Small Base Station LBO Data Interception via Proxy

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Solution Overview

Problem

In mobile networks, data interception in Local BreakOut (LBO) scenarios is not currently possible, as traffic is offloaded directly to the Internet, bypassing core network devices like S-GW and PDN-GW, making it impossible to intercept events associated with the interception target.

Innovation Solution

A method and device for interception based on LBO, where a small base station receives an interception task, intercepts LBO data, and transmits the intercepted data to a core network device or interception proxy, allowing for the association of feature values with each bearer for data correlation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traffic is offloaded directly to the Internet at the base station (LBO), then the load on core network devices is reduced, but data interception capability is lost

Engineering Contradiction:

Improvecore network device loadVSAvoiddata interception capability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

An interception proxy is introduced as an intermediary component between the base station and the Internet. The proxy receives intercepted data from the base station and forwards it to the lawful interception system, enabling interception capability to be maintained while preserving the LBO traffic offloading architecture.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Speed

If traffic bypasses core network devices like S-GW and PDN-GW, then network efficiency is improved, but the ability to intercept events associated with the interception target is compromised

Engineering Contradiction:

Improvenetwork efficiencyVSAvoidintercepted event data

Core Design Contradiction:

SpeedVSLoss of information

Solution Approach 1:

The base station is configured to perform preliminary interception actions on LBO data before it leaves the mobile network. By intercepting data at the base station level and forwarding it through the interception proxy, the system ensures that event data is captured early in the data path, preventing any loss of interception information.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If LBO routing is implemented at the base station, then local datagram delivery is enabled, but conventional interception methods become inapplicable

Engineering Contradiction:

Improvelocal datagram deliveryVSAvoidinterception system compatibility

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The interception function is segmented and relocated from core network devices to the base station and interception proxy. This segmentation allows LBO routing to operate independently at the base station while the interception proxy handles the specialized interception tasks, making the system adaptable to LBO architecture without requiring changes to conventional interception protocols.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS10986495B2Interception method and apparatus based on local breakout

Publication Date: 2021.04.20 BAICELLS TECH CO LTD

AI summary

The present disclosure provides a method and a device for interception based on Local Break Out (LBO). The method includes: receiving, by a small base station, an interception task instructing the small base station to intercept an interception target; intercepting, by the small base station, LBO data of the interception target based on the interception task to obtain intercepted data; and transmitting, by the small base station, the intercepted data. The present disclosure can solve the problem in the related art that data of an interception target cannot be intercepted in an LBO scenario.