Base station apparatus, terminal apparatus, communication method, and integrated circuit

Patent metadata

Field	Value
Publication number	US-11489709-B2
Application number	US-201816482812-A
Country	US
Kind code	B2
Filing date	Feb 2, 2018
Priority date	Feb 2, 2017
Publication date	Nov 1, 2022
Grant date	Nov 1, 2022

Abstract

A terminal apparatus for communicating with a base station apparatus, the terminal apparatus including: a transmission unit configured to transmit a Phase-tracking reference signal (PTRS); and a higher layer processing unit configured to configure information of mapping of the PTRS. An antenna port for the PTRS is associated with an antenna port for a Demodulation reference signal (DMRS).

First claim

The invention claimed is:

1. A terminal apparatus for communicating with a base station, the terminal apparatus comprising:
receiving circuitry configured to receive:
first information indicating whether discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) is selected for a physical uplink shared channel (PUSCH), and
second information for configuring time density of a phase tracking reference signal (PTRS) for the DFT-S-OFDM;

multiplexing circuitry configured to map the PTRS to symbols of resources for the PUSCH before discrete Fourier transform (DFT) spreading based on the second information in a case that the first information indicates that the DFT-S-OFDM is selected; and
transmitting circuitry configured to transmit a PUSCH signal and the PTRS, wherein the PTRS is transmitted on a plurality of discontinuous symbols in a time domain within a physical resource block (PRB) and on only one subcarrier in a frequency domain within the PRB,
wherein a first of the discontinuous symbols is separate from a second of the discontinuous symbols by two symbols.

2. A base station for communicating with a terminal apparatus, the base station comprising:
transmitting circuitry configured to transmit:
first information indicating whether discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) is selected for a physical uplink shared channel (PUSCH), and
second information for configuring time density of a phase tracking reference signal (PTRS) for the DFT-S-OFDM; and

receiving circuitry configured to receive a PUSCH signal and the PTRS,
wherein:
the PTRS is mapped to symbols of resources for the PUSCH before discrete Fourier transform (DFT) spreading based on the second information in a case that the first information indicates that the DFT-S-OFDM is selected; and
the PTRS is received on a plurality of discontinuous symbols in a time domain within a physical resource block (PRB) and on only one subcarrier in a frequency domain within the PRB,
wherein a first of the discontinuous symbols is separate from a second of the discontinuous symbols by two symbols.

3. A method for communicating with a base station, the method comprising:
receiving first information indicating whether discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) is selected for a physical uplink shared channel (PUSCH), and second information for configuring time density of a phase tracking reference signal (PTRS) for the DFT-S-OFDM;
mapping the PTRS to symbols of resources for the PUSCH before discrete Fourier transform (DFT) spreading based on the second information in a case that the first information indicates that the DFT-S-OFDM is selected; and
transmitting a PUSCH signal and the PTRS, wherein the PTRS is transmitted on a plurality of discontinuous symbols in a time domain within a physical resource block (PRB) and on only one subcarrier in a frequency domain within the PRB,
wherein a first of the discontinuous symbols is separate from a second of the discontinuous symbols by two symbols.

4. A method for communicating with a terminal apparatus, the method comprising:
transmitting first information indicating whether discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) is selected for a physical uplink shared channel (PUSCH), and second information for configuring time density of a phase tracking reference signal (PTRS) for the DFT-S-OFDM; and
receiving a PUSCH signal and the PTRS,
wherein:
the PTRS is mapped to symbols of resources for the PUSCH before discrete Fourier transform (DFT) spreading based on the second information in a case that the first information indicates that the DFT-S-OFDM is selected; and
the PTRS is received on a plurality of discontinuous symbols in a time domain within a physical resource block (PRB) and on only one subcarrier in a frequency domain within the PRB,
wherein a first of the discontinuous symbols is separate from a second of the discontinuous symbols by two symbols.

Assignees

• Sharp Kk
• Fg innovation co ltd

Inventors

• YOKOMAKURA Kozue
• Hamaguchi Yasuhiro

Classifications

• H04L27/26025

  Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking (allocating sub-channels of the transmission path H04L5/003) · CPC title

• H04L27/26134

  Pilot insertion in the transmitter chain, e.g. pilot overlapping with data, insertion in time or frequency domain · CPC title

• H04L27/261 Primary

  Details of reference signals · CPC title

• H04L27/2613

  Structure of the reference signals · CPC title

• H04L5/0007

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title