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Method for interference cancellation in wireless communication system and apparatus therefor

A wireless communication system and interference cancellation technology, applied in the field of wireless communication systems, can solve the problems of reducing the transmission range and the like

Active Publication Date: 2016-02-03
LG ELECTRONICS INC
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  • Abstract
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  • Claims
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Problems solved by technology

However, since a multi-node system transmits signals using scattered nodes, the transmission range covered by each antenna is reduced compared to the antennas included in a conventional concentrated antenna system

Method used

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  • Method for interference cancellation in wireless communication system and apparatus therefor
  • Method for interference cancellation in wireless communication system and apparatus therefor
  • Method for interference cancellation in wireless communication system and apparatus therefor

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[0111] First, in Figure 5 In the case of single-cell MU-MIMO in (c), since one eNB performs scheduling, coordination between eNBs is unnecessary. Since both the desired signal (i.e., the signal scheduled to the UE) and the interfering signal are transmitted from a single eNB, if both signals are based on DM-RS, then the seed value of the DM-RS sequence of the signal is obtained from a single eNB gather selected in . Therefore, when the UE knows nSCID={0,1} used for the interference signal, a DM-RS sequence can be generated, and the channel value of the interference signal can be estimated using the generated DM-RS sequence. In addition, in addition to the desired signal rank, the eNB must also signal all the ranks of the scheduled PDSCH in the corresponding subframe to indicate the DM-RS density used for the scheduled PDSCH transmission PRB. In addition, in addition to the rank used by each nSCID in the corresponding subframe (or the number of scheduled layers) and inform...

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Abstract

Provided herein is a method for interference cancellation for a UE having interference cancellation capability in a wireless communication system, the method comprising: receiving information on a reference signal transmitted from an interfering cell having the possibility of causing inter-cell interference; and attempting to detect the reference signal using the received information on the reference signal, wherein the information on the reference signal is received when the interfering cell and a serving cell of the UE have the same cyclic prefix (CP) length and are synchronized with each other.

Description

technical field [0001] The present invention relates to a wireless communication system, and in particular, to a method of receiving a downlink control signal in a wireless communication system and an apparatus therefor. Background technique [0002] Recently, various devices requiring machine-to-machine (M2M) communication and high data transfer rates, such as smart phones or tablet personal computers (PCs), have emerged and are widely used. This rapidly increases the amount of data that needs to be processed in the cellular network. In order to meet such rapidly increasing data throughput, recently, carrier aggregation (CA) technology that effectively uses a wider frequency band range, cognitive radio technology, multi-antenna (MIMO) for increasing data capacity in limited frequencies technology, multi-base station cooperation technology, etc. have been significantly emerged. In addition, the communication environment has evolved such that the density of accessible nodes...

Claims

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Application Information

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IPC IPC(8): H04J11/00H04B7/26
CPCH04J11/0053H04L5/0023H04L27/261H04W72/541H04W72/30H04L5/0048H04L5/0073H04W72/0446H04W88/02
Inventor 金沂濬朴钟贤李贤镐金亨泰
Owner LG ELECTRONICS INC
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