USER TERMINAL, RADIO BASE STATION, AND RADIO COMMUNICATION METHOD

WIPO Patent Application WO/2015/107843

A1

The purpose of the present invention is to achieve dynamic time division duplex (TDD) that is based on the assumption of time division duplex-frequency division duplex carrier aggregation (TDD-FDD CA) and is not dependent on a TDD uplink-downlink (UL-DL) configuration. The present invention provides a user terminal that performs radio communication with multiple cells through the application of carrier aggregation and is provided with: a reception unit that receives control information and an uplink signal transmission timing transmitted from a primary cell when connecting to a secondary cell that is a dynamic TDD cell, said control information including a dynamic instruction regarding the sub-frame configuration of the dynamic TDD cell; and a control unit that determines whether one or more sub-frames of the dynamic TDD cell are uplink sub-frames or downlink sub-frames on the basis of the control information and controls the timing for transmitting an uplink signal on the basis of the transmission timing.

YASUKAWA SHIMPEI (JP)
TAKEDA KAZUKI (JP)
NAGATA SATOSHI (JP)

PCT/JP2014/084157

July 23, 2015

December 24, 2014

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NTT DOCOMO INC (JP)

H04W28/06; H04J3/06; H04W4/00; H04W72/04; H04W74/08

WO2013066387A1	2013-05-10
WO2012175030A1	2012-12-27

NTT DOCOMO INC: "Introduction of additional TDD UL/DL configuration in Rel-12", 3GPP TSG-RAN #62 RP- 131781, 2 December 2013 (2013-12-02), pages 1 - 11, XP050733943
NEC: "On support of DL and UL cross-carrier scheduling in TDD-FDD CA", 3GPP TSG RAN WG1 MEETING #75 RL-135835, 8 November 2013 (2013-11-08), pages 1 - 6, XP050751277

AOKI, Hiroyoshi et al. (JP)
Hiroyoshi Aoki (JP)

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