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Method and device for scanning wireless local area network (LAN) channels

A channel scanning and wireless local area technology, which is applied in the field of wireless local area network channel scanning, can solve the problems of reducing the signal strength detection rate and sensitivity, failing to detect messages, and a small number of messages, so as to improve the detection rate of messages chance, increased speed and sensitivity, and extended scan time

Inactive Publication Date: 2010-03-03
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] Since mobile terminals (STA) such as wireless notebooks and mobile phones send very few packets when they are not performing operations such as file transfer or Internet access, it often happens that the AP cannot detect the packets within a reporting period.
In order to collect a certain number of packets, it often takes longer to detect, which obviously reduces the speed and sensitivity of signal strength detection

Method used

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  • Method and device for scanning wireless local area network (LAN) channels
  • Method and device for scanning wireless local area network (LAN) channels
  • Method and device for scanning wireless local area network (LAN) channels

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] The core idea of ​​the method provided by the present invention mainly includes: the AP records the channel of the message detected in the initial reporting period, and performs the following steps in each subsequent reporting period: if there is a recorded channel in the current reporting period, the AP Scan the recorded channels in the first N time periods, and scan the unrecorded channels in the remaining time periods of the current reporting cycle, where N is a positive integer. If there is no recorded channel, then in each time period All channels are scanned; the channel that detects the message in the current reporting period is added to the record, and the scanning result is reported.

[0021] The method flowchart of the embodiment ...

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Abstract

The invention provides a method and a device for scanning wireless local area network (LAN) channels; a wireless access point (AP) is used for recording the channels of message detected by initial reporting period, and the following steps are carried out within the subsequent reporting periods: if the recorded channels exist within the current reporting period, the AP can be used for scanning therecorded channels within the previous N periods of time and scanning the channels which are not recorded within the rest periods of time, wherein N is natural number; if the recorded channels do not exist, all the channels are scanned within each period of time; and the channels of the message detected by current reporting period are added into the record, and the scanning result is reported. Theinvention can improve the speed and the sensitivity of signal intensity detection.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and device for channel scanning of a wireless local area network. Background technique [0002] In wireless communication technology, as an important indicator, wireless signal strength often needs to be detected, which plays an important role in wireless signal analysis, wireless coverage testing, wireless positioning and other fields. Signal Strength Indication) characterization. [0003] The detection of wireless signal strength depends on channel scanning. The access point (AP) in monitoring mode actively monitors each channel. Taking dot11g as an example, the AP scans and monitors 13 channels within one second. After receiving the message, it can obtain the signal strength of the channel in that second, and then average the signal strength of the channel in a reporting period for each channel, and report it to the upper layer. like figure 1 As show...

Claims

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Application Information

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IPC IPC(8): H04W24/10H04W48/16H04W84/12
Inventor 计光
Owner NEW H3C TECH CO LTD
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