UE Beam Quantity Reporting for NR Resource Configuration
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Solution Overview
Problem
In New Radio (NR) beam management, when the base station is unaware of the available receiving beams of the user equipment, it often resorts to frequent polling or configures resources based on a maximum number of beams, leading to excessive signaling and reporting overheads or wastage of radio resources.
Innovation Solution
The user equipment reports its available receiving beam quantity to the network device, allowing the network device to accurately configure beam management reference signal resources, reducing signaling and reporting overheads or saving radio resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the base station performs beam scanning in a polling manner through frequent triggering, then the available receiving beam of the user equipment can be determined, but this causes extra signaling and reporting overheads
Solution Approach 1:
The patent changes the parameter of beam scanning from frequent periodic triggering to non-periodic triggering based on actual measurement needs. The base station configures CSI-RS resources with different periodicities (first periodicity for initial beam pairing, second periodicity for subsequent measurements), and adjusts triggering behavior based on whether the UE has reported available receiving beams. This parameter change reduces unnecessary frequent triggering while maintaining measurement accuracy.
Solution Approach 2:
The patent introduces a feedback mechanism where the UE reports the quantity of available receiving beams to the base station. The base station uses this feedback information to adjust its beam scanning strategy - when the UE has available receiving beams, the base station can use non-periodic triggering with reduced overhead; when the UE lacks available receiving beams, the base station can resort to periodic polling. This feedback loop optimizes the balance between measurement accuracy and signaling overhead.
2Ease of operation
If the base station configures beam management resources based on a maximum quantity of receiving beams, then resource configuration can be simplified, but this causes waste of radio resources
Solution Approach 1:
The patent changes the configuration parameter from a fixed maximum quantity of receiving beams to a dynamic quantity based on actual UE capability. The base station configures the quantity of CSI-RS resources to match the actual number of available receiving beams reported by the UE, rather than always using the maximum possible quantity. This parameter adaptation eliminates resource wastage while maintaining configuration simplicity through automated matching.
Solution Approach 2:
The patent makes the beam management resource configuration dynamic rather than static. The quantity of CSI-RS resources configured by the base station changes according to the UE's reported available receiving beams. This dynamic configuration allows the system to adapt to different UE capabilities and scenarios, optimizing radio resource usage without sacrificing configuration ease, as the base station automatically adjusts based on UE feedback.
3Ease of operation
If the base station performs periodic beam scanning regardless of user equipment receiving beam quantity, then resource configuration can be simplified, but this increases signaling and reporting overheads
Solution Approach 1:
The patent makes the beam scanning triggering dynamic based on UE capability information. When the UE reports having available receiving beams, the base station switches to non-periodic triggering for CSI-RS resources, reducing signaling overhead. When the UE lacks available receiving beams, the base station uses periodic triggering to ensure proper beam pairing. This dynamic triggering strategy maintains configuration simplicity while adapting signaling overhead to actual needs.
Solution Approach 2:
The patent changes the triggering parameter of CSI-RS resources from always periodic to conditionally periodic or non-periodic. The base station configures different periodicities (first periodicity for initial pairing, second periodicity for subsequent measurements) and selects the appropriate triggering mode based on UE feedback about available receiving beams. This parameter change reduces signaling overhead by eliminating unnecessary periodic triggers when the UE has capability information.
Data Source
AI summary
The present disclosure relates to resource configuration methods and apparatus. A user equipment (UE) generates receiving beam quantity indication information indicating a maximum quantity of receiving beams that is supported by the UE, and sends the receiving beam quantity indication information to a network device. The maximum quantity of receiving beams is used for a configuration of a beam management reference signal resource for the UE. The UE receives the configuration of a beam management reference signal resource for the UE from the network device.