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Control channel information transmission method

A technology for controlling channel information and channel information, which is applied in the field of control channel information transmission, and can solve the problems of increasing the number of variable parameters, increasing the number of bits of control channel information, and increasing the number of control channel information

Active Publication Date: 2014-07-02
FUJITSU LTD
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  • Description
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Problems solved by technology

[0018] Thus, as shown in Figure 6 As shown in Figure 6, in period III of propagation environment I where MIMO is applied, there are the following problems: variable parameters The number of 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 termina...

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Abstract

There is a problem that if MIMO is applied for transmission, the number of variable parameters increases, thereby increasing the number of information bits required for the control channel (FIG. 6, III). There is also a problem that if the number of simultaneous multiplexed users is increased in a single frame, the control channel information is increased in proportion to the number of users. In order to solve these problems, an error correction coding process is performed on the control channel information using an adaptive modulation coding scheme; then the error correction coded control channel information is modulated by using a predetermined coding scheme, and then the control channel information is transmitted; and further set as This makes it possible to change the encoding rate in the error correction encoding process according to the propagation 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. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L27/00H04B7/04H04W88/02
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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