DCI Triggered SRS on Non-Contiguous Resource Blocks
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in efficiently transmitting and receiving data over non-contiguous resource blocks, which can lead to inaccurate signaling and reduced performance due to the complexity of resource allocation and channel conditions.
Innovation Solution
The implementation of signaling enhancements triggered by downlink control information (DCI) that allow user equipment (UE) to transmit sounding reference signals (SRS) on non-contiguous resource blocks, with specific configurations for integer number alignment and hopping patterns, enabling efficient data transmission and reception across separated resource blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data is allocated over non-contiguous resource blocks, then resource utilization efficiency is improved, but signaling accuracy deteriorates
Solution Approach 1:
The patent segments the SRS transmission into multiple parts corresponding to different resource block groups. Each SRS is transmitted on specific RBGs that align with the non-contiguous data allocation, allowing accurate channel sounding for each segment while maintaining overall resource utilization efficiency.
Solution Approach 2:
The patent applies different SRS transmission configurations to different resource block groups based on their specific characteristics. Each RBG can have tailored SRS parameters (frequency position, time position, cyclic shift) that match the local channel conditions and data allocation requirements, ensuring both efficiency and accuracy.
2Measurement precision
If SRS is transmitted on non-contiguous resource blocks, then channel sounding accuracy is improved, but device complexity increases
Solution Approach 1:
The patent enables dynamic configuration of SRS transmission parameters through DCI signaling. The network can adaptively adjust which RBGs require SRS transmission based on current channel conditions and data allocation patterns, allowing the system to maintain high sounding accuracy while reducing complexity when non-contiguous transmission is not needed.
Solution Approach 2:
The patent designs the SRS transmission mechanism to handle both contiguous and non-contiguous resource allocations using the same fundamental procedure. The system universally applies RBG-based SRS transmission with configurable parameters, eliminating the need for separate complex mechanisms for different allocation types.
3Measurement precision
If multiple SRS are transmitted on separated resource blocks, then channel state information accuracy is improved, but transmission overhead increases
Solution Approach 1:
The patent ensures continuous and comprehensive channel sounding by transmitting SRS on all relevant RBGs where data is allocated. This continuous coverage across non-contiguous resources provides complete channel state information without gaps, maintaining accuracy while optimizing the number of SRS transmissions to match exactly the data allocation pattern.
Data Source
AI summary
The present disclosure relates to methods and devices for signaling enhancements. In one aspect, a User Equipment (UE) can receive a configuration to transmit one or more sounding reference signals (SRSs) based on a downlink control information (DCI). The UE can also receive an indication of a plurality of non-contiguous resource blocks (RBs) based on the DCI. The UE can transmit a first SRS on a first set of one or more RBs of the plurality of non-contiguous RBs. Additionally, the UE can transmit a second SRS on a second set of one or more RBs of the plurality of non-contiguous RBs. The first set of one or more RBs and the second set of one or more RBs may be separated by a distance of at least one RB.