Unified Resource Admission Control for Fixed and Mobile Networks
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Solution Overview
Problem
The existing resource admission and control systems face complexity in network construction and maintenance due to the need for two sets of bearer control layer entities for fixed and mobile access networks, making it difficult to implement unified resource control and charging.
Innovation Solution
A unified resource admission and control system that includes a policy decision function unit to identify the type of access network and select corresponding service logic for resource admission and control, using a combined SPDF and PCRF approach with a unified Rx+ interface, enabling seamless integration of fixed and mobile access networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two sets of bearer control layer entities are used for fixed and mobile access networks, then resource control and charging can be implemented separately for each access type, but network construction and maintenance complexity increases significantly
Solution Approach 1:
The patent merges the separate SPDF (Service-Based Policy Decision Function) and PCRF (Policy and Charging Rules Function) entities into a unified PCC (Policy and Charging Control) system. This consolidation integrates fixed and mobile access network control into a single framework, reducing the number of separate bearer control entities while maintaining the ability to handle different access types through a common interface and unified policy management mechanism.
Solution Approach 2:
The unified PCC system is designed to serve multiple access network types (fixed and mobile) through a single multi-functional entity. The system can dynamically adapt to different access types and apply appropriate policy control and charging rules based on the specific access network being used, eliminating the need for separate dedicated entities for each access type.
2Adaptability or versatility
If separate bearer control entities are deployed for different access networks, then specific policy control can be implemented for each access type, but unified resource control and charging become difficult to implement
Solution Approach 1:
The PCC system is designed as a universal control entity that can handle multiple access network types through a single framework. It maintains adaptability to different access types by implementing access-type-specific policy control logic within the unified system, allowing it to dynamically adjust its behavior based on whether the access is fixed or mobile while still providing unified resource control and charging management.
Solution Approach 2:
The unified PCC system acts as an intermediary between the application layer and the bearer control layer, mediating resource control and charging for different access types. It receives service requests from the application layer, determines the appropriate access network type, and applies the corresponding policy control and charging rules, thereby unifying resource control across different access networks while maintaining adaptability to specific access type requirements.
3Device complexity
If a unified interface for resource admission and control is implemented across different access networks, then network construction and maintenance is simplified, but the ability to implement access-specific control logic may be reduced
Solution Approach 1:
The unified interface provided by the PCC system is designed to be multi-functional, supporting both fixed and mobile access networks through a common interface while maintaining the capability to implement access-specific control logic. The system identifies the access network type through the unified interface and dynamically applies the appropriate service logic and policy control rules, thereby simplifying network construction and maintenance without sacrificing access-specific control capabilities.
Data Source
AI summary
System and method for resource admission and control is disclosed. The system for resource admission and control includes an interface unit for application function unit configured to receive service request sent from the application function unit; a policy decision function unit configured to identify the type of an access network according to the service request received by the interface unit for the application function unit and select corresponding service logic for resource admission and control according to the identified type of access network. According to the technical solutions, no matter the request for resource is made to a fixed access network defined in TISPAN, or to a wireless access network defined in the 3GPP, the policy decision function unit xPDF may identify the type of the access network and select corresponding service logic to perform resource admission and control. The xPDF conceals the details of the access network from the AF such that the solution for network construction can be simplified and the system maintenance may become simple and convenient.