UE Measurement Reporting Under Neighbor Cell Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
User equipment mounted on unmanned aerial vehicles (UAVs) experiences unreliable neighbor cell measurement due to susceptibility to interference from neighboring cells, leading to potential radio link failures and disrupted communication.
Innovation Solution
The user equipment uses an interference indicator (SINR) and quality indicator (RSRP) to determine when to transmit a measurement report, triggering transmission when the interference in the serving cell exceeds a threshold and neighbor cell quality meets another threshold, ensuring reliable neighbor cell measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE uses a lowered threshold for neighbor cell measurement due to interference susceptibility, then the UE can detect interference more sensitively, but the UE may fail to perform measurement and detect radio link failure
Solution Approach 1:
The patent changes the threshold parameter dynamically based on interference conditions. When interference is detected (SINR below threshold), the UE lowers the RSRP threshold for neighbor cell measurement, enabling sensitive interference detection while maintaining reliable measurement execution by adapting the threshold to current channel conditions.
Solution Approach 2:
The patent introduces dynamic threshold adjustment based on real-time interference assessment. The measurement threshold is not fixed but adapts according to the detected interference level, allowing the system to respond flexibly to changing radio conditions and maintain both sensitivity and reliability.
2Reliability
If the UE performs neighbor cell measurement frequently to ensure reliable handover, then the handover decision accuracy improves, but the interference from neighbor cells increases measurement unreliability
Solution Approach 1:
The patent adjusts the RSRP threshold parameter based on detected interference levels. When neighbor cell interference is high, the threshold is lowered to compensate, ensuring that measurements remain reliable despite the harmful interference, thus maintaining accurate handover decisions.
Solution Approach 2:
The patent implements a feedback mechanism where the UE continuously monitors interference conditions and adjusts measurement thresholds accordingly. This closed-loop approach ensures that measurement reliability is maintained by adapting to the actual interference environment, improving handover decision accuracy.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
UE (200) judges whether to transmit a measurement report based on measurement results of a serving cell and a neighbor cell. Upon judging to transmit the measurement report, the UE (200) transmits the measurement report. The UE (200) judges whether to transmit the measurement report based on an interference indicator that indicates a degree of interference in the serving cell and a quality indicator that indicates reception quality of the neighbor cell.