Source eNB X2 Connection Establishment via S1 Interface
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Solution Overview
Problem
Current LTE systems lack the ability to effectively determine and establish direct or indirect X2 connections between eNBs during the connection establishment process, which hampers network performance.
Innovation Solution
A method where a source eNB sends a request via the S1 interface for a transport address to a target eNB, including information on the type of X2 connection to be established, and receives a response containing the necessary TNL address and interface type, allowing the source eNB to initiate the X2 connection accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a direct X2 connection is established between eNBs, then communication efficiency is improved, but the system lacks the capability to determine whether to establish direct or indirect connections
Solution Approach 1:
The patent implements a feedback mechanism where the target eNB responds to the source eNB's transport address request by indicating the appropriate connection mode (direct or indirect X2). This feedback loop enables the source eNB to make informed decisions about connection establishment, resolving the contradiction between communication efficiency and adaptability by providing the necessary information to select the optimal connection mode.
Solution Approach 2:
The patent introduces an intermediary information exchange mechanism through the S1 interface, where the MME facilitates the transmission of connection mode indication information between source and target eNBs. This intermediary approach enables the system to determine the appropriate connection mode without requiring direct eNB-to-eNB negotiation, thus enhancing adaptability while maintaining communication efficiency.
2Device complexity
If no connection mode determination mechanism is implemented, then system complexity is reduced, but network performance enhancement is prevented
Solution Approach 1:
The patent segments the connection establishment process into distinct phases: initial transport address request via S1 interface, connection mode determination based on received indication information, and subsequent X2 connection establishment. This segmentation allows the system to add functionality for performance enhancement without significantly increasing overall complexity, as each phase handles a specific task independently.
3Ease of operation
If transport address information is exchanged without connection mode indication, then the establishment process is simplified, but the ability to establish optimal connections is lost
Solution Approach 1:
The patent applies preliminary action by having the target eNB include connection mode indication information in its response to the transport address request. This preliminary provision of connection mode information allows the source eNB to plan and execute the appropriate connection establishment procedure (direct or indirect X2) without requiring additional signaling exchanges, thus maintaining ease of operation while improving connection establishment effectiveness.
Data Source
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AI summary
Disclosed are a method, device and system for establishing a connection. The method comprises the following steps: a source base station sending a message of requesting an opposite end to transmit an address through an S1 interface (101); the source base station receiving a response message of requesting the opposite end to transmit the address (102); and the source base station initiating an X2 interface establishment flow for a target base station according to the response message (103).