MDT Log Reporting in Wireless Systems
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Solution Overview
Problem
In wireless communication systems, the reporting of logged minimization of drive tests (MDT) logs from user equipment (UE) to base stations can be interrupted when the UE intends to release a connection, leading to potential loss of unreported logs and inefficiencies in network optimization.
Innovation Solution
The method involves not transmitting a request message for connection release during MDT reporting by the UE and not responding to such requests from the UE when the network is receiving MDT logs, ensuring continuous reporting and reception of logs without interrupting the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the UE transmits a request message to release the connection during MDT reporting, then the power consumption of the UE is reduced, but the MDT reporting is interrupted and logs are lost
Solution Approach 1:
The network pre-configures the UE with MDT logging parameters and storage capacity before the UE enters idle mode. The UE performs measurements and stores MDT logs in advance during idle mode, so that when the UE transitions to connected mode, the logs are already prepared and can be reported continuously without interruption, preventing log loss while allowing the UE to release connections for power saving.
2Loss of information
If the UE maintains the connection during MDT reporting, then the MDT logs are reported completely, but the power consumption of the UE increases
Solution Approach 1:
The UE periodically transitions between idle and connected modes to report MDT logs in batches rather than maintaining continuous connection. The UE performs measurements during idle mode, then transitions to connected mode periodically to report accumulated logs, achieving complete log reporting while minimizing power consumption through periodic rather than continuous operation.
Solution Approach 2:
The UE performs measurements and accumulates MDT logs during idle mode before transitioning to connected mode for reporting. This preliminary action during idle mode allows the UE to minimize power consumption while ensuring logs are ready for complete reporting when connection is established.
3Use of energy by moving object
If the UE releases the connection to reduce power consumption, then the power consumption is reduced, but the MDT reporting efficiency decreases
Solution Approach 1:
The system implements periodic reporting cycles where the UE accumulates logs during idle mode and reports in batches during connected mode transitions. This periodic action optimizes the balance between power consumption and reporting efficiency by avoiding frequent connection establishment while ensuring comprehensive log collection over time.
Solution Approach 2:
The network pre-configures the UE with MDT parameters and the UE pre-performs measurements during idle mode, so that when connection is established for reporting, the logs are already prepared. This preliminary action during idle mode increases reporting efficiency by eliminating measurement overhead during connected mode while maintaining low power consumption.
Data Source
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AI summary
A method of handling minimization of drive tests (MDT) reporting of a mobile device in a wireless communication system is disclosed. The method comprises not transmitting a request message to a network of the wireless communication system, when the mobile device is performing the MDT reporting to the network, wherein the request message is used for releasing a connection between the mobile device and the network.