# Educational 5G Edge Computing: Framework and Experimental Study
## 3 5G Smart Campus System Architecture
### Dedicated Cloud Architecture for Smart Education  
As discussed in Section 2, many shortcomings of current MEC architectures prevent them from education scenarios. To solve the above problems, a novel eMEC architecture for intelligent education is proposed here, as shown in Figure 3.  
This architecture falls under the 3 GPP framework and also refers to the MEC definition in ETSI. In the proposed architecture, a new network element named educational multi-access edge computing (eMEC) is introduced between UPF and the data network (DN). In addition, the 3 GPP network is connected with a DN (data network) through N6. The DN can be a central cloud, edge cloud and IDC (Internet Data Center). The eMEC proposed in this paper can be connected with the existing network N6 interface, and the relevant communication interface is designed. It is a new network infrastructure that integrates universal access gateways (UGW) and IaaS (infrastructure as a service)-based MEP business platforms for direct deployment of educational applications. The edge cloud eMEC for the education industry contains four components: UGW, IaaS, the eMEP platform and educational applications on it. Among them, UGW, as a dedicated coordinator system, plays a key role in network management, wide area connection, user access control and network capability exposure. The UGW interconnects with UPF by communication interface N6 (Nx is the standard communication interface in 3 GPP, defined in 3 GPP ts23.501) [19]. By cooperating with eEMP, the functions of UGWbecome feasible in educational applications, and, in turn, UGW further enhances eMEP so that it can be managed locally by a campus administrator. eMEC mainly provides general network and computing resources, which is also an intelligent educational application for end users. In addition, the eMEC for the education industry can be deployed in the computer room of the campus without cybersecurity risk and puts the devices under full end-user control. The workflow of the proposed eMEC architecture is presented as follows: at first, terminals in the education industry are connected to the wireless network via the 5G base station (the base station is deployed on campus) to transmit collected educational data. Then, the data distribution gateway UPF receives data and offloads it to the universal access gateway UGW, which immediately routes the data to the locally deployed education edge cloud eMEP service platform. With the help of network slicing technology, the eMEC architecture can realize the isolation of public network data and education data and meet the SLA performance requirements (rate requirement and delay requirement) of education data transmission. The introduction of edge computing technology also provides high-speed, low-latency support for smart educational applications in the eMEC architecture. The combination of the above technologies and the eMEC architecture further empowers the upgrade of the information system in schools, accelerates the rapid development of smart education and ensures the implementation of the national smart education strategy. To summarize, the architecture shows a systematic view of the '\(1+1+1+N\)' model, which consists of both the proposed eMEC and the existing facilities and applications. Our contribution lies in the layer of the 'educational dedicated cloud', which takes over the upstream data for local edge processing or remote cloud computing. eMEC is our solution for the educational dedicated cloud. The main contribution of eMEC is two-fold:  
1. We propose a novel universal access gateway (UGW) providing a comprehensive software package including multi-tenant management, campus multi-standard network unified access authentication management, and wide-area interconnection management. To the best of our knowledge, there are no carrier-level gateways that simultaneously support the above functionalities due to the authority gap between the campus intranet and the backbone network. 2.