USER DEVICE AND RADIO COMMUNICATION METHOD

WIPO Patent Application WO/2019/138514

A1

The purpose of the present invention is to improve the performance of an uplink control channel to be code-division-multiplexed among multiple user devices. The user device has: a transmission unit for transmitting an uplink control channel, including data to which an orthogonal cover code is applied prior to discrete Fourier transform and a demodulation reference signal to which a cyclic shift is applied; and a control unit for performing control for the determination of the cyclic shift on the basis of an index of the orthogonal cover code, a time resource for the demodulation reference signal, and the length of the orthogonal cover code or the maximum value of the length.

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MATSUMURA YUKI (JP)
TAKEDA KAZUKI (JP)
NAGATA SATOSHI (JP)

PCT/JP2018/000526

July 18, 2019

January 11, 2018

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NTT DOCOMO INC (JP)

H04J13/16; H04L27/26

JP2013219501A	2013-10-24
JP2011250139A	2011-12-08

ZTE ET AL.: "Discussion on uplink DMRS design", 3GPP TSG RAN WG1 MEETING #88 RL-1701816, 17 February 2017 (2017-02-17), XP051208982
"Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8", 3GPP TS 36.300 V8.12.0, April 2010 (2010-04-01)

AOKI, Hiroyoshi et al. (JP)

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