US 11,757,580 B2
User equipment, base station, and method for modifying demodulation reference signal (DMRS) sequences
Runxin Wang, Beijing (CN); Wenjia Liu, Beijing (CN); Xiaolin Hou, Beijing (CN); and Daiki Takeda, Tokyo (JP)
Assigned to NTT DOCOMO, INC., Tokyo (JP)
Appl. No. 17/280,172
Filed by NTT DOCOMO, INC., Tokyo (JP)
PCT Filed Sep. 28, 2018, PCT No. PCT/CN2018/108426
§ 371(c)(1), (2) Date Mar. 25, 2021,
PCT Pub. No. WO2020/062064, PCT Pub. Date Apr. 2, 2020.
Prior Publication US 2022/0006579 A1, Jan. 6, 2022
Int. Cl. H04L 5/00 (2006.01); H04J 13/00 (2011.01); H04L 27/26 (2006.01)
CPC H04L 5/0016 (2013.01) [H04J 13/0022 (2013.01); H04J 13/0062 (2013.01); H04L 5/0051 (2013.01); H04L 27/2607 (2013.01); H04L 27/2614 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A user equipment, comprising:
a receiving unit configured to receive multiple access signature information for the user equipment from a base station, wherein the multiple access signature information includes modification information indicating a reference signal sequence transmitted by the user equipment; and
a control unit configured to determine the reference signal sequence of the user equipment according to the received modification information,
wherein in the case the reference signal sequence is a PN sequence, the control unit determines a pseudo-random initial sequence in the PN sequence according to the received modification information, and generates the PN sequence based on the pseudo-random initial sequence, and
wherein in the case the reference signal sequence is a ZC sequence, the control unit determines a low peak-to-average power ratio sequence in the ZC sequence according to the received modification information, and generates the ZC sequence based on the low peak-to-average power ratio sequence.