NOMA移动边缘计算网络的任务高安全卸载技术研究

To confront the explosively increasing demand of computing services, the next-generation wireless network will widely use computation task offloading techniques based on mobile edge computing since most mobile devices have finite computation capability. However, the wide application of computation offloading encounters three problems related to the security of the private data: 1) The open access to the spectrum of the edge computing severs and the unfairness resource allocation among mobile devices bring huge security risk to our tasks; 2) The mismatch among the wireless channel gain, the available computing resources and the communication security level become the bottleneck of offloading security; 3) The communication load coupling, the computational load coupling and the multi-cell interference results in new challenges to the design of secure offloading. In order to address these problems, by fully utilizing the NOMA (non-orthogonal multiple access) techniques, we will focus on investigating three techniques from the perspective of physical layer security, namely, 1) multi-task high secrecy offloading techniques for improving user fairness; 2) high secrecy offloading techniques for complex tasks based on multi-user cooperative computation; 3) high and robust secrecy offloading techniques for multi-cell networks. Based on the proposed techniques, we will construct a simulation platform for NOMA assisted mobile edge computing based on high secrecy offloading techniques. This project can provide strong key technical supports for promoting the secure and efficient processing of various content, services and applications, as well as the practical application of mobile edge computing into the next generation wireless network.

面对爆炸式增长的计算服务需求，因终端设备自身计算能力不足，下一代无线网络将广泛应用基于移动边缘计算架构的计算任务卸载技术。在此背景下，携带有私密信息的任务的安全卸载面临三大基本问题：1）频谱的开放接入和资源分配的不公平性给任务卸载带来极大安全隐患；2）无线信道增益、可用计算资源、通信安全层级之间的不匹配制约任务卸载安全性能；3）通信与计算负载耦合以及小区干扰给任务安全卸载带来全新挑战。针对上述三大问题，本项目拟从物理层安全的角度，充分利用NOMA（非正交多址接入）技术，重点研究：1）提高用户公平性的多任务高安全卸载技术；2）多用户协作计算的复杂任务高安全卸载技术；3）多小区网络的任务高鲁棒安全卸载技术。在此基础上，搭建NOMA移动边缘计算网络的高安全任务卸载技术仿真验证平台。为促进网络中各项内容、服务及应用的安全高效处理以及边缘计算技术在下一代无线网络的实际应用提供强有力的关键技术支撑。

面对爆炸式增长的计算服务需求，因终端设备自身计算能力不足，下一代无线网络将广泛应用基于移动边缘计算架构的计算任务卸载技术。在此背景下，携带有私密信息的任务的安全卸载面临三大基本问题：1）频谱的开放接入和资源分配的不公平性给任务卸载带来极大安全隐患；2）无线信道增益、可用计算资源、通信安全层级之间的不匹配制约任务卸载安全性能；3）通信与计算负载耦合以及小区干扰给任务安全卸载带来全新挑战。针对上述三大问题，本项目从物理层安全的角度，充分利用NOMA（非正交多址接入）技术，重点研究了：1）提高用户公平性的多任务高安全卸载技术；2）多用户协作计算的复杂任务高安全卸载技术；3）多小区网络的任务高鲁棒安全卸载技术。在此基础上，对NOMA移动边缘计算网络的高安全任务卸载技术进行了仿真验证。为促进网络中各项内容、服务及应用的安全高效处理以及边缘计算技术在下一代无线网络的实际应用提供了强有力的关键技术支撑。