Enhancing Privacy in LTE Paging System Using Physical Layer Identification
Enhancing Privacy in LTE Paging System Using Physical Layer Identification
复制标题
使用物理层识别增强 LTE 寻呼系统的隐私性
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
J. Baras
中科院分区：
文献类型：
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作者：
Tuan Ta;J. Baras
用户位置隐私是蜂窝网络中日益关注的问题。最近已经表明，GSM网络中的寻呼结构泄漏用户位置信息。在本文中，我们首先从理论上证明了LTE网络也具有同样的脆弱性。然后，我们提出了一种解决方案，利用一种新的信号处理技术，物理层识别。其思想是将用户的唯一标签嵌入到下行链路寻呼信号波形上，使得标签是隐蔽的和鲁棒的。我们表明，我们的方案不仅提高了用户的隐私，但也节省了系统带宽。
User location privacy is a growing concern in cellular networks. It has been recently shown that the paging architecture in GSM networks leaks user location information. In this paper, we first prove theoretically that LTE networks also have the same vulnerability. We then propose a solution making use of a novel signal processing technique, physical layer identification. The idea is to embed users’ unique tags onto the downlink paging signal waveforms so that the tags are stealthy and robust. We show that our scheme not only improves users’ privacy, but also saves system bandwidth.