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Wireless channel control method, transmission device and receiving device

A wireless channel and sending device technology, which is applied in wireless communication, channel coding adjustment, transmission control/equalization, etc., and can solve the problem that the sending parameters cannot be changed

Inactive Publication Date: 2008-10-08
FUJITSU CONNECTED TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0021] However, in the conventional method of changing transmission parameters described above, it takes time for the block error rate derivation unit 612 in the mobile station 600 to derive the block error rate.
Therefore, the base station 500 cannot quickly change the transmission parameters according to the change of the transmission environment of the downlink radio channel.

Method used

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  • Wireless channel control method, transmission device and receiving device
  • Wireless channel control method, transmission device and receiving device
  • Wireless channel control method, transmission device and receiving device

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Embodiment Construction

[0040] Embodiments of the present invention will be described below with reference to the accompanying drawings.

[0041] FIG. 2 is a diagram showing a configuration example of a mobile communication system according to the first embodiment. The mobile communication system shown in the figure includes a base station 100 as a transmitting device and a mobile station 200 as a receiving device. In this mobile communication system, the transmission parameters of the radio channel are appropriately changed in response to changes in the transmission environment of the radio channel (downlink radio channel) from the base station 100 to the mobile station 200 . In addition, hereinafter, a coding rate and a modulation method are used as transmission parameters.

[0042] The base station 100 includes an encoder 102 , a modulation unit 104 , a transmission unit 106 , a circulator 108 , an antenna 110 , a reception unit 112 , a demodulation unit 114 , a decoder 116 , and a transmission p...

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Abstract

The present invention provides a control method of the wireless channel, a transmitting device and a receiving device thereof. The control method of the wireless channel is used for controlling the wireless channel which is in the direction from the transmitting device to the receiving device in the mobile communication system, and is characterized in that the specific receiving signal from the transmitting device is measured in the receiving device. Through the measurement, a regulating signal for increasing the transmission power of the signal transmitted in the wireless channel which is from the transmitting device to the receiving device and a regulating signal for altering other transmission parameters of the signal that is transmitted by the same wireless channel are generated. The regulating signals are transmitted from the receiving device to the transmitting device.

Description

[0001] This application is based on Article 42 of the Implementation Rules of the Chinese Patent Law. The international application date is February 20, 2003, the international application number is PCT / JP2003 / 001881, the national application number is 03819354.X, and the invention name is "Wireless Channel Control A divisional application of the Chinese patent application "method and receiving device". technical field [0002] The present invention relates to a radio channel control method for controlling a radio channel from a transmitter to a receiver in a mobile communication system having a transmitter and a receiver, and a transmitter and receiver using the radio channel control method. Background technique [0003] In wireless communication, especially in mobile communication, the transmission environment of wireless channels set between communication devices that transmit and receive information tends to change. In order to ensure smooth information transmission usin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/005H04L1/00H04B7/26H04J13/00H04L1/20
CPCH04W52/241H04L1/0021H04L1/0003H04W52/228H04L1/0009H04L1/0025H04W52/12H04W52/221H04L1/20
Inventor 古川秀人伊达木隆
Owner FUJITSU CONNECTED TECH LTD