Home Base Station X2 Gateway Address Notification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing LTE systems face challenges in establishing an indirect X2 connection between a macro base station and a home base station due to the inability of the macro base station to obtain the transport layer address of the X2 Gateway connected to the home base station, which is essential for managing and supporting a large number of home base stations efficiently.
Innovation Solution
A method and system where the first base station sends the transport layer address information of the X2 Gateway connected to it to a second base station, allowing the second base station to initiate an X2 connection establishment flow, and optionally storing this information in an access control list for firewall management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an indirect X2 connection is established through X2 Gateway between macro base station and home base station, then network management capability for large number of home base stations is improved, but the macro base station cannot obtain the transport layer address of the X2 Gateway connected to the home base station
Solution Approach 1:
The patent introduces the Mobility Management Entity (MME) as an intermediary to facilitate the transmission of transport layer address information. The MME receives the address information from the source base station through an S1 interface message and forwards it to the target base station, enabling the target base station to obtain the necessary routing information to establish indirect X2 connections through the X2 Gateway without directly querying the source base station.
Solution Approach 2:
The patent segments the information transmission process into distinct stages: (1) The source base station includes transport layer address information in an S1 interface message to the MME; (2) The MME extracts and stores this information; (3) The MME provides the information to the target base station when needed. This segmentation allows the address information to be managed and transmitted through appropriate network interfaces without requiring direct peer-to-peer communication between base stations.
2Ease of operation
If transport layer address information is transmitted through S1 interface between base stations, then the target base station can obtain the address for connection establishment, but the firewall function cannot be properly executed without access control list
Solution Approach 1:
The patent implements preliminary action by having the source base station include the transport layer address information in the S1 interface message before the target base station needs to establish a connection. The MME stores this information in advance, so when the target base station needs to connect through the X2 Gateway, the address information is already available. This allows both connection establishment and firewall verification to proceed smoothly without delays or security compromises.
Data Source
AI summary
A method and system for notifying a transport layer address are disclosed. The method includes: a first base station sending transport layer address information of an X2 gateway connected to the first base station to a second base station, wherein, the first base station is a home base station (step 10); and the second base station initiating an X2 connection establishment flow according to the received transport layer address information of the X2 gateway (step 20). The system includes: a first base station, configured to: send transport layer address information of an X2 gateway connected to the first base station to a second base station; wherein, the first base station is a home base station; and the second base station, configured to: initiate an X2 connection establishment flow according to the received transport layer address information of the X2 gateway.