SINR-Based Group Beam Reporting for 5G Network Performance
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Solution Overview
Problem
Current group-based beam reporting frameworks in wireless communication systems, such as those used in 5G NR, face inefficiencies in accurately reflecting cross-beam interference, leading to potential degradation in network performance due to incorrect SINR metrics when reporting CSI-RS or SS/PBCH resources.
Innovation Solution
The proposed solution involves configuring multiple candidate beam groups at the base station to enable the user equipment (UE) to report beam pairs that can be simultaneously received, with measurement configurations that include channel measurement resources (CMR) and interference measurement resources (IMR) to accurately compute and report the signal-to-interference-and-noise ratio (SINR) per beam, reflecting cross-beam interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current group-based beam reporting frameworks are used, then beam reporting can be performed, but SINR metrics are inaccurate due to failure to reflect cross-beam interference
Solution Approach 1:
The patent segments the beam reporting process by separating channel measurement resources (CMR) from interference measurement resources (IMR). Each resource is measured independently and then combined to compute accurate SINR metrics. This segmentation allows the system to separately characterize the desired signal strength and the interfering signal strength, resolving the contradiction between measurement precision and reliability.
Solution Approach 2:
The patent introduces an intermediary measurement mechanism using IMR resources that specifically capture cross-beam interference. These IMR measurements act as intermediaries between the raw signal measurements and the final SINR calculation, enabling accurate reflection of interference conditions without compromising network performance reliability.
2Ease of operation
If multiple candidate beam groups are configured, then beam pair selection can be improved, but measurement and computation complexity increases
Solution Approach 1:
The patent segments the large set of candidate beams into multiple manageable beam groups. Each group can be measured and evaluated separately, reducing the computational burden compared to evaluating all beams simultaneously. This segmentation makes beam pair selection easier while controlling measurement complexity.
Solution Approach 2:
The patent enables the system to focus measurements on partial sets of beams (specific groups) rather than requiring complete measurement of all possible beam combinations. This partial action approach simplifies the measurement configuration while still providing sufficient information for effective beam pair selection.
Data Source
AI summary
The present disclosure relates to apparatus and methods of signal to interference and noise ratio (SINR)-based group beam reporting. In particular, this disclosure relates to measurement report configurations for initiating a protocol layer 1 (L1)-SINR based group beam report, and corresponding measurement resource transmissions by a base station and measurement and reporting actions of the UE to report the L1-SINR for each of at least two beams that can be simultaneously received. The measurement report configurations include a channel measurement resource (CMR) configuration, an interference measurement resource (IMR) configuration, or both. The measurement configuration may indicate a plurality of CMR repetition sets, or N resource sets of 1 CMR resource plus N−1 IMRs, e.g., 1 CMR mapped to N−1 IMRs, or N×(N−1) resource sets of a CMR and an IMR, e.g., 1 CMR mapped to 1 IMR, where N is the number of candidate Tx beams.