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Method and device for determining bit size of rank indicator in wireless communication system

A technology of wireless communication system and rank indicator, applied in radio transmission system, diversity/multi-antenna system, transmission system, etc.

Active Publication Date: 2021-03-12
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Although the downlink receiving end can obtain precoded channel information about the extended antenna configuration through DRS, it is necessary for the downlink receiving end to have a separate reference signal in addition to DRS to obtain channel information that is not precoded

Method used

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  • Method and device for determining bit size of rank indicator in wireless communication system
  • Method and device for determining bit size of rank indicator in wireless communication system
  • Method and device for determining bit size of rank indicator in wireless communication system

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specific Embodiment approach

[0034] Embodiments described hereinafter correspond to combinations of elements and features of the present invention in prescribed forms. And, unless they are explicitly mentioned, the corresponding elements or features may be regarded as optional. Each of the elements or features may be implemented in a form uncombined with other elements or features. In addition, the embodiments of the present invention can be realized by partially combining elements and / or features together. The order of operations explained for each embodiment of the present invention can be modified. Certain configurations or features of one embodiment can be included in another embodiment, or can be replaced with corresponding configurations or features of another embodiment.

[0035] In this specification, the embodiments of the present invention focus on the data transmission / reception relationship between the user equipment and the eNodeB for description. In this case, the eNodeB may correspond to...

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Abstract

A method for reporting a rank indicator to a base station by a terminal thereof in a wireless access system is disclosed in this application. The rank indicator reporting method includes the steps of: setting a plurality of channel state information-reference signal (CSI-RS) resources for a CSI process by an upper layer; selecting one of the plurality of CSI-RS resources; An indicator of selected one CSI-RS resource and a rank indicator, wherein the bit size of the rank indicator is determined based on the maximum number of resources for multiple CSI-RS.

Description

technical field [0001] The present invention relates to a wireless communication system, and in particular, to a method and device for determining the bit size of a rank indicator in the wireless communication system. Background technique [0002] MIMO (Multiple Input Multiple Output) technology corresponds to a technology for increasing data transmission and reception efficiency using multiple transmission antennas and multiple reception antennas instead of using a single transmission antenna and a single reception antenna. If a single antenna is used, the receiving end receives data through a single antenna path. On the contrary, if multiple antennas are used, the receiving end receives data through several paths, thereby enhancing transmission speed and transmission capacity and increasing coverage. [0003] Single-cell MIMO operation can be divided into a single-user MIMO (SU-MIMO) scheme in which a single user equipment (UE) receives a downlink signal in a single cell,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04B7/0413H04L27/26
CPCH04B7/04H04B7/06H04B7/063H04B7/0413H04B7/0626H04B7/0456H04B7/0639H04L5/0048
Inventor 金亨泰
Owner LG ELECTRONICS INC