Multi-Port SRS Cyclic Shift Grouping for Interference Control
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Solution Overview
Problem
Existing wireless communication systems face interference and inefficiencies in SRS transmissions due to the lack of flexibility in configuring cyclic shifts and comb offsets for multi-port SRS resources, leading to degraded performance and increased resource consumption.
Innovation Solution
Implementing a configuration that assigns cyclic shift parameters and comb offset parameters on a per-group-of-SRS-ports basis, allowing for flexible assignment of cyclic shifts and comb offsets across different groups of SRS ports, thereby enhancing SRS transmission quality and reducing resource consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single cyclic shift parameter is configured for all SRS ports, then device complexity is reduced, but SRS transmission performance deteriorates due to interference
Solution Approach 1:
The patent divides SRS ports into multiple groups (first group and second group), where each group can be configured with independent cyclic shift parameters. This segmentation allows different cyclic shift values to be applied to different port groups, thereby reducing interference between ports while maintaining manageable configuration complexity through structured grouping.
Solution Approach 2:
The patent applies different cyclic shift parameters to different groups of SRS ports based on their specific interference characteristics. Instead of using a uniform cyclic shift for all ports, the system configures local optimizations where each group receives appropriately tailored cyclic shift values to mitigate their specific interference patterns, improving overall transmission performance.
2Reliability
If cyclic shift parameters are configured for each SRS port individually, then SRS transmission performance is improved, but signaling overhead increases
Solution Approach 1:
The patent merges multiple SRS ports into groups, where each group shares common cyclic shift configuration parameters. This combining approach reduces the total number of independent parameters that need to be signaled and configured, thereby reducing signaling overhead while still providing sufficient flexibility to manage interference through group-level parameter differentiation.
3Object-affected harmful factors
If flexible cyclic shift configuration is implemented per SRS port group, then interference is reduced, but device complexity increases
Solution Approach 1:
The patent segments SRS ports into manageable groups with independent cyclic shift configurations, providing flexible interference mitigation at the group level without requiring full per-port configuration. This segmentation balances flexibility with complexity by creating a hierarchical structure that is more manageable than complete per-port individualization.
Data Source
AI summary
This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for a user equipment (UE) to receive a configuration for a plurality of groups of sounding reference signal (SRS) ports associated with an SRS resource, the configuration indicating one or more cyclic shift parameters for each group of SRS ports of the plurality of groups of SRS ports. The UE also can transmit one or more SRSs using at least one group of SRS ports of the plurality of groups of SRS ports based at least in part on the one or more cyclic shift parameters associated with the at least one group of SRS ports.