Secure Wireless Ranging via Channel Reciprocity Verification
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Solution Overview
Problem
Existing wireless communication systems face challenges in securing ranging communications against eavesdropping and hardware-based attacks, which can lead to tampering and security breaches.
Innovation Solution
Implementing secure ranging wireless communication techniques that involve exchanging multiple packets with random sequence fields, performing channel estimation and consistency checks, using cost functions for security verification, and verifying channel reciprocity between devices to detect and prevent tampering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional wireless communication protocols are used for ranging, then device compatibility and ease of operation are maintained, but security against eavesdropping and hardware-based attacks is insufficient
Solution Approach 1:
The patent segments the ranging communication process into distinct phases: initial packet exchange with random sequence fields, channel estimation phase, and verification phase. Each phase has specific security checks, allowing comprehensive security without requiring complete protocol redesign. The segmentation enables targeted security enhancements while maintaining compatibility with existing wireless communication frameworks.
Solution Approach 2:
The patent implements preliminary security actions by exchanging random sequence fields and performing channel estimation before the actual ranging measurement. These preliminary steps establish security credentials and channel characteristics that are used to verify subsequent communications, preventing attacks before they can compromise the ranging process.
2Reliability
If multiple security checks are performed on ranging packets, then detection of tampering is improved, but processing time and computational complexity increase
Solution Approach 1:
The patent applies different verification methods to different parts of the ranging packet based on their security requirements. Random sequence fields undergo statistical consistency checks, while channel estimation data undergoes physical plausibility verification. This localized approach ensures comprehensive tampering detection without uniformly applying computationally intensive checks to all packet elements.
Solution Approach 2:
The patent replaces complex cryptographic verification mechanisms with physics-based channel reciprocity checks. By utilizing the inherent physical properties of wireless propagation channels, the system achieves high security without requiring heavy computational resources for cryptographic operations, thereby reducing processing time.
3Reliability
If channel reciprocity verification is implemented, then security against hardware impersonation is enhanced, but measurement precision requirements increase
Solution Approach 1:
The patent implements partial channel reciprocity verification by checking only critical channel characteristics rather than requiring complete channel state matching. This approach provides sufficient security against hardware impersonation while being robust to normal channel variations and estimation errors, balancing security requirements with measurement precision limitations.
Data Source
AI summary
This disclosure relates to techniques for performing secure ranging wireless communication. A first wireless device may receive a ranging packet from a second wireless device in a wireless manner. The ranging packet may include a first random sequence portion and a second random sequence portion. The first wireless device may perform one or more channel and noise estimations for the ranging packet. The first wireless device may perform one or more security checks for the ranging packet based on any or all of the first random sequence portion, the second random sequence portion, or the channel and noise estimation(s).