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Communication method

A communication method and technology for channel information, applied in the field of control channel information transmission, can solve the problems of increasing the number of bits of control channel information, increasing the number of variable parameters, increasing control channel information, etc.

Active Publication Date: 2013-01-16
FUJITSU LTD
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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

Method used

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Embodiment Construction

[0043] Hereinafter, embodiments of the present invention are described with reference to the drawings.

[0044] Figure 7 A structural block diagram of a transmission system including a base station 1 and a user terminal 2 to which the present invention is applied is shown. Specifically, the present invention is characterized by the structure of the embodiment of the control channel generation unit 12 .

[0045] Regarding the downlink control channel transmission from the base station 1 to the user terminal 2, the characteristics of the present invention are described using the embodiment of the previous application to which MIMO is applied. However, the application of the present invention is not limited to Figure 7 The structure of the delivery system shown in .

[0046] Format selection / designation section 10 in base station 1 selects a control channel format based on information including the number of multiplexing users, transmission / reception functions of user terminal...

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Abstract

Disclosed is a communication method. 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, filing date: September 30, 2005, invention name: control channel information transmission method and base station and terminal using this method) divisional application. technical field [0002] The present invention relates to a control channel information transmission method and a base station and a terminal using the method, more specifically, to a control channel information transmission method for packet communication that uses a control channel to adaptively control communication parameters, and uses A base station and a terminal of the method. Background technique [0003] In third generation mobile communication systems, 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. [...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/06
Inventor 大渕一央古川秀人川端和生田岛喜晴河崎义博
Owner FUJITSU LTD
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