Dynamic Local Gateway Selection via DNS Query
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Solution Overview
Problem
Current gateway selection methods in non-EPC networks fail to dynamically select a local gateway co-located with or near a home node, especially when the home node's IP address changes, leading to inefficiencies and increased bandwidth consumption due to reliance on pre-configured IP addresses and static DNS systems.
Innovation Solution
A dynamic method using a domain name system query to select a local gateway associated with a home node, where the access control node sends a request to a domain name system server to obtain the IP address of the local gateway, allowing for dynamic IP address management and selection even when the home node's IP address changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pre-configured IP addresses and static DNS systems are used for gateway selection, then device complexity is reduced and ease of operation is improved, but adaptability deteriorates when home node IP addresses change
Solution Approach 1:
The patent implements dynamic gateway selection by enabling the DNS system to resolve gateway addresses in real-time based on current home node IP addresses, transforming the static gateway selection mechanism into a dynamic one that automatically adapts when IP addresses change
Solution Approach 2:
The system establishes a feedback mechanism where the access control node queries the DNS system for gateway addresses, and the DNS system dynamically resolves addresses based on current home node IP information, creating a closed-loop system that automatically responds to IP address changes
2Loss of energy
If pre-configured IP addresses are used for gateway selection, then device complexity is reduced, but bandwidth consumption increases due to inefficient routing
Solution Approach 1:
The system enables self-service by allowing the DNS system to automatically resolve gateway addresses based on current home node IP addresses without manual reconfiguration, and the access control node automatically queries and uses the resolved addresses, eliminating the need for manual intervention while optimizing bandwidth usage
3Productivity
If static DNS systems are used, then ease of operation is improved, but processing overhead increases when IP addresses change
Solution Approach 1:
The patent transforms the static DNS resolution process into a dynamic one where the DNS system can resolve gateway addresses on-demand based on current home node IP addresses, improving gateway selection efficiency while managing the complexity through automated processes
Data Source
AI summary
A method in a access control node for selecting of a local gateway co-located with or near a home node is provided. The access control node receives (201) a connectivity request from a user equipment. The user equipment requests a local or remote connection to the home node. The access control node obtains (202) an access point name of the home node. The access control node selects the local gateway co-located with or near the home node by the action of sending (203) a domain name system query to a home node gateway associated with the home node, by addressing a domain name system server. The query comprises a request for an IP address of the local gateway that is associated with the obtained access point name. The access control node selects the local gateway co-located with or near the home node by the further action of receiving (204) a response from the domain name system server. The response comprising the requested IP address of the local gateway.