WLAN high-density user coverage method and system thereof under open environment, and centralized controller

Abstract

The invention discloses WLAN high-density user coverage method and system thereof under open environment, and a centralized controller. The WLAN high-density user coverage method under open environment comprises the following steps of: configuring APs to enable frequency points of adjacent APs to be different; setting a minimum-rank modulation mode of the first AP according to signal levels and a signal to interference ratio of signals which are sent by the second AP adjacent to the first AP and are received by the first AP; and controlling the first AP to refuse to access to a terminal lower than the minimum-rank modulation mode. The invention also discloses a WLAN high-density user coverage system and a centralized controller under the open environment. Through setting the minimum-rank modulation mode of the APs, the invention limits access of a user so as to enable the user to access to the AP nearer; and under working at a higher modulation mode, the invention shrinks the coverage range of the AP in a disguised form, lowers same frequency interferences, and improves network overall efficiency.

Description

technical field [0001] The invention relates to a WLAN technology, in particular to a WLAN high-density user coverage method, system and centralized controller in an open environment. Background technique [0002] At present, WLAN technology has become a widely used technology for high-speed broadband wireless data services. It is often used in airports, hotels, office buildings, campuses and other environments. In this conventional environment, WLAN signals can be effectively isolated by physical means such as walls, and users The distribution density is small, and the concurrency rate of user data is small, so users can get a better online experience. However, in the open environment, where the user density is high and the concurrency rate is high, the existing frequency points cannot meet the service requirements. Therefore, it is necessary to increase the deployment density of Access Points (APs) to improve throughput. . [0003] It can be seen from the working mechani...

AI Technical Summary

Problems solved by technology

Therefore, if the transmit power of the AP is too low, the receiving level of the STA is low, and the channel quality is degraded. The communication between the STA and the AP will be carried out in a low-speed adjustment mode, which will affect the throughput of the entire system.

[0005] In the prior art, since the adaptive rate selection mechanism is adopted and the modulation mode of the access user is not controlled, the interference field is very large, and the interference between APs of the same frequency is serious.

At the same time, due to the low-speed communication rate between the terminal and the AP in the low-order modulation mode, the overall performance of the AP is affected, and the network does not work in an optimal state.

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