Local Packet Gateways for Select IP Traffic Offload
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Centralized gateway architectures in wireless communication networks are inefficient, prone to disruptions, and vulnerable to security threats due to their large, centralized nature, which affects packet network connectivity and service customization for mobile users.
Innovation Solution
Implementing selected Internet Protocol traffic offload (SIPTO) through local packet gateways (L-GWs) that provide an interface to the Internet or data networks, allowing for flexible eligibility determination based on user equipment (UE) capabilities, subscription status, and legal requirements, enabling efficient management and maintenance of packet network connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If centralized gateway architecture is used, then network management is simplified, but reliability decreases due to single point of failure
Solution Approach 1:
The patent divides the centralized gateway function into multiple distributed packet network gateways (L-GWs) deployed at different network locations. Each L-GW independently handles packet routing for local user equipment, eliminating the single point of failure while maintaining simplified management through standardized interfaces and protocols.
2Reliability
If local packet gateways are deployed, then network resilience improves, but device complexity increases
Solution Approach 1:
The patent designs L-GWs with universal functionality to handle multiple tasks: packet routing, user equipment authentication, service customization, and handover management. This multi-functionality reduces the need for specialized components at each distributed gateway, thereby controlling complexity while achieving network resilience through redundancy.
3Productivity
If traffic is offloaded to local gateways, then resource utilization improves, but connection management complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where L-GWs continuously report connection status, resource usage, and user equipment location to a central management entity. This feedback enables automated connection management, session establishment, and handover coordination, improving resource utilization while keeping management complexity controlled through centralized oversight.
4Device complexity
If centralized gateway is used, then security management is simplified, but security vulnerabilities increase due to single point of attack
Solution Approach 1:
The patent segments the centralized gateway security function into distributed security modules at each L-GW. Each L-GW independently performs authentication, authorization, and encryption for local traffic, eliminating the single point of attack while maintaining simplified security management through standardized security protocols and centralized policy enforcement.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Providing for select Internet Protocol traffic offload (SIPTO) in a mobile communication environment is described herein. By way of example, SIPTO traffic can be facilitated via local packet gateways (P-GWs) that provide an interface to the Internet or a like data network, in addition to a centralized gateway GPRS support node (GGSN). Eligibility for SIPTO can be on a user equipment (UE) by UE basis; for instance, relying on stored subscription or account information to determine SIPTO eligibility. In particular aspects, eligibility for SIPTO can also be based on a packet network by packet network basis, or a combination of the foregoing. This enables flexibility in determining whether SIPTO can be established for a given UE in a given location, and can be based for instance on UE capability, subscription status information, data network capability, tariff rates, and so on, as well as different legal requirements of government jurisdictions.