Group-Based Beam Reporting With DL-RS Threshold Mode Switching
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Solution Overview
Problem
Existing beam management systems in wireless communications face challenges in efficiently managing beam reporting modes, particularly in scenarios where the difference between downlink reference signal measurements exceeds a constraint threshold, leading to suboptimal performance and limited scheduling flexibility.
Innovation Solution
A method and apparatus for user equipment (UE) to switch between fallback, enhanced group-based, and basic beam reporting modes based on the difference between downlink reference signal (RS) measurements, adjusting the reporting mode to optimize performance and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the UE uses enhanced group-based beam reporting mode to report N best DL RS, then the scheduling flexibility and beam management performance are improved, but the processing complexity and resource consumption increase
Solution Approach 1:
The patent implements dynamic switching between different beam reporting modes (fallback mode and enhanced group-based mode) based on real-time measurement of the difference between DL RS measurements. The UE automatically selects the appropriate mode by comparing the measurement difference against a constraint threshold, allowing the system to adapt processing complexity to actual channel conditions while maintaining scheduling flexibility when needed.
2Productivity
If the UE switches to fallback beam reporting mode when measurement difference exceeds threshold, then the processing load is reduced, but the beam management performance deteriorates
Solution Approach 1:
The patent changes the reporting mode parameter based on the measured difference between DL RS measurements. When the difference exceeds the constraint threshold, the system transitions from enhanced group-based mode to fallback mode, adjusting the reporting mechanism to match current channel conditions. This parameter change allows the system to maintain adequate performance while reducing processing load under challenging conditions.
Solution Approach 2:
The system continuously monitors the difference between DL RS measurements and uses this feedback to determine when to switch between reporting modes. This closed-loop feedback mechanism ensures that the UE only switches to fallback mode when necessary, maintaining beam management performance while optimizing processing efficiency based on real-time channel conditions.
3Measurement precision
If the UE performs frequent DL RS measurements to determine beam reporting mode, then the beam selection accuracy is improved, but the latency increases
Solution Approach 1:
The patent performs DL RS measurements and mode determination in advance before actual beam selection is needed. By continuously monitoring the measurement difference and pre-determining the appropriate reporting mode, the system reduces the latency during critical beam selection operations. The preliminary measurement and comparison actions are performed during normal operation cycles, ensuring accurate beam selection while minimizing overall processing time.
Data Source
AI summary
According to an example aspect of the present disclosure, there is provided a method comprising receiving a message at a user equipment (UE) from a base station (BS) the message including a constraint threshold, receiving a message at the UE from the BS the message including a fallback beam reporting mode, performing by the UE downlink (DL) reference signal (RS) measurements, determining by the UE a difference between DL RS measurements, and in response to determining the difference between DL RS measurements is not less than the constraint threshold switch to the fallback beam reporting mode.