Policy-Based Roaming Control for Wireless Devices
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Solution Overview
Problem
Wireless communication devices often incur unnecessary roaming costs due to fluctuations in radio frequency conditions, which cause them to seek roaming services within the coverage area of their home network, leading to increased expenses.
Innovation Solution
A method and system for controlling roaming by identifying a network address and paging tracking area identifier during communication session initiation, determining a roaming authorization status, and transferring this status to the roaming wireless communication system to authorize or deny roaming based on geographic location and service agreements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If broad roaming agreements are used to allow wireless devices to roam anywhere on the roaming network, then service coverage and accessibility are improved, but unnecessary roaming costs increase when devices roam within home network coverage areas
Solution Approach 1:
The system implements feedback by continuously monitoring the wireless device's location through network address and paging tracking area identifier, comparing it against home network coverage areas, and dynamically authorizing or denying roaming access based on whether the device is actually outside home coverage, thereby eliminating unnecessary roaming charges while maintaining broad roaming agreements
Solution Approach 2:
The invention changes the parameter of roaming authorization from a static broad permission to a dynamic location-based authorization, using real-time processing of network address and tracking area identifier to determine whether roaming should be permitted, thus adapting roaming access to actual geographic conditions
2Reliability
If wireless devices automatically seek roaming services when RF conditions fluctuate, then communication service availability is improved, but unnecessary roaming activation occurs within home network coverage areas
Solution Approach 1:
The system performs preliminary location verification by processing the network address and paging tracking area identifier before authorizing roaming access, checking in advance whether the device is actually outside home network coverage, thereby preventing unnecessary roaming activation before it occurs
Solution Approach 2:
The invention introduces an intermediary authorization mechanism between the wireless device and the roaming network, using the policy node to mediate roaming requests by verifying location information against home network coverage areas, thus preventing spurious roaming activation while maintaining service availability
Data Source
AI summary
Systems, methods, and software for controlling roaming of wireless communication devices onto wireless communication networks are provided herein. In one example, method of operating a wireless communication network is provided. The method includes, during a communication session initiation process between the wireless communication device and the roaming wireless communication network, receiving a request for policy information for the wireless communication device. Responsive to the request for the policy information, the method includes identifying a network address of a roaming gateway serving the wireless communication device and a paging tracking area identifier for the wireless communication device in the roaming wireless communication network. The method includes processing the network address and the paging tracking area identifier to determine a roaming authorization status for the communication session, and transferring the roaming authorization status for delivery to the roaming wireless communication system.