Uplink Reference Signal Beam Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing uplink reference signals for beam refinement, particularly in scenarios where resources are limited and multiple beams need to be managed.
Innovation Solution
The proposed solution involves a method where a user equipment (UE) receives a beam management configuration from a base station indicating the resources to be used for transmitting sounding reference signals (SRS) and demodulation reference signals (DMRS) for beam refinement during an uplink beam management occasion, and then transmits these signals based on the configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple SRS resources are configured for beam refinement, then more beams can be managed, but resource consumption and system complexity increase
Solution Approach 1:
The patent combines SRS-based beam refinement and DMRS-based beam refinement into a unified beam management framework. The gNB configures the UE to perform both SRS transmissions for uplink beam refinement and DMRS transmissions for downlink beam refinement, allowing the system to manage multiple beams efficiently without requiring separate extensive resource configurations for each beam type.
Solution Approach 2:
The patent makes the beam management system universal by enabling both SRS and DMRS to serve beam refinement purposes. The gNB can flexibly select and configure either SRS resources, DMRS resources, or both depending on the specific beam management needs, making the system adaptable to various scenarios without requiring dedicated resources for each case.
2Adaptability or versatility
If extensive resource configuration is used for beam refinement, then more beams can be refined, but device complexity and configuration overhead increase
Solution Approach 1:
The patent implements dynamic beam management where the gNB can flexibly configure and adjust SRS and DMRS resources based on real-time channel conditions and beam management requirements. The configuration is not static but adapts to changing conditions, allowing efficient beam refinement without requiring extensive fixed resource allocations.
Solution Approach 2:
The patent changes the approach from using numerous SRS resources to using a combination of SRS and DMRS resources with configurable parameters. The gNB can adjust the number of SRS resources, the number of DMRS resources, their timing, and association relationships to optimize beam refinement while minimizing resource consumption and configuration complexity.
3Measurement precision
If separate resource configurations are used for SRS and DMRS, then beam refinement is more precise, but resource overhead and management complexity increase
Solution Approach 1:
The patent merges the configuration management of SRS and DMRS resources under a unified beam management framework at the gNB. While SRS and DMRS maintain their distinct functions and resource characteristics, their configuration, activation, and management are integrated, allowing the gNB to handle both resource types systematically without the overhead of completely separate management systems.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, a beam management configuration that indicates a set of resources to be used by the UE for transmitting a plurality of reference signals, including at least one sounding reference signal (SRS) and at least one demodulation reference signal (DMRS), to be used for beam refinement during an uplink beam management occasion; and transmit, to the base station, the at least one SRS and the at least one DMRS based at least in part on the beam management configuration. Numerous other aspects are provided.