China Academy of Telecommunications Technology

Chinese Academy of Sciences

Datang Mobile Communications Equipment Co., Ltd.

Qiong Li

Rui Zhao

Qingyun Di

Bin Ren

Li Li Zhao

Xiao Feng

Lin Zhao

Shuquan Sun

Aimin Du

Heng Tang

Cuihong Li

Qiubin Gao

Hao Liu

Ying Peng

Shaoli Kang

Rui Shi

Long Liu

Mingyu Xu

Feiqiong Luo

A beam tracking method and apparatus, describes that, during vehicle platooning, following vehicles have a low reliability of receiving a beam signal and a low speed of discovering a beam signal. Said method includes: receiving first position information of a designated vehicle obtaining, on the basis of the first position information and second position information of a following vehicle, relative position information of the designated vehicle and the following vehicle; and tracking, according to the relative position information, a beam transmitted by the designated vehicle.

Beam tracking method and apparatus

A method and device for BWP allocation are discloses. First, difference information between a first node and a second node is determined; then, whether an allocation condition is satisfied is determined according to the difference information and the reliability requirement of a service corresponding to a BWP needing to be allocated to the first node, and if the allocation condition is satisfied, the BWP is allocated to the first node in a time unit corresponding to the second node; and at this time, the second node can resist trailing signal interference by means of a coding gain, etc.

Method and device for BWP allocation

An electronic magnetometer and a method for measuring a magnetic field are provided. A Gunn diode with magnetic shielding and a Gunn diode without magnetic shielding generate different induced high-frequency oscillating currents in various environments. The high-frequency oscillating current of the Gunn diode with magnetic shielding and the high-frequency oscillating current of the Gunn diode without magnetic shielding are processed by circuits and subsequently compared. The difference of frequencies in the two currents is proportional to the magnitude of magnetic field, and the magnitude of magnetic field is obtained.

Electronic magnetometer and method for measuring magnetic field

A magnetic field based micro-vibration measurement device and a measuring therefore are provided, which are applied in a micro-vibration measurement technical field. Fluxgate sensors and a control processing circuit are included. Each of the fluxgate sensors is disposed with an excitation coil and an induction coil that are mutually corresponding; the control processing circuit includes: an excitation signal generating module, a frequency-selective amplifying module, a phase-sensitive rectifying module, a smooth filtering module an ambient magnetic field acquisition module, and a vibration data statistics module. Excitation coils generate excitation magnetic field signals according to the excitation signal sent from the excitation signal generating module the induction coils are for generating induced current signals according to the receive excitation magnetic field signal and the ambient magnetic field signal. Induced current signals are calculated to obtain ambient magnetic field data after sequentially undergoing selective amplification, rectification and smooth filtering.

Magnetic field based micro-vibration measurement device and measuring method thereof

A signal detection method and a signal detection device are provided. The signal detection method includes steps of: performing channel estimation based on a signal received by each of antennae, to acquire a channel estimation matrix for transmitters multiplexing on identical time-frequency resources on each of the antennae; determining an equivalent Pattern Division Multiple Access (PDMA) channel estimation matrix for each of the antennae based on a PDMA encoding matrix, and acquiring an equivalent multi-antenna PDMA channel estimation matrix for all the antennae based on the equivalent PDMA channel estimation matrix for each of the antennae; performing a joint detection based on the equivalent multi-antenna PDMA channel estimation matrix, an equivalent multi-antenna received signal vector and a set of constellation points of the transmitters multiplexing on the identical time-frequency resources, to acquire Log Likelihood Ratios (LLRs) for the transmitters; and decoding the LLRs for the transmitters, to acquire multi-user information at transmitting end.

Signal detection method and signal detection device

The present disclosure provides a PUSCH power control method and a PUSCH power control apparatus. According to the present disclosure, the interference of a current cell on its adjacent cells is determined in accordance with interference level information from the adjacent cells, so it is able to adjust PUSCH power for a current cell user, thereby to perform the power control in accordance with the interference among the adjacent cells.

Physical uplink shared channel power control method and apparatus that carry out power control in accordance with adjacent cell interference

Disclosed are a method and device for data compression, transmission, and decompression. In the present method, data-to-be-transmitted is grouped by a transmitting terminal, and for each group: a shift factor is determined based on the most significant bit of sample data of the greatest value in the group when a sign bit is removed, data bits of the sample data in the group are left shifted by the shift factor; the left shifted sample data respectively are quantified, thus making the bit number of the quantified sample data to be equal to a predefined bit number; the shift factor and the quantified sample data are transmitted to a receiving terminal. Employment of the present application optimizes data compression performance.

Method and device for data compression, transmission, and decompression

Disclosed are a double-stream beamforming method and device, which relate to communication technology. The method comprises: first, according to a DOA angle, determining an array response vector; then according to the array response vector, in accordance with the number of each group of transmission antennae of a base station, distributing parameters to generate two groups of coefficients, and according to the two groups of coefficients, conducting beamforming on the antennae. There is no need to conduct characteristic value decomposition to obtain a characteristic vector, thereby reducing the double-stream beamforming complexity.

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Beijing, China

Qiong Li