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arXiv 2402.03702cs.ITcs.NImath.IT
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隐私受限无线网络中的空间来源学习

On Learning Spatial Provenance in Privacy-Constrained Wireless Networks

Manish Bansal, Pramsu Srivastava, J. Harshan

AI总结:

针对车联万物网络中车辆隐私与路侧单元定位需求的冲突,提出基于布隆过滤器的空间来源框架,通过区域划分与参数优化,实现低开销下的近最优来源恢复。

摘要:

在涉及多跳通信的车联万物网络中,路侧单元通常旨在收集参与车辆的位置信息,以提供安全和网络诊断功能。虽然车辆通常使用全球定位系统进行导航,但出于隐私考虑,它们可能不愿与路侧单元共享精确的GPS坐标。因此,为了同时满足路侧单元的高定位需求以及车辆的隐私需求,我们提出了一种新颖的空间来源框架,其中每辆车在转发数据包时使用布隆过滤器嵌入其部分位置信息。在该框架中,路侧单元和车辆约定将覆盖区域划分为若干较小的区域,以便车辆可以通过布隆过滤器嵌入其所在区域的标识。鉴于布隆过滤器的概率特性,我们推导了来源恢复中错误率的解析表达式,然后提出一个优化问题来选择底层参数。借助大量仿真结果,我们表明我们的方法在学习空间来源方面提供了接近最优的布隆过滤器参数。还讨论了通信开销、车辆空间隐私与来源恢复错误率之间一些有趣的权衡。

英文摘要:

In Vehicle-to-Everything networks that involve multi-hop communication, the Road Side Units (RSUs) typically aim to collect location information from the participating vehicles to provide security and network diagnostics features. While the vehicles commonly use the Global Positioning System (GPS) for navigation, they may refrain from sharing their precise GPS coordinates with the RSUs due to privacy concerns. Therefore, to jointly address the high localization requirements by the RSUs as well as the vehicles' privacy, we present a novel spatial-provenance framework wherein each vehicle uses Bloom filters to embed their partial location information when forwarding the packets. In this framework, the RSUs and the vehicles agree upon fragmenting the coverage area into several smaller regions so that the vehicles can embed the identity of their regions through Bloom filters. Given the probabilistic nature of Bloom filters, we derive an analytical expression on the error-rates in provenance recovery and then pose an optimization problem to choose the underlying parameters. With the help of extensive simulation results, we show that our method offers near-optimal Bloom filter parameters in learning spatial provenance. Some interesting trade-offs between the communication-overhead, spatial privacy of the vehicles and the error rates in provenance recovery are also discussed.

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