Multi-Antenna Directional Transmission Parameter Security
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Solution Overview
Problem
The reliability of communication systems using multi-antenna arrangements is compromised due to the vulnerability of directional transmission parameter determination to manipulation, leading to reduced transmission capacity and susceptibility to denial of service attacks.
Innovation Solution
Implementing a method that uses a subset of directional transmission parameters dependent on communication partners, with cryptographically protected pilot signals to determine and authenticate these parameters, ensuring secure and robust communication by limiting the use of directional transmission parameters to permissible sets stored in a whitelist.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If directional transmission parameters are determined adaptively using pilot signals, then transmission efficiency is improved, but vulnerability to manipulation attacks increases
Solution Approach 1:
The patent pre-defines multiple directional transmission parameter sets corresponding to different spatial directions before actual communication occurs. During communication, the system only selects from these pre-defined parameter sets rather than determining parameters adaptively in real-time. This preliminary preparation eliminates the vulnerability to manipulation attacks while maintaining transmission efficiency, as the pre-defined parameter sets are stored securely and selected based on predetermined criteria rather than real-time measurements that could be manipulated.
2Adaptability or versatility
If all directional transmission parameters are permitted for communication, then adaptability is improved, but security against attacks deteriorates
Solution Approach 1:
The patent segments the complete set of directional transmission parameters into multiple subsets, where each subset corresponds to a specific spatial direction or communication scenario. Instead of permitting all parameters for any communication, the system restricts each communication to only the parameter subset appropriate for its specific direction. This segmentation maintains adaptability across different directions while enhancing security, as manipulation attacks would require compromising multiple segmented parameter sets rather than a single comprehensive set.
Solution Approach 2:
The patent applies different security restrictions to different directional transmission parameter sets based on their specific spatial characteristics and communication requirements. Each parameter set has locally optimized security properties tailored to its specific direction, rather than applying a uniform restriction to all parameters. This local quality approach ensures that each directional communication uses only the parameters necessary for its specific purpose, maintaining adaptability while reducing the attack surface for each individual communication channel.
Data Source
AI summary
Various embodiments of the teachings herein include methods for communicating with two or more communication partners using a multi-antenna arrangement designed for directional transmission. An example method includes: operating the multi-antenna arrangement using directional transmission parameters; limiting the directional transmission for parameters a particular communication partner to a subset of the directional transmission parameters, the subset depending on the particular communication partner; and determining the subset by transmitting a cryptographically protected pilot signal from the communication partner.