Wireless data retransmission method

A wireless data and data packet technology, applied in the field of wireless communication, can solve the problems of many links, long data interaction process, insufficient stability and reliability, and achieve the effect of avoiding interference, saving interaction process, and stable and reliable data retransmission.

Active Publication Date: 2019-09-20
WU QI TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]In this method, the main earphone needs to forward the signal that has not received data from the earphone to the mobile phone, and then the mobile phone retransmits the data. The whole process of data interaction is long and difficult. Many, not stable and reliable enough, and the slave earphone needs to send a signal of failed reception to the master earphone before the master earphone sends a signal of successful reception to the mobile phone, and due to the characteristics of Bluetooth technology, it can be used as the time slot interval between the master and slave earphones for communication. Only 189us in the worst case

Method used

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Embodiment 1

[0031] A wireless data retransmission method in this embodiment includes the following steps:

[0032] S100: If the master device receives the data packet and the slave device fails to receive the data packet, the slave device sends a reception failure signal;

[0033] S200: After the master device receives the reception failure signal from the slave device, it maintains the current carrier frequency and broadcasts the received data packet in the next time slot. Send and receive a successful signal; if the slave device does not receive the data packet from the master device, the slave device sends a reception failure signal in the next time slot, and re-executes S200;

[0034] S300: In the next time slot after the master device receives the reception success signal sent by the slave device, the master device and the slave device frequency hop to the same carrier frequency as the source device to receive the next data packet.

[0035] Specifically, the S100 includes:

[0036]...

Embodiment 2

[0058] The difference between this implementation and Embodiment 1 is that in this embodiment, the reception failure signal of the slave device is sent before the master device sends the reception success signal. During the time period, the slave receiving device sends a reception failure signal to the master device.

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Abstract

The invention relates to the technical field of wireless communication, in particular to a wireless data retransmission method, which comprises the following steps: S100, master equipment receives a data packet, slave equipment does not successfully receive the data packet, and the slave equipment sends a receiving failure signal; S200, after receiving the receiving failure signal of the slave device, the master device maintains the current carrier frequency and broadcasts the received data packet in the next time slot, and if the slave device receives the data packet of the master device, the slave device sends a receiving success signal in the next time slot; and if the slave device does not receive the data packet of the master device, the slave device sends a receiving failure signal in the next time slot, and the step S200 is executed again. According to the wireless data retransmission method provided by the invention, wireless data retransmission can be realized more stably and reliably, and the system design requirement can be reduced.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a wireless data retransmission method. Background technique [0002] Wireless communication is a communication method that uses the characteristics of electromagnetic wave signals to propagate in free space for information exchange. Zig-Bee, Bluetooth (Bluetooth), wireless broadband (Wi-Fi), ultra-wideband (UWB) and near field communication (NFC) ) and other wireless transmission technologies are widely used wireless communication standards in recent years. Frequency hopping is one of the most commonly used spread spectrum methods in wireless communication. Its working principle refers to the communication method in which the carrier frequency of the transmission signal transmitted by both parties is discretely changed according to a predetermined rule. The interval of frequency hopping is the duration in a frequency band. Usually called a slot. Taking Bluetooth ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/04H04L1/18H04L1/16
CPCH04W28/04H04L1/1867H04L1/1829H04L1/1607
Inventor 彭朝飞陈飞
Owner WU QI TECH INC
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