Base station device supporting data transmission based on high-order modulation and data communication method

Abstract

The invention discloses a base station device and a data communication method. The base station device comprises a receiving unit, a high-layer link unit, an information collecting unit, a scheduling unit and a sending unit, wherein the receiving unit receives channel state information comprising a CQI index from a terminal device, the high-layer link unit generates a high-layer signaling sending signal and sends the high-layer signaling sending signal to the terminal device, whether the terminal device uses a basic CQI mapping table or extension CQI mapping table is determined in the high-layer signaling sending signal, the extension CQI mapping table stipulates the correspondence relationship between the CQI index, an extension modulation mode and the code rate, and the extension modulation mode comprises a high-order modulation mode with a higher modulation order; the information collecting unit maps the CQI index to signal-interference and noise ratio information according to the specific CQI mapping table; the scheduling unit distributes channel resources of the terminal device according to the mapped signal-interference and noise ratio information and selects a modulation encoding scheme; the sending unit generates a downlink transmission signal according to the scheduling result and sends the downlink transmission signal to the terminal device.

Description

technical field [0001] The present invention relates to a method for transmitting data from a base station as a wireless communication device to a terminal, a base station device and a terminal device. In particular, it relates to a base station device and a data communication method supporting data transmission based on high-order modulation, which can perform downlink data transmission through flexible downlink signaling configuration and use an efficient modulation and coding scheme. Background technique [0002] Link adaptive technology means that the information sender obtains the current channel quality information of the channel in some way, and based on this information, selects an appropriate modulation and coding scheme (Modulation and Coding Scheme, MCS) for the receiver, and performs channel optimization for the transmitted information. The process of encoding, modulating and sending to make full use of channel capacity to achieve higher data transmission rates. ...

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Problems solved by technology

However, this document only provides the MCS table supporting 256QAM, but does not give the specific structure and method of supporting the new MCS table in the LTE system.

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