Adapting Measurement Report Mapping for Beamforming Gain
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Solution Overview
Problem
Current measurement reporting procedures in 3GPP New Radio (NR) do not adequately account for beamforming gains, leading to inaccurate interpretation of measurement results and challenges in procedures such as handovers and positioning, especially in millimeter wave (mmW) scenarios where beamforming enhances measurement performance.
Innovation Solution
Adapting measurement report mappings based on whether a measurement is associated with beamforming gain, using criteria like frequency range, signal type, device capability, and configuration messages to determine appropriate report mappings that reflect beamforming gains, ensuring accurate reporting and interpretation of measurement results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If beamforming is applied to enhance measurement performance in mmW scenarios, then measurement accuracy is improved, but measurement reporting accuracy deteriorates due to inadequate account for beamforming gains
Solution Approach 1:
The patent changes the reporting parameters by introducing beamforming gain indicators and adapting report mappings based on beamforming configuration. The network configures different report mappings (e.g., first mapping for beamformed measurements, second mapping for non-beamformed measurements) to accurately represent measurement results under different beamforming conditions, thereby preventing information loss in the reporting process.
2Loss of information
If multiple report mappings are configured to account for beamforming gains, then reporting accuracy is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic selection of report mappings based on the beamforming configuration state. The UE determines whether beamforming is configured for a measurement and dynamically selects the appropriate report mapping (first or second mapping) accordingly. This dynamic adaptation allows accurate reporting without requiring the device to permanently maintain multiple complex configurations, thereby reducing overall device complexity.
3Productivity
If beamforming gain is included in measurement reports, then measurement performance is improved, but interpretation accuracy deteriorates due to inadequate account for beamforming gains
Solution Approach 1:
The patent introduces an intermediary mechanism - the beamforming gain indicator and adapted report mapping - that bridges the gap between beamformed measurements and network interpretation. The indicator explicitly signals whether beamforming was applied, allowing the network to correctly interpret the measurement results by selecting appropriate thresholds and evaluation criteria based on the indicated beamforming state, thereby maintaining interpretation accuracy despite including beamforming gains.
Data Source
AI summary
Embodiments of a wireless device, a network node, and methods of operation thereof for adapting a measurement reporting mapping for a measurement being or expected to be performed by the wireless device are disclosed. In some embodiments, a method performed by a wireless device in a wireless communication system comprises obtaining information indicative of whether a measurement being performed or expected to be performed by the wireless device on one or more signals is associated with a beamforming gain and determining a measurement report mapping based on the obtained information. The method further comprises using the determined measurement report mapping to transmit a measurement result to another node. In this manner, the measurement report mapping is adapted based on whether the measurement is associated with a beamforming gain.