Data transmission method and transmission device, data reception method and reception device

Abstract

The embodiments of the present application disclose a data sending method, a sending device, a data receiving method, and a receiving device, wherein the data sending method is applied to the sending device, and includes: acquiring a target medium access control protocol data unit MPDU, where the target MPDU is obtained by specifying a The IP data packet of the service is obtained after encapsulation processing, wherein the sending device and the receiving device are connected through WiFi; the retransmission rate between the sending device and the receiving device is obtained; if the retransmission rate is greater than the preset retransmission threshold , a backup MPDU of the target MPDU is generated; and both the target MPDU and the backup MPDU are sent to the receiving device. For the designated service, the present application can reduce the probability of a single retransmission of the target MPDU in the WiFi segment by means of backup and multiple transmission, thereby reducing the transmission delay of the target MPDU in the WiFi segment.

Description

technical field [0001] The present invention relates to the technical field of data transmission, and in particular, to a data sending method and sending device, a data receiving method and a receiving device. Background technique [0002] Wireless Fidelity (Wireless Fidelity, WiFi) is currently the most common user network access technology, and is widely used in various scenarios such as home, community, and office. [0003] Due to factors such as co-frequency / adjacent-frequency interference and building blockage, the WiFi signal at the receiving end is weak, and there are usually areas or time periods with poor signal-to-noise ratios of WiFi signals. In such a situation where the signal is weak and the interference is large, it is easy to cause a lot of packet loss in the WiFi transmission data. In order to ensure no packet loss, packet loss retransmission is required. [0004] It can be understood that in the case of weak signal and large interference, the transmission...

AI Technical Summary

Problems solved by technology

[0004] It can be understood that when the signal is weak and the interference is large, the transmission delay of transmitting data through WiFi is inherently large

When packet loss occurs and retransmission occurs, the already large transmission delay will be increased several times due to retransmission, resulting in a significant increase in the transmission delay of data in the WiFi segment.

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