Invisible Walls: Privacy-Preserving ISAC Empowered by Reconfigurable Intelligent Surfaces
Yinghui He (1), Long Fan (2), Lei Xie (2), Dusit Niyato (1), Chau Yuen (1), Jun Luo (1) ((1) Nanyang Technological University, (2) Nanjing University)

TL;DR
This paper introduces PrivISAC, a low-cost RIS-based method that enhances privacy in ISAC systems by randomizing configurations to mask sensitive information from eavesdroppers while maintaining legitimate communication and sensing performance.
Contribution
The paper proposes a novel RIS configuration strategy with randomized activation and a masking method, enabling privacy-preserving ISAC without high hardware complexity.
Findings
PrivISAC effectively masks sensing information from eavesdroppers.
It maintains high communication throughput and sensing accuracy.
Experimental results validate strong privacy protection with commodity devices.
Abstract
The environmental and target-related information inherently carried in wireless signals, such as channel state information (CSI), has brought increasing attention to integrated sensing and communication (ISAC). However, it also raises pressing concerns about privacy leakage through eavesdropping. While existing efforts have attempted to mitigate this issue, they either fail to account for the needs of legitimate communication and sensing users or rely on hardware with high complexity and cost. To overcome these limitations, we propose PrivISAC, a plug-and-play, low-cost solution that leverages RIS to protect user privacy while preserving ISAC performance. At the core of PrivISAC is a novel strategy in which each RIS row is assigned two distinct beamforming vectors, from which we deliberately construct a limited set of RIS configurations. During operation, exactly one configuration is…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsAdvanced Wireless Communication Technologies · Sparse and Compressive Sensing Techniques · Radar Systems and Signal Processing
