基于混合协作NOMA的安全MEC能耗优化

doi:10.12305/j.issn.1001-506X.2024.03.39

系统工程与电子技术 ›› 2024, Vol. 46 ›› Issue (3): 1116-1124.doi: 10.12305/j.issn.1001-506X.2024.03.39

基于混合协作NOMA的安全MEC能耗优化

余雪勇¹^,²^,*, 傅新程¹^,², 朱洪波¹^,²

1. 南京邮电大学江苏省无线通信重点实验室, 江苏南京 210003
2. 南京邮电大学教育部泛在网络健康服务系统工程研究中心, 江苏南京 210003

收稿日期:2022-11-30 出版日期:2024-02-29 发布日期:2024-03-08
通讯作者: 余雪勇
作者简介:余雪勇(1979—), 男, 副教授, 博士, 主要研究方向为物联网与无线通信、边缘计算
傅新程(1997—), 男, 硕士研究生, 主要研究方向为边缘计算、信息安全
朱洪波(1956—), 男, 教授, 博士, 主要研究方向为物联网、无线通信技术
基金资助:
江苏省重点研发计划(BE2020084-4);江苏省研究生科研与实践创新计划(SJCX21_0261)

Optimization of energy consumption with hybrid cooperative NOMA for secure MEC

Xueyong YU¹^,²^,*, Xincheng FU¹^,², Hongbo ZHU¹^,²

1. Jiangsu Key Laboratory of Wireless Communications, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
2. Engineering Research Center of Health Service System Based on Ubiquitous Wireless Networks, Ministry of Education, Nanjing University of Posts Telecommunications, Nanjing 210003, China

Received:2022-11-30 Online:2024-02-29 Published:2024-03-08
Contact: Xueyong YU

摘要/Abstract

摘要：

非正交多址接入(non-orthogonal multiple access, NOMA)技术的广泛应用改变了传统物理层安全对用户传输速率的限制, 在降低时延的同时会引起系统能耗增加。针对安全通信与降低能耗问题, 提出一种基于混合协作NOMA的安全边缘计算传输方法。该方法对每个用户数据处理过程设计了多时隙混合协作方案, 根据不同用户的信道条件分别设置卸载决策, 保证用户间公平, 并推导出系统保密中断概率的闭合表达式。然后以最小化系统能耗为目标, 采用基于块坐标下降的三步迭代优化算法求得最优卸载方案。仿真结果显示, 所提出的传输方法能在保证信息安全的条件下有效地减少系统能耗。

关键词: 非正交多址接入, 物理层安全, 移动边缘计算, 中断概率, 块坐标下降

Abstract:

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.

Key words: non-orthogonal multiple access (NOMA), physical layer security, mobile edge computing, outage probability, block coordinate descent

中图分类号:

TP929.5

余雪勇, 傅新程, 朱洪波. 基于混合协作NOMA的安全MEC能耗优化[J]. 系统工程与电子技术, 2024, 46(3): 1116-1124.

Xueyong YU, Xincheng FU, Hongbo ZHU. Optimization of energy consumption with hybrid cooperative NOMA for secure MEC[J]. Systems Engineering and Electronics, 2024, 46(3): 1116-1124.

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参数	数值	参数	数值
B/MHz	1	T/s	0.1
L_k/bit	2×10⁵	ε	0.1
σ_b²、σ_e²/dBm	-70	ξ_k	10^－28
c_k/(cycles/bit)	10³	l_k^max	1.6×10⁵
d_e,k/m	60	ω	4
d_b,k/m	100	ζ	0.01

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基于混合协作NOMA的安全MEC能耗优化

Optimization of energy consumption with hybrid cooperative NOMA for secure MEC

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