Method and apparatus for transmitting and receiving control information in wireless communication system

Patent metadata

Field	Value
Publication number	US-12301353-B2
Application number	US-202318469150-A
Country	US
Kind code	B2
Filing date	Sep 18, 2023
Priority date	Jun 4, 2012
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

Methods, a Base Station (BS), and a User Equipment (UE) in a wireless communication system for transmitting and receiving control information are provided. The method for transmitting control information by a BS in a wireless communication system includes receiving information related to a signal transmitted by a second BS that the second BS which is a neighboring BS of the first BS, determining whether a second UE using an identical resource to that used by a first UE included in a cell of the first BS exists within a cell of the second BS based on the received information, when the second UE exists, generating control information for controlling a signal transmitted to the second UE by the second BS based on the received information, and transmitting the generated control information to the first UE through a control channel.

First claim

What is claimed is:

1. A method performed by a user equipment (UE) for receiving control information in a wireless communication system supporting communication via a backhaul link between a first base station (BS) and a second BS, the method comprising:
receiving, by the UE from the first BS, control information for cancelling an interference caused to the UE by a downlink transmission of the second BS which is a neighboring BS of the first BS, the control information comprising a cell identifier of the second BS and transmission mode information including a multiple input multiple output (MIMO) used for a physical downlink shared channel (PDSCH) transmission of the second BS; and
cancelling, by the UE, based on the received control information, the interference caused to the UE by the PDSCH transmission by the second BS.

2. The method of claim 1 , wherein the control information further comprises information on a modulation and coding scheme (MCS) used for the PDSCH transmission of the second BS.

3. The method of claim 1 , wherein the control information further comprises information associated with a transport block for the PDSCH transmission of the second BS.

4. A user equipment (UE) for receiving control information in a wireless communication system supporting communication via a backhaul link between a first base station (BS) and a second BS, the UE comprising:
a receiver; and
a controller configured to:
receive, via the receiver from the first BS, control information for cancelling an interference caused to the UE by a downlink transmission of the second BS which is a neighboring BS of the first BS, the control information comprising a cell identifier of the second BS and transmission mode information including a multiple input multiple output (MIMO) used for a physical downlink shared channel (PDSCH) transmission of the second BS, and
cancel, based on the received control information, the interference caused to the UE by the downlink-PDSCH transmission by the second BS.

5. The UE of claim 4 , wherein the control information further comprises information on a modulation and coding scheme (MCS) used for the PDSCH transmission of the second BS.

6. The UE of claim 4 , wherein the control information further comprises information associated with a transport block for the PDSCH transmission of the second BS.

7. A method performed by a first base station (BS) for transmitting control information in a wireless communication system supporting communication via a backhaul link between the first BS and a second BS, the method comprising:
receiving, by the first BS from the second BS, information related to a downlink transmission of the second BS;
generating, by the first BS, based on the received information, control information for cancelling an interference caused to a user equipment (UE) by the downlink transmission of the second BS which is a neighboring BS of the first BS, the control information comprising a cell identifier of the second BS and transmission mode information including a multiple input multiple output (MIMO) used for a physical downlink shared channel (PDSCH) transmission of the second BS; and
transmitting, to the UE served by the first BS, the control information.

8. The method of claim 7 , wherein the control information further comprises information on a modulation and coding scheme (MCS) used for the PDSCH transmission of the second BS.

9. The method of claim 7 , wherein the control information further comprises information associated with a transport block for the PDSCH transmission of the second BS.

10. A first base station (BS) for transmitting control information in a wireless communication system supporting communication via a backhaul link between the first BS and a second BS, the first BS comprising:
a transmitter; and
a controller configured to:
receive, from the second BS, information related to a downlink transmission of the second BS,
generate, based on the received information, control information for cancelling an interference caused to a user equipment (UE) by the downlink transmission of the second BS which is a neighboring BS of the first BS, the control information comprising a cell identifier of the second BS and transmission mode information including a multiple input multiple output (MIMO) used for a physical downlink shared channel (PDSCH) transmission of the second BS, and
transmit, to the UE served by the first BS, the control information.

11. The first BS of claim 10 , wherein the control information further comprises information on a modulation and coding scheme (MCS) used for the PDSCH transmission of the second BS.

12. The first BS of claim 10 , wherein the control information further comprises information associated with a transport block for the PDSCH transmission of the second BS.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Han-Ju
• Lim Chae-Man
• Kim Min-Goo
• Lim Jong-Han
• Kwon Hyuk-Joon
• Lee Jung-Won

Classifications

• H04L25/03305

  Joint sequence estimation and interference removal (joint detection of several desired signals H04L25/03331) · CPC title

• H04L1/1825

  Adaptation of specific ARQ protocol parameters according to transmission conditions · CPC title

• H04W92/20

  between access points · CPC title

• H04J11/005

  of intercell interference · CPC title

• H04L1/0047 Primary

  Decoding adapted to other signal detection operation (in conjunction with sequence estimation or equalization H04L25/03286) · CPC title