Method and apparatus for receiving or transmitting downlink control signal in wireless communication system

A wireless communication system and downlink technology, applied in the field of wireless communication systems, can solve the problem of reducing the transmission area and achieve the effect of efficient reception

Active Publication Date: 2015-06-24
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since a multi-node system transmits signals using dispersed nodes, the transmission area cover

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  • Method and apparatus for receiving or transmitting downlink control signal in wireless communication system
  • Method and apparatus for receiving or transmitting downlink control signal in wireless communication system
  • Method and apparatus for receiving or transmitting downlink control signal in wireless communication system

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Embodiment Construction

[0042] Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. The drawings illustrate exemplary embodiments of the invention and provide a more detailed description of the invention. However, the scope of the present invention should not be limited thereto.

[0043] In some cases, in order to prevent obscuring the concept of the present invention, structures and devices of known art will be omitted, or main functions based on the respective structures and devices will be shown in the form of a block diagram. And, wherever possible, the same reference numerals will be used throughout the drawings and the specification to refer to the same or like parts.

[0044] In the present invention, User Equipment (UE) is fixed or mobile. A UE is a device that transmits and receives user data and / or control information by communicating with a base station (BS). The term "UE" may be used with "te...

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Abstract

The method for receiving a downlink signal by a user device in a wireless communication system according to one embodiment of the present invention comprises: a step of receiving control information relating to semi persistent scheduling via an upper layer signaling or a downlink control channel; and a step of decoding a semi persistent scheduled downlink data channel based on the control information relating to semi persistent scheduling. The method may comprise: a step of using, if the downlink control information received via the downlink control channel has a first downlink control information (DCI) format, a predetermined first parameter group from among the candidate parameter groups received via the upper layer signaling so as to decode the downlink data channel; and a step of using, if the downlink control information received via the downlink control channel has a second DCI format, a second parameter group indicated by the downlink control information from among the candidate parameter groups received via the upper layer signaling so as to decode the downlink data channel.

Description

technical field [0001] The present invention relates to a wireless communication system, and more particularly to a method and device for receiving or transmitting a downlink control signal in a wireless communication system. 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 appeared and come into widespread use. 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 more frequency bands, cognitive radio technology, multiple antenna (MIMO) technology for increasing data capacity at a limited frequency, Multi-base station cooperation technology has attracted much attention. Additionally, communication environments have evolved such that the density of accessible nodes...

Claims

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Application Information

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IPC IPC(8): H04J11/00H04W72/12
CPCH04L5/0053H04J11/00H04W72/23H04W72/0446
Inventor 李智贤李承旻金学成徐翰瞥金奉会
Owner LG ELECTRONICS INC
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