Wireless network card dynamic power management method based on embedded system

Abstract

The invention provides a wireless network card dynamic power management method based on an embedded system, which comprises the following four steps: 1, dividing the use state of a wireless network card into a first state Active, a second state Standby / Waiting, a third state Sleep, a fourth state Off and a fifth state Idle, wherein the Active means that the wireless network card is busy receivingand sending data; the Standby / Waiting means that the wireless network card does not receive and send the data, but a wireless signal transmitter does not power off; the Sleep means the wireless signal transmitter of the wireless network card powers off, but the other power consumption units are still in operation; the Off means that all the power consumption units of the wireless network card arein a power-off state; and the Idle means that the wireless network card performs regular conversion between the Standby state and the Sleep state; 2, realizing the load detection of the wireless network card by operating the kernel of the embedded system; 3, realizing the state conversion of the wireless network card in accordance with the load condition obtained in step 2; and 4, optimizing the wireless network card dynamic power management by adopting a Semi-Markov model.

Description

technical field [0001] The invention belongs to the technical field of dynamic power management of embedded systems, in particular to a method for managing dynamic power of a wireless network card based on an embedded system. Background technique [0002] In recent years, with the rapid development of embedded technology, embedded devices have been widely used. While providing convenience to people's daily life, some defects and shortcomings have also been exposed. Energy consumption is the focus and focus of general attention in embedded system design. [0003] Aiming at different system components of an embedded system, various power management technologies have been proposed in the industry, such as CPU frequency modulation technology. With the advancement of wireless technology, wireless communication is becoming more and more important in embedded systems. In other words, the energy consumption of the wireless network card occupies a large proportion in the total ener...

AI Technical Summary

Problems solved by technology

[0005] At present, foreign research on wireless network card DPM mainly focuses on the theoretical research of DPM algorithm, and the specific implementation of the algorithm is less involved; domestic research on DPM mostly takes CPU and disk as the research objects, and there is almost no research on wireless network card DPM.

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