EP 3878127 A4 20220810 - DM-RS SEQUENCE INDICATION FOR UPLINK COMMUNICATION
Title (en)
DM-RS SEQUENCE INDICATION FOR UPLINK COMMUNICATION
Title (de)
DM-RS SEQUENZANZEIGE FÜR UPLINK-KOMMUNIKATION
Title (fr)
INDICATION DE SÉQUENCE DE DM-RS POUR UNE COMMUNICATION EN LIAISON MONTANTE
Publication
Application
Priority
- US 201862757626 P 20181108
- US 2019060240 W 20191107
Abstract (en)
[origin: WO2020097312A1] Systems, methods, and apparatus are provided for enabling a user equipment device (UE) to determine a demodulation reference signal (DM-RS) sequence based on signaling from a base station. In one example, an apparatus for a UE includes baseband circuitry having a radio frequency (RF) interface configured to transmit and receive RF signals, and one or more processors. The one or more processors are configured to determine, based on signaling from a base station, a demodulation reference signal (DM-RS) sequence, wherein the DM-RS sequence comprises a sequence of binary values; modulate the determined DM-RS sequence using π/2 binary phase-shift keying (BPSK) to generate a π/2 BPSK modulated DM-RS signal in the pre-discrete Fourier transform (DFT) time domain; and transmit an uplink signal to the base station using one or multiple symbols of an orthogonal frequency division multiplexing (OFDM) waveform that includes the π/2 BPSK modulated DM-RS signal.
IPC 8 full level
H04L 5/00 (2006.01); H04L 27/20 (2006.01); H04L 27/26 (2006.01)
CPC (source: EP US)
H04L 27/20 (2013.01 - EP); H04L 27/261 (2013.01 - EP US); H04L 27/2636 (2013.01 - EP US)
Citation (search report)
- [I] US 2017201989 A1 20170713 - FAKOORIAN SEYED ALI AKBAR [US], et al
- [I] WO 2018134850 A1 20180726 - WISIG NETWORKS PRIVATE LTD [IN]
- [XI] QUALCOMM INCORPORATED: "Lower PAPR reference signals", 3 November 2018 (2018-11-03), pages 1 - 24, XP051479767, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg%5Fran/WG1%5FRL1/TSGR1%5F95/Docs/R1%2D1813445%2Ezip>
- [XI] INTEL CORPORATION: "Low PAPR Reference Signals", vol. RAN WG1, no. Spokane, USA; 20181112 - 20181116, 3 November 2018 (2018-11-03), XP051478739, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg%5Fran/WG1%5FRL1/TSGR1%5F95/Docs/R1%2D1812510%2Ezip> [retrieved on 20181103]
- See references of WO 2020097312A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2020097312 A1 20200514; EP 3878127 A1 20210915; EP 3878127 A4 20220810
DOCDB simple family (application)
US 2019060240 W 20191107; EP 19882556 A 20191107