Wireless Service Levels Using Local Breakout and Dual Routing
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Solution Overview
Problem
Existing wireless communication systems face challenges in providing efficient and robust routing, especially when access terminals are far from the first hop router, leading to suboptimal routing and limited access to local services due to firewall restrictions, and there is a need for improved routing techniques.
Innovation Solution
Implementing local breakout by providing multiple IP points of presence for access terminals to access both local and core network services, with distinct mobility and session management functionalities at different nodes, and using packet-level service indicators to determine routing paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If packets are routed through a distant first hop router via protocol tunnel, then network security and centralized control are improved, but routing efficiency deteriorates and access to local services is limited
Solution Approach 1:
The patent segments the routing path into two distinct modes: triangular routing for core network services (maintaining security) and direct routing for local services (improving efficiency). The system divides packet handling based on destination, allowing simultaneous use of both routing modes without compromising overall security while enabling efficient local access.
Solution Approach 2:
The access point acts as an intermediary that intercepts packets and determines the appropriate routing mode. It examines packet destinations and selectively applies triangular routing or direct routing, serving as a mediator between security requirements and efficiency needs without requiring changes to the core network architecture.
2Device complexity
If single point of presence is used for protocol tunneling, then network management is simplified, but service versatility deteriorates due to inability to access local services
Solution Approach 1:
The system dynamically selects routing modes based on packet destination and service type. The access point adaptively switches between triangular routing and direct routing on a per-packet basis, enabling the network to respond to different service requirements without requiring multiple static access points or complex manual configuration.
Solution Approach 2:
The access point is designed with multi-functionality, serving both as a protocol tunnel endpoint for core network services and as a local breakout gateway for local services. This universal design allows a single access point to handle diverse service types without requiring separate infrastructure for each service type.
3Extent of automation
If triangular routing is enforced for all packets, then centralized control is maintained, but communication speed deteriorates due to suboptimal routing paths
Solution Approach 1:
The patent applies different routing qualities to different destinations: triangular routing is applied to core network services requiring centralized control, while direct routing is applied to local services requiring speed. This localized quality approach ensures that centralized control is maintained where needed without sacrificing speed where possible.
Solution Approach 2:
The system changes the routing parameter (path selection) based on packet destination and service type. By dynamically adjusting the routing parameter between two discrete options (triangular vs. direct routing), the system optimizes communication speed for local services while maintaining centralized control for core services.
Data Source
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AI summary
Local breakout is provided by one or more nodes (e.g., a local access point and/or a local gateway) in a wireless network to facilitate access to one or more local services. In conjunction with local breakout, multiple IP points of presence relating to different levels of service may be provided for an access point. For example, one point of presence may relate to a local service while another point of presence may relate to a core network service. IP point of presence may be identified for an over-the-air packet to indicate a termination point for the packet. Also, different mobility management functionality may be provided at different nodes in a system whereby mobility management for a given node may be provided by a different node for different types of traffic. Thus, an access terminal may support multiple NAS instances. In addition, different types of paging may be provided for different types of traffic. Furthermore, messages associated with one protocol may be carried over another protocol to reduce complexity in the system.