Detecting and protecting method for confirming frame attack of wireless sensor network

Abstract

The invention provides a detecting and protecting method for confirming frame attack of wireless sensor network, which is executed by the following steps of: detecting whether there is ACK frame interference attack by LQI (Link Quality Indicator) and times of re-transmitting data; resisting the ACK frame interference attack by randomly setting the ACK frame sending time slot; detecting whether there is ACK frame overwhelming attack by LQI information and the data receiving condition. The detecting and protecting method for confirming frame attack of wireless sensor network provides a method for detecting frame interference attack and frame overwhelming attack based on dynamic threshold value as well as provides self-defending measures by randomly selecting the sending time and hiding the sequences, which is simple and easy to implement.

Description

technical field [0001] The invention belongs to the field of network communication, and in particular relates to a detection and protection method for a confirmation frame attack of a wireless sensor network. Background technique [0002] With the development and application of wireless sensor networks more and more widely, its security issues are becoming more and more important. Due to the limitations of the computing power, energy, and transmission media of the sensor nodes themselves, wireless sensor networks are more likely to be effectively attacked, especially with intelligent attack methods. Wireless sensor networks use open and bandwidth-limited channels for communication, so intelligent attackers can affect the normal operation of the entire sensor network as long as they bypass the MAC (Media Access Control) security mechanism. [0003] Among the current wireless communication standards, IEEE 802.15.4 has become the mainstream wireless standard of the underlying ...

AI Technical Summary

Problems solved by technology

The process of the first attack is that the attacker uses continuous channel monitoring and data packet analysis, and performs signal interference when the receiver sends an ACK frame, so that the sender retransmits the data frame because it cannot confirm the success of the transmission until the maximum retransmission is reached. times, eventually leading to the depletion of energy of the sender node

The second type of attack is that the attacker forges and sends a legal ACK frame by using channel monitoring and data packet analysis, so that the sender can confirm that the transmission is successful, so that the receiver cannot obtain the data frame replay if it fails to receive normally. transmission opportunities, resulting in the loss of data information

Currently, the detection and defense mechanisms required above are not available

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