Low-power-consumption-bluetooth-based data transmission method and system, and master and slave devices

Abstract

The invention, which relates to the field of the bluetooth technology, discloses a low-power-consumption-bluetooth-based data transmission method and system, and master and slave devices. The low-power-consumption-bluetooth-based data transmission method comprises: a slave device sends a first type of broadcast, wherein the first type of broadcast includes the name of the slave device; paired connection with a master device is realized by using a received connection request from the master device, wherein the connection request includes an address of the master device; the address is recorded; connection with the master device is cut off; and a second type of broadcast is to the address, wherein the second type of broadcast includes a to-be-transmitted effective load. Therefore, when one master device carries out communication with a plurality of slave devices, the number of the slave devices is extended, the communication time delay is low, stability is high, and the cost is low. The method is suitable for existing low-power-consumption bluetooth device with high popularity.

Description

technical field [0001] The invention relates to the technical field of bluetooth, in particular to a data transmission method based on bluetooth low power consumption, a slave master device and a system. Background technique [0002] With the rapid development of electronic technology, wireless connection technology has been more and more widely used in people's life and work. For example, a smartphone controls a smart TV through a wireless connection. Bluetooth technology is a wireless connection technology that develops rapidly and is widely used at present. [0003] The data transmission method of Bluetooth is generally based on the Bluetooth protocol, and currently the Bluetooth Low Energy (BLE) protocol is widely used. The data interaction process of traditional low-power Bluetooth is as follows: the slave device (Slave) initiates a device broadcast (connectable undirected advertising event) in the broadcast channel, where the device broadcast contains information suc...

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Problems solved by technology

[0004] The inventor finds that in the process of realizing the present invention, a central node can communicate with seven slave nodes at most in the commonly used bluetooth low power consumption (BLE) protocol standard at present, therefore, when a master device (Master) communicates with a plurality of slave nodes When the device (Slave) communicates, the number of slave devices is limited, and the master device (Master) establishes a communication connection with each slave device (Master) in turn, and obtains the payload of each slave device (Slave) through periodic polling, but this The time extension of the communication method; and usually the master device (Master) of Bluetooth low energy is generally a smart device, such as a mobile phone, a set-top box, etc., and the application software usually used on a smart device cannot realize the timing accuracy of the underlying Bluetooth low energy device. Control, when a master device (Master) communicates with more than four slave devices (Slave), the probability of communication failure is greatly increased

Although the Bluetooth ad hoc network (BLE MESH) method can solve the limitation of the number of slave devices, the device in communication must be used as both a master device and a slave device, which increases the hardware cost of the device and cannot communicate with other devices. Communication with devices without Bluetooth ad hoc network (BLEMESH) function is limited, which is not conducive to promotion

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