Software Defined Radio Counter-Intelligence Signal Multiplexing
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Solution Overview
Problem
Existing communication devices lack the capability to transmit or receive counter-intelligence signals concurrently with other communication signals, particularly in scenarios where security threats need to be mitigated, such as with terrorist suspects using wireless telephones.
Innovation Solution
A software defined radio with a controller subsystem and memory for storing operating mode records, allowing it to reconfigure operations to transmit or receive counter-intelligence signals using unused information transfer capacity, including jamming, spoofing, or eavesdropping signals, while maintaining communication with other devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a communication device transmits only standard communication signals, then communication reliability is maintained, but security against terrorist communication is compromised
Solution Approach 1:
The patent combines standard communication signals with counter-intelligence signals into a single transmission channel. The counter-intelligence signal is embedded within or alongside the legitimate communication signal, allowing the same radio frequency resource to serve dual purposes: maintaining normal communication while simultaneously detecting or disrupting terrorist communication attempts.
Solution Approach 2:
The communication device is designed to perform multiple functions simultaneously: it acts as both a standard communication device and a counter-intelligence device. The same hardware infrastructure (antenna, transmitter, receiver) is used for both legitimate communication and security monitoring, eliminating the need for separate dedicated security equipment.
2Adaptability or versatility
If a software defined radio is configured to communicate with multiple devices, then communication versatility is improved, but the ability to implement counter-intelligence signals is limited
Solution Approach 1:
The software defined radio dynamically changes transmission parameters such as frequency, modulation type, and signal characteristics based on the communication mode. When counter-intelligence operation is required, the system modifies these parameters to generate appropriate counter-intelligence signals while maintaining the ability to switch back to standard communication modes as needed.
Solution Approach 2:
The system employs dynamic reconfiguration of the radio's operating parameters through software control. The controller subsystem can real-time adjust the radio's behavior to switch between standard communication modes and counter-intelligence modes, allowing flexible adaptation to different operational requirements without hardware changes.
3Object-affected harmful factors
If counter-intelligence signals are transmitted separately from communication signals, then security effectiveness is improved, but information transfer capacity is reduced
Solution Approach 1:
The counter-intelligence signal is merged with the communication signal in the same frequency channel. This could involve time-division multiplexing where counter-intelligence pulses are inserted between communication data, or frequency-division multiplexing where a portion of the spectrum is allocated for counter-intelligence while the rest carries communication data, thereby utilizing the available bandwidth efficiently.
Solution Approach 2:
The system maintains continuous communication operation while simultaneously performing counter-intelligence functions. Rather than interrupting communication to send counter-intelligence signals, the system overlays or interleaves these functions, ensuring that communication capacity is continuously utilized while security monitoring occurs without interruption.
Data Source
AI summary
According to one embodiment, a radio has a memory for the storage of a number of records. Each record has a number of operating parameters that are used by a controller subsystem to control the radio's operation. The controller subsystem is operable to communicate with a first communication device using a first electro-magnetic signal while communicating with a second communication device using a second electro-magnetic signal configured according to one of the records. The first electro-magnetic signal uses a portion of the information transfer capacity of the radio and is devoid of a counter-intelligence signal. The second electro-magnetic signal comprises a counter-intelligence signal that is operable to eavesdrop or disrupt communication of the second communication device.