Beamforming Array Puncturing for Eavesdropping-Resistant Transmission
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Solution Overview
Problem
Wireless communication systems face challenges in protecting cryptographically unprotected transmissions from eavesdropping, particularly in 5G networks, where techniques are needed to safeguard messages against potential interception and interference.
Innovation Solution
Implementing array puncturing by selectively turning off transmit array elements to induce phase distortion in unintended directions, using beamforming weights configured to manage interference and protect against eavesdropping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If array puncturing is used to protect transmissions from eavesdropping by turning off transmit array elements, then security against eavesdropping is improved, but interference to unintended receivers increases
Solution Approach 1:
The patent applies local quality by selectively turning off specific transmit array elements based on the spatial location of the intended receiver. Beamforming weights are configured to zero out particular array elements, creating localized transmission patterns that direct energy toward the intended receiver while avoiding areas where unintended receivers are located. This spatially selective approach protects against eavesdropping in certain directions while minimizing interference to unintended receivers in other directions.
Solution Approach 2:
The patent segments the transmit array into multiple independent elements, each可控 through individual beamforming weights. By dividing the array into separable elements and selectively deactivating specific segments (elements), the system can create directional transmission patterns that concentrate energy toward the intended receiver while creating nulls in directions where unintended receivers are present, thus reducing interference.
2Reliability
If beamforming weights are configured to turn off transmit array elements for security, then eavesdropping protection is enhanced, but transmission efficiency decreases
Solution Approach 1:
The patent applies partial action by turning off only specific transmit array elements rather than disabling the entire array or excessive number of elements. This selective approach provides sufficient security protection against eavesdropping while maintaining transmission efficiency by keeping the majority of array elements active for data transmission.
3Reliability
If array puncturing is implemented to safeguard messages, then security against interception is improved, but device complexity increases
Solution Approach 1:
The patent applies self-service by having the transmitting device automatically determine and configure beamforming weights based on the spatial location of the intended receiver. The system autonomously identifies which array elements to deactivate and calculates appropriate beamforming weights without requiring manual configuration or complex external control systems, thus reducing overall device complexity while maintaining security.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances security by reducing the effectiveness of eavesdropping attempts while minimizing interference with unintended receivers, ensuring secure transmission of messages.
Implementation Method 1
transmitting a plurality of electromagnetic signals to the receiving device
Implementation Method 2
determining a plurality of beamforming weights for transmitting a portion of the message toward a direction of the receiving device
Data Source
AI summary
Systems and techniques are provided for wireless communications. For example, a process can include, obtaining a message for transmission to a receiving device, determining a plurality of beamforming weights for transmitting a portion of the message toward a direction of the receiving device. A number of beamforming weights is equal to a number of transmit array elements. Each beamforming weight corresponds to a respective transmit array element. A beamforming weight is configured to turn off a transmit array element during transmission of the portion of the message. The process can include outputting an array puncturing notification indicative of transmission of the portion of the message by the plurality of transmit array elements with the transmit array element corresponding to the beamforming weight turned off and transmitting the portion of the message by the plurality of transmit array elements with the transmit array element corresponding to the beamforming weight turned off.