Huawei Technologies Co., Limited

Huaizhi Zhang

Weimin Chen

Qing Wang

Sunjie Wang

Xiufeng Wu

Bo Han

Li Wen

Lu Guan

Junfeng Gao

Zhengzheng Li

Lang Wang

Mei Jian

Daniele Inserra

Guangjun Wen

This application discloses example radio frequency identification systems and example methods for constructing a relay network, a reader, and a repeater. One example radio frequency identification system includes a reader, a repeater, and a target tag. The reader can be configured to send a first signal to the repeater. The repeater can be configured to send an excitation signal to the target tag based on the first signal. The target tag can be configured to send a target backscatter signal based on excitation of the excitation signal, where the target backscatter signal carries electronic product code information. The reader can be further configured to receive the target backscatter signal and obtain the electronic product code information in the target backscatter signal.

Radio frequency identification system, method for constructing relay network, reader, and repeater

The antenna in the embodiments provided includes: a first-layer antenna, a second-layer antenna, a first probe, a second probe, a first connector, and a second connector. An annular microstrip patch is attached to each of main bodies of the first-layer antenna and the second-layer antenna. The annular microstrip patch attached to the first-layer antenna is provided with a first feeding network and a second feeding network therein. The first-layer antenna is connected to the first probe and the second probe by using the first feeding network and the second feeding network respectively. The first-layer antenna is connected to the first connector and the second connector. A position of the first connector corresponds to a position where the first probe is connected to the first-layer antenna. A position of the second connector corresponds to a position where the second probe is connected to the first-layer antenna.

Antenna, peripheral circuit, antenna system, and signal processing method

A joint channel correction method, an apparatus, and a system are disclosed. The joint channel correction method includes: sending a first joint channel correction instruction to a first RRU; sending a second joint channel correction instruction to a second RRU; receiving a result sent by the second RRU about reception of the first correction reference signal through X2 receive channels in X2 traffic channels; receiving a result sent by the first RRU about reception of the second correction reference signal through X1 receive channels in X1 traffic channels; and obtaining correction compensation coefficients of the X1 traffic channels and/or the X2 traffic channels through calculation. Technical solutions provided by embodiments of the present application help implement channel correction between RRUs without a channel self-correction function.

Joint channel correction method, related apparatus, and system

Disclosed is a transmission method compatible with higher order modulation and lower order modulation, and an apparatus. A base station stores a first higher order modulation mapping table supporting the higher order modulation and a first lower order modulation mapping table supporting the lower order modulation; the base station receives capability level information sent by user equipment; the base station determines, according to the capability level information sent by the user equipment, a first modulation mapping table used to communicate with the user equipment; the base station determines a modulation and coding scheme index according to the modulation mapping table, where the modulation and coding scheme index is used by the user equipment to determine a modulation and coding scheme; and the modulation and coding scheme index is sent to the user equipment.

Transmission method compatible with higher order modulation and lower order modulation, and apparatus

Growing community of inventors

Chengdu, China

Huaizhi Zhang