Transmission power adjustment method, device and access equipment

Abstract

The invention provides a method and a device for adjusting transmission power and an access device. The method includes: selecting transmission power corresponding to a power level in a power level range corresponding to a terminal as current transmission power, and calculating packet loss rate corresponding to transmission speed under the current transmission power; calculating evaluation value of the current transmission power according to the packet loss rate corresponding to the transmission speed; and adjusting the current transmission power according to the evaluation value of the current transmission power. The invention further provides the device for adjusting the transmission power and the access device. Optimum transmission power for a terminal can be selected, large same-frequency / adjacent-frequency interference caused by overlarge transmission power is avoided, or a phenomenon that the terminal can not receive normally due to the fact that the transmission power is too small is avoided.

Description

technical field [0001] The present invention relates to communication technology, in particular to a transmission power adjustment method, device and access equipment. Background technique [0002] With the development of broadband wireless access, the breadth and depth of wireless local area network (Wireless Local Area Network; hereinafter referred to as: WLAN) applications have increased to an unprecedented level. Among them, the WLAN based on IEEE802.11b works in the 2.4GHz frequency band. The frequency range of this frequency band is 2.4GHz~2.4835GHz. In this way, WLAN will inevitably expose channel resource conflicts in dense deployment environments such as university networks, and the same-channel / adjacent-channel interference will seriously lead to the problem of decreased WLAN network throughput. Minimizing the RF transmit power of an access point (AccessPoint; AP for short) in a WLAN is an effective method for reducing co-channel / adjacent channel interference. Ho...

AI Technical Summary

Problems solved by technology

[0004] However, when the STA is relatively close but uses a small transmit power to send messages to the AP, the method in the prior art will select an excessively high AP radio frequency transmit power; when the STA is far away but uses a large transmit power to When the AP sends packets, the above method will select too low AP RF transmit power, resulting in large co-channel / adjacent channel interference, or causing STAs to fail to receive normally.

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