from a selected data to be printed. A viewing logic is configured to interpret and display the printer-ready data to simulate a printed state of the printer-ready data.

Abstract: In a terminal device equipped with a function of running an application program, operation of an application program is suspended when an event is detected, the type of the event is predetermined, and event data representing the detected event is stored. Then, the terminal device delivers stored event data to the application program, after the suspended application is resumed.

Abstract: Customizing an image for display on a wireless device. A user accesses an image database and selects an image to customize. After the user selects an image, the image is retrieved from the image database based on a profile of the device. A customized image is produced from a composite of the selected image and a text layer generated from user text provided by a user. The customized image is formatted for the user's device based on the device profile and then transmitted to the user's device for display.

Abstract: The present invention provides a wireless headset with echo control and noise cancellation. The present invention also provides a method with phase reversion for echo control of a wireless headset wherein the wireless headset comprises closely disposed speakers and acoustic sensors. The present invention further provides a method with beamforming for noise cancellation of a wireless headset wherein the wireless headset comprises two separate units disposed in distance, and wherein each unit comprises an acoustic sensor.

Abstract: A power-saving method of wireless communication device, which operates a sleep mode for minimizing power consumption except for an active mode for communication, initializes a sleep probability upon the device being turned on, operates the active mode for communication with starting an active mode timer, transits to the sleep mode when there is no packet to transmit or receive before the active mode timer expires; and determines an exit from the sleep mode on the basis of the sleep probability.

Abstract: A battery cover latching assembly (50) is for a portable electronic device (100) including a housing (20), a first cover (10) configured for attaching to a first side of the housing, and a second cover (30) configured for attaching to a second side of the housing. The battery cover latching assembly includes a locking portion (131) and a latch (342). The locking portion is formed on the first cover. The latch is formed on the second cover. The latch includes a body (343) and a button portion (344) extending from the body. The body is engageable with the locking portion so as to lock the first cover and second cover with each other. The button portion is configured so as to be retained by the housing, and is operable to deform the body of the latch so as to unlock the first cover and the second cover.

Abstract: The send, end, and/or push-to-talk functions of a combination cellular telephone/two-way radio, are controlled with a single button on a hands-free device having a cable attached to the button, a microphone, and an earpiece. The button is pressed to instruct the cellular telephone/two-way radio to transmit in a half-duplex communications mode for a two-way radio conversation. The user speaks while continuing to press the button, to transmit the user's words in the two-way radio conversation. Next, the user releases the button, to instruct the cellular telephone/two-way radio to cease transmitting, to permit the user to hear words transmitted by the other party to the two-way radio conversation. Additionally, in some examples the user may answer an incoming cellular telephone call by pressing the button used during the two-way radio conversation, to instruct the cellular telephone/two-way radio to establish communications for a full duplex cellular telephone conversation.

Abstract: The invention relates to a sliding mechanism and in particular to a sliding mechanism for an electronic device. The sliding mechanism comprises a first part and a second part, the first and second parts being slidably movable relative to one another between a first configuration and a second configuration; the first and second parts including respective first and second magnetic elements, the magnetic elements being arranged to attract one another to bias the first and second parts towards the first configuration.

Abstract: The invention relates to a cover for a portable device (10) comprising: a main body (2) with resilient parts, an opening (3) provided in a resilient part (8) for insertion and removal of the portable device (10); and a releasable cap (1) shaped and configured to close the opening (3) and fit over at least a part of the resilient part (8) surrounding the opening (3).

Abstract: A physiological sensor has intensity compensation introduced along an optical path from emission to detection so as to compensate for unequal tissue attenuation as a function of wavelength. The sensor has emitters configured to transmit optical radiation having multiple wavelengths into a tissue site. At least one detector is capable of receiving the optical radiation after tissue attenuation. An equalization is capable of compensating optical radiation intensity so as to account for differences in tissue attenuation across at least a portion of the multiple wavelengths.

Abstract: A sensor assembly is provided that includes a skeletal frame comprising a loop structure. The sensor assembly includes at least one physiological sensor attached to the loop structure. A coating is provided over the skeletal frame and the at least one physiological sensor to form a sensor assembly. The sensor may be placed on a patient's finger, toe, and so forth to obtain pulse oximetry or other physiological measurements. Methods of manufacturing the sensor and sensor body and of applying the sensor are also provided.

Abstract: Apparatus for monitoring the presence of one or more chromophores in a tissue sample, comprises a light source for projecting light to illuminate an area of such tissue sample, a photo-receptor for receiving light remitted by the illuminated area of tissue, and spectroscopic analyzer means for monitoring the remitted light, a comparator having means for comparing variations in the intensity and spectral characteristics of the remitted light with respect to the intensity and spectral characteristics of the projected light at different wavelengths and with a record of the intensity and spectral characteristics of light remitted by a reference sample of such tissue and means for emitting a control signal in response to any such variations. Methods of analyzing tissue histology, especially skin histology, are discussed, and a mathematical model is proposed for the analysis and comparison of the remitted light with a reference sample.

Abstract: A magnetic resonance imaging apparatus includes an RF coil unit which generates RF pulses toward a subject, and which receives an MR signal from the subject. Gradient magnetic field coils generate a gradient magnetic field for slice selection, a gradient magnetic field for phase encoding and a gradient magnetic field for frequency encoding, respectively. An arithmetic unit generates image data on the basis of the MR signal, and a sequence controller controls phase encoding gradient magnetic field coils in order to generate flow pulses for dephasing or rephasing the MR spin of blood flow within the subject, in the same direction as that of the phase encoding gradient magnetic field.

Abstract: A cortical surface registration procedure related to a diagnostic or surgical procedure. In one embodiment, the procedure includes the steps of pre-operatively obtaining a first textured point cloud of the cortical surface of a targeted region of a brain of a living subject, intra-operatively obtaining optically a second textured point cloud of the cortical surface of the brain of the living subject, and aligning the first textured point cloud of the cortical surface to the second textured point cloud of the cortical surface so as to register images of the brain of the living subject to the cortical surface of the living subject.

Abstract: Projection views of the moving heart and stationary background tissues are acquired and processed to provide corresponding moving tissue projection views. An average image is reconstructed in a conventional manner and a moving tissue image is reconstructed using a highly constrained backprojection method and a composite image formed from selected moving tissue projection views. The average image is then combined with the moving tissue image. The method is disclosed in a cardiac gated MRI scan.

Abstract: A method and a system of determining a surface location defining an interface between an object to image and an antenna is provided. The method uses geometric principles and the fact that an impedance mismatch at the interface results in significant reflection. A propagation time from the surface to each antenna of a plurality of antennas is estimated. The propagation time locates the surface on a circle centered at each antenna and having a radius calculated using the propagation time. A tangent line connects the intersection of adjacent circles with the surface. The surface is estimated to be located at the tangent point where the circle and the shared tangent line between adjacent antennas intersect. Multiple tangent points may be averaged for each interior antenna. A curve is fit to the set of tangent points to provide an estimate of the surface location.

Abstract: An in-vivo sensing device may include, for example, an in-vivo sensing module attached to a functional module. The in-vivo sensing module may include, for example, an in-vivo imager or sensor. The functional module may include, for example, a power source, a transmitter, or other components.

Abstract: A method and a system for free space optical tomography provides one or more light source and one or more light sensors spaced, which in one embodiment are spaced apart from and object to be imaged. A surface capture system coupled to a variety of optical models provides the method and system with the ability to render accurate tomographic images though the light has propagated both through a diffuse medium and, in on embodiment, also through free space to the one or more light sensors.

Abstract: The system and method of the present invention relates to using spectroscopy, for example, Raman spectroscopic methods for diagnosis of tissue conditions such as vascular disease or cancer. In accordance with a preferred embodiment of the present invention, a system for measuring tissue includes a fiber optic probe having a proximal end, a distal end, and a diameter of 2 mm or less. This small diameter allows the system to be used for the diagnosis of coronary artery disease or other small lumens or soft tissue with minimal trauma. A delivery optical fiber is included in the probe coupled at the proximal end to a light source. A filter for the delivery fibers is included at the distal end. The system includes a collection optical fiber (or fibers) in the probe that collects Raman scattered radiation from tissue, the collection optical fiber is coupled at the proximal end to a detector. A second filter is disposed at the distal end of the collection fibers.

Abstract: The invention is related to a device and method for cordless recording, telecommunication transmission, and processing of three special ECG leads by the means of the mobile device (1) and diagnostic-calibration center (2) where the reconstruction of standard ECG leads is performed. Reconstruction parameters are determined previously by calibration for each patient. In urgent situation, a patient (3) performs recording of three special ECG leads with the mobile device (1), and sends the memorized data to the diagnostic-calibration device (2) via a cellular telephone (4). The patient can trace the process of recording and sending the data with the help of sound and light indicators. Diagnostic-calibration center (2) is equipped with a PC computer (6) connected to a receiving cellular telephone (7) and calibration ECG device (8) with 14 electrodes.

Abstract: In order to derive a standard 12-lead electrocardiogram, ones of limb leads and chest leads which constitute a lead system for the standard 12-lead electrocardiogram using 10 electrodes are selected. Electrocardiographic waveforms corresponding to the selected ones of the limb leads and the chest leads are obtained, as measured electrocardiographic waveforms, with electrodes attached on a living body. Electrocardiographic waveforms corresponding to a remaining ones of the limb leads and the chest leads are calculated, as non-measured electrocardiographic waveforms, with a prescribed transformation matrix and the measured electrocardiographic waveforms.

Abstract: A method and apparatus for verifying a determined cardiac event in a medical device based on detected variation in hemodynamic status that includes a plurality of sensors sensing cardiac signals, and a physiologic sensor sensing physiologic signals to generate a plurality of variation index samples corresponding to the sensed signals. A microprocessor detects a cardiac event in response to the sensed cardiac signals, computes a variation index trend associated with a predetermined number of variation index samples of the plurality of variation index samples, determines a rate of change of the computed variation index trend, and confirms the determined cardiac event in response to the computed variation index trend and in response to the determined rate of change.