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1. (WO2018137591) METHOD AND SYSTEM FOR TRANSMITTING REFERENCE SIGNAL, BASE STATION, AND TERMINAL

Pub. No.:    WO/2018/137591    International Application No.:    PCT/CN2018/073715
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Wed Jan 24 00:59:59 CET 2018
IPC: H04L 5/00
Applicants: CHINA MOBILE COMMUNICATION LTD., RESEARCH INSTITUTE
中国移动通信有限公司研究院
CHINA MOBILE COMMUNICATIONS GROUP CO., LTD.
中国移动通信集团有限公司
Inventors: WANG, Ailing
王爱玲
WANG, Sen
王森
PAN, Chengkang
潘成康
ZUO, Jun
左君
XU, Guozhen
徐国珍
Title: METHOD AND SYSTEM FOR TRANSMITTING REFERENCE SIGNAL, BASE STATION, AND TERMINAL
Abstract:
Embodiments of the present disclosure provide a method and a system for transmitting a reference signal, a base station, and a terminal. The embodiments of the disclosure realize hybrid transmission of a wideband SRS and a sub-band SRS, and improve the flexibility of SRS transmission. In the embodiments of the present disclosure, reference signal overheads can be reduced by increasing a transmission period of the wideband SRS, and bandwidth configuration and transmission of the sub-band SRS are determined by a base station by considering historical CSI information of wideband SRS estimation in conjunction with a CQI reported by a terminal. In this way, an SRS transmission mode can be flexibly configured according to a terminal service status, without the need to transmit a plurality of sub-bands over a plurality of symbols by frequency hopping to cover an entire frequency band, which can improve resource utilization. In addition, the sub-band SRS in the embodiments of the present disclosure can be configured to be transmitted aperiodically, and "SRS reconfiguration indication" information thereof can be indicated by a DCI of a downlink control channel. In comparison with an RRC signaling configuration manner in LTE, the indication manner using a DCI can reduce a delay and is more suitable for high-speed motion scenarios.