Collocated Local Gateway Address Reporting in Dual-Connection Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current LTE systems lack a technical solution for implementing local gateway services in scenarios with dual-connection service features, particularly in dense small cell deployments where frequent handovers and signaling shocks occur due to high-frequency signal attenuation, leading to inefficient user data transmission and core network strain.
Innovation Solution
A method and system that involve a first connection device adding a second connection device for a terminal, interacting and reporting collocated local gateway address information between them, and using this information for the core network to perform local gateway services, such as SIPTO@LN or LIPA@LN, by establishing connections via interfaces like Xn or X2 and reporting through S1 interface messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-frequency points (3.5 GHz) are adopted to increase user throughput, then user throughput is improved, but signal attenuation increases and coverage range decreases
Solution Approach 1:
The patent segments the network into macro base stations and small cellular base stations, where macro stations provide wide coverage and small cells provide high-capacity local access. This segmentation allows high-frequency 3.5 GHz signals to be used in small cells with limited coverage areas, thereby achieving high user throughput without suffering from excessive signal attenuation over long distances.
Solution Approach 2:
The patent applies local quality by deploying small cellular base stations in specific high-traffic areas (hotspots) rather than uniformly across the entire network. This allows high-frequency signals to be used locally where they provide maximum benefit, while macro base stations continue to provide coverage in areas where lower frequencies are more effective.
2Area of stationary object
If small cellular base stations are deployed to improve coverage, then coverage capacity is improved, but frequent handovers occur and signaling shock increases
Solution Approach 1:
The patent merges the control plane and user plane functions in a novel way by introducing the collocated L-GW concept. The user plane is distributed to small cellular base stations for local data processing, while the control plane remains centralized at the macro base station. This merging approach allows small cells to be deployed for expanded coverage without causing frequent handovers, as the control plane continuity is maintained through the macro station connection.
3Adaptability or versatility
If collocated L-GW is deployed on small cellular base stations, then local gateway service is enabled, but core network signaling load increases during handovers
Solution Approach 1:
The patent introduces the macro base station as an intermediary between small cellular base stations and the core network. When a user moves between small cells, the handover is managed through the macro base station, which acts as a mediator. This intermediary approach enables local gateway services on small cells while avoiding direct signaling between small cells and the core network, thereby reducing the signaling load on the core network during handovers.
Data Source
AI summary
The present document provides a method, a device and a system for implementing a local gateway service. Wherein the method includes: adding, by a first connection device, a second connection device for a terminal (300); interacting collocated local gateway address information between the first connection device and the second connection device (301); and reporting, by the first connection device, determined collocated local gateway address information to a core network, and using, by the core network, the collocated local gateway address information to perform the local gateway service (302). Through the technical solution provided by the embodiment of the present document, the core network obtains the collocated local gateway address information, and the local gateway service is implemented aiming at a dual-connection service scenario.