Time-division scheduling method, controller and first AP

Abstract

The present invention relates to the technical field of communications. Provided are a time division scheduling method, a controller and a first access point (AP), which are used for solving the technical problem in the prior art that the uplink transmission of stations (STA) of other APs will be suppressed while reducing the problems of interference between APs. The time division scheduling method is applied to a controller and comprises: determining whether an STA covered by a first AP is disturbed by a second AP (S201); and according to the determination result, allocating time slices to the first AP, if the determination result is that at least one STA covered by the first AP is disturbed by the second AP, not overlapping time slices corresponding to the at least one STA of the time slices allocated to the first AP with time slices of the second AP (S202).

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a time division scheduling method, a controller and a first AP. Background technique [0002] There are many types of interference in WiFi networks, including interference within the carrier's network, inter-network interference between the carrier's WiFi network and other WiFi networks, and inter-system interference with other devices using unlicensed spectrum. [0003] Normally, when a WiFi node detects that its received signal strength exceeds the CCA (Clear Channel Access: Channel Clean Access) threshold, it will synchronize to this signal and decode the data packet. After the WiFi node needs to decode the MAC packet, it will The MAC (Media Access Control: Media Access Control) source address and destination address know whether the MAC is sent to itself. If the data packet is not sent to the node, the node is "captured" by the data packet. During the "capture...

AI Technical Summary

Problems solved by technology

During the "capture" period, the node cannot receive and send its own data packets, resulting in an increase in the PER (Packet Error Rate: packet error ratio) of the interfered or interfered node, a reduction in the MCS (Modulation and Coding Scheme), and a decrease in performance serious

[0004] like Figure 1a As shown, AP (Access Point: access node) 1 and AP2 are on the same frequency, AP1 sends data packet 1 to STA (Station: station) 1, and AP2 sends data packet 2 to STA2, if data packet 2 is sent first, then as long as When the signal strength of data packet 2 arriving at STA1 exceeds the detection threshold of STA1, STA1 will receive data packet 2, which is captured by AP2, causing STA1 to be unable to accurately receive the data sent by AP1.

In actual scenarios, STAs can receive signals from 5 to 6 APs with the same frequency, so the acquisition problem is serious.

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