Message sending method and device

Abstract

The invention discloses a message sending method and a message sending device which are used for accurately judging whether a channel reservation mechanism is started when a sending end of a wireless network sends a message, so that irrational speed reduction in the wireless network is avoided, the performance of the wireless network is improved, and the expense of a wireless network system is reduced. The message sending method comprises the following steps of: when the sending end sends the message at the time, judging whether a channel reservation parameter value stored at the sending end is less than a preset channel reservation parameter threshold value; if the channel reservation parameter value stored at the sending end is less than the preset channel reservation parameter threshold value, stopping the channel reservation mechanism; if the channel reservation parameter value stored at the sending end is not less than the preset channel reservation parameter threshold value, starting the channel reservation mechanism, and sending a channel reservation message to a receiving end; and after a confirm message of the channel reservation message, which is sent by the receiving end, is received, subtracting 1 from the channel reservation parameter value.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a message sending method and device. Background technique [0002] A wireless local area network (WLAN, Wireless Local Area Network) provides a wireless connection service of a local area network, which can provide high-speed wireless data access within a small area. The access point (AP, Access Point) is a wireless transceiver device of the wireless local area network and an important component of the wireless local area network. The AP can convert the data received through the wired network (such as the Internet) into a wireless signal and send it to the terminal or other networks. device, and convert the received wireless signal into data and forward it to the wired network. [0003] like figure 1 As shown, it is a schematic diagram of the network structure of a wireless local area network. The terminal is generally a device that supports WLAN access, ...

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Problems solved by technology

[0006] However, in the above-mentioned first type of method, the signal strength alone cannot truly reflect the channel quality. For example, even if the signal Although the statistics of the packet loss rate and throughput rate can reflect the channel quality to a certain extent, there are certain defects: when the packet loss rate is not caused by noise interference but other reasons, such as collisions, even if the Even when the rate is reduced to the lowest, packet loss will still occur. At the same time, this unreasonable speed reduction affects the performance of the wireless network.

Because the length of RTS frame and CTS frame is very short, the probability of its own collision is reduced, so the RTS / CTS mechanism can effectively operate in the wireless environment where there is conflict. However, RTS frame and CTS frame will prolong the message transmission process and bring certain system overhead

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