Abstract: This disclosure provides a method and apparatus for a staged wake-up of a wireless device. The wireless device may include a wireless wake-up receiver and a communication transceiver. The wireless device may begin operations in a low-power mode. The wireless wake-up receiver may identify radio-frequency (RF) activity and transition operation of the wireless device from the low-power mode to an active power mode when RF activity is identified. In some implementations, RF activity is identified when an energy pattern of a received RF signal is matched to an energy pattern associated with a known communication protocol.

Abstract: The described embodiments allow for the association of an interaction with a target in a display. One embodiment includes detecting an interaction with an area associated with a graphical element in a display, detecting a later interaction displaced from the area, and associating the later interaction with a target in the display based at least on the time between the interaction with the area and the later interaction. User interactions with one or more displayed hit targets are based on corresponding time-varying hit zones. In response to unlimited user interaction with a hit target, subsequent user selections are validated based on a time-varying hit zone that is typically extended with respect to the previously selected hit target. The extended selection zone can overlap one or more other hit targets to favor re-selection of the individually selected hit target. The extended selection zone generally decreases as a function of time from prior selections of a hit zone.

Abstract: A method of operating a speech synthesizing conversation agent involves operating an audio interface to receive caller audio signal during a call session. The method generates an audio transcript from the caller audio signal through operation of a sentiment analysis engine configured by a sentiment model. The method communicates the audio transcript to a user interface switch. The method operates the speech synthesizer engine. The speech synthesizer engine generates a response signal for the caller audio signal and the audio transcript through operation of response logic engine configured by the historical conversation data. The speech synthesizer engine generates a synthesized audio response with ambient signal and a synthesized user model response from the response signal through operation of a speech synthesis model configured by the historical conversation data. The method communicates the synthesized audio response to the caller audio signal through the audio interface during the call session.

Abstract: A communication method and system for supporting a high data transmission rate is provided. The method and system fuses 5G communication systems with IoT technology to transmit data at a higher rate than 4G systems. The communication method and system is applied to intelligent services, based on 5G communication technology and IoT related technology, for example, smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail business, security, safety-related services, etc. A method and apparatus is provided that increases the amount of MBMS, according to the demand increase in MBMS, using an MBMS dedicated carrier, in a mobile communication system.

Abstract: Techniques are described for presenting data received from a headless device in an application served from distributed computing device(s), and using the application to generate data for configuring and registering the headless device. The headless device may have limited or absent display capabilities and the data may be employed to configure the headless device for wireless communication with other devices. The application may execute on a user device that communicates with the headless device over a wireless access point incorporated into the headless device. The data received from the headless device may be integrated into the application provided by the distributed computing devices(s), to enable updates to the appearance or user experience of the application without updating software on the headless device.

Abstract: Various embodiments provide for systems and methods for signal conversion of one modulated signal to another modulated signal using demodulation and then re-modulation. According to some embodiments, a signal receiving system may comprise an I/Q demodulator that demodulates a first modulated signal to an in-phase (“I”) signal and a quadrature (“Q”) signal, an I/Q signal adjustor that adaptively adjusts the Q signal to increase the signal-to-noise ratio (SNR) of a transitory signal that is based on a second modulated signal, and an I/Q modulator that modulates the I signal and the adjusted Q signal to the second modulated signal. To increase the SNR, the Q signal may be adjusted based on a calculated error determined for the transitory signal during demodulation by a demodulator downstream from the I/Q modulator.

Abstract: A cellular telecommunications network base station repeater for a mobile terminal in a network having a power control function causes, during an active communication session, mobile terminal uplink transmit power to decrease in response to an increase in signal strength of the received uplink signal. The gain of the repeater is increased in response to an increase in the uplink signal received at the repeater above a threshold, and subsequently decreasing the gain until the measured power in the received uplink signal exceeds the threshold. Due to the power control function, increasing the gain causes the transmit power of the mobile terminal, and hence the uplink signal received at the repeater, to decrease. Decreasing the gain causes the transmit power, and hence the received uplink signal, to increase. The threshold not being exceeded is indicative of the communication no longer being active, and the repeater will eventually deactivate.

Abstract: A wireless communication device in a wireless network sets management information notification cycles at specified time intervals and transmits management information containing receive timing information showing its own position to start receiving information, receive window information, and receive cycle information. Another wireless communication device receiving that management information links it to a communication device number for the corresponding wireless communication device and stores the receive timing, the receive window information, and the receive cycle information. When sending information, the receive start position of the corresponding communication device is found from the receive timing information, the receive window information, and the receive cycle information of the other communication and information is then transmitted at that timing. An asynchronous ad-hoc communication wireless network can therefore be configured without a particular control station.

Abstract: A system includes a radio frequency (RF) signal path configured to receive an input signal that includes at least one of a test signal and an RF signal. A local oscillator (LO) signal path is configured to supply a LO signal. A mixer includes a first input in communication with the RF signal path and a second input in communication with the LO signal path. A calibration control module is configured to receive an output of the mixer in response to the test signal and to adjust an effective duty cycle of the LO signal in the LO signal path based on the output of the mixer.

Abstract: Methods, apparatuses, systems, and computer-readable media for reducing Near Field Communication (NFC) Peer Mode connection times are presented. According to one or more aspects, a mode switching interval associated with an NFC device discovery loop may be defined. A first portion of the mode switching interval may be assigned to polling operations. A second portion of the mode switching interval may be assigned to listening operations. The first portion and the second portion of the mode switching interval respectively may occupy less than all of the mode switching interval, and the second portion of the mode switching interval may be shifted in position within the mode switching interval for respective iterations of the NFC device discovery loop.

Abstract: Methods, program products, and systems for multi-tier geofence detection are disclosed. In general, in one aspect, a mobile device can be configured to perform a task when the mobile device enters a geographic region. The mobile device can monitor a current location using a multi-tier approach. A baseband subsystem can monitor a coarse location of the mobile device using various course location parameters, such as a mobile country code (MCC), a location area code (LAC), or a cell identifier (cell ID), as the mobile device moves closer to the geographic region. Upon determining that the mobile device is in a cell that intersects the geographic region, the baseband subsystem can transfer the monitoring to the application subsystem. The task can be performed when the application subsystem determines that the mobile device is currently located in the geographic region.

Abstract: A mobile phone messaging system and method for managing display of messages to mobile phone users. A mobile client application operates at user's mobile phone. Mobile content providers manage the display of messages and related interactions throughout a specific period of time (e.g., daily, weekly, bi-weekly). Phone wakeup time data and message identifying data are transmitted from a mobile content provider server to a mobile phone. The wakeup time data and message identifying data are stored in the phone. The wakeup times are also added to a registry at the phone that facilitates launching of applications at the times indicated in the registry. At the specified wakeup times, the mobile client application determines the message identifying data associated with the wakeup time, connects to the mobile content provider server, and provides the message identifying data. The provider responds with a specific message and the mobile client application displays the message.

Abstract: A receiver includes an antenna array that generates received signals from a first remote transmitter and a second remote transmitter, the antenna array having a beam pattern that is controllable based a control signal. A plurality of receiver sections process the received signals to generate down-converted signals. A receiver processing module, generates the control signal to control the beam pattern to a first pattern during a first time period for reception from the first remote transmitter, generates a first reception estimate based on the down-converted signals during the first time period, generates the control signal to control the beam pattern to a second pattern during a second time period for reception from the second remote transmitter, generates a second reception estimate based on the down-converted signals during the second time period, and generates inbound data based on the first reception estimate and the second reception estimate.

Abstract: A receiver includes a first local oscillator, and an in-phase mixer and a quadrature mixer coupled to the first local oscillator and configured to generate in-phase and quadrature signals based upon received RF signals. A complex mixer is downstream from the in-phase and quadrature mixers. A controller is coupled to the in-phase and quadrature mixers and is configured to determine when the in-phase and quadrature signals include interference less than an interference threshold, and then powers off one of the in-phase and quadrature mixers.

Abstract: Methods are described of processing a signal transmitted over a channel in a wireless communication system. A method includes estimating at intervals at least one parameter of a time varying communication environment of said system. At least one processor-related signal processing criterion can be monitored for implementing a signal processing activity. Based on said at least one parameter and said at least one processor-related criterion, a signal processing function can be selected from a plurality of signal processing functions implementable by a processor. Each signal processing function includes a plurality of code blocks having a sequence of instructions for execution on a processor platform, the processor platform including a set of configurable operators having a plurality of predetermined configurations, each sequence of instructions including at least one configuration instruction, which selects one of the plurality of predefined configurations for executing that code block.

Abstract: Synchronization for achieving low power battery operation of a vehicle locating unit in a stolen vehicle recovery system whose radio receiver receives periodic transmissions, includes receiving periodic transmissions; turning on a radio receiver for a limited time to detect an expected message; if an expected message is not found, turning off the receiver and turning it on again after a time asynchronous with the transmission period; and after finding an expected message, waiting for the period of the transmissions less the length of an expected message and then looking for a synchronization symbol in the expected message and synchronizing subsequent actuation of the receiver using that synchronization symbol.

Abstract: Methods, program products, and systems for location-based application program management are described. A mobile device can receive a first application program to be executed in an application subsystem. The first application program can be configured to be invoked or notified when the mobile device is located at a defined location. The mobile device can register the first application program to a second application program that executes in a baseband subsystem. The mobile device can set the application subsystem to a power-saving operating mode. The second application program can monitor a current location of the mobile device. When the mobile device is currently located at the defined location, the second application program can set the application subsystem to an active operating mode, and invoke the first application program.

Abstract: Methods, program products, and systems of determining a time zone based on location is disclosed. In general, in one aspect, a mobile device can store one or more geometric shapes using latitude and longitude coordinates. The geometric shapes can be associated with time zones. The mobile device can determine a current location. The mobile device can identify a geometric shape in which the mobile device is currently is located. The mobile device can determine the time zone associated with the identified geometric shape.

Abstract: This document presents a wireless communication scheme utilizing a combination of two wireless communication schemes: a short range communication scheme and a radio communication scheme having a longer wireless transmission range than the wireless transmission range of the short range communication scheme. A short range signal is used to indicate a radio resource to be used for transmitting a radio signal, and the radio signal is then communicated in the radio resource indicated by the short range signal.

Abstract: A wireless communication system of the present invention achieves improvement of reliability of communication of control data while suppressing the decrease in the communication throughput of data blocks and/or control data. The wireless communication system of the present invention is provided with a base station (1) and a mobile station (2). The mobile station (2) is configured to transmit a plurality of data blocks to the base station (1) at predetermined transmission time intervals. One of the base and mobile stations is configured to generate a plurality of control data used for control of transmission of said plurality of data blocks, to generate a plurality of control messages from said plurality of control data, and to transmit said plurality of control messages to the other of the base and mobile stations.

Abstract: A transmission method includes: confirming a reference time; according to the bit property of the data to be transmitted and the reference time, inserting the time slice signal into a special time position of a data frame; transmitting the data frame in which the time slice signal has been inserted and the time slice signal. And a method for realizing information transmission includes: according to the information unit to be transmitted, the transmitter sets the time parameters of the signal transmission during a special time period; the receiver receives the information unit according to the property of the received signal in a determined time period. This invention also provides a transmission system, a transmitter and a receiver. This invention can transmit signaling and messages among multiple systems, in order to solve the signaling interaction problem in the processes of coexisting negotiation and quick switching of the multi-mode terminal in a multi-system or a mixed type network.

Abstract: A radio base station used in a mobile communication system is disclosed. The radio base station includes a scheduler configured to allocate one or more resource blocks, which are defined by a predetermined bandwidth and a predetermined transmission time interval, to a user device; and a reporting unit configured to report scheduling information indicating radio resource allocation to the user device. The scheduler is configured to generate the scheduling information such that downlink data channels and downlink control channels are transmitted using the transmission time interval as a transmission unit and uplink control channels are transmitted using an integral multiple of the transmission time interval as a transmission unit.

Abstract: A base station includes: an estimation section estimating transmission condition of each of frequency channels used for communication; a reception section receiving a data signal from each communication terminal through any of the frequency channels; a measurement section measuring received signal power of the received data signal for each frequency channel; a determination section determining, for each frequency channel, whether the received data signal is demodulated errorlessly; and a control section assigning frequency channels estimated as being in good transmission condition by the estimation section, to communication terminals the data signals of which are determined as not being errorlessly demodulated by the determination section, such that a frequency channel in a better transmission condition is assigned preferentially to a communication terminal having larger received signal power detected by the detection section, and transmitting retransmission request signals requesting the communication termin

Abstract: In a control of receiving service information, a controller in a radio communication terminal (AT) controls a communication section to receive broadcast data continuously for one cycle while a broadcast service is executed. When a packet among the broadcast data can not be received for some reason, retransmission of the packet is awaited. During the waiting period, transfer rates are respectively calculated based on all previously received data and the latest data received (e.g., during the preceding 30 seconds). Then, a time until the required packet is received for the next time is estimated. Until that time, intermittent reception is performed by the radio communication terminal (AT) at an interval assigned for the radio communication terminal.

Abstract: Based on forward signal quality detected by an access terminal, an access network may adjust the transmission rate at which to send power control commands (PCCs) to the access terminal and responsively begin sending PCCs directed to the access terminal at the adjusted transmission rate. For example, in response to determining that the access terminal is detecting a strong forward signal quality, the access network may begin sending PCCs directed to the access terminal at a reduced transmission rate of one PCC in less than every timeslot. In timeslots during which the access network does not send a PCC directed to the access terminal, the access network can then send PCCs directed to other active access terminals at a higher gain, which may in turn increase the percentage of PCCs received by the other active access terminals.

Abstract: Methods, program products, and systems for multi-tier geofence detection are disclosed. In general, in one aspect, a mobile device can be configured to perform a task when the mobile device enters a geographic region. The mobile device can monitor a current location using a multi-tier approach. A baseband subsystem can monitor a coarse location of the mobile device using various course location parameters, such as a mobile country code (MCC), a location area code (LAC), or a cell identifier (cell ID), as the mobile device moves closer to the geographic region. Upon determining that the mobile device is in a cell that intersects the geographic region, the baseband subsystem can transfer the monitoring to the application subsystem. The task can be performed when the application subsystem determines that the mobile device is currently located in the geographic region.

Abstract: A receiver includes an antenna array that generates received signals from a first remote transmitter and a second remote transmitter, the antenna array having a beam pattern that is controllable based a control signal. A plurality of receiver sections process the received signals to generate down-converted signals. A receiver processing module, generates the control signal to control the beam pattern to a first pattern during a first time period for reception from the first remote transmitter, generates a first reception estimate based on the down-converted signals during the first time period, generates the control signal to control the beam pattern to a second pattern during a second time period for reception from the second remote transmitter, generates a second reception estimate based on the down-converted signals during the second time period, and generates inbound data based on the first reception estimate and the second reception estimate.

Abstract: A wireless communication system of the present invention achieves improvement of reliability of communication of control data while suppressing the decrease in the communication throughput of data blocks and/or control data. The wireless communication system of the present invention is provided with a base station (1) and a mobile station (2). The mobile station (2) is configured to transmit a plurality of data blocks to the base station (1) at predetermined transmission time intervals. One of the base and mobile stations is configured to generate a plurality of control data used for control of transmission of said plurality of data blocks, to generate a plurality of control messages from said plurality of control data, and to transmit said plurality of control messages to the other of the base and mobile stations.

Abstract: A system for routing ACARS messages towards a plurality of transmission media, configured to be loaded onboard an aircraft, including: a database including a plurality of routing profiles, each profile being formed by a list indicating a rank of preference for each transmission medium, and a selection mechanism extracting, from an ACARS message sending request, a routing profile identifier, and selecting in the routing profile stored in the database, corresponding to the identifier, a transmission medium, according to its rank of preference, the thereby selected transmission medium then being used for transmitting the message.

Abstract: Traffic management reports are created by providing vehicle sensor devices at different location in a region. Each device captures data of vehicles that pass the device. The vehicle data is communicated to a central computer database. At the central computer database, a user interface selects one or more criteria from a plurality of criteria for filtering the vehicle data. Traffic management reports are then automatically created from the filtered vehicle data using the selected criteria.

Abstract: Methods, program products, and systems for task management based on travel distance are disclosed. In general, in one aspect, a method executed on a mobile device can include receiving a request to perform a task in a first subsystem (e.g., an application subsystem) of the mobile device. The request can indicate that the task is to be performed when the mobile device travels at least a threshold distance. The mobile device can determine a duration of silence. The mobile device can configure a second subsystem (e.g., a baseband operating system) of the mobile device to send a notification to the first subsystem notifying that the mobile device has traveled after at least the duration of silence. The first subsystem can receive the notification and determine that the threshold distance has been satisfied based on the received notification. The first subsystem can perform the task upon the determining.

Abstract: A communication partner appliance is implemented within a near field communication system. The communication partner appliance includes a receiver, a detector, and a processor. The receiver receives a NFC command signal from another communication partner appliance. The detector detects whether a carrier signal from the other communication partner appliance is present at the receiver at a time other than during a transmission of the NFC command signal from the other communication partner appliance to the receiver. The processor controls a power supply element based on a determination by the detector whether the carrier signal from the other communication partner appliance is present at the receiver. The power supply element is configured to establish a connection to either a first power supply or a second power supply. The first power supply is dependent on the carrier signal, and the second power supply is independent of the carrier signal.

Abstract: A channel prediction system (100) is provided with an estimation error calculator (130) which calculates an estimation error value representing the difference between a channel estimation value and a channel characteristic, and a prediction error calculator (140) for calculating a prediction error value indicating the difference between the channel prediction value calculated by a channel prediction unit (120) and a channel characteristic. The channel prediction unit (120) uses the channel prediction with priority over using the channel estimation value to calculate the channel prediction value corresponding to a future time when the estimation error value exceeds the prediction error value.

Abstract: A radio receiver includes a power control module for selectively powering down and powering up radio receiver elements in between known communication periods according to one aspect of the present invention. According to a second aspect of the invention, the radio receiver operates in a low power mode of operation and periodically “sniffs” to determine whether an access point has messages or communication signals to transmit to it.

Abstract: A receiver includes an antenna array that generates a plurality of received signals from at least a first remote transmitter and a second remote transmitter, the antenna array having a beam pattern that is controllable based on at least one control signal. A plurality of receiver sections process the plurality of received signals to generate a plurality of down-converted signals.

Abstract: A receiver includes an RF unit, a mixer which converts the output of the RF unit, a signal processing unit which filters the converted signal, a demodulator which demodulates the filtered signal, a level detector which compares a level of one of signals present between an input of the RF unit and an output of the signal processing unit with a threshold, a gain controller which generates a gain control signal based on the comparison result, a gate signal generator, and an interpolator. The receiver is configured such that a gain from the input of the RF unit to the output of the signal processing unit is changed in a stepwise manner. The gate signal generator generates a gate signal in synchronism with the gain change. The interpolator holds or interpolates the output of the demodulator for the time period represented by the gate signal.

Abstract: A receiving apparatus and method of a Multiple Input Multiple Output (MIMO) system are provided. The receiving apparatus includes a clock generation/delay compensation unit for generating a clock, an antenna switching unit for temporally dividing signals received through multiple antennas by performing switching according to the clock, a radio frequency (RF) chain to be shared for converting the temporally divided signals into baseband signals, and an analog to digital converter (ADC) to be shared for converting the converted signals into digital signals and for outputting the converted signals according to the clock. Accordingly, the number of RF chains used to implement a MIMO RFIC is reduced.

Abstract: A device and method for performing a channel profile estimation for an OFDM-based wireless communication system uses an averaged frequency coherence metric to select a particular channel profile, which is a current channel profile estimate. The averaged frequency coherence metric is derived using correlations between pilot subcarriers of an OFDM-based signal at predefined subcarrier locations for multiple frames of the OFDM-based signal. The selected channel profile may be used for channel estimation, as well as for link adaptation, to improve the performance of these processes.

Abstract: A disclosed base station apparatus includes: a TTI-length determining unit which determines, based on downlink receive quality information transmitted from a mobile station, whether data is to be transmitted in a first TTI with, as a unit, a predetermined period no shorter than a subframe length, or in a second TTI with, as a unit, a period shorter than the first TTI; a number-of-subframes determining unit which determines a number of subframes making up the determined TTI; a reporting unit which reports the determined TTI and the number of subframes making up the determined TTI to the mobile station; and a scheduler which performs scheduling based on the determined TTI and the number of subframes making up the determined TTI.

Abstract: A device and method for performing a channel estimation for an OFDM-based wireless communication system using sparsely spaced pilot subcarriers estimates missing pilot subcarriers in an interpolation window using pilot subcarriers that are outside of the interpolation window to produce estimated pilot subcarriers for the interpolation window. The pilot subcarriers in the interpolation window and the estimated pilot subcarrier are used to compute pilot channel estimates for the interpolation window, which are then used to derive data channel estimates for the interpolation window.

Abstract: System(s) and method(s) are provided for signaling-triggered power adjustment in a femto cell. Attachment signal activity is measured and a set of derived signaling activity metrics are assessed and compared with a set of thresholds. An activity metric that overcomes an associated threshold results in a power adjustment of the transmission power of a femto access point (AP). By monitoring LAU (location area update), RAU (routing area update), and call activity, signaling activity metrics (e.g., signaling failure rate, access control rejection rate, or dwell time) are determined and a femto AP can optimize transmission power to ensure coverage maintenance and confinement, as well as mitigate unnecessary signaling. Alarm(s) can be conveyed to a femto network platform when power increases after an adjustment cycle; alarm(s) can prompt a network-based response to actively address femto cell operation. Signaling-triggered power management affects operation of AP serving the femto cell and served mobile terminals.

Abstract: A receiver including a processor. A plurality of Fast Fourier Transforms of a plurality of signal segments of a signal can be determined by the processor. The plurality of Fast Fourier Transforms are stored. A frequency shift of the signal can be determined recursively based on the stored plurality of Fast Fourier Transforms of the plurality of signal segments.

Abstract: A process and machine for estimating the location of a wireless terminal is disclosed. The illustrative embodiment of the present invention is based on the observation that the signal strength of a signal from a transmitter is different at some locations, and, therefore, the location of a wireless terminal can be estimated by comparing the signal strength it currently observes against a map or database that correlates locations to signal strengths. In accordance with a first example, if a particular radio station is known to be received well at a first location and poorly at a second location, and a given wireless terminal at an unknown location is receiving the radio station poorly, it is more likely that the wireless terminal is at the second location than it is at the first location.

Abstract: An information processing apparatus and a communication apparatus for accurately recognizing at the base station the current receiving quality of the mobile terminals for improving the throughput of the base station. A mobile terminal determines its own receiving quality based on the signal received from the base station for generating the receiving quality message indicating the receiving quality and generates the power control information requesting the transmission power of the base station. The receiving quality message is transmitted at a frame rate and power control information is transmitted at the slot rate to the base station. Based on both the receiving quality message and power control information, the base station estimates the current receiving quality of the mobile terminal and adaptive modulation and coding is performed based on the estimated value.

Abstract: A communication terminal has a communicating section which performs communication via a network, an instructing section which gives instructions to perform communication, a reserving section which reserves performance of first communication by setting a starting time and an ending time of the first communication received through the communicating section, a notifying section which notifies a user that a reservation exists when the communicating section tries to perform second communication other than the first communication during a time period between a time preceding the starting time by a predetermined time period and the ending time, and a controlling section which controls to perform the second communication when an instruction to perform the second communication is given by the instructing section after the notification by the notifying section.

Abstract: The present invention can reduce interference generated by processors and other computing devices when a connected radio is active. In one embodiment, the invention may include determining a start of reception of radio signals by a radio, generating a radio active signal, transmitting the radio active signal to a coupled computer to affect the radio interference generated by the coupled computer. The embodiment may further include determining an end of reception of radio signals by the radio, generating a radio not active signal, and transmitting the radio not active signal to the coupled computer to affect the radio interference generated by the coupled computer.

Abstract: A method for receiving a broadcast service and a unicast service by a UE is provided. The method includes calculating a candidate interval for receiving the unicast service by referring to scheduling information of the broadcast service by the UE, when the unicast service begins to be provided through another frequency band other than a dedicated frequency band for the broadcast service while the UE receives the broadcast service through the dedicated frequency band; notifying the scheduling information of the broadcast service and the calculated candidate interval to an ENB in charge of scheduling of the unicast service by the UE; and switching to said another frequency band and receiving the unicast service in the candidate interval, while switching to the dedicated frequency band and receiving the broadcast service in another interval other than the candidate interval, by the UE.

Abstract: A transmitter sets a time length, determines a time point at which phases of frequency signals coincide within a range of the time length, defines a determined time point as a time reference point, aligns the phases of the frequency signals based on the time reference point, combines phase-aligned frequency, and transmits combined frequency signals to a receiver by the time length as the communication signals. The receiver receives the communication signals, extracts the phases of the frequency signals, obtains a time point at which the phases coincide, and determines an obtained time point as the time reference point.

Abstract: Time synchronization of two clocks is disclosed herein, such as two stationary clocks. A global time signal from a global time reference or common time source can be used to calculate a common view based clock offset between the two clocks. In parallel, a network based clock offset between the two clocks can be calculated based on messages exchanged over a communication network interconnecting the two clocks, without reverting to the global time reference. Two recent values (e.g., the two most recent values) of the common view clock offset and the network based clock offset can be combined or superposed in a seamless way to produce a final time offset estimate. The combination of independently calculated common view and network based clock offsets can be a weighted average of the two values, involving respective weights based on quality estimates of the latter.

Abstract: In receiving a file delivery session in which field descriptor tables (FDTs) identify Transport Objects (TOs) transmitted along with the FDTs, a receiver determines whether the files of the session have been received using a number of timers. A fragment wait timer t1 is started for each new TO declared in an FTD when that FDT is received. Each timer is cancelled when at least a fragment of the corresponding TO is received. Alternatively, a single timer is cancelled when at least a fragment of all the TOs have been received. A new object wait timer t3 is started when all the TOs declared in an FDT are received, and is cancelled when a new FDT is received. One of a number of table wait timers t2 is started whenever a TO which is not declared in any received FDT is received, and is cancelled when an FDT declaring that object is received. The file delivery session is left if any timer expires.