Dynamic Beam Sweeping Factor Reporting for 5G UE
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Solution Overview
Problem
In 5G and LTE wireless communication systems, traditional beam sweeping factors are static, which fails to adapt to dynamic mobility and varying angle of arrival conditions of user equipment (UE), leading to suboptimal radio link monitoring and beam failure detection, resulting in inefficient measurement times and potential link failures.
Innovation Solution
The introduction of a dynamic beam sweeping factor (N_fac) that can be adaptively reported by user equipment (UE) to the network, allowing for real-time adjustment of beamforming parameters and measurement configurations based on mobility and radio conditions, reducing the impact on radio link monitoring and beam failure detection resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a static beam sweeping factor is used, then device complexity is reduced, but radio link monitoring reliability deteriorates under dynamic mobility conditions
Solution Approach 1:
The patent implements a dynamic beam sweeping factor that adapts to changing mobility conditions and angle of arrival variations. The factor is adjusted based on UE mobility state detection and radio link quality measurements, allowing the system to respond to dynamic environmental changes rather than using a fixed static value.
Solution Approach 2:
The system employs feedback mechanisms where the UE reports beam sweeping factor suggestions to the network based on observed radio conditions and mobility patterns. The network entity receives this feedback and adjusts the beam sweeping factor accordingly, creating a closed-loop control system that improves reliability while managing complexity.
2Reliability
If a dynamic beam sweeping factor is implemented, then radio link monitoring reliability improves, but device complexity increases
Solution Approach 1:
The patent implements a dynamic beam sweeping factor that adapts to changing mobility conditions and angle of arrival variations. The factor is adjusted based on UE mobility state detection and radio link quality measurements, allowing the system to respond to dynamic environmental changes rather than using a fixed static value.
Solution Approach 2:
The system employs feedback mechanisms where the UE reports beam sweeping factor suggestions to the network based on observed radio conditions and mobility patterns. The network entity receives this feedback and adjusts the beam sweeping factor accordingly, creating a closed-loop control system that improves reliability while managing complexity.
3Reliability
If beam sweeping factor is increased to handle mobility, then reliability improves, but measurement time increases
Solution Approach 1:
The patent implements a dynamic beam sweeping factor that adapts to changing mobility conditions and angle of arrival variations. The factor is adjusted based on UE mobility state detection and radio link quality measurements, allowing the system to respond to dynamic environmental changes rather than using a fixed static value.
Solution Approach 2:
The system dynamically changes the beam sweeping factor parameter based on detected mobility conditions and radio link quality. By adjusting this key parameter adaptively, the system optimizes the balance between reliability and measurement time, using higher factors only when necessary for high-mobility scenarios.
Data Source
AI summary
User equipment dynamic scaling beam sweeping factor reporting is provided. A method for user equipment dynamic scaling beam sweeping factor reporting may include transmitting, to a network entity, capability information for supporting a dynamic beam sweeping factor by the apparatus. The dynamic beam sweeping factor may be adaptable over a range of values. The method may further include transmitting the dynamic beam sweeping factor to the network entity in assistance information of the apparatus over an uplink control channel.