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1. (WO2017031625) DE-MODULATION REFERENCE SIGNAL TRANSMISSION METHOD AND APPARATUS, AND COMMUNICATIONS SYSTEM

Pub. No.:    WO/2017/031625    International Application No.:    PCT/CN2015/087753
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Sat Aug 22 01:59:59 CEST 2015
IPC: H04W 72/04
Applicants: FUJITSU LIMITED
富士通株式会社
ZHOU, Hua
周华
XI, Wei
郤伟
Inventors: ZHOU, Hua
周华
XI, Wei
郤伟
Title: DE-MODULATION REFERENCE SIGNAL TRANSMISSION METHOD AND APPARATUS, AND COMMUNICATIONS SYSTEM
Abstract:
A de-modulation reference signal transmission method and apparatus, and a communications system. The transmission method comprises: a transmitting end sends a de-modulation reference signal to a receiving end, a symbol for transmitting the de-modulation reference signal in each sub-frame being configured to be one or more than two. Therefore, configuring more than two symbols for transmitting a DMRS in each sub-frame can add the transmission density of the DMRS and satisfy a requirement of a new service such as V2X for a moving speed. Alternatively, configuring a single symbol for transmitting a DMRS in each sub-frame can satisfy a requirement of a low-speed moving service such as Cellular IOT and reduce the overheads.