Safety effective data polymerization method for wireless sensor network

Abstract

The invention provides a safe and effective data aggregation method in a wireless sensor network, belonging to field of data aggregation. The existing method only considers the energy effectiveness problem, can not filtrate abnormal error data and baleful attack data, and can not ensure the effectiveness and the safety. The method comprises the steps as follows: firstly, during an intelligent grouping stage, the whole sensor network is divided into a plurality of groups, so as to ensure the sensor nodes in each group are adjacent to each other in physical position and the data values collected by the sensor are approaching; secondly, during a data transmission and recognition filtration stage, all sensor nodes in the group send the collected data to the master node in the group; the master node filtrates error or false data information by an abnormal data recognition algorithm; finally, the master node aggregates the filtrated data according to the specific sensor network application request and transmits the data to gateway node. The method ensures the effective and safe recognition and filtration of error and false data information.

Description

technical field [0001] The invention relates to a data aggregation method of a wireless sensor network, in particular to a data aggregation method of a wireless sensor network based on a grouping structure, which can be used to safely and effectively aggregate data collected by various sensor nodes in a wireless sensor network. Background technique [0002] Wireless sensor networks are widely used in various fields such as military reconnaissance, intelligent buildings, environmental monitoring and industrial control. First of all, since the sensor nodes themselves use wireless links for data transmission, the transmission signal is easily interfered, resulting in receiving wrong data or even losing data packets. Secondly, some sensor devices on the sensor nodes will also collect wrong data due to failure or damage. Finally, because the physical security of the wireless sensor network deployment area is difficult to guarantee, it makes the sensor nodes easy to be captured, ...

AI Technical Summary

Problems solved by technology

First of all, since the sensor nodes themselves use wireless links for data transmission, the transmission signal is susceptible to interference, resulting in receiving wrong data or even losing data packets

Secondly, some sensor devices on the sensor nodes will also collect wrong data due to failure or damage.

Finally, because the physical security of the wireless sensor network deployment area is difficult to guarantee, it makes the sensor nodes easy to be captured, which leads to the injection of malicious false data information into the wireless sensor network.

These abnormal error data and malicious attack data will lead to wrong aggregation results during data aggregation in wireless sensor networks, which will have a huge impact on the normal application of wireless sensor networks, and even produce unpredictable and serious consequences.

[0003] At present, the existing wireless sensor network data aggregation methods only consider the issue of energy efficiency, and cannot filter out abnormal error data and malicious attack data, and thus cannot guarantee the validity and security of wireless sensor network data aggregation.

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