Radio Base Station Handover Attribute Matching
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Solution Overview
Problem
Handover failures occur due to mismatched attribute values between neighboring radio base stations, leading to communication discontinuity and load balancing issues during handovers between cells.
Innovation Solution
A method where a second radio base station transmits attribute values related to its controlled cell to an adjacent first radio base station, which compares and matches these values with its own attribute values using a predetermined criterion, ensuring consistency and preventing handover failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If attribute values are independently set in each radio base station, then each base station can operate autonomously, but handover failures occur due to mismatched attribute values between neighboring base stations
Solution Approach 1:
The patent implements a feedback mechanism where radio base stations exchange attribute value information with neighboring base stations through X2 interface messages. Each base station reports its cell attribute values (such as handover thresholds, load balancing parameters) to neighbors, and receives their corresponding values. This feedback loop enables automatic detection of mismatches and coordinated adjustment to ensure consistency, thereby maintaining both autonomous operation and handover reliability.
Solution Approach 2:
The patent introduces an intermediary information exchange mechanism using standardized X2 interface messages between neighboring radio base stations. These messages serve as intermediaries to transmit attribute value configurations, enabling indirect coordination without requiring direct manual intervention or centralized control. The intermediary message format includes cell identity, attribute value parameters, and mismatch detection indicators, facilitating reliable information transfer for handover optimization.
2Ease of operation
If attribute values are manually configured in each base station, then configuration flexibility is maintained, but inconsistency and handover failures occur between neighboring cells
Solution Approach 1:
The patent enables radio base stations to automatically detect and resolve attribute value mismatches without manual intervention. Each base station autonomously compares its configured attribute values with received values from neighboring stations, identifies inconsistencies, and triggers automatic coordination procedures. This self-service mechanism maintains configuration flexibility while ensuring consistency, eliminating the need for manual verification and adjustment of handover parameters across the network.
Solution Approach 2:
The system implements automated feedback loops where attribute value mismatches are detected through message exchange between neighboring base stations. When inconsistencies are identified, the affected base stations receive feedback information indicating the nature of the mismatch and automatically adjust their configurations accordingly. This feedback-driven approach preserves operator-configurable flexibility while guaranteeing attribute value consistency across cell boundaries.
3Productivity
If handover parameters are optimized for individual cells, then local performance is improved, but load balancing and communication continuity deteriorate during inter-cell handovers
Solution Approach 1:
The patent merges the optimization perspectives of neighboring base stations by enabling them to share and compare their handover parameter configurations. Instead of each base station independently optimizing parameters in isolation, the system combines the parameter sets from multiple neighboring stations through standardized message exchange. This merging approach allows coordinated optimization that simultaneously considers local cell performance requirements and inter-cell handover continuity, preventing conflicts that would otherwise degrade communication reliability during handovers.
Data Source
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AI summary
During a handover between cells of neighboring radio base stations, handover failure may occur due to mismatch between attribute values of the neighboring radio base stations. A communication control method according to the present invention includes: transmitting, by a second radio base station (103) adjacent to a first radio base station (100), an attribute value relating to a second cell (102) under control of the second radio base station (103) to the first radio base station (100); receiving, by the first radio base station (100), the attribute value relating to the second cell; comparing, by the first radio base station (100), the attribute value relating to the second cell (102) with an attribute value relating to a first cell (101) under control of the first radio base station (100); and executing, by the first radio base station (100), processing for matching the attribute value relating to the second cell (102) with the attribute value relating to the first cell (101) in accordance with a predetermined criterion when the received attribute value relating to the second cell (102) is different from the attribute value relating to the first cell (101).