公开(公告)号：US20190274167A1

公开(公告)日：2019-09-05

申请号：US16415881

申请日：2019-05-17

申请人： Huawei Technologies Co., Ltd.

发明人： Zhenyu LI ,  Hantao LI ,  Chuan LIU ,  Lei HU

IPC分类号： H04W74/08 ,  H04W72/12 ,  H04B17/318 ,  H04L1/00 ,  H04W72/08 ,  H04W52/24

摘要： Embodiments of the present disclosure provide a data transmission method and apparatus. The method includes: obtaining, by a base station, at least one clear channel assessment (CCA) detection threshold; determining a current CCA detection threshold from the at least one CCA detection threshold; determining transmit power of to-be-sent data based on the current CCA detection threshold; and sending the to-be-sent data to a target terminal based on the transmit power. In this way, a CCA detection threshold is flexibly selected, the transmit power is adaptively adjusted, and a probability of space division multiplexing and spectrum usage efficiency are improved, thereby increasing a system capacity and avoiding interference between systems.