Multi-TRP Beam Group Reporting With Differential CSI Feedback
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently reporting beam measurements from multiple transmission reception points (TRPs) without incurring significant signaling overhead.
Innovation Solution
Implementing group-based beam reporting methods where a UE reports multiple beam groups and beams per group in a single CSI report, using absolute and differential measurements, and associating each group with respective TRPs to reduce signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional beam reporting methods are used for multi-TRP scenarios, then measurement accuracy is maintained, but signaling overhead increases significantly
Solution Approach 1:
The patent segments beam reports into groups associated with different TRPs, where each group contains measurements for multiple beams from a single TRP. This segmentation allows the network to process and manage measurement data in organized units, reducing the complexity of handling comprehensive multi-TRP measurements while maintaining measurement accuracy for each TRP's beams.
Solution Approach 2:
The patent merges multiple individual beam measurements into consolidated group reports for each TRP. By combining measurements of multiple beams from the same TRP into a single report group, the system reduces the total number of separate signaling messages while preserving all necessary measurement information for beam management decisions.
2Adaptability or versatility
If comprehensive beam reports from multiple TRPs are transmitted, then beam management capability is improved, but reporting speed decreases due to increased data volume
Solution Approach 1:
By dividing comprehensive beam reports into segmented groups organized by TRP, the system enables parallel processing and more efficient transmission. Each TRP's beam measurements can be reported independently in their own groups, allowing the network to handle multiple TRPs simultaneously without a single large report bottlenecking the overall reporting speed.
Solution Approach 2:
The patent implements preliminary organization of beam measurements into TRP-associated groups before transmission. This pre-structuring of data reduces processing time at the receiving end and enables faster interpretation of beam reports, thereby improving overall reporting speed while maintaining comprehensive beam management capability.
3Measurement precision
If individual beam measurements are reported separately, then measurement detail is preserved, but processing complexity at the network side increases
Solution Approach 1:
The patent combines multiple individual beam measurements into consolidated groups for each TRP. This merging process at the UE side before transmission simplifies the data structure arriving at the network, reducing processing complexity while preserving measurement detail through the organized group structure that maintains all necessary beam information.
Solution Approach 2:
The TRP-associated group structure acts as an intermediary organization between individual beam measurements and network processing. This intermediate grouping level provides structured organization that the network can easily process while maintaining the detailed measurement information, thereby reducing network processing complexity without sacrificing measurement precision.
Data Source
AI summary
Embodiments include methods for a user equipment (UE) configured for operation in a wireless network. Such methods include receiving a configuration of at least first and second resource sets. Each resource set includes multiple reference signals associated with corresponding multiple spatial filtering configurations. Such methods include performing measurements on the reference signals of the first and second resource sets and sending, to the wireless network, a beam report including the measurements arranged in at least first and second groups. Each group includes measurements performed on a first reference signal from the first resource set and on a second reference signal from the second resource set. The first and second reference signals are received concurrently by the UE. One measurement included in the first group is expressed as an absolute value, while others in the first group are expressed as differential values relative to the absolute value.