Adaptive modulation and coding method and adaptive modulation and coding device

Abstract

An adaptive modulation and coding method is provided by this invention. The method includes the following steps: initializing a Channel Quality Indicator (CQI) parameter corresponding to a CQI reported by a terminal according to the CQI reported by the terminal; updating the CQI parameter corresponding to an acknowledgement (ACK) / not acknowledgement (NACK) according to the ACK / NACK reported by the terminal; determining the final Modulation and Coding Scheme (MCS) according to the CQI reported by the terminal and the updated CQI parameter. An adaptive modulation and coding apparatus is also provided by this invention. A MCS amending module in the apparatus is used for determining the final MCS according to the CQI reported by the terminal and the updated CQI parameter. With the method and the apparatus of this invention, the problems including irrationality of MCS selection, inferiority of the terminal throughput performance and badness of the Block Error Ratio (BLER) target in prior art due to the difference of the terminals capability degree, the difference of channel types and / or irrational method of adaptive modulation coding are resolved.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to an adaptive modulation and encoding method and device. Background technique [0002] In related technologies, Long Term Evolution (LTE for short) is a third generation partnership project (3 rd Generation Partnership Project (referred to as 3GPP) under the trend of mobile communication broadband, in order to counter the market challenges of mobile broadband wireless access technologies such as global microwave interconnection access (World interoperability for Microwave Access, referred to as WiMAX), in the ultra-three generation mobile Communication system (Beyond Third Generation in mobile communication system, referred to as B3G) technology based on quasi-fourth generation mobile communication technology (Fourth Generation, referred to as 4G). [0003] LTE uses frequency-division multiple access (Orthogonal Frequency Division Multiplexing, referred to as OFDM) technology ...

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Problems solved by technology

[0008] The present invention provides an adaptive modulation and coding method and device to solve the problem in the prior art that MCS selection is unreasonable and terminal problems are caused by different capability levels of terminals, different channel types, and / or unreasonable adaptive modulation and coding methods. Problems with poor throughput performance and poor BLER indicators

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