Abstract: Embodiments described herein comprise a wellbore system having a controller, one or more downhole tools, and a conveyance configured to lower the one or more downhole tools into the wellbore. The one or more control nodes are located in at least one of the downhole tools and wherein the control nodes activate a portion of the downhole tool and data is exchanged between the control node and the controller using a direct sequence spread spectrum signal.

Abstract: This application provides an uplink reference signal sending method and apparatus, a base station, and user equipment (UE). The method includes: configuring, by the base station, M pieces of uplink reference signal resource information for the UE; and sending, by the base station, the M pieces of uplink reference signal resource information to the UE, so that the UE sends uplink reference signals based on different uplink reference signal resource information with different beamforming gains. A path loss is compensated for by using a beamforming technology. In addition, the base station configures the M pieces of uplink reference signal resource information for the user equipment UE, so that the UE sends the uplink reference signals by using different relatively uplink reference signal resource information based on different beamforming gains. Therefore, uplink reference signal sending efficiency is improved.

Abstract: An aspect of the present disclosure includes methods, systems, and computer-readable media for receiving a first timing reference signal and a second timing reference signal at a local device, wherein the second timing reference signal includes an internal timing reference, receiving a timing indication from a remote device, calculating a timing offset from at least one of a propagation delay, the timing indication, or the first timing reference signal, adjusting the internal timing reference based on the timing offset, and transmitting a message based on the internal timing reference.

Abstract: A sub-sampler phase locked loop (SSPLL) system having a frequency locking loop (FLL) and a phase locked loop (PLL) is disclosed. The FLL is configured to detect frequency variations between a phase locked loop (PLL) output signal and a reference frequency and automatically generate a pulsed correction signal upon the detected frequency variations and apply the pulsed correction signal to a voltage controlled oscillator (VCO) control voltage. The PLL is configured to generate the PLL output signal based on the VCO control voltage.

Abstract: An antenna array includes an antenna assembly. The antenna assembly includes a plurality of elements. The antenna assembly is configured to measure a reference combined parameter of a reference element of the plurality of elements, measure a first combined parameter of the reference element and a first neighbor element of the plurality of elements and being adjacent or diagonal with respect to the reference element, calculate a differential parameter according to the first combined parameter and the reference combined parameter, and adjust a parameter of the first neighbor element according to the differential parameter. The parameter of first neighbor element is a phase or a amplitude of first neighbor element. The first combined parameter includes a coupling contribution of the first neighbor element and the reference element, and contributions from a path of the first element and a path of the reference element.

Abstract: The invention relates to a method for suppressing an interference signal during detection of a chirp signal from an input signal (X), comprising the following steps: a. recording the input signal (X); b. calculating an output signal (R1) as a correlation from the recorded input signal (X) and a chirp reference signal (CR) by means of a correlator (30); c. calculating a magnitude (XB) of the input signal (X) from the input signal (X); d. calculating a magnitude (R1B) of the output signal (R1) from the output signal (R1); e. calculating a phase difference (P) between the input signal (X) and the output signal (R1); f. calculating a synthesized interference signal (R2) from the magnitude (XB) of the input signal (X), the magnitude (R1B) of the output signal (R1) and the phase difference (P) by means of a rotator (60); g. calculating a residual signal (DR) as the difference between the output signal (R1) and the synthesized interference signal (R2).

Abstract: Disclosed is a method and apparatus for transmitting and receiving a synchronization signal and a transmission system. In the method, a transmitting node determines a frequency band range in which a carrier is located, and configures or assumes synchronization channel information on the carrier according to the frequency band range, where the synchronization channel information includes at least one of: a subcarrier spacing or orthogonal frequency division multiplexing (OFDM) symbol information of a synchronization channel; and the transmitting node transmits the synchronization signal using the synchronization channel information.

Abstract: Embodiments of the present disclosure provide a method for transmitting Downlink Control Information (DCI), a network side device and a terminal device. The method includes that: the network side device determines a transmission manner adopted to send downlink data to the terminal device; and the network side device sends DCI to the terminal device, the DCI carrying first indication information which indicates the transmission manner adopted by the network side device to send the downlink data to the terminal device.

Abstract: Embodiments of the present disclosure relate to a data transmission method and a communications device. The method includes: performing an interpolation operation on a first signal sequence to obtain a second signal sequence, where a length of the second signal sequence is greater than a length of the first signal sequence; mapping the second signal sequence onto a subcarrier to obtain a second signal sequence that is on the subcarrier; performing an inverse fast Fourier transform (IFFT) on the second signal sequence that is on the subcarrier, to obtain a time-domain signal, and transmitting the time-domain signal. According to the embodiments of the present disclosure, a delay deviation can be better resisted.

Abstract: A medical fluid delivery system including remote machine updating and control is disclosed. An example medical fluid delivery system includes a first fluid delivery device for a first patient and a second fluid delivery device for a second patient. The medical fluid delivery system also includes a server in communication with the first and second fluid delivery devices and a software application for a mobile device. The software application causes a first icon to be displayed representing the first fluid delivery device and a second icon to be simultaneously displayed representing the second fluid delivery device. The medical fluid delivery system further includes a first communication link between the first and second fluid delivery devices and the server, and a second communication link between the server and the software application. The software application receives status updates from the fluid delivery devices via the server and the first and second links.

Abstract: A method for pilot configuration includes: a base station configuring K1 sets of pilot resources of a first type and K2 sets of pilot resources of a second type; the base station transmitting the K1 sets of pilot resources of the first type to a terminal in a first transmission mode, and transmitting the K2 sets of pilot resources of the second type to the terminal in a second transmission mode; and the base station receiving a first type of feedback information fed back by the terminal according to the measurement of the pilot resources of the first type, and receiving a second type of feedback information fed back by the terminal according to the measurement of the pilot resources of the second type, wherein K1 and K2 are integers equal to or greater than 1.

Abstract: Embodiments provide a receiver having a receiving unit and a synchronization unit. The receiving unit is configured to receive a data packet having a pilot sequence. The synchronization unit is configured to separately correlate the pilot sequence with at least two partial reference sequences corresponding to a reference sequence for the pilot sequence of the data packet, in order to obtain a partial correlation result for each of the at least two partial reference sequences, wherein the synchronization unit is configured to non-coherently add the partial correlation results in order to obtain a coarse correlation result for the data packet.

Abstract: Apparatus and method for symbol detection are disclosed. The solution comprises obtaining (400) multiple-input-multiple-output symbols received over a transmission channel, the symbols comprising a plurality of layers, each layer comprising a constellation point of multiple candidate constellation points, selecting (402) for each layer a precision, each layer having a precision smaller or equal than the precision of a previous layer and searching (404) for each layer, utilising the selected precision, the constellation point among the candidate constellation points by minimising a given cost function, utilising a plurality of Arithmetic and Logic Units, ALUs, comprising at least one real and imaginary part, the ALUs of the apparatus comprising real and imaginary part having different precisions by having different number of bits, the data memory and the plurality of ALUs being connected with each other by a data bus of a given width.

Abstract: A user equipment apparatus determines whether a transmission is received from a base station within a time window and skips measurement of a reference signal during a subsequent period, when a transmission is received from the base station within the time window. A base station apparatus configures a UE to monitor one or more reference signals associated with a beam pair link and transmits a first signal in a transmission to the UE. The base station determines whether the transmission is received at the UE within a time window and determines whether to transmit a reference signal, based on whether the transmission is received at the UE within the time window. Upon determining that the transmission was received at the UE, the base station may skip transmission of the reference signal or modify a time, a frequency, a power, and/or a reference signal offset for the reference signal.

Abstract: A digital phase-locked loop (DPLL) includes a voltage-controlled oscillator to generate an output clock, a filter coupled to the voltage-controlled oscillator, and a time-to-digital converter (TDC) that receives a reference clock and a feedback clock. The feedback clock is derived from the output clock. The TDC generates a digital output value. The DPLL also includes a cycle slip detector circuit coupled to the TDC. The cycle slip detector circuit detects a cycle slip based on the digital output value and adjusts the digital output value by a second digital value that corresponds to an integer multiple of a period of the reference clock.

Abstract: An electronic device includes a communication circuit, a plurality of antennas that are fed with power from the communication circuit, and a processor that controls the communication circuit. The processor is configured to receive a first signal for indicating initiation of configuration for carrier aggregation. The processor is also configured to change the configuration of at least one of the antennas or the communication circuit to perform the carrier aggregation if a second signal for indicating operation initiation of the carrier aggregation is received from a base station.

Abstract: A system and method for a frequency detector circuit includes: a transition detector configured to receive a data input and provide a first edge output based on transitions in the data input; a first circuit configured to generate a second edge output; a second circuit configured to generate a third edge output; and a combinational logic configured to output an UP output when at least two of the first edge output, the second edge output, and the third edge output are high and configured to output a DOWN output when the first edge output, the second edge output, and the third edge output are all low.

Abstract: A receiving device includes first, second, and third circuits, and a processing circuit. The first circuit is configured to calculate a phase difference between a first clock signal and a data signal, which is a signal modulated by pulse-amplitude modulation. The second circuit is configured to generate a second clock signal based on the first clock signal and the phase difference. Jitter is added to second clock signal. The third circuit is configured to demodulate the data signal by comparing an amplitude of each pulse of the data signal with a threshold value at a timing synchronized to the second clock signal added the jitter. The processing circuit is configured to count the number of errors in the demodulated data signal and then calibrate the threshold value based on the counted number of errors.

Abstract: According to one aspect of the present disclosure, there is provided a device that includes: a first quadrature modulator configured to receive an in-phase portion of a baseband signal and a quadrature portion of the baseband signal, and to produce a first portion of an output signal according to the in-phase and quadrature portions of the baseband signal; a second quadrature modulator configured to receive a first modified signal and a second modified signal, and to produce a second portion of the output signal according to the first and second modified signals; an output circuit configured to sum the first and second portions of the output signal, and to transmit the output signal to an antenna; and a mode selection circuit configured to turn on the first quadrature modulator, to receive a control signal, and to determine whether to turn on the second quadrature modulator according to the control signal.

Abstract: A disclosure of the present specification provides a method for performing decoding by a terminal. The method may comprise the steps of: receiving a signal including an information bit and a frozen bit from a base station; and decoding the signal on the basis of a polar code, wherein the step of decoding is performed using a known bit block included in the frozen bit, the terminal and the base station have already known the known bit block before reception of the signal, and the known bit block is generated using an RNTI.