Edge-Aware DNS Lookup for Mobility-Stable Edge Server Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing DNS systems for Edge server access in wireless networks fail to consider UE mobility, leading to improper operation of Edge applications due to time-limited IP addresses and inconsistent DNS configurations across different data connections.
Innovation Solution
Implementing an Edge-aware DNS lookup mechanism in UEs that utilizes location-based IP address resolution, allowing the wireless network to provide control information for optimal Edge server access, independent of TTL limitations and mobility changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If DNS is used to resolve IP addresses for Edge servers, then IP address resolution is provided, but the IP addresses are time-limited and do not account for UE mobility
Solution Approach 1:
The patent implements dynamic DNS configuration where the UE can switch between different DNS servers based on its mobility state and current data connection. The system dynamically updates DNS server addresses and IP addresses for Edge servers according to UE location changes, making the previously static DNS system adaptive to mobility requirements.
Solution Approach 2:
The system establishes feedback mechanisms where the UE reports its mobility status and data connection state to the network, and the network responds by providing appropriate DNS configuration updates. This closed-loop feedback ensures the DNS configuration remains optimal despite UE movement and network condition changes.
2Adaptability or versatility
If DNS request is transmitted outside operator network (e.g., through Wi-Fi), then Internet access is enabled, but different DNS configuration is used that may not identify the most appropriate Edge server
Solution Approach 1:
The patent applies different DNS configuration strategies based on the local conditions - specifically which data connection is being used. When the UE is connected through the operator's wireless network, the operator's DNS server is used to select optimal Edge servers. When connected through alternative networks like Wi-Fi, the system applies alternative DNS configuration approaches to maintain appropriate Edge server selection for each local context.
Solution Approach 2:
The system changes DNS configuration parameters (such as DNS server address and domain names) based on the active data connection type. The UE and network dynamically adjust DNS parameters according to whether the connection is through 3GPP wireless network, Wi-Fi, or other data networks, ensuring optimal Edge server selection for each network type.
3Ease of operation
If standard DNS configuration is used, then IP address resolution is provided, but Edge applications may not run properly due to TTL limitations and mobility changes
Solution Approach 1:
The patent extends the DNS system to serve multiple functions: it not only provides standard IP address resolution but also enables mobility-aware Edge server selection, maintains connectivity during UE movement, and adapts to different data connection types. This multi-functional DNS approach allows a single system to handle both traditional DNS tasks and specialized Edge computing requirements.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
Method for use in a User Equipment, UE, for obtaining connection to an Edge server, the method comprising: initiating establishment of a Protocol Data Unit, PDU, session with a wireless network; transmitting, to the wireless network during the establishment, a first message indicating UE support for Edge-aware Domain Name System, DNS, lookup; receiving, from the wireless network during the establishment, a second message comprising an address to a DNS server configured to provide an address to the Edge server.