Apparatus and method for transmitting data in wireless communicatin system

Patent metadata

Field	Value
Publication number	US-2018048513-A1
Application number	US-201715675631-A
Country	US
Kind code	A1
Filing date	Aug 11, 2017
Priority date	Aug 12, 2016
Publication date	Feb 15, 2018
Grant date	—

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, to a first terminal, a frequency-quadrature amplitude modulation (FQAM) symbol through a plurality of resource units that comprises an active resource unit and at least one inactive resource unit; and transmitting, to a second terminal, at least one modulation symbol through the at least one inactive resource unit.

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 modulation 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:
allocating a first transmission power for the FQAM symbol; and allocating a second transmission power for the modulation symbol, 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 FQAM symbol or the modulation symbol in order to eliminate the modulation 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, to a first terminal, a frequency-quadrature amplitude modulation (FQAM) symbol through a plurality of resource units that comprises an active resource unit and at least one inactive resource unit; and
transmit, to a second terminal, at least one modulation symbol through the at least one inactive resource unit.

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 modulation 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 at least one processor is configured to:
allocate a first transmission power for the FQAM symbol; and allocate a second transmission power for the modulation symbol, 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 FQAM symbol or the modulation symbol in order to eliminate the modulation 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

• H04L27/2003

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

• H04B1/707

  using direct sequence modulation · 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

• H04L27/02

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

• H04L27/2082

  for offset or staggered quadrature phase shift keying · CPC title