Method for adjusting emission power of wireless data card and wireless data card therefor

Abstract

The embodiment of the invention discloses a wireless data card which includes an enhanced power supply interface module which is used to provide an interface coupled with the enhanced power supply and obtain power from the enhanced power supply, a universal serial interface power supply interface module which is used to connected with the universal serial interface and obtain power from the universal serial interface, a main processor which is used to detect the power signal of the enhanced power supply interface module and the universal serial interface power supply interface module, and to generate power control signal according to the detected signal, and a power amplifying module which is used adjust the transmitting power of the wireless data card according to the power control signal. The embodiment of the invention also discloses a method for adjusting the transmitting power of the wireless data card. Adopting the invention can control the wireless radio frequency transmitting power according to the status of power supplying, increase the transmitting power of the wireless radio frequency and ensure the performance of wireless transmission.

Description

technical field [0001] The invention relates to power adjustment technology, in particular to a method for adjusting the transmission power of a wireless data card and the wireless data card. Background technique [0002] With the development of wireless networks, a large number of portable computers access the Internet (Internet) through wireless data cards. Due to the widespread use of the Universal Serial Interface (USB, Universal Serial Bus), wireless data cards are often made into Universal Serial Interface Wireless Data Cards (USB Dongle), that is, the wireless data card obtains power through the USB port and communicates with the Personal computer (PC, PersonalComputer) for data communication. [0003] In the wireless data card of the prior art, in order to achieve the best communication effect and control power consumption, software is used to control the transmission power of the radio frequency, that is, when the wireless data card is far away from the base statio...

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Problems solved by technology

[0008] In the process of completing the present invention, the inventor found that there are at least the following problems in the prior art: due to the wide variety of wireless transmission environments, in some relatively harsh environments, the wireless signal transmission attenuation is relatively large, if the USB Dongle uses a lower transmission power (For example, 23dbm), it will affect the performance of the system, due to the large attenuation of wireless signal transmission, it may even lead to the failure of wireless signal transmission

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