Beam Recovery via Bandwidth Part Switching in 5G Terminals
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Solution Overview
Problem
In 5G radio communication systems, some bandwidth parts (BWPs) do not support beam recovery, leading to issues with beam link switching and recovery, which affects user equipment communication and user experience, especially at high frequencies where beam links are prone to failure.
Innovation Solution
A method and apparatus that determine a target BWP based on an active BWP and switch mapping relationships to perform beam recovery, allowing the processing of unsuitable stages in the beam recovery process to be implemented on a different BWP, ensuring continuous communication link establishment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If narrow beams are used to ensure sufficient signal gain and coverage, then signal gain is improved, but the beam link becomes more sensitive to movement and blocking, leading to higher failure rates
Solution Approach 1:
The patent implements dynamic beam switching and recovery mechanisms that allow the system to adapt beam directions in real-time based on channel conditions. When beam blocking is detected, the system dynamically switches to alternative beams or adjusts beam directions to maintain reliable communication while preserving signal gain.
Solution Approach 2:
The system performs preliminary beam failure prediction and preparation by monitoring channel conditions and pre-configuring alternative beam paths. This allows the system to proactively switch to backup beams before complete link failure occurs, maintaining reliability while using narrow beams for gain.
2Adaptability or versatility
If multiple bandwidth parts (BWPs) are configured for user equipment, then communication flexibility is improved, but beam recovery cannot be implemented on all BWPs, affecting beam link recovery
Solution Approach 1:
The patent extends beam recovery functionality to multiple bandwidth parts by implementing a universal beam recovery mechanism that operates across different BWP configurations. The system configures beam recovery parameters and mapping relationships that are applicable across multiple BWPs, ensuring that beam link recovery can be performed regardless of which BWP is currently active.
Solution Approach 2:
The patent introduces a beam recovery indication message as an intermediary that carries recovery information across different BWPs. This message mechanism enables coordination between multiple BWPs and facilitates beam recovery even when the current active BWP does not support direct beam recovery operations.
3Ease of operation
If beam recovery processing is performed on the current active BWP, then processing simplicity is maintained, but beam recovery cannot be completed when the current BWP is unsuitable, leading to communication interruptions
Solution Approach 1:
The patent uses a beam recovery indication message as an intermediary to coordinate beam recovery across BWPs. When the current active BWP is unsuitable for beam recovery, the system sends indication messages to trigger recovery operations on suitable BWPs, maintaining simplicity while ensuring recovery completion.
Solution Approach 2:
The patent extracts beam recovery operations from the constraint of the current active BWP by allowing recovery to be performed on different BWPs. The system separates the beam recovery function from the current BWP context, enabling recovery to proceed on alternative BWPs that are better suited for the operation.
Data Source
AI summary
Provided are a beam recovery method and apparatus, a terminal and a storage medium. The method includes: in a beam recovery process, in response to determining processing of a current stage in the beam recovery process being unsuitable to be implemented on an active bandwidth part (BWP), determining a target BWP of the current stage according to the active BWP and a switch mapping relationship determined for the current stage, switching to the target BWP to perform the processing of the current stage, and continuing to perform the beam recovery process until implementing a beam recovery.