Secure offloading method of computing task of mobile edge computing system based on hybrid NOMA

Abstract

The invention discloses a secure offloading method of a computing task of a mobile edge computing system based on hybrid NOMA. In the presence of a malicious eavesdropper, secure offloading and computing services are provided for two users through a ground base station equipped with a mobile edge computing server. In the system, the user with strict delay requirements offloads the computing task to the base station in a NOMA manner, while the user with relatively loose delay requirements offloads the computing task in a hybrid NOMA manner, the ground base station executes the corresponding computing task through the mobile edge computing server, and meanwhile the computing and offloading of the users are prevented from being eavesdropped by using the physical layer security technology. The secrecy performance of the system can be evaluated by a security interruption probability. By adoption of the secure offloading method disclosed by the invention, while the fast processing of the computing tasks of the users is ensured, the spectrum and energy utilization rates of the system are improved, the risk of malicious eavesdropping in a task offloading process is reduced, and the overall quality of service of the system is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to an anti-eavesdropping transmission method in the field of hybrid NOMA-based mobile edge computing. Background technique [0002] Non-orthogonal Multiple Access (NOMA) is considered to be a very important technology to solve key problems in the fifth generation network, and it is different from Orthogonal Multiple Access (NOMA) which relies on orthogonal resource allocation ( OMA) technology is different. NOMA performs non-orthogonal resource allocation in the power domain or codeword domain. Therefore, it can provide services for multiple users on the same frequency-time resource, which can meet the requirements of the next-generation network system for high spectral efficiency, The need for large-scale connectivity and ultra-low transmission latency. Mobile edge computing has also attracted great attention in the next generation of wireless networks. ...

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: Aiming at the deficiencies of the existing technology, the present invention proposes a method for safely offloading computing tasks based on a hybrid NOMA mobile edge computing system, which can effectively solve the problem of energy efficiency and energy efficiency of the existing mobile edge computing system in the scenario of two users. Unbalanced delay and security cannot be effectively guaranteed

Images