Adaptive Beam Reporting Formats for 5G NR Measurement Overhead
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Solution Overview
Problem
Existing wireless communication systems, particularly 5G NR, lack flexibility and efficiency in beam reporting formats, leading to suboptimal performance in beam measurement reporting.
Innovation Solution
A method and apparatus that allow user equipment (UE) and network nodes to dynamically select and report beam measurements using a plurality of beam reporting formats, including different numbers of beams and quantization levels, enhancing flexibility and precision in reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed beam reporting format is used, then the system complexity is reduced, but the adaptability and precision of beam measurement reporting deteriorate
Solution Approach 1:
The patent implements dynamic beam reporting by allowing the UE to select from multiple reporting formats (e.g., reporting 1, reporting 2) based on current channel conditions and measurement requirements. The network can trigger format switching through DCI indicators, enabling the system to adapt between detailed reporting (when channel conditions are good) and concise reporting (when conditions are poor), thus resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The patent changes the parameter of reporting format dynamically by introducing multiple configurable formats with different numbers of beams reported, different quantization levels for RSRP values, and different triggering mechanisms. This allows the system to optimize reporting precision and overhead by selecting appropriate parameters based on current operational needs, addressing the contradiction between adaptability and complexity.
2Measurement precision
If more beam measurements are reported, then the measurement precision is improved, but the signaling overhead and processing complexity increase
Solution Approach 1:
The patent applies partial action by allowing the UE to report only a subset of measured beams depending on the selected reporting format and current channel conditions. Instead of always reporting all measured beams, the system reports only the necessary number (e.g., top 1 beam, top 2 beams, or up to 8 beams) to achieve sufficient measurement precision while minimizing signaling overhead.
Solution Approach 2:
The patent enables dynamic adjustment of reporting parameters including the number of beams to report, quantization levels for RSRP values, and triggering conditions. This allows the system to optimize the balance between measurement precision and data volume by selecting appropriate parameters based on current operational requirements, channel conditions, and network preferences.
3Speed
If beam reporting is performed frequently, then the responsiveness of the system is improved, but the energy consumption and processing load increase
Solution Approach 1:
The patent implements periodic and event-triggered reporting mechanisms where the UE transitions between dormant and active states. Instead of continuous reporting, the system uses periodic measurements combined with event-triggered reporting (e.g., when beam quality changes exceed a threshold or when specific channel conditions are met), thereby improving responsiveness while reducing energy consumption and processing load.
Solution Approach 2:
The patent enables dynamic switching between different reporting modes and formats based on current channel conditions and network requirements. The UE can dynamically adjust its reporting behavior, transitioning between frequent detailed reporting (when channel conditions are stable and good) and infrequent concise reporting (when conditions are poor or resources are constrained), thus balancing responsiveness with energy efficiency.
Data Source
AI summary
A network node may transmit a first indicator of a plurality of beam reporting formats. A user equipment (UE) may receive the first indicator of a plurality of beam reporting formats. The UE may receive a set of reference signals (RSs). The UE may measure the set of RSs. The UE may select a beam reporting format from the plurality of beam reporting formats. The UE may transmit a measurement report. The measurement report may include a second indicator of the measured set of RSs based on the selected beam reporting format. The network node may receive the measurement report. The measurement report may include a third indicator of the selected beam reporting format.