Mobility Parameter Negotiation Between Base Stations
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current mobility parameter negotiation between base stations in LTE/LTE-A networks lacks clarity on source and target cell IDs in acknowledgement and failure messages, leading to message disorder and inconsistency in mobility parameter modifications, which degrades network performance.
Innovation Solution
Incorporating source cell ID, target cell ID, and base station IDs into mobility parameter modification acknowledgement and failure messages to ensure accurate recognition and differentiation of negotiation processes, thereby preventing message disorder and enhancing robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If cell ID information is included only in the request message and not in the acknowledgement and failure messages, then the message structure is simpler, but the source base station cannot recognize which source cell the negotiation is performed to, leading to message disorder and inconsistency
Solution Approach 1:
The message structure is segmented to include specific identification fields (source cell ID, target cell ID) in each message type. The request message, acknowledgement message, and failure message each contain dedicated ID fields that clearly identify the source cell and target cell, allowing the source base station to correctly match responses with the corresponding negotiation requests even when multiple negotiations occur in parallel.
2Productivity
If multiple service cells initiate mobility parameter negotiation in parallel, then the negotiation throughput increases, but the source base station fails to know which target cell a negotiation message comes from, causing message disorder
Solution Approach 1:
The acknowledgement message and failure message include feedback fields (target cell ID, source base station ID, target base station ID) that allow the source base station to verify the identity of the target cell and match the response with the corresponding negotiation request. This feedback mechanism ensures correct message pairing even when multiple negotiations occur simultaneously.
3Speed
If cell ID information is not included in the acknowledgement and failure messages, then the message transmission is faster, but the mobility parameter modification becomes erroneous, degrading network performance
Solution Approach 1:
The source base station performs preliminary action by generating and including unique identification information (source cell ID, target cell ID) in the original negotiation request. This preliminary identification is then referenced in the acknowledgement and failure messages, allowing the source base station to quickly match responses with requests without requiring redundant ID transmission, thus maintaining speed while ensuring accuracy.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The disclosure discloses a method for mobility parameter negotiation between base stations (BSs). A target BS performs a mobility parameter decision and an optimization processing after receiving a mobility parameter modification request message from a source BS. When the processing succeeds, the target BS sends a mobility parameter modification acknowledgement message at least carrying a message type and a source cell ID to the source BS; when it fails, the target BS sends a mobility parameter modification failure message at least carrying a message type, a reason of failure, and the source cell ID to the source BS. A system for mobility parameter negotiation between BSs is also provided. Through the disclosure, the source BS is able to precisely recognize which source cell the mobility handover parameter negotiation is performed to, and further precisely knows which target cell the negotiation message comes from, thereby avoiding the inconsistency of the mobility parameter modification caused by message disorder, improving robustness of the mobility parameter modification and enhancing the network performance.