Roaming Service Policy Control Using Local Subscription Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In a roaming scenario, managing campus services for a terminal device becomes challenging due to the lack of effective mechanisms for a visited network to manage subscription information located at a home location, leading to increased load on home network elements and delays in service access.
Innovation Solution
A communication method involving a first network element that obtains subscription and policy information from a second and third network element, respectively, to determine a policy decision result at the subscription location, reducing home network load and ensuring communication security by managing services locally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the home network element manages the campus service for a roaming terminal device, then communication security is ensured, but the load on the home network element increases and service access delay increases
Solution Approach 1:
The patent segments the service management function by introducing a visited network element that can independently manage campus services for roaming terminal devices. The home network element retains authority for public network services while the visited network element handles location-specific campus services, dividing the management burden and improving access efficiency without compromising security through maintained authorization verification.
Solution Approach 2:
The patent introduces an authorization verification mechanism as an intermediary between the home network element and the visited network element. The home network element provides authorization information that enables the visited network element to manage campus services independently, acting as a mediator that ensures security while allowing local management autonomy.
2Productivity
If the visited network element manages the campus service locally, then service access delay is reduced and load on home network element is reduced, but the complexity of the management mechanism increases
Solution Approach 1:
The patent applies local quality by enabling the visited network element to manage campus services locally based on location-specific information. The system tailors the management approach to the local context, allowing the visited network element to make decisions about campus service access without requiring constant communication with the home network element, thus improving efficiency while maintaining security through pre-established authorization.
3Reliability
If the home network element manages all services, then communication security is ensured, but the load on the home network element increases
Solution Approach 1:
The patent segments service management responsibilities between home and visited network elements. The home network element manages public network services and provides authorization information, while the visited network element manages location-specific campus services. This segmentation reduces the load on the home network element by distributing management tasks to the appropriate network element based on service type and location.
Data Source
AI summary
A communication method includes a first network element that obtains first information and second information, where the first information is from a second network element and includes subscription information and/or policy information of a first service, the second information is from a third network element and indicates that the first service supports being managed by the first network element, and the third network element is a home data storage network element of the terminal device. The first network element determines a policy decision result based on the first information and the second information, where the policy decision result is used by the terminal device to access the first service in a first region. The first network element and the second network element are network elements at a subscription location in which the terminal device subscribes to the first service.