Method for adaptively updating receiving window of Bluetooth slave device

Abstract

The invention discloses a method for adaptively updating a receiving window of Bluetooth slave equipment, and the method comprises the following steps: opening the receiving window, setting the starting point moment of a connection event in each receiving period as T2, enabling the T2 moment to be interrupted, and allocating a counter with an initial value of N to the T2 moment; judging whether the numerical value in the counter is 0 or not when interruption is generated at each T2 moment, and if not, subtracting 1 from the numerical value in the counter; if so, closing the receiving window; in the window period of the receiving window, receiving the demodulation completion signal through the baseband and judging the numerical value in the counter at the current moment, if the numerical value is 0 or N, updating the clock parameter of the current slave device, and aligning the starting point moment of the connection event with the starting point of the current data packet; otherwise, directly receiving the data packet and decoding the data. According to the method, a receiving window of the Bluetooth slave device is arranged, so the problem of unstable connection of the low-power-consumption Bluetooth slave device is solved; by dynamically adjusting the opening time of the receiving window, the stability of the slave device is improved, the windowing time is reduced as much as possible, and power consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of Bluetooth low-power data transmission, and more specifically relates to a method for adaptively updating a receiving window of a Bluetooth slave device. Background technique [0002] Currently, the BLE (Bluetooth Low Energy, Bluetooth Low Energy) technology is a low-cost, short-range, and interoperable wireless technology. In order to realize this technology, the BLE protocol stipulates that when the radio frequency is not needed, the air radio frequency is completely turned off. Compared with traditional Bluetooth technology, BLE technology achieves low power consumption of devices by shortening the radio frequency turn-on time, quickly establishing a connection, and reducing the peak power consumption of sending and receiving. [0003] In the BLE protocol, two roles are included, but the names of the roles are different in different periods of connection establishment and connection success. [0004] ...

AI Technical Summary

Problems solved by technology

[0013] In view of this, the present invention provides a method for adaptively updating the receiving window of the Bluetooth slave device, which effectively solves the problem of unstable connection of the low-power Bluetooth slave device due to clock instability and clock mismatch. Guarantee the normal communication between the master device and the slave device

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