Secure Cache-Aided Multi-Relay Networks in the Presence of Multiple Eavesdroppers
Secure Cache-Aided Multi-Relay Networks in the Presence of Multiple Eavesdroppers
复制标题
在存在多个窃听者的情况下确保缓存辅助多中继网络的安全
DOI：
10.1109/tcomm.2019.2935047
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发表时间：
2019-08
影响因子：
8.3
通讯作者：
Arumugam Nallanathan
中科院分区：
文献类型：
--
作者：
Junjuan Xia;Lisheng Fan;Wei Xu;Xianfu Lei;Xiang Chen;George K. Karagiannidis;Arumugam Nallanathan
在本文中，我们研究了在存在多个窃听者的情况下，缓存辅助的多中继通信网络的安全性，其中每个中继可以预先存储所请求的文件的一部分，以协助从源到目的地的安全数据传输。如果中继缓存了请求的文件，则可以直接将其发送到目的地;否则，使用传统的双跳数据传输。对于这两种情况，执行中继选择以辅助安全数据传输。我们分析了网络的保密性能，在这两种情况下的非串通和串通窃听，并获得了封闭形式的平均保密中断概率（SOP）的表达式，以及高主窃听比（MER）的渐近表达式。通过最小化网络SOP，我们进一步优化该高速缓存的位置，提出了一种基于随机采样的缓存学习（SacLe）策略，它可以并行实现，从而大大减少了实现延迟。数值和仿真结果验证了所提出的分析，并表明缓存策略通过影响中继节点的缓存分集增益和信号协作增益对网络保密性能有显著影响。所提出的SacLe策略被证明能够实现由蛮力（BF）算法获得的最佳性能。
In this paper, we investigate the security of a cache-aided multi-relay communication network in the presence of multiple eavesdroppers, where each relay can pre-store a part of the requested files in order to assist secure data transmission from source to destination. If the relays have cached the requested file, then they can directly send it to the destination; otherwise, traditional dual-hop data transmission is used. For both cases, relay selection is performed to assist the secure data transmission. We analyze the network secrecy performance in both scenarios of non-colluding and colluding eavesdroppers, and obtain a closed-form expression for the average secrecy outage probability (SOP), as well as an asymptotic expression for the high main-to-eavesdropper ratio (MER). Through minimizing the network SOP, we further optimize the cache placement by proposing a stochastic sampling based cache learning (SacLe) strategy, which can be implemented in parallel and thus reduces the implementation latency substantially. Numerical and simulation results are finally presented to verify the proposed analysis, and show that the caching strategy has a significant impact on the network secrecy performance through affecting the caching diversity gain and signal cooperation gain at the relays. The proposed SacLe strategy is shown to be able to achieve the optimal performance obtained by the brute force (BF) algorithm.
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影响因子：
6.8
作者：
Li Sun;Hongbin Xu
通讯作者：
Li Sun;Hongbin Xu
DOI：
10.1109/iswcs.2014.6933484
发表时间：
2014-10
期刊：
2014 11th International Symposium on Wireless Communications Systems (ISWCS)
影响因子：
--
作者：
A. Sengupta;Saidhiraj Amuru;R. Tandon;R. Buehrer;T. Clancy
通讯作者：
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影响因子：
6.8
作者：
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通讯作者：
Quanzhong Li;J. Qin
影响因子：
6.8
作者：
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通讯作者：
Liang Xiao;Donghua Jiang;Dongjin Xu;Hongzi Zhu;Yanyong Zhang;H. V. Poor
影响因子：
11.2
作者：
Nan Zhao;Xiaonan Liu;F. Yu;Ming Li;Victor C. M. Leung
通讯作者：
Nan Zhao;Xiaonan Liu;F. Yu;Ming Li;Victor C. M. Leung