Dynamic mechanism for efficient information transmission in WIFI system based on OFDMA technology

Abstract

The invention discloses a method for efficient information transmission in a WIFI system based on an OFDMA technology. In a WIFI network, an MAC frame field format is designed in order to support the OFDMA technology. The method comprises the steps of designing a frame type field and adding a control information domain field into the standard frame format, wherein the control information domain field is used for bearing control information and property information of data to be transmitted. The control information mainly comprises task priority, properties of the data to be transmitted, channel detection signals, channel state information, resource distribution information, competitive subscriber terminal information and backoff window information. Different types of frames bear information in corresponding fields in the transmission process, an access point acquires terminal quantity and information sent by a request, terminal resources are distributed, and a dynamic transmission mechanism is realized. The method disclosed by the invention mainly solves a problem of centralized requests of a great number of terminals in the transmission process of the WIFI system and a problem of diversity in data to be transmitted, and increases the simultaneously accessed user capacity.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and more specifically, relates to a dynamic mechanism for efficiently transmitting information in a WIFI system based on OFDMA technology. Background technique [0002] With the explosive growth of wireless smart terminals and mobile Internet, WIFI technology is profoundly changing people's communication, work and lifestyle. More and more end users (STA) are enjoying the high bandwidth and convenience brought by WIFI. In densely populated places such as train stations, airports, campus dormitories, libraries, etc., each access point (AP) needs to serve The number of concurrent end users (user terminals (STAs)) has increased dramatically. And with the rapid development of smart devices, the data transmitted by users is also more diverse. This makes the WIFI network speed drop significantly, and the user's online delay increases, which seriously affects the quality of the n...

AI Technical Summary

Problems solved by technology

This makes the WIFI network rate drop significantly, and the user's Internet access delay increases, which has a serious impact on the quality of the network, and also brings new challenges to the WIFI network.

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