Method for ue cancelling interference from neighbouring cells in wireless communication system and apparatus therefor

Patent metadata

Field	Value
Publication number	US-2016157108-A1
Application number	US-201414906802-A
Country	US
Kind code	A1
Filing date	Dec 11, 2014
Priority date	Dec 24, 2013
Publication date	Jun 2, 2016
Grant date	—

Abstract

In this application, a method for a terminal cancelling interference from a neighboring cell is disclosed. More specifically, the method comprises the steps of: receiving one or more interference cancellation assistance information indicating one of a plurality of parameter combinations for detecting an interference signal from the neighboring cell; detecting an interference signal from the neighboring cell, based on the one or more interference cancellation assistance information and cancelling the interference signal in signals received from a serving cell, wherein the interference signal is a downlink data channel of the neighboring cell or a downlink control channel of the neighboring cell, and the plurality of parameter combinations is configured through a higher layer.

First claim

1 . A method for cancelling, by a UE, interference from a neighbor cell in a wireless communication system, the method comprising:
receiving one or more interference cancellation assistance information indicating one of a plurality of parameter combinations for detecting an interference signal from the neighbor cell; detecting an interference signal from the neighbor cell, based on the one or more interference cancellation assistance information; and cancelling the interference signal from signals received from a serving cell, wherein the interference signal is a downlink data channel of the neighbor cell or a downlink control channel of the neighbor cell, and wherein the plurality of parameter combinations is configured through a higher layer.

2 . The method according to claim 1 , wherein the parameter combinations include at least one of information about a modulation order of the interference signal, information about a reference signal for demodulating the interference signal and information about a symbol index at which the interference signal starts in a subframe.

3 . The method according to claim 1 , wherein the one or more interference cancellation assistance information is broadcast through a downlink control channel from the neighbor cell.

4 . The method according to claim 1 , wherein the downlink data channel of the neighbor cell and the downlink control channel of the neighbor cell are detected through the same region of a subframe.

5 . The method according to claim 1 , wherein the one or more interference cancellation assistance information respectively correspond to different subbands.

6 . A UE in a wireless communication system, comprising:
a wireless communication module transmits and receives a signal with a network; and a processor configured to control the signal, wherein the processor is further configured to: control the wireless communication module to receive one or more interference cancellation assistance information indicating one of a plurality of parameter combinations for detecting an interference signal from the neighbor cell, detect an interference signal from the neighbor cell, based on the one or more interference cancellation assistance information, and cancel the interference signal from signals received from a serving cell, wherein the interference signal is a downlink data channel of the neighbor cell or a downlink control channel of the neighbor cell, and wherein the plurality of parameter combinations is configured through a higher layer.

7 . The UE according to claim 6 , wherein the parameter combinations include at least one of information about a modulation order of the interference signal, information about a reference signal for demodulating the interference signal and information about a symbol index at which the interference signal starts in a subframe.

8 . The UE according to claim 6 , wherein the one or more interference cancellation assistance information is broadcast through a downlink control channel from the neighbor cell.

9 . The UE according to claim 6 , wherein the downlink data channel of the neighbor cell and the downlink control channel of the neighbor cell are detected through the same region of a subframe.

10 . The UE according to claim 6 , wherein the one or more interference cancellation assistance information respectively correspond to different subbands.

Assignees

• Lg Electronics Inc

Inventors

• Park Jonghyun
• Kim Kijun
• Kim Hyungtae
• Seo Inkwon
• Lee Seungmin
• Kim Youngtae
• Yum Kunil

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

• H04W72/042

  Electricity · mapped topic

• H04W24/02 Primary

  Arrangements for optimising operational condition · CPC title

• H04W72/082

  Electricity · mapped topic