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Method and device for transmitting MCS instructing information

一种指示信息、第二指示的技术，应用在专用于发射机的装置、传输系统、调整传输速率等方向，能够解决不能支持更高阶的调制方式、限制吞吐量等问题，达到提高吞吐量、提高频谱效率的效果

Inactive Publication Date: 2014-02-12
CHINA ACAD OF TELECOMM TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0016] Embodiments of the present invention provide a method and device for transmitting MCS indication information, which are used to solve the problem that the existing LTE / LTE-A system cannot support higher-order modulation methods, thereby limiting The problem of further improvement of throughput

Method used

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  • Method and device for transmitting MCS instructing information
  • Method and device for transmitting MCS instructing information
  • Method and device for transmitting MCS instructing information

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Embodiment Construction

[0038]The method for transmitting MCS indication information in the embodiment of the present invention is used to support the introduction in the LTE / LTE-A system of an MCS table whose modulation order is greater than that specified in the existing 3GPP LTE Rel-11 and previous versions (defined in the embodiment of the present invention as The second MCS table) contains the modulation method with the largest modulation order (such as 256QAM with a modulation order of 8, etc.), and establishes an MCS table containing the corresponding records of the MCS index and TBS index corresponding to the high-order modulation method (this The embodiment of the invention is defined as the first MCS table); wherein, the first MCS table in the embodiment of the present invention can replace the original second MCS table, and can also be used in combination with the second MCS table.

[0039] The embodiments of the present invention will be further described in detail below in conjunction wit...

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Abstract

The present application relates to the field of wireless communications, and in particular, to an indication method and device for a modulation coding scheme. It is used for solving the problem that in an existing LTE / LTE-A system, a higher-order modulation scheme cannot be supported, thereby limiting the further improvement of throughput in an application scenario of a high signal-to-noise ratio. The method of the embodiments of the present application includes: according to the channel quality and a first MCS table, a network side determining an MCS grade corresponding to a channel assigned to a terminal; and by means of first indication information, notifying the terminal of the determined MCS grade, so as to indicate to the terminal to determine a modulation scheme and coding rate used by the channel assigned thereto according to the MCS grade, wherein the first MCS table at least contains corresponding records of an MCS index and a TBS index corresponding to a modulation scheme with a modulation order greater than 6. The embodiments of the present application introduce a higher-order modulation scheme into an existing LTE / LTE-A system, improving the spectrum efficiency.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and device for transmitting MCS (Modulation and Coding Scheme, modulation and coding scheme) indication information. Background technique [0002] In the Long Term Evolution (LTE) system and the Long Term Evolution-Advanced (LTE-A) system, both downlink and uplink traffic channels adopt Adaptive Modulation and Coding (AMC) technology , this technology is used to determine the modulation mode and coding rate according to the channel conditions, so as to improve the spectral efficiency of the system. The existing LTE version 8 / 9 / 10 / 11 (Release-8 / 9 / 10 / 11, Rel-8 / 9 / 10 / 11) system supports three modulation methods, namely QPSK (Quaternary Phase Shift Keying, four-phase Phase Shift Keying), 16QAM (Quadrature Amplitude Modulation, Quadrature Amplitude Modulation) and 64QAM, where the amount of information conveyed by each modulation symbol of each modulation method ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00
CPCH04L1/0016H04L1/0025H04L1/0026H04L1/0033H04L2001/0092H04L27/2601H04L1/00H04W72/23H04L1/0003
Inventor 潘学明沈祖康徐婧肖国军
Owner CHINA ACAD OF TELECOMM TECH
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