A media access control mechanism based on wireless mesh network

Abstract

The invention discloses a mechanism for controlling media access of a wireless mesh network. A media access control structure based on the synchronous channel switching mechanism is constructed on a radio chip which supports multiple channels. In the process of network operation, an adaptation transmission mechanism based on the media access control structure is adopted to adaptively select a high-quality channel for communication and a selecting method of a channel switching mode is adopted to realize concurrent transmission to a great extent. Then the highly reliable mechanism for controlling media access of a wireless mesh network is formed and is applicable to the industrial field. The invention makes full use of the multi-channel ability provided by physical radio frequency hardware, optimizes the performance of the wireless network under the industrial communication environment of multi-network coexistence, multi-path phenomenon and strong electromagnetic noise and guarantees high-quality communication in the rugged industrial radio frequency environment.

Description

technical field [0001] The invention relates to a wireless network communication technology, and specifically describes a high-reliability medium access control (MAC) mechanism for a meshless (MESH) network oriented to industrial field applications. Background technique [0002] Compared with wired networks, wireless networks require no wiring and are easy to maintain, which is undoubtedly a huge advantage for industrial applications. With the maturity of wireless communication technology and the reduction of cost, industrial network wireless has become one of the trends. A typical industrial wireless monitoring network is as attached figure 1 As shown, a large number of wireless sensor nodes are distributed in various monitoring points of the industrial site. These nodes self-organize to form a network, and the field monitoring data is transmitted back to the gateway node in a multi-hop manner. While the wirelessization of industrial networks brings convenience, it also br...

AI Technical Summary

Problems solved by technology

However, these physical layer technologies often greatly increase the complexity of RF hardware, which in turn leads to an increase in hardware costs and is not conducive to the large-scale application of nodes in industrial environments.

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