Method and system for automatically distributing wireless communication channels

Abstract

The invention discloses a method and a system for automatically distributing wireless communication channels. The method comprises the following steps of: periodically measuring the channel condition of each effective channel corresponding to an AP (Access Point) to obtain channel measurement sample values of each effective channel; updating a channel quality evaluation sheet corresponding to each effective channel by adopting the channel measurement sample values in a plurality of measurement periods; monitoring a trigger signal, wherein the trigger signal comprises a periodical judgment request; and judging whether channel selection is required again according to the channel quality evaluation sheet corresponding to the current work channel of the AP when the judgment request is monitored; if so, selecting a target channel according to the channel measurement sample values of each effective channel; and switching the current work channel of the AP to the target channel. The method and the system can effectively improve the accuracy of channel quality judgment and shorten the execution time of channel distribution, so that the time validity is improved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method and system for automatically allocating wireless communication channels. Background technique [0002] In the current mobile communication system, channel allocation algorithms are mainly divided into three categories: fixed channel allocation, dynamic channel allocation and random channel allocation. However, unlike mobile communication networks, the number of effective channels of WLAN (Wireless Local Area Network) is limited, and channels are very scarce resources. For example, only three effective channels are available for 802.11b / g / n, and each wireless access Point AP (Access Point) can only have one working channel, that is, it works on a specified very limited bandwidth channel, and as far as possible to ensure that it does not overlap with other channels in use, and all workstations STA (Station) associated with the AP ) shares the channel with the AP in a...

AI Technical Summary

Problems solved by technology

When channel scanning is performed in a WLAN network, the channel measurement sample value obtained by the scanning must reflect the channel quality accurately and in a timely manner. Therefore, event-triggered scanning is usually used, that is, channel allocation needs to be re-assigned. However, after channel allocation is performed after measurement at this time, the entire allocation process takes too long, and if the channel needs to be reassigned due to the detection of radar signals at this time, the timeliness of immediately switching channels cannot be met.

However, if periodic scanning is used, due to the burstiness of the channel and other reasons, the latest scanning results cannot accurately reflect the channel quality, and there is a large chance of channel quality judgment.

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