Anti-interference method and equipment of ZigBee network

Abstract

The embodiment of the invention discloses an anti-interference method and equipment of a ZigBee network. The method and equipment are used for intensifying the anti-interference performance of the ZigBee network so that communication reliability can be improved. The method includes the steps of detecting whether a network node in the ZigBee network is interfered by a WiFi channel, switching the network node to a first channel in a channel list which includes all channels in the ZigBee network if the network node is interfered, judging whether the current channel of the network node is available after the network node is switched to the first channel, judging whether the network node receives a command frame which is sent by a neighbor node of the network node and indicates that other channels are not available channels within first preset time if the current channel is the available channel, and broadcasting a channel selection frame on the current channel to the neighbor node of the network node through the network node if the command frame which indicates that other channels are not available channels is not received.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an anti-jamming method and equipment for a ZigBee network. Background technique [0002] ZigBee is an emerging short-distance wireless communication technology that has emerged in recent years. It adopts the IEEE802.15.4 standard as its physical layer and media access layer specifications, and its main application areas are low-rate wireless personal area networks (LR-WPAN). , Low Rate Wireless Personal Area Network), which has the characteristics of low power consumption, low cost and low complexity. [0003] WiFi based on IEEE802.11b standard is the mainstream technology of wireless LAN today. As the market demand for low-speed applications continues to grow, there are more and more application scenarios that require the coexistence of ZigBee and WiFi systems. However, since both of them mainly work in the 2.4GHz industrial scientific medical free frequency band (ISM Ba...

AI Technical Summary

Problems solved by technology

[0006] The existing FA anti-interference method achieves interference avoidance by switching the entire network to a new channel, but when there are a large number of nodes in the network, the entire network switches to the same channel, and the overhead is too large, resulting in unnecessary waste; when multiple channels in the ZigBee network are interfered by the WiFi channel, the entire network must be switched to the same channel at the same time, such an available idle channel may not exist, resulting in the existing FA anti-interference method is not in any Interference avoidance can be effectively realized in all scenarios, but its application has limitations

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