Bjoern Riemer developed and maintained core network automation and documentation for the 6G-SANDBOX/6G-Library, focusing on reproducible 5G core deployments and robust RAN integration. He engineered VM-based provisioning frameworks and Kubernetes workflows using Ansible, Terraform, and YAML, enabling scalable, modular testbeds. Bjoern addressed network stability by refining IP management, routing, and firewall configurations, and improved deployment flexibility with configurable installation toggles. He enhanced onboarding and collaboration through detailed Markdown documentation and visual aids, while implementing security hardening in Linux-based environments. His work demonstrated depth in infrastructure as code, system administration, and technical writing, resulting in more reliable, maintainable deployments.
June 2025: Delivered documentation and stability improvements for the 6G-Library (6G-SANDBOX/6G-Library). Implemented Open5G documentation and visual aids enhancements across Berlin RAN and Open5Gcore; introduced deployment-critical configurables (testbed_sim for SIM secrets and an optional SQL dump parameter for UDM) and added illustrative README images. Implemented security and descriptor hardening by disabling ICMP redirects from UPF in open5gcore_vm and open5gs_vm and removing default descriptor values to prevent misconfigurations. Result: clearer onboarding, more robust deployments, and improved network stability across testbeds.
June 2025: Delivered documentation and stability improvements for the 6G-Library (6G-SANDBOX/6G-Library). Implemented Open5G documentation and visual aids enhancements across Berlin RAN and Open5Gcore; introduced deployment-critical configurables (testbed_sim for SIM secrets and an optional SQL dump parameter for UDM) and added illustrative README images. Implemented security and descriptor hardening by disabling ICMP redirects from UPF in open5gcore_vm and open5gs_vm and removing default descriptor values to prevent misconfigurations. Result: clearer onboarding, more robust deployments, and improved network stability across testbeds.
Month: 2025-05 — Focused delivery on Open5Gcore documentation and deployment configuration enhancements within the 6G-Library. Key update: expanded README to include detailed component purpose, maintainers, capabilities, dependencies, and deployment variables; updated the trial network (TN) example and adjusted README headings to reflect the updated setup. No major bugs fixed this month.
Month: 2025-05 — Focused delivery on Open5Gcore documentation and deployment configuration enhancements within the 6G-Library. Key update: expanded README to include detailed component purpose, maintainers, capabilities, dependencies, and deployment variables; updated the trial network (TN) example and adjusted README headings to reflect the updated setup. No major bugs fixed this month.
April 2025 — 6G-Library monthly summary: Delivered a configurable Open5GS VM WEB-UI installation toggle to improve deployment flexibility and reduce unnecessary UI provisioning. Implemented a new boolean parameter one_open5gs_vm_install_webui and updated the installation workflow to conditionally execute the WEB-UI setup script, enabling modular deployments and faster provisioning.
April 2025 — 6G-Library monthly summary: Delivered a configurable Open5GS VM WEB-UI installation toggle to improve deployment flexibility and reduce unnecessary UI provisioning. Implemented a new boolean parameter one_open5gs_vm_install_webui and updated the installation workflow to conditionally execute the WEB-UI setup script, enabling modular deployments and faster provisioning.
March 2025 focused on upgrading the core network components in the 6G-Library to stable 0.4.0, delivering routing management enhancements and firewall configuration improvements. Completed upgrade of berlin_ran, open5gs_vm, and open5gcore_vm, strengthening component integration and overall core stability. The changes lay the groundwork for improved performance and reliability in the 6G core stack and future feature delivery.
March 2025 focused on upgrading the core network components in the 6G-Library to stable 0.4.0, delivering routing management enhancements and firewall configuration improvements. Completed upgrade of berlin_ran, open5gs_vm, and open5gcore_vm, strengthening component integration and overall core stability. The changes lay the groundwork for improved performance and reliability in the 6G core stack and future feature delivery.
February 2025 — 6G-Library: Stability improvements centered on Open5GS networking. Key bug fix: removed hardcoded IP from ogstun, eliminating UE IP conflicts with SMF-managed addresses. Commit b9f4ba3459dc21a81262916c0976ef4074a425da; changelogs updated. No new features delivered; improvements reduce service disruption and improve uptime. Technologies demonstrated: Open5GS, ogstun interface, IP management, hotfix processes, changelog maintenance.
February 2025 — 6G-Library: Stability improvements centered on Open5GS networking. Key bug fix: removed hardcoded IP from ogstun, eliminating UE IP conflicts with SMF-managed addresses. Commit b9f4ba3459dc21a81262916c0976ef4074a425da; changelogs updated. No new features delivered; improvements reduce service disruption and improve uptime. Technologies demonstrated: Open5GS, ogstun interface, IP management, hotfix processes, changelog maintenance.
December 2024 monthly summary for 6G-Library focused on delivering end-to-end 5G core and RAN integration in a VM-based environment, enabling scalable testing and improved stability. Key features delivered include Open5GCore VM deployment with UERANSIM integration and a web-based management UI, MTU fixes, and bastion routing improvements; Open5GS Kubernetes provisioning with one_open5gs_ue_count and Helm template iteration for scalable UE testing; and Berlin RAN integration to connect physical RAN equipment with the 5G core via Route Manager, YAML-based configuration, Ansible playbooks, and reporting templates. Major bug fixes were addressed to stabilize the platform (hotfixes for Open5GCore + UERANSIM, gnbseachlist, and UE-route on bastion), significantly improving reliability and usability. Overall, the month delivered a reproducible, scalable 5G core-to-RAN workflow, reducing setup time and enabling more robust testing and demonstrations. Technologies/skills demonstrated include virtualization/orchestration (Open5GCore VM), Kubernetes and Helm templating, Ansible and YAML configurations, Route Manager, MTU tuning, webCLI, and UERANSIM integration.
December 2024 monthly summary for 6G-Library focused on delivering end-to-end 5G core and RAN integration in a VM-based environment, enabling scalable testing and improved stability. Key features delivered include Open5GCore VM deployment with UERANSIM integration and a web-based management UI, MTU fixes, and bastion routing improvements; Open5GS Kubernetes provisioning with one_open5gs_ue_count and Helm template iteration for scalable UE testing; and Berlin RAN integration to connect physical RAN equipment with the 5G core via Route Manager, YAML-based configuration, Ansible playbooks, and reporting templates. Major bug fixes were addressed to stabilize the platform (hotfixes for Open5GCore + UERANSIM, gnbseachlist, and UE-route on bastion), significantly improving reliability and usability. Overall, the month delivered a reproducible, scalable 5G core-to-RAN workflow, reducing setup time and enabling more robust testing and demonstrations. Technologies/skills demonstrated include virtualization/orchestration (Open5GCore VM), Kubernetes and Helm templating, Ansible and YAML configurations, Route Manager, MTU tuning, webCLI, and UERANSIM integration.
November 2024 performance summary for 6G-SANDBOX/6G-Library focused on automating VM-based 5G core provisioning and ensuring accurate network reporting. Delivered an Open5GS VM Deployment Framework and fixed a critical VM result reporting bug, enabling reproducible, observable deployments and reliable networking data.
November 2024 performance summary for 6G-SANDBOX/6G-Library focused on automating VM-based 5G core provisioning and ensuring accurate network reporting. Delivered an Open5GS VM Deployment Framework and fixed a critical VM result reporting bug, enabling reproducible, observable deployments and reliable networking data.
Overview of all repositories you've contributed to across your timeline