Reference Signal Resource Configuration for Larger NR Bandwidths
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Solution Overview
Problem
The existing reference signal transmission schemes in high-frequency communication systems, particularly in new radio access technologies (NR), are inadequate due to limited bandwidth support and increased antenna configurations, leading to inefficiencies and higher costs.
Innovation Solution
A method and device for configuring reference signal resources, where a first communication node indicates or predefines the resources used by a second communication node for transmitting the reference signal, including bandwidth configurations and multi-level bandwidth structures to accommodate larger bandwidths and improve flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of antennas is increased to compensate for spatial attenuation losses in high-frequency communication, then communication reliability is improved, but device complexity and power consumption increase
Solution Approach 1:
The patent divides the beamforming process into two segments: digital beamforming for a limited number of antenna groups, and analog RF beamforming for the remaining antenna elements. This segmentation allows the system to achieve high-frequency communication reliability through multiple antennas while avoiding the prohibitive complexity and power consumption of fully digital beamforming across all antenna elements.
Solution Approach 2:
The patent applies different beamforming qualities to different parts of the antenna system. Digital beamforming with full processing capability is applied to a subset of antenna groups where precise control is most beneficial, while analog RF beamforming is applied to other antenna elements to provide additional spatial diversity and gain without the same level of processing complexity.
2Reliability
If digital beamforming is used for all antennas, then beamforming performance is improved, but power consumption and cost increase
Solution Approach 1:
The patent segments the antenna array into multiple groups, with only certain groups undergoing digital beamforming processing. This segmentation reduces the number of complex digital signal processing operations required, thereby lowering power consumption and hardware cost while maintaining beamforming performance through the combined digital and analog approaches.
Solution Approach 2:
The patent introduces analog RF beamforming as an intermediary layer between the digital baseband processing and the antenna elements. This intermediary analog processing stage provides additional beamforming capability without requiring full digital processing for all antenna elements, thus reducing power consumption and cost while maintaining performance.
3Adaptability or versatility
If existing SRS bandwidth configuration is used, then compatibility with LTE/LTE-A is maintained, but support for larger bandwidths in NR is limited
Solution Approach 1:
The patent introduces dynamic bandwidth configuration for SRS transmission, allowing the SRS bandwidth to be adjusted according to the configured bandwidth part (BWP) size. This dynamic adaptation enables the system to support larger NR bandwidths while maintaining backward compatibility with LTE/LTE-A configurations through appropriate parameter selection and configuration management.
Solution Approach 2:
The patent modifies key SRS configuration parameters including bandwidth, frequency domain position, and resource allocation to accommodate larger NR bandwidths. These parameter changes are implemented in a way that maintains compatibility with existing LTE/LTE-A systems by using standardized parameter naming and configuration structures that can accommodate both legacy and extended bandwidth requirements.
Data Source
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AI summary
Disclosed are a reference signal configuration method and device, an information transmission method and device, and an information receiving method and device. The reference signal configuration method includes: indicating, by a first communication node, via signaling a resource used by a second communication node for transmitting a reference signal; or predefining, by a first communication node and a second communication node, a resource used by the second communication node for transmitting a reference signal. Further disclosed are a storage medium and a processor.