US 10,433,296 B2
User terminal, radio base station and radio communication method
Kazuki Takeda, Tokyo (JP); Kazuaki Takeda, Tokyo (JP); Hideaki Takahashi, Tokyo (JP); Hiromasa Umeda, Tokyo (JP); and Satoshi Nagata, Tokyo (JP)
Assigned to NTT DOCOMO, INC., Tokyo (JP)
Filed by NTT DOCOMO, INC., Tokyo (JP)
Filed on Jul. 25, 2018, as Appl. No. 16/44,776.
Application 16/044,776 is a continuation of application No. 15/039,235, abandoned, previously published as PCT/JP2014/080071, filed on Nov. 13, 2014.
Claims priority of application No. 2013-244047 (JP), filed on Nov. 26, 2013; application No. 2014-021429 (JP), filed on Feb. 6, 2014; and application No. 2014-033562 (JP), filed on Feb. 25, 2014.
Prior Publication US 2018/0359734 A1, Dec. 13, 2018
Int. Cl. H04W 72/04 (2009.01); H04L 5/14 (2006.01); H04W 72/12 (2009.01)
CPC H04W 72/042 (2013.01) [H04L 5/1415 (2013.01); H04W 72/0413 (2013.01); H04W 72/1252 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A user terminal that carries out radio communication with a primary cell and a secondary cell, the user terminal comprising:
a receiver that, when a connection is established with a TDD cell, receives configuration information about a given DL/UL configuration that is selected from a plurality of DL/UL configurations; and
a processor that controls transmission and reception to and from the TDD cell based on the received DL/UL configuration,
wherein, if the primary cell is an FDD cell and DL communication is applied to the secondary cell throughout a period to which the configuration information about the DL/UL configuration is applied, then the processor feeds back an A/N in response to each DL subframe of the secondary cell by using a given UL subframe of a primary cell.