Multi-Antenna Beamforming Reference Resource Association
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Solution Overview
Problem
High-frequency wireless communication systems face significant path loss and penetration loss, making it challenging to achieve efficient bandwidth utilization and deployment flexibility.
Innovation Solution
Implementing a multi-antenna communication system that uses analog/hybrid beamforming for the New Radio (NR) interface, allowing for the association of multiple reference resources with a target resource to optimize communication channel properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-frequency wireless communication (above 6 GHz) is used, then bandwidth utilization is improved, but path loss and penetration loss increase significantly
Solution Approach 1:
The patent segments the communication signal into multiple reference resources (CSI-RS resources) that can be independently associated with different target resources. This segmentation allows the system to distribute signal energy across multiple frequency resources, mitigating the impact of high path loss at any single frequency by utilizing diverse reference resources for channel estimation and beamforming operations.
Solution Approach 2:
The patent changes the parameter of reference resource association by introducing flexible QCL (Quasi-Co-Location) type indications that can associate multiple reference resources with a target resource. This allows dynamic adjustment of channel estimation parameters and beamforming configurations to optimize communication performance under high-frequency conditions, adapting to varying path loss characteristics across different reference resources.
2Power
If multiple reference resources are associated with a target resource, then beamforming gain is enhanced, but device complexity increases
Solution Approach 1:
The patent creates a universal framework where reference resources can serve multiple functions simultaneously - they can be associated with different target resources through different QCL types, enabling a single reference resource to support multiple beamforming operations and channel estimation tasks. This multi-functionality enhances beamforming gain without proportionally increasing complexity, as the same reference resources are reused across different associations.
Solution Approach 2:
The patent introduces dynamic association mechanisms where the relationship between reference resources and target resources can be flexibly configured and changed based on channel conditions. The network can dynamically indicate which reference resources are associated with which target resources through QCL type indications, allowing the system to adapt beamforming configurations in real-time to optimize gain while managing complexity through intelligent resource allocation.
Data Source
AI summary
The disclosed technology includes techniques for facilitating the operation of a multi-antenna communication system. The disclosed technology can be implemented to provide a method for wireless communications which includes receiving, by a user device, an indication about an association between multiple reference resources and a target resource at the user device. The association includes properties of a communication channel to and/or from the user device, and wherein at least one property of the communication channel is different among the multiple reference resources, and performing wireless communication using the indication.