Terminal device, base station apparatus, and integrated circuit

Patent metadata

Field	Value
Publication number	US-2016337067-A1
Application number	US-201515111768-A
Country	US
Kind code	A1
Filing date	Jan 8, 2015
Priority date	Jan 15, 2014
Publication date	Nov 17, 2016
Grant date	—

Abstract

A terminal device acquires a parameter indispensable in canceling or suppressing an interference signal, cancels or suppresses interference with high precision, and reduces a degradation in reception performance due to the interference. There is provided a first terminal device that communicates with a base station apparatus, including: a higher layer processing unit that determines NAICS information indicating whether or not NAICS has to be used; a reception unit that receives downlink control information which is transmitted from the base station apparatus; and a control unit that changes interpretation of the downlink control information based on a configuration that is determined by the higher layer processing unit.

First claim

1 . A first terminal device that communicates with a base station apparatus, comprising:
a higher layer processing unit that determines NAICS information indicating whether or not NAICS has to be used; a reception unit that receives downlink control information which is transmitted from the base station apparatus; and a control unit that changes interpretation of the downlink control information based on a configuration that is determined by the higher layer processing unit.

2 . The first terminal device according to claim 1 ,
wherein, in a case where a result of determining the NAICS information that is determined in the higher layer processing unit indicates that the NAICS has to be used, the control unit interprets the second parameter as a parameter relating to a second terminal device, among a first parameter for a transport block 1 and a second parameter for a transport block 2 , which are included in the downlink control information.

3 . The first terminal device according to claim 2 ,
wherein interference due to communication in the second terminal device is canceled or suppressed using the second parameter.

4 . The first terminal device according to claim 2 ,
wherein the second parameter is a parameter relating to a terminal device other than the first terminal device that communicates with the base station apparatus.

5 . The first terminal device according to claim 2 ,
wherein the second parameter is a parameter relating to a terminal device that makes a connection to a base station apparatus other than the base station apparatus.

6 . The first terminal device according to claim 2 ,
wherein the second parameter is an MCS.

7 . A base station apparatus that communicates with a first terminal device, comprising:
a higher layer processing unit that configures NAICS information indicating whether or not the first terminal device is instructed to use NAICS; a control unit that changes a parameter of downlink control information based on whether or not the NAICS information indicates that the NAICS has to be used; and a transmission unit that transmits the downlink control information.

8 . The base station apparatus according to claim 7 ,
wherein, in a case where the NAICS information indicates that the NAICS has to be used, a parameter relating to a second terminal device is configured to be in a second parameter, among a first parameter for a transport block 1 and a second parameter for a transport block 2 , which are included in the downlink control information, and the first parameter and the second parameter are transmitted to the first terminal device.

9 . An integrated circuit that is mounted into a first terminal device that communicates with a base station apparatus, comprising:
a determination unit that determines NAICS information indicating whether or not NAICS has to be used; and an interpretation unit that interprets a second parameter as a parameter relating to a second terminal device, among a first parameter for a transport block 1 and the second parameter for a transport block 2 , which are included in downlink control information, in a case where a result of determining the NAICS information indicates that the NAICS has to be used.

10 . (canceled)

Assignees

• Sharp Kk

Inventors

• YOKOMAKURA Kozue
• Yamada Ryota
• Kato Katsuya
• Tomeba Hiromichi

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/541

  using the level of interference · CPC title

• H04B7/0452

  Multi-user MIMO systems · CPC title

• H04W72/082

  Electricity · mapped topic

• H04W72/042

  Electricity · mapped topic