Exact Secrecy Throughput Capacity Study in Mobile Ad Hoc Networks
Exact Secrecy Throughput Capacity Study in Mobile Ad Hoc Networks
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移动自组织网络的精确保密吞吐能力研究
DOI：
10.1016/j.adhoc.2018.01.012
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
Yulong Shen and Xiaohong Jiang
中科院分区：
文献类型：
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作者：
Xiaochen Li;Shuangrui Zhao;Yuanyu Zhang;Yulong Shen and Xiaohong Jiang
移动自组网(MANET)的保密吞吐能力(STC)性能研究对于支持其在安全敏感场景中的应用至关重要。尽管在MANET空时编码的标度律结果上做了大量工作，但对这类网络的准确的空时编码研究仍然是一个开放的问题。本文首次从物理层(PHY)安全的角度出发，研究了基于分组调度的小区划分移动自组网(MANET)的精确STC。本文首先提出了两种基于物理层安全技术的安全传输方案，即基于保密防护区的方案和基于协作干扰的方案。基于保密防护区的方案允许仅当发射机周围的保密防护区中不存在窃听者时才进行传输。基于协作干扰的方案利用非发射节点产生人工噪声来抑制同一小区中的窃听者，使得只有在传输范围内的所有窃听者都被抑制的情况下才能进行传输。然后在分析两种基本安全传输概率的基础上，推导出两种安全传输方案下相关网络的空时编码性能的精确解析表达式。最后，给出了大量的仿真和数值结果，证实了我们的理论分析，也说明了相关的移动自组网的空时编码性能。
The secrecy throughput capacity (STC) performance study of mobile ad hoc networks (MANETs) is critical for supporting their applications in security-sensitive scenarios. Despite much work on the scaling law results of MANET STC, theexactSTC study of such networks remains an open problem. This paper, for the first time, investigates the exact STC of a cell-partitioned MANET with group-based scheduling scheme from the physical layer (PHY) security perspective. We first propose two secure transmission schemes based on the PHY security technology, i.e., secrecy guard zone based and cooperative jamming based schemes. The secrecy guard zone based scheme allows transmissions to be conductedonly ifno eavesdroppers exist in the secrecy guard zone around transmitters. The cooperative jamming based scheme utilizes non-transmitting nodes to generate artificial noise to suppress eavesdroppers in the same cell, such that transmissions can be conductedonly ifall eavesdroppers in the transmission range are suppressed. We then derive exact analytical expressions for the STC performance of the concerned network under both secure transmission schemes based on the analysis of two basic secure transmission probabilities. Finally, extensive simulation and numerical results are provided to corroborate our theoretical analysis and also to illustrate the STC performance of the concerned MANET.