Apparatus and method for transmitting data in wireless communication system

Patent metadata

Field	Value
Publication number	US-10142155-B2
Application number	US-201715675631-A
Country	US
Kind code	B2
Filing date	Aug 11, 2017
Priority date	Aug 12, 2016
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

The present disclosure relates to a pre-5 th -Generation (5G) or 5G communication system to be provided for supporting higher data rates of Beyond 4 th -Generation (4G) communication system such as Long Term Evolution (LTE). A method for operating a base station in a wireless communication system includes transmitting, to a first terminal, a frequency-quadrature amplitude modulation (FQAM) symbol through a plurality resource units that comprises an active resource unit and at least one inactive resource unit. The method further comprises transmitting, to a second terminal, at least one modulation symbol through the at least one inactive resource unit.

First claim

What is claimed is:

1. A method for operating a base station in a wireless communication system, the method comprising:
transmitting, on a first resource unit, a first symbol generated based on frequency-quadrature amplitude modulation (FQAM) using a plurality of resource units that comprises the first resource unit and a second resource unit to a first terminal; and
transmitting, on the second resource unit, a second symbol generated based on a modulation scheme different from the FQAM to a second terminal.

2. The method of claim 1 , wherein the plurality of resource units comprises resources allocated in one of a frequency domain, a time domain or a spatial domain.

3. The method of claim 1 , wherein the plurality of resource units comprises one of a plurality of subcarriers, a plurality of symbols, a plurality of timeslots, or a plurality of antennas.

4. The method of claim 1 , wherein the second symbol is generated based on amplitude shift keying (ASK), phase shift keying (PSK), amplitude-phase shift keying (APSK), continuous phase modulation (CPM), frequency shift keying (FSK) or the FQAM.

5. The method of claim 1 , further comprising:
wherein the first symbol is transmitted to the first terminal with a first transmission power,
wherein the second symbol is transmitted to the second terminal with a second transmission power, and
wherein the second transmission power is smaller than the first transmission power.

6. The method of claim 5 , wherein relative levels of the first transmission power and the second transmission power are determined to allow a signal separation of signal received at the first terminal and the second terminal.

7. The method of claim 5 , wherein the second transmission power is determined based on a path loss in a channel between the base station and the first terminal.

8. The method of claim 5 , further comprising:
performing precoding on the first symbol or the second symbol in order to eliminate the second symbol at the first terminal.

9. The method of claim 1 , wherein the first terminal or the second terminal is a machine type communications (MTC) user equipment (UE).

10. A base station in a wireless communication system, the base station comprising:
a transceiver; and
at least one processor coupled to the transceiver,
wherein the transceiver is configured to:
transmit, on a first resource unit, a first symbol generated based on frequency-quadrature amplitude modulation (FQAM) using a plurality of resource units that comprises the first resource unit and a second resource unit to a first terminal; and
transmit, on the second resource unit, a second symbol generated based on a modulation scheme different from the FQAM to a second terminal.

11. The base station of claim 10 , wherein the plurality of resource units comprises resources allocated in one of a frequency domain, a time domain or a spatial domain.

12. The base station of claim 10 , wherein the plurality of resource units comprises one of a plurality of subcarriers, a plurality of symbols, a plurality of timeslots, or a plurality of antennas.

13. The base station of claim 10 , wherein the second symbol is generated based on amplitude shift keying (ASK), phase shift keying (PSK), amplitude-phase shift keying (APSK), continuous phase modulation (CPM), frequency shift keying (FSK) or the FQAM.

14. The base station of claim 10 ,
wherein the first symbol is transmitted to the first terminal with a first transmission power,
wherein the second symbol is transmitted to the second terminal with a second transmission power, and
wherein the second transmission power is smaller than the first transmission power.

15. The base station of claim 14 , wherein relative levels of the first transmission power and the second transmission power are determined to allow a signal separation of signal received at the first terminal and the second terminal.

16. The base station of claim 14 , wherein the second transmission power is determined based on a path loss in a channel between the base station and the first terminal.

17. The base station of claim 14 , wherein the at least one processor is configured to:
perform precoding on the first symbol or the second symbol in order to eliminate the second symbol at the first terminal.

18. The base station of claim 10 , wherein the first terminal or the second terminal is a machine type communications (MTC) user equipment (UE).

Assignees

• Samsung Electronics Co Ltd

Inventors

• Al-Imari Mohammed
• Mouhouche Belkacem
• Nekovee Maziar

Classifications

• H04L27/02

  Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation (H04L27/32 takes precedence) · CPC title

• H04L27/12

  Modulator circuits; Transmitter circuits · CPC title

• H04L27/2003

  for continuous phase modulation (frequency shift keying H04L27/10) · CPC title

• H04L27/362 Primary

  Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated (H04L27/366 takes precedence) · CPC title

• H04L27/2082

  for offset or staggered quadrature phase shift keying · CPC title