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|1. (WO2018076305) INFORMATION TRANSMISSION METHOD, ACCESS NETWORK DEVICE, AND TERMINAL DEVICE|
|Applicants:||HUAWEI TECHNOLOGIES CO., LTD.
|Title:||INFORMATION TRANSMISSION METHOD, ACCESS NETWORK DEVICE, AND TERMINAL DEVICE|
The present invention provides an information transmission method, an access network device, and a terminal device. The method comprises: an access network device sends CSI-RS configuration parameters to a UE; after the access network device sends CSI-RS signals at each level to the UE according to the number of CSI-RS signals at each level, the access network device receives beamforming parameters at each level, which are reported by the UE for the CSI-RS signals at each level. The accuracy of a beam direction reported to the access network device is improved.