Dynamic CSI-RS Resource Blanking for Wireless Efficiency
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Solution Overview
Problem
Current beam management procedures in wireless communication systems, particularly at higher frequencies, face inefficiencies due to the need for extensive resource allocation for CSI-RS, which can lead to sub-optimal resource utilization and increased latency, especially when multiple UEs require different beam configurations.
Innovation Solution
The base station identifies resources allocated for beam management and, upon determining a need for more urgent data transmission, 'blanks' these resources to transmit data to other UEs, allowing for flexible allocation of CSI-RS resources and reducing the number of configured CSI-RS resource sets to improve resource efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station transmits CSI-RS reference signals using dedicated resources for beam management procedures, then beam management accuracy and reliability are improved, but resource utilization efficiency deteriorates and system productivity decreases
Solution Approach 1:
The patent applies multi-functionality by enabling CSI-RS resources to serve dual purposes: they function as reference signals for beam management procedures (P1, P2, P3) and simultaneously as data transmission resources. The base station configures CSI-RS resource sets that can be dynamically used for either beam sweeping operations or data transmission to different UEs, eliminating the need for dedicated exclusive resources for beam management and thereby improving overall resource utilization efficiency while maintaining beam management reliability
Solution Approach 2:
The patent implements dynamic resource allocation where the base station can flexibly switch the usage of CSI-RS resources between beam management and data transmission based on real-time system conditions. The network configures multiple CSI-RS resource sets and dynamically selects which resources to use for beam sweeping versus data transmission, allowing the system to adapt resource usage to current traffic load and beam management requirements, thus resolving the contradiction between reliability and productivity
2Adaptability or versatility
If the base station configures multiple CSI-RS resource sets for different UEs to perform beam management procedures, then beam management adaptability is improved, but device complexity and resource overhead increase
Solution Approach 1:
The patent reduces complexity by making CSI-RS resource sets universal and shareable across multiple UEs. Instead of configuring separate dedicated CSI-RS resource sets for each UE, the base station configures a pool of CSI-RS resource sets that can be shared and reused by multiple UEs for their respective beam management procedures. This universal approach maintains adaptability while significantly reducing the total number of configured resources and simplifying network configuration complexity
Solution Approach 2:
The patent combines beam management resources from multiple UEs into shared CSI-RS resource sets. Multiple UEs can participate in beam management procedures using the same configured CSI-RS resources, merging what would otherwise be separate resource allocations. This consolidation reduces the overall resource configuration complexity and overhead while maintaining the ability to adapt to different UE requirements through dynamic resource assignment
Data Source
AI summary
A base station transmits to a first UE beam management configuration information that identifies (directly or indirectly) a resource and indicates to the UE that the identified resource will be used by the base station to transmit a reference signal for use by the first UE in performing a beam management procedure, and then the base station refrains from using the identified resource to transmit the reference signal, and, instead, uses the identified resource to transmit data (e.g., user data or other information) to a second UE.