Optimization of energy consumption with hybrid cooperative NOMA for secure MEC
The extensive application of non-orthogonal multiple access(NOMA)technology has changed the limitations of traditional physical layer security on user transmission rates,increasing system energy consumption while reducing time delay.For the problem of secure communication and energy consumption reduction,a secure edge computing transmission method is proposed based on hybrid collaborative NOMA.This method designs a multi-slot hybrid collaboration scheme for each user's data processing,and sets respective offloading decisions based on the information channel conditions of different users,so as to ensure fairness among users,with closed expressions for the system's secrecy outage probability derived.After that,in a bid to minimize system energy consumption,a three-step iterative optimization algorithm based on block coordinate descent is employed to obtain the optimal unloading scheme.The simulation results demonstrate that the proposed solutions can effectively reduce system energy consumption while ensuring information security.
万方数据
维普
