Local Routing Authorization for Mobile WiMAX Networks
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Solution Overview
Problem
Current mobile WiMAX networks face redundancy and unnecessary transmission delays due to overlapping transmission paths when service flows between mobile stations are routed through external networks, lacking effective authorization for local routing.
Innovation Solution
A method, apparatus, and system for local routing authorization that initiates requests to local routing policy entities for mobile stations to enable direct service flow transmission between them, ensuring authorization and reducing network load by bypassing redundant paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If service flow is transmitted through external network via Serving ASN-GW and Anchor ASN-GW, then network coverage and connectivity are improved, but transmission path redundancy and transmission delays increase
Solution Approach 1:
The patent segments the service flow transmission path by introducing local routing capability at the Serving ASN-GW level, separating the local transmission path from the external network path. This allows service flows to be handled locally when possible, reducing dependency on the full external network path while maintaining connectivity options.
Solution Approach 2:
The patent introduces a local routing authorization mechanism as an intermediary between the service flow and the external network. The Serving ASN-GW acts as a mediator that can authorize local routing requests, enabling direct transmission between MSs within the same ASN without forcing all traffic through the Anchor ASN-GW and external network.
2Extent of automation
If service flow is transmitted through external network via Anchor ASN-GW, then network management control is improved, but core network transmission load increases
Solution Approach 1:
The patent applies local quality by enabling different routing behaviors for different service flows based on local conditions. The Serving ASN-GW can authorize local routing for service flows between MSs in the same ASN, while maintaining external network routing for other cases, optimizing resource utilization locally rather than applying a uniform network-wide approach.
Solution Approach 2:
The patent implements partial action by allowing local routing authorization for only those service flows that benefit from local transmission. Not all service flows are routed locally - only those where the source and destination MSs are in the same ASN and local routing is authorized, reducing core network load without completely bypassing external network management.
3Productivity
If local routing is implemented for service flow transmission, then transmission efficiency is improved, but authorization mechanism complexity increases
Solution Approach 1:
The patent applies preliminary action by establishing local routing authorization policies in advance. The Serving ASN-GW pre-configures authorization rules that determine which service flows are eligible for local routing, so that when service flows need to be transmitted, the authorization decision can be made quickly based on pre-established criteria rather than complex real-time evaluation.
Data Source
AI summary
A method includes: respectively initiating a local routing authorization request to a first local routing policy entity and a second local routing policy entity according to service flow information of a first mobile station, so as to enable the first local routing policy entity to perform local routing authorization for the first mobile station and enable the second local routing policy entity to perform local routing authorization for the second mobile station; and when a local routing authorization result of the first mobile station and a local routing authorization result of the second mobile station are both success, transmitting, through local routing, a service flow corresponding to the service flow information of the first mobile station and a service flow corresponding to the service flow information of the second mobile station.