Physical layer security-aware routing and performance tradeoffs in ad hoc networks
Physical layer security-aware routing and performance tradeoffs in ad hoc networks
复制标题
自组织网络中物理层安全感知路由和性能权衡
DOI：
10.1016/j.comnet.2017.05.012
复制
发表时间：
2017
影响因子：
5.6
通讯作者：
Shiratori Norio
中科院分区：
文献类型：
--
作者：
Xu Yang;Liu Jia;Shen Yulong;Jiang Xiaohong;Shiratori Norio
物理层安全在adhoc网络中的应用近年来引起了学术界的广泛关注。然而，现有的研究主要集中在单跳和两跳网络的情况下，在通信服务质量（QoS）的下降所造成的提高安全性方面的价格在很大程度上是没有调查。作为解决这些问题的一个步骤，本文探讨了物理层的安全感知路由和性能权衡在多跳ad hoc网络。具体来说，对于任何给定的端到端路径，我们首先推导出其连接中断概率（COP）和保密中断概率（SOP）的封闭形式，这分别作为通信QoS和传输安全的性能指标。基于封闭形式的表达式，我们然后研究了安全QoS权衡，以最小化COP（分别）。SOP）以该SOP为条件（分别为COP）是有保障的。通过对给定路径的分析，我们进一步提出了一种分布式的路由算法，该算法可以实现任意一对源节点和目的节点的最优性能折衷。最后，仿真和数值结果验证了我们的理论分析的效率，以及说明的安全QoS权衡和路由性能。
The application of physical layer security in ad hoc networks has attracted considerable academic attention recently. However, the available studies mainly focus on the single-hop and two-hop network scenarios, and the price in terms of degradation of communication quality of service (QoS) caused by improving security is largely uninvestigated. As a step to address these issues, this paper explores the physical layer security-aware routing and performance tradeoffs in a multi-hop ad hoc network. Specifically, for any given end-to-end path we first derive its connection outage probability (COP) and secrecy outage probability (SOP) in closed-form, which serve as the performance metrics of communication QoS and transmission security, respectively. Based on the closed-form expressions, we then study the security-QoS tradeoffs to minimize COP (resp. SOP) conditioned on that SOP (resp. COP) is guaranteed. With the help of analysis of a given path, we further propose the routing algorithms which can achieve the optimal performance tradeoffs for any pair of source and destination nodes in a distributed manner. Finally, simulation and numerical results are presented to validate the efficiency of our theoretical analysis, as well as to illustrate the security-QoS tradeoffs and the routing performance.