SBA Redirect Server Mapping for Resource Relocation
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Solution Overview
Problem
The service-based architecture in 5G wireless communication networks faces challenges in maintaining resource reachability when the location of a resource or service changes, particularly when the producer NF instance managing the resource is decommissioned.
Innovation Solution
A redirect server is introduced to facilitate continued reachability by intercepting requests targeting the old location of a resource or service and redirecting them to the new location, using a mapping table to map old to new locations, and leveraging a reachability controller to configure the redirect server for redirection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the producer NF instance is decommissioned to improve network efficiency and resource utilization, then network productivity is improved, but resource reachability deteriorates because consumers can no longer access the resource at the old location
Solution Approach 1:
A redirect server is introduced as an intermediary component between consumers and the decommissioned producer NF instance. The redirect server maintains a mapping table that stores the relationship between old and new resource locations, intercepting consumer requests targeting the old location and redirecting them to the new location, thereby preserving resource reachability while allowing the producer NF instance to be decommissioned
Solution Approach 2:
Before the producer NF instance is decommissioned, the redirect server is pre-configured with the mapping table containing the old and new resource location information. This preliminary setup ensures that when the decommissioning occurs, consumers can seamlessly access the resource through the redirect server without experiencing service interruption or loss of reachability
2Reliability
If a redirect server is introduced to maintain resource reachability after relocation, then resource reachability is preserved, but device complexity increases due to additional network components and configuration requirements
Solution Approach 1:
The redirect server serves as a dedicated intermediary that handles all redirection logic centrally. By concentrating the redirection functionality in a single component with a simple mapping table, the system avoids the need for complex distributed redirection mechanisms, thereby minimizing overall system complexity while maintaining resource reachability
Solution Approach 2:
The redirect server maintains a simplified copy of the resource location mapping information in its mapping table. This copy contains only the essential old-to-new location relationships needed for redirection, without requiring the full complexity of the original resource management system, thus reducing the complexity burden on the redirect server while preserving reachability
Data Source
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AI summary
A redirect server is configured in a service-based architecture, SBA, domain of a wireless communication network. The redirect server may receive configuration signaling indicating that a location of a resource or service in the SBA domain has changed from an old location to a new location. The redirect server receives, from a requestor in the SBA domain, a request that targets the old location of the resource or service in the SBA domain. The redirect, responsive to the request, transmits, from the redirect server to the requestor, a response that redirects the requestor to the new location of the resource or service in the SBA domain.