Multi-Channel Deauthentication Frame Transmission for Wireless Security
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Solution Overview
Problem
In wireless communication networks, especially those adhering to IEEE 802.11 standards, there is a challenge in efficiently managing deauthentication and disassociation processes, particularly when client devices remain connected to a primary control channel even after the access point has changed its channel, leading to potential security vulnerabilities and communication overhead due to missed deauthentication frames during sleep mode.
Innovation Solution
The implementation of circuitry that provides disassociation or deauthentication frames on multiple channels, including the primary and secondary channels, and even across wider bandwidths, to ensure that client devices receive these frames and take appropriate actions, thereby preventing deadlock situations and ensuring secure disconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If deauthentication frames are sent only on the primary control channel, then communication overhead is reduced, but client devices in sleep mode may miss these frames leading to security vulnerabilities and deadlock situations
Solution Approach 1:
The patent segments the deauthentication frame transmission across multiple channels (primary control channel and secondary channels) rather than relying on a single channel. This ensures that if a client device misses the frame on one channel (e.g., during sleep mode), it can still receive the frame on another channel, thereby improving reliability without significantly increasing overall communication overhead.
Solution Approach 2:
The patent introduces a new dimension to deauthentication frame transmission by utilizing the channel dimension (frequency spectrum) more fully. Instead of transmitting only on the primary control channel (one-dimensional approach), the system transmits on multiple channels simultaneously or sequentially, adding another dimension to the transmission strategy and ensuring better delivery reliability.
2Reliability
If deauthentication frames are transmitted on multiple channels, then client devices are more likely to receive the frames, but communication overhead increases
Solution Approach 1:
The patent applies partial action by transmitting deauthentication frames on multiple channels only when necessary (e.g., when client devices are known to be in sleep mode or when security requirements demand higher reliability). This avoids unnecessary transmissions on all channels in every situation, thereby limiting communication overhead while still achieving the reliability benefit when needed.
Solution Approach 2:
The system dynamically changes transmission parameters such as which channels to use, transmission power, and timing based on network conditions, client device states, and security requirements. This allows the system to optimize the balance between reliability and communication overhead by adjusting parameters rather than always using the maximum approach.
3Stability of the object's composition
If client devices remain connected after channel change, then connection stability is maintained, but security vulnerabilities arise due to missed deauthentication frames
Solution Approach 1:
The patent implements preliminary action by sending deauthentication frames in advance on multiple channels before the actual channel change is complete or before the client device might go into sleep mode. This ensures that the deauthentication message is delivered before the connection state becomes unstable or vulnerable, preventing security issues while allowing smooth transition.
Solution Approach 2:
The system uses feedback mechanisms to monitor whether client devices have successfully received and processed deauthentication frames. Based on this feedback (e.g., acknowledgment frames or lack thereof), the system can determine whether additional deauthentication transmissions are needed on other channels, thereby dynamically maintaining security while preserving connection stability.
Data Source
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AI summary
Systems and methods can advantageously provide deauthentication/disassociation frames A method includes providing, by a first device, a disassociation frame or a deauthentication frame on a first primary control channel in response to an indication of a change from the first primary control channel to a second primary control channel, and receiving, by the first device, a data frame from a second network device on the first control primary channel, the second primary control channel or a secondary channel. The method also includes providing, by the first device, another disassociation frame or deauthentication frame on the first primary control channel, the second primary control channel and/or the secondary channel associated with the data frame.