A-RACF MAN Resource Control via RPCF and RCEF Modules
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Solution Overview
Problem
The existing RACS framework in NGN is limited to controlling two-layer access networks and cannot effectively manage the Quality of Service (QoS) requirements in metropolitan area networks (MAN), which are essential for supporting advanced application services.
Innovation Solution
The integration of a MAN Resource and Policy Control Function (RPCF) module within the Access-Resource Admission and Control Function (A-RACF) device, which interacts with a MAN Resource Control Enforcement Function (RCEF) module in the MAN network device to generate and enforce QoS policies, enabling control over the QoS in MAN environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the RACS framework is used to control access network resources, then QoS control for two-layer access networks is achieved, but control capability for MAN (metropolitan area network) resources is lost
Solution Approach 1:
The A-RACF device is enhanced to perform both traditional access network resource control and MAN resource control functions. The MAN RPCF module integrates with the existing A-RACF architecture, allowing a single device to handle multiple network types (access network and MAN) without requiring separate control systems, thus achieving multi-functionality and resolving the contradiction between expanded coverage and system complexity.
2Reliability
If the RACS framework is extended to support MAN control, then QoS control for MAN resources is achieved, but system complexity increases
Solution Approach 1:
The MAN RPCF module is nested within the existing A-RACF device structure, where the MAN resource control functionality is embedded as a sub-module of the broader access network control framework. This nesting approach allows MAN QoS control to be integrated into the existing reliable A-RACF system without creating a completely new complex structure, thus achieving QoS control capability while managing system complexity through hierarchical integration.
3Adaptability or versatility
If separate MAN control system is implemented, then MAN resource control independence is achieved, but system complexity and integration difficulty increase
Solution Approach 1:
The MAN resource control functionality is merged with the existing A-RACF device by adding the MAN RPCF module. Instead of implementing a completely separate MAN control system, the patent combines MAN control capabilities with the access network control device, allowing both control functions to operate within a unified system architecture. This merging approach achieves the necessary control independence for MAN resources while avoiding the complexity and integration difficulties of completely separate systems.
Data Source
AI summary
A metropolitan area network (MAN) resource control system, method and Access-Resource and Admission Control Function (A-RACF) device are disclosed, wherein, the A-RACF device comprises a MAN resource and policy control function (RPCF) module. The MAN network device comprises a MAN resource control enforcement function (RCEF) module. The system is connected via the MAN RPC module with the MAN RCEF module which needs to be controlled to control the QoS of the MAN resource. The MAN RPC module is used to make a MAN resource control strategy and generate the QoS policy. The MAN RCEF module is used to execute the QoS control according to the QoS policy sent by the A-RACF device.