Beam Failure Recovery Prediction Model Reduces Signaling Overhead
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Solution Overview
Problem
The existing Beam Failure Recovery (BFR) process in wireless communication systems incurs significant signaling overhead and delay due to the periodic nature of Beam Failure Detection Reference Signals (BFD RS) and New Beam Identification Reference Signals (NBI RS).
Innovation Solution
A wireless communication method that predicts the performances of N target signals and/or K target signals satisfying a preset condition using a target prediction model based on the performances of M historical signals, thereby reducing the need for dedicated reference signals and associated signaling overhead and delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If periodic BFD RS and NBI RS are used for beam failure detection and new beam identification, then measurement accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent uses existing periodic reference signals (CSI-RS and SSB) as copies of dedicated BFD RS and NBI RS to perform beam failure detection and new beam identification. Instead of configuring separate dedicated reference signals, the terminal device utilizes measurements on existing reference signals that are already being transmitted for other purposes, thereby achieving the same functional effect without additional signaling overhead.
Solution Approach 2:
The patent makes existing reference signals serve multiple functions. The CSI-RS and SSB, originally designed for channel state information acquisition and synchronization respectively, are also used for beam failure detection and new beam identification. This multi-functionality eliminates the need for dedicated BFD RS and NBI RS configurations, reducing signaling overhead while maintaining measurement accuracy.
2Reliability
If periodic BFD RS and NBI RS are used for beam failure detection and new beam identification, then measurement reliability is improved, but delay increases
Solution Approach 1:
The patent performs beam failure detection and new beam identification measurements continuously on existing periodic reference signals (CSI-RS and SSB) that are already being transmitted. By using these pre-existing signals rather than waiting for dedicated BFD RS and NBI RS configurations, the terminal device can detect beam failures and identify new beams more quickly, reducing the delay while maintaining measurement reliability through continuous monitoring.
3Measurement precision
If dedicated BFD RS and NBI RS are configured, then beam failure recovery accuracy is improved, but system complexity increases
Solution Approach 1:
The patent extracts the beam failure detection and new beam identification functions from the dedicated reference signal configuration process. Instead of adding separate BFD RS and NBI RS configurations to the system, the terminal device extracts measurement opportunities from existing reference signals (CSI-RS and SSB) that are already present in the system, thereby maintaining recovery accuracy without increasing system complexity.
Data Source
AI summary
A wireless communication method, a terminal device, and a network device are provided. The method includes: performances of M historical signals are obtained by detecting the M historical signals; and on the basis of, performances of N target signals and/or K target signals having performance meeting a preset condition in the N target signals are predicted based on the performances of the M historical signals using a target prediction model. M and N are both positive integers, and K is less than or equal to N.