| 引用本文: | 郭志民,田杨阳,张焕龙,等.面向电力巡检的MEC非正交共享传输方案研究[J].电力系统保护与控制,2022,50(16):140-146.[点击复制] |
| GUO Zhimin,TIAN Yangyang,ZHANG Huanlong,et al.A non-orthogonal share transmission scheme of mobile edge computing for power inspection[J].Power System Protection and Control,2022,50(16):140-146[点击复制] |
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| 摘要: |
| 为了解决电力巡检回传系统中视频传输占用带宽大、连接数量多、传输资源利用不充分等问题，针对多载波多用户上行传输网络，提出了一种基于移动边缘计算(Mobile Edge Computing, MEC)网络架构下分簇技术与非正交共享传输联合设计方案。考虑5G基站与客户终端设备(Customer Premise Equipment, CPE)通信链路的远近效应并将其CPE终端分簇来进行信息传输，从而提高CPE连接数量和频谱效率。为了消除簇间干扰，采用信号对齐技术，分别提出簇间最大信干噪比算法和簇间最小干扰泄露算法。为了消除簇内用户间干扰，采用了串行干扰消除技术。该方案使系统每个CPE都能达到最大的自由度，从而实现较高的系统和速率性能。仿真结果表明，所提方案相比于传统正交接入方案具有更高的系统和速率性能。 |
| 关键词: 电力巡检 移动边缘计算 非正交多址接入 信号对齐 系统和速率 |
| DOI：DOI: 10.19783/j.cnki.pspc.211377 |
| 投稿时间：2021-10-12修订日期：2021-11-28 |
| 基金项目:国家自然科学基金项目资助(61873246，61901418，62072416，62006213，62102373)；国家电网公司科技项目资助(5600-202046347A-0-0-00)“面向智能电网运维场景的视听觉主动感知与协同认知技术研究及应用” |
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| A non-orthogonal share transmission scheme of mobile edge computing for power inspection |
| GUO Zhimin,TIAN Yangyang,ZHANG Huanlong,LI Nuannuan,LIU Weihua,WANG Yanfeng,XU Jin |
| (1. State Grid Henan Electric Power Research Institute, Zhengzhou 450052, China;
2. Zhengzhou University of Light Industry, Zhengzhou 450000, China) |
| Abstract: |
| There are problems in power inspection of a transmission system e.g., large bandwidth requirement, massive terminal connection and inefficient transmission resource utilization. Thus a joint design scheme that combines clustering and non-orthogonal multiple access (NOMA) is proposed based on mobile edge computing (MEC). This is for a multi-carrier multi-user uplink access network. Considering the near-far effect between a 5G base station and customer premises equipment (CPE), the CPEs are divided into several clusters to transmit information, with an increased number of connected CPEs and spectral efficiency. In order to mitigate inter-cluster interference, signal alignment is used, and a maximum signal to inter-cluster interference and noise ratio (Max-SICINR) algorithm and a minimum inter-cluster interference leakage (Min-ICIL) algorithm are proposed. To mitigate the inter-user interference in the same cluster, a successive interference cancellation is used. With the proposed scheme, each CPE can achieve the maximum degree of freedom, which leads to improved system sum-rate performance. Simulation results demonstrate that the proposed scheme has a higher system sum-rate performance than the conventional orthogonal multiple access scheme.
The work is supported by the National Natural Science Foundation of China (No. 61873246, No. 61901418, No. 62072416, No. 62006213, and No. 62102373). |
| Key words: power inspection mobile edge computing non-orthogonal multiple access signal alignment system sum-rate performance |
