Per-TRP FD Basis Remapping and NZC Permutation for 5G CSI
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems, particularly 5G NR, face inefficiencies in signal transmission and reception due to the lack of effective FD basis index remapping and NZC permutation across multiple TRPs, which affect communication efficiency and reliability.
Innovation Solution
The method involves rearranging and permuting the sequence of FD bases for each TRP based on relative FD basis index offsets and NZCs, allowing for improved FD basis index mapping and NZC ordering across multiple TRPs, enhancing communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional FD basis indexing is used without remapping and NZC permutation, then the system maintains simpler processing, but communication efficiency and reliability deteriorate due to ineffective signal transmission and reception
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing the mapping relationships between original FD basis indices and remapped FD basis indices, as well as pre-determining NZC permutation sequences. This allows the system to perform efficient lookups during actual signal processing without real-time computation, thereby improving communication efficiency while keeping the processing complexity manageable through pre-computation
Solution Approach 2:
The patent introduces dynamics by making the FD basis indexing and NZC permutation adaptive to different TRP configurations and channel conditions. The remapping strategy allows the system to dynamically adjust the FD basis selection and NZC ordering based on specific transmission scenarios, optimizing communication efficiency for varying system states while maintaining a structured approach through predefined remapping rules
2Reliability
If per-TRP FD basis index remapping and NZC permutation are implemented, then signal transmission and reception efficiency improves, but system complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the FD basis remapping and NZC permutation operations into TRP-specific segments. Each TRP has its own remapped FD basis indices and NZC permutation sequence, allowing independent optimization for each transmit receive point. This segmentation improves communication reliability by enabling TRP-specific optimization while managing system complexity through modular, independent processing for each TRP
Solution Approach 2:
The patent employs parameter changes by systematically transforming the FD basis indices through remapping and changing the ordering of NZCs through permutation. These parameter transformations are designed to optimize the representation of channel state information for each TRP, improving communication reliability by better matching the FD basis selection to actual channel conditions while maintaining structured transformation rules to control system complexity
3Measurement precision
If no FD basis index remapping is performed, then the processing remains straightforward, but the precision of FD basis selection deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-computing optimal FD basis index mappings for different TRP configurations and channel conditions. These pre-computed mappings are stored and referenced during actual operation, enabling precise FD basis selection without real-time computation complexity. The preliminary action captures the optimal indexing strategies in advance, improving measurement precision while avoiding complex real-time calculations
Solution Approach 2:
The patent employs parameter changes by systematically transforming FD basis indices through remapping functions that optimize the selection precision. The remapping process applies deterministic transformations to original indices, ensuring precise FD basis selection aligned with channel characteristics while maintaining manageable complexity through structured transformation rules rather than arbitrary index changes
Data Source
AI summary
A method for wireless communication at a user equipment (UE) is provided. In the method, the UE rearranges a sequence of frequency domain (FD) bases for each transmission reception point (TRP) of a plurality of TRPs based on a relative FD basis index offset of a plurality of relative FD basis index offsets and a sequence of non-zero coefficients (NZCs). Each NZC in the sequence of NZCs represents a priority of a corresponding FD basis of the sequence of FD bases. The UE further permutes the rearranged sequence of FD bases for each TRP of the plurality of TRPs based on the sequence of NZCs and a corresponding relative FD basis index offset to obtain a set of permuted FD bases, and transmits the plurality of relative FD basis index offsets for each layer of one or more layers and the set of permuted FD bases to a network entity.