Method and system for identifying reasons of ZigBee sensor network packet loss

Abstract

The invention discloses a method and system for identifying reasons of ZigBee sensor network packet loss. The method includes the steps that a receiving node carries out high-frequency sampling on corresponding receiving signal strength information and link quality information while receiving a data package; if the received data package fails to pass the cyclic redundancy check, collision mode fragments possibly existing in the high-frequency sampled receiving signal strength information and the high-frequency sampled link quality information are searched, and the modes monitored in the receiving signal strength information and the link quality information will be regrouped into a time-ordered mode sequence; the receiving node searches for the generated mode sequence and outputs the packet loss reasons of the damaged data package by using corresponding identifying rules; the receiving node adds the specific reasons of data package loss in an acknowledgment packet sent to a sending node. Through the method, network throughput can be improved and retransmission frequency can be reduced, so the purposes of saving energy and prolonging working time can be achieved.

Description

technical field [0001] The present invention relates to a kind of method and system for identifying the cause of ZigBee sensor network packet loss, in particular to a method for identifying the cause of ZigBee sensor network packet loss by using the received signal strength and link quality information recorded by ZigBee nodes when receiving data packets method and system. Background technique [0002] ZigBee sensor network is the focus of wireless network research in recent years. It has gained a large market share in commercial applications in recent years. It has a large user base and a good market prospect, especially when it requires low energy consumption, low bandwidth occupation, The industrial control field of real-time information feedback has been widely used. However, since the ZigBee sensor network works in the same frequency band as the WiFi network and the Bluetooth network, and the working environment of the ZigBee sensor network is often affected by human a...

AI Technical Summary

Problems solved by technology

[0004] However, under normal circumstances, the acknowledgment packet of the ZigBee sensor network only contains a kind of binary data, so the sending node only knows whether the data packet is received smoothly, and does not know the reason for the loss of the data packet; in order to identify the data packet at the receiving node The cause of loss is quite difficult. Traditional methods usually use statistical and machine learning methods to identify the cause of packet loss. However, since statistical calculations and classifier training usually require multiple data packets, it usually takes at least several seconds to identify The cause of packet loss and channel conditions, which may have changed

The timeliness of this method is so poor that it cannot meet the application needs in actual engineering.

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