Huawei Technologies Co., Limited

Datang Mobile Communications Equipment Co., Ltd.

Beijing University of Technology

Zhe Tan

Wei Wang

Feng Li

Dean Pan

Jiwu Liu

Qijun Zhang

Xiaoguang Zhang

Ruhao Kong

A method for preparing an ecological foamed ceramic from lepidolite filter mud whole waste belongs to the field of environmental protection and resource reuse. The ecological foamed ceramic with excellent properties can be prepared by using lepidolite filter mud as the main raw materials, including ball milling, homogenization, drying, material distribution, and heat treatment. The amount of lepidolite filter mud in the present invention accounts for more than 90%, which is a whole waste utilization and can achieve high-value utilization of bulk lepidolite filter mud. The present invention uses a composite foaming agent combined with a foaming technology and has the advantages of rapid foaming and controllable pore size compared with a single foaming agent. The ecological foamed ceramic prepared by the present invention meets the industrial standard of CJ/T 299-2008 'Artificial ceramic filter material for water treatment' and has potential application value in domestic sewage treatment.

Method for preparing ecological foamed ceramic from lepidolite filter mud whole waste

The present invention discloses a working method of a multi-mode terminal and a multi-mode terminal and relates to the field of communications technologies, which can implement switching between multi-mode multi-standby and multi-mode single-standby, and improve user experience. The working method of a multi-mode terminal includes: determining, according to a network where a terminal currently camps, a currently applicable working mode of the terminal, where the currently applicable working mode is a multi-mode multi-standby mode and a multi-mode single-standby mode; and configuring a working mode of the terminal to the currently applicable working mode of the terminal. The present invention may be applied to the field of communications technologies.

Working method of multi-mode terminal and multi-mode terminal

Transmitting and receiving compensation coefficients of each antenna element relative to a calibration antenna element are obtained in the pre-calibration of a smart antenna. After the antenna array is installed, in transmitting calibration, amplitude and phase response of each transmitting link is computed according to the calibration signals received by the calibration link and, together with the transmitting compensation coefficient obtained in the pre-calibration, the compensation coefficient of each transmitting link is computed to compensate the downlink data of a base station. In receiving calibration, the amplitude and phase response of each receiving link is computed based on the signals received by the receiving links and, together with the receiving compensation coefficient obtained in pre-calibration, the compensation coefficient of each receiving link is computed to compensate the uplink data of the base station. The calibration signal of each antenna element is generated by a periodic cycling shift of a basic calibration sequence.

Method for calibrating smart antenna array systems in real time

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Beijing, China

Zhe Tan