Resource Admission Control in NGN via Accurate Media Stream Addressing
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Solution Overview
Problem
In the Next Generation Network (NGN) architecture, the resource admission control process is ineffective due to the lack of valid media stream address information during IMS session establishment, leading to meaningless resource admission control before obtaining accurate address information.
Innovation Solution
A method where the Service-based Policy Decision Function (SPDF) sends an Admission Request message with current media stream address information to the Access-Resource and Admission Control Function (A-RACF) after configuring an IMS connection for the Core-Border Gateway Function (C-BGF), allowing the A-RACF to perform resource admission control based on accurate media stream address information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resource admission control is performed before obtaining media stream address information, then resource allocation can be performed early in the IMS session establishment process, but the resource admission control becomes meaningless due to lack of valid address information
Solution Approach 1:
The patent applies preliminary action by performing the IMS connection configuration and obtaining media stream address information before executing the resource admission control. The SPDF first configures the IMS connection for C-BGF, then acquires the media stream address information, and only after that performs the resource admission control with valid address information, ensuring both early resource allocation and effective control
Solution Approach 2:
The patent implements feedback by having the SPDF obtain media stream address information from the C-BGF after connection configuration, and then use this feedback information as the basis for performing resource admission control. This feedback loop ensures that resource admission control is performed with accurate and valid address information
Data Source
AI summary
A method for resource admission control process, an Access-Resource and Admission Control Function entity and a Service-based Policy Decision Function entity, wherein the method includes: sending an Admission Request message, which carries the current media stream address information, to an Access-Resource and Admission Control Function entity (A-RACF) in an originating home network from a Service-based Policy Decision Function entity (SPDF) when the SPDF successfully configures an IP Multimedia Subsystem (IMS) connection for a Core Border Gateway Function entity (C-BGF) in the originating home network; and performing a resource admission control process for a corresponding media stream by the A-RACF according to the received Admission Request message. With the method of the present invention, the resource admission control process performed by the A-RACF on the media stream may become meaningful.