Policy Server Network-Initiated Secondary Datalink Flows
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Solution Overview
Problem
Current Cellular Packet Data Network architectures lack standardized procedures for network-initiated secondary packet data service instances, leading to administrative and addressing issues when establishing connections to unattached mobile stations, which hinders the deployment of advanced services like IP Multimedia and online gaming requiring specific Quality-of-Service (QoS) handling.
Innovation Solution
Implementing a 'push model' where a higher-level network intelligence decides and initiates secondary packet data service instances with specific QoS attributes, using a policy server to manage network resources and create secondary packet data service instances on behalf of application servers, allowing for network-initiated connections with predetermined QoS levels based on parameters like time, access network conditions, and application requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If network-initiated procedures are implemented for unattached mobile stations, then network control and QoS management are improved, but administrative and addressing problems arise
Solution Approach 1:
The patent introduces a Policy Server as an intermediary component that mediates between the network and mobile stations. The Policy Server stores policy profiles containing QoS parameters and operational attributes, and automatically matches these profiles when secondary packet data service instances are requested. This intermediary eliminates the need for complex administrative procedures by automating the matching and instantiation process based on pre-configured policies, thereby resolving the contradiction between network control and administrative complexity.
2Adaptability or versatility
If client-side software is required to initiate secondary packet data service instances, then service flexibility is improved, but deployment complexity and security concerns increase
Solution Approach 1:
The patent implements a self-service mechanism where the network automatically initiates and configures secondary packet data service instances without requiring client-side software or user intervention. When a primary packet data service instance exists, the network can autonomously create additional service instances by retrieving appropriate policy profiles from the Policy Server and applying them automatically. This self-service approach maintains service flexibility while eliminating deployment complexity and security concerns associated with client-side software.
3Adaptability or versatility
If multiple packet data service instances with different QoS are created, then application-specific requirements are met, but network resource management complexity increases
Solution Approach 1:
The patent utilizes parameter changes by storing multiple policy profiles in the Policy Server, each containing different sets of QoS parameters and operational attributes. When a secondary packet data service instance is needed, the system retrieves a specific policy profile that matches the required service type (e.g., VoIP, video conferencing, online gaming) and applies its parameters automatically. This approach enables fine-grained QoS differentiation across multiple service instances while simplifying resource management complexity through automated parameter selection and application.
Data Source
AI summary
A method of creating a network-initiated secondary packet data service instance includes sending a content request for application data from a mobile station to an application function through an access network. The method further includes sending a request for a secondary packet data service instance from the application function to a policy function, and evaluating the request for a secondary packet data service instance and determining one or more operational attributes from the evaluation. The method also includes creating the secondary packet data service instance between the application function to the mobile station by arranging one or more network components as a function of the one or more operational attributes. The method further includes transmitting the application data from the application function to the mobile station via the secondary packet data service instance.