Gateway DNS Server Assignment for IPv6-Only Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing systems face challenges in efficiently allocating user device parameters, particularly DNS servers, based on Internet Protocol version capabilities, leading to potential signal breaks and increased complexity due to the need for new Access Point Names (APNs) and unnecessary DNS64 synthesizing for dual-stack devices.
Innovation Solution
Assigning different DNS servers or instances based on user device capabilities, such as IPv4-only, IPv6-only, or dual-stack, during authentication, eliminating the need for new APNs and avoiding DNS64 synthesizing, which can impair IPv4 traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single DNS server is assigned to all user devices regardless of IP version capability, then device compatibility is improved, but communication reliability deteriorates due to potential signal breaks for IPv6-only devices
Solution Approach 1:
The patent segments the DNS server resource into multiple instances (first DNS server for IPv4/dual-stack devices, second DNS server for IPv6-only devices). This segmentation allows each DNS server instance to be optimized for specific IP version requirements, preventing signal breaks for IPv6-only devices while maintaining compatibility with other device types.
2Reliability
If new APNs are configured for IPv6-only devices, then communication reliability is improved, but device complexity increases due to additional configuration requirements
Solution Approach 1:
The patent makes the existing APN configuration universal by making IP version capability detection and conditional DNS server assignment at the network gateway level. This allows the same APN to serve multiple device types (IPv4-only, IPv6-only, dual-stack) without requiring separate APN configurations, thereby reducing device complexity while maintaining communication reliability.
3Adaptability or versatility
If DNS64 synthesizing is performed for dual-stack devices, then IPv4 traffic compatibility is improved, but network performance deteriorates due to unnecessary translation overhead
Solution Approach 1:
The patent performs preliminary action by detecting the user device's IP version capability during the authentication phase and proactively assigning the appropriate DNS server instance before any data transmission occurs. This preliminary classification prevents unnecessary DNS64 synthesizing for dual-stack devices, thereby maintaining IPv4 traffic compatibility while avoiding translation overhead that would degrade network performance.
Data Source
AI summary
Methods and systems are provided for facilitating routing of data to a DNS server for a user device based on the IP version capability of the user device. During a session set up for the user device in a wireless communications network, a first DNS server is allocated to the user device. The gateway identifies an IP version with which the user device is capable of communicating. If the user device is capable of communicating in the wireless communications network using IPv6 only, it is determined, by the gateway, that data associated with the user device is to be rerouted to a second DNS server. If the user device is not capable of communicating in the wireless communications network using IPv6 only, data associated with the user device continues to be routed through the first DNS server in the current session.