Wireless sensor network node data buffer forwarding control system and method

Abstract

The invention discloses a control system for node data caching and forwarding of a wireless sensor network. The system comprises a cache threshold calculating module, a data reception and cache monitoring module, a data forwarding starting module, a link speed counting module and a link stability predicting module, wherein the cache threshold calculating module calculates a cache threshold of an update node, the data reception and buffer monitoring module monitors buffer capacity and a data reception module, the data forwarding starting module starts a data forwarding module, the link speed counting module counts the link speed of a data forwarding process after data forwarding is completed, and the link stability predicating module predicts the link speed of data forwarding in the next time. The control system can realize self-adaptive polymerization of sensor node data, and reduces problems of energy consumption and package loss due to frequency data transmission. The invention also discloses a control method based on the control system for node data caching and forwarding of the wireless sensor network.

Description

technical field [0001] The invention belongs to the field of node data storage and forwarding in a wireless sensor network, in particular to a setting update of a node cache threshold and a data cache forwarding control system and method based on the cache threshold. Background technique [0002] The wireless sensor network integrates information acquisition, processing and transmission, and provides a new and effective way for human beings to study the physical world and obtain information about the physical world. It will play an important role in the fields of environmental monitoring and disaster forecasting. With the introduction and development of the Internet of Things technology, wireless sensor networks, as a supporting technology of the Internet of Things, have gained greater attention. Data acquisition is one of the main purposes of wireless sensor network research and application, data transmission is the basis of wireless sensor network application, and energy p...

AI Technical Summary

Problems solved by technology

[0005] 2) There are too many nodes cached data, which increases the possibility of cache overflow

If after the node generates or receives data, it stores too much data before making appropriate predictions and calculations on the transmission capacity and future arrival data, it may cause the data in the cache to be too large before the next data transmission. If there are too many, the buffer will overflow, and the newly generated or received data will be lost.

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