UE Neighbor Cell Reporting via MDT Drive Tests
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Solution Overview
Problem
Current Minimize Drive Test (MDT) technologies in UMTS and LTE systems lack effective methods for UE to obtain and report neighbor cell information, leading to difficulties in timely handover and network performance optimization, especially in complex urban environments.
Innovation Solution
A method and system where the network side sends measurement configuration and reporting information to UE, enabling UE to perform drive tests and report neighbor cell information when signal thresholds are exceeded, allowing the network side to manage and update neighbor cell relations in real-time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional manual drive test is used to collect neighbor cell information, then measurement precision can be ensured, but productivity is low and loss of time is high
Solution Approach 1:
The UE autonomously performs drive tests and collects neighbor cell information without manual intervention. The network side only needs to send measurement configuration, and the UE automatically executes measurements, determines reporting conditions, and reports results, enabling self-service information collection that improves productivity while maintaining accuracy
Solution Approach 2:
The system implements a feedback mechanism where the UE reports neighbor cell information to the network side based on predetermined reporting conditions (such as signal threshold exceedance). The network side uses this feedback to automatically update neighbor cell relations, creating a closed-loop system that efficiently collects and processes information without manual drive tests
2Device complexity
If existing RRM measurement mechanism is used, then device complexity is reduced, but loss of information occurs due to lack of location information and limited measurement scope
Solution Approach 1:
The invention merges the advantages of manual drive tests (comprehensive information collection) with the simplicity of automated RRM mechanisms. By combining UE-autonomous measurement capabilities with network-configured reporting conditions, the system achieves both information completeness and mechanism simplicity, eliminating the trade-off between complexity and information quality
Solution Approach 2:
The system dynamically adjusts measurement and reporting based on predetermined conditions. The UE continuously monitors signal thresholds and automatically triggers reporting when conditions are met, creating a dynamic information collection process that adapts to changing radio environments while maintaining simple operational procedures
3Productivity
If manual drive test is replaced by automated MDT, then productivity increases, but reliability decreases due to insufficient uplink coverage for measurement reporting
Solution Approach 1:
The system performs preliminary configuration of measurement parameters and reporting conditions before actual measurements begin. The network side pre-configures threshold values and reporting criteria, enabling the UE to autonomously determine when and how to report, ensuring reliable operation even in challenging uplink conditions without requiring real-time network coordination
Data Source
AI summary
The present invention provides a method and system for reporting neighbor cell information. The method includes: a network side sending a measurement configuration and reporting information of a drive test to user equipment; the user equipment performing the drive test, and reporting drive test results containing information of neighbor cells around the user equipment to the network side when a reporting triggering condition is satisfied (201). In the present invention, by using a Minimize drive test (MDT) measurement event in the drive test, the information of neighbor cells around the user equipment is discovered and reported to the network side for maintenance, and since the network side obtains the information of neighbor cells around the user equipment in time, the effectiveness of the user equipment performing the cell handover is guaranteed, thereby enhancing a network performance of a communication system.