DMRS Signal Quality Reporting for Wireless Beam Management
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently reporting signal quality differences based on demodulation reference signals (DMRS), which affects beam management and overall communication quality.
Innovation Solution
A method and apparatus for wireless communication that involve receiving a physical downlink control channel (PDCCH) transmission including a DMRS via a control resource set (CORESET) and transmitting data indicating the signal quality difference between a first signal quality measurement associated with the DMRS and a most recent signal quality measurement associated with the CORESET.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If signal quality measurements are reported frequently using traditional reference signals, then beam management accuracy is improved, but signaling overhead and system complexity increase
Solution Approach 1:
The patent combines signal quality measurement reporting with existing uplink data transmissions by embedding measurement indicators in uplink shared channel resources. This merging approach allows signal quality information to be reported without requiring separate dedicated reporting channels, thereby reducing system complexity while maintaining measurement accuracy.
Solution Approach 2:
The patent enables uplink transmissions to serve multiple functions simultaneously: carrying both data information and signal quality measurement reports. By making the uplink channel universal for both data and measurement reporting, the system avoids the overhead of separate reporting mechanisms while ensuring accurate beam management feedback.
2Reliability
If dedicated reference signals are used for beam failure prediction, then reliability is improved, but resource consumption increases
Solution Approach 1:
The patent enables the system to use existing uplink data transmissions to carry signal quality measurement information that would traditionally require separate dedicated reference signals. The uplink channel serves itself dual purposes, eliminating the need for additional reference signal resources while maintaining reliable beam failure prediction capability.
Solution Approach 2:
By making the uplink shared channel universal for both data transmission and measurement reporting, the patent eliminates the need for separate dedicated reference signals. This multi-functional approach reduces resource consumption while preserving the reliability needed for accurate beam failure prediction.
3Reliability
If measurement reporting is performed continuously, then communication quality is improved, but signaling overhead increases
Solution Approach 1:
The patent merges measurement reporting with regular uplink data transmissions, so that measurement information is conveyed alongside data without requiring additional signaling resources. This combining approach maintains continuous communication quality monitoring while avoiding the overhead of separate reporting channels.
Solution Approach 2:
The patent enables continuous measurement reporting by utilizing ongoing uplink data transmissions as the carrier for measurement information. This approach ensures uninterrupted monitoring of communication quality without the need for separate periodic reporting mechanisms, thereby maintaining reliability while reducing overhead.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, via a control resource set (CORESET), a physical downlink control channel (PDCCH) transmission including a demodulation reference signal (DMRS). The UE may transmit data indicating a signal quality difference between a first signal quality measurement associated with the DMRS and a most recent signal quality measurement associated with the CORESET. Numerous other aspects are described.