# 6G Enabled Industrial Internet of Everything: Towards a Theoretical Framework
## 6 GIIoE Architectural Framework  
Based on the literature review standards, specifications, and reference architectures, (specifically) of 6G-enabled IIoE system is non-existent. Scholars are working diligently to develop 6G standards and specifications. We are of the opinion that global 6G standards and specification by the ITU (International Telecommunication Union) will emerge prior to the year 2030. 6G communication architecture should enable IIoE devices, sensors, machines to not only connect to the Internet but also to communicate with one another autonomously. The current literature describes several 6G and IoT/IoE architectures [(43; 44)] (p. 134010). In contrast to the 3 and 4-layers architectures nevertheless, there is no proposed global 6G and IIoE standard architecture yet and drawing from the authors' extensive experience in 5G-enabled IoT/IoE architecture design as well as from the literature review of relevant research work, we believe multiple layers are essential to capture the complexity of the 6 GIIoE system architecture. Hence, we have proposed and discussed below a simplified 5-layer 6 GIIoE modular architecture as shown in Figures 4 and 5:  
* The perception layer comprises the physical components: all sensors, devices, and machines. * The transmission layer includes the information communication. * The middleware layer consists of communication protocols, 6G, Wi-Fi, edge (cloud) computing and software to analyze data. * The application layer deals with IIoE intelligent applications. * The business layer defines the business model. The operating system (OS) is the virtual application platform that aggregates open innovations for various industrial applications and people (e.g., Apps can be developed using intelligence from the Digital Edge-Cloud on which it operates) and should serve as the 'operations center' for the public services domain. The Digital Edge-Cloud (DEC) [44] denotes the edge-cloud platform (with embedded hardware and software) that aggregates intelligence spanning multiple use cases, and more widely across IIoE applications, namely CIIW etc. that could benefit from composite information. We cite one use case example: smart cities with 6 GIIoE system. We propose significant pilot efforts around the globe that can be applied for Smart Cities with 6 GIIoE  
Figure 4: Five Layer 6 GIIoE Architectural Framework. Figure 5: 6 GIIoE System Architectural Framework. System. 'Realizing the vision of smart cities in the USA' initiatives can be focused on environmental aspects with underlying IoE technologies beyond Edge-Cloud-Analytics-Mobile (ECAM). Having a universal digital footprint for various IoE applications could help tap into the enormous benefits. A wireless communications infrastructure, such as 6G, is built on fiber-optic and/or Wi-Fi (6G-based) backbone network to serve the platform that moves massive data from devices/sensors/machines (DSM) for aggregation in the DEC. DSM infrastructure can be formed of existing physical infrastructure equipped with wired/wireless P2P, P2M and M2M devices/sensors/machines to enable detection and notification of events to the higher layers in the 6 GIIoE architecture. Our view is that ECAM (Edge/Cloud/Analytics/Mobility) technologies enable powering up the 'Digital Footprint' in the 6 GIIoE system architectural framework, as shown in the Figures 4 and 5, though the complexities of a large-scale CIIW deployment are yet to be understood. The major challenge would be in identifying scalable, cost-effective, and interoperable technology solutions to build the device/sensor/machine (DSM) infrastructure ensuring raw/filtered massive data flows through to the 'Digital Footprint'. Considerable R& D work needs to be pursued to actualize the operations of various connected intelligent industrial applications. Previously security involved a simplistic approach followed the layered architecture for the IoE. This ignores both the complexity of the 6 GIIoE system and the need to provide security functionality in different places and in different forms.