公开(公告)号：US20150365181A1

公开(公告)日：2015-12-17

申请号：US14763611

申请日：2014-01-20

Applicant: NTT DOCOMO, INC.

Inventor： Satoshi Nagata ,  Qin Mu ,  Liu Liu ,  Yu Jiang ,  Lan Chen

IPC: H04B17/309 ,  H04L1/00 ,  H04L27/34 ,  H04W72/04

CPC classification number: H04B17/309 ,  H04L1/00 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/1812 ,  H04L27/34 ,  H04W72/0413

Abstract: The present invention is designed to make possible adaptive modulation and coding (AMC) that supports high-order modulation schemes. The adaptive modulation and coding method of the present invention is an adaptive modulation and coding method for a downlink shared channel, and includes, in a user terminal, the steps of measuring channel quality based on a reference signal from the radio base station, acquiring a channel quality indicator to indicate the modulation scheme and the coding rate that are applicable to the downlink shared channel in the channel quality, from a table in which channel quality indicators, modulation schemes and coding rates are associated with each other, and transmitting the channel quality indicator to the radio base station, and the modulation schemes include a modulation scheme of a higher order than 64 QAM.

Abstract translation: 本发明被设计成能够实现支持高阶调制方案的自适应调制和编码（AMC）。 本发明的自适应调制编码方法是用于下行链路共享信道的自适应调制编码方法，在用户终端中包括基于来自无线基站的基准信号测量信道质量的步骤，获取 信道质量指示符，从信道质量指示符，调制方式和编码率彼此相关联的表中指示适用于信道质量中的下行链路共享信道的调制方案和编码率，以及发送信道质量 指示符到无线电基站，并且调制方案包括比64QAM高的调制方案。