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Patent Searching and Data


Title:
USER DEVICE AND RADIO COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/138514
Kind Code:
A1
Abstract:
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.

Inventors:
MATSUMURA, Yuki (NTT DOCOMO INC., SANNO PARK TOWER, 11-1, Nagatacho 2-chome, Chiyoda-k, Tokyo 50, 〒1006150, JP)
TAKEDA, Kazuki (NTT DOCOMO INC., SANNO PARK TOWER, 11-1, Nagatacho 2-chome, Chiyoda-k, Tokyo 50, 〒1006150, JP)
NAGATA, Satoshi (NTT DOCOMO INC., SANNO PARK TOWER, 11-1, Nagatacho 2-chome, Chiyoda-k, Tokyo 50, 〒1006150, JP)
Application Number:
JP2018/000526
Publication Date:
July 18, 2019
Filing Date:
January 11, 2018
Export Citation:
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Assignee:
NTT DOCOMO, INC. (11-1, Nagatacho 2-chome Chiyoda-k, Tokyo 50, 〒1006150, JP)
International Classes:
H04J13/16; H04L27/26
Foreign References:
JP2013219501A2013-10-24
JP2011250139A2011-12-08
Other References:
ZTE ET AL.: "Discussion on uplink DMRS design", 3GPP TSG RAN WG1 MEETING #88 RL-1701816, 17 February 2017 (2017-02-17), XP051208982
Attorney, Agent or Firm:
AOKI, Hiroyoshi et al. (5F JS Ichigaya Bldg, 5-1 Goban-cho, Chiyoda-k, Tokyo 76, 〒1020076, JP)
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