Wireless Device Handover Report for Beam Optimization
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Solution Overview
Problem
Current 5G NR handover procedures face challenges in detecting issues related to successful handovers, particularly in scenarios where the user equipment (UE) experiences near-radio link failure conditions, leading to sub-optimal performance due to abrupt channel fluctuations and beam-based random access channel access procedures.
Innovation Solution
Implementing a method where a wireless device compiles and transmits a successful handover report to a target cell, including state information such as handover timers, radio link failure counters, and measurement data, to aid the network in optimizing handover parameters and beam configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network implements traditional handover procedures without reporting mechanisms, then the handover process is simpler, but the network cannot detect or optimize handover issues and performance remains sub-optimal
Solution Approach 1:
The patent implements a feedback mechanism where the UE reports successful handovers to the target cell, including state information such as timer values and measurement data. This feedback loop enables the network to detect handover issues and optimize performance without fundamentally changing the handover procedure structure.
Solution Approach 2:
The patent performs preliminary actions by having the UE compile and transmit handover reports before the handover is fully completed. The report includes state information captured during the handover process, allowing the network to analyze and optimize handover parameters in advance for future handovers.
2Reliability
If the UE continuously monitors and reports handover state information, then the network can optimize handover performance, but the UE processing burden and signaling overhead increase
Solution Approach 1:
The patent applies partial action by having the UE report only specific state information relevant to handover optimization (such as timer values T304, T310, T312 and measurement data) rather than continuously reporting all possible parameters. This selective reporting reduces UE processing energy while maintaining sufficient information for network optimization.
3Difficulty of detecting and measuring
If the network waits for RLF declaration to identify handover issues, then the detection mechanism is simpler, but the user experience deteriorates due to longer detection time
Solution Approach 1:
The patent performs preliminary detection by capturing and reporting handover state information (timer values, measurement data) during the handover process itself, before RLF is declared. This allows the network to identify handover issues earlier, reducing detection time and improving user experience while maintaining relatively simple detection mechanisms.
Data Source
AI summary
A method performed by a wireless device includes, in response to a successful handover procedure, compiling a successful handover report comprising state information of the wireless device. The successful handover report is transmitted to a target cell.