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Method and equipment for controlling power of personal hand held phone system

A power control and hand-held phone technology, applied in the direction of transmission control/equalization, etc., can solve the problems of insufficient wireless protocol support for power control, obstacles to the realization of closed-loop power control, etc., to solve the problem of power temperature compensation, flexible and easy to adjust the step size The effect of control

Inactive Publication Date: 2010-06-16
上海乾视通信技术有限公司
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Problems solved by technology

On the other hand, the wireless protocol of the PHS system also has obvious deficiencies in supporting power control, which has brought obstacles to the realization of closed-loop power control

Method used

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  • Method and equipment for controlling power of personal hand held phone system
  • Method and equipment for controlling power of personal hand held phone system
  • Method and equipment for controlling power of personal hand held phone system

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Embodiment Construction

[0022] The present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0023] The present invention realizes downlink power control. First, according to the ambient temperature (adjustable temperature range: -35 degrees to +60 degrees), the output power of each channel of the system is simultaneously adjusted within a large range (eg, the adjustment range: +2.5 to -1DB) . After that, each channel uses an optimized software algorithm to decide whether to further fine-tune the power according to its own call situation (call quality), and the adjustment range is within a relatively small range (eg 1DB).

[0024] 1. Adjust the power according to the ambient temperature

[0025] The main devices used in RF circuits are analog devices, and their operating characteristics are closely related to temperature. A wide range of changes in ambient temperature will cause great fluctuations in the transmit power of the radio frequ...

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Abstract

The method includes steps: obtaining coefficient of temperature compensation from ambient temperature and empirical value; using the coefficient to control amplitude of baseband signal, and further tocontrol emission power of system. The equipment includes module of temperature collection and processor, module for processing code element in baseband, digital up converter, and D / A converter. The invention implements power control at base band, providing high precision for temperature compensation of power. Moreover, the invention removes complicated compensation circuit in radio frequency so as to simplify system and reduce cost. Features are: easy controlled flexible adjustment of step size, reduced interference between systems, raised system capacity etc.

Description

technical field [0001] The present invention relates to a method for realizing power control by wireless communication base station equipment of personal portable telephone system (PHS system). Background technique [0002] Wireless communication equipment, with the change of ambient temperature, the output power is easy to fluctuate, and the fluctuation range is often large, which cannot meet the requirements of system design. Therefore, it is usually necessary to implement temperature compensation in the RF power control circuit to ensure that the power output by the device remains relatively stable within a large temperature variation range. Some power control temperature compensation circuits are implemented in the radio frequency part. The temperature sensitive circuit is used to detect the external temperature, and the corresponding temperature compensation signal is obtained according to the temperature change, which is output to the automatic power control circuit to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/005
Inventor 李业刘兵余程钢
Owner 上海乾视通信技术有限公司
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