Efficient feedback confirmation method suitable for LoRa transmission

Abstract

The invention relates to the technical field of Internet of Things communication, and discloses a high-efficiency feedback confirmation method suitable for LoRa transmission, and the method comprises the following steps: S1, a step of data packet transmitting, namely a step of enabling a transmitting end to transmit a data packet; S2, a receiving step, namely a step that, after receiving one data packet, a receiving end does not need to immediately feed back ACK but waits for the indication of the transmitting end; and S3, a step of feedback transmission, namely a step that the transmitting end comprehensively considers local cache data and business data characteristics to determine whether to continue to send data, if a plurality of data packets need to be transmitted, the transmission is continued, and if ACK feedback needs to be received, the receiving end is indicated to send feedback in the following data packets, and a receiving window is opened at the same time. When a plurality of data packets are transmitted, the transmitting end does not need to frequently switch the receiving and transmitting mode, and only needs to switch the receiving and transmitting mode once, so that the switching time and the software control complexity are greatly reduced, the transmission of the plurality of data packets can be completed by only needing one BlckACK frame, and the empty interface time is saved.

Description

technical field [0001] The invention relates to the technical field of Internet of Things communication, in particular to an efficient feedback confirmation method suitable for LoRa transmission. Background technique [0002] LoRa is currently a widely used long-distance, low-power wireless communication technology. It uses spread spectrum technology to significantly improve the sensitivity of signal reception, thereby achieving long-distance transmission. It is widely used in the field of Internet of Things communication technology. However, due to the adoption of spread spectrum technology, the data transmission rate of LoRa is relatively low. Generally speaking, the larger the spreading factor, the higher the sensitivity and the lower the transmission rate. [0003] In the classic wireless transmission feedback mechanism, the transmission of each data packet is followed by an ACK (acknowledge, confirmation, used to indicate whether the data transmission is received correc...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides an efficient feedback confirmation method suitable for LoRa transmission, which solves the problem that in the existing LoRa transmission, when there are many data packets, software control is required to switch the sending and receiving mode repeatedly, which wastes the time for switching between sending and receiving. , and the efficiency of the software switching process is poor. When transmitting multiple data packets, multiple ACK frame transmissions are required, which is a waste of air interface time.

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