Base Station Fake Data Injection for Communication Pattern Obfuscation
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Solution Overview
Problem
Existing methods fail to effectively prevent the leakage of personal information from smartphone communications, as they can be bypassed or do not adequately conceal communication patterns, allowing attackers to infer sensitive information from traffic data.
Innovation Solution
A method involving a base station that generates and transmits fake communication data between terminals, using a fake communication server to create and manage fake communication data, which is then filtered and confirmed by a receiving base station, ensuring that normal communication patterns are obscured and personal information is protected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If encryption is applied to communication contents, then eavesdropping prevention is improved, but communication pattern information may still leak through metadata analysis
Solution Approach 1:
The patent creates fake communication data that copies the structure and metadata of real communication traffic. These fake data frames replicate patterns such as packet sizes, timing intervals, and protocol headers, allowing attackers to analyze communication patterns without accessing actual content. The fake data is generated to statistically resemble real traffic, making pattern analysis ineffective for inferring real communications.
Solution Approach 2:
The base station acts as an intermediary between terminals and the network. It injects fake communication data into the traffic flow and filters out real data before it reaches the network. This intermediary approach allows the base station to obfuscate communication patterns at the network edge, preventing pattern leakage while maintaining legitimate communication functionality.
2Object-affected harmful factors
If blocking applications are used to prevent unauthorized information requests, then personal information protection is improved, but attackers can bypass blocking through alternative communication ports or disguised communication
Solution Approach 1:
The patent converts the harmful ability of attackers to bypass blocking into a beneficial mechanism. By injecting fake communication data that mimics legitimate traffic patterns, the system makes bypassing detection difficult. The fake data creates statistical noise that obscures real communication patterns, turning the attacker's bypass capability into a feature that enhances obfuscation effectiveness.
Solution Approach 2:
The system changes multiple parameters of communication data simultaneously, including packet sizes, inter-arrival times, protocol versions, and header formats. By varying these parameters to match real traffic distributions, the fake data becomes indistinguishable from legitimate communication, making bypass detection unreliable.
3Loss of information
If fake communication data is injected to obscure patterns, then information leakage prevention is improved, but network performance and communication reliability may deteriorate
Solution Approach 1:
The system injects fake data only for specific communication sessions or during specific time windows rather than continuously. It applies partial obfuscation to the extent necessary to protect information, avoiding excessive fake data injection that would overwhelm network resources. The base station selectively applies fake data based on traffic analysis and security risk assessment.
Solution Approach 2:
The base station temporarily stores real communication data, processes it to generate appropriate fake data, then discards the real data while injecting the fake data into the network flow. This allows the system to recover from the temporary disruption caused by data processing and replacement, maintaining overall network efficiency while achieving information protection.
Data Source
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AI summary
A method for transmitting and receiving fake communication data and a base station performing the same are disclosed. The base station transmits the fake communication data based on a step of selecting targets to and from which the fake communication data are to be transmitted and received among terminals positioned in a set region, a step of controlling a communication amount depending on the selected targets, and a step of transferring the fake communication data to a corresponding terminal depending on a control result or receives the fake communication data through a step of receiving data from a terminal including a fake communication application, a step of confirming whether an identification value meaning fake communication is present in the data, and a step of filtering a traffic with the terminal in the case in which the identification value is present in the data.