Multi-channel multiple access method based on MIMO transmission mechanism

Abstract

The invention provides a multi-channel multiple access method based on an MIMO transmission mechanism. During the competitive stage, a node reuses a data antenna to carry out channel competition in a common control channel, after the channel competition is successes, selection of the data channel and confirmation of data transmission period duration are completed through interaction information in a 2*2MIMO manner, and during a transmission stage, the node reuses a control antenna to transmit a data packet in a data channel. The multi-channel multiple access method based on the MIMO transmission mechanism is simple to implement, and can be implemented in firmware which supports multi-channel network cards, and can be implemented in a driving program at the same time, and the network throughput is greatly increased; by employing a distributed working mode, a centralized control node and whole network time synchronization are not needed, a control packet and the data packet can be transmitted in a 2*2MIMO transmission manner, substantial spatial multiplexing gain can be brought about, furthermore the system performance is greatly improved, the network throughput is increased, and the end-to-end time delay is reduced.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a multiple-input multiple-output transmission mechanism. Background technique [0002] At present, due to the convenience and flexibility of WLAN, it has been developed by leaps and bounds. However, with the continuous growth of the number of mobile users and the increasing demand of users for high-bandwidth services, such as video conferencing and other high-bandwidth services, channel resources become increasingly tight. Therefore, how to maximize the use of the current limited channel resources has become one of the most concerned issues in WLAN. [0003] At present, the traditional single-channel multiple access method based on IEEE 802.11 has been unable to effectively meet the growing demand for large-bandwidth services. Therefore, in order to more effectively use the multi-channel resources in the wireless network, for example, IEEE802. Different data transmission...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies of the prior art, this patent aims to use the multiple-input multiple-output MIMO (Multiple-Input Multiple-Output) transmission technology to solve the control of the existence of the DCA protocol without the need for network time synchronization and without introducing additional overhead. Channel bottleneck problem, further improve system throughput performance

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