Beam Recovery Grouping for Wireless Communication
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Solution Overview
Problem
In wireless communication systems, especially in high-frequency bands like mmWave, beam failures due to UE movement and channel condition changes pose challenges, leading to disruptions in communication, and existing solutions lack efficient methods for differentiated beam recovery strategies.
Innovation Solution
The implementation of beam recovery groups based on beam characteristics, where narrow beams are grouped for partial recovery and wide beams for full recovery, allowing for quicker recovery in case of narrow beam failures and minimizing resource-intensive PRACH use for wide beam failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beamforming is used to overcome high path-loss in mmWave bands, then data throughput is improved, but beam failures occur more frequently due to UE movement and channel condition changes
Solution Approach 1:
The patent segments beams into different recovery groups based on their characteristics (narrow beams vs. wide beams). This segmentation allows differentiated recovery strategies: narrow beams trigger partial recovery within their group while wide beams trigger full recovery. The segmentation resolves the contradiction by enabling faster, more targeted recovery for narrow beams that cause frequent failures, while maintaining broader coverage for wide beams.
Solution Approach 2:
The patent applies local quality by treating different beam types differently based on their specific characteristics. Narrow beams receive partial recovery treatment (faster recovery, less resource intensive) while wide beams receive full recovery treatment. This localized differentiation optimizes the balance between throughput maintenance and failure recovery for each beam type.
2Reliability
If traditional beam recovery methods are used, then communication reliability is maintained, but recovery time increases and resources are wasted
Solution Approach 1:
By segmenting beams into recovery groups, the system can apply appropriate recovery timing and resources to each group. Narrow beams form partial recovery groups that trigger faster recovery mechanisms, reducing recovery time for the most critical failures, while wide beams follow a different recovery timeline, optimizing overall system response time.
Solution Approach 2:
The patent implements partial recovery for narrow beams instead of full recovery, applying only the necessary recovery actions for this beam type. This partial action reduces recovery time and resource consumption for narrow beam failures while maintaining sufficient reliability, avoiding the excessive action of full recovery for all beam types.
3Reliability
If PRACH is used for beam recovery, then beam failure recovery is achieved, but resource consumption increases
Solution Approach 1:
The patent segments beam recovery into two paths: partial recovery for narrow beams and full recovery for wide beams. This segmentation reduces resource consumption by avoiding full PRACH-based recovery for all beams, instead using more efficient partial recovery mechanisms for narrow beams that are more prone to failure.
Solution Approach 2:
The patent changes the recovery parameters based on beam characteristics - using different recovery mechanisms and resource allocation for narrow versus wide beams. This parameter differentiation optimizes resource consumption by applying the least resource-intensive recovery method appropriate for each beam type.
Data Source
AI summary
A method of wireless communication, the method including: communicating, by a first wireless communication device with a second wireless communication device, communication signals using a first beam; detecting a failure of the first beam; in response to the failure of the first beam, determining that the first beam is associated with a first beam recovery group of a plurality of beam recovery groups; transmitting a beam failure recovery signal to the second wireless communication device based on determining that the first beam is associated with the first beam recovery group; and communicating, by the first wireless communication device with the second wireless communication device, the communication signals at least in part using a second beam.