Dynamic Service Placement in 6G Multi-Cloud Scenarios

A network application approach towards 5G and beyond critical communications use cases

“…To spearhead deployment of Network Application-based developments for the PPDR vertical specifically, 5G-EPICENTRE has implemented the high-level experimentation infrastructure depicted in Figure 1. Four independent (i.e., characterized by different 5G standalone implementation and technologies) testbed facilities are federated under a typical Karmada control plane architecture (Federation layer, depicted in yellow) (Tabatabaei et al, 2023), each accommodating a K8s-based management architecture Margetis et al (2022), to orchestrate and manage deployment and operation of containerized PPDR applications. A centralized, cloud-native experimentation platform is deployed on top of this federation, enabling access to each of the underlying testbeds' resources Arampatzis et al (2021).…”

“…Harnessing the maturity of micro-services deployment solutions, such as Kubernetes (K8s) for the management and orchestration (MANO) of CNFs, benefits can be gained, among others, in Network Application service deployment time (Margetis et al, 2022). In addition, resource fragmentation is addressed through a federation of multiple K8sbased experimentation facilities via multi-cluster container deployments, enabled by Karmada (Karmada, 2023) K8s management and federation tools (Tabatabaei et al, 2023). This way, different Network Applications can be deployed and run concurrently without compromises.…”

“…Within 5G-EPICENTRE, such a testbed federation solution is being realized as a K8s-based NFV orchestrator (NFVO), which manages and provides access to service resources in each federated experimentation facility (Tabatabaei et al, 2023). In turn, it provides multi-cluster K8s orchestration across different domains, thus allowing multi-cluster testbed federation, hence making it look as a single testbed from the point of view of the user deploying its services.…”

“…Among the aforementioned projects, 5G-EPICENTRE (www. 5gepicentre.eu) envisioned a dedicated and federated 5G PPDR experimentation facility, bringing together four heterogeneous 5G testbeds with the aim of aggregating their computational resources and making them available through a single point of access (Tabatabaei et al, 2023), for what has been a traditionally challenging vertical to develop for. The project embraced an Experimentation-as-a-Service (EaaS) approach (Kalogiros et al, 2019;Midoglu et al, 2021) from the very beginning, realizing a conceptual cloud-native framework for how such an online aggregator for 5G PPDR experiment ordering would be architected (Arampatzis et al, 2021); accumulating evidence on Kubernetes-based management and orchestration to support experiment deployment (Margetis et al, 2022); and demonstration of thorough management of 5G Quality of Service (QoS) Identifiers (5QIs) for PPDR applications by leveraging the project's Network Application development paradigm (Cordeiro et al, 2023).…”