Information transmitting method for adaptive coding and modulation

Abstract

Disclosed is an information transmitting method for adaptive coding and modulation. In the prior art, in transmission by MIMO (multiple input multiple output), the number of variable parameters is increased, and thereby the number of information bits required by a control channel is increased; and if the number of multiplexing users is increased in a single frame, information of the control channel is increased proportionally as increase of the user number. In order to solve the above problems, the information of the control channel is subjected to error correction coding processing by an adaptive modulation and coding scheme, is modulated by a preset coding scheme after being subjected to error correction coding and is then transmitted. Further, coding rate in error correction coding processing can be changed according to the broadcast state.

Description

[0001] This application is an invention patent application with the original application number 200580051722.9 (International Application Number: PCT / JP2005 / 018117, Application Date: September 30, 2005, Title of Invention: Control Channel Information Transmission Method and Base Stations and Terminals Using the Method) Divisional application. Technical field [0002] The present invention relates to a control channel information transmission method and a base station and terminal using the method, and more specifically, to a control channel information transmission method for packet communication that uses a control channel to adaptively control communication parameters, and The base station and terminal of the method. Background technique [0003] In the third-generation mobile communication system, adaptive radio links such as adaptive modulation / demodulation, HARQ (Hybrid Automatic Repeat Request) and scheduling are used to increase the transmission efficiency of data packets. ...

AI Technical Summary

Problems solved by technology

[0018] Thus, as shown in the relationship between MIMO application and control channel information volume Image 6 As shown in , in period III of propagation environment I to which MIMO is applied, there is a problem that the number of variable parameters increases and the number of information bits required for the control channel increases

Furthermore, when the number of simultaneously multiplexed users in a single frame increases, there is a problem that the control channel information also increases in proportion to the number of users

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