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Radio equipment and transmit power controlling method for the same

A transmission power control and transmission power technology, applied in power management, gain control, wireless communication and other directions, can solve the problems of increased interference, easy disconnection, difficult to meet the transmission power accuracy, etc., to achieve wide power variable accuracy, guaranteed absolute The effect of precision

Inactive Publication Date: 2004-07-07
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, according to the above prior art wireless equipment, in a communication environment that requires a wide dynamic range and high linearity control of transmission power, when variably controlling the transmission power being output from the mobile station, while maintaining the power variable accuracy (The allowable error of the transmit power control target value) at the same time, it is difficult to guarantee the absolute accuracy of the transmit power (the allowable error of the variable range in the transmit power control), so it is sometimes difficult to meet the maximum power specified by radio laws or regulations. Transmit power accuracy when transmitting
In addition, there is a possibility that if the mobile station is close to the base station, there will be increased interference with other devices
Moreover, since the mobile station is prone to disconnection if it is too far away from the base station, various unfavorable situations may arise in actual use

Method used

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  • Radio equipment and transmit power controlling method for the same
  • Radio equipment and transmit power controlling method for the same
  • Radio equipment and transmit power controlling method for the same

Examples

Experimental program
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no. 1 example

[0038] figure 1 is a diagram showing the structure of the wireless device according to the first embodiment of the present invention, mainly the transmission power controller. The wireless device of the first embodiment is installed in, for example, a mobile communication device as a base station or a mobile station in a cellular communication system or the like, and power-amplifies signals containing transmitted information, and then transmits the signals to a communication target. In the first embodiment, the control of the transmission power of the wireless equipment in the mobile station will be described by taking the mobile station as an example. However, the present invention is not limited thereto, and can also be applied to base stations, for example.

[0039] figure 1 Among them, the wireless device of the first embodiment includes as a basic transmission system: a signal modulator 11 for modulating a transmission signal containing transmission information, a varia...

no. 2 example

[0061] Figure 7 is a diagram showing the configuration of a wireless device according to a second embodiment of the present invention, mainly a transmission power controller. Fig. 8 is a diagram showing the structure of a feedback amount generator in a second embodiment of the present invention.

[0062] In the second embodiment, an example is given in which the structure of the feedback amount generator is changed. The structure and operation of other parts are similar to those in the first embodiment. Therefore, only the differences will be described here, and the same constituent elements will be given the same reference numerals, and their descriptions will be omitted.

[0063] The feedback amount generator 30 of the second embodiment is constituted so as to switch the operation for generating the feedback amount H2 in response to the transmission power designation information A2 supplied from the transmission power designator 16 . In the second embodiment, the operati...

no. 3 example

[0076] In the third to fifth embodiments described later, an example in which the structure of the loop gain setting section is changed is given below.

[0077] Figure 11 is a diagram showing the configuration of a wireless device according to a third embodiment of the present invention, mainly a transmission power controller. In the third embodiment, a loop gain variable setting section 50 that changes the loop gain in response to the output of the error detector 20 is provided. The structure and operation of other parts are similar to those of the first embodiment, so only the differences will be described here, and the same constituent elements will be given the same reference numerals and their descriptions will be omitted.

[0078] The function of the loop gain variable setting section 50 is to change the loop gain G3 in response to the transmission power error E3 output from the error detector 20, output the loop gain G3, and hold the feedback correction as a result of...

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Abstract

The invention provides a controlling method of transmission power and recording media. The transmission power is adjusted according to the error of the difference between a detecting value obtained by detecting transmission signal based on a detecting wireless device and a detecting value of transmission signal transmitted in predetermined transmission power, and then correcting value is calculated by multiplying the error with a predetermined plus, and then controlling amount is generated based on the correcting value, and the amplification plus of the transmission power is reset based on the controlling amount and the predetermined plus can be set to restrain the variation amount of the transmission power adjusted based on the controlling amount within an allowable region.

Description

technical field [0001] The present invention relates to a wireless device such as a mobile phone used in mobile communication, a method of controlling transmission power in the wireless device, and a recording medium for recording a program for executing the method of controlling transmission power. Background technique [0002] In a commonly used mobile communication device such as a mobile phone, a function for controlling its own transmission power according to the distance between a base station and a mobile station when transmitting information is provided. In order to improve frequency use efficiency by reducing interference between communication channels, transmission power control for maintaining a fixed power capable of reaching a base station signal is important in a multiple access type communication system for multiplexing a plurality of communication channels of. [0003] Especially, in a mobile communication device of a CDMA (Code Division Multiple Access) sys...

Claims

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Application Information

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IPC IPC(8): H04W52/04H03G3/30H04B1/04H04B7/005H04B7/26H04J13/00H04W52/36
CPCH03G3/3042H04W52/52
Inventor 小原敏男
Owner PANASONIC CORP
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