A real-time data transmission method conforming to IEEE802.11 protocol

Abstract

The invention discloses a real-time data transmission method meeting an IEEE802.11 (Institute of Electrical and Electronic Engineers 802.11) protocol, which comprises the following steps that 1), a TIM (Terminal Input Message) and a DTIM (Delivery Traffic Indication Message) are sent periodically; 2), an activity cycle, and a plurality of layers of awakening cycles with sleep degrees changing from light to deep relative to the activity cycle are defined in a wireless terminal; the wireless terminal inquires a base station end whether data communication exists after receiving the DTIM; and 3), a cycle parameter of the DTIM is set to allow a wireless link layer protocol stack to send the DTIMs with different interval cycles within the activity cycle and the different awakening cycles. The method has the benefits that the method has high compatibility and is suitable for the vast majority of smartphones in the market or other mobile terminals; the mobile terminal meeting the IEEE802.11 is not required to be designed specially; a good balance between the power saving performance and the response time of the mobile terminal is achieved; and the method is applied to some high-real-time wireless communication systems with burst data transmission and unstable data flow sizes.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a real-time data transmission method conforming to the IEEE802.11 protocol. Background technique [0002] In the wireless communication system between wireless devices and external terminals, how to better realize the balance between real-time data transmission, frequency band application and energy consumption efficiency is an important issue, especially for some data transmission with strong burst Data communication, such as in-vehicle applications such as remote opening of car doors / lights, danger alarms, etc., has sudden data transmission and requires short delays, while in-vehicle video and voice transmission require high transmission service quality, such as big data Throughput and fast response time, etc.; on the other hand, terminals that are generally powered by batteries often have stricter power-saving and sleep mechanisms, and generally have two working modes: a...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a real-time data transmission method conforming to the IEEE802.11 protocol. By defining multiple sleep levels and corresponding wake-up cycles, it can be compatible with different mobile terminals and overcome the poor compatibility in the prior art. , the shortcoming that real-time performance is not strong, thereby realizes the purpose of the present invention

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