Mobile Gateway SD-WAN Overlay for Distributed Mobile Connectivity
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Solution Overview
Problem
Conventional mobile networks rely on centralized anchor points for traffic ingress and egress, which can be costly and unreliable, especially with the use of MPLS links that are often oversubscribed and unreliable over the Internet.
Innovation Solution
Implementing a software-defined wide-area network (SD-WAN) overlay with a mobile gateway and SD-WAN controller to establish dynamic and cost-effective connectivity for mobile devices, providing quality of service and route optimization through a distributed network architecture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MPLS links are used for wide area network connectivity, then network reliability and traffic routing capability are improved, but cost increases and network oversubscription occurs
Solution Approach 1:
The patent introduces an SD-WAN overlay network as an intermediary layer between mobile devices and the core network. This overlay uses Internet Protocol (IP) routing instead of expensive MPLS links, acting as a mediator that provides reliable connectivity through intelligent routing and traffic management while reducing dependency on costly dedicated network infrastructure
Solution Approach 2:
The patent creates a virtual copy of the network connectivity function through software-defined networking. Instead of relying on physical MPLS links, the system implements a virtual network overlay that replicates the routing and connectivity functions using standard IP networks, thereby reducing hardware dependency and cost while maintaining reliability through software-based traffic management
2Device complexity
If centralized anchor points are used for mobility management, then network control and traffic routing are simplified, but cost increases and single points of failure are created
Solution Approach 1:
The patent segments the centralized anchor point functionality into distributed network functions. The SD-WAN overlay distributes routing and traffic management across multiple network nodes rather than concentrating them in a single anchor point. This segmentation maintains control simplicity through centralized SD-WAN controller management while improving reliability through distributed execution and redundancy
Solution Approach 2:
The patent implements dynamic routing and traffic management through the SD-WAN overlay, which can adaptively route traffic around failures and optimize paths in real-time. This dynamic approach replaces static centralized anchor points with flexible, software-defined routing that maintains simplicity through automated control while enhancing reliability through adaptive failure recovery
3Ease of manufacture
If static connectivity solutions are implemented, then network deployment is simplified, but adaptability to changing network conditions deteriorates
Solution Approach 1:
The patent implements dynamic connectivity through the SD-WAN overlay, which continuously monitors network conditions and adapts routing decisions in real-time. The system maintains deployment simplicity by using standardized IP networks and software-defined configuration, while achieving adaptability through automated path selection, traffic optimization, and dynamic failure recovery mechanisms
Data Source
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Figure 1B~1C
Figure 2
AI summary
Methods, systems, and computer readable media for providing mobile device connectivity are disclosed. A system includes a mobile gateway implemented on one or more processors. The mobile gateway includes an on-premises telecommunications network core configured for establishing mobile data sessions for mobile user devices and enabling communication between the mobile user devices through the on-premises telecommunications network core. The mobile gateway includes a software-defined wide-area network (SD-WAN) controller configured for establishing an SD-WAN overlay network for connecting the mobile user devices to an external telecommunications network.