Conditional Reconfiguration Measurement Reporting for Reliable Handoffs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing handoff procedures in wireless communication systems, particularly conditional handoff (CHO) procedures, suffer from inefficiencies and failures due to inadequate measurement reporting and reconfiguration mechanisms, leading to suboptimal user experience and network performance.
Innovation Solution
Enhanced conditional reconfiguration procedures that include improved measurement reporting and timeline management to optimize handoff processes, incorporating dual active protocol stacks (DAPS) to ensure seamless transitions and reduce failure rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional handoff procedures are used, then the system is simpler to implement, but handoff reliability deteriorates due to inadequate measurement reporting and reconfiguration mechanisms
Solution Approach 1:
The patent implements conditional handoff where the UE is pre-configured with multiple candidate target cells and their corresponding reconfiguration parameters before actual handoff is needed. The source gNB provides conditional reconfiguration information including RRC reconfiguration messages for multiple potential target cells, allowing the UE to quickly execute handoff when measurement conditions are met without waiting for real-time reconfiguration commands.
Solution Approach 2:
The patent enhances measurement reporting mechanisms where the UE continuously monitors and reports measurement results to the source gNB. The source gNB uses this feedback to determine when to trigger handoff based on predefined conditions. The UE also provides feedback about the execution of conditional reconfiguration, allowing the network to track handoff status and make informed decisions.
2Reliability
If measurement reporting is increased to improve handoff decisions, then handoff reliability improves, but signaling overhead and processing time increase
Solution Approach 1:
The source gNB pre-configures the UE with measurement parameters, reporting criteria, and multiple candidate target cell information before handoff is triggered. This preliminary setup includes defining measurement IDs, object types, and reporting conditions, so that when handoff is needed, the UE can immediately compare measurements against pre-defined thresholds and execute handoff without extensive real-time processing.
Solution Approach 2:
The patent segments the handoff process into distinct phases: measurement configuration phase, measurement execution phase, and handoff execution phase. Each phase has specific reporting requirements optimized for its function. The measurement reporting is segmented into different types (e.g., periodic, event-triggered) based on the handoff stage, reducing unnecessary signaling while maintaining decision accuracy.
Data Source
AI summary
Procedures, methods, architectures, apparatuses, systems, devices, and computer program products are disclosed that may be implemented in a wireless transmit/receive unit (WTRU) for enhancing conditional reconfiguration procedures. In one representative embodiment, the WTRU may receive information associated with a conditional reconfiguration, and the information may respectively indicate a measurement resolution and/or a measurement period for at least one measurement report quantity associated with a conditional reconfiguration. After receiving the information, the WTRU may perform, over the measurement period, measurements on the at least one measurement report quantity according the measurement resolution. On condition the conditional reconfiguration is triggered, the WTRU may perform a random access procedure. After the random access procedure, the WTRU may send a measurement report for the random access procedure to a base station. The measurement report may include the measurements on the at least one measurement report.