基于移动边缘计算的时延能耗最小化安全传输  

Delay and energy minimization for MEC-based secure communication

作　　者：任品毅[1] 许茜[1] REN Pinyi;XU Qian(School of Information and Communications Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]西安交通大学信息与通信工程学院,陕西西安710049

出　　处：《通信学报》2020年第11期52-63,共12页Journal on Communications

基　　金：国家自然科学基金资助项目(No.61941119)。

摘　　要：考虑物理层安全辅助的私密文件传输问题,提出了带有边缘计算服务器的智能基站作为中继协助完成文件压缩、传输与解压的安全传输方案。首先使用空间泊松点过程刻画多个潜在窃听者场景下的安全传输概率,然后构建两跳总安全传输概率约束下的时延及能耗最小化问题。通过一维搜索结合线性规划,得到了最优压缩与解压方案。仿真结果表明,给定安全概率约束下私密信息速率小的链路在传输前需要进行文件压缩,反之不需要压缩,可直接传输。Considering a physical-layer-security-aided confidential document transmission problem,a secure transmission strategy was proposed where the base station equipped with a mobile edge computing(MEC)server served as a relay to help compress,forward,and decompress.First,the Poisson point process was used to calculate the secure transmission probability for the scenario with multiple potential eavesdroppers.Then,a delay and energy minimization problem was formulated under a constraint on the two-hop secure transmission probability.The optimal compression and decompression scheme was obtained using the one-dimensional search combined with linear programming.Simulation results show that the document compression is necessary for the link with small achievable secrecy rate under a given secure transmission probability;otherwise,the document should be directly transmitted without compression.

关 键 词：移动边缘计算 物理层安全 安全传输概率 时延 能耗 

分 类 号：TN92[电子电信—通信与信息系统]