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1. (WO2018201785) INCOMPLETE SUBFRAME TRANSMISSION AND DEMODULATION METHOD, CORRESPONDING USER EQUIPMENT AND BASE STATION

Pub. No.:    WO/2018/201785    International Application No.:    PCT/CN2018/077841
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Sat Mar 03 00:59:59 CET 2018
IPC: H04L 5/00
Applicants: NTT DOCOMO, INC.
株式会社NTT都科摩
Inventors: JIANG, Yu
姜宇
LIU, Liu
刘柳
LI, Anxin
李安新
HARADA, Hiroki
原田浩树
NAGATA, Satoshi
永田聪
Title: INCOMPLETE SUBFRAME TRANSMISSION AND DEMODULATION METHOD, CORRESPONDING USER EQUIPMENT AND BASE STATION
Abstract:
Provided are a method for transmitting and demodulating an uplink incomplete subframe in unlicensed spectrum, and corresponding user equipment and a base station. The method for transmitting the uplink incomplete subframe in an unlicensed spectrum comprises: determining a transmission mode of the demodulation reference signal (DMRS) for an incomplete subframe, according to at least one of the number of layers of uplink transmission specified by uplink scheduling information UL grant and the number of orthogonal layers supported by the incomplete subframe, and the number of the symbols of demodulation reference signal (DMRS) included in the incomplete subframe; and transmitting the incomplete subframe by using the determined transmission mode of DMRS. According to the transmission method of the present disclosure, the UL grant of the incomplete subframe can be compatible with the UL grant of a normal subframe, and the subframe is transmitted on as many orthogonal layers as possible.