USER TERMINAL AND WIRELESS COMMUNICATION METHOD

WIPO Patent Application WO/2019/193688

A1

In order to suppress deterioration in communication quality even when at least one transmission/reception of a DL signal, HARQ-ACK, and the like is performed with a configuration different from an existing LTE system, a user terminal according to one embodiment of the present invention has: a reception unit that monitors at least one of a first down-control information format and a second down-control information format in a plurality of search space sets set for one or more cells and receives one or more pieces of down control information; and a control unit that controls transmission of retransmission control information (HARQ-ACK) corresponding to the down control information. At least one of bit arrangement of the HARQ-ACK and a counter value of a down allocation index (counter DAI value) is determined on the basis of at least one of a cell index, a search space index, and a down-control information format classification.

TAKEDA KAZUKI (JP)
NAGATA SATOSHI (JP)
GUO SHAOZHEN (CN)
WANG LIHUI (CN)
HOU XIAOLIN (CN)

PCT/JP2018/014444

October 10, 2019

April 04, 2018

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NTT DOCOMO INC (JP)

H04W72/04; H04W28/04

CATT: "Remaining details of NR CA operation", 3GPP TSG RAN WG1 MEETING #92 R1-1801740, 2 March 2018 (2018-03-02), XP051397721
LG ELECTRONICS: "Remaining issues on CA and HARQ- ACK codebook", 3GPP TSG RAN WG1 MEETING #92 R1- 1802217, 2 March 2018 (2018-03-02), XP051397222

AOKI, Hiroyoshi et al. (JP)

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