Huawei Technologies Co., Limited

Montage Technology Co., Ltd.

Tektronix, Inc.

Ye Yang

Gang Shan

Jingzhong Yang

Xin Meng

Kai Chen

Senbao Guo

Weihong Xiao

Chunbin Li

Dingjiu Daojian

Ming Li

Sicong Zhu

Yufang Li

Fan Huang

Xu Jiang

Hua Wei

Bailong Su

Jiapeng Zhang

A channel measurement method includes: receiving a plurality of reference signals in a plurality of first frequency domain units in a same time domain unit, where the plurality of reference signals may be respectively precoded by using precoding matrices corresponding to the first frequency domain units in which the plurality of reference signals are located, and precoding matrices corresponding to at least two different first frequency domain units in the plurality of first frequency domain units are different; generating a precoding matrix indicator (PMI) based on the plurality of reference signals, where the PMI indicates a plurality of codewords corresponding to a plurality of second frequency domain units, the plurality of second frequency domain units and the plurality of first frequency domain units belong to a same frequency domain resource, and the plurality of codewords may be used for determining a downlink channel; and sending the PMI.

Channel measurement method and precoding method and apparatus

Embodiments of this application disclose a communication method and apparatus. Therefore, a beam gain of downlink channel transmission is improved, and a phase mismatch performance loss is small. The method in embodiments of this application includes: A network device may determine a first downlink statistical autocorrelation matrix of a downlink channel based on a first uplink statistical autocorrelation matrix of an uplink channel, indicate, based on a first weight indicated by a terminal, the terminal to receive a second weight of data, then determine a third weight different from the second weight based on the first downlink statistical autocorrelation matrix and the second weight, and send the data to the terminal based on the third weight.

Communication method and apparatus

A device and method for controlling the audio level of a device are provided. The device includes a housing, a roll unit mounted such that it is able to rotate in the housing, a flexible, touch-sensitive display configured to be rolled on the roll unit around a roll axis so that a first, curved portion of the display forms a side screen bent around the roll unit, and a second, planar portion of the display forms a front screen, wherein the area of the front screen changes according to a rotation of the roll unit, and a controller configured to adjust, in response to detecting a predefined multi-touch gesture on the side screen, an audio output volume of the device.

Volume adjusting gesture and mistouch prevention on rolling devices

An apparatus: obtains K downlink channel weight matrices based on K pieces of downlink channel information sent by K UEs, where the downlink channel information is fed back by the UE in response to a preset reference signal sent by the base station, the downlink channel weight matrix is an N×rank-dimensional matrix, and rank is a quantity of signal streams received by the UE; obtains K×rank first initial phase difference matrices and K×rank second initial phase difference matrices based on the K downlink channel weight matrices and a first polarization direction and a second polarization direction of transmit channels of the base station; obtains a cell initial phase difference matrix based on the K×rank first initial phase difference matrices and the K×rank second initial phase difference matrices; and implements initial phase correction of the transmit channels based on the cell initial phase difference matrix.

Transmit channel initial phase correction method and apparatus

A test and measurement instrument including a signal generator configured to generate a waveform to be sent over a cable to a device under test (DUT) and a real-time waveform monitor (RTWM) circuit. The RTWM is configured to determine a propagation delay of the cable, capture a first waveform, including an incident waveform and a reflection waveform at a first test point between the signal generator and the DUT, capture a second waveform including at least the incident waveform at a second test point between the signal generator and the DUT, determine a reflection waveform and the incident waveform based on the first waveform and the second waveform, and determine a DUT waveform based on the incident waveform, the reflection waveform, and the propagation delay. The DUT waveform represents the waveform generated by the signal generator as received by the DUT.

Monitoring waveforms from waveform generator at device under test

A computing system includes a host computing device and a slave computing device. The host computing device comprises a host processor, a host device memory and a host address mapping management. The host address mapping management manages a system memory page table, and converts, in response to a data access request from a processing process run on the host processor, requested virtual addresses into host device physical addresses based on the system memory page table to allow the processing process to access corresponding host storage units. The slave computing device includes a slave processor callable by the host processor to assist the host processor in running the processing processes, a slave device memory and a slave address mapping management unit. The slave address mapping unit converts, in response to a data access request of the processing process, requested virtual addresses into slave device physical addresses based on the slave device memory page table, to allow the slave processor to access corresponding slave storage units to assist the host processor in running the processing process.

Computing system and method for sharing device memories of different computing devices

The present application pertains to a processing device or a distributed processing system using the processing device. The processing device comprises an instruction parsing module configured to receive a data processing instruction indicating a predetermined data processing operation on target data, wherein the data processing instruction comprises a task type field, a data processing operation field, and a data address field; and determine whether the data processing instruction carries the target data according to the task type field; and a data processing module performing the predetermined data processing operation on the target data according to the data processing operation field; wherein, when the data processing instruction carries the target data, the data processing module receives the target data carried by the data processing instruction from the instruction parsing module to perform the predetermined data processing operation on the target data; when the data processing instruction carries the storage address of the target data in the storage module, the processing device accesses the storage module according to the storage address and obtains the target data stored in the storage module.

Processing devices and distributed processing systems

Embodiments of the present invention provide a channel state information feedback method, a terminal device, and a network device. The method includes: sending, by a terminal device, matrix information of a dimension reduction matrix to a network device, where a first dimension of the dimension reduction matrix is the same as a quantity of transmit antenna ports of the network device, and a second dimension of the dimension reduction matrix is less than the first dimension of the dimension reduction matrix; and sending, by the terminal device, vector information of an eigenvector of a downlink equivalent channel to the network device, where the eigenvector of the downlink equivalent channel is obtained based on the dimension reduction matrix.

Channel state information feedback method, terminal device, and network device

Antenna elements () used for multi-band antenna dual polarization include: four radiating elements (), a balun element configured to feed power to the radiating elements (), and a fastening plate () configured to fasten the balun element. The balun element includes two dielectric plates (). Two signal transmission units (), one feeding unit (), and two filtering units () are printed on each dielectric plate (). An LC resonant energy storage structure is constructed on the balun element by using the filtering units (), and decoupling on a specific frequency band can be implemented by adjusting the filtering unit (). Therefore, even if the antenna elements () are applied to a scenario in which elements on different frequency bands work collaboratively, radiating elements () on different frequency bands are not coupled electromagnetically and strongly when the radiating elements are arranged closely.

Growing community of inventors

Shanghai, China

Ye Yang