Gateway Control Plane DNS Translation for Co-located Edge Gateways
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Solution Overview
Problem
Current DNS systems in wireless communication networks do not optimize the selection of Access Gateway User Planes (AGW-U) and External Gateway User Planes (EGW-U) and fail to efficiently identify and select co-located or edge AGW-U and EGW-U, leading to suboptimal performance in serving user devices.
Innovation Solution
A Gateway Control Plane (GW-C) is introduced that uses a Domain Name System (DNS) to translate Access Point (AP) IDs and network data into AGW-U and EGW-U IDs, with the GW-C receiving DNS responses to transfer control signals, ensuring co-located AGW-U and EGW-U serve user equipment (UE) by optimizing their selection based on geographic proximity and network services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the DNS translates TAI into AGW-U ID and EGW-U ID using conventional methods, then the user device can be served, but the selection of AGW-U and EGW-U is not optimized and co-located or edge gateways are not efficiently identified
Solution Approach 1:
The system pre-establishes mappings between TAI values and co-located gateway pairs (AGW-U and EGW-U) in a DNS database before actual service delivery. When a user device enters a tracking area, the DNS can immediately resolve the optimal gateway pair without real-time optimization calculations, enabling both efficient selection and reliable service delivery from the outset
Solution Approach 2:
The invention introduces an intermediary DNS optimization layer between the control plane and user plane gateways. This DNS system acts as a mediator that receives TAI information, queries pre-configured gateway mappings, and returns optimized AGW-U and EGW-U ID pairs. This intermediary enables efficient gateway selection while ensuring reliable service delivery through pre-validated gateway combinations
2Loss of time
If conventional DNS translation is used, then gateway IDs are obtained, but co-located edge AGW-U and EGW-U are not selected leading to increased latency
Solution Approach 1:
The system pre-configures and stores optimal gateway pair mappings in the DNS database before runtime operations. Each TAI value is pre-associated with the nearest co-located AGW-U and EGW-U pair, eliminating the need for complex real-time latency calculations during actual service delivery, thus reducing time loss while maintaining selection simplicity
Solution Approach 2:
The invention creates a simplified copy or representation of the complex gateway selection problem in the DNS database. Instead of performing complex latency optimization calculations during service delivery, the system uses pre-computed gateway ID mappings that replicate the optimal selection outcome, making the selection process simple while achieving low-latency performance
Data Source
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AI summary
In a wireless communication network (100, 1000), a Gateway Control Plane (GW-C) (140, 640, 641, 642, 940) receives a session request for a User Equipment (UE) (101, 102, 103, 601, 1001) from an Access Point (AP) (111, 112, 113, 611, 1011, 1012) that serves the UE. The GW-C transfers a DNS request having an AP ID and network data. A Domain Name System (DNS) (150, 650, 651) translates the AP ID and the network data into an AGW-U ID and an EGW-U ID for co-located GW-Us. The GW-C receives a DNS response and transfers GW control signals using the AGW-U ID and the EGW-U ID. The co-located AGW-U (121, 122, 123) and EGW-U (131, 132, 133) serve the UE responsive to the control signals. In some examples, the selected AGW-U and EGW-U are co-located at the network edge near the AP.