US 11,902,069 B2
Terminal and radio communication method
Yuki Matsumura, Tokyo (JP); Yuichi Kakishima, Palo Alto, CA (US); and Satoshi Nagata, Tokyo (JP)
Assigned to NTT DOCOMO, INC., Tokyo (JP)
Appl. No. 17/627,970
Filed by NTT DOCOMO, INC., Tokyo (JP)
PCT Filed Aug. 2, 2019, PCT No. PCT/JP2019/030604
§ 371(c)(1), (2) Date Jan. 18, 2022,
PCT Pub. No. WO2021/024329, PCT Pub. Date Feb. 11, 2021.
Prior Publication US 2022/0278880 A1, Sep. 1, 2022
Int. Cl. H04L 27/26 (2006.01); H04L 5/00 (2006.01); H04J 13/00 (2011.01)
CPC H04L 27/2613 (2013.01) [H04J 13/004 (2013.01); H04L 5/0016 (2013.01); H04L 5/0051 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A terminal comprising:
a processor that,
if receiving configuration information of a demodulation reference signal (DMRS) having a greater number of configurable ports than a given number, applies a frequency domain orthogonal cover code (FD-OCC) having a sequence length of a number greater than two to a first DMRS, the first DMRS being mapped to first resource elements having mutually different frequencies, a number of the first resource elements being the number greater than two, and
if not receiving the configuration information, applies an FD-OCC having a sequence length of two to a second DMRS, the second DMRS being mapped to second resource elements having mutually different frequencies, a number of the second resource elements being the number greater than two; and
a transmitter that transmits the first DMRS or the second DMRS.