Abstract: Embodiments described herein provide an optimal communication channel recommendation engine by assessing whether the environment the customer is situated in is conducive to the channel selected by the customer. Specifically, the optimal channel recommendation engine obtains data artifacts indicative of ambient noise, motion, customer sentiment, network quality, customer focus, and/or the like to assess quality of the environment and recommend an optimal channel for the communication between the customer and the call agent. With the recommendation to switch to a different channel, the client component resumes communication with the new channel and retains the context of the interaction.

Abstract: Embodiments described herein provide an optimal communication channel recommendation engine by assessing whether the environment the customer is situated in is conducive to the channel selected by the customer. Specifically, the optimal channel recommendation engine obtains data artifacts indicative of ambient noise, motion, customer sentiment, network quality, customer focus, and/or the like to assess quality of the environment and recommend an optimal channel for the communication between the customer and the call agent. With the recommendation to switch to a different channel, the client component resumes communication with the new channel and retains the context of the interaction.

Abstract: A first communication unit 11 repeatedly transmits the same data signal as a transmitted data signal to a second communication unit 23 at shorter time intervals than an acknowledgement time in which an ACK signal is returned from the second communication unit 23 without any failure. As a result, even when the transmitted data signal is garbled in the middle of a transmission path due to noise, the second communication unit 23 can rapidly receive the repeatedly transmitted same data signal.

Abstract: A device and method for altitude-based interference mitigation in an aerial vehicle. The device includes a transceiver, an altimeter, and an electronic processor coupled to the transceiver and the altimeter. The electronic processor is configured to determine, via the altimeter, an altitude level of the aerial vehicle, compare the altitude level to an altitude threshold, and, in response to the altitude level exceeding the altitude threshold, control a radio frequency characteristic of the transceiver to mitigate signal interference based the altitude level.

Abstract: A controlled oscillator Analog-to-Digital Converter (ADC) includes an analog interface configured for receiving an analog differential input signal, and configured for providing a differential control signal; first and second controlled oscillators configured for receiving the differential control signal; and a frequency-to-digital converter having a first input coupled to an output of the first controlled oscillator, a second input coupled to an output of the second controlled oscillator, and an output for providing a digital output signal proportional to the analog differential input signal, wherein the analog interface or at least one of the first and second controlled oscillators is configured for receiving at least one disturb signal to prevent locking between the first and second controlled oscillators.

Abstract: A method in a wireless device for performing an uplink transmission to a base station in a wireless access system, wherein the wireless access system comprises one or more mini-slot configurations, the method comprising performing a clear channel assessment for identifying a transmission opportunity and determining the start of a mini-slots. The wireless device performing an uplink transmission within the determined mini-slot wherein the transmission is performed according to a predetermined configuration for mini-slot communication between the base station and the wireless device, such that the base station can identify the start of the uplink transmission.

Abstract: Techniques are directed to using communication metric data associated with multiple modulation schemes to achieve a link quality metric that is representative of the link as a whole, across the multiple modulation schemes that may be employed on the link. A calculation of a link quality metric may be triggered by a network layer transmission attempt, with communication metrics accumulated at the link layer of the link. A filter used to calculate the link quality metric may be updated based on network layer transmission attempts, based on successful and/or unsuccessful transmissions at a Media Access Control (MAC) layer of the link. More generally, a calculation of link quality may be triggered by a higher layer transmission attempt while being calculated based on transmission attempts at a lower layer of the link.

Abstract: The described technology is generally directed towards overcoming a radio link interruption event, for example caused in the mmWave spectrum by a physical blockage between user equipment and a communications network distributed unit. Described is executing an inter-distributed unit beam switch in response to a radio link interruption trigger when no beams are available to support the user equipment from the distributed unit currently serving the user equipment. The inter-distributed unit beam switch may be performed by notifying a flow control process of the radio link interruption, which can switch to a different distributed unit such as selected by beam quality measurements.

Abstract: A transponder module of a system for measurement of a race time includes a time base in a microcontroller, which is activated upon receipt of a low-frequency electromagnetic field signal from a transmission antenna of a measuring system which is disposed at the level of a line of passage. The microcontroller, once woken up, is capable of measuring several successive intensities of the captured electromagnetic field in order to reconstruct a curve of the electromagnetic field and to determine a crossing time on the line of passage of the transponder module with the activated time base thereof in order to transmit, to a decoder unit of the measuring system, a signal of the result of the time of crossing determined by the microcontroller.

Abstract: Systems and methods are introduced for rate control of data transmissions in a wireless camera system. In an illustrative embodiment, a computing system selects primary data rates and corresponding fallback data rates to use for transmission of video data. The computing system selects the data rates that provides high-throughput without resulting in wasted energy from retransmissions. The selection may be based upon transmission conditions as well as the record of past data rates, the number of attempts for the data rates, and whether they were successful. These data may be stored as a state machine or for machine learning analysis. Finally, the video data may be aggregated prior to transmission to reduce overhead and improve efficiency.

Abstract: An image forming apparatus includes a wireless communication portion, a transmission processing portion, a decoding processing portion, a change processing portion, and a retransmission processing portion. The wireless communication portion has a storage portion that stores member data regarding a replacement member. The transmission processing portion is configured to transmit a transmission request for transmitting the member data to the wireless communication portion. The decoding processing portion is configured to decode a response signal including the member data and transmitted from the wireless communication portion in response to the transmission request. The change processing portion is configured to change a decoding timing of the response signal when it has been determined that reception of the member data has failed. The retransmission processing portion is configured to retransmit the transmission request to the wireless communication portion after the decoding timing has been changed.

Abstract: The present disclosure provides a method and an apparatus for receiving Channel Quality Indication (CQI) information, as well as a method and an apparatus for transmitting CQI information. The method for receiving CQI information includes: transmitting a higher layer configuration signaling message to a terminal; and receiving CQI information from the terminal. The CQI information is determined based on a CQI table obtained based on the higher layer configuration signaling message. With the above solutions, higher data transmission reliability and lower data transmission rate required for MTC terminals with coverage enhancement and 5G terminals can be achieved.

Abstract: The present disclosure provides a method and an apparatus for receiving Channel Quality Indication (CQI) information, as well as a method and an apparatus for transmitting CQI information. The method for receiving CQI information includes: transmitting a higher layer configuration signaling message to a terminal; and receiving CQI information from the terminal. The CQI information is determined based on a CQI table obtained based on the higher layer configuration signaling message. With the above solutions, higher data transmission reliability and lower data transmission rate required for MTC terminals with coverage enhancement and 5G terminals can be achieved.

Abstract: Embodiments comprise: a plurality of channel filters, each channel filter to remove all but a specified portion of a wireless network spectrum; a plurality of radios each configured to receive one of the specified portions of the wireless network spectrum associated with one of the channels; wireless device identification logic to analyze the digital data stream for each channel to identify wireless devices and to packetize the transmissions using the identity of the sender and/or recipient; a plurality of wireless networking stacks each associated with one of the wireless devices identified by the wireless device identification logic; stack forwarding logic to receive packets from the wireless device identification logic and to forward the packets to wireless networking; and a communication feature extraction module to extract a specified set of features from the digital data stream generated by the radios.

Abstract: A data transmission method includes, detecting an incoming link training sequence that is transmitted from an upstream transmitter, generating a marker indicating a timing location of a word included in the incoming link training sequence, generating a self link training sequence based on a local reference clock, adjusting a time difference in the incoming link training sequence and the self link training sequence, and retransmitting an incoming bit stream based on the self link training sequence being matched to the incoming link training sequence.

Abstract: Phase detectors for clock and data recovery circuits are provided herein. In certain implementations, a phase detector includes sampling circuitry that generates a plurality of samples of an input data signal based on timing of a plurality of clock signals, a binary response circuit that processes the plurality of samples to generate a plurality of binary output signals providing a binary detector response, and a linear response circuit that processes the plurality of samples to generate a plurality of linear output signals providing a linear detector response. The phase detector generates one or more data output signals based on the plurality of samples to thereby recover data from the input data signal.

Abstract: A phase lock loop (PLL) includes: a binary phase detector configured to generate a first and second polarity signals that respectively indicating whether an incoming data stream is leading a feedback signal, or whether the feedback signal is leading the incoming data stream, wherein a difference between the first and second polarity signals does not represent an amount of phase difference between the incoming data stream and the feedback signal; a digital filter configured to: generate filtered first polarity signal on a first path and a second path that are different; and generate filtered second polarity signal on a third path and a fourth path that are different; a charge pump coupled to the digital filter and configured to: integrate the filtered first polarity signal and the filtered second polarity signal; and an oscillator configured to generate the synthesized clock signal serving as the feedback signal.

Abstract: Disclosed is a chip-based data transmission method for a data sending side. The method includes that protocol layer processing is performed on input data, and the data after the protocol layer processing is mapped to each physical channel for transmission; meta-frame layer processing is performed on the data transmitted by each physical channel, and the data after the meta-frame layer processing is sent. Another chip-based data transmission method for a data receiving side is provided which includes that meta-frame layer processing is performed on data received by each physical channel, the data after the meta-frame layer processing is mapped to a protocol layer for transmission, and the protocol layer processing is performed on the data transmitted by the protocol layer, and the data after the protocol layer processing is sent. A chip-based data transmission device and system, and a computer storage medium are also provided.

Abstract: A method and system for synchronizing a server cluster having a plurality of nodes each provided with an internal clock and interconnected with each other by a clock interconnection network comprising a plurality of transmission segments. Time-stamping information is generated by the internal clock of a source chosen from the nodes of the server cluster. The time-stamping information is transmitted to all the nodes in the server cluster from the source; and and the internal clock of each node of the server cluster is adjusted from this time-stamping information The time for transmission of the time-stamping information is adjusted by each transmission segment to a constant value established for each transmission segment. Upon receiving the time-stamping information by any one of the nodes in the server cluster, its internal clock is adjusted from the time-stamping information and information relating to the transmission segments passed through between the source and this node.

Abstract: A multi-zone media system and method for providing multi-zone media. As a non-limiting example, various aspects of this disclosure provide a system and method that flexibly presents media content (e.g., audio content) to a user as the user moves throughout a premises.

Abstract: Configuring a node (410, A-I, L-O) of a synchronization network, involves determining information about synchronization sources of a plurality of synchronization trails for passing synchronization information from the synchronization source (A, L, O, PRC) to the node to provide a synchronization reference. After determining automatically (210, 230, 330, 335, 340) synchronization transmission characteristics of trails (EF, FG, GH, HM, MN, OF, FI, IH) which use packet-based communication, the trails are compared automatically (240, 370), using their source information and their synchronization transmission characteristics, for selecting which of these trails to use for providing the synchronization reference for the node (N).

Abstract: An apparatus for distributing video content includes one or more video input modules each adapted to receive a video signal from a video source, and a video combiner for receiving the video signals from the one or more video inputs and generating a video packet data stream. The apparatus also includes at least one video output module adapted to transmit the video packet data stream, and a processor coupled to the video combiner and the at least one video output. The processor cooperates with one or both of the video combiner and the at least one video output to transcode at least a portion of the video packet data stream.

Abstract: A communication device for communicating with a plurality of terminals via a wireless network, the communication device being configured to, when it has a message to transmit to that plurality of terminals: select, from a multiple of available acknowledgement mechanisms, an acknowledgement mechanism for the terminals to use in acknowledging receipt of the message and communicate the selected acknowledgement mechanism to the plurality of terminals.

Abstract: A remote device comprising a remote clock oscillator with relatively low precision, a receiver that receives time packets transmitted periodically from the hub device via the satellite, each time packet including a hub real time clock (RTC) value and a hub network clock reference (NCR) value, a remote RTC counter that represents a remote RTC value at the remote, a remote NCR counter that represents a remote NCR value at the remote, and processing circuitry that extracts the hub RTC value and the hub NCR value from a current time packet, compares contents of the current time packet with contents of a previously received time packet, and adjusts the remote RTC counter based on the result of the comparison to synchronize the remote RTC value at the remote with the hub RTC value.

Abstract: Methods and devices are provided wherein feedback is included in a checksum. An example method includes communicating between a first device and a second device. The method further includes including feedback information used by the first device as input to a checksum calculation, wherein the feedback information is not communicated concurrently with the checksum from the first device to the second device.

Abstract: A network comprising a latency monitoring point adapted to calculate a forward latency of a path between a master node and a slave node on the basis of time stamps which are exchanged periodically between said master node and said slave node by a time alignment protocol used in said network.

Abstract: The present invention discloses a data retransmission method, apparatus, and system, and relates to the field of communications. In a data retransmission method, a special codeword is determined according to a difference between a number of layers selected by a transmitter and the number of layers that need to be occupied for retransmitting a codeword. The number of layers that need to be occupied by the codeword to be retransmitted is smaller than the number of layers selected by the transmitter and no new data needs to be transmitted and wherein the number of transport blocks comprised in the special codeword is equal to the difference. The codeword that needs to be retransmitted and the special codeword are allocated to each transport layer through a layer mapping.

Abstract: A decision feedback equalizer that can operate at higher speed is provided. The decision feedback equalizer includes a weighting addition circuit (adder 21, coefficient units Tap1a, Tap2 to Tapn) that sums an input signal to weighted versions of feedback signals FB1 to FBn, n being an integer not less than 2. The decision feedback equalizer also includes a decision circuit 11 that decides whether or not the result of addition by the weighting addition circuit is not less than a defined threshold value and that outputs the result of the decision to outside and to a shift register (latch circuits L2 to Ln). The decision circuit operates in synchronism with a clock signal. The shift register sequentially holds the result of decision of the decision circuit 11 in synchronism with the clock signal, and outputs the contents held by its component registers as feedback signals FB2 to FBn.

Abstract: A method for activating a node in a Wireless Sensor Network includes detecting and amplifying pulse signals from a base station; determining whether pulses in the amplified pulse signal are valid; and counting valid pulses in three time periods. A target identifier is calculated using a predetermined formula and numbers of the valid pulses counted. Whether the target identifier matches an identifier of the communication system is determined. The communication system when the target identifier matches the identifier of the communication system is activated. The node is also provided.

Abstract: In a semiconductor device, a transmitting circuit generates a delayed data signal and a first delayed retransmission request signal by delaying a data signal and a first retransmission request signal, respectively, and outputs a pulse signal at an edge of the delayed data signal and the first delayed retransmission request signal and prohibits output of the pulse signal at an edge of the first delayed retransmission request signal during a specified period across an edge of the delayed data signal.

Abstract: A method for employing a controlled-modification current time value is presented. In the method, the current time value is maintained. Also, requests for modification of the current time value are received. The requests are processed so that the requested modification associated with one of the requests is immediately incorporated into the current time value, and so that the requested modification associated with another one of the requests is not immediately incorporated into the current time value.

Abstract: A voltage mode transceiver having an input/output (I/O) node for coupling to a bidirectional signaling link is disclosed. The transceiver includes a transmit circuit having an output coupled to the node and a receive circuit. The transmit circuit includes a transmit digital-to-analog converter (DAC) circuit having a transmit impedance network and a hybrid impedance network. The transmit impedance network generates an analog transmit version of a digital data signal while the hybrid impedance network couples to the transmit impedance network to generate an analog mirror version of the digital data signal. The receive circuit has a first input coupled to the I/O node and a second input coupled to receive the analog mirror version of the digital data signal.

Abstract: In a wireless network, plural downlink signals from plural base stations are transmitted to a terminal. The plural downlink signals all carry the same information to the terminal. The terminal provides feedback on the downlink channels. The feedback provides information on the taps of the channels. The amount of information fed back is constrained. Based on the feedback, transmission parameters of the downlink signals are adjusted. The process of transmitting, providing feedback, and adjusting the parameters continue so that the energy of the downlink signal is enhanced at the terminal location and suppressed elsewhere. Beam forming can be used to further suppress the energy signature at locations other than the terminal location.

Abstract: A transceiver with non-deterministic delay characteristics is analyzed and adjusted to provide a transceiver with deterministic delay characteristics. The transceiver may be implemented with a variety of device types to support high bandwidth operation over a wide range of frequencies. Deterministic behavior allows use of the transceiver in source synchronous interfaces. The transceiver may also be dynamically analyzed and adjusted during operation as operation frequency changes.

Abstract: A multi-link input/output (I/O) interface uses both feed-forward and feedback signaling to reduce the impact of noise on data capture at a memory controller. To transfer data from a source module to a destination module, a defined pattern is communicated from the memory module along a master channel concurrent with the memory module providing data via one or more slave channels. Based on the phase of the defined pattern as it is received, the multi-link I/O interface feeds forward to the slave channels control signaling whose phase reflects a predicted noise pattern for the system. Each slave channel performs CDR by adjusting timing of its corresponding capture clock signal based on the fed forward control signaling and based on feedback signaling for the corresponding slave channel, whereby the feedback signaling reflects an error measurement between a phase of a capture clock signal and transitions in received data.

Abstract: A modulator subjects an input signal to primary modulation to generate a primary modulated signal. A transmitter generates and transmits a transmission signal based on a secondary modulated signal generated from the primary modulated signal. A retransmission request receiver receives a retransmission request that contains identification information. An operator uses a data sequence that is a set of elements of a same number as a number of elements in an input signal identified by the identification information and with element values of 1 or 0 to generate operation data whose elements are values of exclusive OR of respective elements of the input signal and respective elements of the data sequence that are at same positions as positions of the respective elements of the input signal. If a retransmission request receiver receives a retransmission request, the modulator and transmitter perform the above processing using the operation data as an input signal.

Abstract: The present invention relates to a method and an apparatus for transmitting and receiving a reference signal in a wireless communication system. In the method, in order to dynamically switch an uplink (UL) Demodulation-Reference Signal (DM-RS) according to the communication environment, such as CoMP and MU-MIMO, a parameter set for generation of a reference signal sequence is configured to include a Virtual Cell Identifier (VCID) parameter configured by information of a total of 9 bits and a cyclic shift hopping initial value parameter cinitCSH, which is 9-bit information representing one integer value among 510 integer values. Therefore, it may be possible to achieve dynamic transmission or reception of a reference signal and channel estimation through the dynamic transmission or reception of the reference signal even when the communication environment dynamically changes as in a Cooperative Multiple Point transmission and reception (CoMP) scenario.

Abstract: A storage device configured to communicate with a host according to a serial communication standard. The storage device includes a receiver configured to receive host data from the host; a clock data recovery circuit configured to determine a first frequency of host data transmitted by a host; a phase locked loop configured to generate a local phase corresponding to a local clock signal; a frequency offset calculator configured to generate a frequency offset corresponding to the first frequency and a second frequency of the local clock signal; an accumulator configured to generate a phase offset corresponding to a difference between the local phase and a phase of the host data; an interpolator configured to generate a compensated local clock signal using the phase offset and the local phase; and a transmitter configured to transmit device data to the host using the compensated local clock signal.

Abstract: The present invention provides a transmission apparatus and a reception apparatus easy to sample data correctly by a clock in the reception apparatus. In a detection section 25 of a reception apparatus 20n, based on data output from a sampler section 23, both or either of detection of a phase difference between data received by a data reception section 21 and a clock received by a clock reception section 22, and/or waveform distortion of this data is performed. A detection signal indicating a result of detection by the detection section 25 is transmitted to a transmission apparatus 10 by a detection signal transmission section 26. In the transmission apparatus 10, by a control section 15, based on the detection signal received by a detection signal reception section 14, both or either of control of adjustment of a phase between data transmitted by a data transmission section 11 and a clock transmitted by a clock transmission section 12, and/or adjustment of an amplitude of the data is performed.

Abstract: Disclosed is an improved approach for implementing an on-demand scheduler in a mobile device and the structures to support realtime on-demand schedulers. A lightweight word-based structure is disclosed for storing scheduling-related data on the mobile device. Using this lightweight word-based structure enables on-demand and real-time scheduling. This type of lightweight structure also permits scheduling activities to be performed in a disconnected mode, which can then be later synchronized with the server to confirm the booking In addition to appointment scheduling, this technique can also be implemented for scheduling of any type of resource.

Abstract: A method for adaptive communication in an HF frequency band includes at least one of the following steps: the determination of a payload subband S that is available for a transmission in the HF band, the selection in the payload subband S of a set of n frequency channels of identical width according to a frequency allocation plan and the quality of the link of each of said channels, or the simultaneous transmission on the n frequency channels of a signal complying with an HF waveform.

Abstract: The present invention discloses a method and a device of sending and receiving precoding information. A terminal terminal obtains a wideband precoding matrix indicator PMI. The terminal encodes an MSB of the wideband PMI to obtain encoded information. The MSB of the wideband PMI is encoded separately or jointly with other information and the MSB is a part of the wideband PMI. The terminal sends encoded information to a data sending end.

Abstract: A communication system is provided. A first communications device transmits at least one first message including predetermined bit sequences. A second communications device determines one or more antenna weighting vectors (AWVs) and one or more bitloading vectors (BLVs) by using the first message in accordance with a predetermined rule and transmits a second message including information pertinent to the AWVs and the BLVs to the first communications device. The first communications device further communicates with the second communications device about an AWV selected from the AWVs and the first and second communications devices apply the selected AWV to the corresponding antennas before exchanging data. The data includes a header carrying information pertinent to a BLV selected from the BLVs used to encode the data and a payload is transmitted to the second communications device. The second communications device decodes the data in accordance with the selected BLV.

Abstract: In a modular signal mirroring system each point-to-point RF transceiver end has a controller module coupled to one or more I/O modules. The I/O modules have various input and output circuits. A signal received at the near end is reconstructed at the far end after being transmitted in an RF packet. The reconstructed signal may be the same as the input signal, inverted from the input signal or level-shifted from the input signal. It is representative of the input signal following the input signal's state after a time-quantization latency. Transmission between the two ends is via a periodic transmission controlled in a master slave protocol. If a transmission is not received in a timely manner or, in some systems, if intentional interference with transmissions is detected, the reconstructed signal is forced to a safe state determined by local switch settings. The settings include the last known good state.

Abstract: Provided is a channel state information (CSI) sharing method and apparatus in a Multiple User Multiple Input Multiple Output (MU-MIMO) environment. Each node may use network-coding to reduce overhead necessary for sharing CSI between all nodes in the MU-MIMO environment. A transmitter may dynamically select, based on the CSI between receivers, a path used for transmitting data to each receiver and a receiver to be used as a relay based on the global CSI. A decoding performance may be improved based on the CSI between the transmitter and the receivers.

Abstract: The present invention provides a user equipment and channel state information feedback method. The channel state information feedback method used in a coordinated multi-point system includes acquiring small-scale channel state information H?=[H?1, H?2, . . . , H?K] between a user equipment and all base stations joining coordination, acquiring large-scale channel state information li(i=1, . . . , K) between the user equipment and each of the base stations joining coordination, acquiring a CQI (CQIi=li?|H?|, i=1, . . .

Abstract: A method and apparatus for high quality signal transmission, which utilizes normal-mode current flow and produces an audio output signal with suppression of normal-mode voltage amplitude, comprising transmitting an audio input signal source though (1) a buffer amplifier; (2) a modulated current source; (3) a pair of wires; (4) a current transformer; and (5) a receiver amplifier for said current transformer.

Abstract: A transceiver is described. The transceiver includes a first injection-locked oscillator and a second injection-locked oscillator. The transceiver also includes a first phase-locked loop coupled with the first injection-locked oscillator. The first phase-locked loop is configured to generate a first frequency reference. Further, the transceiver includes a second phase-locked loop coupled the second injection-locked oscillator. The second phase-locked loop is configured to generate a second frequency reference. The transceiver includes a mixer configured to receive the first phase-locked loop output and configured to receive said second injection-locked oscillator output. The mixer is also configured to generate a carrier frequency signal based on the first injection-locked oscillator output and the second injection-locked oscillator output. And, the transceiver includes a modulator configured to receive said carrier frequency signal.

Abstract: There is provided a receiver including a first delay time calculating unit configured to calculate a first delay time indicating a time lag between transmission of a transmission signal by a transmitter and reception of the transmission signal by the receiver, a second delay time calculating unit configured to calculate a second delay time indicating a time lag between transmission of a response signal by the receiver and reception of the response signal by the transmitter, and a time difference calculating unit configured to calculate a time difference between a time of a clock in the transmitter and a time of a clock in the receiver.

Abstract: In order to transmit a large amount of data in series at a time with a MIMO communication scheme while avoiding deterioration of decoding characteristics due to change over time by a channel matrix, a wireless communication system uses an open-loop type and a closed-loop type of MIMO communication modes in combination and switches to the open-loop MIMO communication mode in response to the information that the amount of data to be transmitted at a time has exceeded a predetermined amount of bits or a predetermined transmission time during data transmission under the closed-loop MIMO communication mode. By discontinuing useless closed-loop MIMO communication and switching to the open-loop MIMO communication mode that is better than Zero-forcing, the decoding characteristics are prevented from simply becoming deteriorated.