Abstract: The invention provides a detailing process with waterproofing membrane parts and prefabricated accessories which includes below steps: place the first layer membrane on the base template while the edge of the first layer membrane beveled; place the edge of the second layer membrane partially overlapped with the edge of the first layer membrane and then fix the position, and place the membrane edge with bevel to the surface of the second layer membrane fittingly; the edge of the second layer is beveled; and the second bevel is directed towards the direction of the first layer membrane. Press together and make the second chamfered surface fixedly connected to the surface of the first layer. The waterproofing parts connection based on this process has high structural strength, a more complete and unified appearance, improves the waterproofing performance of the parts and accessories, and significantly enhances the service life of the membrane.

Abstract: A manned mower includes a vehicle frame and a support portion used for supporting a user; a traveling wheel set supporting the vehicle frame; a mowing element driven by a mowing electric motor; and a controller configured to apply a drive signal to a driver circuit to control the operation of the mowing electric motor. The controller is configured to receive a first electrical parameter related to the current of the mowing electric motor and when the first electrical parameter satisfies a first preset condition, limit the first electrical parameter within a preset range. When the first electrical parameter is limited within the preset range, the controller is further configured to selectively use a first method or a second method to determine the rotor position of the mowing electric motor so that the mowing electric motor does not stop when the first electrical parameter is within the preset range.

Abstract: The technology of this application relates to a terminal device configured to receive a first message from a first access network device, where the first message is used by the terminal device to obtain a timing advance (TA) of the terminal device in a target cell, and the target cell is not a cell currently accessed by the terminal device. The terminal device is configured to send a second message to the first access network device, where the second message indicates that the terminal device has completed configuration of the target cell. In embodiments of this application, the terminal device is configured to receive the first message from the first access network device.

Abstract: Embodiments of this application provide a scheduling method and apparatus, and relate to the communications field. The method includes: Abase station obtains information about predicted interference of N downlink signals of the base station to an uplink signal, where N is an integer greater than 1, and the information about predicted interference is used to indicate predicted interference impact, on the uplink signal, of passive intermodulation signals generated by interaction between the N downlink signals. Then, the base station may perform resource scheduling on the N downlink signals and/or the uplink signal based on the obtained information about predicted interference, where the resource scheduling includes frequency domain resource scheduling and space domain resource scheduling. In this application, the interference impact of the passive intermodulation signals can be effectively reduced, thereby improving system performance and radio resource utilization.

Abstract: Embodiments of this application provide a data compression method, a data decompression method, and a communication apparatus. The communication apparatus may be a baseband unit (BBU), a remote radio unit (RRU), or the like. The method may be used for data compression and decompression. During data compression, the communication apparatus may obtain first data based on N pieces of original data, an amount K of combined data, and a data bit width L of the combined data, where the first data is data obtained by compressing the original data, a data bit width corresponding to the first data is ?, ? is a non-integer greater than 0, and N, K, and L are positive integers; then determine the combined data based on ? and the first data; and output the combined data.

Abstract: A method for determining a quantity of passive inter-modulation sources. A quantity of passive inter-modulation sources of a multi-antenna device is obtained. An interference signal that is excited by a sounding signal and that is from a passive inter-modulation source is received. Singular value decomposition is performed on a first matrix corresponding to the interference signal. A quantity of passive inter-modulation sources is determined based on a result of the singular value decomposition. In this way, the quantity of passive inter-modulation sources of the multi-antenna device is directly determined by performing operations including signal receiving and sending and calculation of the multi-antenna device, to implement convenient, accurate, and secure detection of information about the quantity of the passive inter-modulation sources of the multi-antenna device.

Abstract: This application provides a signal processing method and a communication apparatus. The method includes: if it is detected that at least one signal feature of each carrier signal in a first combined signal changes, determining, based on the signal feature of each carrier signal, a first clipping noise power corresponding to each carrier signal; and performing clipping on each carrier signal based on the first clipping noise power corresponding to each carrier signal. The signal feature includes one or more of a power, a bandwidth, a frequency, a power spectral density, or a modulation scheme. According to this method, clipping processing is performed on each carrier signal, to reduce a PAPR in an OFDM system. In addition, when the signal feature of each carrier signal changes, an access network device may determine a clipping noise power of each carrier signal based on a changed signal feature of each carrier signal.

Abstract: PAPR suppression includes a first clipping module and a second clipping module. The second clipping module outputs, to the first clipping module, a to-be-clipped signal that satisfies an input condition of the first clipping module, where the input condition includes a peak distribution feature of an input signal. The first clipping module performs first clipping processing on the to-be-clipped signal to obtain a first clipped signal. PAPR suppression is performed based on collaboration between the two clipping modules.

Abstract: This application provides a passive inter-modulation source positioning method and an apparatus, and relates to the field of wireless communications technologies. The method includes: A network device sequentially performs a scanning process on each of a plurality of scanning spots by using the following steps: sending a plurality of downlink signals with different frequencies for a first scanning spot by using a transmit antenna, and receiving an uplink PIM signal for the first scanning spot by using a receive antenna, where the first scanning spot is any one of the plurality of scanning spots, and the uplink PIM signal is generated by excitation by any at least two of the plurality of downlink signals; and the network device determines a PIM source from the plurality of scanning spots based on uplink PIM signals respectively corresponding to the plurality of scanning spots.

Abstract: A passive intermodulation (PIM) fault point detection method includes sending, by an antenna feeder system of a network device, a plurality of downlink signals of different corresponding frequencies, and receiving a first signal, wherein the first signal is an uplink PIM signal generated by excitation by at least two downlink signals of the plurality of downlink signals. The PIM method further includes determining, by the network device, second signals corresponding to a plurality of detection points, wherein a second signal of the second signals corresponds to a detection point of the plurality of detection points, and is a pre-estimated signal for a PIM signal of the detection point. The PIM method further includes determining, by the network device, a PIM fault point from the plurality of detection points based on the first signal and the second signals corresponding to the plurality of detection points.

Abstract: This application provides a communication method, applied to beam sweeping. The method includes: obtaining system load of a cell at a current moment; configuring a quantity of sweeping beams in a sweeping periodicity based on the system load at the current moment; and configuring a quantity of shutdown symbols based on the quantity of sweeping beams. This application further provides a communication apparatus, a communication device, and a computer-readable storage medium, to resolve a technical problem in a conventional technology that a plurality of symbols are always in a power consumption state and energy overheads are high because a fixed quantity of beams are used for sweeping to enhance coverage, so that a base station saves more energy.

Abstract: Example signal receiving methods and apparatus are described. One example method includes receiving a time-domain signal sent by a sending device. The time-domain signal is replicated to obtain N time-domain signals. N window functions are configured, where the N window functions are in a one-to-one correspondence with the N time-domain signals. An operation is performed on each of the N time-domain signals based on a corresponding window function to obtain N windowed time-domain signals. The N windowed time-domain signals are separately converted to obtain N frequency-domain signals. An RB corresponding to an interference frequency is determined. One or more RBs are selected from each of the N frequency-domain signals and are arranged in sequence based on indexes to obtain a target frequency-domain signal.

Abstract: Embodiments of this application provide a scheduling method and apparatus, and relate to the communications field. The method includes: Abase station obtains information about predicted interference of N downlink signals of the base station to an uplink signal, where N is an integer greater than 1, and the information about predicted interference is used to indicate predicted interference impact, on the uplink signal, of passive intermodulation signals generated by interaction between the N downlink signals. Then, the base station may perform resource scheduling on the N downlink signals and/or the uplink signal based on the obtained information about predicted interference, where the resource scheduling includes frequency domain resource scheduling and space domain resource scheduling. In this application, the interference impact of the passive intermodulation signals can be effectively reduced, thereby improving system performance and radio resource utilization.

Abstract: Embodiments relate to a signal quality control method and a base station. The method includes: determining, by the base station based on a clipping threshold corresponding to each of the plurality of antennas, a time-domain noise signal for clipping a first time-domain signal of each antenna; performing time-frequency transformation on the time-domain noise signal of each antenna to obtain a first frequency-domain noise signal; processing the first frequency-domain noise signals of the plurality of antennas jointly to decompose the first frequency-domain noise signals into a second frequency-domain noise signal set in L flow directions and/or a third frequency-domain noise signal set in a complementary space of the L flows; and using the second frequency-domain noise signal set and/or the third frequency-domain noise signal set to clip the first time-domain signal set. According to the embodiments, noise signals are processed jointly.

Abstract: Embodiments of this application disclose a signal receiving method, apparatus, and device. The method includes: receiving a time-domain signal sent by a sending device; replicating the time-domain signal to obtain N time-domain signals; configuring N window functions, where the N window functions are in a one-to-one correspondence with the N time-domain signals; performing an operation on each of the N time-domain signals based on a corresponding window function to obtain N windowed time-domain signals; separately converting the N windowed time-domain signals to obtain N frequency-domain signals; determining an RB corresponding to an interference frequency; selecting several RBs from each of the N frequency-domain signals; and arranging the selected RBs in sequence based on indexes to obtain a target frequency-domain signal.

Abstract: Embodiments relate to a signal quality control method and a base station. The method includes: determining, by the base station based on a clipping threshold corresponding to each of the plurality of antennas, a time-domain noise signal for clipping a first time-domain signal of each antenna; performing time-frequency transformation on the time-domain noise signal of each antenna to obtain a first frequency-domain noise signal; processing the first frequency-domain noise signals of the plurality of antennas jointly to decompose the first frequency-domain noise signals into a second frequency-domain noise signal set in L flow directions and/or a third frequency-domain noise signal set in a complementary space of the L flows; and using the second frequency-domain noise signal set and/or the third frequency-domain noise signal set to clip the first time-domain signal set. According to the embodiments, noise signals are processed jointly.

Abstract: Embodiments of the present invention provide a method and a device for reducing intermodulation interference. The method includes: performing real-time estimation according to time domain information of M downlink transmit signals, to obtain a first intermodulation interference signal; and cancelling, according to the first intermodulation interference signal, intermodulation interference generated by the M downlink transmit signals in an uplink receive signal, where M is an integer greater than or equal to 2, and the M downlink transmit signals are baseband signals that are transmitted on M carriers and that are not combined. Based on the foregoing solutions, the actually generated intermodulation interference can be effectively cancelled, thereby reducing intermodulation interference and improving system performance.

Abstract: Embodiments of the present invention provide an adaptive narrowband interference cancellation method and an apparatus. A receiving apparatus in the present invention includes: a channel type determining module, configured to: measure a delay spread of a multipath channel passed by a received time-domain signal, and determine a channel type according to a measurement result; a weighting coefficient selection module, configured to select a weighting coefficient according to the channel type; a time-domain windowing processing module, configured to perform time-domain windowing processing on the time-domain signal according to the weighting coefficient; and a frequency-domain interference cancellation processing module, configured to perform, according to the weighting coefficient, frequency-domain interference cancellation processing on the signal that is output after the time-domain windowing processing.

Abstract: The present disclosure relates to a power control method and apparatus, where the method includes: respectively determining, by a base station, error vector magnitude EVM indicator adjustment parameters of n terminals according to terminal types of the n terminals that are currently scheduled; processing, according to the EVM indicator adjustment parameters of the n terminals, to-be-transmitted signals of the n terminals to obtain an output signal, and determining a change of total power of the output signal relative to the to-be-transmitted signals; and dynamically controlling a supply voltage of a power amplifier according to the change of the total power of the output signal relative to the to-be-transmitted signals. According to the power control method and apparatus provided in embodiments of the present disclosure, different processing is performed on signals of different terminals, so that system performance of the OFDM system is improved.

Abstract: Embodiments of the present invention provide an adaptive narrowband interference cancellation method and an apparatus. A receiving apparatus in the present invention includes: a channel type determining module, configured to: measure a delay spread of a multipath channel passed by a received time-domain signal, and determine a channel type according to a measurement result; a weighting coefficient selection module, configured to select a weighting coefficient according to the channel type; a time-domain windowing processing module, configured to perform time-domain windowing processing on the time-domain signal according to the weighting coefficient; and a frequency-domain interference cancellation processing module, configured to perform, according to the weighting coefficient, frequency-domain interference cancellation processing on the signal that is output after the time-domain windowing processing.