WiFi low-power-consumption method and device for Internet of Things

By optimizing the wake-up mechanism of IoT WiFi devices through timer pre-start signals and TIM parsing modules, the problems of high power consumption and poor communication reliability due to invalid wake-up are solved, and low-power and high-reliability IoT WiFi communication is achieved.

CN121865385APending Publication Date: 2026-04-14SHANGHAI LIANGXINJI SEMICONDUCTOR TECHNOLOGY CO LTD
0 Cites 0 Cited by

Patent Information

Application Number
CN202610119863.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-28
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

In low-frequency, low-data-communication scenarios, IoT WiFi devices suffer from high power consumption due to invalid wake-up caused by PSM mode, which cannot meet the requirements for long battery life and has poor communication reliability.

Method used

A timer pre-start signal mechanism is adopted to wake up the radio frequency module in advance through the TIM parsing module. Combined with the judgment logic module and interrupt controller, the sleep state of the CPU and radio frequency module is optimized. The CPU module is only woken up when there is data transmission. The TIM field of the Beacon frame is parsed using the association identifier to determine the presence of data.

Benefits of technology

Significantly reduces power consumption from invalid wake-ups, extends battery life to 12 months, and reduces data loss rate to below 0.1%, meeting the long battery life and reliability requirements of industrial scenarios.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention provides an Internet of Things WiFi low power consumption method and device, the device comprises STA equipment and a WiFi hotspot capable of distributing a unique association identifier to the STA equipment, and the STA equipment comprises a timer, a judgment logic module, a CPU module, a radio frequency module and an analysis module; the method further comprises the following steps that S1, the timer sends a pre-starting signal to the judgment logic module according to a preset starting period, and the judgment logic module starts the radio frequency module; s2, the radio frequency module receives the transmission frame and transmits the transmission frame to an analysis module, and the analysis module analyzes the transmission frame according to the association identifier to obtain an indication signal and transmits the indication signal to a judgment logic module; and S3, the judgment logic module judges whether data transmission exists or not according to the indication signal, if not, the judgment logic module closes the radio frequency module, and the CPU module is kept in a dormant state. By adopting the method and the device, the total standby power consumption is reduced by more than 60%, and the delay of receiving the transmission frame by the STA equipment is doubly reduced.
Need to check novelty before this filing date? Find Prior Art