Local Breakout Base Station for Mobile Network Routing
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Solution Overview
Problem
Current cellular network solutions for local IP breakout services face issues with non-optimal user data routing, leading to increased transfer delays and longer round trip times, as user data must traverse through a centralized public mobile network gateway, limiting data transfer speed and mobility within the network.
Innovation Solution
Implementing a method that allows a mobile terminal to select a local IP connectivity point of attachment directly from a public mobile network cell or base station, enabling user access control and transferring user context data during handovers to maintain mobility within a local breakout service area, thereby optimizing data routing and reducing reliance on centralized gateways.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user data is routed through a centralized public mobile network gateway, then network control and security are maintained, but transfer delays increase and data transfer speed decreases
Solution Approach 1:
The network routing is segmented into two paths: a control plane path through the centralized gateway for signaling and authentication, and a user plane path locally at the base station for data transfer. This allows control functions to remain centralized while data routing is distributed, reducing transfer delays for user data.
Solution Approach 2:
The base station acts as an intermediary that receives user data locally and forwards it directly to the destination without requiring traversal through the centralized gateway. This intermediary function enables local breakout while maintaining gateway involvement for control purposes.
2Productivity
If a local IP breakout gateway is implemented at the base station, then data transfer speed increases, but device complexity and network architecture complexity increase
Solution Approach 1:
The base station is enhanced to perform multiple functions: traditional radio access control, user data routing, and local IP gateway functions. By making the base station multi-functional, the patent avoids adding separate dedicated gateway devices, thereby increasing data transfer speed without proportionally increasing device complexity.
Solution Approach 2:
The local IP gateway function is merged with the base station rather than being implemented as a separate entity. This consolidation allows the base station to provide both radio access and local data routing capabilities, simplifying the overall network architecture while enabling faster local data transfer.
3Adaptability or versatility
If local IP breakout service is provided, then mobility within local area is improved, but network registration and authentication complexity increases
Solution Approach 1:
User authentication and network registration are performed in advance through the centralized gateway before local data transfer begins. Once authenticated, the user can move freely within the local breakout area using the base station as gateway, eliminating the need for repeated authentication during mobility events.
Solution Approach 2:
The authentication and registration process is performed once and remains valid continuously as the user moves within the local breakout service area. The base station maintains the user's authenticated session and continues providing data routing services without requiring repeated authentication, ensuring continuous useful action.
Data Source
AI summary
In a radio system having at least one base station that is part of a public mobile network, at least one mobile terminal communicates with the at least one base station, a local breakout service network provides Internet protocol gateway services. A serving base station of a mobile terminal is configured to provide the local breakout service to the Internet protocol gateway while retaining user access control and a remote Internet protocol gateway of a packet core network of the public mobile network for the mobile terminal; to provide information on neighboring cells in which the local breakout service can continue; to make a handover decision based on measurement reports received from the mobile terminal; and to transfer user context data including local breakout service related information to a target base station during handover for providing mobility within the local breakout service area for the mobile terminal.