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Adaptive modulation and coding method and device

An adaptive modulation and coding technology, applied in the field of wireless communication, can solve the problems of power waste, too large BLER, unable to meet user QoS requirements, etc., and achieve the effect of avoiding too small or too large BLER

Inactive Publication Date: 2012-03-14
ZTE CORP
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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for adaptive modulation and coding, which can solve the problems of power waste and throughput decline caused by too small BLER in the BLER calibration statistical interval in the prior art, and the problem of excessive BLER in the BLER calibration statistical interval. Large-scale problems that cannot meet user QoS requirements
[0008] Another object of the present invention is to provide a device for adaptive modulation and coding, which can solve the problems of power waste and throughput decline caused by too small BLER in the BLER calibration statistical interval in the prior art, and the problem of BLER calibration statistical interval The problem that the user's QoS requirements cannot be met due to excessive BLER

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  • Adaptive modulation and coding method and device

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[0034] Below, refer to the attached Figure 1~3 The method and device for adaptive modulation and coding of the present invention are described in detail.

[0035] Such as figure 1 As shown, the adaptive modulation coding method of the present invention comprises the following steps:

[0036] Step 100: setting the relevant parameters of the first adjustment amount and the second adjustment amount of the MCS;

[0037] Step 200: Obtain the CINR of the service time to be sent, and perform table lookup to obtain the MCS;

[0038] Step 300: Determine the first MCS adjustment amount according to the preset allowable range and the BLER within the calibration statistical window;

[0039] Step 400: Acquiring the second MCS adjustment amount;

[0040] Step 500: Determine the final MCS of the service to be sent at the next scheduling time according to the MCS, the first adjustment amount and the second adjustment amount obtained from the table lookup.

[0041] Specifically, in step ...

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Abstract

The invention provides an adaptive modulation and coding method and an adaptive modulation and coding device. The method comprises the following steps of: acquiring a carrier interference and noise ratio (CINR) at a moment when a service is to be sent and acquiring a modulation and coding scheme (MCS) by looking up a table; acquiring a second adjusting quantity of the MCS during determination of a first adjusting quantity of the MCS; and determining a final MCS of the service sent at the next scheduling moment by acquiring the MCS as well as the first adjusting quantity and the second adjusting quantity of the MCS by looking up the table. By the method and the device, the problems of a waste of power and reduction of throughput caused by oversmall BLER and the problem that a requirement of a user on the quality of service (QoS) cannot be met caused by overlarge BLER within a BLER calibration statistical interval in the prior art can be solved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and device for adaptive modulation and coding in a wireless communication system. Background technique [0002] AMC (Adaptive Modulation and Coding, Adaptive Coding and Modulation) is a link adaptive technology, using more MCS (Modulation and Coding Scheme, modulation and coding scheme), AMC technology is set for each user terminal according to the link quality Adaptive optimal MCS can compensate the fading effect caused by the channel variation on the received signal, which can significantly increase the throughput of the system. In the AMC system, the general user terminal uses a high-order modulation method and a higher coding rate, that is, a higher MCS, when the channel quality is relatively good, and uses a lower MCS when the channel quality is poor. [0003] At present, in the high-speed data services of various wireless standards, such as ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04W28/04
CPCH04L1/0016H04L1/0019
Inventor 余秋星陈琼
Owner ZTE CORP
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