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1. (WO2018099328) COMMUNICATION METHOD, BASE STATION AND TERMINAL DEVICE

Pub. No.:    WO/2018/099328    International Application No.:    PCT/CN2017/112838
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Sat Nov 25 00:59:59 CET 2017
IPC: H04W 72/04
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: HUANG, Lei
黄磊
WANG, Yi
王艺
Title: COMMUNICATION METHOD, BASE STATION AND TERMINAL DEVICE
Abstract:
Provided by the present application are a communication method, a base station and a terminal device: a base station transmitting a downlink reference signal (DLRS) and first downlink control information (DCI) to a terminal device by means of a low-frequency band, the first DCI comprising indication information of an uplink reference signal (ULRS), and the DLRS being used by the terminal device to determine a receiving beam used in receiving downlink data on a high-frequency band; the terminal device transmitting the ULRS by means of the low-frequency band according to the indication information of the ULRS; the base station determining the transmitting beam used in transmitting downlink data on the high-frequency band according to the ULRS; the terminal device determining a receiving beam used in receiving the downlink data on the high-frequency band according to the DLRS; and the base station using a high frequency resource allocated for the terminal device and the transmitting beam to transmit downlink data to the terminal device. The method carries out beam training by means of a low-frequency band assisting a high-frequency band so as to transmit high-frequency data.