Dynamic Data Attachment Point Selection in Wireless Networks
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Solution Overview
Problem
In wireless communication networks, efficiently updating the data attachment point (DAP) for mobile devices as they move across different geographic locations is challenging, leading to inefficient use of network resources and potential disruptions in data communication.
Innovation Solution
A method and apparatus that determine and compare the resource costs of various access points (APs) within a wireless access network to identify the most efficient DAP, allowing the serving AP to be updated or maintained based on cost metrics relative to an Internet Protocol (IP) gateway, thereby optimizing network resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the DAP is maintained at a fixed location while the mobile device moves to a different geographic location, then the network configuration remains stable, but network resource efficiency deteriorates and data communication efficiency worsens
Solution Approach 1:
The patent implements dynamic DAP selection by allowing the DAP to change based on the mobile device's current serving AP. The system continuously monitors the mobile device's location through serving AP changes and automatically updates the DAP to match the new geographic location, transforming the static DAP configuration into a dynamic one that adapts to mobile device movement.
Solution Approach 2:
The system uses feedback from the mobile device's serving AP to trigger DAP updates. When the network detects that the mobile device's serving AP has changed, it automatically initiates a DAP update process, creating a feedback loop that ensures the DAP remains optimized for the mobile device's current location without requiring manual intervention.
2Productivity
If the DAP is updated frequently to track mobile device movement, then data communication efficiency improves, but network complexity and resource overhead increase
Solution Approach 1:
The system performs preliminary DAP selection by pre-establishing the DAP at the mobile device's initial serving AP. This preliminary configuration allows data communication to begin immediately without requiring real-time DAP updates as the device moves, reducing the frequency of DAP changes while maintaining efficiency for the initial connection phase.
Solution Approach 2:
The system enables self-service DAP management by automatically detecting serving AP changes and triggering DAP updates without requiring manual network intervention. This automation reduces network management complexity while ensuring DAP optimization, as the system self-adjusts based on observed mobile device location changes.
3Reliability
If centralized entity control is used for DAP updates, then network coordination is improved, but response time and scalability deteriorate
Solution Approach 1:
The patent segments the DAP update function from centralized network control and assigns it to individual access points. Each AP independently manages its own DAP status and can autonomously update the DAP when detecting mobile device location changes, eliminating the need for centralized coordination and significantly reducing update response time.
Solution Approach 2:
The system uses the serving AP as an intermediary between the mobile device and the DAP management function. The serving AP monitors mobile device location and automatically triggers DAP updates when necessary, acting as a local mediator that eliminates the need for direct centralized entity involvement in each DAP update decision, thereby reducing response time while maintaining coordination.
Data Source
AI summary
An algorithm for improving efficiency of data attachment points (DAPs) in a wireless access network (AN) is provided herein. By way of example, the algorithm can identify a serving access point (APs) coupling an access terminal (AT) to the wireless AN. A cost metric for the serving AP can be determined with respect to at least one data network access gateway (AGW) of the wireless AN. The cost metric can be compared with a similar cost metric of a current or default DAP assigned to the AT. If the cost metric of the serving AP is lower than the cost metric of the current/default DAP, the DAP can be re-assigned to the serving AP, minimizing wireless AN resource costs associated with the DAP.