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Method and device for selecting modulation and coding scheme

A modulation and coding mode and a coding mode technology, which are applied in the field of modulation and coding mode selection methods and devices, can solve problems such as being unsuitable for channel conditions, and achieve the effect of overcoming influences

Active Publication Date: 2014-08-13
SANECHIPS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, under the current technical conditions, the MCS fed back by the receiver is not suitable for the channel conditions when the transmitter transmits

Method used

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  • Method and device for selecting modulation and coding scheme
  • Method and device for selecting modulation and coding scheme
  • Method and device for selecting modulation and coding scheme

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Embodiment Construction

[0050] In the modulation and coding method selection method provided by the embodiment of the present invention, in order to enable the base station to use the MCS suitable for the channel conditions during transmission to transmit data, when the receiver selects the MCS, a certain estimation is performed to offset the change of the channel condition to the dynamic MCS selection mechanism the adverse effects brought about. Specifically, the receiver can use the interference and noise power of the measurement subframe to dynamically adjust the range of the average carrier to interference and noise ratio (CINR: Carrier to Interference plus Noise Ratio) in the reference MCS parameters, and then use the measurement subframe to schedule The average interference and noise power in the period is calculated to obtain the average CINR in the predetermined period, and the corresponding MCS is selected by comparing the adjusted average CINR range. In this way, the influence of channel co...

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Abstract

The disclosure provides a method and an apparatus for selecting a modulation and coding scheme (MCS). According to the interference plus noise power of a measuring sub-frame, a receiver adjusts the range of an average Carrier to Interference Plus Noise Ratio (CINR) in a reference MCS parameter; according to the average interference plus noise power of the measuring sub-frame in a predetermined period, the receiver calculates and obtains the average CINR in the predetermined period; based on the calculated and obtained average CINR in the predetermined period, the receiver determines MCS information by comparing the adjusted range of the average CINR. Thus the influence of the channel condition changes on the dynamic MCS selection is eliminated.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for selecting a modulation and coding mode. Background technique [0002] A typical wireless communication channel changes randomly, and has the characteristics of frequency selectivity and time variation. In the design of a wireless communication system, this random variation of the wireless channel needs to be taken into account. And a more superior design can use this randomness to improve the performance and capacity of the system. One of the important ideas is to change the transmission rate by dynamically adjusting the Modulation and Coding Scheme (MCS: Modulation and Coding Scheme) according to the instant quality of the channel. And the dynamic selection technology of MCS is the key technology of 3G, 4G and even future broadband wireless communication. This technology has been widely used in 3G and 4G broadband wireless communication fields s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04B17/00H04W28/04
CPCH04L1/0016H04L1/0003H04L1/20H04L1/0019H04L1/0009H04B1/1027H04L1/0025
Inventor 任天民
Owner SANECHIPS TECH CO LTD