Wireless Transmission Security via Artificial Noise and Secret Keys
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Solution Overview
Problem
Current wireless communication systems face challenges in enhancing security, particularly in protecting data transmissions from eavesdropping, especially in complex and dynamic environments.
Innovation Solution
The method involves selecting transmission parameter configurations based on transmission events to transmit artificial noise (AN) with data, using secret keys to cancel AN at legitimate receivers, thereby protecting data transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If artificial noise is transmitted with data to protect data transmissions, then security is enhanced, but signal quality and reception reliability may deteriorate
Solution Approach 1:
The patent applies local quality by making the noise cancellation capability specific to the legitimate receiver through the use of secret keys. The artificial noise affects all receivers uniformly, but only the legitimate receiver with the correct secret key can locally cancel the noise and recover the signal quality, while other receivers continue to experience degraded signal quality due to the noise
Solution Approach 2:
The patent uses secret keys as an intermediary mechanism that enables the legitimate receiver to distinguish between useful signal and artificial noise. The secret key acts as a mediator that transforms the noisy received signal into a clean decoded signal by enabling the noise cancellation process, thereby resolving the contradiction between security enhancement and signal quality maintenance
2Adaptability or versatility
If transmission parameter configurations are selected based on transmission events, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamics by making transmission parameter configurations changeable based on transmission events. The system dynamically selects from multiple pre-defined configuration sets (each containing different parameters like artificial noise power, data power, pilot power) depending on the current transmission event type, allowing the system to adapt its security and performance characteristics to different operational scenarios
Solution Approach 2:
The patent applies preliminary action by pre-defining multiple transmission parameter configuration sets before actual data transmission occurs. Each configuration set is prepared in advance with specific parameter values optimized for different transmission events, so that during operation the system only needs to select from these pre-configured options rather than calculating parameters in real-time, thus managing complexity while maintaining adaptability
Data Source
AI summary
Certain aspects of the present disclosure provide a method for wireless communication, by a transmitter, generally including selecting one or more transmission parameter configurations, from a set of transmission parameter configurations associated with one or more transmission events and transmitting a signal, according to the selected one or more transmission parameter configurations, in order to protect data transmitted to a receiver.