Multi-channel multiple access method based on reliable multi-step channel reservation mechanism

Abstract

The present invention provides a multi-channel multiple access method based on a reliable multi-step channel reservation mechanism. The method mainly comprises control channel reservation and data channel reservation. When a node competes successfully in a common control channel according to a distributed coordination function mechanism, a sending node and a receiving node exchange requests on a control channel to send information, and the selection of a data channel, the reservation on the control channel and the reservation on the data channel are completed. According to the method, the multichannel hidden terminal problem is solved by using the control channel reservation, through using multi-step data channel reservation, the data packet transmission without a conflict can be realized with only one control handshake, the control channel congestion is effectively alleviated and the MAC efficiency is improved, and the system performance is greatly improved, which means that the network throughput is improved and the average packet delay is reduced. According to the method, only one set of transceiver is needed, the realization is simple, a central control nodes and entire network synchronization are not needed, and the realization cost and complexity are reduced.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a multi-channel multiple access protocol. Background technique [0002] In a wireless communication system (such as a wireless local area network WLAN, a cellular network, etc.), there are usually multiple available wireless channels. For example, there are 3 non-overlapping channels on the unlicensed 2.4GHz band and 12 non-overlapping channels on the 5GHz band. The continuous growth of the number of mobile users and the continuous increase of users' demand for large-bandwidth services, such as video conferencing and other services, put forward new requirements for the improvement of the throughput of wireless communication systems. Therefore, how to design an efficient multi-channel multiple access (Multi-channel MAC, McMAC) protocol, so as to make full use of multiple wireless channels and improve the throughput of the wireless network, has become a very urgent problem t...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the deficiencies of the prior art, the present invention solves the problem of multi-channel hidden terminals on the premise that network time synchronization is not required and no additional overhead is introduced, that is, each node in the network only needs a set of transceivers, thereby improving system performance

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