A Frequency-Domain Hybrid MAC Protocol Communication Method Based on Adaptive Perception

Abstract

The invention discloses a hybrid frequency-domain MAC (medium access control) protocol communication method based on self-adaptive perception. The hybrid frequency-domain MAC protocol communication method comprises the following steps: receiving data transmission requests of one or more multimedia users, and detecting transmission characteristics of the multimedia users; dividing a channel into a plurality of sub-channels on a frequency domain on the basis of a multi-carrier wireless transmission platform, and analyzing the channel quality of each sub-channel; distributing MAC protocols and the sub-channels for the multimedia users according to the transmission characteristics of the multimedia users and the channel quality of each sub-channel; carrying out data transmission by the multimedia users in the corresponding sub-channels according to the acquired distributed MAC protocols. According to the hybrid frequency-domain MAC protocol communication method based on self-adaptive perception disclosed by the invention, mixing of a plurality of MAC protocols is carried out by using a frequency-division multiplexing technology; the self-adaptive perception capacity of data transmission is enhanced; relatively good self-adaption to diversified transmission requirements is achieved; the service quality for the users is improved; the total network throughput is increased.

Description

technical field [0001] The present invention relates to the technical field of wireless network communication, in particular to a communication method based on self-adaptive sensing and hybrid MAC protocol in frequency domain. Background technique [0002] As an extension of wired Ethernet, WLAN is rapidly developing in today's information society due to its advantages of high efficiency, fast networking, flexible networking, and low cost. With the integration of Internet services and wireless mobile communication network services, real-time multimedia services such as voice and video increase rapidly, and users have higher and higher requirements for Quality of Service (QoS). This requires that the wireless local area network can provide more bandwidth resources to meet specific multimedia applications with different traffic characteristics and different transmission requirements. The IEEE80.211 WLAN standard can only provide "best effort" service without QoS guarantee. I...

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Problems solved by technology

Similarly, this invention is based on the hybrid MAC in the time domain, and cannot utilize the differences in the frequency domain to improve the service quality of multimedia users

[0010] However, the channel utilization of the above hybrid time-domain MAC protocols is still very low under limited bandwidth resources, and the diversity of channel quality in the frequency domain cannot be used to further improve user service experience

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