Virtual Distributed Unit Network Connection Validation via DHCP
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Solution Overview
Problem
In virtual radio access networks (vRAN), unconfigured virtual distributed units (vDU) require manual validation of network connections, leading to inefficiencies in resource usage and increased human and transportation costs due to potential incorrect connections or inoperable cables, which are only discovered after the technician has left the site.
Innovation Solution
Implementing a device, such as a vDU or a DHCP server, that validates network connections by identifying interfaces, generating DHCP requests with site-specific data, and broadcasting these requests to connected components, allowing the DHCP server to determine connection validity and inform the technician of any issues in real-time, thereby preventing unnecessary site visits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual connection validation is performed without automated validation, then device complexity is reduced, but loss of time increases due to technician return trips and resource consumption increases due to repeated site visits
Solution Approach 1:
The system performs connection validation before the technician completes the site visit. The validation process is initiated during the connection setup phase, allowing potential issues to be detected while the technician is still on-site and can immediately correct them, preventing wasted travel time for re-visits
Solution Approach 2:
The system provides real-time feedback to the technician about connection validity through the user equipment. This feedback loop allows the technician to know immediately whether connections are correct or need correction, eliminating the delay of returning to the site to discover connection issues
2Productivity
If automated DHCP validation is implemented, then productivity is improved, but device complexity increases due to additional validation mechanisms
Solution Approach 1:
The system uses the existing DHCP infrastructure to perform self-validation of connections. The vDU or DHCP server automatically validates connections using standard DHCP request-response mechanisms, eliminating the need for separate complex validation hardware while improving productivity
Solution Approach 2:
The DHCP server performs multiple functions: it provides standard IP address assignment and simultaneously validates network connections. This multi-functionality approach uses existing infrastructure to achieve both configuration and validation tasks without adding dedicated validation complexity
3Reliability
If connection validation is performed in real-time, then reliability is improved, but use of energy increases due to continuous validation processes
Solution Approach 1:
The system performs validation periodically at key milestones during the connection setup process rather than continuously. Validation occurs after connection establishment and before technician departure, providing reliable verification while minimizing energy consumption by keeping the validation process intermittent rather than continuous
Data Source
AI summary
A device may identify network interfaces of the device and may create a list of the network interfaces of the device. The device may receive a cell site name associated with the device and may generate dynamic host configuration protocol (DHCP) requests with a DHCP option that includes data identifying the cell site name and the network interfaces of the list. The device may broadcast the DHCP requests to one or more components that are connected, via connections, to the network interfaces, and may cause, based on broadcasting the DHCP requests to the one or more components, a user equipment to receive an indication of whether the connections to the network interfaces are valid.