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

Patent metadata

Field	Value
Publication number	US-2023013162-A1
Application number	US-202217948651-A
Country	US
Kind code	A1
Filing date	Sep 20, 2022
Priority date	Jun 4, 2012
Publication date	Jan 19, 2023
Grant date	—

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 for receiving control information by a user equipment (UE) 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, 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 including information associated with a transport block size for a multiple input multiple output (MIMO) transmission of the second BS; and cancelling, based on the received control information, the interference caused to the UE by the downlink transmission by the second BS.

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

3 . 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 including information associated with a transport block size for a multiple input multiple output (MIMO) transmission of the second BS, and
cancel, based on the received control information, the interference caused to the UE by the downlink transmission by the second BS.

4 . The UE of claim 3 , wherein the control information comprises information on a modulation and coding scheme (MCS) used for the downlink transmission of the second BS.

5 . A method for transmitting control information by a first base station (BS) in a wireless communication system supporting communication via a backhaul link between the first BS and a second BS, the method comprising:
receiving, from the second BS, information related to a downlink transmission of the second BS; generating, 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 including information associated with a transport block size for a multiple input multiple output (MIMO) transmission of the second BS; and transmitting, to the UE served by the first BS, the generated control information including the information associated with the transport block size for the MIMO transmission of the second BS.

6 . The method of claim 5 , wherein the control information comprises information on a modulation and coding scheme (MCS) used for the downlink transmission of the second BS.

7 . 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 including information associated with a transport block size for a multiple input multiple output (MIMO) transmission of the second BS, and
transmit, to the UE served by the first BS, the generated control information including the information associated with the transport block size for the MIMO transmission of the second BS.

8 . The first BS of claim 7 , wherein the control information comprises information on a modulation and coding scheme (MCS) used for the downlink 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

• H04J11/005

  of intercell interference · CPC title

• H04L1/1825

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

• H04L1/0025 Primary

  Transmission of mode-switching indication · CPC title

• H04L1/0047 Primary

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

• H04W48/08

  Access restriction or access information delivery, e.g. discovery data delivery (signalling during connection H04W76/00) · CPC title